JP6653428B1 - Heat exchange ventilator with dehumidification function - Google Patents

Abstract

Provided is a heat exchange type ventilator with a dehumidification function capable of blowing a supply air flow in which a rise in temperature caused by dehumidification is suppressed. A heat exchange ventilator with a dehumidifying function exchanges heat between an exhaust flow flowing through an exhaust air passage and an air supply flow flowing through an air supply passage. And a dehumidifier 30 for dehumidifying the supply air flow 3. The dehumidifier 30 exchanges heat between the refrigeration cycle including the compressor 31, the radiator 32, the expander 33, and the heat absorber 34, and the air flowing through the first flow path 36 and the air flowing through the second flow path 37. The heat exchanger 35 is included. The first air supply flow 3a introduced into the dehumidifier 30 flows out of the heat absorber 34, the first flow path 36, and the radiator 32 in this order, and is then led out to the air supply air passage 5. The second air supply flow 3 b introduced into the dehumidifier 30 flows out in the order of the second flow path 37 and the radiator 32, and is then led out to the air supply air passage 5. The exhaust gas flow 2 introduced into the dehumidifier 30 flows through the radiator 32 and is then led out to the exhaust air passage 4. [Selection diagram] FIG.

Description

  The present invention relates to a heat exchange type ventilator with a dehumidifying function used for a living space or the like.

  2. Description of the Related Art Conventionally, as a device capable of ventilation without impairing the effect of cooling or heating, a heat exchange ventilator that exchanges heat between a supply air flow and an exhaust air flow during ventilation is known.

  In recent years, due to the effects of global warming and improved airtightness of houses, indoor exhaust heat and moisture are insufficient, particularly in summer, and indoors become hot and humid, which impairs indoor comfort for residents. It is feared that it will be. In order to improve indoor comfort in summer, it is particularly important to reduce indoor humidity. Therefore, a heat exchange ventilator with a dehumidifying function for performing heat exchange ventilation while adjusting indoor humidity is required. For this reason, we are developing a heat exchange ventilator using a dehumidifier that combines a refrigeration cycle and a heat exchanger as a heat exchange ventilator with a dehumidifying function. 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.

  As shown in FIG. 9, in the conventional dehumidifier 100, the air (air X, air Y) sucked into the main body case 102 from the air inlet 101 passes through the dehumidifier 103, and then passes through the air outlet 104. It is configured to blow out the main body case 102. The dehumidifying unit 103 is disposed between the compressor 105, the radiator 106, the expander 107, and the heat absorber 108 in this order, and between the heat absorber 108 and the heat radiator 106. And a heat exchanger 111 for exchanging heat between the air and the air Y flowing through the second flow path 110.

  Then, the air X flowing through the first flow path 109 is cooled by the heat absorber 108 and dew condensation occurs. The dew water generated by the occurrence of the dew is collected. On the other hand, the air Y flowing through the second flow path 110 exchanges heat with the air X cooled by the heat absorber 108 and is cooled to cause dew condensation. The dew water generated by the occurrence of the dew is also collected. Thereby, in the conventional dehumidifier 100, high dehumidification performance is secured.

International Publication No. WO 2016/031139

  However, the conventional dehumidifier 100 is configured to pass dehumidified air through the radiator 106 in order to cool the radiator 106 of the refrigeration cycle. In the radiator 106, in addition to the energy absorbed by the heat absorber 108, the energy for circulating the refrigerant in the refrigeration cycle is exhausted by the compressor 105, so that the temperature of the dehumidified air passing through the radiator 106 Will rise above the temperature of the air before dehumidification. As a result, when the dehumidifying mechanism of the conventional dehumidifying device 100 is disposed in the air supply passage of the heat exchange type ventilator to perform dehumidification, the air after dehumidification (air with increased temperature) is directly blown into the room as an air supply flow. This causes a problem that the indoor comfort is impaired.

  The present invention has been made to solve the above-described problem, and provides a heat exchange type ventilator with a dehumidifying function capable of blowing a supply air flow in which a rise in temperature caused by dehumidification is suppressed.

  In order to achieve this object, a heat exchange type ventilator with a dehumidifying function according to the present invention is configured to supply an exhaust air flowing through an exhaust air passage for discharging indoor air to the outside and an outdoor air to the room. A heat exchange ventilator for exchanging heat with a supply airflow flowing through a supply airflow path for air supply, and a dehumidifier for dehumidifying the supply airflow. The dehumidifying device is disposed between the refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber, and disposed between the heat absorber and the radiator, and is configured to air and flow through the first flow path. A heat exchanger for exchanging heat with flowing air. The dehumidifier is configured such that the supply air flow after heat exchange is introduced from the supply air passage and the exhaust flow is introduced from the exhaust air passage. A part of the supply airflow introduced into the dehumidifier is passed through the heat absorber, the first flow path of the heat exchanger, and the radiator in that order, then is led out to the supply airflow path, and another part of the supply airflow introduced into the dehumidifier. Flows through the second flow path of the heat exchanger and the radiator in this order, and is then led out to the air supply passage. The exhaust flow introduced into the dehumidifying device is characterized in that it flows out of the radiator and is then led out to the exhaust air path.

  ADVANTAGE OF THE INVENTION According to this invention, the heat exchange type ventilation apparatus with a dehumidification function which can send the supply airflow which suppressed the temperature rise which arises with dehumidification can be provided.

FIG. 1 is a schematic diagram showing an installation state in a house of a heat exchange ventilator according to a premise of the present invention. FIG. 2 is a schematic diagram illustrating a configuration of a heat exchange ventilator according to a premise of the present invention. FIG. 3 is a schematic diagram illustrating a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 1 of the present invention. FIG. 4 is a schematic diagram showing a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 2 of the present invention. FIG. 5 is a schematic diagram showing a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 3 of the present invention. FIG. 6 is a schematic diagram illustrating a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 4 of the present invention. FIG. 7 is a Mollier chart of the heat exchange type ventilator with a dehumidifying function according to Embodiment 4 of the present invention during a dehumidifying operation. FIG. 8 is a schematic diagram showing a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 5 of the present invention. FIG. 9 is a schematic sectional view showing a configuration of a conventional dehumidifying device.

  The heat exchange ventilator with a dehumidifying function according to the present invention has an exhaust flow that circulates through an exhaust air path for discharging indoor air to the outside and a supply air path that supplies outdoor air to the room. A heat exchange ventilator for exchanging heat with the supplied air flow, and a dehumidifier for dehumidifying the supplied air flow. The dehumidifying device is disposed between the refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber, and disposed between the heat absorber and the radiator, and is configured to air and flow through the first flow path. A heat exchanger for exchanging heat with flowing air. The dehumidifier is configured such that the supply air flow after heat exchange is introduced from the supply air passage and the exhaust flow is introduced from the exhaust air passage. A part of the supply airflow introduced into the dehumidifier is passed through the heat absorber, the first flow path of the heat exchanger, and the radiator in that order, then is led out to the supply airflow path, and another part of the supply airflow introduced into the dehumidifier. Flows through the second flow path of the heat exchanger and the radiator in this order, and is then led out to the air supply passage. The exhaust flow introduced into the dehumidifying device is characterized in that it flows out of the radiator and is then led out to the exhaust air path.

  According to such a configuration, energy required for cooling (exhaust heat) of the radiator in the dehumidifier is converted into an exhaust flow from the heat exchange type ventilator (an exhaust flow having a lower temperature than a supply air flow in summer when dehumidification is required). Therefore, it is possible to suppress an increase in the temperature of the air (air supply flow) after dehumidification. As a result, even when a dehumidifier combining a refrigeration cycle and a heat exchanger is applied, it is possible to blow a supply air flow in which a rise in temperature caused by dehumidification is suppressed. That is, it is possible to provide a heat exchange type ventilator with a dehumidifying function capable of blowing a supply air flow in which a rise in temperature caused by dehumidification is suppressed.

  Further, the exhaust gas introduced into the dehumidifier may be an exhaust gas before heat exchange.

  According to such a configuration, since the exhaust flow before heat exchange having a lower temperature than the exhaust flow after heat exchange is used, the radiator can be cooled more effectively, so that the air (supply air flow) after the dehumidification is removed. Temperature rise can be further suppressed.

  Further, the exhaust stream introduced into the dehumidifier may be an exhaust stream obtained by combining the exhaust stream before the heat exchange and the exhaust stream after the heat exchange.

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

  In the heat exchange ventilator with a dehumidifying function according to the present invention, the radiator has a first radiator and a second radiator different from the first radiator, and the expander is a first expander. And a second expander different from the first expander. The refrigeration cycle is configured by connecting a compressor, a first radiator, a first expander, a second radiator, a second expander, and a heat absorber in this order. The heat exchanger is disposed between the heat absorber and the second radiator. A part of the supply airflow introduced into the dehumidifying device flows through the heat absorber, the first flow path of the heat exchanger, and the second radiator in this order, and is then led out to the air supply passage. The other part of the supply air flow introduced into the dehumidifier flows out in the order of the second flow path of the heat exchanger and the second radiator, and is then led out to the supply air passage. The exhaust gas flow introduced into the dehumidifying device may be configured to be guided to the exhaust air passage after flowing through the first radiator.

  According to such a configuration, the refrigerant in the refrigeration cycle (the refrigerant introduced from the first radiator cooled by the exhaust stream) is depressurized by the first expander, so that the temperature of the refrigerant introduced into the second radiator is reduced. Can be made lower than the temperature of the refrigerant introduced into the first radiator, so that the temperature rise of the supply airflow when the heat exchange between the air supply flow and the second radiator can be suppressed. That is, it is possible to provide a heat exchange type ventilator with a dehumidifying function capable of blowing a supply air flow in which a rise in temperature caused by dehumidification is suppressed.

  In addition, a configuration may be provided that includes an air flow rate adjusting unit that increases and decreases the air flowing through the second flow path between the second flow path and the second radiator of the heat exchanger.

  According to such a configuration, the ratio of the airflow amount of the airflow flowing through the first flow passage to the airflow amount of the airflow flowing through the second flow passage can be made variable. For this reason, by making the airflow of the airflow flowing through the first flow passage larger than the airflow of the airflow flowing through the second flow passage, it is possible to effectively lower the temperature of the air flowing through the second radiator, The dehumidifying effect can be enhanced.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention. In all the drawings, the same portions are denoted by the same reference numerals, and description thereof is omitted. Further, details of each part which is not directly related to the present invention are omitted in each drawing in order to avoid duplication.

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

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

  In FIG. 1, a heat exchange type ventilation device 10 is installed inside a house 1. The heat exchange type ventilation device 10 is a device that ventilates while exchanging heat between indoor air and outdoor air.

  As shown in FIG. 1, the exhaust stream 2 is discharged outside through a heat exchange type ventilation device 10 as indicated by a black arrow. The exhaust flow 2 is a flow of air discharged from indoors to outdoors. The supply air flow 3 is introduced into the room through the heat exchange type ventilation device 10 as indicated by the white arrow. The supply air flow 3 is a flow of air taken in from indoors to outdoors. For example, in winter in Japan, the exhaust stream 2 may be at 20 to 25 ° C., while the supply stream 3 may be below freezing. The heat exchange type ventilator 10 performs ventilation and transmits heat of the exhaust flow 2 to the supply air flow 3 at the time of the ventilation, thereby suppressing unnecessary heat release.

  As shown in FIG. 2, the heat exchange ventilator 10 includes a main body case 11, a heat exchange element 12, an exhaust fan 13, an inside air port 14, an exhaust port 15, an air supply fan 16, an outside air port 17, an air supply port 18, and an exhaust port. An air path 4 and an air supply path 5 are provided. The main body case 11 is an outer frame of the heat exchange type ventilation device 10. On the outer periphery of the main body case 11, an inside air port 14, an exhaust port 15, an outside air port 17, and an air supply port 18 are formed. The inside air port 14 is a suction port that sucks the exhaust gas flow 2 into the heat exchange type ventilator 10. The exhaust port 15 is an outlet that discharges the exhaust stream 2 from the heat exchange ventilator 10 to the outside. The outside air port 17 is a suction port that sucks the supply air flow 3 into the heat exchange ventilator 10. The air supply port 18 is a discharge port that discharges the air supply flow 3 from the heat exchange ventilator 10 to the room.

  Inside the body case 11, a heat exchange element 12, an exhaust fan 13, and an air supply fan 16 are mounted. An exhaust air passage 4 and an air supply air passage 5 are formed inside the main body case 11. The heat exchange element 12 is a member for performing heat exchange (sensible heat and latent heat) between the exhaust airflow 2 flowing through the exhaust airflow path 4 and the supply airflow 3 flowing through the air supply airflow path 5. The exhaust fan 13 is a blower for sucking the exhaust stream 2 from the inside air port 14 and discharging the exhaust stream 2 from the exhaust port 15. The air supply fan 16 is a blower for sucking the air supply flow 3 from the outside air port 17 and discharging it from the air supply port 18. The exhaust air path 4 is an air path that connects the inside air port 14 and the exhaust port 15. The air supply path 5 is an air path that connects the outside air port 17 and the air supply port 18. The exhaust flow 2 sucked by the exhaust fan 13 passes through the heat exchange element 12 in the exhaust air passage 4 and the exhaust fan 13 and is discharged from the exhaust port 15 to the outside. The air supply flow 3 sucked by the air supply fan 16 is supplied to the room from the air supply port 18 via the heat exchange element 12 and the air supply fan 16 in the air supply air passage 5.

  When performing heat exchange ventilation, the heat exchange type ventilator 10 operates the exhaust fan 13 and the air supply fan 16 of the heat exchange element 12, and the exhaust flow 2 flowing through the exhaust air passage 4 in the heat exchange element 12. In addition, heat exchange is performed with the supply air flow 3 flowing through the supply air passage 5. Thus, when performing ventilation, the heat exchange type ventilator 10 transmits the heat of the exhaust stream 2 released outside to the supply air stream 3 that takes in the room, suppresses unnecessary release of heat, and reduces the heat inside the room. Collect. As a result, in the winter season, when ventilation is performed, the indoor temperature can be prevented from lowering by the air having a low outdoor temperature. On the other hand, in the summer season, when performing ventilation, the indoor temperature rise can be suppressed by air having a high outdoor temperature.

(Embodiment 1)
Next, a heat exchange type ventilator with a dehumidifying function according to the first embodiment will be described with reference to FIG. FIG. 3 is a schematic diagram illustrating a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 1 of the present invention. In each of the schematic diagrams after FIG. 3, the exhaust air path 4 and the supply air path 5 are represented as the exhaust flow 2 and the supply air flow 3 (black arrows) in the heat exchange ventilator 10. I have.

  As shown in FIG. 3, the heat exchange ventilator 50 with a dehumidifying function according to the first embodiment includes a dehumidifier 30 as a means for providing a dehumidifying function to the heat exchange ventilator 10 according to the premise. Are connected.

  The dehumidifier 30 is a unit for dehumidifying the supply airflow 3 after heat exchange in the heat exchange 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. The refrigeration cycle of the present embodiment is configured by annularly connecting the compressor 31, the radiator 32, the expander 33, and the heat absorber 34 in this order. In the refrigeration cycle, for example, an alternative chlorofluorocarbon (HFC134a) is used as a refrigerant. In addition, a copper tube is often used for connecting the components constituting the refrigeration cycle, and is connected by a welding method.

  The compressor 31 is a device that compresses a low-temperature and low-pressure refrigerant gas (working medium gas) in a refrigeration cycle and increases the pressure to 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 that releases heat to the outside (outside the refrigeration cycle) by exchanging heat between the refrigerant gas and the air (exhaust flow 2, supply air flow 3), which have been heated and pressurized by the compressor 31. It is. At this time, the refrigerant gas is condensed and liquefied under high pressure. In the radiator 32, the temperature of the introduced refrigerant gas (about 45 ° C.) is higher than the temperature of the air. Therefore, when heat is exchanged, the temperature of the air is raised and the refrigerant gas is cooled. The radiator 32 is also called a condenser.

  The expander 33 is a device that decompresses the high-pressure refrigerant liquefied by the radiator 32 to obtain the original low-temperature, low-pressure liquid. The expander 33 is also called an expansion valve.

  The heat absorber 34 is a device in which the refrigerant flowing through the expander 33 takes heat from the air to evaporate, and converts the liquid refrigerant into a low-temperature / low-pressure refrigerant gas. In the heat absorber 34, the temperature of the introduced refrigerant is lower than the temperature of the air. Therefore, when heat is exchanged, the air is cooled and the temperature of the refrigerant is increased. The heat absorber 34 is also called an evaporator.

  The heat exchanger 35 is a heat exchanger provided with a sensible heat type heat exchange element. The heat exchanger 35 is disposed in a space between the heat absorber 34 and the radiator 32, similarly to the heat exchanger 111 (see FIG. 9) in the conventional dehumidifier 100. The heat exchanger 35 includes 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 orthogonal to the first flow path 36. The first flow path 36 is a flow path that leads 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 ventilator 10 to the radiator 32. Then, 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 air flow (exhaust flow 2, supply air flow 3) between the heat exchange ventilator 10 and the dehumidifier 30 will be described with reference to FIG. In the following description, the air flow (exhaust air flow 2, supply air flow 3) or the air passage (exhaust air passage 4, air supply air passage 5) after the heat exchange passes through the heat exchange element 12 in the heat exchange ventilator 10. The air flow or the air path before the heat exchange indicates the air flow or the air path before passing through the heat exchange element 12.

  As shown in FIG. 3, in the heat exchange type ventilation device 10, a switching damper 40 is installed in the exhaust air passage 4 after heat exchange, and a switching damper 41 is installed in the supply air passage 5 after heat exchange. The switching damper 40 is a damper for switching between a state in which the exhaust airflow 2 flowing through the exhaust airflow path 4 flows outside and a state in which the exhaust airflow 2 flowing through the exhaust airflow path 4 flows through the dehumidifier 30. The switching damper 41 is a damper for switching between a state in which the supply airflow 3 flowing through the supply airflow path 5 flows indoors and a state in which the supply airflow 3 flowing through the supply airflow path 5 flows to the dehumidifier 30.

  In the heat exchange type ventilator 50 with the dehumidification function, the air flow flows to the dehumidification device 30 by each switching damper, so that the supply air flow 3 after the heat exchange is dehumidified. Details of the dehumidification will be described later. In addition, in a winter season or the like in which dehumidification is not required, the airflow does not flow to the dehumidifier 30 by each switching damper, thereby suppressing an increase in pressure loss due to the dehumidifier 30 and providing a heat with a dehumidifier function. As the exchange-type ventilation device 50, operation with energy saving can be realized throughout the year.

  As shown in FIG. 3, the dehumidifier 30 has a branch damper that divides the supply air flow 3 after the heat exchange introduced therein into two air flows (a first air supply flow 3 a and a second air supply flow 3 b). 42 are provided. The first supply airflow 3a is an airflow introduced to the heat absorber 34, and the second supply airflow 3b is an airflow introduced to the heat exchanger 35. The branch damper 42 divides the supply air flow 3 such that the amount of air flowing through the second supply air flow 3b is smaller than that of the first supply air flow 3a. Here, the first air supply flow 3a corresponds to “a part of the air supply flow introduced into the dehumidifier”, and the second air supply flow 3b corresponds to the “other air supply flow introduced into the dehumidifier”. Part ".

  In the dehumidifying device 30, the first supply airflow 3a of the divided supply airflows 3 flows through the heat absorber 34, the first flow path 36 of the heat exchanger 35, and the radiator 32 in this order, and then flows through the heat exchange ventilator 10. It is led to the supply air passage 5 after the heat exchange. On the other hand, the second supply airflow 3b flows through the second flow path 37 of the heat exchanger 35 and the radiator 32 in this order, and is then led out to the supply airflow path 5 after the heat exchange. In the present embodiment, the dehumidifier 30 combines the first supply airflow 3a flowing through the radiator 32 and the second supply airflow 3b flowing through the radiator 32, and then supplies the air supply passage 5 after the heat exchange. Is derived.

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

  Next, the dehumidifying operation of the heat exchange ventilator 50 with the dehumidifying function according to the first embodiment will be described.

  First, the exhaust fan 13 and the air supply fan 16 are driven by operating the heat exchange ventilator 50 with the dehumidifying function, and the exhaust flow 2 flowing through the exhaust air passage 4 is provided inside the heat exchange ventilator 10. And the supply air flow 3 flowing through the supply air passage 5 is generated.

  For example, in summer, the exhaust stream 2 is indoor air conditioned to a comfortable temperature and humidity by an air conditioner or the like, and the supply stream 3 is hot and humid outdoor air.

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

  Next, the supply air flow 3 after the heat exchange is introduced into the dehumidifier 30 to be dehumidified. Specifically, the first supply airflow 3 a of the supply airflow 3 introduced into the dehumidifier 30 is cooled by the heat absorber 34. As a result, the temperature of the first supply air flow 3a becomes equal to or lower than the dew point temperature, and the first supply air flow 3a condenses, so that the moisture of the first supply air flow 3a is removed. That is, by flowing through the heat absorber 34, dehumidification (second dehumidification) of the first air supply flow 3a is performed.

  In addition, the remaining second supply airflow 3 b of the supply airflow 3 introduced into the dehumidifier 30 flows into the second flow passage 37 of the heat exchanger 35 and is cooled by the heat absorber 34 in the first flow passage 36. The heat is exchanged with the first supply air flow 3a. As a result, the second air supply flow 3b in the second flow path 37 is cooled and condensed, so that the water in the second air supply flow 3b is removed. That is, by performing sensible heat exchange in the heat exchanger 35, dehumidification (third dehumidification) of the second supply airflow 3b is performed.

  In other words, the heat exchange type ventilator 50 with the dehumidification function can perform outdoor high temperature and high humidity by dehumidification (first dehumidification to third dehumidification) by the heat exchange type ventilator 10, the heat absorber 34, and the heat exchanger 35. Moisture is removed from the air supply stream 3 to ensure a necessary amount of dehumidification.

  Further, the dehumidifier 30 in the heat exchange ventilator 50 with a dehumidification function introduces the exhaust flow 2 from the exhaust air passage 4 of the heat exchange ventilator 10, and the introduced exhaust flow 2 flows through the radiator 32. It has become. In the radiator 32, the introduced exhaust stream 2 exhausts heat corresponding to energy absorbed in the heat absorber 34 and energy for circulating the refrigerant in the refrigeration cycle in the compressor 31. Exhaust flow 2 which has taken heat from 32 is led out to exhaust air passage 4 and discharged as it is outdoors. That is, the radiator 32 is cooled by the introduced exhaust gas flow 2. As a result, the temperature rise of the supply air flow 3 (the first supply air flow 3a and the second supply air flow 3b) caused by flowing through the radiator 32 is suppressed.

  According to the heat exchange type ventilator 50 with the dehumidifying function according to the first embodiment, the energy required for cooling (exhausting heat) of the radiator 32 in the dehumidifier 30 is transferred to the exhaust flow 2 from the heat exchange type ventilator 10. (In the summer season in which dehumidification is required, it can be obtained by the exhaust gas flow 2 having a lower temperature than the supply air flow 3.) Therefore, it is possible to suppress an increase in the temperature of the dehumidified air (the supply air flow 3). Even when the dehumidifier 30 in which the refrigeration cycle and the heat exchanger 35 are combined is applied, it is possible to blow the supply air flow in which the temperature rise caused by the dehumidification is suppressed. That is, the heat exchange ventilator 50 with the dehumidifying function can blow the supply air flow in which the temperature rise caused by the dehumidification is suppressed.

(Embodiment 2)
The heat exchange type ventilator 50a with the dehumidifying function according to the second embodiment of the present invention is configured such that a part of the exhaust stream 2 before heat exchange in the heat exchange type ventilator 10 is introduced into the dehumidifier 30. Embodiment 1 is different from Embodiment 1 in that Other configurations of the heat exchange ventilator with dehumidification function 50a are the same as those of the heat exchange ventilator with dehumidification function 50 according to the first embodiment. Hereinafter, the contents already described in the first embodiment will not be described again, and the points different from the first embodiment will be mainly described.

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

  As shown in FIG. 4, a branch damper 43 that divides the exhaust stream 2 before heat exchange into two air streams (a first exhaust stream 2 a and a second exhaust stream 2 b) is installed in the heat exchange ventilator 10. ing. The first exhaust stream 2a is an air stream introduced into the heat exchange element 12, and the second exhaust stream 2b is an air stream introduced into the dehumidifier 30. The branch damper 43 divides the exhaust stream 2 so that the amount of air flowing through the second exhaust stream 2b is smaller than that of the first exhaust stream 2a.

  In the heat exchange ventilator 10, the first exhaust gas flow 2a of the divided exhaust gas flow 2 is discharged outside through the exhaust air passage 4 (the exhaust port 15 in FIG. 2) after flowing through the heat exchange element 12. . On the other hand, the second exhaust flow 2b is led to the exhaust air passage 4 after heat exchange after flowing through the radiator 32 of the dehumidifier 30. In the present embodiment, the heat exchange type ventilator 10 combines the first exhaust flow 2a that has exchanged heat with the heat exchange element 12 and the second exhaust flow 2b that has passed through the radiator 32 of the dehumidifier 30. , And is configured to be discharged outside.

  According to the heat exchange type ventilator 50a with the dehumidifying function according to the second embodiment, in the summer, the exhaust gas flow 2 (before heat exchange) having a lower temperature than the exhaust gas flow 2 (first exhaust gas flow 2a) after heat exchange. Since the second exhaust stream 2b) is introduced into the dehumidifier 30, the radiator 32 can be cooled more effectively. For this reason, the temperature rise of the air (supply air flow 3) after dehumidification can be further suppressed.

(Embodiment 3)
The heat exchange type ventilator 50b with the dehumidifying function according to the third embodiment of the present invention mixes a part of the exhaust flow 2 before heat exchange with the exhaust flow 2 after heat exchange in the heat exchange type ventilator 10. Embodiment 2 is different from Embodiments 1 and 2 in that it is configured to be introduced into the dehumidifying device 30 after that. Other configurations of the heat exchange type ventilator 50b with the dehumidification function are the same as those of the heat exchange type ventilator 50 with the dehumidification function according to the first embodiment or the heat exchange type ventilator 50a with the dehumidification function according to the second embodiment. is there. Hereinafter, the contents already described in the first and second embodiments will not be described again, and points different from the first and second embodiments will be mainly described.

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

  As shown in FIG. 5, in the heat exchange type ventilation device 10, a switching damper 40 is installed in the exhaust air passage 4 after the heat exchange as in the first embodiment. Further, in the heat exchange ventilator 10, similarly to the second embodiment, a branch damper 43 that divides the exhaust flow 2 before heat exchange into a first exhaust flow 2a and a second exhaust flow 2b is installed. .

  In the heat exchange type ventilator 10, the first exhaust stream 2 a of the divided exhaust stream 2 is led to the dehumidifier 30 via the switching damper 40 of the exhaust air path 4 after flowing through the heat exchange element 12. . At this time, the second exhaust stream 2b that has flowed by bypassing the heat exchange element 12 is mixed with the first exhaust stream 2a. That is, the exhaust stream 2 in which the first exhaust stream 2a after the heat exchange and the second exhaust stream 2b before the heat exchange are mixed is introduced into the dehumidifier 30. Then, the exhaust gas flow 2 introduced into the dehumidifier 30 flows through the radiator 32 and is then led out to the exhaust air passage 4 after heat exchange in the heat exchange type ventilation device 10.

  According to the heat exchange type ventilator 50b with the dehumidifying function according to the third embodiment, the second exhaust stream 2b before the heat exchange is combined with the first exhaust stream 2a after the heat exchange, so that after the heat exchange. In a state where the temperature is lower than that of the first exhaust stream 2a, the amount of air of the exhaust stream 2 (mixed exhaust stream) introduced into the dehumidifier 30 can be increased. Therefore, the radiator 32 can be effectively cooled, and the temperature rise of the dehumidified air (air supply flow) can be suppressed.

(Embodiment 4)
The heat exchange type ventilator with dehumidification function 50c according to the fourth embodiment of the present invention is different from the third embodiment in that the radiator and the expander constituting the refrigeration cycle of the dehumidifier 30a have a two-stage configuration. . Other configurations of the heat exchange type ventilator with dehumidification function 50c are the same as those of the heat exchange type ventilator with dehumidification function 50b according to the third embodiment. Hereinafter, the contents already described in the third embodiment will not be repeatedly described, and the points different from the third embodiment will be mainly described.

  Fourth Embodiment A heat exchange type ventilator 50a with a dehumidifying function according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic diagram illustrating a configuration of a heat exchange type ventilator with a dehumidifying function according to Embodiment 4 of the present invention.

  As shown in FIG. 6, the dehumidifier 30 a in the heat exchange ventilator 50 c with a dehumidifier function includes, as the radiator 32, a first radiator 32 a and a second radiator 32 b different from the first radiator 32 a. . In addition, the dehumidifier 30a includes, as the expander 33, a first expander 33a and a second expander 33b different from the first expander 33a. The refrigeration cycle in the dehumidifier 30a is configured by 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 this order. Further, the heat exchanger 35 is disposed between the heat absorber 34 and the second radiator 32b, similarly to the conventional heat exchanger 111 (see FIG. 9).

  Unlike the compressor 31 of the first embodiment, the compressor 31 of the present embodiment raises the temperature of the refrigerant gas to about 50 ° C. and introduces the refrigerant gas into the first radiator 32a.

  The first radiator 32a exchanges heat between the exhaust stream 2 (the exhaust stream obtained by mixing the first exhaust stream 2a after the heat exchange and the second exhaust stream 2b before the heat exchange) introduced into the dehumidifier 30a. This is a device that releases heat to the outside (outside the refrigeration cycle). The second radiator 32b exchanges heat with the supply air flow 3 (the first supply air flow 3a and the second supply air flow 3b) introduced into the dehumidifier 30a, thereby transferring heat to the outside (outside the refrigeration cycle). It is a device that is released.

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

  Although the details will be described later, the first expander 33a decompresses the high-pressure gas-liquid two-phase refrigerant (the refrigerant in which the gaseous refrigerant and the liquid refrigerant are mixed) introduced from the first radiator 32a. This is a device that uses a two-phase refrigerant at a predetermined temperature (for example, an indoor temperature of about 27 ° C.) and medium pressure. The second expander 33b is a device that decompresses the medium-pressure supercooled liquid refrigerant introduced from the second radiator 32b and converts it into a low-temperature, low-pressure gas-liquid two-phase refrigerant.

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

  Next, the operation of the refrigeration cycle of the dehumidifier 30a in the heat exchange ventilator 50c with the dehumidification function will be described with reference to FIG. FIG. 7 is a Mollier chart of the heat exchange type ventilator with a dehumidifying function according to Embodiment 4 of the present invention during a dehumidifying operation. Here, the vertical axis is the pressure of the refrigerant, and the horizontal axis is the specific enthalpy of the refrigerant. In addition, a region S1 in FIG. 7 is a superheated steam region (a region where the refrigerant exists as superheated steam), a region S2 is a wet steam region (a region where the refrigerant exists as wet steam), and the region S3 is a superheated steam region. This is a cooling liquid region (a region where the refrigerant exists as a supercooled liquid). Further, the curve S4 in FIG. 7 indicates that the saturated vapor line (the demarcation line between the region S1 and the region S2) and the saturated liquid line (the demarcation line between the region S2 and the region S3) sandwich a critical point (not shown). It is a constructed curve.

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

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

  Then, the gas refrigerant or the gas-liquid two-phase refrigerant flowing out of the first radiator 32a is reduced in pressure from high pressure to medium pressure by the first expander 33a, and the condensing temperature is reduced to a predetermined temperature (indoor temperature). It flows into the second radiator 32b (point C in FIG. 7).

  The gas-liquid two-phase refrigerant having a predetermined temperature and medium pressure flowing into the second radiator 32b exchanges heat with the dehumidified air supply flow 3 (the first air supply flow 3a and the second air supply flow 3b). The refrigerant condenses into a low-dry gas-liquid two-phase refrigerant or a supercooled liquid refrigerant and flows out of the second radiator 32b (point D in FIG. 7). On the other hand, the supply air flow 3 (particularly the first supply air flow 3a that has exchanged heat with the heat absorber 34) introduced into the dehumidifier 30a rises to a predetermined temperature (indoor temperature) due to heat exchange with the second radiator 32b. After that, it is led out to the supply air passage 5 and blows out indoors. More precisely, the supply air flow 3 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. It is blown out.

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

  The gas-liquid two-phase refrigerant that has flowed 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 high-dryness refrigerant or a gas refrigerant, and flows out of the heat absorber 34. (Point F in FIG. 7). On the other hand, the first supply airflow 3a cooled by the heat absorber 34 becomes air lower than the dew point temperature, so that the first supply airflow 3a is condensed and the moisture of the first supply airflow 3a can be removed. The gas refrigerant flowing out of the heat absorber 34 is sucked into the compressor 31.

  In such a refrigeration cycle, the temperature of the supply airflow 3 rising by the second radiator 32b can be adjusted to a predetermined temperature (indoor temperature) by reducing the refrigerant to a medium pressure by the first expander 33a. . For this reason, even if the dehumidifier 30a exchanges heat between the air supply flow 3 and the second radiator 32b, the temperature rise of the air supply flow 3 can be kept at a predetermined temperature.

  This will be described in more detail. In the radiator 32 of the first embodiment, since the supply air flow 3 flowing through the radiator 32 performs heat exchange with the refrigerant (temperature: about 45 ° C.) introduced into the radiator 32, the radiator 32 The air supply flow 3 flowing through is blown up after being heated to a maximum of about 45 ° C. On the other hand, in the second radiator 32b of the present embodiment, the supply air flow 3 introduced into the second radiator 32b is heated by the refrigerant (temperature: about 27 ° C.) introduced into the second radiator 32b. Since the replacement is performed, the supply air flow 3 flowing through the second radiator 32b is heated up to about 27 ° C. and blown out. That is, by adjusting the refrigerant temperature to the predetermined temperature (about 27 ° C.) by the first expander 33a, the supply air flow 3 which exchanges heat with the refrigerant temperature does not become higher than the predetermined temperature (indoor temperature).

  Here, the dehumidifying device 30a of the present embodiment has a heat amount corresponding to energy absorbed by the heat absorber 34 by the first radiator 32a and energy for circulating the refrigerant in the refrigeration cycle in the compressor 31. Is adjusted so that most of the heat is exhausted. Thus, the amount of heat exhausted by the second radiator 32b is reduced, and the temperature of the refrigerant introduced into the second radiator 32b can be reduced to about 27 ° C.

  According to heat exchange ventilator with dehumidifying function 50c according to Embodiment 4, refrigerant in refrigeration cycle by first expander 33a (refrigerant introduced from first radiator 32a cooled by exhaust stream 2). Is reduced, the temperature of the second radiator 32b can be made lower than the temperature of the first radiator 32a. Therefore, when the heat exchange between the supply air flow 3 and the second radiator 32b is performed, Temperature rise can be suppressed. In other words, the heat exchange type ventilator 50c with a dehumidifying function can blow the supply air flow in which the temperature rise caused by the dehumidification is suppressed.

(Embodiment 5)
The heat exchange type ventilator with dehumidification function 50d according to Embodiment 5 of the present invention is different from Embodiment 1 in that an auxiliary fan 38 is provided between the heat exchanger 35 and the radiator 32 in the dehumidifier 30. And different. Other configurations of the heat exchange type ventilator 50d with the dehumidifying function are the same as those of the heat exchange type ventilator 50 with the dehumidifying function according to the first embodiment. Hereinafter, the contents already described in the first embodiment will not be described again, and the points different from the first embodiment will be mainly described.

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

  As shown in FIG. 8, the dehumidifier 30 a in the heat exchange ventilator 50 d with a dehumidifier function includes an auxiliary fan 38 in an air passage communicating between the second flow path 37 of the heat exchanger 35 and the radiator 32. is set up. The auxiliary fan 38 is a device for increasing or decreasing the amount of air (second air supply flow 3b) flowing through the second flow path 37 in addition to the branch damper 42. Note that the auxiliary fan 38 and the branch damper 42 correspond to an “air amount adjusting unit” in the claims.

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

  According to the heat exchange type ventilator with dehumidification function 50d according to the fifth embodiment, the auxiliary fan 38 controls the flow rate of the first supply airflow 3a flowing through the first flow path 36 and the second airflow flowing through the second flow path 37. Since the flow rate of the second air flow 3b can be easily increased, the temperature of the second air flow 3b flowing through the second flow path 37 can be effectively lowered, and the dehumidifying effect on the second air flow 3b can be improved. Can be enhanced.

  As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily inferred. For example, the numerical values given in the above embodiment are merely examples, and other numerical values can naturally be adopted.

  In the heat exchange type ventilator 50c with a dehumidifying function according to the fourth embodiment, as the first expander 33a, for example, a refrigerant opening / closing unit that increases / decreases a refrigerant circulation amount in a refrigeration cycle by opening / closing and drives a refrigerant opening / closing unit And a driving unit. In this way, by driving the driving means and increasing the opening degree of the refrigerant opening / closing means, the pressure reduction 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 / closing means, the amount of pressure reduction of the refrigerant can be increased, and the temperature of the supplied air flow 3 can be lowered. That is, by applying such a first expander 33a, the amount of pressure reduction of the refrigerant can be controlled, so that the temperature (upper limit temperature) after heat exchange in the second radiator 32b can be controlled.

  Further, in the heat exchange type ventilator 50c with a dehumidifying function according to the fourth embodiment, as shown in FIG. 6, in addition to the first expander 33a having the refrigerant opening / closing means and the driving means, the exhaust flow 2 before heat exchange is provided. A first temperature sensor 44 for detecting the air temperature of the air supply, a second temperature sensor 45 for detecting the air temperature of the supply air flow 3 after flowing through the second radiator 32b, and a first control for controlling the first expander 33a. (Not shown). The first control unit opens and closes the refrigerant opening / closing means of the first expander 33a based on the temperature detected by the first temperature sensor so that the temperature detected by the second temperature sensor 45 falls within a predetermined temperature range. Control the driving means. In particular, the first control unit, when the temperature at the second temperature sensor 45 is higher than the temperature at the first temperature sensor 44, operates the driving unit to reduce the opening degree of the refrigerant switching unit, The pressure reduction amount of the refrigerant is increased, and the temperature of the supply air flow 3 is decreased. Thereby, in the heat exchange type ventilator 50c with the dehumidification function, it becomes possible to supply the supply air flow 3 having the same temperature as that of the first temperature sensor 44 (the exhaust flow 2 before the heat exchange sucked in from the room). .

  Further, the control method of the first control unit may be changed to supply the supply air flow 3 having a temperature different from the temperature of the first temperature sensor 44. In summer, the air supply flow 3 having a temperature lower than the temperature of the first temperature sensor 44 is supplied indoors as long as the comfort of the user indoors is not impaired. In winter, the air supply flow 3 having a temperature higher than the temperature of the first temperature sensor 44 is supplied indoors. Thereby, it is possible to supply the supply air 3 having a temperature and a humidity that is comfortable for the user indoors while performing heat exchange ventilation.

  Further, in the heat exchange type ventilator with dehumidification function 50d according to the fifth embodiment, as shown in FIG. 8, a temperature / humidity sensor 46 for detecting the temperature / humidity of the supply air flow 3 before heat exchange and an auxiliary fan 38 are provided. And a second control unit (not shown) for controlling. The second control unit calculates the amount of dehumidification required by the dehumidifier 30 based on the temperature detected by the temperature and humidity sensor 46. Then, the second controller sets the ratio of the air flow rate of the first air flow 3a flowing through the first flow path 36 to the air flow rate of the second air flow 3b flowing through the second flow path 37 in accordance with the required dehumidification amount. The auxiliary fan 38 is controlled so as to satisfy the following relationship. Thereby, in the heat exchange type ventilator with dehumidification function 50d, the second air supply flow 3b flowing through the second flow path 37 can be efficiently dehumidified.

  In the heat exchange type ventilators 50 and 50a to 50d with the dehumidifying function according to the first to fifth embodiments, a sensible heat type heat exchange element is used as the heat exchanger 35. As the element, it is preferable that members constituting the first flow path 36 and the second flow path 37 of the heat exchange element have water repellency (hydrophobicity). As the member having water repellency (hydrophobicity), for example, a resin member such as polypropylene or polystyrene is used. By doing so, the dew water generated inside the heat exchange element easily flows out of the heat exchange element, so that the heat exchange efficiency of the heat exchanger 35 caused by the dew water is not reduced, Dehumidification becomes possible.

  The heat exchange type ventilator with the dehumidification function according to the present invention enables the supply air flow in which the temperature rise caused by the dehumidification is suppressed even when using the dehumidifier combining the refrigeration cycle and the heat exchanger. Therefore, it is useful as a heat exchange type ventilator that enables indoor and outdoor heat exchange.

DESCRIPTION OF SYMBOLS 1 House 2 Exhaust flow 2a First exhaust flow 2b Second exhaust flow 3 Supply air flow 3a First supply air flow 3b Second supply air flow 4 Exhaust air path 5 Supply air path 10 Heat exchange ventilator 11 Main body case 12 Heat exchange element 13 Exhaust fan 14 Inside air port 15 Exhaust port 16 Air supply fan 17 Outside air port 18 Air supply port 30 Dehumidifier 30a Dehumidifier 31 Compressor 32 Radiator 32a First radiator 32b Second radiator 33 Expander 33a First expander 33b Second expander 34 Heat absorber 35 Heat exchanger 36 First flow path 37 Second flow path 38 Auxiliary fan 40 Switching damper 41 Switching damper 42 Branch damper 43 Branch damper 44 First temperature sensor 45 Second temperature sensor 46 Temperature / humidity sensor 50 Heat exchange ventilator with dehumidification function 50a Heat exchange ventilator with dehumidification function 50b Heat exchange ventilator with dehumidification function 50c Dehumidification Heat exchange type ventilator with function 50d Heat exchange type ventilator with dehumidification function 100 Dehumidifier 101 Air inlet 102 Body case 103 Dehumidifier 104 Air outlet 105 Compressor 106 Radiator 107 Expander 108 Heat absorber 109 First flow path 110 Second flow path 111 heat exchanger

Claims (5)

Heat exchange ventilation that exchanges heat between an exhaust airflow that flows through an exhaust air passage for discharging indoor air to the outside of the room and a supply airflow that flows through an air supply passage for supplying outdoor air to the room. Equipment and
A dehumidifier for dehumidifying the supply air flow,
A heat exchange type ventilator with a dehumidifying function comprising:
The dehumidifier is a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber, and is disposed between the heat absorber and the radiator, and the air flowing through the first flow path and the second A heat exchanger that exchanges heat with air flowing through the flow path;
The dehumidifier is configured such that the supply air flow after heat exchange is introduced from the supply air passage, and the exhaust flow is introduced from the exhaust air passage,
Part of the supply air flow introduced into the dehumidifier, the heat absorber, the first flow path of the heat exchanger, after flowing in the order of the radiator, is led out to the air supply air path,
The other part of the supply air flow introduced into the dehumidifier, after flowing in the order of the second flow path of the heat exchanger, the radiator, is led out to the air supply air path,
The exhaust flow introduced into the dehumidifier is an exhaust flow before heat exchange, and after flowing through the radiator, is led out to the exhaust air path, a heat exchange type ventilator with a dehumidifying function. . Heat exchange ventilation that exchanges heat between an exhaust airflow that flows through an exhaust air passage for discharging indoor air to the outside of the room and a supply airflow that flows through an air supply passage for supplying outdoor air to the room. Equipment and
A dehumidifier for dehumidifying the supply air flow,
A heat exchange type ventilator with a dehumidifying function comprising:
The dehumidifier is a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber, and is disposed between the heat absorber and the radiator, and the air flowing through the first flow path and the second A heat exchanger that exchanges heat with air flowing through the flow path;
The dehumidifier is configured such that the supply air flow after heat exchange is introduced from the supply air passage, and the exhaust flow is introduced from the exhaust air passage,
Part of the supply air flow introduced into the dehumidifier, the heat absorber, the first flow path of the heat exchanger, after flowing in the order of the radiator, is led out to the air supply air path,
The other part of the supply air flow introduced into the dehumidifier, after flowing in the order of the second flow path of the heat exchanger, the radiator, is led out to the air supply air path,
The exhaust flow introduced into the dehumidifier is an exhaust flow obtained by combining the exhaust flow before heat exchange and the exhaust flow after heat exchange, and after flowing through the radiator, is led to the exhaust air passage. A heat exchange type ventilator with a dehumidifying function. The radiator has a first radiator and a second radiator different from the first radiator,
The expander has a first expander and a second expander different from the first expander,
The refrigeration cycle is configured by connecting the compressor, the first radiator, the first expander, the second radiator, the second expander, and the heat absorber in this order,
The heat exchanger is disposed between the heat absorber and the second radiator,
A part of the supply air flow introduced into the dehumidifier, the heat absorber, the first flow path of the heat exchanger, after flowing in the order of the second radiator, is led out to the air supply air path,
The other part of the supply air flow introduced into the dehumidifier, after flowing in the second flow path of the heat exchanger, in order of the second radiator, is led out to the air supply air path,
The heat exchange type ventilation with a dehumidification function according to claim 1 or 2 , wherein the exhaust gas introduced into the dehumidifier is led out to the exhaust air path after flowing through the first radiator. apparatus. The air flow control part which increased or decreased the air which flows through the said 2nd flow path was further provided between the said 2nd flow path and the said radiator of the said heat exchanger, The Claim 1 or 2 characterized by the above-mentioned. Heat exchange type ventilator with dehumidification function. Heat exchange ventilation that exchanges heat between an exhaust airflow that flows through an exhaust air passage for discharging indoor air to the outside of the room and a supply airflow that flows through an air supply passage for supplying outdoor air to the room. Equipment and
A dehumidifier for dehumidifying the supply air flow,
A heat exchange type ventilator with a dehumidifying function comprising:
The dehumidifier is connected in the order of 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. A refrigeration cycle configured and disposed between the heat absorber and the second radiator, a heat exchanger that exchanges heat between air flowing through the first flow path and air flowing through the second flow path, Including
The dehumidifier is configured such that the supply air flow after heat exchange is introduced from the supply air passage, and the exhaust flow is introduced from the exhaust air passage,
A part of the supply air flow introduced into the dehumidifier, the heat absorber, the first flow path of the heat exchanger, after flowing in the order of the second radiator, is led out to the air supply air path,
The other part of the supply air flow introduced into the dehumidifier, after flowing in the second flow path of the heat exchanger, in order of the second radiator, is led out to the air supply air path,
The heat exchange type ventilator with a dehumidification function, wherein the exhaust gas introduced into the dehumidifier flows through the first radiator and is then led to the exhaust air passage.