CN113167490B - Heat exchange type ventilator with dehumidification function - Google Patents

Abstract

The heat exchange type ventilator (50) with dehumidification function has: the heat exchange type ventilator (10), which circulates in the exhaust air flow (2) in the exhaust air passage (4) and circulates in the air supply air passage (5) for heat exchange between the supply airflow (3); and a dehumidification device (30), which dehumidifies the supply airflow. The dehumidification device comprises: a refrigeration cycle, which includes a compressor (31), a radiator (32), an expander (33) and a heat absorber (34); and a heat exchanger (35), which flows in the first flow path ( Heat exchange is performed between the air in 36) and the air flowing in the second flow path (37). The first air supply air (3a) introduced into the dehumidification device flows through the heat absorber, the first flow path, and the radiator in sequence, and then is led out to the air supply air path. The second air supply air (3b) introduced into the dehumidifier passes through the second flow path and the radiator in sequence, and then is led out to the air supply air path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

Description

Heat exchange type ventilator with dehumidification function

technical field

The present invention relates to a heat exchange type ventilator with a dehumidification function used in living spaces and the like.

Background technique

Conventionally, a heat exchange type ventilator that performs heat exchange between a supply airflow and an exhaust airflow during ventilation is known as an apparatus that can ventilate without impairing the effect of cooling or heating.

In recent years, due to the influence of global warming and the improvement of the airtightness of houses, especially in summer, the indoor heat and humidity are not exhausted, and the indoor becomes hot and humid, so there is a possibility that the indoor comfort of the occupants is impaired. concerns. In order to improve indoor comfort in summer, it is particularly important to reduce indoor humidity, so heat exchange ventilation devices with a dehumidification function that perform heat exchange and ventilation while adjusting indoor humidity have been sought. Therefore, as a heat-exchange-type ventilator with a dehumidification function, we have developed a heat-exchange-type ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a dehumidifier combining a refrigeration cycle and a heat exchanger, for example, a dehumidifier described in Patent Document 1 is known.

A conventional dehumidifier will be described with reference to FIG. 9 .

As shown in FIG. 9 , a conventional dehumidifier 1100 is configured such that after air (air X, air Y) sucked into a main body casing 1102 from an air inlet 1101 passes through a dehumidifier 1103, the air is blown out from an air outlet 1104. Blow out to the outside of the main body casing 1102 . The dehumidifier 1103 includes a refrigeration cycle and a heat exchanger 1111 . In the refrigeration cycle, a compressor 1105, a radiator 1106, an expander 1107, and a heat absorber 1108 are sequentially connected. The heat exchanger 1111 is disposed between the heat absorber 1108 and the radiator 1106 , and performs heat exchange between the air X flowing in the first flow path 1109 and the air Y flowing in the second flow path 1110 .

Then, the air X flowing through the first flow path 1109 is cooled by the heat absorber 1108 to generate dew condensation. The condensation water generated by the cooled air X is recovered. On the other hand, the air Y flowing through the second flow path 1110 exchanges heat with the air X cooled by the heat absorber 1108 to be cooled, and dew condensation occurs. Dew condensation water generated from the cooled air Y is also recovered. In this way, dehumidification of air is performed by the dehumidifier 1100 .

prior art literature

patent documents

Patent Document 1: International Publication No. 2016/031139

Patent Document 2: Japanese Patent Laid-Open No. 2009-279514

Contents of the invention

However, the conventional dehumidifier 1100 is configured to pass dehumidified air through the radiator 1106 in order to cool the radiator 1106 of the refrigeration cycle. In the radiator 1106, in addition to the energy absorbed by the heat absorber 1108, the energy for circulating the refrigerant in the refrigeration cycle by the compressor 1105 is also discharged. Therefore, the temperature of the dehumidified air that has passed through the radiator 1106 rises to be equal to or higher than the temperature of the air before dehumidification. As a result, when the dehumidification mechanism of the conventional dehumidification device 1100 is arranged in the air supply air path of the heat exchange type ventilator to perform dehumidification, the dehumidified air (air whose temperature has been raised) is generated as it is. The problem that the supply air is blown into the room and impairs the comfort of the room.

The present invention was made in order to solve the above-mentioned problems, and provides a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

In order to achieve this object, the heat exchange type ventilator with dehumidification function of the present invention is characterized in that the heat exchange type ventilator with dehumidification function includes: heat exchange between them, the exhaust flow flows through the exhaust air passage for exhausting indoor air to the outside, and the supply air flow circulates through the air supply air passage for supplying outdoor air to the indoor; and the dehumidification device , which dehumidifies the supply air stream. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the air supply air introduced into the dehumidifier passes through the heat absorber, the first flow path, and the radiator in this order, and then is led out to the air supply air path. The other part of the supply air flow introduced into the dehumidification device flows through the second flow path and the radiator in sequence, and then is led out to the supply air flow path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to the present invention, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

Description of drawings

FIG. 1 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house.

Fig. 2 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

Fig. 3 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-1 of the present invention.

Fig. 4 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-2 of the present invention.

Fig. 5 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-3 of the present invention.

Fig. 6 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-4 of the present invention.

Fig. 7 is a Mollier diagram during a dehumidification operation of the heat exchange type ventilator with a dehumidification function according to Embodiment 1-4 of the present invention.

Fig. 8 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-5 of the present invention.

Fig. 9 is a schematic cross-sectional view showing the structure of a conventional dehumidifier.

Fig. 10 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house.

Fig. 11 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

Fig. 12 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-1 of the present invention.

Fig. 13 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-2 of the present invention.

Fig. 14 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-3 of the present invention.

Fig. 15 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-4 of the present invention.

Fig. 16 is a Mollier diagram during a dehumidification operation of the heat exchange type ventilator with a dehumidification function according to Embodiment 2-4 of the present invention.

Fig. 17 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-5 of the present invention.

Fig. 18 is a schematic diagram showing an installation state of a heat exchange type ventilator in a house according to a precondition example of the present invention.

Fig. 19 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

Fig. 20 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-1 of the present invention.

Fig. 21 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-2 of the present invention.

Fig. 22 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-3 of the present invention.

23 is a schematic diagram showing the configuration of a liquid miniaturization device in the heat exchange type ventilator with dehumidification function according to Embodiment 3-3 of the present invention.

Fig. 24 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-4 of the present invention.

Fig. 25 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-5 of the present invention.

Fig. 26 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house.

Fig. 27 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

Fig. 28 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 4-1 of the present invention.

Fig. 29 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 4-2 of the present invention.

Fig. 30 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house.

Fig. 31 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

Fig. 32 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-1 of the present invention.

Fig. 33 is a schematic diagram showing the structure of a dehumidifier in a dehumidification mode in a heat exchange type ventilator with a humidity control function.

Fig. 34 is a schematic diagram showing the structure of a dehumidifier in a heating mode in a heat exchange type ventilator with a humidity control function.

Fig. 35 is a schematic diagram showing the structure of a liquid miniaturization device in a heat exchange type ventilator with a humidity control function.

Fig. 36 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-2 of the present invention.

Fig. 37 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-3 of the present invention.

Fig. 38 is a schematic diagram showing the structure of a conventional liquid miniaturization device.

Detailed ways

The heat exchange type ventilator with dehumidification function of the present invention is characterized in that the heat exchange type ventilator with dehumidification function includes: a heat exchange type ventilator that performs heat exchange between the exhaust air flow and the supply air flow , the exhaust flow circulates in the exhaust air passage for exhausting indoor air to the outside, the supply air flow circulates in the supply air passage for supplying outdoor air to the indoor; Dehumidify. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the air supply air introduced into the dehumidifier passes through the heat absorber, the first flow path, and the radiator in this order, and then is led out to the air supply air path. The other part of the supply air flow introduced into the dehumidification device flows through the second flow path and the radiator in sequence, and then is led out to the supply air flow path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to such a structure, the cooling (exhaust heat) of the radiator in the dehumidification device can be obtained by the exhaust flow from the heat exchange type ventilator (in summer when dehumidification is required, the exhaust flow is lower in temperature than the supply air flow). energy needed. Therefore, the temperature rise of the dehumidified air (supply air flow) can be suppressed. As a result, even when a dehumidifier combining a refrigeration cycle and a heat exchanger is applied, it is possible to send a supply air flow in which a temperature rise caused by dehumidification is suppressed. That is, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

Alternatively, the exhaust flow introduced into the dehumidifier may be an exhaust flow before heat exchange.

According to such a configuration, since the exhaust flow before heat exchange whose temperature is lower than the exhaust flow after heat exchange is used, the radiator can be cooled more effectively. Therefore, the temperature rise of the dehumidified air (supply air flow) can be further suppressed.

Alternatively, the exhaust flow introduced into the dehumidifier may be an exhaust flow obtained by merging the exhaust flow before heat exchange and the exhaust flow after heat exchange.

According to such a configuration, since the exhaust flow before heat exchange and the exhaust flow after heat exchange are merged, it is possible to increase the exhaust flow introduced into the dehumidifier while keeping the temperature lower than that of the exhaust flow after heat exchange. air volume. Therefore, the radiator can be effectively cooled, and the temperature rise of the dehumidified air (supply air flow) can be suppressed.

In addition, in the heat exchange type ventilator with a dehumidification function according to the present invention, the radiator may have a first radiator and a second radiator different from the first radiator, and the expander may have a first expander. and a second expander different from the first expander. The refrigeration cycle is configured by sequentially connecting a compressor, a first radiator, a first expander, a second radiator, a second expander, and a heat absorber. The heat exchanger is arranged between the heat absorber and the second radiator. A part of the air supply air introduced into the dehumidifier passes through the heat absorber, the first flow path, and the second radiator in sequence, and then is led out to the air supply air path. The other part of the supply air flow introduced into the dehumidification device flows through the second flow path and the second radiator in sequence, and then is led out to the supply air flow path. The exhaust flow introduced into the dehumidifier passes through the first radiator, and then is led out to the exhaust air passage.

According to such a configuration, the refrigerant in the refrigeration cycle (refrigerant introduced from the first radiator cooled by the exhaust flow) is decompressed by the first expander, so that the refrigerant introduced to the second radiator can be decompressed. The temperature of the refrigerant is lower than the temperature of the refrigerant introduced into the first radiator. Therefore, it is possible to suppress an increase in the temperature of the supply airflow when heat exchange is performed between the supply airflow and the second radiator. In other words, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

In addition, an air flow adjustment unit for increasing or decreasing the air flowing in the second flow path may be provided between the second flow path and the second radiator.

According to such a configuration, the ratio of the air volume of the airflow flowing through the first flow path to the air volume of the air flow flowing through the second flow path can be varied. Therefore, by making the volume of the airflow flowing through the first flow path larger than that of the airflow flowing through the second flow path, the temperature of the air flowing to the second radiator can be effectively lowered, thereby improving the dehumidification effect.

Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and does not limit the technical scope of this invention. In addition, in all drawings, the same code|symbol is attached|subjected to the same part, and description is abbreviate|omitted. In addition, the description of each drawing will be omitted in order to avoid repetition of the details of each part that is not directly related to the present invention.

(Embodiment 1)

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(premise example)

First, a heat exchange type ventilator serving as a premise example of an embodiment of the present invention will be described with reference to FIGS. 1 and 2 . FIG. 1 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house. Fig. 2 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

In FIG. 1 , a heat exchange type ventilator 10 is installed in a room of a home 1 . The heat exchange type ventilator 10 is a device that ventilates while exchanging heat between indoor air and outdoor air.

As shown in FIG. 1 , the exhaust gas flow 2 is discharged to the outside through the heat exchange type ventilator 10 as indicated by a black arrow. The exhaust flow 2 is an air flow discharged from the room to the outside. In addition, the supply air flow 3 is taken into the room via the heat exchange type ventilator 10 as indicated by a white arrow. The supply air flow 3 is an air flow taken into the room from the outside. For example, taking winter in Japan as an example, the temperature of the exhaust air flow 2 is 20° C. to 25° C., whereas the supply air flow 3 may be below the freezing point. The heat exchange type ventilator 10 performs ventilation, and during the ventilation, transfers the heat of the exhaust flow 2 to the supply flow 3 , thereby suppressing unnecessary heat emission.

As shown in Figure 2, the heat exchange type ventilator 10 has a main body shell 11, a heat exchange element 12, an exhaust fan 13, an inner air port 14, an exhaust port 15, an air supply fan 16, an outer air port 17, and an air supply port 18. , Exhaust air path 4, air supply air path 5. The main body case 11 is the outer frame of the heat exchange type ventilator 10 . An inner air port 14 , an exhaust port 15 , an outer air port 17 , and an air supply port 18 are formed on the outer periphery of the main body casing 11 . The inner air port 14 is a suction port for sucking the exhaust flow 2 into the heat exchange type ventilator 10 . The exhaust port 15 is a discharge port for discharging the exhaust flow 2 from the heat exchange type ventilator 10 to the outside. The external air port 17 is a suction port for sucking the supply air flow 3 into the heat exchange type ventilator 10 . The air supply port 18 is a discharge port for discharging the supply air flow 3 from the heat exchange type ventilator 10 into the room.

A heat exchange element 12 , an exhaust fan 13 , and an air supply fan 16 are installed inside the main body casing 11 . In addition, an exhaust air passage 4 and an air supply air passage 5 are formed inside the main body casing 11 . The heat exchange element 12 is a member for exchanging heat (sensible heat and latent heat) between the exhaust air flow 2 flowing through the exhaust air passage 4 and the supply air flow 3 flowing through the supply air passage 5 . The exhaust fan 13 is a blower for sucking the exhaust flow 2 from the inner air port 14 and discharging it from the exhaust port 15 . The air supply fan 16 is a blower for sucking the air supply air 3 from the external air port 17 and discharging it from the air supply port 18 . The exhaust air passage 4 is an air passage connecting the inner air port 14 and the exhaust port 15 . The air supply air passage 5 is an air passage connecting the external air port 17 and the air supply port 18 . The exhaust flow 2 drawn in by the exhaust fan 13 is discharged to the outside through the exhaust port 15 via the heat exchange element 12 in the exhaust air passage 4 and the exhaust fan 13 . In addition, the air supply airflow 3 sucked by the air supply fan 16 is supplied into the room from the air supply port 18 via the heat exchange element 12 in the air supply air passage 5 and the air supply fan 16 .

When the heat exchange type ventilator 10 performs heat exchange and ventilation, the exhaust fan 13 and the air supply fan 16 of the heat exchange element 12 are operated, so that in the heat exchange element 12, the Heat exchange is performed between the exhaust air flow 2 of 4 and the air supply air flow 3 circulating in the air supply air path 5 . Thus, when the heat exchange type ventilator 10 performs ventilation, the heat of the exhaust air flow 2 discharged to the outdoors is transferred to the air supply air flow 3 taken into the room, thereby suppressing unnecessary heat discharge and releasing heat to the indoor air. heat recovery. As a result, during ventilation in winter, it is possible to suppress a decrease in the temperature of the indoor air due to the low-temperature outdoor air. On the other hand, in summer, when ventilation is performed, it is possible to suppress the temperature of the indoor air from rising due to the outdoor air having a high temperature.

Embodiment 1 includes at least the following Embodiments 1-1, 1-2, 1-3, 1-4, and 1-5.

(Embodiment 1-1)

Next, a heat exchange type ventilator with a dehumidification function according to Embodiment 1-1 will be described with reference to FIG. 3 . Fig. 3 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-1 of the present invention. It should be noted that, in each schematic diagram after FIG. 3 , the exhaust air passage 4 and the air supply air passage 5 are also used as the flow of the exhaust air flow 2 and the air supply air flow 3 in the heat exchange type ventilator 10 (black arrows). ) to mark.

As shown in FIG. 3 , the heat-exchange-type ventilator 50 with a dehumidification function according to Embodiment 1-1 has a dehumidifier 30 as a mechanism for imparting a dehumidification function to the heat-exchange-type ventilator 10 of the preceding example. structure.

The dehumidifier 30 is means for dehumidifying the heat-exchanged supply airflow 3 in the heat exchange type ventilator 10 . The dehumidifier 30 includes: a refrigeration cycle including a compressor 31 , a radiator 32 , an expander 33 , and a heat absorber 34 ; and a heat exchanger 35 . Moreover, the refrigeration cycle of this embodiment is comprised so that the compressor 31, the radiator 32, the expander 33, and the heat absorber 34 are sequentially connected in ring shape. In the refrigeration cycle, for example, alternative Freon (HFC134a) is used as a refrigerant. In addition, copper pipes are often used for connecting the various devices that constitute the refrigeration cycle, and they are connected by welding.

The compressor 31 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigeration cycle to increase the pressure and increase the temperature. In the present embodiment, the compressor 31 raises the temperature of the refrigerant gas to about 45°C.

The radiator 32 is a device for exchanging heat between the high-temperature, high-pressure refrigerant gas and air (exhaust flow 2, supply flow 3) by the compressor 31 to discharge heat to the outside (outside the refrigeration cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 32 , since the temperature (about 45° C.) of the introduced refrigerant gas is higher than the temperature of the air, when heat exchange is performed, the temperature of the air rises and the refrigerant gas is cooled. It should be noted that the radiator 32 is also called a condenser.

The expander 33 is a device that depressurizes the high-pressure refrigerant liquefied by the radiator 32 into an original low-temperature and low-pressure liquid. It should be noted that the expander 33 is also called an expansion valve.

The heat absorber 34 is a device that absorbs heat from the air to evaporate the refrigerant that has passed through the expander 33 , and turns the liquid refrigerant into a low-temperature and low-pressure refrigerant gas. In the heat absorber 34 , since the temperature of the introduced refrigerant is lower than the temperature of the air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises. It should be noted that the heat absorber 34 is also called an evaporator.

The heat exchanger 35 is a heat exchanger including sensible heat type heat exchange elements. Heat exchanger 35 is arranged in the space between heat absorber 34 and radiator 32 similarly to heat exchanger 1111 (see FIG. 9 ) in conventional dehumidifier 1100 . Inside the heat exchanger 35 are provided a first flow path 36 through which air flows in a predetermined direction, and a second flow path 37 through which air flows in a direction substantially perpendicular to the first flow path 36 . The first flow path 36 is a flow path that leads the air introduced from the heat absorber 34 to the radiator 32 . The second flow path 37 is a flow path that leads the air introduced from the heat exchange type ventilator 10 to the radiator 32 . Furthermore, the heat exchanger 35 exchanges only sensible heat between the air flowing through the first flow path 36 and the air flowing through the second flow path 37 .

Next, the flow of the airflow (exhaust airflow 2, supply airflow 3) between the heat exchange type ventilator 10 and the dehumidifier 30 will be described with reference to FIG. 3 . It should be noted that, in the following description, the airflow after heat exchange (exhaust airflow 2, supply airflow 3) or the air path (exhaust air path 4, air supply air path 5) means that the airflow through the heat exchange type ventilator The air flow or air path behind the heat exchange element 12 in 10 , and the air flow or air path before heat exchange represent the air flow or air path before passing through the heat exchange element 12 .

As shown in FIG. 3 , in the heat exchange type ventilator 10 , a switching damper 40 is provided in the exhaust air passage 4 after heat exchange, and a switching damper 41 is provided in the air supply air passage 5 after heat exchange. The switching damper 40 is used to switch between the state where the exhaust air flow 2 flowing through the exhaust air passage 4 flows to the outside and the state where the exhaust air flow 2 flowing through the exhaust air passage 4 flows to the dehumidifier 30 . throttle. In addition, the switching damper 41 is for switching between the state where the air supply air 3 flowing through the air supply air passage 5 flows into the room, and the state in which the air supply air 3 flowing through the air supply air passage 5 flows toward the dehumidifier 30 . throttle.

In the heat exchange type ventilator 50 with a dehumidification function, each switching damper is used to make the airflow flow to the dehumidifier 30, and dehumidification is performed on the supply airflow 3 after heat exchange. Details about dehumidification will be described later. In addition, in winter when dehumidification is not required, the airflow does not flow to the dehumidifier 30 by each switching damper, and the pressure loss increase by the dehumidifier 30 is suppressed. Accordingly, as the heat exchange type ventilator 50 with a dehumidification function, it is possible to realize energy-saving operation throughout the year.

In addition, as shown in FIG. 3 , a branch damper 42 is provided on the dehumidifier 30, and the branch damper 42 divides the heat-exchanged supply airflow 3 introduced into the inside into two airflows (the first supply airflow 3a, the second supply airflow 3a, and the second supply airflow 3a). 3b). The first supply air flow 3 a is an air flow introduced to the heat absorber 34 , and the second supply air flow 3 b is an air flow introduced to the heat exchanger 35 . The branch damper 42 divides the supply air flow 3 such that the air volume of the second supply air flow 3b is smaller than the air volume of the first supply air flow 3a. Here, the first supply airflow 3a corresponds to "a part of the supply airflow introduced into the dehumidifier" in the claim, and the second supply airflow 3b corresponds to "the other part of the supply airflow introduced into the dehumidifier" in the claim.

In the dehumidification device 30, the first supply airflow 3a in the divided supply airflow 3 flows through the heat absorber 34, the first flow path 36 of the heat exchanger 35, and the radiator 32 in sequence, and then flows to the heat exchange type ventilation device. The air supply air passage 5 after the heat exchange in 10 is led out. On the other hand, the second supply air flow 3b flows through the second flow channel 37 of the heat exchanger 35 and the radiator 32 in order, and then is led out to the supply air channel 5 after heat exchange. In this embodiment, the dehumidifier 30 is configured such that the first air supply air flow 3a after flowing through the radiator 32 and the second air supply air flow 3b after flowing through the radiator 32 merge, and then flow to the air supply air path after heat exchange. 5 export.

On the other hand, the exhaust flow 2 introduced into the dehumidifier 30 passes through the radiator 32 and then is led out to the exhaust air passage 4 after heat exchange in the heat exchange type ventilator 10 . That is, in the present embodiment, the dehumidifier 30 is configured to cool the radiator 32 by the exhaust flow 2 introduced from the heat exchange type ventilator 10 .

Next, the dehumidification operation of the heat exchange type ventilator 50 with a dehumidification function according to Embodiment 1-1 will be described.

First, by operating the heat exchange type ventilator 50 with a dehumidification function, the exhaust fan 13 and the air supply fan 16 are driven, and the exhaust air flowing through the exhaust air passage 4 is generated inside the heat exchange type ventilator 10 . flow 2 and the supply air flow 3 circulating in the supply air path 5 .

For example, in summer, the exhaust air flow 2 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 3 is outdoor air with high temperature and humidity.

The exhaust flow 2 and the supply flow 3 exchange sensible heat and latent heat in the heat exchange type ventilator 10 . At this time, moisture moves from the high-temperature and high-humidity supply airflow 3 to the exhaust airflow 2, so the moisture in the supply airflow 3 is removed. That is, dehumidification (first dehumidification) for the supply airflow 3 is performed by total heat exchange inside the heat exchange type ventilator 10 .

Next, the heat-exchanged supply airflow 3 is introduced into the dehumidifier 30 and dehumidified. Specifically, the first supply air flow 3 a of the supply air flow 3 introduced into the dehumidification device 30 is cooled by the heat absorber 34 . Thereby, the temperature of the 1st supply airflow 3a becomes below dew point temperature, and since the 1st supply airflow 3a condenses, the moisture of the 1st supply airflow 3a is removed. That is, dehumidification (second dehumidification) with respect to the 1st supply airflow 3a is performed by passing through the heat absorber 34.

In addition, the remaining second supply airflow 3 b of the supply airflow 3 introduced into the dehumidification device 30 flows into the second flow path 37 of the heat exchanger 35 , and is mixed with the first air flow cooled by the heat absorber 34 in the first flow path 36 . Air flow 3a is supplied for heat exchange. As a result, the second supply airflow 3b in the second flow path 37 is cooled to condense dew, and thus the moisture content of the second supply airflow 3b is removed. That is, by exchanging sensible heat in the heat exchanger 35, dehumidification (third dehumidification) with respect to the 2nd supply airflow 3b is performed.

That is, the heat exchange type ventilator 50 with a dehumidification function performs dehumidification (the first dehumidification to the third dehumidification) by the heat exchange type ventilator 10, the heat absorber 34, and the heat exchanger 35. Moisture is removed from the outdoor high-temperature and humid supply airflow 3, and at this time, the required dehumidification capacity is ensured.

And, the dehumidifier 30 in the heat exchange type ventilator 50 with dehumidification function is configured to introduce the exhaust flow 2 from the exhaust air passage 4 of the heat exchange type ventilator 10, and make the introduced exhaust flow 2 dissipate heat. device 32 flow. In the radiator 32 , heat equivalent to the energy absorbed in the heat absorber 34 and the energy for circulating the refrigerant in the refrigeration cycle in the compressor 31 is discharged by the introduced exhaust flow 2 . The exhaust flow 2 that has absorbed heat from the radiator 32 is led out to the exhaust air passage 4 and directly discharged outdoors. That is to say, the radiator 32 is cooled by the introduced exhaust gas flow 2 . And, as a result, the temperature rise of the supply air flow 3 (the first supply air flow 3 a and the second supply air flow 3 b ) accompanying the flow through the radiator 32 is suppressed.

According to the heat exchange type ventilator 50 with dehumidification function according to the embodiment 1-1, the exhaust gas flow 2 from the heat exchange type ventilator 10 (in the summer when dehumidification is required, the exhaust gas flow 2 whose temperature is lower than that of the supply gas flow 3 ) can be passed. The airflow 2) obtains the energy required for cooling (heat removal) of the radiator 32 in the dehumidifier 30, so that the temperature rise of the dehumidified air (supply airflow 3) can be suppressed. Even when the dehumidification device 30 combining the refrigeration cycle and the heat exchanger 35 is applied, it is possible to send the supply air flow in which the temperature rise caused by dehumidification is suppressed. That is, it is possible to provide a heat exchange type ventilator 50 with a dehumidification function capable of sending a supply air flow in which a temperature increase accompanying dehumidification is suppressed.

(Embodiment 1-2)

The heat exchange type ventilator 50 a with a dehumidification function according to Embodiment 1-2 of the present invention is configured to introduce a part of the exhaust gas stream 2 before heat exchange in the heat exchange type ventilator 10 a to the dehumidifier 30 . It is different from Embodiment 1-1 above. The structure of the heat exchange type ventilator 50a with a dehumidification function other than this is the same as that of the heat exchange type ventilator 50 with a dehumidification function in Embodiment 1-1. Hereinafter, re-description of the content described in Embodiment 1-1 will be appropriately omitted, and points different from Embodiment 1-1 will be mainly described.

A heat exchange type ventilator 50 a with a dehumidification function according to Embodiment 1-2 of the present invention will be described with reference to FIG. 4 . Fig. 4 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-2 of the present invention.

As shown in Figure 4, the heat exchange type ventilator 10a is provided with a branch damper 43, which divides the exhaust flow 2 before the heat exchange into two streams (the first exhaust flow 2a, the second exhaust flow Stream 2b). The first exhaust flow 2 a is an air flow introduced to the heat exchange element 12 , and the second exhaust flow 2 b is an air flow introduced to the dehumidifier 30 . In addition, the branch damper 43 divides the exhaust flow 2 so that the air volume of the second exhaust flow 2b is smaller than the air volume of the first exhaust flow 2a.

In the heat exchange type ventilator 10a, the first exhaust flow 2a of the divided exhaust flow 2 passes through the heat exchange element 12, and then flows from the exhaust air passage 4 (exhaust port 15 in FIG. 2 ) to the outside. discharge. On the other hand, the second exhaust flow 2 b is led out to the exhaust air duct 4 after heat exchange after passing through the radiator 32 of the dehumidifier 30 . In the present embodiment, the heat exchange type ventilator 10 a is configured so that the first exhaust flow 2 a subjected to heat exchange through the heat exchange element 12 and the second exhaust flow after passing through the radiator 32 of the dehumidifier 30 2b is discharged to the outside after merging.

According to the heat exchange type ventilator 50a with a dehumidification function of Embodiment 1-2, in summer, the temperature of the exhaust stream before heat exchange is lower than that of the exhaust stream 2 after heat exchange (the first exhaust stream 2a). 2 (the second exhaust flow 2b) is introduced into the dehumidifier 30, so the radiator 32 can be cooled more effectively. Therefore, the temperature rise of the dehumidified air (supply air flow 3 ) can be further suppressed.

(Embodiment 1-3)

The heat exchange type ventilator 50b with a dehumidification function according to Embodiment 1-3 of the present invention is configured to mix the exhaust stream 2 before heat exchange with the exhaust stream 2 after heat exchange in the heat exchange type ventilator 10b. It is different from Embodiments 1-1 and 1-2 in that a part thereof is then introduced into the dehumidifier 30 . The structure of the heat exchange type ventilator 50b with a dehumidification function is the same as that of the heat exchange type ventilator 50 with a dehumidification function in Embodiment 1-1 or the heat exchange type ventilator with a dehumidification function in Embodiment 1-2. Gas device 50a is the same. Hereinafter, re-description of the contents described in Embodiments 1-1 and 1-2 will be appropriately omitted, and points different from Embodiments 1-1 and 1-2 will be mainly described.

A heat exchange type ventilator 50b with a dehumidification function according to Embodiment 1-3 of the present invention will be described with reference to FIG. 5 . Fig. 5 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-3 of the present invention.

As shown in FIG. 5, in the heat exchange type ventilator 10b, the switching damper 40 is provided in the exhaust air path 4 after heat exchange similarly to Embodiment 1-1. In addition, in the heat exchange type ventilator 10b, similar to Embodiment 1-2, the branch damper 43 which divides the exhaust flow 2 before heat exchange into the 1st exhaust flow 2a and the 2nd exhaust flow 2b is provided. .

In the heat exchange type ventilator 10 b , the first exhaust flow 2 a among the divided exhaust flows 2 passes through the heat exchange element 12 , and then is led out to the dehumidifier 30 through the switching damper 40 of the exhaust air passage 4 . At this time, the second exhaust gas flow 2 b that bypasses the heat exchange element 12 is mixed with the first exhaust gas flow 2 a. That is, the exhaust flow 2 obtained by mixing the first exhaust flow 2 a after heat exchange and the second exhaust flow 2 b before heat exchange is introduced into the dehumidifier 30 . Then, the exhaust gas flow 2 introduced into the dehumidifier 30 passes through the radiator 32, and then is led out to the exhaust air passage 4 after heat exchange in the heat exchange type ventilator 10b.

According to the heat exchange type ventilator 50b with a dehumidification function of Embodiment 1-3, the second exhaust flow 2b before heat exchange is merged with the first exhaust flow 2a after heat exchange, so the temperature can be lower than The air volume of the exhaust stream 2 (mixed exhaust stream) introduced into the dehumidifier 30 is increased in the state of the heat-exchanged first exhaust stream 2a. Therefore, the cooling of the radiator 32 can be effectively performed, and the temperature rise of the dehumidified air (supply air flow) can be suppressed.

(Embodiments 1-4)

The heat exchange type ventilator 50c with a dehumidification function according to Embodiment 1-4 of the present invention differs from Embodiment 1-3 in that the radiator and expander constituting the refrigeration cycle of the dehumidifier 30a have a two-stage structure. The structure of the heat-exchange-type ventilator 50c with a dehumidification function other than this is the same as that of the heat-exchange-type ventilator 50b with a dehumidification function of Embodiment 1-3. Hereinafter, re-description of the contents described in Embodiment 1-3 will be appropriately omitted, and points different from Embodiment 1-3 will be mainly described.

A heat exchange type ventilator 50c with a dehumidification function according to Embodiment 1-4 of the present invention will be described with reference to FIG. 6 . Fig. 6 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-4 of the present invention.

As shown in FIG. 6, the dehumidifier 30a in the heat exchange type ventilator 50c with a dehumidification function has the 1st radiator 32a and the 2nd radiator 32b different from the 1st radiator 32a as the radiator 32A. Moreover, the dehumidifier 30a has the 1st expander 33a and the 2nd expander 33b different from the 1st expander 33a as expander 33A. In addition, the refrigeration cycle in the dehumidifier 30a is configured by sequentially connecting the compressor 31, the first radiator 32a, the first expander 33a, the second radiator 32b, the second expander 33b, and the heat absorber 34. In addition, the heat exchanger 35 is disposed between the heat absorber 34 and the second radiator 32b similarly to the conventional heat exchanger 1111 (see FIG. 9 ).

The compressor 31 in the present embodiment is different from the compressor 31 in Embodiments 1-3 in that the temperature of the refrigerant gas is raised to about 50° C. and introduced into the first radiator 32 a.

The first radiator 32a passes through the exhaust flow 2 introduced into the dehumidifier 30a (the exhaust flow obtained by mixing the first exhaust flow 2a after heat exchange and the second exhaust flow 2b before heat exchange). A device that exchanges heat between them and discharges heat to the outside (outside the refrigeration cycle). In addition, the second radiator 32b is a device that discharges heat to the outside (outside the refrigeration cycle) by exchanging heat with the supply airflow 3 (the first supply airflow 3a, the second supply airflow 3b) introduced into the dehumidifier 30a. .

Here, the temperature of the refrigerant introduced into the first radiator 32a is adjusted to about 50°C by the compressor 31, and the temperature of the refrigerant introduced into the second radiator 32b is adjusted to about 27°C by the first expander 33a.

The details will be described later, but the first expander 33a responds to the high-pressure gas-liquid two-phase refrigerant (refrigerant in a state where gaseous refrigerant and liquid refrigerant are mixed) introduced from the first radiator 32a. A device that depressurizes the refrigerant to a predetermined temperature (for example, about 27°C, which is the room temperature), and a medium-pressure two-phase refrigerant. In addition, the second expander 33b is a device that decompresses the medium-pressure subcooled liquid refrigerant introduced from the second radiator 32b to turn it into a low-temperature, low-pressure gas-liquid two-phase refrigerant.

Then, the first air supply air 3 a introduced into the dehumidifier 30 a flows through the heat absorber 34 , the first flow path 36 of the heat exchanger 35 , and the second radiator 32 b sequentially, and then is led out to the air supply air path 5 . On the other hand, the second supply air flow 3b introduced into the dehumidifier 30a passes through the second flow path 37 of the heat exchanger 35 and the second radiator 32b in this order, and then is led out to the supply air path 5 . In addition, the exhaust flow 2 introduced into the dehumidifier 30a (exhaust flow obtained by mixing the first exhaust flow 2a after heat exchange and the second exhaust flow 2b before heat exchange) passes through the first radiator in succession. After 32a, it is led out to the exhaust air path 4.

Next, the operation|movement of the refrigeration cycle of the dehumidifier 30a in the heat exchange type ventilator 50c with a dehumidification function is demonstrated using FIG. Fig. 7 is a Mollier diagram during a dehumidification operation of the heat exchange type ventilator with a dehumidification function according to Embodiment 1-4 of the present invention. Here, the vertical axis represents the pressure of the refrigerant, and the horizontal axis represents the specific enthalpy of the refrigerant. In addition, the region S1 of Fig. 7 is a superheated vapor region (the region where the refrigerant exists as superheated vapor), the region S2 is the wet vapor region (the region where the refrigerant exists as a wet vapor), and the region S3 is the supercooled liquid region (the refrigerant area that exists as a supercooled liquid). In addition, the curve S4 in FIG. 7 is a curve composed of a saturated vapor line (the boundary line between the regions S1 and S2 ) and a saturated liquid line (the boundary line between the regions S2 and S3 ) sandwiching a critical point (not shown).

First, as shown in FIG. 7, in the dehumidifier 30a, high-temperature and high-pressure gas refrigerant is discharged from the compressor 31, and the high-temperature and high-pressure gas refrigerant flows into the first radiator 32a (point A in FIG. 7).

Then, the gas refrigerant that has flowed into the first radiator 32a exchanges heat with the exhaust gas flow 2 introduced into the dehumidifier 30a, and is condensed into a gas refrigerant that has been cooled compared with the discharge temperature or dryness (gas ratio ) higher gas-liquid two-phase refrigerant, and flows out of the first radiator 32a (point B in FIG. 7 ). On the other hand, the exhaust flow 2 whose temperature has been raised by passing through the first radiator 32a is led out to the exhaust air passage 4 after heat exchange, and is discharged to the outside.

Then, the gas refrigerant or gas-liquid two-phase refrigerant flowing out of the first radiator 32a is decompressed from high pressure to medium pressure by the first expander 33a, and the condensation temperature is lowered to a predetermined temperature (room temperature), and flows into the second radiator 32a. Two radiators 32b (point C of FIG. 7).

Then, the gas-liquid two-phase refrigerant at a predetermined temperature and medium pressure that has flowed into the second radiator 32b exchanges heat with the dehumidified supply air flow 3 (the first supply air flow 3a, the second supply air flow 3b), and is condensed into The gas-liquid two-phase refrigerant or subcooled liquid refrigerant with relatively low dryness flows out of the second radiator 32b (point D in FIG. 7 ). On the other hand, the supply airflow 3 introduced into the dehumidifier 30a (in particular, the first supply airflow 3a having exchanged heat with the heat absorber 34) rises to a predetermined temperature ( room temperature), it is exported to the air supply air path 5 and blown out to the room. More precisely, the supply air flow 3 after flowing through the second radiator 32b has a temperature between the temperature of the supply air flow 3 introduced into the second radiator 32b and the temperature of the refrigerant introduced into the second radiator 32b, and is controlled by blow out.

Then, the subcooled liquid refrigerant flowing out of the second radiator 32b is decompressed by the second expander 33b to become a gas-liquid two-phase refrigerant, and flows into the heat absorber 34 (point E in FIG. 7 ).

The gas-liquid two-phase refrigerant flowing into the heat absorber 34 exchanges heat with the first supply air flow 3a before dehumidification, so that the gas-liquid two-phase refrigerant becomes a refrigerant with a relatively high dryness or a gas refrigerant, and flows out to absorb heat device 34 (point F of FIG. 7). On the other hand, since the first air supply air 3a cooled by the heat absorber 34 becomes air lower than the dew point temperature, dew can be condensed, and the moisture of the first air supply air 3a can be removed. The gaseous refrigerant flowing out of the heat absorber 34 is sucked into the compressor 31 .

In such a refrigeration cycle, the temperature of the supply air flow 3 raised by the second radiator 32b can be adjusted to a predetermined temperature (indoor temperature) by depressurizing the refrigerant to an intermediate pressure by the first expander 33a. Therefore, even if the dehumidifier 30a exchanges heat between the supply airflow 3 and the second radiator 32b, the temperature of the supply airflow 3 can be raised to a predetermined temperature level.

It will be described in more detail. In the radiator 32 of Embodiment 1-3, heat exchange is performed between the supply air flow 3 flowing through the radiator 32 and the refrigerant (temperature: about 45° C.) introduced into the radiator 32 . Therefore, the air supply air 3 after passing through the radiator 32 is heated up to about 45° C. at the maximum and blown out. On the other hand, in the second radiator 32b of the present embodiment, heat exchange is performed between the supply air flow 3 introduced into the second radiator 32b and the refrigerant (temperature: about 27°C) introduced into the second radiator 32b . Therefore, the air supply air 3 after passing through the second radiator 32b is heated up to about 27° C. at the maximum and blown out. That is, the temperature of the refrigerant is adjusted to a predetermined temperature (about 27° C.) by the first expander 33 a so that the supply air flow 3 that exchanges heat with the refrigerant does not become higher than the predetermined temperature (indoor temperature). temperature.

Here, the dehumidifier 30a of the present embodiment is adjusted so that the energy equivalent to the energy absorbed by the heat absorber 34 and the energy for circulating the refrigerant in the refrigeration cycle in the compressor 31 is discharged through the first radiator 32a. most of the heat. Thereby, the amount of heat discharged through the second radiator 32b can be reduced, and the temperature of the refrigerant introduced into the second radiator 32b can be lowered to about 27°C.

According to the heat exchange type ventilator 50c with dehumidification function of Embodiment 1-4, the refrigerant in the refrigeration cycle (refrigerated from the first radiator 32a cooled by the exhaust flow 2) is cooled by the first expander 33a. agent) to depressurize the temperature of the second radiator 32b lower than the temperature of the first radiator 32a, so that the temperature of the supply airflow 3 in the case of heat exchange between the supply airflow 3 and the second radiator 32b can be suppressed. The temperature rises. That is, it is possible to provide a heat exchange type ventilator 50c with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

(Embodiments 1-5)

The heat exchange type ventilator 50d with a dehumidification function according to Embodiment 1-5 of the present invention differs from Embodiment 1-1 in that an auxiliary fan 38 is provided between the heat exchanger 35 and the radiator 32 in the dehumidification device 30. different. The structure of the heat exchange type ventilator 50d with a dehumidification function other than this is the same as that of the heat exchange type ventilator 50 with a dehumidification function in Embodiment 1-1. Hereinafter, re-description of the content described in Embodiment 1-1 will be appropriately omitted, and points different from Embodiment 1-1 will be mainly described.

A heat exchange type ventilator 50d with a dehumidification function according to Embodiment 1-5 of the present invention will be described with reference to FIG. 8 . Fig. 8 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 1-5 of the present invention.

As shown in FIG. 8, in the dehumidifier 30b of the heat exchange type ventilator 50d with a dehumidification function, an auxiliary air passage is provided in the air passage connecting the second flow passage 37 of the heat exchanger 35 and the radiator 32. fan38. The auxiliary fan 38 is a device other than the branch damper 42 for increasing or decreasing the amount of air (second supply air flow 3 b ) flowing into the second flow path 37 . It should be noted that the auxiliary fan 38 and the branch damper 42 correspond to the "air volume adjustment unit" of the technical solution.

The auxiliary fan 38 has a structure including a blade portion and a motor portion that rotates the blade portion. The auxiliary fan 38 can increase or decrease the air volume of the air (second supply air flow 3 b ) flowing into the second flow path 37 by controlling the rotation speed of the blade portion. That is, the ratio of the air volume of the first supply air flow 3 a flowing through the first flow path 36 to the air volume of the second supply air flow 3 b flowing through the second flow path 37 can be changed by the auxiliary fan 38 .

According to the heat exchange type ventilator 50d with a dehumidification function according to Embodiment 1-5, the auxiliary fan 38 can easily make the air volume of the first supply air flow 3a flowing in the first flow path 36 larger than that in the second flow path 37. The air volume of the circulating second supply airflow 3b. Thereby, the temperature of the 2nd supply airflow 3b which flows through the 2nd flow path 37 can be effectively lowered, and the dehumidification effect with respect to the 2nd supply airflow 3b can be improved.

As mentioned above, although this invention was demonstrated based on embodiment, it is easy to guess that this invention is not limited to the said embodiment at all, and various improvement and deformation|transformation are possible in the range which does not deviate from the summary of this invention. For example, the numerical values listed in the above-mentioned embodiments are examples, and other numerical values can of course be adopted.

In the heat exchange type ventilator 50c with a dehumidification function according to Embodiment 1-4, as the first expander 33a, for example, a refrigerant switch having a function of opening and closing to increase or decrease the refrigerant circulation amount in the refrigeration cycle may be used. The structure of the closing part and the driving part that drives the refrigerant opening and closing part. In this manner, by driving the drive unit to increase the opening degree of the refrigerant opening and closing unit, the decompression amount of the refrigerant can be reduced, and the temperature of the introduced supply air flow 3 can be raised. On the other hand, by reducing the opening degree of the refrigerant opening and closing part, the decompression amount of the refrigerant can be increased, and the temperature of the introduced supply air flow 3 can be lowered. That is, by using such a first expander 33a, the decompression amount of the refrigerant can be controlled, and thus the temperature (upper limit temperature) after heat exchange in the second radiator 32b can be controlled.

In addition, in the heat exchange type ventilator 50c with a dehumidification function according to Embodiment 1-4, as shown in FIG. It also has the structure of the 1st temperature sensor 44, the 2nd temperature sensor 45, and the 1st control part (not shown). The first temperature sensor 44 detects the temperature of the exhaust flow 2 before heat exchange. The second temperature sensor 45 detects the temperature of the supply air flow 3 after passing through the second radiator 32b. The first control unit controls the first expander 33a. Based on the temperature detected by the first temperature sensor 44, the first control unit opens and closes the refrigerant opening and closing unit of the first expander 33a so that the temperature detected by the second temperature sensor 45 falls within a predetermined temperature range. Control drive unit. In particular, when the temperature at the second temperature sensor 45 is higher than the temperature at the first temperature sensor 44, the first control unit operates the drive unit in such a manner as to reduce the opening degree of the refrigerant opening and closing unit, thereby increasing the cooling capacity. The depressurization amount of the agent reduces the temperature of the supply air stream 3. Accordingly, in the heat exchange type ventilator 50c with a dehumidification function, it is possible to supply the supply air flow 3 having the same temperature as the first temperature sensor 44 (exhaust air flow 2 before heat exchange sucked from the room).

In addition, the control method of the first control unit may be changed so that the supply air flow 3 having a temperature different from that of the first temperature sensor 44 may be supplied. As long as it does not impair the comfort of indoor users, the air supply air 3 whose temperature is lower than the temperature of the first temperature sensor 44 is supplied indoors in summer. In addition, in winter, the air supply air 3 whose temperature is higher than the temperature of the first temperature sensor 44 is supplied to the room. Thereby, heat exchange and ventilation can be performed, and the supply air flow 3 of the temperature and humidity comfortable to a user can be supplied indoors.

In addition, in the heat exchange type ventilator 50d with a dehumidification function according to Embodiment 1-5, as shown in FIG. , and the structure of a second control unit (not shown) that controls the auxiliary fan 38 . The second control unit calculates the amount of dehumidification required in the dehumidifier 30 based on the temperature detected by the temperature and humidity sensor 46 . Then, the second control unit adjusts the ratio of the air volume of the first supply air flow 3a flowing through the first flow path 36 to the air volume of the second supply air flow 3b flowing through the second flow path 37 according to the calculated required dehumidification amount. The auxiliary fan 38 is controlled in a prescribed relationship. Thereby, in the heat exchange type ventilator 50d with a dehumidification function, dehumidification with respect to the 2nd supply airflow 3b which circulates in the 2nd flow path 37 can be performed efficiently.

In addition, in the heat exchange type ventilators 50, 50a to 50d with a dehumidification function according to Embodiments 1-1 to 1-5, a sensible heat type heat exchange element is used as the heat exchanger 35, but as the sensible heat For the type heat exchange element, it is preferable that the members constituting the first flow path 36 and the second flow path 37 of the heat exchange element have waterproofness (hydrophobicity). As a member having water repellency (water repellency), resin members such as polypropylene and polystyrene are used, for example. In this way, the dew condensation water generated inside the heat exchange element easily flows out of the heat exchange element, so dehumidification can be performed without reducing the heat exchange efficiency of the heat exchanger 35 due to the dew condensation water.

(Embodiment 2)

Conventionally, a heat exchange type ventilator that performs heat exchange between a supply airflow and an exhaust airflow during ventilation is known as an apparatus that can ventilate without impairing the effect of cooling or heating.

In recent years, due to the influence of global warming and the improvement of the airtightness of houses, especially in summer, the indoor heat and humidity are not exhausted, and the indoor becomes hot and humid, so there is a possibility that the indoor comfort of the occupants is impaired. concerns. In order to improve indoor comfort in summer, it is particularly important to reduce indoor humidity, so heat exchange ventilation devices with a dehumidification function that perform heat exchange and ventilation while adjusting indoor humidity have been sought. Therefore, as a heat-exchange-type ventilator with a dehumidification function, we have developed a heat-exchange-type ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a dehumidifier combining a refrigeration cycle and a heat exchanger, for example, a dehumidifier described in Patent Document 1 is known.

As shown in FIG. 9 , a conventional dehumidifier 1100 is configured such that after air (air X, air Y) sucked into a main body casing 1102 from an air inlet 1101 passes through a dehumidifier 1103, the air is blown out from an air outlet 1104. Blow out to the outside of the main body casing 1102 . The dehumidifier 1103 includes a refrigeration cycle and a heat exchanger 1111 . In the refrigeration cycle, a compressor 1105, a radiator 1106, an expander 1107, and a heat absorber 1108 are sequentially connected. The heat exchanger 1111 is disposed between the heat absorber 1108 and the radiator 1106 , and performs heat exchange between the air X flowing in the first flow path 1109 and the air Y flowing in the second flow path 1110 .

Then, the air X flowing through the first flow path 1109 is cooled by the heat absorber 1108 to generate dew condensation. The condensation water generated by the cooled air X is recovered. On the other hand, the air Y flowing through the second flow path 1110 exchanges heat with the air X cooled by the heat absorber 1108 to be cooled, and dew condensation occurs. Dew condensation water generated from the cooled air Y is also recovered. In this way, dehumidification of air is performed by the dehumidifier 1100 .

However, the conventional dehumidifier 1100 is configured to pass dehumidified air through the radiator 1106 in order to cool the radiator 1106 of the refrigeration cycle. In the radiator 1106, in addition to the energy absorbed by the heat absorber 1108, the energy for circulating the refrigerant in the refrigeration cycle by the compressor 1105 is also discharged. Therefore, the temperature of the dehumidified air that has passed through the radiator 1106 rises to be equal to or higher than the temperature of the air before dehumidification. As a result, when the dehumidification mechanism of the conventional dehumidification device 1100 is arranged in the air supply air path of the heat exchange type ventilator to perform dehumidification, the dehumidified air (air whose temperature has been raised) is generated as it is. The problem that the supply air is blown into the room and impairs the comfort of the room.

The present invention was made in order to solve the above-mentioned problems, and provides a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

In order to achieve this object, the heat exchange type ventilator with dehumidification function of the present invention is characterized in that the heat exchange type ventilator with dehumidification function includes: heat exchange between them, the exhaust flow flows through the exhaust air passage for exhausting indoor air to the outside, and the supply air flow circulates through the air supply air passage for supplying outdoor air to the indoor; and the dehumidification device , which dehumidifies the supply air stream. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. The air supply air introduced into the dehumidification device flows through the second flow path, the heat absorber, the first flow path, and the radiator in sequence, and then is exported to the air supply air path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to the present invention, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

The heat exchange type ventilator with dehumidification function of the present invention includes: a heat exchange type ventilator that performs heat exchange between an exhaust flow and a supply air flow for discharging indoor air to the outside. The exhaust air path circulates, and the supply air flow circulates in the air supply air path for supplying outdoor air to the room; and the dehumidification device dehumidifies the supply air flow. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. The air supply air introduced into the dehumidification device flows through the second flow path, the heat absorber, the first flow path, and the radiator in sequence, and then is exported to the air supply air path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to such a structure, the cooling (exhaust heat) of the radiator in the dehumidification device can be obtained by the exhaust flow from the heat exchange type ventilator (in summer when dehumidification is required, the exhaust flow is lower in temperature than the supply air flow). The energy required can suppress the temperature rise of the dehumidified air (supply air flow). As a result, even when a dehumidifier combining a refrigeration cycle and a heat exchanger is applied, electricity can be used to transport a supply air flow in which a temperature rise accompanying dehumidification is suppressed. In other words, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

Alternatively, the exhaust flow introduced into the dehumidifier may be an exhaust flow before heat exchange.

According to such a structure, since the exhaust flow before heat exchange whose temperature is lower than the exhaust flow after heat exchange is used, the radiator can be cooled more effectively, and thus the temperature rise of the dehumidified air (supply air flow) can be further suppressed. .

Alternatively, the exhaust flow introduced into the dehumidifier may be an exhaust flow obtained by merging the exhaust flow before heat exchange and the exhaust flow after heat exchange.

According to such a configuration, since the exhaust flow before heat exchange and the exhaust flow after heat exchange are merged, it is possible to increase the exhaust flow introduced into the dehumidifier while keeping the temperature lower than that of the exhaust flow after heat exchange. air volume. Therefore, the radiator can be effectively cooled, and the temperature rise of the dehumidified air (supply air flow) can be suppressed.

In addition, in the heat exchange type ventilator with a dehumidification function according to the present invention, the radiator may have a first radiator and a second radiator different from the first radiator, and the expander may have a first expander. and a second expander different from the first expander. The refrigeration cycle is configured by sequentially connecting a compressor, a first radiator, a first expander, a second radiator, a second expander, and a heat absorber. The heat exchanger is arranged between the heat absorber and the second radiator. The air supply air introduced into the dehumidification device flows through the second flow path, the heat absorber, the first flow path, and the second radiator in sequence, and then is led out to the air supply air path. The exhaust flow introduced into the dehumidifier passes through the first radiator, and then is led out to the exhaust air passage.

According to such a configuration, the refrigerant in the refrigeration cycle (refrigerant introduced from the first radiator cooled by the exhaust flow) is decompressed by the first expander, so that the refrigerant introduced to the second radiator can be decompressed. Since the temperature of the refrigerant is lower than the temperature of the refrigerant introduced into the first radiator, it is possible to suppress an increase in the temperature of the supply air flow when heat exchange is performed between the supply air flow and the second radiator. In other words, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

In addition, the dehumidification device may be configured to further include an air passage switching unit that switches between an air passage in the first dehumidification mode and an air passage in a second dehumidification mode different from the first dehumidification mode. In the first dehumidification mode, the air supply air introduced into the dehumidification device flows through the second flow path, the heat absorber, the first flow path, and the radiator in sequence, and then is exported to the air supply air path. In the second dehumidification mode, part of the supply air flow introduced into the dehumidification device flows through the heat absorber, the first flow path, and the radiator in sequence, and then is led out to the supply air flow path. In addition, another part of the supply air flow introduced into the dehumidifier flows through the second flow path and the radiator in sequence, and then is led out to the supply air flow path.

According to such a configuration, in the heat exchange type ventilator with a dehumidification function capable of suppressing temperature rise of dehumidified air (supply air flow), switching of the dehumidification capability of the dehumidification device requested by the user can be easily performed.

Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and does not limit the technical scope of this invention. In addition, in all drawings, the same code|symbol is attached|subjected to the same part, and description is abbreviate|omitted. In addition, the description of each drawing will be omitted in order to avoid repetition of the details of each part that is not directly related to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(premise example)

First, a heat exchange type ventilator serving as a premise example of an embodiment of the present invention will be described with reference to FIGS. 10 and 11 . Fig. 10 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house. Fig. 11 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

In FIG. 10 , a heat exchange type ventilator 110 is installed in a room of a house 101 . The heat exchange type ventilator 110 is a device that ventilates while exchanging heat between indoor air and outdoor air.

As shown in FIG. 10 , the exhaust flow 102 is discharged to the outdoors via the heat exchange type ventilator 110 as indicated by the black arrow. Exhaust flow 102 is the flow of air discharged from the room to the outside. In addition, the supply air flow 103 is taken into the room via the heat exchange type ventilator 110 as indicated by a white arrow. The supply air flow 103 is an air flow taken into the room from the outside. For example, taking winter in Japan as an example, the temperature of the exhaust air flow 102 is 20° C. to 25° C., whereas the supply air flow 103 may be below the freezing point. The heat exchange type ventilator 110 performs ventilation, and during the ventilation, transfers the heat of the exhaust flow 102 to the supply flow 103 to suppress unnecessary heat emission.

As shown in FIG. 11 , the heat exchange type ventilator 110 has a main body casing 111, a heat exchange element 112, an exhaust fan 113, an inner air port 114, an exhaust port 115, an air supply fan 116, an outer air port 117, and an air supply port 118. , exhaust air path 104, air supply air path 105. The main body casing 111 is an outer frame of the heat exchange type ventilator 110 . An inner air port 114 , an exhaust port 115 , an outer air port 117 , and an air supply port 118 are formed on the outer periphery of the main body casing 111 . The inner air port 114 is a suction port for sucking the exhaust flow 102 into the heat exchange type ventilator 110 . The exhaust port 115 is a discharge port for discharging the exhaust flow 102 from the heat exchange type ventilator 110 to the outside. The external air port 117 is a suction port for sucking the supply air flow 103 into the heat exchange type ventilator 110 . The air supply port 118 is a discharge port for discharging the supply air flow 103 from the heat exchange type ventilator 110 into the room.

A heat exchange element 112 , an exhaust fan 113 , and an air supply fan 116 are installed inside the main body casing 111 . In addition, an exhaust air passage 104 and an air supply air passage 105 are formed inside the main body casing 111 . The heat exchange element 112 is a member for exchanging heat (sensible heat and latent heat) between the exhaust flow 102 flowing through the exhaust air passage 104 and the supply air flow 103 flowing through the supply air passage 105 . The exhaust fan 113 is a blower for sucking the exhaust flow 102 from the inner air port 114 and discharging it from the exhaust port 115 . The supply air fan 116 is a blower for sucking the supply air 103 from the external air port 117 and discharging it from the air supply port 118 . The exhaust air passage 104 is an air passage connecting the inner air port 114 and the exhaust port 115 . The air supply air path 105 is an air path connecting the external air port 117 and the air supply port 118 . The exhaust flow 102 sucked in by the exhaust fan 113 is discharged to the outside through the exhaust port 115 via the heat exchange element 112 in the exhaust air passage 104 and the exhaust fan 113 . In addition, the air supply airflow 103 sucked by the air supply fan 116 is supplied into the room from the air supply port 118 via the heat exchange element 112 in the air supply air path 105 and the air supply fan 116 .

When the heat exchange type ventilator 110 performs heat exchange and ventilation, the exhaust fan 113 and the air supply fan 116 of the heat exchange element 112 are operated, so that in the heat exchange element 112, the Heat exchange is performed between the exhaust flow 102 at 104 and the supply flow 103 flowing through the supply air path 105 . Thus, when the heat exchange type ventilator 110 performs ventilation, the heat of the exhaust air flow 102 discharged to the outside is transferred to the air supply air flow 103 taken into the room, thereby suppressing the discharge of unnecessary heat and sending the heat to the room. heat recovery. As a result, during ventilation in winter, it is possible to suppress a decrease in the temperature of the indoor air due to the low-temperature outdoor air. On the other hand, in summer, when ventilation is performed, it is possible to suppress the temperature of the indoor air from rising due to the outdoor air having a high temperature.

Embodiment 2 includes at least the following Embodiment 2-1, Embodiment 2-2, Embodiment 2-3, Embodiment 2-4, and Embodiment 2-5.

(Embodiment 2-1)

Next, a heat exchange type ventilator with a dehumidification function according to Embodiment 2-1 will be described with reference to FIG. 12 . Fig. 12 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-1 of the present invention. It should be noted that in each schematic diagram after FIG. 12 , the exhaust air passage 104 and the air supply air passage 105 are also used as the flow of the exhaust air flow 102 and the air supply air flow 103 in the heat exchange type ventilator 110 (black arrows). ) to mark.

As shown in FIG. 12 , the heat exchange type ventilator 150 with a dehumidification function according to Embodiment 2-1 has a dehumidifier 130 as a mechanism for imparting a dehumidification function to the heat exchange type ventilator 110 of the preceding example. structure.

The dehumidifier 130 is a means for dehumidifying the heat-exchanged supply airflow 103 in the heat exchange type ventilator 110 . The dehumidifier 130 includes: a refrigeration cycle including a compressor 131 , a radiator 132 , an expander 133 , and a heat absorber 134 ; and a heat exchanger 135 . In addition, the refrigeration cycle of the present embodiment is configured such that the compressor 131 , the radiator 132 , the expander 133 , and the heat absorber 134 are sequentially connected in a ring shape. In the refrigeration cycle, for example, alternative Freon (HFC134a) is used as a refrigerant. In addition, copper pipes are often used for connecting the various devices that constitute the refrigeration cycle, and they are connected by welding.

The compressor 131 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigeration cycle to increase the pressure and increase the temperature. In the present embodiment, the compressor 131 raises the temperature of the refrigerant gas to about 45°C.

The radiator 132 is a device for exchanging heat between the refrigerant gas that has become high-temperature and high-pressure by the compressor 131 and air (exhaust flow 102 , supply flow 103 ) to discharge heat to the outside (outside the refrigeration cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 132, since the temperature (about 45 degreeC) of the refrigerant gas introduced is higher than the temperature of air, when heat exchange is performed, the temperature of the air rises and the refrigerant gas is cooled. It should be noted that the radiator 132 is also called a condenser.

The expander 133 is a device that decompresses the high-pressure refrigerant liquefied by the radiator 132 to convert it into an original low-temperature and low-pressure liquid. It should be noted that the expander 133 is also called an expansion valve.

The heat absorber 134 is a device that absorbs heat from the air to evaporate the refrigerant that has passed through the expander 133 , and turns the liquid refrigerant into a low-temperature, low-pressure refrigerant gas. In the heat absorber 134, since the temperature of the refrigerant|coolant introduced is lower than the temperature of air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises. It should be noted that the heat absorber 134 is also called an evaporator.

The heat exchanger 135 is a heat exchanger including sensible heat type heat exchange elements. Heat exchanger 135 is arranged in the space between heat absorber 134 and radiator 132 similarly to heat exchanger 1111 (see FIG. 9 ) in conventional dehumidifier 1100 . Inside the heat exchanger 135 are provided a first flow path 136 through which air flows in a predetermined direction, and a second flow path 137 through which air flows in a direction substantially perpendicular to the first flow path 136 . The first flow path 136 is a flow path that leads the air introduced from the heat absorber 134 to the radiator 132 . The second flow path 137 is a flow path that leads the air introduced from the heat exchange type ventilator 110 to the heat absorber 134 . Furthermore, the heat exchanger 135 exchanges only sensible heat between the air flowing through the first flow path 136 and the air flowing through the second flow path 137 . It should be noted that the air led out of the second flow path 137 of the heat exchanger 135 flows through the air path 138 and is introduced into the heat absorber 134 .

Next, the flow of the airflow (exhaust airflow 102, supply airflow 103) between the heat exchange type ventilator 110 and the dehumidifier 130 will be described with reference to FIG. 12 . It should be noted that, in the following description, the airflow (exhaust airflow 102, supply airflow 103) or air passage (exhaust air passage 104, air supply air passage 105) after heat exchange means that the air flow through the heat exchange type ventilator The air flow or air path behind the heat exchange element 112 in 110 , and the air flow or air path before heat exchange represent the air flow or air path before passing through the heat exchange element 112 .

As shown in FIG. 12 , in the heat exchange type ventilator 110 , a switching damper 140 is provided in the exhaust air passage 104 after heat exchange, and a switching damper 141 is provided in the air supply air passage 105 after heat exchange. The switch damper 140 is used to switch between the state where the exhaust air flow 102 flowing in the exhaust air passage 104 flows to the outside and the state in which the exhaust air flow 102 flowing in the exhaust air passage 104 flows to the dehumidifier 130 . throttle. In addition, the switch damper 141 is for switching between the state where the air supply air 103 flowing through the air supply air passage 105 flows into the room and the state in which the air supply air 103 flowing through the air supply air passage 105 flows to the dehumidifier 130 . throttle.

In the heat exchange type ventilator 150 with a dehumidification function, each switching damper is used to make the airflow flow to the dehumidifier 130 , thereby dehumidifying the heat-exchanged supply airflow 103 . Details about dehumidification will be described later. In addition, in winter when dehumidification is not required, the airflow does not flow to the dehumidifier 130 by each switching damper, and the pressure loss increase by the dehumidifier 130 is suppressed. Accordingly, as the heat exchange type ventilator 150 with a dehumidification function, it is possible to realize energy-saving operation throughout the year.

In the dehumidification device 130, the air supply air 103 introduced to the inside flows through the second flow path 137 of the heat exchanger 135, the heat absorber 134, the first flow path 136 of the heat exchanger 135, and the radiator 132 in sequence, and then transfers heat to the heat exchanger 130. The air supply air path 105 after the heat exchange in the type ventilator 110 is led out. On the other hand, the exhaust flow 102 introduced into the dehumidifier 130 passes through the radiator 132 and then is led out to the exhaust air passage 104 after heat exchange in the heat exchange type ventilator 110 . That is, in the present embodiment, the dehumidifier 130 is configured to cool the radiator 132 by the exhaust flow 102 introduced from the heat exchange type ventilator 110 .

Next, the dehumidification operation of the heat exchange type ventilator 150 with a dehumidification function according to Embodiment 2-1 will be described.

First, by operating the heat exchange type ventilator 150 with a dehumidification function, the exhaust fan 113 and the air supply fan 116 are driven, and the exhaust air flowing through the exhaust air passage 104 is generated inside the heat exchange type ventilator 110 . Flow 102 and supply airflow 103 circulating in supply air path 105 .

For example, in summer, the exhaust air flow 102 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 103 is outdoor air with high temperature and humidity.

The exhaust flow 102 and the supply flow 103 exchange sensible heat and latent heat inside the heat exchange type ventilator 110 (heat exchange element 112 ). At this time, moisture moves from the high-temperature and high-humidity supply airflow 103 to the exhaust flow 102, so the moisture in the supply airflow 103 is removed. That is, dehumidification (first dehumidification) for the supply airflow 103 is performed by total heat exchange inside the heat exchange type ventilator 110 .

Next, the heat-exchanged supply airflow 103 is introduced into the dehumidifier 130 and dehumidified. Specifically, the supply air flow 103 introduced into the dehumidifier 130 first flows into the second flow path 137 of the heat exchanger 135, and is heated with the supply air flow 103 cooled by the heat absorber 134 in the first flow path 136 described later. exchange. As a result, the supply air flow 103 in the second flow path 137 is cooled to condense dew, and thus the moisture in the supply air flow 103 is removed. That is, dehumidification (second dehumidification) of the supply air flow 103 in the second flow path 137 is performed by exchanging sensible heat in the heat exchanger 135 .

Furthermore, the feed air stream 103 subjected to sensible heat exchange (cooling) in the heat exchanger 135 is further cooled by the heat absorber 134 . Thereby, the temperature of the supply airflow 103 becomes below dew point temperature, and since the supply airflow 103 condenses dew, the moisture of the supply airflow 103 is removed. That is, dehumidification (third dehumidification) of the supply air flow 103 introduced from the second flow path 137 of the heat exchanger 135 is performed by passing through the heat absorber 134 . The supply air flow 103 cooled by the heat absorber 134 is introduced into the first flow path 136 of the heat exchanger 135 .

That is, the heat exchange type ventilator 150 with a dehumidification function performs dehumidification (the first dehumidification to the third dehumidification) by the heat exchange type ventilator 110, the heat absorber 134, and the heat exchanger 135. Moisture is removed from the outdoor high-temperature and humid supply airflow 103, at this time, the required dehumidification capacity is ensured.

And, the dehumidifier 130 in the heat exchange type ventilator 150 with dehumidification function is configured to introduce the exhaust flow 102 from the exhaust air passage 104 of the heat exchange type ventilator 110 and make the introduced exhaust flow 102 flow through the radiator. 132 in circulation. In the radiator 132 , heat equivalent to the energy absorbed in the heat absorber 134 and the energy for circulating the refrigerant in the refrigeration cycle in the compressor 131 is discharged by the introduced exhaust flow 102 . The exhaust flow 102 that has absorbed heat from the radiator 132 is led out to the exhaust air passage 104 and directly discharged outdoors. That is, the radiator 132 is cooled by the incoming exhaust gas flow 102 . And, as a result, the temperature rise of the supply air flow 103 accompanying the flow through the radiator 132 is suppressed.

According to the heat exchange type ventilator 150 with dehumidification function of Embodiment 2-1, the exhaust gas flow 102 from the heat exchange type ventilator 110 (in the summer when dehumidification is required, the exhaust gas flow 102 is lower in temperature than the supply gas flow 103 The airflow 102) obtains the energy required for cooling (heat removal) of the radiator 132 in the dehumidifier 130, so that the temperature rise of the dehumidified air (supply airflow 103) can be suppressed. Even when the dehumidification device 130 combining the refrigeration cycle and the heat exchanger 135 is applied, it is possible to send the supply air flow in which the temperature rise caused by dehumidification is suppressed. That is, it is possible to provide the heat exchange type ventilator 150 with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

(Embodiment 2-2)

The heat exchange type ventilator 150a with a dehumidification function according to Embodiment 2-2 of the present invention is configured to introduce a part of the exhaust gas flow 102 before heat exchange in the heat exchange type ventilator 110a to the dehumidifier 130 It is different from Embodiment 2-1 above. The structure of the heat exchange type ventilator 150a with a dehumidification function other than this is the same as that of the heat exchange type ventilator 150 with a dehumidification function in Embodiment 2-1. Hereinafter, re-description of the content described in Embodiment 2-1 will be appropriately omitted, and points different from Embodiment 2-1 will be mainly described.

A heat exchange type ventilator 150a with a dehumidification function according to Embodiment 2-2 of the present invention will be described with reference to FIG. 13 . Fig. 13 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-2 of the present invention.

As shown in FIG. 13, the heat exchange type ventilator 110a is provided with a branch damper 142, and the branch damper 142 divides the exhaust flow 102 before heat exchange into two airflows (the first exhaust flow 102a, the second exhaust flow stream 102b). The first exhaust flow 102 a is an air flow introduced to the heat exchange element 112 , and the second exhaust flow 102 b is an air flow introduced to the dehumidifier 130 . It should be noted that the branch damper 142 divides the exhaust flow 102 so that the air volume of the second exhaust flow 102b is smaller than the air volume of the first exhaust flow 102a.

In the heat exchange type ventilator 110a, the first exhaust flow 102a of the divided exhaust flow 102 passes through the heat exchange element 112, and then flows from the exhaust air path 104 (exhaust port 115 in FIG. 11 ) to the outside. discharge. On the other hand, after passing through the radiator 132 of the dehumidifier 130 , the second exhaust flow 102 b is led out to the exhaust air passage 104 after heat exchange. In the present embodiment, the heat exchange type ventilator 110a is configured such that the first exhaust flow 102a subjected to heat exchange by the heat exchange element 112 and the second exhaust flow 102b after passing through the radiator 132 of the dehumidifier 130 After confluence, discharge to the outside.

According to the heat exchange type ventilator 150a with a dehumidification function of Embodiment 2-2, in summer, the temperature of the exhaust stream before heat exchange is lower than that of the exhaust stream 102 after heat exchange (the first exhaust stream 102a). 102 (second exhaust flow 102b) is introduced into the dehumidifier 130, so the radiator 132 can be cooled more effectively. Therefore, the temperature rise of the dehumidified air (supply airflow 103 ) can be further suppressed.

(Embodiment 2-3)

The heat exchange type ventilator 150b with a dehumidification function according to Embodiment 2-3 of the present invention is configured to mix the exhaust gas before heat exchange with the exhaust gas flow 102 after heat exchange in the heat exchange type ventilator 110, 110a. The point that a part of the flow 102 is introduced into the dehumidifier 130 is different from Embodiments 2-1 and 2-2. The structure of the heat exchange type ventilator 150b with a dehumidification function is the same as that of the heat exchange type ventilator 150 with a dehumidification function in Embodiment 2-1 or the heat exchange type ventilator with a dehumidification function in Embodiment 2-2. Gas device 150a is the same. Hereinafter, re-description of the contents described in Embodiments 2-1 and 2-2 will be appropriately omitted, and points different from Embodiments 2-1 and 2-2 will be mainly described.

A heat exchange type ventilator 150b with a dehumidification function according to Embodiment 2-3 of the present invention will be described with reference to FIG. 14 . Fig. 14 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-3 of the present invention.

As shown in FIG. 14, in the heat exchange type ventilator 110b, the switching damper 140 is provided in the exhaust air path 104 after heat exchange similarly to Embodiment 2-1. In addition, in the heat exchange type ventilator 110b, the branch damper 142 that divides the exhaust flow 102 before heat exchange into the first exhaust flow 102a and the second exhaust flow 102b is provided similarly to Embodiment 2-2. .

In the heat exchange type ventilator 110 b , the first exhaust flow 102 a among the divided exhaust flows 102 passes through the heat exchange element 112 and is led out to the dehumidifier 130 through the switching damper 140 of the exhaust air passage 104 . At this time, the second exhaust flow 102b bypassing the heat exchange element 112 is mixed with the first exhaust flow 102a. That is, the exhaust flow 102 in which the first exhaust flow 102 a after heat exchange and the second exhaust flow 102 b before heat exchange is mixed is introduced into the dehumidifier 130 . In addition, the exhaust flow 102 introduced into the dehumidifier 130 passes through the radiator 132 and then is led out to the exhaust air passage 104 after heat exchange in the heat exchange type ventilator 110 .

According to the heat exchange type ventilator 150b with dehumidification function according to the embodiment 2-3, the second exhaust flow 102b before heat exchange is combined with the first exhaust flow 102a after heat exchange, so the temperature can be lower than The air volume of the exhaust stream 102 (mixed exhaust stream) introduced into the dehumidifier 130 is increased in the state of the heat-exchanged first exhaust stream 102a. Therefore, the cooling of the radiator 132 can be effectively performed, and the temperature rise of the dehumidified air (supply air flow) can be suppressed.

(Embodiment 2-4)

The heat exchange type ventilator 150c with a dehumidification function according to Embodiment 2-4 of the present invention differs from Embodiment 2-3 in that the radiator and expander constituting the refrigeration cycle of the dehumidifier 130a have a two-stage structure. The structure of the heat exchange type ventilator 150c with a dehumidification function other than this is the same as that of the heat exchange type ventilator 150b with a dehumidification function in Embodiment 2-3. Hereinafter, re-description of the contents described in Embodiment 2-3 will be appropriately omitted, and points different from Embodiment 2-3 will be mainly described.

A heat exchange type ventilator 150c with a dehumidification function according to Embodiment 2-4 of the present invention will be described with reference to FIG. 15 . Fig. 15 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-4 of the present invention.

As shown in FIG. 15 , dehumidifier 130a in heat exchange type ventilator 150c with dehumidification function has first radiator 132a and second radiator 132b different from first radiator 132a as radiator 132A. In addition, the dehumidifier 130a has a first expander 133a and a second expander 133b different from the first expander 133a as the expander 133A. In addition, the refrigeration cycle in the dehumidifier 130a is configured by sequentially connecting the compressor 131, the first radiator 132a, the first expander 133a, the second radiator 132b, the second expander 133b, and the heat absorber 134. In addition, the heat exchanger 135 is arranged between the heat absorber 134 and the second radiator 132b similarly to the conventional heat exchanger 1111 (see FIG. 9 ).

The compressor 131 in this embodiment is different from the compressor 131 in Embodiment 2-3 in that the temperature of the refrigerant gas is increased to about 50° C. and introduced into the first radiator 132 a.

The first radiator 132a passes between the exhaust flow 102 (the exhaust flow formed by mixing the first exhaust flow 102a after heat exchange and the second exhaust flow 102b before heat exchange) introduced into the dehumidifier 130a. Equipment that exchanges heat between them and discharges heat to the outside (outside the refrigeration cycle). In addition, the second radiator 132b is a device that discharges heat to the outside (outside the refrigeration cycle) by exchanging heat with the supply air flow 103 introduced into the dehumidifier 130a.

Here, the temperature of the refrigerant introduced into the first radiator 132a is adjusted to about 50°C by the compressor 131, and the temperature of the refrigerant introduced into the second radiator 132b is adjusted to about 27°C by the first expander 133a.

The details will be described later, but the first expander 133a responds to the high-pressure gas-liquid two-phase refrigerant (refrigerant in a state where gaseous refrigerant and liquid refrigerant are mixed) introduced from the first radiator 132a. A device that depressurizes the refrigerant to a predetermined temperature (for example, about 27°C, which is the room temperature), and a medium-pressure two-phase refrigerant. In addition, the second expander 133b is a device that decompresses the medium-pressure subcooled liquid refrigerant introduced from the second radiator 132b to turn it into a low-temperature, low-pressure gas-liquid two-phase refrigerant.

And, the air supply air 103 introduced into the dehumidifier 130a flows through the second flow path 137 of the heat exchanger 135, the heat absorber 134, the first flow path 136 of the heat exchanger 135, and the second radiator 132b in sequence, and then to the air supply The wind path 105 leads out. On the other hand, the exhaust flow 102 introduced into the dehumidifier 130a (exhaust flow obtained by mixing the first exhaust flow 102a after heat exchange and the second exhaust flow 102b before heat exchange) passes through the first After the radiator 132a, it is led out to the exhaust air duct 104 .

Next, the operation|movement of the refrigeration cycle of the dehumidifier 130a in the heat exchange type ventilator 150c with a dehumidification function is demonstrated using FIG. 16. Fig. 16 is a Mollier diagram during a dehumidification operation of the heat exchange type ventilator with a dehumidification function according to Embodiment 2-4 of the present invention. Here, the vertical axis represents the pressure of the refrigerant, and the horizontal axis represents the specific enthalpy of the refrigerant. In addition, the region S11 of FIG. 16 is a superheated vapor region (the region where the refrigerant exists as superheated vapor), the region S12 is the wet vapor region (the region where the refrigerant exists as wet vapor), and the region S13 is the supercooled liquid region (the region where the refrigerant exists). areas where the agent exists as a supercooled liquid). In addition, the curve S14 in FIG. 16 is a curve composed of a saturated vapor line (the boundary line between the regions S11 and S12 ) and a saturated liquid line (the boundary line between the regions S12 and S13 ) sandwiching a critical point (not shown).

First, as shown in FIG. 16, in the dehumidifier 130a, high temperature and high pressure gas refrigerant is discharged from the compressor 131, and the high temperature and high pressure gas refrigerant flows into the first radiator 132a (point G of FIG. 16).

Then, the gas refrigerant that has flowed into the first radiator 132a exchanges heat with the exhaust gas flow 102 introduced into the dehumidifier 130a, and is condensed into a gas refrigerant that has been cooled compared to the discharge temperature or a dryness (gas ratio) ) higher gas-liquid two-phase refrigerant, and flows out of the first radiator 132a (point H in FIG. 16 ). On the other hand, the exhaust flow 102 whose temperature has been raised by passing through the first radiator 132a is led out to the exhaust air duct 104 after heat exchange, and is discharged to the outside.

Then, the gas refrigerant or gas-liquid two-phase refrigerant flowing out of the first radiator 132a is decompressed from high pressure to medium pressure by the first expander 133a, the condensation temperature is lowered to a predetermined temperature (room temperature), and flows into the second radiator 132a. The heat sink 132b (point I of FIG. 16).

Then, the gas-liquid two-phase refrigerant at a predetermined temperature and medium pressure flowing into the second radiator 132b performs heat exchange with the dehumidified supply air flow 103, thereby condensing into a gas-liquid two-phase refrigerant with a relatively low dryness or an overheated gas-liquid two-phase refrigerant. The liquid refrigerant is cooled, and flows out of the second radiator 132b (point J of FIG. 16). On the other hand, after the supply air flow 103 introduced into the dehumidifier 130a (the supply air flow 103 having exchanged heat with the heat absorber 134) is raised to a predetermined temperature (indoor temperature) by heat exchange with the second radiator 132b, , lead out to the air supply air path 105, and blow out into the room. More precisely, the supply air flow 103 after flowing through the second radiator 132b has a temperature between the temperature of the supply air flow 103 introduced into the second radiator 132b and the temperature of the refrigerant introduced into the second radiator 132b, and is controlled by blow out.

Then, the subcooled liquid refrigerant flowing out of the second radiator 132b is decompressed by the second expander 133b to become a gas-liquid two-phase refrigerant, and flows into the heat absorber 134 (point K in FIG. 16 ).

The gas-liquid two-phase refrigerant flowing into the heat absorber 134 exchanges heat with the supply air flow 103 derived from the second flow path 137 of the heat exchanger 135, so that the gas-liquid two-phase refrigerant becomes a refrigerant with a relatively high dryness or The gas refrigerant flows out of the heat absorber 134 (point L in FIG. 16 ). On the other hand, since the supply air flow 103 cooled by the heat absorber 134 becomes air with a temperature lower than the dew point, dew condensation occurs, and the moisture in the supply air flow 103 can be removed. The gaseous refrigerant flowing out of the heat absorber 134 is sucked into the compressor 131 .

In such a refrigeration cycle, the temperature of the supply air flow 103 raised by the second radiator 132b can be adjusted to a predetermined temperature (indoor temperature) by depressurizing the refrigerant to an intermediate pressure by the first expander 133a. Therefore, even if the dehumidifier 130a exchanges heat between the supply airflow 103 and the second radiator 132b, the temperature of the supply airflow 103 can be raised to a predetermined temperature level.

It will be described in more detail. In the radiator 132 of Embodiment 2-3, heat exchange is performed between the supply air flow 103 flowing through the radiator 132 and the refrigerant (temperature: about 45° C.) introduced into the radiator 132 . Therefore, the supply air flow 103 after passing through the radiator 132 is heated up to about 45° C. at the maximum and blown out. On the other hand, in the second radiator 132b of the present embodiment, heat exchange is performed between the supply air flow 103 introduced into the second radiator 132b and the refrigerant (temperature: about 27° C.) introduced into the second radiator 132b. . Therefore, the air supply air 103 having passed through the second radiator 132b is heated up to about 27° C. at the maximum and blown out. That is, the temperature of the refrigerant is adjusted to a predetermined temperature (about 27° C.) by the first expander 133 a so that the supply air flow 103 that exchanges heat with the refrigerant does not become higher than the predetermined temperature (indoor temperature). temperature.

Here, the dehumidifier 130a of the present embodiment is adjusted to discharge energy equivalent to the energy absorbed in the heat absorber 134 and the energy for circulating the refrigerant in the refrigeration cycle in the compressor 131 through the first radiator 132a. most of the heat. Thereby, the amount of heat discharged through the second radiator 132b can be reduced, and the temperature of the refrigerant introduced into the second radiator 132b can be lowered to about 27°C.

According to the heat exchange type ventilator 150c with dehumidification function in Embodiment 2-4, the refrigerant in the refrigeration cycle (refrigerated from the first radiator 132a cooled by the exhaust flow 102) is refrigerated by the first expander 133a. agent) is decompressed, so that the temperature of the second radiator 132b can be lower than the temperature of the first radiator 132a. Therefore, it is possible to suppress the temperature rise of the supply airflow 103 when the supply airflow 103 has exchanged heat with the second radiator 132b. That is, it is possible to provide a heat exchange type ventilator 150c with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

(Embodiment 2-5)

In the heat exchange type ventilator 150d with a dehumidification function according to Embodiment 2-5 of the present invention, the dehumidifier 130b is provided with a device for switching between the air passage in the first dehumidification mode M1 and the air passage in the second dehumidification mode M2. An air passage switching unit (switching damper 143, switching damper 144, and switching damper 145) and an air passage connecting the air passage switching unit to each device are different from Embodiment 2-1. The structure of the heat exchange type ventilator 150d with a dehumidification function other than this is the same as that of the heat exchange type ventilator 150 with a dehumidification function in Embodiment 2-1. Hereinafter, re-description of the content described in Embodiment 2-1 will be appropriately omitted, and points different from Embodiment 2-1 will be mainly described.

A heat exchange type ventilator 150d with a dehumidification function according to Embodiment 2-5 of the present invention will be described with reference to FIG. 17 . Fig. 17 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 2-5 of the present invention.

As shown in FIG. 17 , dehumidifier 130 b in heat exchange type ventilator 150 d with a dehumidification function includes an air passage switching unit including switching damper 143 , switching damper 144 , and switching damper 145 . The details will be described later, but the air path switching unit switches between the air path and air flow in the first dehumidification mode M1, and the air path and air flow in the second dehumidification mode M2 different from the first dehumidification mode M1. .

The switching damper 143 is a damper for switching the heat-exchanged supply airflow 103 introduced into the dehumidifier 130b between the first state and the second state. The first state is a state in which the supply air flow 103 flows directly to the heat exchanger 135 (the second flow path 137 of the heat exchanger 135 ) without being divided. The second state is a state in which the supply airflow 103 is divided into two airflows (the first supply airflow 103a, the second supply airflow 103b). It should be noted that the first supply airflow 103a is an airflow introduced into the heat absorber 134, and the second supply airflow 103b is an airflow introduced into the heat exchanger 135 (the second flow path 137 of the heat exchanger 135). Moreover, the damper 143 is switched so that the air supply air flow 103 is divided so that the air volume of the second air supply air flow 103b is smaller than the air volume of the first air supply air flow 103a. Here, the first supply airflow 103a corresponds to "a part of the supply airflow introduced into the dehumidifier", and the second supply airflow 103b corresponds to "the other part of the supply airflow introduced into the dehumidifier".

The switching damper 144 is a damper for switching the air (supply air flow 103 ) led out from the second flow path 137 of the heat exchanger 135 between the third state and the fourth state. The third state is a state in which the supply air flow 103 flows toward the heat absorber 134 . The fourth state is a state in which the supply air flow 103 flows toward the radiator 132 .

The switching damper 145 is a damper for switching the air (supply air flow 103 ) led out from the second flow path 137 of the heat exchanger 135 between the fifth state and the sixth state. The fifth state is a state in which the supply air flow 103 flows toward the heat absorber 134 . The sixth state is a state in which the first supply air flow 103 a divided by the switching damper 143 flows toward the heat absorber 134 .

The air passage switching unit constitutes the air passage and the flow of air in the first dehumidification mode M1 by switching between the first state of the switching damper 143 , the third state of the switching damper 144 , and the fifth state of the switching damper 145 . Specifically, in the first dehumidification mode M1, the supply airflow 103 introduced into the dehumidifier 130b passes through the switching damper 143, the second flow path 137 of the heat exchanger 135, the switching damper 144, the air path 138, and the switching damper in sequence. 145 , the heat exchanger 134 , the first flow path 136 of the heat exchanger 135 , and the radiator 132 communicate. Then, it is led out to the supply air duct 105 after heat exchange in the heat exchange type ventilator 110 . This is the same air flow as in Embodiment 2-1. That is, in the first dehumidification mode M1, the same dehumidification effect (first to third dehumidification) as in Embodiment 2-1 can be enjoyed.

In addition, the air passage switching unit constitutes the air passage and the flow of the air flow in the second dehumidification mode M2 by switching between the second state of the switching damper 143, the fourth state of the switching damper 144, and the sixth state of the switching damper 145. . Specifically, in the second dehumidification mode M2, the first supply airflow 103a of the supply airflow 103 introduced into the dehumidification device 130b flows through the switching damper 145, the heat absorber 134, and the first flow path 136 of the heat exchanger 135 in sequence. , The radiator 132 circulates. Then, it is led out to the supply air duct 105 after heat exchange in the heat exchange type ventilator 110 . On the other hand, the second supply air flow 103 b flows through the second flow path 137 of the heat exchanger 135 , the switching damper 144 , and the radiator 132 sequentially. Then, it is led out to the supply air duct 105 after heat exchange. In addition, in the second dehumidification mode M2, the dehumidifier 130b is configured such that the first supply airflow 103a after flowing through the radiator 132 and the second supply airflow 103b after flowing through the radiator 132 merge and flow to the heat-exchanged The air supply air path 105 leads out.

In the second dehumidification mode M2, the first supply air stream 103a is cooled by the heat sink 134 . Thereby, the temperature of the 1st supply airflow 103a becomes below dew point temperature, and since the 1st supply airflow 103a condenses, the moisture of the 1st supply airflow 103a is removed. That is, dehumidification (fourth dehumidification) with respect to the 1st supply airflow 103a is performed by circulating through the heat absorber 134.

In addition, the remaining second supply airflow 103b of the supply airflow 103 introduced into the dehumidifier 130 flows into the second flow path 137 of the heat exchanger 135, and is mixed with the first flow path 136 cooled by the heat absorber 134 in the first flow path 136. Air flow 103a is provided for heat exchange. As a result, the second supply airflow 103b in the second flow path 137 is cooled to condense dew, so the moisture in the second supply airflow 103b is removed. That is, dehumidification (fifth dehumidification) with respect to the 2nd supply airflow 103b is performed by exchanging sensible heat in the heat exchanger 135. FIG.

That is to say, the heat exchange type ventilator 150d with dehumidification function passes through the dehumidification performed by the heat exchange type ventilator 110, the heat absorber 134 and the heat exchanger 135 (the first dehumidification, the fourth dehumidification, the fifth dehumidification). dehumidification) to remove moisture from the outdoor high-temperature and humid supply airflow 103, at this time, the required dehumidification capacity is ensured.

In the second dehumidification mode M2, the heat-exchanged supply airflow 103 introduced into the dehumidification device 130b is divided into two airflows (the first supply airflow 103a and the second supply airflow 103b). In contrast, the increase in pressure loss due to the air passage structure of the dehumidifier 130b is suppressed, and the heat exchange type ventilator 150d with a dehumidification function can realize energy-saving operation throughout the year.

According to the heat-exchange-type ventilator 150d with a dehumidification function of Embodiment 2-5, in the heat-exchange-type ventilator 150d with a dehumidification function that can suppress the temperature rise of the dehumidified air (supply airflow 103 ), it is possible to easily The switching of the dehumidification capability of the dehumidification device 130b requested by the user is performed in a timely manner.

As mentioned above, although this invention was demonstrated based on embodiment, it is easy to guess that this invention is not limited to the said embodiment at all, and various improvement and deformation|transformation are possible in the range which does not deviate from the summary of this invention. For example, the numerical values listed in the above-mentioned embodiments are examples, and other numerical values can of course be adopted.

In the heat exchange type ventilator 150c with a dehumidification function according to Embodiment 2-4, as the first expander 133a, for example, a refrigerant switch having a function of opening and closing to increase or decrease the refrigerant circulation amount in the refrigeration cycle may be used. The structure of the closing part and the driving part that drives the refrigerant opening and closing part. In this way, by driving the drive unit to increase the opening degree of the refrigerant opening and closing unit, the decompression amount of the refrigerant can be reduced, and the temperature of the introduced supply air flow 103 can be increased. On the other hand, by reducing the opening degree of the refrigerant opening and closing part, the decompression amount of the refrigerant can be increased, and the temperature of the introduced supply air flow 103 can be lowered. That is, by using such a first expander 133a, the amount of decompression of the refrigerant can be controlled, so the temperature after heat exchange in the second radiator 132b (upper limit temperature) can be controlled.

In addition, in the heat exchange type ventilator 150c with a dehumidification function according to Embodiment 2-4, as shown in FIG. It also has the structure of the 1st temperature sensor 146, the 2nd temperature sensor 147, and the 1st control part (not shown). The first temperature sensor 146 detects the temperature of the exhaust flow 102 before heat exchange. The second temperature sensor 147 detects the temperature of the supply air flow 103 after passing through the second radiator 132b. The first control unit controls the first expander 133a. Based on the temperature detected by the first temperature sensor 146, the first control unit opens and closes the refrigerant opening and closing unit of the first expander 133a so that the temperature detected by the second temperature sensor 147 falls within a predetermined temperature range. Control drive unit. In particular, when the temperature in the second temperature sensor 147 is higher than the temperature in the first temperature sensor 146, the first control part operates the drive part in a manner that reduces the opening degree of the refrigerant opening and closing part, thereby increasing cooling. The depressurization of the agent reduces the temperature of the feed gas stream 103. Accordingly, in the heat exchange type ventilator 150c with a dehumidification function, the supply air flow 103 having the same temperature as the first temperature sensor 146 (exhaust air flow 102 before heat exchange sucked from the room) can be supplied.

In addition, the control method of the first control unit may be changed so that the supply air flow 103 having a temperature different from that of the first temperature sensor 146 may be supplied. As long as it is within a range that does not impair the comfort of indoor users, the air supply air 103 whose temperature is lower than the temperature of the first temperature sensor 146 is supplied indoors in summer. In addition, in winter, the supply air flow 103 whose temperature is higher than the temperature of the first temperature sensor 146 is supplied to the room. Thereby, heat exchange and ventilation can be performed, and the supply air flow 103 of temperature and humidity comfortable for a user can be supplied indoors.

In addition, in the heat exchange type ventilators 150, 150a to 150d with a dehumidification function according to Embodiments 2-1 to 2-5, a sensible heat type heat exchange element is used as the heat exchanger 135, but as the sensible heat For the type heat exchange element, the members constituting the first flow path 136 and the second flow path 137 of the heat exchange element are preferably waterproof (hydrophobic). As a member having water repellency (water repellency), resin members such as polypropylene and polystyrene are used, for example. In this way, the dew condensation water generated inside the heat exchange element easily flows out of the heat exchange element, so dehumidification can be performed without reducing the heat exchange efficiency of the heat exchanger 135 due to the dew condensation water.

(Embodiment 3)

Conventionally, a heat exchange type ventilator that performs heat exchange between a supply airflow and an exhaust airflow during ventilation is known as an apparatus that can ventilate without impairing the effect of cooling or heating.

In recent years, due to the influence of global warming and the improvement of the airtightness of houses, especially in summer, the indoor heat and humidity are not exhausted, and the indoor becomes hot and humid, so there is a possibility that the indoor comfort of the occupants is impaired. concerns. In order to improve indoor comfort in summer, it is particularly important to reduce indoor humidity, so heat exchange ventilation devices with a dehumidification function that perform heat exchange and ventilation while adjusting indoor humidity have been sought. Therefore, as a heat-exchange-type ventilator with a dehumidification function, we have developed a heat-exchange-type ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a dehumidifier combining a refrigeration cycle and a heat exchanger, for example, a dehumidifier described in Patent Document 1 is known.

As shown in FIG. 9 , a conventional dehumidifier 1100 is configured such that after air (air X, air Y) sucked into a main body casing 1102 from an air inlet 1101 passes through a dehumidifier 1103, the air is blown out from an air outlet 1104. Blow out to the outside of the main body casing 1102 . The dehumidifier 1103 includes a refrigeration cycle and a heat exchanger 1111 . In the refrigeration cycle, a compressor 1105, a radiator 1106, an expander 1107, and a heat absorber 1108 are sequentially connected. The heat exchanger 1111 is disposed between the heat absorber 1108 and the radiator 1106 , and performs heat exchange between the air X flowing in the first flow path 1109 and the air Y flowing in the second flow path 1110 .

Then, the air X flowing through the first flow path 1109 is cooled by the heat absorber 1108 to generate dew condensation. The condensation water generated by the cooled air X is recovered. On the other hand, the air Y flowing through the second flow path 1110 exchanges heat with the air X cooled by the heat absorber 1108 to be cooled, and dew condensation occurs. Dew condensation water generated from the cooled air Y is also recovered. In this way, dehumidification of air is performed by the dehumidifier 1100 .

However, the conventional dehumidifier 1100 is configured to pass dehumidified air through the radiator 1106 in order to cool the radiator 1106 of the refrigeration cycle. In the radiator 1106, in addition to the energy absorbed by the heat absorber 1108, the energy for circulating the refrigerant in the refrigeration cycle by the compressor 1105 is also discharged. Therefore, the temperature of the dehumidified air that has passed through the radiator 1106 rises to be equal to or higher than the temperature of the air before dehumidification. As a result, when the dehumidification mechanism of the conventional dehumidification device 1100 is arranged in the air supply air path of the heat exchange type ventilator to perform dehumidification, the dehumidified air (air whose temperature has been raised) is generated as it is. The problem that the supply air is blown into the room and impairs the comfort of the room.

The present invention was made in order to solve the above-mentioned problems, and provides a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

In order to achieve this object, the heat exchange type ventilator with dehumidification function of the present invention includes: a heat exchange type ventilator that performs heat exchange between the exhaust air flow and the supply air flow, and the exhaust air flow is used for indoor The air exhausted to the outside flows through the exhaust air path, and the supply air flows through the supply air path for supplying outdoor air to the room; and the dehumidifier dehumidifies the supply air. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the supply air flow introduced into the dehumidifier passes through the heat absorber and the first flow path sequentially, and then is led out to the supply air flow path so as not to flow through the radiator. The other part of the supply air flow introduced into the dehumidifier flows through the second flow path, and then is led out to the supply air flow path so as not to flow through the radiator. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to the present invention, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

The heat exchange type ventilator with dehumidification function of the present invention includes: a heat exchange type ventilator that performs heat exchange between an exhaust flow and a supply air flow for discharging indoor air to the outside. The exhaust air path circulates, and the supply air flow circulates in the air supply air path for supplying outdoor air to the room; and the dehumidification device dehumidifies the supply air flow. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger, which is arranged between the heat absorber and the heat Heat exchange with the air flowing in the second channel. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the supply air flow introduced into the dehumidifier passes through the heat absorber and the first flow path sequentially, and then is led out to the supply air flow path so as not to flow through the radiator. The other part of the supply air flow introduced into the dehumidifier flows through the second flow path, and then is led out to the supply air flow path so as not to flow through the radiator. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path.

According to such a structure, the cooling (exhaust heat) of the radiator in the dehumidification device can be obtained by the exhaust flow from the heat exchange type ventilator (in summer when dehumidification is required, the exhaust flow is lower in temperature than the supply air flow). Therefore, the dehumidified air (supply air flow) can be blown into the room without flowing to the radiator. In other words, even when a dehumidifier combining a refrigeration cycle and a heat exchanger is applied, it can become a dehumidifier with a dehumidification function that can transport a supply air flow that suppresses a temperature rise accompanying dehumidification. Exchange type ventilator.

Alternatively, the dehumidifier may further include a water blowing unit that blows water to the radiator, and the exhaust air flow introduced into the dehumidifier may pass through the radiator in a state where water is blown by the water blowing unit, and then flow to the exhaust air. Wind path export.

By adopting such a structure, the energy required for cooling (exhausting heat) of the radiator in the dehumidifier can be obtained from the air heat of the exhaust flow from the heat exchange type ventilator and the heat of vaporization of the blown water, so The radiator can be effectively cooled, and the dehumidified air (supply air flow) can be blown into the room without passing through the radiator.

In addition, it may also be configured to further include: a liquid miniaturization device configured to introduce the heat-exchanged supply air from the air supply air path, and humidify the introduced supply air; and a water channel switching unit that can be switched from The first state of introducing water from the outside to the liquid miniaturization device and the second state of introducing water from the outside to the dehumidification device, the water channel switching unit switches to the first state during humidification, and switches to the second state during dehumidification.

By employing such a configuration, it is possible to easily switch the water from the outside introduced into the liquid miniaturization device for humidification into the dehumidifier by the water channel switching unit. In other words, when a dehumidifier is applied to a heat exchange type ventilator with a humidification function, the supply of water from the outside can be shared with the liquid miniaturization device, so that the dehumidifier can be realized at a low cost. The water blowing process performed by the water blowing unit to the radiator.

In addition, it may be configured to further include an air blower that takes in outdoor air, circulates the air through the radiator, and then leads the air to the heat-exchanged exhaust air path.

By adopting such a structure, it is possible to obtain the heat required for the cooling (exhaust heat) of the radiator in the dehumidifier by the air heat of the exhaust flow from the heat exchange type ventilator and the air heat of the air flow from the air supply device. Energy, so the radiator can be effectively cooled, and the dehumidified air (supply air flow) can be blown into the room without circulating to the radiator.

In addition, during dehumidification, the temperature of the supply air supplied from the dehumidifier to the room may be adjusted by controlling the ratio of the air volume of a part of the supply air to the air volume of another part of the supply air.

According to such a structure, the temperature of the other part of the supply air flow after flowing through the second flow path can be further lowered by the air flow cooled by the heat absorber (a part of the supply air flow after flowing through the first flow path), so it is possible to easily The temperature of the supply air supplied to the room is adjusted to the desired temperature.

Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and does not limit the technical scope of this invention. In addition, in all drawings, the same code|symbol is attached|subjected to the same part, and description is abbreviate|omitted. In addition, the description of each drawing will be omitted in order to avoid repetition of the details of each part that is not directly related to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(premise example)

First, a heat exchange type ventilator serving as a premise example of an embodiment of the present invention will be described with reference to FIGS. 18 and 19 . Fig. 18 is a schematic diagram showing an installation state of a heat exchange type ventilator in a house according to a precondition example of the present invention. Fig. 19 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

In FIG. 18 , a heat exchange type ventilator 210 is installed in a room of a house 201 . The heat exchange type ventilator 210 is a device that ventilates while exchanging heat between indoor air and outdoor air.

As shown in FIG. 18 , the exhaust flow 202 is discharged to the outdoors via the heat exchange type ventilator 210 as indicated by the black arrow. Exhaust flow 202 is the flow of air discharged from the room to the outside. In addition, the supply air flow 203 is taken into the room via the heat exchange type ventilator 210 as indicated by a white arrow. The supply air flow 203 is an air flow taken into the room from the outside. For example, taking winter in Japan as an example, the exhaust air flow 202 is 20° C. to 25° C., whereas the supply air flow 203 may be below freezing point. The heat exchange type ventilator 210 performs ventilation, and during the ventilation, transfers the heat of the exhaust flow 202 to the supply flow 203 , thereby suppressing unnecessary heat emission.

As shown in FIG. 19 , the heat exchange type ventilator 210 has a main body casing 211, a heat exchange element 212, an exhaust fan 213, an inner air port 214, an exhaust port 215, an air supply fan 216, an outer air port 217, and an air supply port 218. , exhaust air path 204, air supply air path 205. The main body case 211 is the outer frame of the heat exchange type ventilator 210 . An inner air port 214 , an exhaust port 215 , an outer air port 217 , and an air supply port 218 are formed on the outer periphery of the main body casing 211 . The inner air port 214 is a suction port for sucking the exhaust flow 202 into the heat exchange type ventilator 210 . The exhaust port 215 is a discharge port for discharging the exhaust flow 202 from the heat exchange type ventilator 210 to the outside. The external air port 217 is a suction port for sucking the supply air 203 into the heat exchange type ventilator 210 . The air supply port 218 is a discharge port for discharging the supply air flow 203 from the heat exchange type ventilator 210 into the room.

A heat exchange element 212 , an exhaust fan 213 , and an air supply fan 216 are installed inside the main body casing 211 . In addition, an exhaust air passage 204 and an air supply air passage 205 are formed inside the main body casing 211 . The heat exchange element 212 is a member for exchanging heat (sensible heat and latent heat) between the exhaust flow 202 flowing through the exhaust air passage 204 and the supply air flow 203 flowing through the supply air passage 205 . The exhaust fan 213 is a blower for sucking the exhaust flow 202 from the inner air port 214 and discharging it from the exhaust port 215 . The supply air fan 216 is a blower for sucking the supply air 203 from the external air port 217 and discharging it from the air supply port 218 . The exhaust air passage 204 is an air passage connecting the inner air port 214 and the exhaust port 215 . The air supply air path 205 is an air path connecting the external air port 217 and the air supply port 218 . The exhaust flow 202 drawn in by the exhaust fan 213 is exhausted to the outside through the exhaust port 215 via the heat exchange element 212 in the exhaust air passage 204 and the exhaust fan 213 . In addition, the air supply airflow 203 sucked by the air supply fan 216 is supplied into the room from the air supply port 218 via the heat exchange element 212 in the air supply air path 205 and the air supply fan 216 .

When the heat exchange type ventilator 210 performs heat exchange and ventilation, the exhaust fan 213 and the air supply fan 216 of the heat exchange element 212 are operated, so that in the heat exchange element 212, the Heat exchange is performed between the exhaust air flow 202 at 204 and the supply air flow 203 flowing through the supply air path 205 . Thus, when the heat exchange type ventilator 210 is ventilating, the heat of the exhaust air flow 202 discharged to the outside is transferred to the air supply air flow 203 taken into the room, thereby suppressing the discharge of unnecessary heat and releasing heat to the room. heat recovery. As a result, during ventilation in winter, it is possible to suppress a decrease in the temperature of the indoor air due to the low-temperature outdoor air. On the other hand, in summer, when ventilation is performed, it is possible to suppress the temperature of the indoor air from rising due to the outdoor air having a high temperature.

Embodiment 3 includes at least the following Embodiment 3-1, Embodiment 3-2, Embodiment 3-3, Embodiment 3-4, and Embodiment 3-5.

(Embodiment 3-1)

Next, a heat exchange type ventilator with a dehumidification function according to Embodiment 3-1 will be described with reference to FIG. 20 . Fig. 20 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-1 of the present invention. It should be noted that in each schematic diagram after FIG. 20, the exhaust air passage 204 and the air supply air passage 205 are also used as the flow of the exhaust air flow 202 and the air supply air flow 203 in the heat exchange type ventilator 210 (black arrows). ) to mark.

As shown in FIG. 20 , the heat exchange type ventilator 250 with a dehumidification function according to Embodiment 3-1 has a dehumidifier 230 as a mechanism for imparting a dehumidification function to the heat exchange type ventilator 210 of the preceding example. structure.

The dehumidifier 230 is a means for dehumidifying the heat-exchanged supply airflow 203 in the heat exchange type ventilator 210 . The dehumidifier 230 includes: a refrigeration cycle including a compressor 231 , a radiator 232 , an expander 233 , and a heat absorber 234 ; and a heat exchanger 235 . Moreover, the refrigeration cycle of this embodiment is comprised so that the compressor 231, the radiator 232, the expander 233, and the heat absorber 234 are sequentially connected in ring shape. In the refrigeration cycle, for example, alternative Freon (HFC134a) is used as a refrigerant. In addition, copper pipes are often used for connecting the various devices that constitute the refrigeration cycle, and they are connected by welding.

The compressor 231 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigeration cycle to increase the pressure and increase the temperature. In the present embodiment, the compressor 231 raises the temperature of the refrigerant gas to about 45°C.

The radiator 232 is a device for exchanging heat between the refrigerant gas that has become high-temperature and high-pressure by the compressor 231 and air (exhaust gas flow 202 ) to discharge heat to the outside (outside the refrigeration cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 232, since the temperature (about 45 degreeC) of the refrigerant gas introduced is higher than the temperature of air, when heat exchange is performed, the temperature of the air rises and the refrigerant gas is cooled. It should be noted that the radiator 232 is also called a condenser.

The expander 233 is a device that decompresses the high-pressure refrigerant liquefied by the radiator 232 to convert it into an original low-temperature and low-pressure liquid. It should be noted that the expander 233 is also called an expansion valve.

The heat absorber 234 is a device that absorbs heat from the air to evaporate the refrigerant that has passed through the expander 233 , and turns the liquid refrigerant into a low-temperature and low-pressure refrigerant gas. In the heat absorber 234, since the temperature of the refrigerant|coolant introduced is lower than the temperature of air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises. It should be noted that the heat absorber 234 is also called an evaporator.

The heat exchanger 235 is a heat exchanger including sensible heat type heat exchange elements. Heat exchanger 235 is arranged in the space between heat absorber 234 and radiator 232 similarly to heat exchanger 1111 (see FIG. 9 ) in conventional dehumidifier 1100 . Inside the heat exchanger 235 are provided a first flow path 236 through which air flows in a predetermined direction, and a second flow path 237 through which air flows in a direction substantially perpendicular to the first flow path 236 . The first flow path 236 is a flow path that leads the air introduced from the heat absorber 234 to the air supply air path 205 without circulating through the radiator 232 . The second flow path 237 is a flow path that leads the air introduced from the heat exchange type ventilator 210 to the air supply air path 205 without circulating through the radiator 232 . Furthermore, the heat exchanger 235 exchanges only sensible heat between the air flowing through the first flow path 236 and the air flowing through the second flow path 237 .

Next, the flow of the airflow (exhaust airflow 202, supply airflow 203) between the heat exchange type ventilator 210 and the dehumidifier 230 will be described with reference to FIG. 20 . It should be noted that, in the following description, the airflow (exhaust airflow 202, supply airflow 203) or air passage (exhaust air passage 204, air supply air passage 205) after heat exchange means that the air flow through the heat exchange type ventilator The airflow or air path behind the heat exchange element 212 in 210 and the airflow or air path before heat exchange represent the airflow or air path before passing through the heat exchange element 212 .

As shown in FIG. 20 , in the heat exchange type ventilator 210 , a switching damper 240 is provided in the exhaust air passage 204 after heat exchange, and a switching damper 241 is provided in the air supply air passage 205 after heat exchange. The switching damper 240 is for switching between the state where the exhaust air flow 202 flowing through the exhaust air passage 204 flows to the outside and the state where the exhaust air flow 202 flowing through the exhaust air passage 204 flows to the dehumidifier 230 . throttle. In addition, the switch damper 241 is for switching between the state where the supply air flow 203 flowing through the air supply air passage 205 flows into the room and the state where the supply air flow 203 flowing through the air supply air passage 205 flows toward the dehumidifier 230 . throttle.

In the heat exchange type ventilator 250 with a dehumidification function, each switching damper is used to make the airflow flow to the dehumidifier 230 , thereby dehumidifying the heat-exchanged supply airflow 203 . Details about dehumidification will be described later. It should be noted that, in winter when dehumidification is not required, the airflow does not flow to the dehumidifier 230 by using each switching damper, so that the increase in pressure loss caused by the dehumidifier 230 is suppressed, as a heat exchange with dehumidification function. The type ventilator 250 can realize the operation under energy-saving throughout the year.

In addition, as shown in FIG. 20 , the dehumidifier 230 is provided with a branch damper 242 that divides the heat-exchanged air supply flow 203 introduced into the interior into two airflows (the first supply airflow 203a, the second supply airflow 203b). The first supply airflow 203 a is an airflow introduced to the heat absorber 234 and circulated in the first flowpath 236 , and the second supply airflow 203 b is an airflow introduced into the heat exchanger 235 and circulated in the second flowpath 237 . The branch damper 242 is configured to vary the ratio of the air volume of the first supply air flow 203a to the air volume of the second supply air flow 203b. That is, the branch damper 242 can easily increase or decrease the ratio of the first supply airflow 203 a to the second supply airflow 203 b by adjusting the angle of the damper (the branching ratio of the heat-exchanged supply airflow 203 ). Here, the first supply airflow 203a corresponds to "a part of the supply airflow introduced into the dehumidifier" of the claim, and the second supply airflow 203b corresponds to "the other part of the supply airflow introduced into the dehumidifier" of the claim.

In the dehumidifier 230, the first supply airflow 203a of the divided supply airflow 203 flows through the heat absorber 234 and the first flow path 236 of the heat exchanger 235 in sequence, and then exchanges heat with the radiator 232 without passing through the heat sink 232. The air supply air path 205 after the heat exchange in the type ventilator 210 is led out. On the other hand, the second supply air flow 203 b flows through the second flow passage 237 of the heat exchanger 235 , and then is led out to the heat-exchanged supply air passage 205 without flowing through the radiator 232 . In the present embodiment, the dehumidifier 230 is configured such that the first supply airflow 203a after passing through the heat exchanger 235 and the second supply airflow 203b after passing through the heat exchanger 235 are merged, and then the heat-exchanged supply air The wind road 205 leads out. Thereby, temperature adjustment is performed as the supply air flow 203 sent into the room. A method for adjusting the temperature of the supply air flow 203 sent into the room will be described later.

On the other hand, the exhaust flow 202 introduced into the dehumidifier 230 passes through the radiator 232 and then is led out to the exhaust air passage 204 after heat exchange in the heat exchange type ventilator 210 . That is, in the present embodiment, the dehumidifier 230 is configured to cool the radiator 232 by the exhaust flow 202 introduced from the heat exchange type ventilator 210 .

Next, the dehumidification operation of the heat exchange type ventilator 250 with a dehumidification function according to Embodiment 3-1 will be described.

First, by operating the heat exchange type ventilator 250 with a dehumidification function, the exhaust fan 213 and the air supply fan 216 are driven, and the exhaust air flowing through the exhaust air passage 204 is generated inside the heat exchange type ventilator 210 . The air flow 202 and the air supply air flow 203 circulating in the air supply air path 205 .

For example, in summer, the exhaust air flow 202 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 203 is outdoor air with high temperature and humidity.

The exhaust flow 202 and the supply flow 203 exchange sensible heat and latent heat inside the heat exchange type ventilator 210 . At this time, moisture moves from the high-temperature and high-humidity supply airflow 203 to the exhaust airflow 202, so the moisture in the supply airflow 203 is removed. That is, dehumidification (first dehumidification) for the supply airflow 203 is performed by total heat exchange inside the heat exchange type ventilator 210 .

Next, the heat-exchanged supply airflow 203 is introduced into the dehumidifier 230 and dehumidified. Specifically, the first supply airflow 203 a of the supply airflow 203 introduced into the dehumidification device 230 is cooled by the heat absorber 234 . As a result, the temperature of the first air supply air flow 203a becomes lower than the dew point temperature, and the first air supply air flow 203a condenses dew, so the moisture in the first air supply air flow 203a is removed. That is, by passing through the heat absorber 234, dehumidification (second dehumidification) with respect to the 1st supply airflow 203a is performed.

In addition, the remaining second supply airflow 203b of the supply airflow 203 introduced into the dehumidification device 230 flows into the second flow path 237 of the heat exchanger 235, and is mixed with the first flow path 236 cooled by the heat absorber 234 in the first flow path 236. Air flow 203a is provided for heat exchange. As a result, the second supply airflow 203b in the second flow path 237 is cooled to condense dew, and thus the moisture in the second supply airflow 203b is removed. That is, by performing sensible heat exchange in the heat exchanger 235, dehumidification (third dehumidification) with respect to the 2nd supply airflow 203b is performed.

That is, the heat exchange type ventilator 250 with a dehumidification function performs dehumidification (first dehumidification to third dehumidification) by each device of the heat exchange type ventilator 210, the heat absorber 234, and the heat exchanger 235. Moisture is removed from the outdoor high-temperature and humid supply airflow 203, at this time, the required dehumidification capacity is ensured.

And, the dehumidifier 230 in the heat exchange type ventilator 250 with a dehumidification function is configured to introduce the exhaust air flow 202 from the exhaust air passage 204 of the heat exchange type ventilator 210 and make the introduced exhaust air flow 202 flow through the radiator. 232 in circulation. In the radiator 232 , heat equivalent to the energy absorbed in the heat absorber 234 and the energy used in the compressor 231 to circulate the refrigerant in the refrigeration cycle is discharged by the introduced exhaust flow 202 . The exhaust flow 202 that has absorbed heat from the radiator 232 is led out to the exhaust air passage 204 and directly discharged outdoors. That is, the radiator 232 is cooled by the incoming exhaust gas flow 202 . And, since the supply airflow 203 (the first supply airflow 203a, the second supply airflow 203b) is led out to the supply air passage 205 without passing through the radiator 232, the supply airflow 203 (the first supply airflow 203b) caused by the dehumidification process will not be generated. The temperature of the gas stream 203a mixed with the second feed gas stream 203b) increases.

Next, a method for adjusting the temperature of the supply air flow 203 in the heat exchange type ventilator 250 with a dehumidification function according to Embodiment 3-1 will be described.

As shown in FIG. 20 , in the heat exchange type ventilator 250 with dehumidification function, there are first temperature sensor 245, second temperature sensor 246 and control unit (not shown) associated with the control of the branch ratio of branch damper 242. Show). The first temperature sensor 245 detects the temperature of the exhaust flow 202 before heat exchange. The second temperature sensor 246 detects the temperature of the supply airflow 203 (the mixed airflow of the first supply airflow 203 a and the second supply airflow 203 b ) that flows through the heat exchanger 235 of the dehumidifier 230 and merges. The control unit controls the branch damper 242 .

The controller controls branch damper 242 so that the temperature detected by second temperature sensor 246 falls within a predetermined temperature range by adjusting the branch ratio of branch damper 242 based on the temperature detected by first temperature sensor 245 . Specifically, when the temperature at the second temperature sensor 246 is higher than the temperature at the first temperature sensor 245, the control unit increases the air volume of the first air supply air flow 203a relative to the air volume of the second air supply air flow 203b so that The temperature of the dehumidified feed gas stream 203 is lowered. On the other hand, when the temperature at the second temperature sensor 246 is lower than the temperature at the first temperature sensor 245, the control unit reduces the air volume of the first supply air flow 203a relative to the air volume of the second supply air flow 203b, thereby The temperature of the feed gas stream 203 is raised. Accordingly, in the heat exchange type ventilator 250 with a dehumidification function, it is possible to supply the supply air flow 203 having the same temperature as the first temperature sensor 245 (exhaust air flow 202 before heat exchange drawn from the room).

According to the heat exchange type ventilator 250 with dehumidification function of Embodiment 3-1, the exhaust gas flow 202 from the heat exchange type ventilator 210 (in the summer when dehumidification is required, the exhaust gas flow 202 is lower in temperature than the supply gas flow 203 The airflow 202) obtains the energy required for cooling (heat removal) of the radiator 232 in the dehumidifier 230, so that the dehumidified air (supply airflow) can be blown into the room without passing through the radiator. That is, even when the dehumidification device 230 combining the refrigeration cycle and the heat exchanger 235 is applied, it is possible to send the supply air flow in which the temperature rise caused by dehumidification is suppressed.

(Embodiment 3-2)

Heat exchange type ventilator 250a with a dehumidification function according to Embodiment 3-2 of the present invention differs from Embodiment 3-1 in that water blowing unit 238 blowing water to radiator 232 in dehumidification device 230a is configured. The structure of the heat exchange type ventilator 250a with a dehumidification function other than this is the same as that of the heat exchange type ventilator 250 with a dehumidification function in Embodiment 3-1. Hereinafter, re-description of the content described in Embodiment 3-1 will be appropriately omitted, and points different from Embodiment 3-1 will be mainly described.

A heat exchange type ventilator 250a with a dehumidification function according to Embodiment 3-2 of the present invention will be described with reference to FIG. 21 . Fig. 21 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-2 of the present invention.

As shown in Figure 21, the dehumidifier 230a in the heat exchange type ventilator 250a with dehumidification function is provided with: a water blowing part 238, which blows water to the radiator 232; The blowing unit 238 supplies water and discharges excess water generated when blowing to the radiator 232 .

In the dehumidifier 230a, the radiator 232 constituting the refrigeration cycle is disposed in the exhaust air passage 204 as a whole, and other equipment (compressor 231, expander 233, heat absorber 234, and heat exchanger 235) are disposed in the dehumidifier 230a. Exhaust air duct 204 outside.

The water blowing unit 238 has a water nozzle, and sprays water from the water nozzle to the radiator 232 in the form of a mist in the exhaust air passage 204 . The sprayed water adheres to the surface of the radiation pipes constituting the radiator 232 and is vaporized by the heat of the radiator 232 . Then, the vaporized water is led out to the exhaust air passage 204 through the exhaust flow 202 flowing through the radiator 232, and is discharged outdoors as it is.

One end of the water supply and drain pipe 239 is connected to the water blowing unit 238 via an opening and closing mechanism such as a solenoid valve, and the other end is connected to a water supply facility and a drainage facility of a residential facility. Further, the water supply and drain pipe 239 supplies water to the water blowing unit 238 and discharges excess water generated when blowing to the radiator 232 .

The exhaust flow 202 introduced into the dehumidifier 230a passes through the radiator 232 in a state where water is blown by the water blowing part 238, and then is led out to the exhaust air passage 204 after heat exchange in the heat exchange type ventilator 210. , and discharge directly to the outside. That is, in the present embodiment, the dehumidifier 230a is configured to cool the radiator 232 by the air heat of the exhaust flow 202 introduced from the heat exchange type ventilator 210 and the vaporization heat of the blown water.

According to the heat exchange type ventilator 250a with a dehumidification function according to Embodiment 3-2, the air heat of the exhaust flow 202 from the heat exchange type ventilator 210 and the vaporization heat of the water blown by the water blowing unit 238 can be passed. Energy required for cooling (heat removal) of the radiator 232 in the dehumidifier 230a is obtained. Therefore, the radiator 232 can be effectively cooled, and the dehumidified air (supply airflow 203 ) can be blown into the room without passing through the radiator 232 . That is, even when the dehumidifier 230a combining the refrigeration cycle and the heat exchanger 235 is applied, it is possible to send the supply air flow 203 in which the temperature rise accompanying dehumidification is suppressed.

(Embodiment 3-3)

The heat exchange type ventilator 250b with a dehumidification function according to Embodiment 3-3 of the present invention is different from Embodiment 3-2 in the following two points. The first point is that the liquid miniaturization device 260 for humidifying the heat-exchanged supply air flow 203 in the heat exchange type ventilator 210 is mounted. The second point is that the water channel switching unit 244 is configured to be switchable between a first state of supplying water from the outside to the liquid miniaturization device 260 and a second state of introducing water to the dehumidifier 230a from the outside. The structure of the heat exchange type ventilator 250b with a dehumidification function other than this is the same as that of the heat exchange type ventilator 250a with a dehumidification function in Embodiment 3-2. Hereinafter, re-description of the contents described in Embodiment 3-2 will be appropriately omitted, and points different from Embodiment 3-2 will be mainly described. It should be noted that the heat exchange type ventilator 250b with a dehumidification function according to Embodiment 3-3 of the present invention is equipped with a liquid miniaturization device 260, and has a humidification function in addition to the initial dehumidification function, so it can also be said to be a ventilation device with a dehumidification function. Heat exchange type ventilator with humidity control function or heat exchange type ventilator with dehumidification function.

A heat exchange type ventilator 250b with a dehumidification function according to Embodiment 3-3 of the present invention will be described with reference to FIG. 22 . Fig. 22 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-3 of the present invention.

As shown in FIG. 22 , a heat exchange type ventilator 250b with a dehumidification function is equipped with a liquid miniaturization device 260 for humidifying the supply air flow 203 after heat exchange in the heat exchange type ventilator 210 .

Furthermore, in the heat exchange type ventilator 210, the switch damper 243 is provided in the supply air path 205 after heat exchange. The switching damper 243 is used to switch between the state where the supply air flow 203 flowing through the air supply air passage 205 flows into the room and the state where the supply air flow 203 flowing through the air supply air passage 205 flows to the liquid miniaturization device 260 . throttle. In addition, it is comprised so that the air supply airflow 203 which flowed through the dehumidifier 230a is led out to the air supply air path 205 at the upstream side (heat exchange element 212 side) of the switching damper 243. FIG.

In the heat exchange type ventilator 250b with a dehumidification function, the switching damper 243 is used to make the airflow flow to the liquid miniaturization device 260 to humidify the heat-exchanged supply airflow 203 . The details of humidification will be described later. It should be noted that, in the summer when humidification is not required, the airflow does not flow to the liquid miniaturization device 260 by the switching damper 243, thereby suppressing the increase of pressure damage caused by the liquid miniaturization device 260, as a belt dehumidification device. Functional heat exchange type ventilator 250b, can realize the operation under energy-saving throughout the year.

In addition, the heat exchange type ventilator 250b with a dehumidification function is provided with a water channel switching unit 244 for switching to the first state of introducing water to the liquid miniaturization device 260 from the outside and to the dehumidification device 260 from the outside. Device 230a introduces a second state of water. The water channel switching unit 244 is configured to connect the liquid miniaturization device 260 to the water supply and drainage pipe 239 via the first water passage 244a in the first state, and connect the dehumidifier 230a to the water supply and drainage pipe 239 via the second water passage 224b in the second state. 239 connected. In addition, the water channel switching unit 244 switches to the first state when humidifying the heat-exchanged supply air 203 , and switches to the second state when dehumidifying the heat-exchanged supply air 203 .

Next, the liquid miniaturization device 260 will be described with reference to FIG. 23 . 23 is a schematic diagram showing the configuration of a liquid miniaturization device in the heat exchange type ventilator with dehumidification function according to Embodiment 3-3 of the present invention.

As shown in FIG. 23 , the liquid miniaturization device 260 includes an inlet 262 , an outlet 263 , an inner cylinder 264 , an outer cylinder 268 , and a water receiving portion 271 .

The suction port 262 is an opening for sucking air into the liquid miniaturization device 260 , and is provided on a side surface of the liquid miniaturization device 260 . In addition, the suction port 262 has a shape (for example, a cylindrical shape) to which a duct can be connected, and is connected to the heat-exchanged air supply air path 205 via the switching damper 243 (see FIG. 22 ).

The air outlet 263 is an opening for blowing out the air passing through the liquid miniaturization device 260 , and is provided on the upper surface of the liquid miniaturization device 260 . In addition, the outlet 263 is formed in a region partitioned by the inner cylinder 264 and the outer cylinder 268 (the region between the inner cylinder 264 and the outer cylinder 268 ). In addition, the outlet 263 is provided around the inner tube 264 on the upper surface of the liquid miniaturization device 260 . In addition, the air outlet 263 is provided at a position above the air inlet 262 . Moreover, the air outlet 263 has the shape which can connect the cylindrical duct, and is connected to the air supply air path 205 after heat exchange (refer FIG. 22).

Then, the air sucked in from the suction port 262 passes through the liquid miniaturization unit 277 described later to become humidified air, and is blown out from the blower port 263 .

The inner cylinder 264 is disposed near the center of the liquid miniaturization device 260 . In addition, the inner cylinder 264 has a vent 267 opened substantially vertically downward, and is formed in a hollow cylindrical shape.

The outer cylinder 268 is formed in a cylindrical shape, and is disposed so as to enclose the inner cylinder 264 . Moreover, the side wall 268a of the outer cylinder 268 is provided with the water supply port 272 for supplying water to the water storage part 270 mentioned later. Furthermore, the water supply port 272 is connected to the water supply and drainage pipe 239 via the first water passage 244a. In addition, the water supply port 272 is provided in the vertical direction upper position than the upper surface of the water storage part 270 (the surface of the maximum water level which can be stored in the water storage part 270: the water surface 280).

The water receiving portion 271 is provided over the entire bottom of the liquid miniaturization device 260 . For example, when an abnormality occurs in the device and water leaks, the water receiving part 271 can temporarily store the water leaked from the device.

Next, the internal structure of the liquid miniaturization device 260 will be described.

As shown in FIG. 23 , the liquid miniaturization device 260 has a suction communication air passage 265 , an inner cylinder air passage 266 , an outer cylinder air passage 269 , a water storage unit 270 , a liquid miniaturization unit 277 and a water receiving unit 271 .

The suction communication air passage 265 is a duct-shaped air passage connecting the suction port 262 and the inner cylinder 264 (inner cylinder air passage 266 ), and is configured so that the air sucked in from the suction port 262 reaches the inner cylinder through the suction communication air passage 265 . 264 inside.

The inner cylinder air passage 266 is an air passage provided on the inside of the inner cylinder 264, and is connected to the outer cylinder air passage 269 provided on the outer side of the inner cylinder 264 (by the opening (vent 267)) at the lower end of the inner cylinder 264. The wind path represented by the dotted line arrow in Fig. 23) communicates. In the inner tube air passage 266, a liquid miniaturization unit 277 is arranged in the air passage.

The outer cylinder air passage 269 is an air passage formed between the inner cylinder 264 and the outer cylinder 268 and communicates with the air outlet 263 .

The water storage unit 270 is provided at the lower portion of the liquid miniaturization device 260 (the lower portion of the inner tube 264 ), and stores water. The water storage part 270 is formed substantially in the shape of a mortar, and the side wall of the water storage part 270 is connected to the lower end of the outer cylinder 268 to be integrated. The general mortar shape specifically includes a circular bottom surface and an inverted conical side wall connected to the bottom surface. Furthermore, the water storage unit 270 is configured to supply water from a water supply port 272 provided on the side wall 268 a of the outer cylinder 268 and to discharge water from a water discharge port 273 provided on the bottom surface of the water storage unit 270 . Here, the drain port 273 is connected to the water supply and drain pipe 239 through another first water passage 244a similarly to the water supply port 272 . It should be noted that the drain port 273 is preferably disposed at the lowest position on the bottom surface of the water storage portion 270 .

The liquid miniaturization unit 277 is a main part of the liquid miniaturization device 260 and is a place where water is miniaturized. Specifically, the liquid miniaturization unit 277 has a pumping pipe (dipping pipe) 274 , a rotating plate 275 , and a motor 276 . In addition, the liquid miniaturization unit 277 is provided inside the inner cylinder 264 , that is, at a position covered by the inner cylinder 264 .

The pumping pipe 274 draws water from the water storage part 270 by rotating. In addition, the pumping pipe 274 is formed in the shape of a hollow truncated cone, and the tip on the side with a smaller diameter is located below the water surface 280 of the water stored in the water storage part 270 .

The rotary plate 275 is formed in a doughnut-shaped disc shape with an opening in the center, and is arranged around the side with a larger diameter of the water raising pipe 274 , in other words, the upper part of the water raising pipe 274 . A plurality of openings (not shown) are provided on the side surface of the larger diameter side of the water pumping pipe 274 , and the pumped water is supplied to the rotary plate 275 through the openings. And, the rotating plate 275 discharges the water sucked by the water pumping pipe 274 toward the direction of the rotating surface.

The motor 276 rotates the water pumping pipe 274 and the rotary plate 275 .

The water receiving part 271 is provided on the entire bottom surface of the liquid miniaturization device 260 below the water storage part 270 in the vertical direction.

Next, the operation of the liquid miniaturization device 260 will be described using FIG. 23 .

First, water is supplied from the water supply port 272 to the water storage unit 270 by the water supply and drainage pipe 239 connected to a water supply facility not shown, and the water is stored in the water storage unit 270 . Then, the air (supply air flow 203 after heat exchange) sucked into the liquid miniaturization device 260 from the suction port 262 sequentially passes through the suction communication air passage 265, the inner cylinder air passage 266, the liquid miniaturization unit 277, and the outer cylinder air passage. 269, and blow out from the outlet 263 toward the outside (for example, indoors). At this time, the water droplets generated by the liquid miniaturization unit 277 come into contact with the air passing through the inner cylinder air passage 266, and the air can be humidified by vaporizing the water droplets. In addition, the water stored in the water storage unit 270 is discharged from the water outlet 273 to the outside of the device after a predetermined time has elapsed.

The detailed operation will be described.

The air taken into the inner cylinder of the inner cylinder air passage 266 from the suction port 262 through the suction communication air passage 265 passes through the liquid miniaturization part 277 . When the water pumping pipe 274 and the rotary plate 275 are rotated by the operation of the motor 276 , the water stored in the water storage part 270 rises along the inner wall surface of the water pumping pipe 274 by the rotation. The raised water is pulled along the surface of the rotating plate 275 and discharged as fine water droplets from the outer peripheral end of the rotating plate 275 toward the direction of the rotating surface. The discharged water droplets collide with the inner wall surface of the inner cylinder 264 and are broken into finer water droplets. The water droplets discharged from the rotating plate 275 and the water droplets collided with the inner wall surface of the inner cylinder 264 and broken into pieces come into contact with the air passing through the inner cylinder 264, and the water droplets are vaporized to humidify the air. It should be noted that although some of the generated water droplets are not vaporized, since the liquid miniaturization part 277 is arranged so as to be covered by the inner cylinder 264, the unvaporized water droplets adhere to the inner surface of the inner cylinder 264 and flow to the water storage. Section 270 falls.

Then, the air (humidified air) containing water droplets is blown out from the vent 267 provided at the lower end of the inner tube 264 toward the water storage part 270 provided below. Then, it flows toward the outer cylinder air passage 269 formed between the inner cylinder 264 and the outer cylinder 268 . Here, since the air passing through the outer cylinder air passage 269 is conveyed upward in the vertical direction, the air flowing downward in the inner cylinder air passage 266 is in the opposite direction to the conveyance direction.

At this time, the water droplets blown out together with the air from the vent 267 cannot follow the flow of the air due to inertia, but adhere to the water surface 280 of the water storage part 270 or the inner wall surface of the outer cylinder 268 . As for this effect, the greater the weight of the water droplets, the greater the effect, that is, the larger the diameter of the water droplets that are difficult to vaporize, the greater the effect, so that large water droplets can be separated from the flowing air.

Then, the air flowing into the outer cylinder air passage 269 from the inner cylinder air passage 266 through the vent 267 flows upward through the outer cylinder air passage 269 . Then, it is blown out from the outlet 263 to the outside. At this time, a part of the water drops falls toward the water storage portion 270 due to gravity, or adheres to the outer wall of the inner cylinder 264 or the inner wall of the outer cylinder 268 . Then, the water droplets adhering to the outer wall of the inner cylinder 264 or the inner wall of the outer cylinder 268 fall toward the water storage portion 270 along the outer wall surface of the inner cylinder 264 or the inner wall surface of the outer cylinder 268 .

As described above, the liquid miniaturization device 260 can humidify the air (the supply air flow 203 after heat exchange) through the liquid miniaturization unit 277 .

According to the heat exchange type ventilator 250b with a dehumidification function according to Embodiment 3-3, the radiator 232 can be effectively cooled similarly to the heat exchange type ventilator 250a with a dehumidification function, and the dehumidified air (supplied The airflow 203) is blown into the room without passing through the radiator 232. In addition, in the heat exchange type ventilator 250b with a dehumidification function, water from the outside introduced into the liquid miniaturization device 260 for humidification can be easily switched to the dehumidifier 230a by the water channel switching unit 244 . That is, when the dehumidifier 230a is applied to a heat exchange type ventilator with a humidification function, the supply of water from the outside can be shared with the liquid miniaturization device 260, so that the dehumidifier 230a can be realized at low cost. The blowing process of water to the radiator 232 is performed by the water blowing unit 238 .

(Embodiment 3-4)

The heat exchange type ventilator 250d with a dehumidification function according to Embodiment 3-4 of the present invention is configured with an air blower that circulates the supply air flow 203 (supply air flow 203 before heat exchange) to the radiator 232 in the dehumidification device 230. 290 differs from Embodiment 3-1 in this point. The structure of the heat exchange type ventilator 250c with a dehumidification function other than this is the same as that of the heat exchange type ventilator 250 with a dehumidification function in Embodiment 3-1. Hereinafter, re-description of the content described in Embodiment 3-1 will be appropriately omitted, and points different from Embodiment 3-1 will be mainly described.

A heat exchange type ventilator 250c with a dehumidification function according to Embodiment 3-4 of the present invention will be described with reference to FIG. 24 . Fig. 24 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-4 of the present invention.

As shown in FIG. 24 , a heat exchange type ventilator 250 c with a dehumidification function is equipped with an air blower 290 that circulates the supply air 203 (the supply air 3 before heat exchange) to the radiator 232 of the dehumidifier 230 .

The air supply device 290 is a blower used to transfer a part of the supply air flow 203 branched by the switching damper 247 (the third supply air flow 203 c ) from the air supply air path 205 before the heat exchange of the heat exchange type ventilation device 210 . After sucking it in and passing it through the radiator 232 of the dehumidifier 230, it is led out to the supply air duct 205 before heat exchange.

The switching damper 247 is used to control the state where the entire amount of the supply air flow 203 flowing through the air supply air passage 205 flows toward the heat exchange type ventilator 210 side, and the state where a part of the supply air flow 203 flowing through the air supply air passage 205 flows. A damper for switching the state of the flow to the air blower 290 side.

In this embodiment, the dehumidifier 230 is configured to cool the radiator by the air heat of the exhaust air flow 202 introduced from the heat exchange type ventilator 210 and the air heat of the third supply air flow 203 c introduced from the air blower 290 . 232.

According to the heat exchange type ventilator 250c with a dehumidification function according to Embodiment 3-4, the heat of the air from the exhaust flow 202 of the heat exchange type ventilator 210 and the third supply air flow 203c introduced from the air blower 290 can be passed. The heat of the air in the dehumidifier 230 obtains the energy required for the cooling (exhaust heat) of the radiator 232, so the radiator 232 can be effectively cooled, and the dehumidified air (supply airflow 3) can not be sent to the radiator 232 The way of circulation blows out to the room. That is, even when the dehumidifier 230 combining the refrigeration cycle and the heat exchanger 235 is applied, it is possible to send the supply air flow 203 in which the temperature rise accompanying dehumidification is suppressed.

(Embodiment 3-5)

The heat exchange type ventilator 250d with a dehumidification function according to Embodiment 3-5 of the present invention is configured with an air blower 290a that circulates the outdoor air (blow air flow 206 ) to the radiator 232 in the dehumidifier 230 It is different from Embodiment 3-1 above. The structure of the heat exchange type ventilator 250d with a dehumidification function other than this is the same as that of the heat exchange type ventilator 250 with a dehumidification function in Embodiment 3-1. Hereinafter, re-description of the content described in Embodiment 3-1 will be appropriately omitted, and points different from Embodiment 3-1 will be mainly described.

A heat exchange type ventilator 250d with a dehumidification function according to Embodiment 3-5 of the present invention will be described with reference to FIG. 25 . Fig. 25 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 3-5 of the present invention.

As shown in FIG. 25 , a heat exchange type ventilator 250 d with a dehumidification function is equipped with an air blower 290 a that circulates outdoor air (blow air flow 206 ) to the radiator 232 of the dehumidifier 230 .

The blower 290a is a blower used to suck the outdoor air (supply airflow 206) from an external air port (not shown) provided separately from the heat exchange type ventilator 210 and make it flow in the dehumidifier 230. After the radiator 232 circulates, it is led out to the exhaust air duct 204 after heat exchange.

In this embodiment, the dehumidifier 230 is configured to cool the radiator 232 by the air heat of the exhaust flow 202 introduced from the heat exchange type ventilator 210 and the air heat of the blown air flow 206 introduced from the air blower 290a. . It should be noted that the air blower 290a sucks in outdoor air (blow air flow 206 ) from an external air port (not shown) provided separately from the heat exchange type ventilator 210 , so it is different from the air blower in Embodiment 3-4. 290 , the air volume control of the blown airflow 206 can be performed independently of the heat exchange type ventilator 210 .

According to the heat exchange type ventilator 250d with a dehumidification function according to Embodiment 3-5, the heat of the air from the exhaust flow 202 of the heat exchange type ventilator 210 and the heat of the blown air flow 206 introduced from the blower device 290a can be passed. The air heat obtains the energy required for the cooling (exhaust heat) of the radiator 232 in the dehumidifier 230, so the radiator 232 can be effectively cooled, and the dehumidified air (supply air flow 203) can be prevented from circulating to the radiator 232. The way to blow into the room. That is, even when the dehumidifier 230 combining the refrigeration cycle and the heat exchanger 235 is applied, it is possible to send the supply air flow 203 in which the temperature rise accompanying dehumidification is suppressed.

As mentioned above, although this invention was demonstrated based on embodiment, it is easy to guess that this invention is not limited to the said embodiment at all, and various improvement and deformation|transformation are possible in the range which does not deviate from the summary of this invention. For example, the numerical values listed in the above-mentioned embodiments are examples, and other numerical values can of course be adopted.

In addition, in the heat exchange type ventilators 250, 250a to 250d with a dehumidification function according to Embodiments 3-1 to 3-5, a sensible heat type heat exchange element is used as the heat exchanger 235, but as the sensible heat For the type heat exchange element, the members constituting the first flow path 236 and the second flow path 237 of the heat exchange element are preferably waterproof (hydrophobic). As a member having water repellency (water repellency), resin members such as polypropylene and polystyrene are used, for example. In this way, the dew condensation water generated inside the heat exchange element easily flows out of the heat exchange element, so dehumidification can be performed without reducing the heat exchange efficiency of the heat exchanger 235 due to the dew condensation water.

In addition, in the heat exchange type ventilator 250b with a dehumidification function according to Embodiment 3-4, the dehumidification device 230a has a refrigeration cycle capable of performing only a dehumidification process, but the present invention is not limited thereto. For example, a four-way valve (reversible valve) can also be used to switch the structure of the refrigeration cycle of the dehumidification device to reverse the functions of the radiator (condenser) and heat absorber (evaporator). With this configuration, the dehumidifier can be switched between a cooling mode capable of dehumidifying air introduced into the device, and a heating mode capable of heating air introduced into the device. That is, during humidification in winter, the temperature of the air (supply airflow 3 after heat exchange) introduced into the liquid miniaturization device 260 can be raised by passing through the dehumidifier in the heating mode. Therefore, the amount of humidification for the heat-exchanged supply airflow 3 can be increased. In addition, under the conditions of dry winter (no need for dehumidification), warm air can be blown into the room, so the load of heating (air conditioning, floor heating) can be reduced.

(Embodiment 4)

Conventionally, a heat exchange type ventilator that performs heat exchange between a supply airflow and an exhaust airflow during ventilation is known as an apparatus that can ventilate without impairing the effect of cooling or heating.

In recent years, due to the influence of global warming and the improvement of the airtightness of houses, especially in summer, the indoor heat and humidity are not exhausted, and the indoor becomes hot and humid, so there is a possibility that the indoor comfort of the occupants is impaired. concerns. In order to improve indoor comfort in summer, it is particularly important to reduce indoor humidity, so heat exchange ventilation devices with a dehumidification function that perform heat exchange and ventilation while adjusting indoor humidity have been sought. Therefore, as a heat-exchange-type ventilator with a dehumidification function, we have developed a heat-exchange-type ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a dehumidifier combining a refrigeration cycle and a heat exchanger, for example, a dehumidifier described in Patent Document 1 is known.

As shown in FIG. 9 , a conventional dehumidifier 1100 is configured such that after air (air X, air Y) sucked into a main body casing 1102 from an air inlet 1101 passes through a dehumidifier 1103, the air is blown out from an air outlet 1104. Blow out to the outside of the main body casing 1102 . The dehumidifier 1103 includes a refrigeration cycle and a heat exchanger 1111 . In the refrigeration cycle, a compressor 1105, a radiator 1106, an expander 1107, and a heat absorber 1108 are sequentially connected. The heat exchanger 1111 is disposed between the heat absorber 1108 and the radiator 1106 , and performs heat exchange between the air X flowing in the first flow path 1109 and the air Y flowing in the second flow path 1110 .

Then, the air X flowing through the first flow path 1109 is cooled by the heat absorber 1108 to generate dew condensation. The condensation water generated by the cooled air X is recovered. On the other hand, the air Y flowing through the second flow path 1110 exchanges heat with the air X cooled by the heat absorber 1108 to be cooled, and dew condensation occurs. Dew condensation water generated from the cooled air Y is also recovered. In this way, dehumidification of air is performed by the dehumidifier 1100 .

However, the conventional dehumidifier 1100 is configured to pass dehumidified air through the radiator 1106 in order to cool the radiator 1106 of the refrigeration cycle. In the radiator 1106, in addition to the energy absorbed by the heat absorber 1108, the energy used to circulate the refrigerant in the refrigeration cycle through the compressor 1105 is also discharged, so the temperature of the dehumidified air passing through the radiator 1106 Rise above the temperature of the air before dehumidification. As a result, when the dehumidification mechanism of the conventional dehumidification device 1100 is arranged in the air supply air path of the heat exchange type ventilator to perform dehumidification, the dehumidified air (air whose temperature has been raised) is generated as it is. The problem that the supply air is blown into the room and impairs the comfort of the room.

The present invention was made in order to solve the above-mentioned problems, and provides a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

In order to achieve this object, the heat exchange type ventilator with dehumidification function of the present invention includes: a heat exchange type ventilator that performs heat exchange between the exhaust air flow and the supply air flow, and the exhaust air flow is used for indoor The air exhausted to the outside flows through the exhaust air path, and the supply air flows through the supply air path for supplying outdoor air to the room; and the dehumidifier dehumidifies the supply air. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; heat exchange between the air flowing in the second flow path; and a water introduction part that introduces at least water condensed in the heat absorber to the radiator. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the supply air flow introduced into the dehumidification device flows through the heat absorber and the first flow path sequentially, and is led out to the supply air flow path. The other part of the supply air introduced into the dehumidifier flows through the second flow path and is led out to the supply air path. The radiator is cooled by water introduced from the water introduction part. The exhaust flow introduced into the dehumidifier flows through the radiator cooled by the water introduced from the introduction part, and is led out to the exhaust air passage.

According to the present invention, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

The heat exchange type ventilator with dehumidification function of the present invention includes: a heat exchange type ventilator that performs heat exchange between an exhaust flow and a supply air flow for discharging indoor air to the outside. The exhaust air path circulates, and the supply air flow circulates in the air supply air path for supplying outdoor air to the room; and the dehumidification device dehumidifies the supply air flow. The dehumidification device includes: a refrigeration cycle, which is composed of a compressor, a radiator, an expander, and a heat absorber; heat exchange between the air flowing in the second flow path; and a water introduction part that introduces at least water condensed in the heat absorber to the radiator. The dehumidifier is configured so that the heat-exchanged supply air is introduced from the air supply air passage, and the exhaust air is introduced from the exhaust air passage. A part of the supply air flow introduced into the dehumidification device flows through the heat absorber and the first flow path sequentially, and is led out to the supply air flow path. The other part of the supply air introduced into the dehumidifier flows through the second flow path and is led out to the supply air path. The radiator is cooled by water introduced from the water introduction part. The exhaust flow introduced into the dehumidifier flows through the radiator cooled by the water introduced from the introduction part, and is led out to the exhaust air passage.

According to such a structure, the sensible heat or heat of vaporization of the water introduced from the water introduction part to the radiator and the exhaust flow from the heat exchange type ventilator (in summer when dehumidification is required, the temperature is lower than that of the supply airflow). The heat of the air in the exhaust air flow) obtains the energy required for cooling (exhausting heat) of the radiator in the dehumidifier, so the radiator can be effectively cooled, and the temperature rise of the dehumidified air (supply air flow) can be suppressed. As a result, even when a dehumidifier combining a refrigeration cycle and a heat exchanger is used, it is possible to send a supply air flow in which a temperature rise caused by dehumidification is suppressed. In other words, it is possible to provide a heat exchange type ventilator with a dehumidification function capable of sending a supply air flow in which a temperature rise accompanying dehumidification is suppressed.

In addition, in the heat exchange type ventilator with dehumidification function of the present invention, the radiator has: a first area, which is arranged in the exhaust air passage and allows exhaust flow to flow; and a second area, which is connected to the first area. The area connection is arranged in the air supply air path and allows the supply air to circulate. Then, the air supply air dehumidified in the dehumidifier flows through the second region of the radiator cooled by the water introduced from the water introduction part, and is led out to the air supply air passage. The exhaust flow introduced into the dehumidifier flows through the first area cooled by the water introduced from the water introduction part via the second area, and is led out to the exhaust air passage.

According to such a configuration, the water introduced from the water introduction part directly cools the second region of the radiator through which the dehumidified air (supply air flow) flows, so that the temperature rise of the supply air flow can be reliably suppressed.

In addition, in the heat exchange type ventilator with dehumidification function of the invention, the radiator is arranged in the exhaust air passage and supplies the exhaust flow. In addition, the air supply air flow led from the dehumidifier to the air supply air path is led to the air supply air path so as not to flow through the radiator. The exhaust flow introduced into the dehumidifier flows through the radiator cooled by the water introduced from the water introduction part, and is led out to the exhaust air passage.

According to such a configuration, since the dehumidified air (supply air flow) is blown into the room without passing through the radiator, the temperature rise accompanying the dehumidification can be reliably suppressed.

In addition, in the heat exchange type ventilator with a dehumidification function according to the present invention, the water introduction part is configured to collect the water condensed in the heat absorber and the water condensed in the heat exchange part, and introduce them to the radiator.

According to such a structure, since the quantity of the water introduced into a radiator can be further increased, a radiator can be cooled stably.

In addition, in the heat exchange type ventilator with dehumidification function of the present invention, the temperature of the supply air supplied from the dehumidifier to the room is adjusted by controlling the ratio of the air volume of a part of the supply air to the air volume of the other part of the supply air.

According to such a structure, the temperature of the other part of the supply air flow after flowing through the second flow path can be further lowered by the air flow cooled by the heat absorber (a part of the supply air flow after flowing through the first flow path), so it is possible to easily The temperature of the supply air supplied to the room is adjusted to the desired temperature.

Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and does not limit the technical scope of this invention. In addition, in all drawings, the same code|symbol is attached|subjected to the same part, and description is abbreviate|omitted. In addition, the description of each drawing will be omitted in order to avoid repetition of the details of each part that is not directly related to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(premise example)

First, a heat exchange type ventilator serving as a premise example of an embodiment of the present invention will be described with reference to FIGS. 26 and 27 . Fig. 26 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house. Fig. 27 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

In FIG. 26 , a heat exchange type ventilator 310 is installed in a room of a house 301 . The heat exchange type ventilator 310 is a device that ventilates while exchanging heat between indoor air and outdoor air.

As shown in FIG. 26 , the exhaust flow 302 is discharged to the outside through the heat exchange type ventilator 310 as indicated by the black arrow. Exhaust flow 302 is the flow of air discharged from the room to the outside. In addition, the supply air flow 303 is taken into the room via the heat exchange type ventilator 310 as indicated by a white arrow. The supply air flow 303 is the air flow taken in from the outside into the room. For example, taking winter in Japan as an example, the exhaust air flow 302 is 20° C. to 25° C., whereas the supply air flow 303 may be below the freezing point. The heat exchange type ventilator 310 performs ventilation, and during the ventilation, transfers the heat of the exhaust flow 302 to the supply flow 303 to suppress unnecessary heat emission.

As shown in Figure 27, the heat exchange type ventilator 310 has a main body shell 311, a heat exchange element 312, an exhaust fan 313, an inner air port 314, an exhaust port 315, an air supply fan 316, an outer air port 317, and an air supply port 318. , exhaust air path 304, air supply air path 305. The main body casing 311 is the outer frame of the heat exchange type ventilator 310 . An inner air port 314 , an exhaust port 315 , an outer air port 317 , and an air supply port 318 are formed on the outer periphery of the main body casing 311 . The inner air port 314 is a suction port for sucking the exhaust flow 302 into the heat exchange type ventilator 310 . The exhaust port 315 is a discharge port for discharging the exhaust flow 302 from the heat exchange type ventilator 310 to the outside. The external air port 317 is a suction port for sucking the supply air 303 into the heat exchange type ventilator 310 . The air supply port 318 is a discharge port for discharging the supply air flow 303 from the heat exchange type ventilator 310 into the room.

A heat exchange element 312 , an exhaust fan 313 , and an air supply fan 316 are installed inside the main body casing 311 . In addition, an exhaust air passage 304 and an air supply air passage 305 are formed inside the main body casing 311 . The heat exchange element 312 is a member for exchanging heat (sensible heat and latent heat) between the exhaust air flow 302 flowing through the exhaust air passage 304 and the supply air flow 303 flowing through the supply air passage 305 . The exhaust fan 313 is provided near the exhaust port 315 , and is a blower for sucking the exhaust flow 302 from the inner air port 314 and discharging it from the exhaust port 315 . The air supply fan 316 is provided near the air supply port 318 and is a blower for sucking the supply airflow 303 from the external air port 317 and discharging it from the air supply port 318 . The exhaust air passage 304 is an air passage connecting the inner air port 314 and the exhaust port 315 . The air supply air path 305 is an air path connecting the external air port 317 and the air supply port 318 . The exhaust flow 302 sucked in by the exhaust fan 313 is discharged to the outside through the exhaust port 315 via the heat exchange element 312 in the exhaust air passage 304 and the exhaust fan 313 . In addition, the air supply airflow 303 sucked by the air supply fan 316 is supplied into the room from the air supply port 318 via the heat exchange element 312 in the air supply air path 305 and the air supply fan 316 .

When the heat exchange type ventilator 310 performs heat exchange and ventilation, the exhaust fan 313 and the air supply fan 316 of the heat exchange element 312 are operated, so that in the heat exchange element 312, the Heat exchange is performed between the exhaust air flow 302 at 304 and the air supply air flow 303 flowing through the air supply air path 305 . Thus, when the heat exchange type ventilator 310 performs ventilation, the heat of the exhaust air flow 302 discharged to the outside is transferred to the air supply air flow 303 taken into the room, thereby suppressing the discharge of unnecessary heat and allowing the heat to be released indoors. heat recovery. As a result, in winter, when ventilation is performed, it is possible to suppress a decrease in the indoor temperature due to the low-temperature outdoor air. On the other hand, in summer, when ventilation is performed, it is possible to suppress an increase in indoor temperature due to outdoor air having a high temperature.

Embodiment 4 includes at least the following Embodiments 4-1 and 4-2.

(Embodiment 4-1)

Next, a heat exchange type ventilator with a dehumidification function according to Embodiment 4-1 will be described with reference to FIG. 28 . Fig. 28 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 4-1 of the present invention. It should be noted that in each schematic diagram after FIG. 28 , the exhaust air passage 304 and the air supply air passage 305 are also used as the flow of the exhaust air flow 302 and the air supply air flow 303 in the heat exchange type ventilator 310 (black arrows). ) to mark.

As shown in FIG. 28, the heat-exchange-type ventilator 350 with a dehumidification function according to Embodiment 4-1 has a dehumidifier 330 as a mechanism for imparting a dehumidification function to the heat-exchange-type ventilator 310 of the preceding example. structure.

The dehumidifier 330 is a means for dehumidifying the heat-exchanged supply airflow 303 in the heat exchange type ventilator 310 . The dehumidifier 330 includes: a refrigeration cycle including a compressor 331 , a radiator 332 , an expander 333 , and a heat absorber 334 ; a heat exchanger 335 ; and a water introduction unit 338 . In addition, the refrigeration cycle of the present embodiment is configured by sequentially linking the compressor 331 , the radiator 332 , the expander 333 , and the heat absorber 334 in a ring shape. In the refrigeration cycle, for example, alternative Freon (HFC134a) is used as a refrigerant. In addition, copper pipes are often used for connecting the various devices that constitute the refrigeration cycle, and they are connected by welding.

The compressor 331 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigeration cycle to increase the pressure and increase the temperature. In the present embodiment, the compressor 331 raises the temperature of the refrigerant gas to about 45°C.

The radiator 332 is a device for exchanging heat between the high-temperature, high-pressure refrigerant gas and air (exhaust gas flow 302 ) by the compressor 331 to discharge heat to the outside (outside the refrigeration cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 332, since the temperature (about 45 degreeC) of the refrigerant gas introduced is higher than the temperature of air, when heat exchange is performed, the temperature of the air rises and the refrigerant gas is cooled. It should be noted that the radiator 32 is also called a condenser.

In addition, the radiator 332 is extended and arranged below the water introduction part 338 mentioned later. In addition, the radiator 332 is divided into a first area 332a and a second area 332b. The first area 332a is arranged in the exhaust air passage 304 and supplies the exhaust flow 302 to flow. The second area 332b is arranged in the air supply air passage. 305 and for supply airflow 303 to circulate. The first region 332a and the second region 332b are divided so that the air (exhaust flow 302, supply flow 303) flowing into the respective regions does not mix, but are configured to be thermally connected. That is, when the first region 332a is cooled, the second region 332b is also cooled in a chain, and on the other hand, when the second region 332b is cooled, the first region 332a is also cooled in a chain.

The expander 333 is a device that decompresses the high-pressure refrigerant liquefied by the radiator 332 to convert it into an original low-temperature and low-pressure liquid. It should be noted that the expander 333 is also called an expansion valve.

The heat absorber 334 is a device that absorbs heat from the air to evaporate the refrigerant that has passed through the expander 333 , and turns the liquid refrigerant into a low-temperature, low-pressure refrigerant gas. In the heat absorber 334, since the temperature of the refrigerant|coolant introduced into the heat absorber 334 is lower than the temperature of air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises. It should be noted that the heat absorber 334 is also called an evaporator.

The heat exchanger 335 is a heat exchanger including a sensible heat type heat exchange element. Heat exchanger 335 is arranged in the space between heat absorber 334 and radiator 332 similarly to heat exchanger 1111 (see FIG. 9 ) in conventional dehumidifier 1100 . Inside the heat exchanger 335 are provided a first flow path 336 through which air flows in a predetermined direction, and a second flow path 337 through which air flows in a direction substantially perpendicular to the first flow path 336 . The first flow path 336 is a flow path that leads the air introduced from the heat absorber 334 to the radiator 332 . The second flow path 337 is a flow path that leads the air introduced from the heat exchange type ventilator 310 to the radiator 332 . Furthermore, the heat exchanger 335 exchanges only sensible heat between the air flowing through the first flow path 336 and the air flowing through the second flow path 337 .

The water introduction part 338 is a device for collecting water (condensation water) generated by dew condensation in the dehumidification process in a funnel-shaped water collection part and introducing the water to the radiator 332 . Specifically, the water introduction part 338 is provided below the heat absorber 334 and the heat exchanger 335, and the water condensed in the heat absorber 334 (dew condensation water 334a) and the water condensed in the heat exchanger 335 ( The dew condensation water 335a) is collected, and the water is introduced to the radiator 332 . Water is introduced into the radiator 332 by, for example, falling naturally from the water introduction part 338 . The water introduced into the radiator 332 (dew condensation water 334 a , dew condensation water 335 a ) adheres to the surface of heat radiation pipes constituting the radiator 332 , and rises in temperature or vaporizes due to the heat of the radiator 332 . Here, the temperature-raised water flows down the radiator 332 and is discharged from the drain pipe 339 connected to the drain of the residential facility. On the other hand, the vaporized water is led out to the air supply air passage 305 by the air supply air flow 303 flowing through the radiator 332, and discharged into the room. It should be noted that although the vaporized water is a very small part, the humidity of the supply air flow 303 led out to the supply air duct 305 is increased by the vaporized water. Therefore, in the present embodiment, the humidity of the air supply air flow 303 led out to the air supply air passage 305 is controlled by reflecting the amount of humidity raised by the vaporized water.

Next, the flow of the airflow (exhaust airflow 302, supply airflow 303) between the heat exchange type ventilator 310 and the dehumidifier 330 will be described with reference to FIG. 28 . It should be noted that, in the following description, the airflow (exhaust airflow 302, supply airflow 303) or the air path (exhaust air path 304, air supply air path 305) after heat exchange means that the air flow through the heat exchange type ventilator The airflow or air path after the heat exchange element 312 in 310 and the airflow or air path before heat exchange represent the airflow or air path before passing through the heat exchange element 312 .

As shown in FIG. 28 , in the heat exchange type ventilator 310 , a switching damper 340 is provided in the exhaust air passage 304 after heat exchange, and a switching damper 341 is provided in the air supply air passage 305 after heat exchange. The switching damper 340 is used to switch between the state where the exhaust air flow 302 flowing through the exhaust air passage 304 flows to the outside and the state where the exhaust air flow 302 flowing through the exhaust air passage 304 flows to the dehumidifier 330 . throttle. In addition, the switching damper 341 is for switching between the state where the air supply air 303 flowing through the air supply air passage 305 flows into the room and the state in which the air supply air 303 flowing through the air supply air passage 305 flows to the dehumidifier 330 . throttle.

In the heat exchange type ventilator 350 with a dehumidification function, each switching damper is used to make the airflow flow to the dehumidifier 330 , thereby dehumidifying the heat-exchanged supply airflow 303 . Details about dehumidification will be described later. It should be noted that, in winter when dehumidification is not required, the airflow does not flow to the dehumidifier 330 by using each switching damper, so that the increase in pressure loss caused by the dehumidifier 330 is suppressed. The type ventilator 350 can realize energy-saving operation throughout the year.

In addition, as shown in FIG. 28 , the dehumidifier 330 is provided with a branch damper 342 that divides the heat-exchanged air supply flow 303 introduced into the inside into two airflows (the first supply airflow 303a, the second supply airflow 303a, and the second airflow). 303b). The first supply airflow 303 a is an airflow introduced to the heat absorber 334 and circulated in the first flowpath 336 , and the second supply airflow 303 b is an airflow introduced into the heat exchanger 335 and circulated in the second flowpath 337 . The branch damper 342 is configured to vary the ratio of the air volume of the first supply air flow 303a to the air volume of the second supply air flow 303b. That is, the branch damper 342 can easily increase or decrease the ratio of the first supply airflow 303 a to the second supply airflow 303 b by adjusting the angle of the damper (the branching ratio of the heat-exchanged supply airflow 303 ). Here, the first supply airflow 303a corresponds to "a part of the supply airflow introduced into the dehumidifier" of the claim, and the second supply airflow 303b corresponds to "the other part of the supply airflow introduced into the dehumidifier" of the claim.

In the dehumidification device 330, the first supply airflow 303a in the divided supply airflow 303 flows through the heat absorber 334, the first flow path 336 of the heat exchanger 335, and the radiator 332 in sequence, and then flows to the heat exchange type ventilation device. The air supply air path 305 after the heat exchange in 310 is led out. On the other hand, the second supply air flow 303b flows through the second flow channel 337 of the heat exchanger 335 and the radiator 332 in sequence, and then is led out to the heat-exchanged supply air channel 305 . In this embodiment, the dehumidifier 330 is configured such that the first supply airflow 303a after passing through the heat exchanger 335 and the second supply airflow 303b after passing through the heat exchanger 335 are merged, and then the heat-exchanged supply air Wind road 305 leads out. Thereby, temperature adjustment is performed as the supply air flow 303 sent into the room. A method for adjusting the temperature of the supply air flow 303 sent into the room will be described later.

On the other hand, the exhaust flow 302 introduced into the dehumidifier 330 passes through the radiator 332 and then is led out to the exhaust air passage 304 after heat exchange in the heat exchange type ventilator 310 . That is, in this embodiment, the dehumidifier 330 is configured to cool the radiator 332 by the exhaust flow 2 introduced from the heat exchange type ventilator 310 .

Next, the dehumidification operation of the heat exchange type ventilator 350 with a dehumidification function according to Embodiment 4-1 will be described.

First, by operating the heat exchange type ventilator 350 with a dehumidification function, the exhaust fan 313 and the air supply fan 316 are driven, and the exhaust air flowing through the exhaust air passage 304 is generated inside the heat exchange type ventilator 310 . The air flow 302 and the air supply air flow 303 circulating in the air supply air path 305 .

For example, in summer, the exhaust air flow 302 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 303 is outdoor air with high temperature and humidity.

The exhaust flow 302 and the supply flow 303 exchange sensible heat and latent heat inside the heat exchange type ventilator 310 . At this time, moisture moves from the high-temperature and high-humidity supply airflow 303 to the exhaust airflow 302, so the moisture in the supply airflow 303 is removed. That is, dehumidification (first dehumidification) for the supply airflow 303 is performed by total heat exchange inside the heat exchange type ventilator 310 .

Next, the heat-exchanged air supply air 303 is introduced into the dehumidifier 330 and dehumidified. Specifically, the first supply airflow 303 a of the supply airflow 303 introduced into the dehumidification device 330 is cooled by the heat absorber 334 . Thereby, the temperature of the 1st supply airflow 303a becomes below dew point temperature, and since the 1st supply airflow 303a condenses, the moisture of the 1st supply airflow 303a is removed. That is, by passing through the heat absorber 334, dehumidification (second dehumidification) with respect to the 1st supply airflow 303a is performed.

In addition, the remaining second supply airflow 303b of the supply airflow 303 introduced into the dehumidifier 330 flows into the second flow path 337 of the heat exchanger 335, and is mixed with the first flow path 336 cooled by the heat absorber 334 in the first flow path 336. Air flow 303a is provided for heat exchange. As a result, the second supply airflow 303b in the second flow path 337 is cooled to condense dew, so the moisture in the second supply airflow 303b is removed. That is, by performing sensible heat exchange in the heat exchanger 335, dehumidification (third dehumidification) with respect to the 2nd supply airflow 303b is performed.

That is, the heat exchange type ventilator 350 with a dehumidification function performs dehumidification (first dehumidification to third dehumidification) by the heat exchange type ventilator 310, the heat absorber 334, and the heat exchanger 335. Moisture is removed from the outdoor high-temperature and humid supply airflow 303, at this time, the required dehumidification capacity is ensured.

Next, cooling of the radiator 332 of the dehumidifier 330 during the dehumidification operation of the heat exchange type ventilator 350 with a dehumidification function will be described.

The dehumidifier 330 is configured such that the water introduction part 338 collects dew condensation water (condensation water 334a) in the second dehumidification and water dew condensation in the third dehumidification (condensation water 335a) and sends them to the radiator 332 ( The second region 332b) of the heat sink 332 leads in. In addition, the dehumidifier 330 is configured to introduce the exhaust air flow 302 from the exhaust air passage 304 of the heat exchange type ventilator 310, and make the introduced exhaust air flow 302 pass through the radiator 332 (the first region 332a of the radiator 332). circulation. That is, in the present embodiment, the dehumidifier 330 is configured to pass the sensible heat or heat of vaporization of water introduced from the water introduction part 338 to the radiator 332 and the exhaust gas flow 302 from the heat exchange type ventilator 310 ( In the summer when dehumidification is required, the radiator 332 is cooled by the air heat of the exhaust air (exhaust air) whose temperature is lower than that of the air supply air 303 . It should be noted that the exhaust flow 302 that has absorbed heat from the radiator 332 is led out to the exhaust air passage 304 and directly discharged outdoors.

On the other hand, the dehumidifier 330 is configured so that the dehumidified supply air flow 303 flows through the radiator 332 (the second region 332b of the radiator 332). That is, the dehumidified air supply air 303 also cools the radiator 332 . However, in the present embodiment, since the radiator 332 is cooled by the water introduced from the water introduction part 338 and the exhaust air flow 302 from the heat exchange type ventilator 310, only the air supply air flow 303 is circulated for cooling as conventionally. Compared with the case, the temperature rise of the supply air flow 303 led out from the dehumidifier 330 to the supply air duct 305 can be suppressed.

Next, a method for adjusting the temperature of the supply air flow 303 in the heat exchange type ventilator 350 with a dehumidification function according to Embodiment 4-1 will be described.

As shown in FIG. 28, in the heat exchange type ventilator 350 with dehumidification function, there are a first temperature sensor 345, a second temperature sensor 346, and a control unit (not shown) associated with the control of the branch ratio of the branch damper 342. Show). The first temperature sensor 345 detects the temperature of the exhaust flow 302 before heat exchange. The second temperature sensor 346 detects the temperature of the supply airflow 303 (the mixed airflow of the first supply airflow 303 a and the second supply airflow 303 b ) that flows through the heat exchanger 335 of the dehumidifier 330 and merges. The control unit controls the second temperature sensor 346 and the branch damper 342 . The control unit controls the branch damper 342 so that the temperature detected by the second temperature sensor 346 falls within a predetermined temperature range by adjusting the branch ratio of the branch damper 342 based on the temperature detected by the first temperature sensor 345 . Specifically, when the temperature at the second temperature sensor 346 is higher than the temperature at the first temperature sensor 345, the control unit increases the air volume of the first supply air flow 303a relative to the air volume of the second supply air flow 303b, thereby The temperature of the dehumidified feed gas stream 303 is lowered. On the other hand, when the temperature at the second temperature sensor 346 is lower than the temperature at the first temperature sensor 345, the control unit reduces the air volume of the first supply air flow 303a relative to the air volume of the second supply air flow 303b, thereby The temperature of the feed gas stream 303 is raised. Accordingly, in the heat exchange type ventilator 350 with a dehumidification function, it is possible to supply the supply air flow 303 having the same temperature as the first temperature sensor 345 (exhaust air flow 302 before heat exchange sucked from the room).

As described above, according to the heat exchange type ventilator 350 with a dehumidification function according to Embodiment 4-1, the following effects can be obtained.

(1) The dehumidifier 330 is configured to include a water introduction part 338 that introduces the water condensed in the dehumidification process (the dew condensation water 334a, the dew condensation water 335a) to the radiator 332, and the water introduced from the water introduction part 338 and the dehumidification The exhaust gas flow 302 introduced by the device 330 cools the radiator 332 . Thus, the sensible heat or heat of vaporization of the water (dew condensation water 334a, dew condensation water 335a) introduced from the water introduction part 338 to the radiator 332 and the exhaust gas flow 302 from the heat exchange type ventilator 310 (when necessary In the summer of dehumidification, the heat of the air (exhaust flow) whose temperature is lower than that of the supply flow 303 obtains the energy required for cooling (exhausting heat) of the radiator 332 in the dehumidification device 330 . Therefore, the radiator 332 can be cooled efficiently, and the temperature rise of the supply airflow 303 which flows through the radiator 332 after dehumidification can be suppressed. As a result, even when the dehumidification device 330 combining the refrigeration cycle and the heat exchanger 335 is applied, it is possible to send the supply air flow 303 in which the temperature rise accompanying dehumidification is suppressed. That is, it is possible to provide the heat exchange type ventilator 350 with a dehumidification function capable of sending the supply air flow 303 whose temperature rise accompanying dehumidification is suppressed.

(2) In the dehumidifier 330, the air supply air 303 dehumidified in the dehumidifier 330 is cooled by the water introduced from the water introduction part 338 (the dew condensation water 334a, the dew condensation water 335a) in the second region of the radiator 332 332b flows through and leads out to the air supply air path 305 . On the other hand, the exhaust air flow 302 introduced into the dehumidifier 330 is configured to flow through the first region 332a and lead out to the exhaust air passage 304, and the first region 332a is introduced from the water introduction part 338 through the second region 332b. The water cooled. As a result, the water introduced from the water introduction part 338 directly cools the second region 332b of the radiator 332 through which the dehumidified supply airflow 303 flows, so that the temperature rise of the supply airflow 303 can be reliably suppressed.

(3) In the dehumidifier 330, the water introduction part 338 collects the water condensed in the heat absorber 334 (the dew water 334a) and the water condensed in the heat exchanger 335 (the dew water 335a), and These are introduced to the radiator 332 . Accordingly, since the amount of water introduced into the radiator 332 can be further increased, the radiator 332 can be cooled stably.

(4) The dehumidifier 330 is configured to adjust the temperature of the air supply air 303 supplied from the dehumidifier 330 to the room by controlling the ratio of the air volume of the first air supply air 303a to the air volume of the second air supply 303b. As a result, the temperature of the second supply airflow 303b after flowing through the second flowpath 337 can be further lowered by the airflow cooled by the heat absorber 334 (the first supply airflow 303a after flowing through the first flowpath 336). The temperature of the supply air flow 303 supplied into the room can be easily adjusted to a desired temperature.

(Embodiment 4-2)

The heat exchange type ventilator 350a with a dehumidification function according to Embodiment 4-2 of the present invention is configured such that the radiator 332 of the dehumidification device 330a is entirely disposed in the exhaust air duct 304 and the exhaust air flow 302 flows therethrough. On the other hand, the configuration differs from Embodiment 4-1 in that the dehumidified supply air flow 303 does not flow through the radiator 332 . The structure of the heat exchange type ventilator 350a with a dehumidification function other than this is the same as that of the heat exchange type ventilator 350 with a dehumidification function in Embodiment 4-1. Hereinafter, re-description of the contents described in Embodiment 4-1 will be appropriately omitted, and points different from Embodiment 4-1 will be mainly described.

A heat exchange type ventilator 350a with a dehumidification function according to Embodiment 4-2 of the present invention will be described with reference to FIG. 29 . Fig. 29 is a schematic diagram showing the configuration of a heat exchange type ventilator with a dehumidification function according to Embodiment 4-2 of the present invention.

In the dehumidifier 330a of the heat exchange type ventilator 350a with a dehumidification function, the radiator 332 that constitutes the refrigeration cycle is disposed in the exhaust air passage 304 as a whole, and other equipment (compressor 331, expander 333, The heat absorber 334 and the heat exchanger 335 ) are arranged outside the exhaust air passage 304 . That is, the water introduction part 338 is comprised so that the water (condensation water 334a, dew condensation water 335a) condensed by the dehumidification process will be introduced into the radiator 332 arrange|positioned in the exhaust air duct 304. FIG.

In addition, as shown in FIG. 29, in the dehumidification device 330a, the first supply airflow 303a in the divided supply airflow 303 flows through the heat absorber 334 and the first flow path 336 of the heat exchanger 335 in sequence, so as not to dissipate heat. The air flow is led out to the air supply air passage 305 after heat exchange in the heat exchange type ventilator 310 in the form of circulation through the device 332 . On the other hand, the second supply air flow 303b flows through the second flow passage 337 of the heat exchanger 335 , and then is led out to the heat-exchanged supply air passage 305 without flowing through the radiator 332 . In addition, the dehumidifier 330a is configured such that the first supply airflow 303a that has flowed through the heat exchanger 335 and the second supply airflow 303b that have flowed through the heat exchanger 335 are merged and then led out to the supply air passage 305 after heat exchange. .

Next, cooling of the radiator 332 of the dehumidification device 330a during the dehumidification operation of the heat exchange type ventilator 350a with a dehumidification function will be described.

The dehumidification device 330a is configured such that the water introduction part 338 collects the water condensed in the second dehumidification (condensation water 334a) and the water condensed in the third dehumidification (condensation water 335a), and sends them to the exhaust air path. The heat sink 332 inside 304 leads. In addition, the dehumidifier 330 a is configured to introduce the exhaust flow 302 from the exhaust air passage 304 of the heat exchange type ventilator 310 , and to circulate the introduced exhaust flow 302 through the radiator 332 . That is, in the present embodiment, the dehumidifier 330 a is configured to pass the sensible heat or heat of vaporization of water introduced from the water introduction part 338 to the radiator 332 and the exhaust gas flow 302 from the heat exchange type ventilator 310 . The air heat cools the radiator 332 . It should be noted that the exhaust flow 302 that has absorbed heat from the radiator 332 is led out to the exhaust air passage 304 and directly discharged outdoors.

On the other hand, the dehumidifier 330 a is configured so that the dehumidified supply air flow 303 does not flow through the radiator 332 . That is, since the dehumidified supply airflow 303 (the first supply airflow 303a, the second supply airflow 303b) is led out to the supply air passage 305 without passing through the radiator 332, no supply airflow caused by the dehumidification process will be generated. The temperature of 303 (the mixed flow of the first supply flow 303a and the second supply flow 303b) is increased.

As mentioned above, according to the heat exchange type ventilator 350a with a dehumidification function of Embodiment 4-2, the following effects can be enjoyed.

(5) In the dehumidifier 330 a , the supply air flow 303 (the dehumidified supply air flow 303 ) led to the air supply air passage 305 is led to the air supply air passage 305 so as not to flow through the radiator 332 . On the other hand, the exhaust flow 302 introduced into the dehumidifier 330a is configured to flow through the radiator 332 cooled by the water (condensation water 334a, dew condensation water 335a) introduced from the water introduction part 338, and flow to the exhaust air passage 304. export. As a result, the dehumidified air (supply air flow 303 ) is blown into the room without passing through the radiator 332 , so that a temperature rise accompanying dehumidification can be reliably suppressed. That is, it is possible to provide the heat exchange type ventilator 350a with a dehumidification function capable of sending the supply air flow 303 whose temperature rise accompanying dehumidification is suppressed.

As mentioned above, although this invention was demonstrated based on embodiment, it is easy to guess that this invention is not limited to the said embodiment at all, and various improvement and deformation|transformation are possible in the range which does not deviate from the summary of this invention. For example, the numerical values listed in the above-mentioned embodiments are examples, and other numerical values can of course be adopted.

In Embodiments 4-1 and 4-2, a sensible heat type heat exchange element was used as the heat exchanger 335, but as the sensible heat type heat exchange element, it is preferable that the first flow path 336 and the second flow path 336 constituting the heat exchange element be used. The members of the secondary channel 337 are waterproof (hydrophobic). As a member having water repellency (water repellency), resin members such as polypropylene and polystyrene are used, for example. In this way, the dew condensation water 335a generated inside the heat exchange element easily flows out of the heat exchange element, so dehumidification can be performed without reducing the heat exchange efficiency of the heat exchanger 335 due to the dew condensation water 335a.

In addition, in Embodiment 4-1, as the heat sink 332, one heat sink was divided into the 1st area|region 332a and the 2nd area|region 332b, but it is not limited to this. For example, it may also be configured such that a first radiator (radiator on the exhaust air passage side) corresponding to the first area 332a and a second radiator (radiator on the air supply air passage side) corresponding to the second area 332b are used. The two heat sinks constitute the heat sink 332, and the first heat sink and the second heat sink are thermally connected by copper pipes or the like. In this way, the degree of freedom of arrangement of the radiator 332 inside the heat exchange type ventilator 350 with a dehumidification function can be improved.

In addition, in Embodiments 4-1 and 4-2, the water introduction part 338 is configured to introduce dew-condensed water (the dew-condensed water 334a, the dew-condensed water 335a) into the radiator 332, but the present invention is not limited thereto. For example, a configuration may be adopted in which dew-condensed water is introduced into a copper pipe connecting the radiator 332 and the expander 333 constituting the refrigeration cycle. In this way, the cooling structure of the radiator 332 inside the heat exchange type ventilator 350 with a dehumidification function can be simplified.

In addition, in Embodiments 4-1 and 4-2, the water introduction part 338 is configured so that the water condensed in the heat absorber 334 (the dew water 334a) and the water condensed in the heat exchanger 335 (the dew water 335a) collects and introduces them to the radiator 332, but is not limited thereto. For example, the water introduction part 338 may be configured so that only the water condensed in the heat absorber 334 (condensation water 334 a ) is collected and introduced into the radiator 332 .

In addition, in Embodiments 4-1 and 4-2, the water introduction part 338 introduces water to the radiator 332 by falling naturally, but the present invention is not limited thereto. For example, a water nozzle may be provided at the tip pipe portion of the funnel-shaped water introduction portion 338 , and water may be sprayed from the water nozzle to the radiator 332 in a mist form. In this way, the water introduction part 338 can introduce water to a wide range of the surface of the heat radiation pipe etc. which comprise the radiator 332, Therefore The radiator 332 can be cooled more effectively.

(Embodiment 5)

Conventionally, a heat exchange type ventilator that performs heat exchange between a supply airflow and an exhaust airflow during ventilation is known as an apparatus that can ventilate without impairing the effect of cooling or heating.

In recent years, due to the influence of global warming and the improvement of the airtightness of houses, the indoors have become low temperature and dry in winter, and on the other hand, the indoors have become hot and humid in summer, so there is a sense of comfort for the occupants. Damaged concerns. In any case, to improve indoor comfort, indoor humidity management is particularly important. Therefore, a heat exchange type ventilator with a humidity control function (dehumidification function) that performs heat exchange and ventilation while adjusting indoor humidity has been sought. Therefore, in order to realize the humidification function in the humidity control work, we have carried out the development of a heat exchange type ventilator using a liquid miniaturization device for humidifying by crushing water. On the other hand, in order to realize the dehumidification function, we have carried out development. Development of a heat exchange type ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a liquid miniaturization device for humidifying by crushing water, for example, a liquid miniaturization device described in Patent Document 1 is known. In addition, as a dehumidifier combining a refrigeration cycle and a heat exchanger, for example, a dehumidifier described in Patent Document 2 is known.

First, a conventional liquid miniaturization device will be described using FIG. 38 .

As shown in FIG. 38 , a conventional liquid miniaturization device 2101 includes: a processing chamber 2102 through which external air is passed by a blower; and a water storage unit 2103 which stores a predetermined amount of water supplied from a water supply pipe. In addition, it is equipped with: a mortar-shaped rotating body 2104 whose lower part is submerged in the water of the water storage part 2103 and whose diameter tends to expand upward; and a cylindrical porous body 2105 which rotates together with the rotating body 2104 and which The water and air scattered by the centrifugal force generated by the rotation of the rotating body 2104 pass. And, under the action of the centrifugal force generated due to the rotation of the rotating body 2104, water is drawn from the water storage part 2103, and the water scattered outward from the rotating body 2104 passes through the porous body 2105 and collides with the peripheral part, thereby finely dissipating the water. change. Thus, in the conventional liquid miniaturization device 2101, humidification of the introduced air is performed.

Next, a conventional dehumidifier will be described with reference to FIG. 9 .

As shown in FIG. 9 , a conventional dehumidifier 1100 is configured such that after air (air X, air Y) sucked into a main body casing 1102 from an air inlet 1101 passes through a dehumidifier 1103, the air is blown out from an air outlet 1104. Blow out to the outside of the main body casing 1102 . The dehumidifier 1103 includes a refrigeration cycle and a heat exchanger 1111 . In the refrigeration cycle, a compressor 1105, a radiator 1106, an expander 1107, and a heat absorber 1108 are sequentially connected. The heat exchanger 1111 is disposed between the heat absorber 1108 and the radiator 1106 , and performs heat exchange between the air X flowing in the first flow path 1109 and the air Y flowing in the second flow path 1110 .

Then, the air X flowing through the first flow path 1109 is cooled by the heat absorber 1108 to generate dew condensation. The condensation water generated by the cooled air X is recovered. On the other hand, the air Y flowing through the second flow path 1110 exchanges heat with the air X cooled by the heat absorber 1108 to be cooled, and dew condensation occurs. Dew condensation water generated from the cooled air Y is also recovered. In this way, dehumidification of air is performed by the dehumidifier 1100 .

In the case of developing a heat exchange type ventilator with a humidity control function incorporating the humidification function of the above-mentioned conventional liquid miniaturization device 2101 and the dehumidification function of the conventional dehumidification device 1100, it is possible to achieve a certain level of dehumidification during dehumidification. The amount of humidity control (humidification amount, dehumidification amount) of the level. However, in a residential environment with a large difference in temperature and humidity throughout the year, further improvement in humidity control performance is strongly demanded in order to improve indoor comfort for occupants. For example, it is known that Japan is a residential environment with a large difference in temperature and humidity throughout the year. In addition, in Japan, since the installation space in the living space is limited, it is necessary to improve the humidity control performance without increasing the size of the heat exchange type ventilator with the humidity control function.

The present invention was made to solve the above problems, and provides a heat exchange type ventilator with a humidity control function capable of improving the humidity control performance during dehumidification and humidification.

In order to achieve this object, the heat exchange type ventilator with humidity control function of the present invention includes: a heat exchange type ventilator that performs heat exchange between an exhaust flow and a supply air flow, and the exhaust flow is used for The indoor air flows to the exhaust air path that is discharged outside, and the supply air flow circulates in the air supply air path for supplying the outdoor air to the indoor; air flow, and humidify the imported air supply; and a dehumidification device, which is configured to introduce heat-exchanged air supply from the air supply air path, and dehumidify the imported air supply. The dehumidification device includes: a refrigerant cycle composed of a compressor, a radiator, an expander, a heat absorber, and a four-way valve; and a heat exchanger arranged on the downstream side of the heat absorber and flowing in the first flow Heat exchange is performed between the air in the first flow path and the air flowing in the second flow path. Also, the dehumidifier has: a dehumidification mode in which the flow of the refrigerant in the refrigerant cycle is made into a first direction through the four-way valve and dehumidifies the supply air; and a heating mode in which the refrigerant in the refrigerant cycle is made to flow through the four-way valve. The flow becomes a second direction opposite to the first direction and heats the supply flow. A part of the air supply introduced into the dehumidification device is exported to the air supply air passage after passing through the heat absorber and the first flow path of the heat exchanger, and another part of the air supply introduced into the dehumidification device flows through the first flow path of the heat exchanger. After the second flow path, it is exported to the air supply air path. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path. In the dehumidification mode, the supply air from the dehumidifier to the supply air path is supplied to the room without being humidified by the humidifier. Humidifies and supplies indoors.

According to the present invention, it is possible to provide a heat exchange type ventilator with a humidity control function capable of improving the humidity control performance during dehumidification and humidification.

The heat exchange type ventilator with humidity control function of the present invention is provided with: a heat exchange type ventilator that performs heat exchange between an exhaust flow and a supply air flow, and the exhaust flow is used to transfer indoor air to the outside. The discharged exhaust air path circulates, and the supply air flow circulates in the air supply air path for supplying outdoor air to the room; the humidifier is configured to introduce the heat-exchanged supply air flow from the air supply air path, and Humidifying the supplied air flow; and a dehumidification device, which is configured to introduce the heat-exchanged supply air flow from the air supply air path, and dehumidify the introduced supply air flow. The dehumidification device includes: a refrigerant cycle composed of a compressor, a radiator, an expander, a heat absorber, and a four-way valve; and a heat exchanger arranged on the downstream side of the heat absorber and flowing in the first flow Heat exchange is performed between the air in the first flow path and the air flowing in the second flow path. Also, the dehumidifier has: a dehumidification mode in which the flow of the refrigerant in the refrigerant cycle is made into a first direction through the four-way valve and dehumidifies the supply air; and a heating mode in which the refrigerant in the refrigerant cycle is made to flow through the four-way valve. The flow becomes a second direction opposite to the first direction and heats the supply flow. A part of the air supply air introduced into the dehumidification device is led out to the air supply air path after passing through the heat absorber and the first flow path; The air and wind path is exported. The exhaust flow introduced into the dehumidifier passes through the radiator, and then is led out to the exhaust air path. In the dehumidification mode, the supply air from the dehumidifier to the supply air path is supplied to the room without being humidified by the humidifier. Humidifies and supplies indoors.

According to such a configuration, the supply air flow introduced into the humidifier can be easily heated by switching the four-way valve of the dehumidifier, and the humidification amount of the supply air flowing through the humidifier can be increased. That is, it is possible to provide a heat exchange type ventilator with a humidity control function capable of improving the humidity control performance during dehumidification and humidification.

In addition, the heat exchange type ventilator with a humidity control function of the present invention may further include an air passage switching unit provided in the air supply air passage after heat exchange. In addition, the air path switching unit is configured to allow the state in which the heat-exchanged supply air flow is introduced into the humidifier while passing through the dehumidifier, and the state in which the heat-exchanged supply air flow is introduced into the humidifier without passing through the dehumidifier. to switch. According to such a structure, when there is no need to heat the supply air flow introduced into the humidifier, it can be easily controlled by the air path switching part so that the supply air flow does not flow to the dehumidifier, so that during humidification, the dehumidifier The increase in pressure loss caused by this is suppressed, and energy-saving operation can be realized.

Moreover, in the heat exchange type ventilator with a humidity control function of this invention, a dehumidifier may further be equipped with the water blowing part which blows water to a radiator. In addition, in the dehumidification mode, the exhaust flow introduced into the dehumidifier passes through the radiator in a state where water is blown by the water blowing unit, and then is led out to the exhaust air path. According to such a structure, in the dehumidification mode, the cooling (exhaust heat) of the radiator in the dehumidification device can be obtained by the air heat of the exhaust flow from the heat exchange type ventilator and the vaporization heat of the blown water. of energy, thus effectively cooling the radiator. Therefore, the amount of dehumidification removed from the supply air flowing through the dehumidification device can be increased. That is, it is possible to provide a heat exchange type ventilator with a humidity control function capable of improving the humidity control performance during dehumidification and humidification.

Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In addition, the following embodiment is an example which actualized this invention, and does not limit the technical scope of this invention. In addition, in all drawings, the same code|symbol is attached|subjected to the same part, and description is abbreviate|omitted. In addition, the description of each drawing will be omitted in order to avoid repetition of the details of each part that is not directly related to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(premise example)

First, a heat exchange type ventilator serving as a premise example of an embodiment of the present invention will be described with reference to FIGS. 30 and 31 . Fig. 30 is a schematic diagram showing an installation state of a heat exchange type ventilator of a precondition example of the present invention in a house. Fig. 31 is a schematic diagram showing the configuration of a heat exchange type ventilator according to a precondition example of the present invention.

In FIG. 30 , a heat exchange type ventilator 410 is installed in a room of a house 401 . The heat exchange type ventilation device 410 is a device that performs ventilation while exchanging heat between indoor air and outdoor air.

As shown in FIG. 30 , the exhaust flow 402 is discharged to the outside through the heat exchange type ventilator 410 as indicated by the black arrow. Exhaust flow 402 is the flow of air discharged from the room to the outside. In addition, the supply air flow 403 is taken into the room via the heat exchange type ventilator 410 as indicated by a white arrow. The supply air flow 403 is the air flow taken in from the outside into the room. For example, taking winter in Japan as an example, the exhaust air flow 402 is 20° C. to 25° C., whereas the supply air flow 403 may be below freezing point. The heat exchange type ventilator 410 performs ventilation, and during the ventilation, transfers the heat of the exhaust flow 402 to the supply flow 403 , thereby suppressing unnecessary heat emission.

As shown in FIG. 31 , the heat exchange type ventilator 410 has a main body casing 411, a heat exchange element 412, an exhaust fan 413, an inner air port 414, an exhaust port 415, an air supply fan 416, an outer air port 417, and an air supply port 418. , exhaust air path 404, air supply air path 405. The main body case 411 is the outer frame of the heat exchange type ventilator 410 . An inner air port 414 , an exhaust port 415 , an outer air port 417 , and an air supply port 418 are formed on the outer periphery of the main body casing 411 . The inner air port 414 is a suction port for sucking the exhaust flow 402 into the heat exchange type ventilator 410 . The exhaust port 415 is a discharge port for discharging the exhaust flow 402 from the heat exchange type ventilator 410 to the outside. The external air port 417 is a suction port for sucking the supply air 403 into the heat exchange type ventilator 410 . The air supply port 418 is a discharge port for discharging the supply air flow 403 from the heat exchange type ventilator 410 into the room.

A heat exchange element 412 , an exhaust fan 413 , and an air supply fan 416 are installed inside the main body casing 411 . In addition, an exhaust air passage 404 and an air supply air passage 405 are formed inside the main body casing 411 . The heat exchange element 412 is a member for exchanging heat (sensible heat and latent heat) between the exhaust flow 402 flowing through the exhaust air passage 404 and the supply air flow 403 flowing through the supply air passage 405 . The exhaust fan 413 is a blower for sucking the exhaust flow 402 from the inner air port 414 and discharging it from the exhaust port 415 . The air supply fan 416 is a blower for sucking the supply airflow 403 from the external air port 417 and discharging it from the air supply port 418 . The exhaust air passage 404 is an air passage connecting the inner air port 414 and the exhaust port 415 . The air supply air path 405 is an air path connecting the external air port 417 and the air supply port 418 . The exhaust flow 402 sucked by the exhaust fan 413 is exhausted to the outside through the exhaust port 415 via the heat exchange element 412 in the exhaust air passage 404 and the exhaust fan 413 . In addition, the air supply airflow 403 sucked by the air supply fan 416 is supplied into the room from the air supply port 418 via the heat exchange element 412 in the air supply air path 405 and the air supply fan 416 .

When the heat exchange type ventilator 410 performs heat exchange and ventilation, the exhaust fan 413 and the air supply fan 416 of the heat exchange element 412 are operated, so that in the heat exchange element 412, the Heat exchange is performed between the exhaust flow 402 at 404 and the supply flow 403 flowing through the supply air path 405 . Thus, when the heat exchange type ventilator 410 performs ventilation, the heat of the exhaust air flow 402 discharged outdoors is transferred to the air supply air flow 403 taken into the room, thereby suppressing the discharge of unnecessary heat and sending the heat to the indoor air. heat recovery. As a result, in winter, when ventilation is performed, it is possible to suppress a decrease in the indoor temperature due to the low-temperature outdoor air. On the other hand, in summer, when ventilation is performed, it is possible to suppress an increase in indoor temperature due to outdoor air having a high temperature.

Embodiment 5 includes at least the following Embodiment 5-1, Embodiment 5-2, and Embodiment 5-3.

(Embodiment 5-1)

Next, a heat exchange type ventilator with a humidity control function (dehumidification function) according to Embodiment 5-1 will be described with reference to FIG. 32 . Fig. 32 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-1 of the present invention. It should be noted that in each schematic diagram after FIG. 32 , the exhaust air passage 404 and the air supply air passage 405 are also used as the flow of the exhaust air flow 402 and the air supply air flow 403 in the heat exchange type ventilator 410 (black arrows). ) to mark.

First, the flow of the airflow (exhaust airflow 402, supply airflow 403) in the heat exchange type ventilator 450 with a humidity control function will be described. It should be noted that, in the following description, the airflow (exhaust airflow 402, supply airflow 403) or air path (exhaust air path 404, air supply air path 405) after heat exchange means that the air flow through the heat exchange type ventilator The airflow or air path after the heat exchange element 412 in 410 and the airflow or air path before heat exchange represent the airflow or air path before passing through the heat exchange element 412 .

As shown in FIG. 32 , the heat-exchange-type ventilator 450 with a humidity control function according to Embodiment 5-1 has a dehumidifier 430 as a mechanism for imparting a dehumidification function and a dehumidifier as It is a structure in which the liquid miniaturization device 460 of the mechanism for humidification is provided. It should be noted that the liquid miniaturization device 460 corresponds to a "humidifier".

And, as shown in FIG. 32, in the heat exchange type ventilator 410, a switching damper 440 is provided on the exhaust air passage 404 after the heat exchange, and a switching damper 441 and a switching damper 441 are provided on the air supply air passage 405 after the heat exchange. Switch damper 443. The switching damper 440 is used to switch between the state where the exhaust air flow 402 flowing in the exhaust air passage 404 flows to the outside and the state in which the exhaust air flow 402 flowing in the exhaust air passage 404 flows to the dehumidifier 430 . throttle. In addition, the switch damper 441 is for switching between the state where the supply air flow 403 flowing through the air supply air passage 405 flows toward the indoor side, and the state where the supply air flow 403 flowing through the air supply air passage 405 flows toward the dehumidifier 430 . damper. In addition, the switching damper 443 is provided on the downstream side (indoor side of the air supply air path 405 ) of the switching damper 441 , and is used to control the state of the supply air flow 403 flowing through the air supply air path 405 flowing into the room. And a damper for switching the state where the supply air flow 403 flowing through the supply air passage 405 flows to the liquid miniaturization device 460 . It should be noted that the supply air flow 403 having passed through the dehumidifier 430 is led out to the supply air passage 405 upstream of the switching damper 443 (the heat exchange element 412 side). Here, the switching damper 440, the switching damper 441, and the switching damper 443 correspond to an "air passage switching part."

In the heat exchange type ventilator 450 with a humidity control function, by switching each switching damper (switching damper 440, switching damper 441, switching damper 443), it can be in the following state: (A) The supply air flow after heat exchange 403 is the A state that is supplied to the room without circulating through the dehumidification device 430 and the liquid miniaturization device 460; State B of indoor supply; (C) state C in which the supply air flow 403 after heat exchange does not circulate in the dehumidification device 430, but circulates in the liquid miniaturization device 460 and is supplied to the room; (D) the supply air flow 403 after heat exchange is dehumidified The D state in which the device 430 circulates, and then circulates in the liquid miniaturization device 460 and supplies it to the chamber.

In state A, when dehumidification and humidification are not required, the supply air flow 403 heat-exchanged by the heat-exchange-type ventilator 410 is directly supplied into the room.

In state B, in summer when dehumidification is required, dehumidified supply air 403 after heat exchange is dehumidified, and dehumidified supply air 3 is supplied to the room.

In the state C, in winter when humidification is required, after humidifying the heat-exchanged supply air 403 , the humidified supply air 403 is supplied into the room.

In the state D, when the amount of humidification is required more than that in the state C, the heat-exchanged supply air 403 is heated and humidified, and then the humidified supply air 403 is supplied into the room.

As described above, the heat exchange type ventilator 450 with a humidity control function is configured to supply the supply airflow 403 to the room while controlling the appropriate humidity by switching the flow of the supply airflow 403 from the A state to the D state. It should be noted that the details of the dehumidification operation and humidification operation will be described later, but when dehumidification and humidification are not required, the pressure loss caused by the dehumidification device 430 and the liquid miniaturization device 460 can be reduced by setting the A state. The rise is suppressed, and as the heat exchange type ventilator 450 with a humidity control function, it is possible to realize energy-saving operation throughout the year.

Next, the dehumidifier 430 in the heat exchange type ventilator 450 with a humidity control function will be described with reference to FIGS. 32 to 34 . Fig. 33 is a schematic diagram showing the structure of a dehumidifier in a dehumidification mode in a heat exchange type ventilator with a humidity control function. Fig. 34 is a schematic diagram showing the structure of a dehumidifier in a heating mode in a heat exchange type ventilator with a humidity control function.

The dehumidifier 430 is a unit for dehumidifying or heating the heat-exchanged supply airflow 403 in the heat exchange type ventilator 410 . As shown in FIG. 32 , the dehumidifier 430 includes: a refrigerant cycle including a compressor 431 , a four-way valve 431 a , a radiator 432 , an expander 433 , and a heat exchanger 434 ; and a heat exchanger 435 . In addition, the refrigerant cycle of the present embodiment is configured such that the compressor 431 (+four-way valve 431 a ), the radiator 432 , the expander 433 , and the heat absorber 434 are sequentially connected in a ring shape. In the refrigerant cycle, for example, alternative Freon (HFC134a) is used as the refrigerant. In addition, copper pipes are often used for connecting the various devices that constitute the refrigeration cycle, and they are connected by welding.

The four-way valve 431a is a device (reversible valve) for switching the flow direction of the refrigerant flowing in the refrigerant cycle. Specifically, the four-way valve 431a controls the first direction (refer to FIG. 33 ) in which the refrigerant flows sequentially through the compressor 431 , the radiator 432 , the expander 433 , and the heat absorber 434 , and the flow of the refrigerant sequentially through the compressor 431 . , the heat absorber 434, the expander 433, and the radiator 432 are switched in the second direction (refer to FIG. 34 ) of circulation. The flow of the refrigerant is in the opposite direction with respect to the first direction and the second direction.

The refrigerant cycle has: the state of the dehumidification mode, in which the refrigerant is circulated in the first direction through the four-way valve 431a and dehumidifies the supply air flow 403 (refer to FIG. 33 ); The refrigerant is circulated in the second direction to heat the supply air flow 403 (see FIG. 34 ). It should be noted that although the radiator 432 and the heat absorber 434 are names corresponding to the functions in the dehumidification mode, they will also be directly used in the heating mode for description below.

<Dehumidification mode>

As shown in FIG. 33 , in the dehumidification mode, the refrigerant flows sequentially through the compressor 431 , radiator 432 , expander 433 , and heat absorber 434 (first direction) through the four-way valve 431 a.

The compressor 431 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle to increase the pressure and increase the temperature. In the present embodiment, the compressor 431 raises the temperature of the refrigerant gas to about 45°C.

The radiator 432 is a device for exchanging heat between refrigerant gas that has become high-temperature and high-pressure by the compressor 431 and air (exhaust gas flow 402 ) to discharge heat to the outside (outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 432, since the temperature (about 45 degreeC) of the refrigerant|coolant gas introduced is higher than the temperature of air, when heat exchange is performed, the temperature of the air rises, and the refrigerant gas is cooled. It should be noted that the radiator 432 is also called a condenser.

The expander 433 is a device that decompresses the high-pressure refrigerant liquefied by the radiator 432 to convert it into an original low-temperature and low-pressure liquid. It should be noted that the expander 433 is also called an expansion valve.

The heat absorber 434 is a device that causes the refrigerant that has passed through the expander 433 to absorb heat from the air to evaporate the liquid refrigerant into a low-temperature, low-pressure refrigerant gas. In the heat absorber 434 , since the temperature of the introduced refrigerant is lower than the temperature of the air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises. It should be noted that the heat absorber 434 is also called an evaporator.

<heating mode>

As shown in FIG. 34 , in the heating mode, the refrigerant flows through the compressor 431 , the heat absorber 434 , the expander 433 , and the radiator 432 (second direction) sequentially through the four-way valve 431 a.

Similar to the dehumidification mode, the compressor 431 compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle to increase the pressure and increase the temperature.

The heat absorber 434 is a device that functions the same as the radiator 432 in the dehumidification mode. Specifically, the heat absorber 434 discharges heat to the outside (outside the refrigerant cycle) by exchanging heat between the refrigerant gas that has become high-temperature and high-pressure by the compressor 431 and air (the first supply air flow 403 a described later). . At this time, the refrigerant gas is condensed and liquefied under high pressure. In the heat absorber 434, since the temperature (about 45 degreeC) of the refrigerant|coolant gas introduced is higher than the temperature of air, when heat exchange is performed, the temperature of the air rises, and the refrigerant gas is cooled.

The expander 433 depressurizes the high-pressure refrigerant liquefied by the heat absorber 434 into an original low-temperature and low-pressure liquid.

The radiator 432 functions as the same function as the heat absorber 434 in the dehumidification mode. Specifically, the radiator 432 causes the refrigerant that has passed through the expander 433 to absorb heat from the air to evaporate the liquid refrigerant into a low-temperature, low-pressure refrigerant gas. Since the temperature of the refrigerant introduced into the radiator 432 is lower than that of the air, when heat exchange is performed, the air is cooled and the temperature of the refrigerant rises.

In addition, the heat exchanger 435 is a heat exchanger including a sensible heat type heat exchange element. Heat exchanger 435 is disposed in a space downstream of heat absorber 434 (between heat absorber 434 and radiator 432 ), similarly to heat exchanger 1111 (see FIG. 9 ) in conventional dehumidifier 1100 . Inside the heat exchanger 435 are provided a first flow path 436 through which air flows in a predetermined direction, and a second flow path 437 through which air flows in a direction substantially perpendicular to the first flow path 436 . The first flow path 436 is a flow path that leads the air introduced from the heat absorber 434 to the air supply air path 405 without circulating through the radiator 432 . The second flow path 437 is a flow path that leads the air introduced from the heat exchange type ventilator 410 to the air supply air path 405 without circulating through the radiator 432 . Furthermore, the heat exchanger 435 exchanges only sensible heat between the air flowing through the first flow path 436 and the air flowing through the second flow path 437 .

Next, the flow of the airflow (exhaust airflow 402, supply airflow 403) in the dehumidifier 430 will be described.

As shown in FIG. 32 , the dehumidifier 430 is provided with a branch damper 442 that divides the heat-exchanged supply airflow 403 introduced into the inside into two airflows (the first supply airflow 403a and the second supply airflow 403b ). . The first supply airflow 403 a is an airflow introduced to the heat absorber 434 and circulated in the first flowpath 436 , and the second supply airflow 403 b is an airflow introduced into the heat exchanger 435 and circulated in the second flowpath 437 . The branch damper 442 is configured to vary the ratio of the air volume of the first supply air flow 403a to the air volume of the second supply air flow 403b. That is, the branch damper 442 can easily increase or decrease the ratio of the first supply airflow 403 a to the second supply airflow 403 b by adjusting the angle of the damper (the branching ratio of the heat-exchanged supply airflow 3 ). Here, the first supply airflow 403a corresponds to "a part of the supply airflow introduced into the dehumidifier", and the second supply airflow 403b corresponds to "the other part of the supply airflow introduced into the dehumidifier".

In the dehumidifier 430, the first supply airflow 403a in the divided supply airflow 3 flows through the heat absorber 434, the first flow path 436 of the heat exchanger 435, and the radiator 432 (first direction) in sequence, and then flows to the heat The heat exchanged air supply air path 405 in the exchange type ventilator 410 is led out. On the other hand, the second supply air flow 403b flows through the second flow channel 437 of the heat exchanger 435 and the radiator 432 (in the second direction) in sequence, and then is led out to the supply air channel 405 after heat exchange. In this embodiment, the dehumidifier 430 is configured such that the first supply airflow 403a after passing through the heat exchanger 435 and the second supply airflow 403b after passing through the heat exchanger 435 are merged, and then the heat-exchanged supply air The wind road 405 leads out. Thereby, temperature adjustment is performed as the supply air flow 403 sent into the room. A method for adjusting the temperature of the supply air flow 403 sent into the room will be described later.

On the other hand, the exhaust flow 402 introduced into the dehumidifier 430 passes through the radiator 432 and then is led out to the exhaust air passage 404 after heat exchange in the heat exchange type ventilator 410 . That is, in this embodiment, the dehumidifier 430 is configured to cool the radiator 432 by the exhaust gas flow 402 introduced from the heat exchange type ventilator 410 .

Next, the dehumidification operation (dehumidification mode) and heating operation (heating mode) of the dehumidification device 430 will be described.

<Dehumidification mode>

First, by operating the heat exchange type ventilator 450 with a humidity control function, each switching damper is switched so that the flow of the airflow becomes the B state. Then, the exhaust fan 413 and the air supply fan 416 are driven, and the exhaust air flow 402 flowing through the exhaust air passage 404 and the supply air flow 403 flowing through the air supply air passage 405 are generated inside the heat exchange type ventilator 410 .

For example, in summer, the exhaust air flow 402 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 403 is outdoor air with high temperature and humidity.

The exhaust flow 402 and the supply flow 403 exchange sensible heat and latent heat inside the heat exchange type ventilator 410 . At this time, moisture moves from the high-temperature and high-humidity supply airflow 403 to the exhaust flow 402, so the moisture in the supply airflow 403 is removed. That is, dehumidification (first dehumidification) for the supply airflow 403 is performed by total heat exchange inside the heat exchange type ventilator 410 .

Next, the heat-exchanged air supply air 403 is introduced into the dehumidifier 430 and dehumidified. Specifically, the first supply airflow 403 a of the supply airflow 403 introduced into the dehumidification device 430 is cooled by the heat absorber 434 . Thereby, the temperature of the 1st supply airflow 403a becomes below dew point temperature, and since the 1st supply airflow 403a condenses, the moisture of the 1st supply airflow 403a is removed. That is, dehumidification (second dehumidification) with respect to the 1st supply airflow 403a is performed by passing through the heat absorber 434.

In addition, the remaining second supply airflow 403b of the supply airflow 403 introduced into the dehumidification device 430 flows into the second flow path 437 of the heat exchanger 435, and is mixed with the first flow path 436 cooled by the heat absorber 434 in the first flow path 436. Air flow 403a is provided for heat exchange. As a result, the second supply airflow 403b in the second flow path 437 is cooled to condense dew, and thus the moisture in the second supply airflow 403b is removed. That is, by performing sensible heat exchange in the heat exchanger 435, dehumidification (third dehumidification) with respect to the 2nd supply airflow 403b is performed.

That is to say, the heat exchange type ventilator 450 with a humidity control function performs dehumidification (first to third dehumidification) by the heat exchange type ventilator 410, the heat absorber 434, and the heat exchanger 435, And the moisture is removed from the outdoor high-temperature and humid air supply air 403 , at this time, the required dehumidification capacity is ensured.

In addition, the dehumidifier 430 in the heat exchange type ventilator 450 with a humidity control function is configured to introduce the exhaust air flow 402 from the exhaust air passage 404 of the heat exchange type ventilator 410, and to make the introduced exhaust air flow 402 Circulation at radiator 432 . In the radiator 432, heat equivalent to the energy absorbed in the heat absorber 434 and the energy used to circulate the refrigerant in the refrigerant cycle in the compressor 431 is discharged by the introduced exhaust flow 402, from heat radiation The exhaust flow 402 that has absorbed heat in the device 432 is guided to the exhaust air path 404 and directly discharged to the outside. That is, the radiator 432 is cooled by the incoming exhaust gas flow 402 . And, as a result, the temperature rise of the supply airflow 403 (the first supply airflow 403a, the second supply airflow 403b) accompanying the flow through the radiator 432 is suppressed.

<heating mode>

First, by operating the heat exchange type ventilator 450 with a humidity control function, each switching damper is switched so that the flow of the airflow becomes the D state. Then, the exhaust fan 413 and the air supply fan 416 are driven, and the exhaust air flow 402 flowing through the exhaust air passage 404 and the supply air flow 403 flowing through the air supply air passage 405 are generated inside the heat exchange type ventilator 410 .

For example, in winter, the exhaust air flow 402 is indoor air adjusted to a comfortable temperature and humidity by an air conditioner, and the supply air flow 403 is low-temperature and dry outdoor air.

The exhaust flow 402 and the supply flow 403 exchange sensible heat and latent heat inside the heat exchange type ventilator 410 . At this point, moisture is moving from the exhaust gas stream 402 to the low temperature, dry feed gas stream 403, but the feed gas stream 403 is not sufficiently humidified.

Next, the heat-exchanged supply airflow 403 is introduced into the dehumidifier 430 and heated. Specifically, the first supply airflow 403 a of the supply airflow 403 introduced into the dehumidification device 430 is heated by the heat absorber 434 . In addition, the remaining second supply airflow 403b of the supply airflow 403 introduced into the dehumidifier 430 flows into the second flow path 437 of the heat exchanger 435, and is mixed with the first flow path 436 heated by the heat absorber 434. Air flow 403a is provided for heat exchange. Then, due to circulation in the radiator 432, the temperature of the supply airflow 403 (the first supply airflow 403a, the second supply airflow 403b) derived from the heat exchanger 435 is reduced, but it is the same as the temperature of the supply airflow 403 before the dehumidifier 430. The temperature of the air supply airflow 403 rises and is led out to the air supply air passage 405 .

In the radiator 432, heat corresponding to the energy released in the heat absorber 434 and the energy used to circulate the refrigerant in the refrigerant cycle in the compressor 431 is absorbed by the introduced exhaust flow 402, and the heat radiation is The exhaust flow 402 to which heat has been imparted by the device 432 is led out to the exhaust air path 404, and is directly discharged outdoors.

Next, a method for adjusting the temperature of the supply air flow 403 in the dehumidifier 430 will be described.

As shown in FIG. 32 , in the heat exchange type ventilator 450 with a humidity control function, in connection with the control of the branch ratio of the branch damper 442 , there is a first temperature sensor 445 , which measures the temperature of the exhaust flow before heat exchange. The temperature of 402 is detected; the second temperature sensor 446 is used to detect the temperature of the air supply air 403 (the mixed air flow of the first air supply air 403a and the second air supply 403b) after the heat absorber 434 of the dehumidification device 430 circulates and merges. detection; and a control unit (not shown), which controls the branch damper 442 .

The control unit controls the branch damper 442 so that the temperature detected by the second temperature sensor 446 falls within a predetermined temperature range by adjusting the branch ratio of the branch damper 442 based on the temperature detected by the first temperature sensor 445 . Specifically, when the temperature at the second temperature sensor 446 is higher than the temperature at the first temperature sensor 445, the control unit increases the air volume of the first supply air stream 403a relative to the air volume of the second supply air stream 403b, thereby The temperature of the dehumidified feed gas stream 403 is lowered. On the other hand, when the temperature at the second temperature sensor 446 is lower than the temperature at the first temperature sensor 445, the control unit reduces the air volume of the first supply air stream 403a relative to the air volume of the second supply air stream 403b, thereby The temperature of the feed gas stream 403 is raised. Thus, in the heat exchange type ventilator 450 with a humidity control function, it is possible to supply the supply air flow 403 at the same temperature as the first temperature sensor 445 (exhaust air flow 402 before heat exchange sucked from the room). .

Next, the liquid miniaturization device 460 in the heat exchange type ventilator 450 with a humidity control function will be described with reference to FIG. 35 . Fig. 35 is a schematic diagram showing the structure of a liquid miniaturization device in a heat exchange type ventilator with a humidity control function.

The liquid miniaturization device 460 is a humidifier that miniaturizes water and blows out the inhaled air containing the miniaturized water.

As shown in FIG. 35 , the liquid miniaturization device 460 includes an inlet 462 , an outlet 463 , an inner cylinder 464 , an outer cylinder 468 , and a water receiving portion 471 .

The suction port 462 is an opening for sucking air into the liquid miniaturization device 460 , and is provided on a side surface of the liquid miniaturization device 460 . In addition, the suction port 462 has a shape (for example, a cylindrical shape) to which ducts can be connected, and is connected to the heat-exchanged air supply air path 405 via the switching damper 443 (see FIG. 32 ).

The air outlet 463 is an opening for blowing out the air passing through the liquid miniaturization device 460 , and is provided on the upper surface of the liquid miniaturization device 460 . In addition, the outlet 463 is formed in a region partitioned by the inner cylinder 464 and the outer cylinder 468 (the region between the inner cylinder 464 and the outer cylinder 468 ). In addition, the outlet 463 is provided around the inner cylinder 464 on the upper surface of the liquid miniaturization device 460 . In addition, the air outlet 463 is provided above the air inlet 462 . Moreover, the air outlet 463 has the shape which can connect the cylindrical duct, and is connected to the air supply air path 405 after heat exchange (refer FIG. 32).

Then, the air sucked in from the suction port 462 passes through the liquid miniaturization unit 477 described later to become humidified air, and is blown out from the blower port 463 .

The inner cylinder 464 is disposed near the center of the liquid miniaturization device 460 . In addition, the inner cylinder 464 has a vent 467 opened substantially vertically downward, and is formed in a hollow cylindrical shape.

The outer cylinder 468 is formed in a cylindrical shape, and is disposed so as to enclose the inner cylinder 464 . Moreover, the water supply port 472 for supplying water to the water storage part 470 mentioned later is provided in the side wall 468a of the outer cylinder 468. As shown in FIG. Furthermore, the water supply port 472 is connected to the water supply and drain pipe 439 via the first water passage 444a. It should be noted that the water supply port 472 is provided vertically above the upper surface of the water storage unit 470 (the surface of the maximum water level that the water storage unit 470 can store: the water surface 480 ).

The water receiving portion 471 is provided over the entire bottom of the liquid miniaturization device 460 . For example, when an abnormality occurs in the device and water leaks, the water receiving part 471 can temporarily store the water leaked from the device.

Next, the internal structure of the liquid miniaturization device 460 will be described.

As shown in FIG. 35 , the liquid miniaturization device 460 internally has a suction communication air passage 465 , an inner cylinder air passage 466 , an outer cylinder air passage 469 , a water storage unit 470 , a liquid miniaturization unit 477 and a water receiving unit 471 .

The suction communication air passage 465 is a duct-shaped air passage connecting the suction port 462 and the inner cylinder 464 (inner cylinder air passage 466 ), and is configured so that the air sucked in from the suction port 462 reaches the inner cylinder through the suction communication air passage 465 . 464 interior.

The inner cylinder air passage 466 is an air passage provided inside the inner cylinder 464, and is connected to the outer cylinder air passage 469 provided on the outer side of the inner cylinder 464 through the opening (vent 467) provided at the lower end of the inner cylinder 464 (by The wind path represented by the dotted arrow in Figure 35) communicates. In the inner cylinder air passage 466, a liquid miniaturization unit 477 is arranged in the air passage.

The outer cylinder air passage 469 is an air passage formed between the inner cylinder 464 and the outer cylinder 468 and communicates with the air outlet 463 .

The water storage unit 470 is provided at the lower portion of the liquid miniaturization device 460 (the lower portion of the inner tube 464 ), and stores water. The water storage part 470 is formed substantially in the shape of a mortar, and the side wall of the water storage part 470 is connected and integrated with the lower end of the outer cylinder 468 . Furthermore, the water storage unit 470 is configured to supply water from a water supply port 472 provided on the side wall 468 a of the outer cylinder 468 and to discharge water from a water discharge port 473 provided on the bottom surface of the water storage unit 470 . Here, like the water supply port 472 , the drain port 473 is connected to the water supply and drain pipe 439 via another first water passage 444 a. It should be noted that the drain port 473 is preferably disposed at the lowest position on the bottom surface of the water storage portion 470 .

The liquid miniaturization unit 477 is a main part of the liquid miniaturization device 460, and is a place where water is miniaturized. Specifically, the liquid miniaturization unit 477 has a pumping pipe (dipping pipe) 474 , a rotating plate 475 , and a motor 476 . In addition, the liquid miniaturization unit 477 is provided inside the inner cylinder 464 , that is, at a position covered by the inner cylinder 464 .

The pumping pipe 474 draws water from the water storage part 470 by rotating. In addition, the pumping pipe 474 is formed in the shape of a hollow truncated cone, and the tip on the side with a smaller diameter is located below the water surface 480 of the water stored in the water storage part 470 .

The rotating plate 475 is formed in a doughnut-shaped disc shape with an open center, and is arranged around the side of the water raising pipe 474 with a larger diameter, in other words, the upper part of the water raising pipe 474 . A plurality of openings (not shown) are provided on the side surface of the larger diameter side of the water pumping pipe 474 , and the pumped water is supplied to the rotary plate 475 through the openings. And, the rotating plate 475 discharges the water sucked by the water pumping pipe 474 toward the direction of the rotating surface.

The motor 476 rotates the water pumping pipe 474 and the rotary plate 475 .

The water receiving part 471 is provided on the entire bottom surface of the liquid miniaturization device 460 below the water storage part 470 in the vertical direction.

Next, the operation of the liquid miniaturization device 460 will be described using FIG. 35 .

First, the humidification operation of the liquid miniaturization device 460 will be briefly described. First, water is supplied from the water supply port 472 to the water storage part 470 by a water supply and drainage pipe 439 connected to a water supply facility not shown, and the water is stored in the water storage part 470 . Then, the air sucked into the liquid miniaturization device 460 from the suction port 462 (the supply air flow 403 after heat exchange or the supply air flow 403 heated by the dehumidification device 430 ) sequentially passes through the suction communication air passage 465 and the inner cylinder air passage 466. , the liquid miniaturization part 477, the outer cylinder air path 469, and blow out from the blower port 463 toward the outside (for example, indoor). At this time, the water droplets generated by the liquid miniaturization unit 477 come into contact with the air passing through the inner tube air passage 466, and the air can be humidified by vaporizing the water droplets. In addition, the water stored in the water storage unit 470 is discharged from the water outlet 473 to the outside of the device after a predetermined time has elapsed.

Next, the humidification operation of the liquid miniaturization device 460 , that is, how the liquid miniaturization device 460 humidifies the air will be described in more detail.

The air taken into the inner cylinder of the inner cylinder air passage 466 from the suction port 462 through the suction communication air passage 465 passes through the liquid miniaturization part 477 . When the water pumping pipe 474 and the rotary plate 475 are rotated by the operation of the motor 476 , the water stored in the water storage part 470 rises along the inner wall surface of the water pumping pipe 474 by the rotation. The raised water is pulled along the surface of the rotating plate 475 and discharged as fine water droplets from the outer peripheral end of the rotating plate 475 toward the direction of the rotating surface. The discharged water droplets collide with the inner wall surface of the inner cylinder 464 and are broken into finer water droplets. The water droplets discharged from the rotary plate 475 and the water droplets collided with the inner wall surface of the inner cylinder 464 and broken up come into contact with the air passing through the inner cylinder 464, and the water droplets are vaporized to humidify the air. It should be noted that although some of the generated water droplets are not vaporized, since the liquid miniaturization part 477 is arranged so as to be covered by the inner cylinder 464, the unvaporized water droplets adhere to the inner surface of the inner cylinder 464 and flow to the water storage. Section 470 falls.

Then, the air (humidified air) containing water droplets is blown out from the vent 467 provided at the lower end of the inner cylinder 464 toward the water storage part 470 provided below. Then, it flows toward the outer cylinder air passage 469 formed between the inner cylinder 464 and the outer cylinder 468 . Here, since the air passing through the outer cylinder air passage 469 is conveyed upward in the vertical direction, the air flowing downward in the inner cylinder air passage 466 faces the direction of conveyance.

At this time, the water droplets blown out from the vent 467 together with the air cannot follow the flow of the air due to inertia, but adhere to the water surface 480 of the water storage part 470 or the inner wall surface of the outer cylinder 468 . The greater the weight of the water droplets, the greater the effect, that is, the larger the diameter of the water droplets that are difficult to vaporize, the greater the effect, so that large water droplets can be separated from the flowing air.

Then, the air flowing into the outer cylinder air passage 469 from the inner cylinder air passage 466 through the vent 467 flows upward through the outer cylinder air passage 469 . Then, it is blown out from the outlet 463 to the outside. At this time, a part of the water drops falls toward the water storage portion 470 due to gravity, or adheres to the outer wall of the inner cylinder 464 or the inner wall of the outer cylinder 468 . Then, the water droplets adhering to the outer wall of the inner cylinder 464 or the inner wall of the outer cylinder 468 fall down toward the water storage portion 470 along the outer wall surface of the inner cylinder 464 or the inner wall surface of the outer cylinder 468 .

As described above, the liquid miniaturization device 460 can humidify the air (introduced supply air flow 403 ) through the liquid miniaturization unit 477 . That is to say, when the flow of the supply airflow 403 is in the C state, the liquid miniaturization device 460 humidifies the heat-exchanged supply airflow 403; on the other hand, when the flow of the supply airflow 403 is in the D state, the liquid micronization device 460 humidifies the feed gas stream 403 heated by the dehumidifier 430 .

As mentioned above, according to the heat exchange type ventilator 450 with a humidity control function of Embodiment 5-1, the following effects can be enjoyed.

(1) The supply air flow 403 led from the dehumidification device 430 to the air supply air duct 405 is supplied to the room by bypassing the liquid miniaturization device 460 in the dehumidification mode, and flows through the liquid miniaturization device 460 in the heating mode. Supply indoors. With this configuration, the supply air flow 403 introduced into the liquid miniaturization device 460 can be easily heated by switching the four-way valve 431a of the dehumidification device 430, and the humidification amount of the supply air flow 403 flowing through the liquid miniaturization device 460 can be increased. . That is, it is possible to provide the heat exchange type ventilator 450 with a humidity control function capable of improving the humidity control performance during dehumidification and humidification.

It should be noted that, it can also be said that the air supply airflow 403 derived from the dehumidification device 430 to the air supply air passage 405 is supplied to the room in the dehumidification mode without being humidified by the liquid miniaturization device 460, and in the heating mode It is humidified by the liquid miniaturization device 460 and supplied into the room.

(2) In the heat exchange type ventilator 450 with the humidity control function, each switching damper (switching damper 440, switching damper 441, switching damper 443) is arranged on the supply air path 405 after the heat exchange, so that The state (D state) in which the heat-exchanged supply airflow 403 is circulated through the dehumidifier 430 and introduced into the liquid miniaturization device 460, and the heat-exchanged supply airflow 403 can be finely divided into the liquid without circulating through the dehumidifier 430. The state (C-state) introduced by the device 460 is switched. With such a configuration, without heating the supply air flow 403 introduced into the liquid micronization device 460, the heat exchange type ventilator 450 with a humidity control function can be easily controlled so that the supply air flow 403 does not In the state of flowing to the dehumidifier 430, during humidification, the increase in the pressure loss caused by the dehumidifier 430 is suppressed, and an energy-saving operation can be realized.

(3) The conventional dehumidifier 1100 is configured to pass dehumidified air through the radiator 1106 in order to cool the radiator 1106 of the refrigeration cycle. In the radiator 1106, in addition to the energy absorbed by the heat absorber 1108, the energy used to circulate the refrigerant in the refrigeration cycle through the compressor 1105 is also discharged, so the dehumidified air passing through the radiator 1106 The temperature rises above the temperature of the air before dehumidification. As a result, when the dehumidification mechanism of the conventional dehumidification device 1100 is arranged in the air supply air path of the heat exchange type ventilator to perform dehumidification, the dehumidified air (air whose temperature has been raised) is generated as it is. The problem that the supply air is blown into the room and impairs the comfort of the room.

In contrast, in the heat exchange type ventilator 450 with a humidity control function, in the dehumidification mode, the exhaust air flow 402 introduced to the dehumidifier 430 is configured to be led out to the exhaust air passage 404 after passing through the radiator 432 . With this structure, the heat exchange type ventilator 450 with humidity control function can pass through the exhaust stream 402 from the heat exchange type ventilator 410 (in the summer when dehumidification is required, the exhaust stream 402 whose temperature is lower than the supply air stream 403 ) to obtain the energy required for cooling (discharging heat) of the radiator 432 in the dehumidifier 430, so that the temperature rise of the dehumidified air (supply airflow 403) can be suppressed. Even when the structure of the conventional dehumidification device 1100 is applied to a heat exchange type ventilator, it is possible to send a supply air flow in which a temperature rise caused by dehumidification is suppressed. That is, it is possible to provide the heat exchange type ventilator 450 with a humidity control function capable of sending a supply air flow whose temperature rise accompanying dehumidification is suppressed.

(4) In the heat exchange type ventilation device 450 with humidity control function, the four-way valve 431a is used to switch the flow direction of the refrigerant in the refrigerant cycle of the dehumidification device 430, so that the radiator 432 and the heat absorber 434 Function inversion. With such a configuration, dehumidification device 430 can be switched between a dehumidification mode capable of dehumidifying air introduced into the device, and a heating mode capable of heating air introduced into the device. That is to say, the heating of the supply air flow 403 can be realized by the dehumidification device 430, and there is no need to add a heating mechanism such as a heater inside the liquid miniaturization device 460, so the supply air flow introduced to the liquid miniaturization device 460 can be realized at low cost. 403 for heating.

(Embodiment 5-2)

The heat exchange type ventilator 450a with a humidity control function according to Embodiment 5-2 of the present invention has a water blowing unit 438 that blows water to the radiator 432 in the dehumidifier 430a, and is installed in the dehumidifier 430a. The difference from Embodiment 5-1 is that the supply air flow 403 after passing through the heat exchanger 435 is led out to the supply air passage without passing through the heat absorber 434 . The structure of the heat exchange type ventilator 450a with a humidity control function other than this is the same as the heat exchange type ventilator 450 with a humidity control function of Embodiment 5-1. Hereinafter, re-description of the contents described in Embodiment 5-1 will be appropriately omitted, and points different from Embodiment 5-1 will be mainly described.

A heat exchange type ventilator 450a with a humidity control function according to Embodiment 5-2 of the present invention will be described with reference to FIG. 36 . Fig. 36 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-2 of the present invention.

As shown in Figure 36, the dehumidifier 430a in the heat exchange type ventilator 450a with humidity control function is provided with: a water blowing part 438, which blows water to the radiator 432; The water blowing unit 438 supplies water and discharges excess water generated when blowing to the radiator 432 .

In addition, in the dehumidifier 430a, the radiator 432 constituting the refrigerant cycle is disposed in the exhaust air passage 404 as a whole, and other equipment (compressor 431, expander 433, heat absorber 434, heat exchanger 435 ) is arranged outside the exhaust air passage 404.

The water blowing unit 438 has a water nozzle, and sprays water from the water nozzle to the radiator 432 in the form of a mist in the exhaust air passage 404 . The sprayed water adheres to the surface of the radiation pipes constituting the radiator 432 and is vaporized by the heat of the radiator 432 . Then, the vaporized water is led out to the exhaust air passage 404 through the exhaust flow 402 flowing through the radiator 432, and is discharged outdoors as it is.

One end of the water supply and drain pipe 439 is connected to the water blowing unit 438 via an opening and closing unit such as a solenoid valve, and the other end is connected to a water supply facility and a drainage facility of a residential facility. Further, the water supply and drain pipe 439 supplies water to the water blowing unit 438 and discharges excess water generated when blowing to the radiator 432 .

In addition, the water supply and drainage pipe 439 is provided with a water channel switching unit 444 for switching between a first state in which water is introduced from the outside to the liquid miniaturization device 460 and a second state in which water is introduced from the outside to the dehumidifier 430a. state.

The water channel switching unit 444 is configured to communicate with the liquid miniaturization device 460 via the supply and drain pipe 439 (first water channel 444a) when the flow of the supply air flow is in the B state, and to communicate with the liquid miniaturization device 460 when the flow of the supply air flow is in the C state or D state. The water supply and drainage pipe 439 (second water passage 4444b) communicates with the dehumidifier 430a. That is, the water channel switching unit 444 performs humidification treatment on the heat-exchanged supply airflow 403 (state C, D state), and dehumidification treatment on the heat-exchanged supply airflow 403 (state B). Next, the flow of water in the water supply and drainage pipe 439 is switched.

Next, the flow of the airflow (exhaust airflow 402, supply airflow 403) in the dehumidifier 430a will be described.

The heat exchanger 435 in the dehumidification device 430a is configured to guide the first supply air flow 403a derived from the first flow channel 436 to the supply air channel 405 without passing through the radiator 432 in the dehumidification mode, and to guide the flow from the second The second supply air flow 403 b introduced by the flow path 437 is led out to the supply air path 405 without flowing through the radiator 432 .

On the other hand, like the dehumidifier 430 , the exhaust flow 402 introduced into the dehumidifier 430 a passes through the radiator 432 and then is led out to the exhaust air passage 404 after heat exchange in the heat exchange type ventilator 410 . Specifically, after the exhaust gas flow 402 introduced into the dehumidifier 430a passes through the radiator 432 in a state where water is blown by the water blowing unit 438, it is discharged to the heat-exchanged exhaust gas in the heat exchange type ventilator 410. The wind path 404 leads out and directly discharges to the outside. That is, in the present embodiment, the dehumidifier 430a is configured to cool the radiator 432 by the air heat of the exhaust flow 402 introduced from the heat exchange type ventilator 410 and the vaporization heat of the blown water.

As mentioned above, according to the heat exchange type ventilator 450a with a humidity control function of Embodiment 5-2, the following effects can be enjoyed.

(5) In the heat exchange type ventilator 450a with a humidity control function, the exhaust gas flow 402 introduced into the dehumidifier 430a is configured to pass through the radiator 432 in a state where water is blown by the water blowing part 438. , leading to the exhaust air duct 404. With this configuration, in the dehumidification mode, the heat of the air from the exhaust stream 402 of the heat exchange type ventilator 410 and the heat of vaporization of the blown water can be cooled by the radiator 432 in the dehumidifier 430a (exhaust heat). ) required energy, so the heat sink 432 can be effectively cooled. Therefore, the amount of dehumidification removed from the supply air flow 403 flowing through the dehumidification device 430a can be increased. That is, the heat exchange type ventilator 450a with a humidity control function capable of improving the humidity control performance at the time of dehumidification and humidification can be obtained.

(6) The heat exchange type ventilation device 450a with humidity control function can obtain the dehumidification device 430a through the air heat from the exhaust flow 402 of the heat exchange type ventilation device 410 and the vaporization heat of the water blown by the water blowing part 438 . Therefore, the radiator 432 can be effectively cooled, and the dehumidified air (supply airflow 403 ) can be blown into the room without flowing to the radiator 432 . That is, even when the structure of the conventional dehumidifier 1100 is applied to a heat exchange type ventilator, it is possible to send a supply air flow in which a temperature rise caused by dehumidification is suppressed.

(7) In the heat exchange type ventilator 450 a with a humidity control function, the water channel switching unit 444 can easily switch the water from the outside introduced into the liquid miniaturization device 460 for humidification into the dehumidifier 430 a. That is, in the case of supplying water to the dehumidifier 430a, the supply of water from the outside can be shared with the liquid miniaturization device 460, so that the water blowing unit 438 in the dehumidifier 430a can be realized at low cost. Blowing of water to the radiator 432 is performed.

(Embodiment 5-3)

The heat exchange type ventilator 450b with a humidity control function according to Embodiment 5-3 of the present invention is configured such that the supply air flow 403 after heat exchange by the heat exchange type ventilator 410a is successively miniaturized by the dehumidifier 430 and the liquid. The device 460 is different from Embodiment 5-1 in that it circulates and supplies to the room. The structure of the heat exchange type ventilator 450b with a humidity control function other than this is the same as the heat exchange type ventilator 450 with a humidity control function of Embodiment 5-1. Hereinafter, re-description of the contents described in Embodiment 5-1 will be appropriately omitted, and points different from Embodiment 5-1 will be mainly described.

A heat exchange type ventilator 450b with a humidity control function according to Embodiment 5-3 of the present invention will be described with reference to FIG. 37 . Fig. 37 is a schematic diagram showing the configuration of a heat exchange type ventilator with a humidity control function according to Embodiment 5-3 of the present invention.

As shown in Figure 37, in the heat exchange type ventilator 450b with humidity control function, the supply air flow 403 after heat exchange by the heat exchange type ventilator 410a circulates in the dehumidifier 430, and after the dehumidifier 430 circulates The supply gas flow 403 circulates through the liquid miniaturization device 460 . Then, the supply air flow 403 that has passed through the liquid miniaturization device 460 is supplied into the chamber. In addition, in the heat exchange type ventilator 450b with a humidity control function, by controlling the operation of the dehumidifier 430 and the operation of the liquid miniaturization device 460, each state corresponding to the A state to the D state (E state to D state) can be established. H state). Each status is explained below.

State E is to make the heat-exchanged air supply flow 403 flow through the dehumidification device 430 and the liquid miniaturization device 460 without dehumidification (dehumidification by the dehumidification device 430, humidification by the liquid miniaturization device 460) and flow to The state of indoor supply is equivalent to state A.

State F is to make the heat-exchanged supply air flow 403 undergo dehumidification in the dehumidification mode by the dehumidification device 430, and then circulate through the liquid miniaturization device 460 without undergoing humidification by the liquid miniaturization device 460 and supply it to the room. The state is equivalent to the B state.

State G is a state in which the heat-exchanged supply airflow 403 is circulated through the dehumidifier 430 without dehumidification and heating by the dehumidifier 430, and is humidified by the liquid miniaturization device 460 before being supplied to the room. in C state.

The H state is a state in which the heat-exchanged supply air flow 403 is heated in the heating mode by the dehumidifier 430 , then humidified by the liquid miniaturization device 460 and supplied into the room, and corresponds to the D state.

As described above, the heat exchange type ventilator 450b with a humidity control function is configured to supply the supply airflow 403 to the room while controlling the appropriate humidity by switching the flow of the supply airflow 403 from the E state to the H state.

As mentioned above, according to the heat exchange type ventilator 450b with a humidity control function of Embodiment 5-3, the following effects can be enjoyed.

(8) The air supply airflow 403 derived from the dehumidification device 430 to the air supply air duct 405 is supplied to the room without being humidified by the liquid miniaturization device 460 in the dehumidification mode, and is humidified by the liquid miniaturization device 460 in the heating mode. Supply indoors. Therefore, the same effect as that of (1) above can be enjoyed.

(9) In the heat exchange type ventilator 450b with a humidity control function, it is configured so that switching dampers (switching damper 441, switching damper 443) for each device are not provided in the air supply air passage 405 after heat exchange. Switching to each state (E state to G state) is realized. With such a configuration, it is possible to reduce the risk of troubles caused by each switching damper, and to reduce the cost of the device by reducing the number of components.

As mentioned above, although this invention was demonstrated based on embodiment, it is easy to guess that this invention is not limited to the said embodiment at all, and various improvement and deformation|transformation are possible in the range which does not deviate from the summary of this invention. For example, the numerical values listed in the above-mentioned embodiments are examples, and other numerical values can of course be adopted.

In the heat exchange type ventilator 450 with a humidity control function according to Embodiment 5-1, as the heat exchanger 435, a sensible heat type heat exchange element is used, but as a sensible heat type heat exchange element, it is preferable to configure a thermal The components of the first flow path 436 and the second flow path 437 of the exchange element 412 are waterproof (hydrophobic). As a member having water repellency (water repellency), resin members such as polypropylene and polystyrene are used, for example. In this way, the dew condensation water generated inside the heat exchange element 412 easily flows out of the heat exchange element 412, so that dehumidification can be performed without reducing the heat exchange efficiency of the heat exchanger 435 due to the dew condensation water.

In addition, in the heat exchange type ventilator 450 with a humidity control function according to Embodiment 5-1, at the time of humidification, by passing the supply air flow 403 to the dehumidifier 430 in the heating mode, the liquid introduced into the liquid miniaturization device 460 is The temperature of the air (heat-exchanged supply air stream 3 ) rises, but is not limited thereto. For example, when humidification is not required in winter, each switching damper may be controlled so that the air supply air 403 heated by the dehumidifier 430 is directly supplied to the room. In this way, warm air can be blown into the room, so the load on heating (air conditioning, floor heating) can also be reduced. In addition, if the airflow 403 heated by the dehumidification device 430 is ventilated during the drying process of the liquid miniaturization device 460, the drying time of the device can be shortened, and the generation of mold in the device can also be suppressed.

Industrial Applicability

The heat exchange type ventilator with a dehumidification function of the present invention can control the supply air flow whose temperature rise due to dehumidification is suppressed even when a dehumidifier combining a refrigeration cycle and a heat exchanger is applied. Therefore, it is useful as a heat exchange type ventilator capable of exchanging heat between indoors and outdoors.

Explanation of reference signs

1, 101, 201, 301, 401

2, 102, 202, 302, 402 exhaust flow

2a, 102a first exhaust flow

2b, 102b second exhaust flow

3, 103, 203, 303, 403 air supply

3a, 103a, 203a, 303a, 403a First air supply

3b, 103b, 203b, 303b, 403b Second supply air flow

4, 104, 204, 304, 404 exhaust air duct

5, 105, 205, 305, 405 air supply air path

10, 10a, 10b, 110, 110a, 110b, 210, 310, 410, 410a heat exchange type ventilation device

11, 111, 211, 311, 411 main shell

12, 112, 212, 312, 412 heat exchange elements

13, 113, 213, 313, 413 exhaust fan

14, 114, 214, 314, 414 Inner air ports

15, 115, 215, 315, 415 exhaust ports

16, 116, 216, 316, 416 Air supply fan

17, 117, 217, 317, 417 external air ports

18, 118, 218, 318, 418 air supply ports

30, 130, 230, 330, 430 dehumidification device

30a, 30b, 130a, 130b, 230a, 330a, 430a Dehumidifier

31, 131, 231, 331, 431 compressors

32, 32A, 132, 132A, 232, 332, 432 radiator

32a, 132a first radiator

32b, 132b second radiator

33, 33A, 133, 133A, 233, 333, 433 Expander

33a, 133a First expander

33b, 133b second expander

34, 134, 234, 334, 434 heat sink

35, 135, 235, 335, 435 heat exchanger

36, 136, 236, 336, 436 first flow path

37, 137, 237, 337, 437 Second flow path

38 auxiliary fan

40, 140, 240, 340, 440 switching damper

41, 141, 241, 341, 441 switching damper

143, 144, 145, 243, 247, 443 switching damper

42, 142, 242, 342, 442 branch damper

43 branch damper

44, 146, 245, 345, 445 First temperature sensor

45, 147, 246, 346, 446 Second temperature sensor

46 temperature and humidity sensor

50, 150, 250, 350 Heat exchange type ventilator with dehumidification function

50a, 150a, 250a, 350a Heat exchange type ventilator with dehumidification function

50b, 150b, 250b Heat exchange type ventilator with dehumidification function

50c, 150c, 250c heat exchange type ventilator with dehumidification function

50d, 150d, 250d heat exchange type ventilator with dehumidification function

450, 450a, 450b Heat exchange type ventilator with humidity control function

1100 dehumidification device

1101 Air intake

1102 main shell

1103 Dehumidification department

104 Air outlet

1105 compressor

1106 Radiator

1107 Expander

1108 heat sink

1109 First stream

1110 Second flow path

1111 heat exchanger

2101 Liquid miniaturization device

2102 Processing room

2103 Water storage department

2104 rotating body

2105 Porous bodies.

Claims (10)

1. A heat exchange type air interchanger with dehumidification function is characterized in that,

the heat exchange ventilator with a dehumidification function includes:

a heat exchange type ventilator that performs heat exchange between an exhaust air flow that flows through an exhaust air passage for discharging indoor air to the outside of a room and an intake air flow that flows through an intake air passage for supplying the outdoor air to the inside of the room; and

a dehumidification device that dehumidifies the supply air stream,

the dehumidifying apparatus includes: a refrigeration cycle configured to sequentially connect a compressor, a first radiator, a first expander, a second radiator different from the first radiator, a second expander different from the first expander, and a heat absorber; and a heat exchanger disposed between the heat absorber and the second radiator, and configured to exchange heat between air flowing through the first flow path and air flowing through the second flow path,

The dehumidifier is configured to introduce the heat-exchanged air supply flow from the air supply air passage and to introduce the exhaust flow from the exhaust air passage,

a part of the air supply flow introduced into the dehumidifier is guided to the air supply passage after passing through the heat absorber, the first flow passage, and the second radiator in this order,

the other part of the air supply flow introduced into the dehumidifier is guided to the air supply passage after passing through the second flow path and the second radiator in this order,

the exhaust air flow introduced into the dehumidifier is guided to the exhaust air passage after passing through the first radiator.

2. The heat exchange type ventilator with a dehumidifying function according to claim 1,

the exhaust stream directed to the dehumidification device is the exhaust stream prior to heat exchange.

3. The heat exchange type ventilator with a dehumidifying function according to claim 1,

the exhaust flow introduced into the dehumidifier is an exhaust flow obtained by merging the exhaust flow before heat exchange with the exhaust flow after heat exchange.

4. The heat exchange type ventilator with a dehumidifying function according to any one of claims 1 to 3,

An air flow rate adjustment unit that increases or decreases the air flowing through the second flow path is further provided between the second flow path and the radiator.

5. A heat exchange type ventilator with a humidity control function,

the heat exchange ventilator with humidity control function comprises:

a heat exchange type ventilator that exchanges heat between an exhaust air flow that flows through an exhaust air passage for discharging indoor air to the outside and an intake air flow that flows through an intake air passage for supplying the outdoor air to the inside of the room; and

a dehumidification device that dehumidifies the supply air stream,

the dehumidifying apparatus includes: a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber; and a heat exchanger disposed between the heat absorber and the radiator, and configured to exchange heat between air flowing through the first flow path and air flowing through the second flow path,

the dehumidifier is configured to introduce the heat-exchanged air supply flow from the air supply air passage and to introduce the exhaust flow from the exhaust air passage,

a part of the air supply flow introduced into the dehumidifier is guided to the air supply passage so as not to flow through the radiator after passing through the heat absorber and the first flow passage in this order,

The other part of the air supply flow introduced into the dehumidifier is guided out to the air supply flow path so as not to flow through the radiator after passing through the second flow path,

the exhaust air flow introduced into the dehumidifier is guided out to the exhaust air passage after passing through the radiator,

the dehumidifier further comprises a water blowing part for blowing water to the radiator,

the exhaust air flow introduced into the dehumidifier is guided to the exhaust air passage after passing through the radiator in a state where the water is blown by the water blower,

the heat exchange type ventilator with a humidity control function further includes:

a liquid atomizing device configured to introduce the heat-exchanged supply air flow from the supply air passage and humidify the introduced supply air flow; and

a water passage switching unit that can be switched between a first state in which water is introduced from outside into the liquid atomizing device and a second state in which water is introduced from outside into the dehumidifying device,

the water path switching unit switches to the first state during humidification and to the second state during dehumidification.

6. The heat exchange type ventilator with a humidifying function according to claim 5,

The heat exchange ventilator with a humidity control function further includes a blower device that takes in the outdoor air and, after circulating the air through the heat sink, discharges the air to the exhaust air passage after heat exchange.

7. The heat exchange type ventilator with a humidifying function according to claim 5 or 6,

the temperature of the supply air flow supplied from the dehumidifier into the room during dehumidification is adjusted by controlling a ratio of an air volume of a part of the supply air flow to an air volume of another part of the supply air flow.

8. A heat exchange type ventilator with dehumidification function is characterized in that,

the heat exchange ventilator with a dehumidification function includes:

a heat exchange type ventilator that exchanges heat between an exhaust air flow that flows through an exhaust air passage for discharging indoor air to the outside and an intake air flow that flows through an intake air passage for supplying the outdoor air to the inside of the room; and

a dehumidification device that dehumidifies the supply air stream,

the dehumidifying apparatus includes: a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber; a heat exchanger disposed between the heat absorber and the radiator, and configured to exchange heat between air flowing through the first flow path and air flowing through the second flow path; and a water introduction unit for introducing at least water condensed in the heat absorber to the radiator,

The dehumidifier is configured to introduce the heat-exchanged air supply flow from the air supply air passage and to introduce the exhaust flow from the exhaust air passage,

a part of the air supply flow introduced into the dehumidifier is guided to the air supply passage while sequentially flowing through the heat absorber and the first flow passage,

the other part of the air supply flow introduced into the dehumidifier flows through the second flow path and is led out to the air supply duct,

the radiator is cooled by the water introduced from the water introduction part,

the exhaust air flow introduced into the dehumidifier is guided to the exhaust air passage while flowing through the radiator cooled by the water introduced from the water introduction portion,

the heat sink has: a first region that is disposed in the exhaust airflow passage and through which the exhaust airflow flows; and a second region connected to the first region, disposed in the air supply passage, and through which the air supply flow flows,

the air supply flow dehumidified by the dehumidifier is guided to the air supply flow passage while flowing through the second region of the radiator cooled by the water introduced from the water introduction portion,

the exhaust air flow introduced into the dehumidifier is guided to the exhaust air passage while flowing through the first region where the water introduced from the water introduction part is cooled by the second region.

9. The heat exchange type ventilator with a dehumidifying function according to claim 8,

the water introduction unit is configured to collect and introduce water condensed in the heat absorber and water condensed in the heat exchanger to the radiator.

10. The heat exchange type ventilator with a dehumidifying function according to claim 8 or 9,

the temperature of the air supply flow supplied from the dehumidifier into the room is adjusted by controlling the ratio of the air volume of one part of the air supply flow to the air volume of the other part of the air supply flow.

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