JP2020159595A - Heat exchange type ventilation device with humidity control function - Google Patents

Abstract

To provide a heat exchange type ventilation device with a humidity control function enabling improvement of humidity control performance at the time of dehumidification or humidification.SOLUTION: A heat exchange type ventilation device 50 with a humidity control function includes: a heat exchange type ventilation device 10 performing heat exchange between an exhaust air flow 2 circulating through an exhaust air duct 4 and a supply air flow 3 circulating through a supply air duct 5; a liquid atomization device 60 humidifying the supply air flow 3; and a humidification device 30 dehumidifying the supply air flow 3. A dehumidification device 30 includes: a refrigeration cycle composed of a compressor 31, a radiator 32, an expansion container 33, a heat absorber 34 and a four-way valve 31a; and a heat exchanger 35 disposed on the downstream side of the heat absorber 34 to perform heat exchange. The supply air flow 3 introduced into the dehumidification device 30 circulates through the inside and is guided out to the supply air duct 5. The supply air flow 3 guided out to the supply air duct 5 from the dehumidification device 30 is supplied into a room by the liquid atomization device 60 without being humidified in a dehumidifying mode, and is supplied into the room by the liquid atomization device 60 after being humidified in a heating mode.SELECTED DRAWING: Figure 3

Description

The present invention relates to a heat exchange type ventilation device with a humidity control function that performs heat exchange ventilation while adjusting humidity in a living space or the like.

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

In recent years, due to the effects of global warming and the improvement of airtightness of houses, indoors become cold and dry in winter, while indoors become hot and humid in summer, which impairs indoor comfort for residents. Is a concern. In either case, since indoor humidity control is particularly important for improving indoor comfort, heat exchange type with humidity control function (dehumidification / humidification function) that performs heat exchange ventilation while adjusting the indoor humidity. Ventilation equipment is required. Therefore, in order to realize the humidifying function among the humidity control functions, we are proceeding with the development of a heat exchange type ventilator to which a liquid micronizer that humidifies by water crushing is applied, while in order to realize the dehumidifying function. We are developing a heat exchange type ventilator that applies a dehumidifier that combines a refrigeration cycle and a heat exchanger. As a liquid miniaturization device that humidifies by water crushing, for example, the liquid miniaturization device described in Patent Document 1 is known. Further, as a dehumidifying device that combines a refrigeration cycle and a heat exchanger, for example, the dehumidifying device described in Patent Document 2 is known.

First, a conventional liquid miniaturization device will be described with reference to FIG.

As shown in FIG. 9, the conventional liquid miniaturization device 101 includes a processing chamber 102 through which outside air passes by a blower, and a water storage unit 103 that stores a predetermined amount of water supplied from a water supply pipe. Further, a mortar-shaped rotating body 104 whose lower portion is submerged in the water storage unit 103 and whose diameter expands upward, and water and air which rotate together with the rotating body 104 and are scattered by the centrifugal force due to the rotation of the rotating body 104 can pass through. A cylindrical porous body 105 is provided. Then, due to the centrifugal force generated by the rotation of the rotating body 104, water is sucked up from the water storage unit 103, and the water scattered from the rotating body 104 to the outside collides with the peripheral portion through the porous body 105 so that the water is made finer. It has become. As a result, the conventional liquid miniaturization device 101 humidifies the introduced air.

Next, the conventional dehumidifying device will be described with reference to FIG.

As shown in FIG. 10, in the conventional dehumidifying device 200, the air (air X, air Y) sucked into the main body case 202 from the air suction port 201 is passed through the dehumidifying portion 203, and then from the air outlet 204. It is configured to blow out to the outside of the main body case 202. The dehumidifying unit 203 is arranged between the refrigerating cycle in which the compressor 205, the radiator 206, the expander 207, and the heat absorber 208 are connected in this order, and the heat absorber 208 and the radiator 206, and the air X flowing through the first flow path 209. A heat exchanger 211 for heat exchange between the air and the air Y flowing through the second flow path 210 is provided. Then, the air X flowing through the first flow path 209 is cooled by the heat absorber 208 to cause dew condensation. Condensed water generated by the occurrence of this dew is collected. On the other hand, the air Y flowing through the second flow path 210 exchanges heat with the air X cooled by the heat absorber 208 and is cooled to cause dew condensation. Condensation water generated by the occurrence of this dew condensation is also recovered. As a result, the conventional dehumidifying device 200 dehumidifies the introduced air.

JP-A-2009-279514 International Publication No. 2016/031139

When developing a heat exchange type ventilator with a humidity control function that incorporates the humidification function of the conventional liquid miniaturization device 101 and the dehumidification function of the conventional dehumidifier 200, a certain level of humidity control amount during dehumidification ( It is possible to achieve (humidification amount, dehumidification amount). However, in the residential environment in Japan, there is a large difference in temperature and humidity throughout the year, so there is a strong demand for further improvement in humidity control performance in order to improve indoor comfort for residents. In particular, 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 ventilation device with a humidity control function.

The present invention has been made to solve the above problems, and provides a heat exchange type ventilation device with a humidity control function capable of improving the humidity control performance at the time of dehumidification and dehumidification.

In order to achieve this object, the heat exchange type ventilator with a humidity control function according to the present invention supplies the exhaust flow flowing through the exhaust air passage for exhausting the indoor air to the outside and the outdoor air to the room. A heat exchange type ventilator that exchanges heat with the air supply air flowing through the air supply air passage for airing, and an air supply air supply that is configured and introduced so that the air supply air after heat exchange is introduced from the air supply air passage. It is provided with a humidifying device for humidifying the air supply air passage and a dehumidifying device for introducing the air supply air after heat exchange from the air supply air passage and dehumidifying the introduced air supply air flow. The dehumidifier is a refrigerant cycle consisting of a compressor, a radiator, an expander, a heat absorber, and a four-way valve, and is arranged on the downstream side of the heat exchanger to provide air flowing through the first flow path and the second flow path. Includes a heat exchanger that exchanges heat with the flowing air. The dehumidifier has a dehumidification mode in which the flow of the refrigerant in the refrigerant cycle is set as the first direction by the four-way valve to dehumidify the air supply, and the flow of the refrigerant in the refrigerant cycle is reversed by the four-way valve in the first direction. As the second direction of the above, it has a heating mode for heating the air supply. A part of the air supply air introduced into the dehumidifier is led out to the air supply air passage after flowing through the first flow path of the heat absorber and the heat exchanger, and the other part of the air supply air introduced into the dehumidifier is After flowing through the second flow path of the heat exchanger, it is led out to the air supply air passage. The exhaust flow introduced into the dehumidifying device is led out to the exhaust air passage after flowing through the radiator. The air supply air drawn from the dehumidifying device to the air supply air passage is supplied to the room without being humidified by the dehumidifying device in the dehumidifying mode, and is humidified by the humidifying device and supplied to the room in the heating mode.

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 at the time of dehumidification.

FIG. 1 is a schematic view showing an installation state of a heat exchange type ventilation device according to a premise example of the present invention in a house. FIG. 2 is a schematic view showing the configuration of the heat exchange type ventilation device according to the premise example of the present invention. FIG. 3 is a schematic view showing the configuration of a heat exchange type ventilation device with a humidity control function according to the first embodiment of the present invention. FIG. 4 is a schematic view showing the configuration of the dehumidifying device in the dehumidifying mode in the heat exchange type ventilator with a humidity control function. FIG. 5 is a schematic view showing the configuration of a dehumidifying device in a heating mode in a heat exchange type ventilator with a humidity control function. FIG. 6 is a schematic view showing the configuration of a liquid miniaturization device in a heat exchange type ventilator with a humidity control function. FIG. 7 is a schematic view showing the configuration of a heat exchange type ventilation device with a humidity control function according to the second embodiment of the present invention. FIG. 8 is a schematic view showing the configuration of a heat exchange type ventilation device with a humidity control function according to the eighth embodiment of the present invention. FIG. 9 is a schematic cross-sectional view showing the configuration of a conventional liquid miniaturization apparatus. FIG. 10 is a schematic cross-sectional view showing the configuration of a conventional dehumidifying device.

The heat exchange type ventilator with a humidity control function according to the present invention provides an exhaust flow that flows through an exhaust air passage for exhausting indoor air to the outside and an air supply air passage for supplying outdoor air to the room. A heat exchange type ventilator that exchanges heat with the circulating air supply, and a humidifier that is configured to introduce the air supply after heat exchange from the air supply air passage and humidifies the introduced air supply. It is provided with a dehumidifying device which is configured to introduce the air supply air after heat exchange from the air supply air passage and dehumidifies the introduced air supply airflow. The dehumidifier is a refrigerant cycle consisting of a compressor, a radiator, an expander, a heat absorber, and a four-way valve, and is arranged on the downstream side of the heat exchanger to provide air flowing through the first flow path and the second flow path. Includes a heat exchanger that exchanges heat with the flowing air. The dehumidifier has a dehumidification mode in which the flow of the refrigerant in the refrigerant cycle is set as the first direction by the four-way valve to dehumidify the air supply, and the flow of the refrigerant in the refrigerant cycle is reversed by the four-way valve in the first direction. As the second direction of the above, it has a heating mode for heating the air supply. A part of the air supply air introduced into the dehumidifier is led out to the air supply air passage after flowing through the first flow path of the heat absorber and the heat exchanger, and the other part of the air supply air introduced into the dehumidifier is After flowing through the second flow path of the heat exchanger, it is led out to the air supply air passage. The exhaust flow introduced into the dehumidifying device is led out to the exhaust air passage after flowing through the radiator. The air supply air drawn from the dehumidifying device to the air supply air passage is supplied to the room without being humidified by the dehumidifying device in the dehumidifying mode, and is humidified by the humidifying device and supplied to the room in the heating mode.

According to such a configuration, it is possible to easily heat the airflow introduced into the humidifying device by switching the four-way valve of the dehumidifying device, and it is possible to increase the amount of humidification to the airflow flowing through the dehumidifying device. That is, it is possible to provide a heat exchange type ventilator with a humidity control function capable of improving the humidity control performance at the time of dehumidification.

Further, the heat exchange type ventilator with a humidity control function according to the present invention further includes an air passage switching unit installed in the air supply air passage after heat exchange. Then, the air passage switching unit is introduced into a state in which the air supply after heat exchange passes through the dehumidifier and is introduced into the humidifier, and the air supply after heat exchange is introduced into the humidifier without flowing through the dehumidifier. It is configured to be switchable between states. According to such a configuration, when it is not necessary to heat the air supply to be introduced into the humidifying device, the air passage switching unit can easily control the state in which the air supply does not flow to the dehumidifying device, and dehumidifies during humidification. The increase in pressure loss caused by the device is suppressed, and energy-saving operation can be realized.

Further, in the heat exchange type ventilation device with a humidity control function according to the present invention, the dehumidifying device further includes a water spraying portion for spraying water on the radiator. Then, in the dehumidifying mode, the exhaust flow introduced into the dehumidifying device is led out to the exhaust air passage after flowing through the radiator in a state where water is sprayed by the water spraying portion. According to such a configuration, in the dehumidifying mode, the energy required for cooling (exhaust heat) of the radiator in the dehumidifying device is generated by the air heat of the exhaust stream from the heat exchange type ventilation device and the heat of vaporization of the sprayed water. Since it can be obtained, the radiator can be effectively cooled. Therefore, the amount of dehumidification from the air supply flowing through the dehumidifying 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 at the time of dehumidification.

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

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

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

In FIG. 1, a heat exchange type ventilation device 10 is installed indoors of the house 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 flow 2 is discharged to the outside through the heat exchange type ventilator 10 as shown by the black arrow. The exhaust flow 2 is a flow of air discharged from indoors to outdoors. Further, the air supply air flow 3 is taken into the room via the heat exchange type ventilation device 10 as shown by the white arrow. The air supply 3 is a flow of air taken in from the outside to the inside. For example, in winter in Japan, the exhaust flow 2 has a temperature of 20 to 25 ° C., whereas the air flow 3 may reach below freezing. The heat exchange type ventilation device 10 ventilates and transfers the heat of the exhaust flow 2 to the supply airflow 3 at the time of this ventilation to suppress the release of unnecessary heat.

As shown in FIG. 2, the heat exchange type ventilation device 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. It is provided with an air passage 4 and an air supply air passage 5. The main body case 11 is an outer frame of the heat exchange type ventilator 10. An inside air port 14, an exhaust port 15, an outside air port 17, and an air supply port 18 are formed on the outer periphery of the main body case 11. The inside air port 14 is a suction port for sucking the exhaust flow 2 into the heat exchange type ventilation device 10. The exhaust port 15 is a discharge port that discharges the exhaust flow 2 from the heat exchange type ventilation device 10 to the outside. The outside air port 17 is a suction port that sucks the air supply air 3 into the heat exchange type ventilation device 10. The air supply port 18 is a discharge port that discharges the air supply air 3 indoors from the heat exchange type ventilation device 10.

A heat exchange element 12, an exhaust fan 13, and an air supply fan 16 are mounted inside the main body case 11. Further, inside the main body case 11, an exhaust air passage 4 and an air supply air passage 5 are configured. The heat exchange element 12 is a member for performing heat exchange (sensible heat and latent heat) between the exhaust flow 2 flowing through the exhaust air passage 4 and the air supply air flow 3 flowing through the air supply air passage 5. The exhaust fan 13 is a blower for sucking the exhaust flow 2 from the inside air port 14 and discharging it from the exhaust port 15. The air supply fan 16 is a blower for sucking the air flow 3 from the outside air port 17 and discharging it from the air supply port 18. The exhaust air passage 4 is an air passage that communicates the inside air port 14 and the exhaust port 15. The air supply air passage 5 is an air passage that communicates the outside air port 17 and the air supply port 18. The exhaust flow 2 sucked by the exhaust fan 13 is discharged to the outside from the exhaust port 15 via the heat exchange element 12 and the exhaust fan 13 in the exhaust air passage 4. Further, the airflow 3 sucked by the air supply fan 16 is supplied indoors 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 ventilation device 10 operates the exhaust fan 13 and the air supply fan 16 of the heat exchange element 12 with the exhaust flow 2 flowing through the exhaust air passage 4 in the heat exchange element 12. , Heat exchange is performed with the air supply airflow 3 flowing through the air supply air passage 5. As a result, the heat exchange type ventilator 10 transfers the heat of the exhaust flow 2 released to the outside to the air supply 3 that takes in the room when ventilating, suppresses the release of unnecessary heat, and heats the room. To collect. As a result, in winter, when ventilating, the indoor temperature drop can be suppressed by the air having a low outdoor temperature. On the other hand, in the summer, when ventilating, the indoor temperature rise can be suppressed by the air having a high outdoor temperature.

(Embodiment 1)
Next, with reference to FIG. 3, a heat exchange type ventilation device with a humidity control function (dehumidification / humidification function) according to the first embodiment will be described. FIG. 3 is a schematic view showing the configuration of a heat exchange type ventilation device with a humidity control function according to the first embodiment of the present invention. In each schematic diagram after FIG. 3, the exhaust air passage 4 and the air supply air passage 5 are also shown as the flow (black arrow) of the exhaust flow 2 and the air supply 3 in the heat exchange type ventilation device 10. There is.

First, the flow of the airflow (exhaust flow 2, supply airflow 3) in the heat exchange type ventilation device 50 with a humidity control function will be described. In the following description, the airflow (exhaust flow 2, air supply 3) or air passage (exhaust air passage 4, air supply air passage 5) after heat exchange passes through the heat exchange element 12 in the heat exchange type ventilation device 10. The airflow or air passage before heat exchange shall indicate the airflow or air passage before passing through the heat exchange element 12.

As shown in FIG. 3, the heat exchange type ventilator 50 with a humidity control function according to the first embodiment is a dehumidifying device as a means for imparting a dehumidifying function to the heat exchange type ventilator 10 according to the premise example. It has a configuration in which the 30 and the liquid micronization device 60 are connected as a means for imparting a humidifying function. The liquid miniaturization device 60 corresponds to the "humidifying device" of the claim.

Then, in the heat exchange type ventilator 10, as shown in FIG. 3, a switching damper 40 is installed in the exhaust air passage 4 after the heat exchange, and the switching damper 41 and the switching damper 43 are installed in the air supply air passage 5 after the heat exchange. Is installed. The switching damper 40 is a damper for switching between a state in which the exhaust flow 2 flowing through the exhaust air passage 4 flows outdoors and a state in which the exhaust flow 2 flowing through the exhaust air passage 4 flows through the dehumidifying device 30. Further, the switching damper 41 is a damper for switching between a state in which the airflow 3 flowing through the air supply air passage 5 flows indoors and a state in which the airflow 3 flowing through the air supply air passage 5 flows through the dehumidifying device 30. .. Further, the switching damper 43 is provided on the downstream side (indoor side of the air supply air passage 5) from the switching damper 41, and is in a state where the air flow 3 flowing through the air supply air passage 5 flows indoors and the air supply air passage 5 is distributed. This is a damper for switching between a state in which the air supply air flow 3 is flowed through the liquid miniaturization device 60. The airflow 3 that has passed through the dehumidifying device 30 is configured to be led out to the air supply air passage 5 on the upstream side (heat exchange element 12 side) of the switching damper 43. Here, the switching damper 40, the switching damper 41, and the switching damper 43 correspond to the "air passage switching portion" of the claim.

In the heat exchange type ventilator 50 with a humidity control function, by switching each switching damper (switching damper 40, switching damper 41, switching damper 43), (A) the air supply air 3 after heat exchange becomes the dehumidifying device 30 and the liquid fine. A state in which the air is supplied indoors without circulating the chemical apparatus 60, (B) the air supply air 3 after heat exchange circulates through the dehumidifying apparatus 30, and then is supplied indoors without circulating the liquid micronization apparatus 60. B state to be anxious, (C) C state in which the air supply air 3 after heat exchange is supplied indoors through the liquid micronizer 60 without flowing through the dehumidifying device 30, (D) after heat exchange The air supply air 3 is circulated through the dehumidifying device 30, and then is circulated through the liquid micronization device 60 to be in the D state in which the air is supplied indoors.

In the A state, when dehumidification is not necessary, the air supply air 3 heat-exchanged by the heat exchange type ventilator 10 is supplied indoors as it is.

In the B state, in the case of summer or the like where dehumidification is required, the dehumidified airflow 3 is supplied indoors after the dehumidification is executed for the airflow 3 after heat exchange.

In the C state, in the case of winter or the like where humidification is required, the humidified airflow 3 is supplied indoors after the airflow 3 after heat exchange is humidified.

In the D state, when the amount of humidification is required more than in the C state, the airflow 3 after heat exchange is heated, and the heated airflow 3 is humidified and then humidified. Is supplied indoors.

As described above, in the heat exchange type ventilator 50 with a humidity control function, the air flow 3 is supplied indoors in a state controlled to an appropriate humidity by switching the flow of the air flow 3 from the A state to the D state. It is configured to be. The details of the dehumidifying operation and the humidifying operation will be described later, but when the dehumidifying and humidifying operations are not necessary, the pressure loss due to the dehumidifying device 30 and the liquid micronizing device 60 can be increased by setting the A state. As a heat exchange type ventilator 50 with a suppressed humidity control function, it is possible to realize energy-saving operation throughout the year.

Next, the dehumidifying device 30 in the heat exchange type ventilation device 50 with a humidity control function will be described with reference to FIGS. 3 to 5. FIG. 4 is a schematic view showing the configuration of the dehumidifying device in the dehumidifying mode in the heat exchange type ventilator with a humidity control function. FIG. 5 is a schematic view showing the configuration of a dehumidifying device in a heating mode in a heat exchange type ventilator with a humidity control function.

The dehumidifying device 30 is a unit for dehumidifying or heating the airflow 3 after heat exchange in the heat exchange type ventilator 10. As shown in FIG. 3, the dehumidifying device 30 includes a refrigerant cycle including a compressor 31, a four-way valve 31a, a radiator 32, an expander 33, and a heat absorber 34, and a heat exchanger 35. There is. The refrigerant cycle of the present embodiment is configured by connecting the compressor 31 (+ four-way valve 31a), the radiator 32, the expander 33, and the heat absorber 34 in this order in an annular shape. In the refrigerant cycle, for example, an alternative chlorofluorocarbon (HFC134a) is used as the refrigerant. Further, a copper tube is often used for connecting each device constituting the refrigeration cycle, and the devices are connected by a welding method.

The four-way valve 31a is a device (reversible valve) for switching the flow direction of the refrigerant flowing in the refrigerant cycle. Specifically, the four-way valve 31a has a first direction (see FIG. 4) in which the refrigerant flows through the compressor 31, the radiator 32, the expander 33, and the heat absorber 34 in this order, and the compressor 31 and the heat absorber. The 34, the expander 33, and the radiator 32 are switched between the second direction (see FIG. 5) through which the refrigerant flows in this order. The flow of the refrigerant is opposite in the first direction and the second direction.

The refrigerant cycle consists of a dehumidification mode in which the refrigerant flows in the first direction through the four-way valve 31a to dehumidify the supply airflow 3 (see FIG. 5), and the refrigerant flows in the second direction through the four-way valve 31a. It has a heating mode state (see FIG. 6) in which the air supply stream 3 is heated. The radiator 32 and the heat absorber 34 are names corresponding to the functions in the dehumidification mode, but will be described below using the same names even in the heating mode.

<Dehumidification mode>
In the dehumidification mode, as shown in FIG. 4, the refrigerant flows through the compressor 31, the radiator 32, the expander 33, and the heat absorber 34 in this order (first direction) by the four-way valve 31a.

The compressor 31 is a device that compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle to increase the pressure and raise 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 refrigerant cycle) by exchanging heat between the refrigerant gas that has become hot and high pressure by the compressor 31 and air (exhaust flow 2). 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 temperature of the refrigerant gas is cooled. The radiator 32 is also referred to as a condenser.

The expander 33 is a device that reduces the pressure of the high-pressure refrigerant liquefied by the radiator 32 to the original low-temperature / low-pressure liquid. The expander 33 is also referred to as an expansion valve.

The heat absorber 34 is a device in which the refrigerant flowing through the expander 33 takes heat from the air and evaporates, and the liquid refrigerant is used as 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, so that when heat is exchanged, the air is cooled and the temperature of the refrigerant is raised. The heat absorber 34 is also referred to as an evaporator.

<Heating mode>
In the heating mode, as shown in FIG. 5, the refrigerant flows through the compressor 31, the heat absorber 34, the expander 33, and the radiator 32 in this order (second direction) by the four-way valve 31a.

Similar to the dehumidification mode, the compressor 31 compresses the low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle to increase the pressure and raise the temperature.

The heat absorber 34 is a device that performs the same function as the radiator 32 in the dehumidification mode. Specifically, the heat absorber 34 exchanges heat between the refrigerant gas that has become hot and high pressure by the compressor 31 and air (first air supply airflow 3a described later) to exchange heat with the outside (outside the refrigerant cycle). ). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the heat absorber 34, the temperature of the introduced refrigerant gas (about 45 ° C.) is higher than the temperature of the air. Therefore, when the heat is exchanged, the temperature of the air is raised and the refrigerant gas is cooled.

The expander 33 decompresses the high-pressure refrigerant liquefied by the heat absorber 34 to obtain the original low-temperature, low-pressure liquid.

The radiator 32 is a device that performs the same function as the heat absorber 34 in the dehumidification mode. Specifically, in the radiator 32, the refrigerant flowing through the expander 33 takes heat from the air and evaporates, and the liquid refrigerant is used as a low-temperature / low-pressure refrigerant gas. In the radiator 32, since the temperature of the introduced refrigerant is lower than the temperature of the air, heat exchange cools the air and raises the temperature of the refrigerant.

Further, the heat exchanger 35 is a heat exchanger provided with a sensible heat type heat exchange element. The heat exchanger 35 is arranged in a space on the downstream side (between the heat exchanger 34 and the radiator 32) of the heat exchanger 34, similarly to the heat exchanger 211 (see FIG. 9) in the conventional dehumidifier 200. Inside the heat exchanger 35, 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 are provided. The first flow path 36 is a flow path for leading the air introduced from the heat absorber 34 to the air supply air passage 5 without passing through the radiator 32. The second flow path 37 is a flow path for leading the air introduced from the heat exchange type ventilation device 10 to the air supply air passage 5 without passing through 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.

Subsequently, the flow of the airflow (exhaust flow 2, supply airflow 3) in the dehumidifying device 30 will be described.

As shown in FIG. 3, the dehumidifying device 30 has a branch damper 42 that divides the heat exchanged airflow 3 introduced inside into two airflows (first airflow 3a and second airflow 3b). is set up. The first airflow 3a is an airflow introduced into the heat absorber 34 and circulates in the first flow path 36, and the second airflow 3b is an airflow introduced into the heat exchanger 35 and circulates in the second flow path 37. is there. The branch damper 42 is configured to have a variable ratio of the air volume of the first air flow 3a and the air volume of the second air flow 3b. That is, the branch damper 42 can easily increase or decrease the ratio of the first airflow 3a to the second airflow 3b by adjusting the angle of the damper (branch ratio of the airflow 3 after heat exchange). It has become. Here, the first airflow 3a corresponds to the "part of the airflow introduced into the dehumidifying device" in the claim, and the second airflow 3b corresponds to the "airflow introduced into the dehumidifying device" in the second claim. Corresponds to the "part".

In the dehumidifying apparatus 30, the first air supply 3a of the divided air supply 3 is circulated in the order of the heat absorber 34, the first flow path 36 of the heat exchanger 35, and the radiator 32 (first direction), and then heat is generated. It is led out to the air supply air passage 5 after heat exchange in the interchangeable ventilator 10. On the other hand, the second airflow 3b is circulated in the order (second direction) of the second flow path 37 of the heat exchanger 35 and the radiator 32, and then is led out to the air supply air passage 5 after the heat exchange. In the present embodiment, the dehumidifying apparatus 30 is an air supply air passage after heat exchange after merging the first air supply airflow 3a flowing through the heat exchanger 35 and the second air supply airflow 3b flowing through the heat exchanger 35. It is configured to be derived to 5. As a result, the temperature is adjusted as the airflow 3 blown into the room. The temperature adjustment method of the airflow 3 blown into the room will be described later.

On the other hand, the exhaust flow 2 introduced into the dehumidifying device 30 is led out to the exhaust air passage 4 after heat exchange in the heat exchange type ventilation device 10 after flowing through the radiator 32. That is, in the present embodiment, the dehumidifying device 30 is configured so that the radiator 32 is cooled by the exhaust flow 2 introduced from the heat exchange type ventilation device 10.

Next, the dehumidifying operation (dehumidifying mode) and the heating operation (heating mode) of the dehumidifying device 30 will be described.

<Dehumidification mode>
First, by operating the heat exchange type ventilator 50 with a humidity control function, each switching damper is switched so that the flow is in the B state in the air flow. Then, the exhaust fan 13 and the air supply fan 16 are driven, and inside the heat exchange type ventilation device 10, an exhaust flow 2 flowing through the exhaust air passage 4 and an air supply air 3 flowing through the air supply air passage 5 are generated. ..

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

Sensible heat and latent heat are exchanged between the exhaust flow 2 and the supply airflow 3 inside the heat exchange type ventilation device 10. At this time, since the moisture moves from the hot and humid supply airflow 3 to the exhaust stream 2, the moisture in the supply airflow 3 is removed. That is, dehumidification (first dehumidification) is performed on the supply airflow 3 by total heat exchange inside the heat exchange type ventilator 10.

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

In addition, the remaining second airflow 3b of the airflow 3 introduced into the dehumidifying apparatus 30 flows into the second flow path 37 of the heat exchanger 35 and is cooled by the heat absorber 34 in the first flow path 36. It is heat exchanged with the first airflow 3a. As a result, the second airflow 3b in the second flow path 37 is cooled and dew condensation occurs, so that the moisture in the second airflow 3b is removed. That is, dehumidification (third dehumidification) is performed for the second airflow 3b by exchanging the heat with the heat exchanger 35.

That is, the heat exchange type ventilator 50 with a humidity control function is outdoors at high temperature and humidity by dehumidification (first dehumidification to third dehumidification) by each device of the heat exchange type ventilator 10, the heat absorber 34, and the heat exchanger 35. Moisture is removed from the air supply air supply 3 of the above, and the necessary dehumidification amount is secured at that time.

Further, the dehumidifying device 30 in the heat exchange type ventilator 50 with a humidity control function introduces the exhaust flow 2 from the exhaust air passage 4 of the heat exchange type ventilator 10, and the introduced exhaust flow 2 flows through the radiator 32. It is composed. In the radiator 32, the introduced exhaust flow 2 exhausts heat equivalent to the energy absorbed by the heat absorber 34 and the energy for circulating the refrigerant in the refrigerant cycle in the compressor 31, and the radiator 32. The exhaust flow 2 that has taken heat from 32 is led out to the exhaust air passage 4 and discharged to the outside as it is. That is, the radiator 32 is cooled by the introduced exhaust flow 2. As a result, the temperature rise of the supply airflow 3 (first airflow 3a, second airflow 3b) accompanying the circulation of the radiator 32 is suppressed.

<Heating mode>
First, by operating the heat exchange type ventilator 50 with a humidity control function, each switching damper is switched so that the flow is in the D state in the air flow. Then, the exhaust fan 13 and the air supply fan 16 are driven, and inside the heat exchange type ventilation device 10, an exhaust flow 2 flowing through the exhaust air passage 4 and an air supply air 3 flowing through the air supply air passage 5 are generated. ..

For example, in winter, the exhaust stream 2 is indoor air air-conditioned to a comfortable temperature and humidity by an air conditioner or the like, and the supply airflow 3 is low-temperature dry outdoor air.

Sensible heat and latent heat are exchanged between the exhaust flow 2 and the supply airflow 3 inside the heat exchange type ventilation device 10. At this time, although moisture moves from the exhaust flow 2 to the low-temperature drying airflow 3, the airflow 3 is not sufficiently humidified.

Next, the air supply air 3 after the heat exchange is introduced into the dehumidifying device 30 and heated. Specifically, of the airflow 3 introduced into the dehumidifying device 30, the first airflow 3a is heated by the heat absorber 34. Further, the remaining second airflow 3b of the airflow 3 introduced into the dehumidifying apparatus 30 flows into the second flow path 37 of the heat exchanger 35 and is heated by the heat absorber 34 in the first flow path 36. It exchanges heat with the first airflow 3a. After that, by circulating the radiator 32, the temperature of the airflow 3 (first airflow 3a, second airflow 3b) derived from the heat exchanger 35 is lowered, but before it is introduced into the dehumidifying device 30. The temperature of the supply airflow 3 rises above the temperature of the supply airflow 3 and is led out to the air supply air passage 5.

In the radiator 32, the introduced exhaust flow 2 absorbs heat equivalent to the energy radiated by the heat absorber 34 and the energy for circulating the refrigerant in the refrigerant cycle in the compressor 31, and the radiator 32 absorbs heat. The exhaust flow 2 to which heat is applied is led out to the exhaust air passage 4 and discharged to the outside as it is.

Next, a method of adjusting the temperature of the airflow 3 in the dehumidifying device 30 will be described.

As shown in FIG. 3, the heat exchange type ventilation device 50 with a humidity control function has a first temperature sensor that detects the air temperature of the exhaust flow 2 before heat exchange in relation to the control of the branch ratio of the branch damper 42. 45, a second temperature sensor 46 that detects the air temperature of the supply airflow 3 (mixed airflow of the first supply airflow 3a and the second supply airflow 3b) after flowing through and merging the heat absorber 34 of the dehumidifying device 30. It has a control unit (not shown) that controls the branch damper 42.

The control unit adjusts the branching ratio of the branch damper 42 based on the temperature detected by the first temperature sensor 45, and sets the branch damper 42 so that the temperature detected by the second temperature sensor 46 falls within a predetermined temperature range. Control. Specifically, when the temperature of the second temperature sensor 46 is higher than the temperature of the first temperature sensor 45, the control unit determines the air volume of the first air flow 3a with respect to the air volume of the second air flow 3b. And lowers the temperature of the airflow 3 after dehumidification. On the other hand, when the temperature of the second temperature sensor 46 is lower than the temperature of the first temperature sensor 45, the control unit reduces the air volume of the first air flow 3a with respect to the air volume of the second air flow 3b. , The temperature of the air supply 3 is raised. As a result, in the heat exchange type ventilation device 50 with a humidity control function, it is possible to supply air supply 3 having a temperature equivalent to that of the first temperature sensor 45 (exhaust flow 2 before heat exchange sucked from indoors). Become.

Next, the liquid miniaturization device 60 in the heat exchange type ventilation device 50 with a humidity control function will be described with reference to FIG. FIG. 6 is a schematic view showing the configuration of a liquid miniaturization device in a heat exchange type ventilator with a humidity control function.

The liquid refiner 60 is a humidifying device that refines water, impregnates the sucked air with the refined water, and blows it out.

As shown in FIG. 6, the liquid miniaturization device 60 includes a suction port 62, an outlet 63, an inner cylinder 64, an outer cylinder 68, and a water receiving portion 71.

The suction port 62 is an opening for sucking air into the liquid miniaturization device 60, and is provided on the side surface of the liquid miniaturization device 60. Further, the suction port 62 has a shape (for example, a cylindrical shape) to which a duct can be connected, and is connected to the air supply air passage 5 after heat exchange via a switching damper 43 (see FIG. 3).

The air outlet 63 is an opening for blowing out the air that has passed through the inside of the liquid miniaturization device 60, and is provided on the upper surface of the liquid miniaturization device 60. Further, the outlet 63 is formed in a region (a region between the inner cylinder 64 and the outer cylinder 68) partitioned by the inner cylinder 64 and the outer cylinder 68. The outlet 63 is provided around the inner cylinder 64 on the upper surface of the liquid miniaturization device 60. Further, the outlet 63 is provided so as to be located above the suction port 62. Further, the air outlet 63 has a shape to which a tubular duct can be connected, and is connected to the air supply air passage 5 after heat exchange (see FIG. 3).

Then, the air sucked from the suction port 62 becomes humidified air by the liquid miniaturization means 77 described later and is blown out from the outlet 63.

The inner cylinder 64 is arranged near the center inside the liquid miniaturizing device 60. Further, the inner cylinder 64 has a ventilation port 67 that opens downward in a substantially vertical direction, and is formed in a hollow cylindrical shape.

The outer cylinder 68 is formed in a cylindrical shape and is arranged so as to include the inner cylinder 64. Further, the side wall 68a of the outer cylinder 68 is provided with a water supply port 72 for supplying water to the water storage unit 70, which will be described later. The water supply port 72 is connected to the water supply / drainage pipe 39 via the first water passage 44a. The water supply port 72 is provided at a position vertically above the upper surface of the water storage unit 70 (the surface of the maximum water level that can be stored in the water storage unit 70: the water surface 80).

The water receiving portion 71 is provided over the entire bottom surface of the liquid miniaturization device 60. The water receiving unit 71 can temporarily store the water leaked from the device when, for example, an abnormality occurs in the device and a water leak occurs.

Next, the internal structure of the liquid miniaturization device 60 will be described.

As shown in FIG. 6, the liquid miniaturization device 60 includes a suction communication air passage 65, an inner cylinder air passage 66, an outer cylinder air passage 69, a water storage unit 70, and a liquid miniaturization means 77. , Has a water receiving portion 71.

The suction communication air passage 65 is a duct-shaped air passage that communicates the suction port 62 and the inner cylinder 64 (inner cylinder air passage 66), and the air sucked from the suction port 62 passes through the suction communication air passage 65. The structure extends to the inside of the inner cylinder 64.

The inner cylinder air passage 66 is an air passage provided inside the inner cylinder 64, and is provided outside the inner cylinder 64 through an opening (ventilation port 67) provided at the lower end of the inner cylinder 64. It communicates with the tubular air passage 69 (the air passage indicated by the broken line arrow in FIG. 6). In the inner cylinder air passage 66, a liquid miniaturization means 77 is arranged in the air passage.

The outer cylinder air passage 69 is an air passage formed between the inner cylinder 64 and the outer cylinder 68, and communicates with the air outlet 63.

The water storage unit 70 is provided in the lower part of the liquid miniaturization device 60 (lower part of the inner cylinder 64) and stores water. The water storage unit 70 is formed in a substantially mortar shape, and the side wall of the water storage unit 70 is connected to and integrated with the lower end of the outer cylinder 68. The water storage unit 70 has a structure in which water is supplied from a water supply port 72 provided on the side wall 68a of the outer cylinder 68, and water is discharged from a drainage port 73 provided on the bottom surface of the water storage unit 70. Here, the drainage port 73 is connected to the water supply / drainage pipe 39 via another first water passage 44a, similarly to the water supply port 72. The drain port 73 is preferably provided at the lowest position on the bottom surface of the water storage unit 70.

The liquid miniaturization means 77 is a main part of the liquid miniaturization apparatus 60, and is a place where water is miniaturized. Specifically, the liquid miniaturization means 77 includes a pumping pipe (suction pipe) 74, a rotating plate 75, and a motor 76. Further, the liquid miniaturization means 77 is provided inside the inner cylinder 64, that is, at a position covered by the inner cylinder 64.

The pumping pipe 74 sucks water from the water storage unit 70 by rotation. Further, the pumping pipe 74 is formed in a hollow truncated cone shape, and is provided so that the tip on the smaller diameter side is equal to or less than the water surface 80 of the water stored in the water storage portion 70.

The rotating plate 75 is formed in the shape of a donut-shaped disk having an open center, and is arranged on the larger diameter side of the pumping pipe 74, in other words, around the upper portion of the pumping pipe 74. On the large diameter side of the pumping pipe 74, a plurality of openings (not shown) are provided on the side surface thereof, and the sucked water passes through the openings and is supplied to the rotating plate 75. Then, the rotating plate 75 discharges the water sucked up by the pumping pipe 74 in the direction of the rotating surface.

The motor 76 rotates the pumping pipe 74 and the rotating plate 75.

The water receiving portion 71 is provided below the water storage portion 70 in the vertical direction over the entire bottom surface of the liquid miniaturizing device 60.

Next, the operation of the liquid miniaturization device 60 will be described with reference to FIG.

First, the humidifying operation of the liquid miniaturizing device 60 will be briefly described. First, water is supplied from the water supply port 72 to the water storage unit 70 from a water supply / drainage pipe 39 connected to a water supply facility (not shown), and water is stored in the water storage unit 70. Then, the air sucked from the suction port 62 into the liquid miniaturizing apparatus 60 (the air supply air 3 after heat exchange or the air supply air 3 heated by the dehumidifying apparatus 30) is introduced into the suction communication air passage 65 and the inner cylinder air passage. It passes through 66, the liquid miniaturizing means 77, and the outer cylinder air passage 69 in this order, and is blown out from the outlet 63 toward the outside (for example, indoors). At this time, the water droplets generated by the liquid miniaturization means 77 and the air passing through the inner cylinder air passage 66 come into contact with each other, and the water droplets are vaporized to humidify the air. Further, the water stored in the water storage unit 70 is discharged to the outside of the device from the drain port 73 after a predetermined time has elapsed.

Next, the humidifying operation of the liquid miniaturizing device 60, that is, how the liquid miniaturizing device 60 humidifies the air will be described in more detail.

The air that has passed from the suction port 62 through the suction communication air passage 65 and is taken into the inner cylinder of the inner cylinder air passage 66 passes through the liquid miniaturization means 77. When the pumping pipe 74 and the rotating plate 75 are rotated by the operation of the motor 76, the water stored in the water storage unit 70 by the rotation rises along the inner wall surface of the pumping pipe 74. The raised water is stretched along the surface of the rotating plate 75, and is discharged as fine water droplets from the outer peripheral edge of the rotating plate 75 toward the rotating surface. The released water droplets collide with the inner wall surface of the inner cylinder 64 and are crushed to become finer water droplets. The water droplets discharged from the rotating plate 75 and the water droplets crushed by colliding with the inner wall surface of the inner cylinder 64 come into contact with the air passing through the inner cylinder 64, and the water droplets are vaporized to humidify the air. Although some of the generated water droplets are not vaporized, since the liquid micronizing means 77 is arranged so as to be covered with the inner cylinder 64, the unvaporized water droplets adhere to the inner surface of the inner cylinder 64 and store water. It falls on the part 70.

Then, the air containing water droplets (humidified air) is blown out from the ventilation port 67 provided at the lower end of the inner cylinder 64 toward the water storage portion 70 provided below. Then, it flows toward the outer cylinder air passage 69 formed between the inner cylinder 64 and the outer cylinder 68. Here, since the air passing through the outer cylinder air passage 69 is blown upward in the vertical direction, the air flowing downward in the inner cylinder air passage 66 and the air blowing direction are changed to face each other.

At this time, the water droplets blown out together with the air from the ventilation port 67 cannot follow the air flow due to its inertia, and adhere to the water surface 80 of the water storage unit 70 or the inner wall surface of the outer cylinder 68. The heavier the weight of the water droplets, the greater this action, that is, the larger the diameter of the water droplets that are less likely to vaporize, the greater the action. Therefore, the large water droplets can be separated from the flowing air.

Then, the air that has flowed from the inner cylinder air passage 66 into the outer cylinder air passage 69 through the ventilation port 67 flows upward through the outer cylinder air passage 69. Then, it is blown out from the outlet 63. At this time, a part of the water droplets falls to the water storage unit 70 due to gravity, or adheres to the outer wall of the inner cylinder 64 or the inner wall of the outer cylinder 68. Then, the water droplets adhering to the outer wall of the inner cylinder 64 and the inner wall of the outer cylinder 68 fall to the water storage unit 70 along the outer wall surface of the inner cylinder 64 and the inner wall surface of the outer cylinder 68.

As described above, the liquid miniaturization device 60 can humidify the air (the introduced air flow 3) by the liquid miniaturization means 77. That is, the liquid miniaturization device 60 humidifies the supply airflow 3 after heat exchange when the flow of the supply airflow 3 is in the C state, while it is heated by the dehumidifying device 30 when the flow of the supply airflow 3 is in the D state. Humidity is performed on the supplied airflow 3.

As described above, according to the heat exchange type ventilation device 50 with a humidity control function according to the first embodiment, the following effects can be enjoyed.

(1) The airflow 3 led out from the dehumidifying device 30 to the air supply air passage 5 bypasses the liquid miniaturizing device 60 and is supplied to the room in the dehumidifying mode, and flows through the liquid micronizing device 60 in the heating mode. It was configured to supply air to the room. With this configuration, the airflow 3 introduced into the liquid miniaturization device 60 can be easily heated by switching the four-way valve 31a of the dehumidifying device 30, and the airflow flowing through the liquid miniaturization device 60 can be easily heated. The amount of humidification to 3 can be increased. That is, the heat exchange type ventilation device 50 with a humidity control function can be used to improve the humidity control performance at the time of dehumidification.

The airflow 3 led out from the dehumidifying device 30 to the air supply air passage 5 is supplied to the room without being humidified by the liquid miniaturizing device 60 in the dehumidifying mode, and is supplied to the room in the heating mode. It can be said that the air is humidified by 60 and supplied to the room.

(2) In the heat exchange type ventilator 50 with a humidity control function, each switching damper (switching damper 40, switching damper 41, switching damper 43) is provided in the air supply air passage 5 after heat exchange, and the air supply airflow 3 after heat exchange Is circulated through the dehumidifying device 30 and introduced into the liquid micronizing device 60 (D state), and the air supply air 3 after heat exchange is introduced into the liquid micronizing device 60 without flowing through the dehumidifying device 30. It is configured to be switchable from (C state). With this configuration, the heat exchange type ventilation device 50 with a humidity control function supplies airflow to the dehumidifying device 30 by each switching damper when it is not necessary to heat the airflow 3 to be introduced into the liquid miniaturization device 60. It is possible to easily control the state in which 3 does not flow, suppress the increase in pressure loss caused by the dehumidifying device 30 during humidification, and realize energy-saving operation.

(3) The conventional dehumidifier 200 has a configuration in which dehumidified air is passed through the radiator 206 in order to cool the radiator 206 in the refrigeration cycle. In the radiator 206, in addition to the energy absorbed by the heat absorber 208, the energy for circulating the refrigerant in the refrigeration cycle is exhausted by the compressor 205, so that the temperature of the dehumidified air that has passed through the radiator 206 is exhausted. Will rise above the temperature of the air before dehumidification. As a result, when the dehumidifying mechanism of the conventional dehumidifying device 200 is arranged in the air supply air passage of the heat exchange type ventilator to dehumidify, the dehumidified air (air whose temperature has risen) is blown into the room as it is as the air supply air. , The problem that the comfort of the room is impaired arises.

On the other hand, in the heat exchange type ventilation device 50 with a humidity control function, the exhaust flow 2 introduced into the dehumidifying device 30 is led out to the exhaust air passage 4 after flowing through the radiator 32 in the dehumidifying mode. And said. With this configuration, the heat exchange type ventilator 50 with a humidity control function transfers the energy required for cooling (exhaust heat) of the radiator 32 in the dehumidifying device 30 to the exhaust flow 2 from the heat exchange type ventilator 10. (In the summer when dehumidification is required, the temperature can be obtained by the exhaust flow 2) whose temperature is lower than that of the air supply 3), so that the temperature rise of the air (air supply 3) after dehumidification can be suppressed. Even when the configuration of the conventional dehumidifying device 200 is applied to the heat exchange type ventilation device, it is possible to blow the air supply airflow in which the temperature rise caused by the dehumidification is suppressed. That is, the heat exchange type ventilation device 50 with a humidity control function can blow the air supply airflow in which the temperature rise caused by dehumidification is suppressed.

(4) In the heat exchange type ventilator 50 with a humidity control function, the four-way valve 31a is used to switch the direction in which the refrigerant flows in the refrigerant cycle of the dehumidifier 30, so that the functions of the radiator 32 and the heat absorber 34 are reversed. .. With this configuration, the dehumidifying device 30 switches between a dehumidifying mode capable of dehumidifying the air introduced into the device and a heating mode capable of heating the air introduced into the device. It becomes possible. That is, the dehumidifying device 30 enables heating of the airflow 3 and eliminates the need to additionally install a heating means such as a heater inside the liquid miniaturization device 60. Therefore, the airflow 3 to be introduced into the liquid miniaturization device 60 is introduced. Heating can be realized at low cost.

(Embodiment 2)
The heat exchange type ventilator 50a with a humidity control function according to the second embodiment of the present invention includes a water spraying portion 38 for spraying water on the radiator 32 in the dehumidifying device 30a, and the dehumidifying device 30a. It differs from the first embodiment in that the air supply air 3 that has passed through the heat exchanger 35 is led out to the air supply air passage without flowing through the heat absorber 34. Other than this, the configuration of the heat exchange type ventilator 50a with a humidity control function is the same as that of the heat exchange type ventilator 50 with a humidity control function according to the first embodiment. Hereinafter, the contents already explained in the first embodiment will be omitted again as appropriate, and the differences from the first embodiment will be mainly described.

The heat exchange type ventilation device 50a with a humidity control function according to the second embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a schematic view showing the configuration of a heat exchange type ventilation device with a humidity control function according to the second embodiment of the present invention.

As shown in FIG. 7, the dehumidifying device 30a in the heat exchange type ventilator 50a with a humidity control function supplies water to the water spraying portion 38 that sprays water on the radiator 32 and the water spraying portion 38. In addition, a water supply / drainage pipe 39 for draining excess water generated when the water is sprayed onto the radiator 32 is provided.

In the dehumidifying device 30a, the radiator 32 constituting the refrigerant cycle is entirely arranged in the exhaust air passage 4, and the other devices (compressor 31, expander 33, heat absorber 34, heat exchanger 35). Is arranged outside the exhaust air passage 4.

The water spraying unit 38 has a water nozzle, and sprays water from the water nozzle to the radiator 32 in the form of a mist in the exhaust air passage 4. The sprayed water adheres to the surface of the heat radiating pipe or the like constituting the radiator 32 and is vaporized by the heat of the radiator 32. Then, the vaporized water is led out to the exhaust air passage 4 by the exhaust flow 2 flowing through the radiator 32 and is discharged to the outside as it is.

One end of the water supply / drainage pipe 39 is connected to the water spraying portion 38 via an opening / closing means such as a solenoid valve, and the other end is connected to the water supply equipment and the drainage equipment of the housing facility. Then, the water supply / drainage pipe 39 supplies water to the water spraying portion 38 and drains excess water generated when the water is sprayed onto the radiator 32.

Further, the water supply / drainage pipe 39 has a water channel switching unit for switching between a first state in which water is introduced from the outside into the liquid miniaturization device 60 and a second state in which water is introduced from the outside into the dehumidifying device 30a. 44 is provided.

The water channel switching unit 44 communicates with the liquid miniaturization device 60 and the water supply / drainage pipe 39 (first water passage 44a) when the air supply flow is in the B state, and the dehumidifying device 30a is in the C state or the D state. It is configured to communicate with the water supply / drainage pipe 39 (second water passage 44b). That is, the water channel switching unit 44 performs a dehumidifying treatment (B state) on the air supply 3 after heat exchange when performing a humidifying treatment on the air supply 3 after heat exchange (C state, D state). The flow of water in the water supply / drainage pipe 39 is switched depending on the case.

Next, the flow of the airflow (exhaust flow 2, supply airflow 3) in the dehumidifying device 30a will be described.

In the dehumidifying mode, the heat exchanger 35 in the dehumidifying apparatus 30a is led out to the air supply air passage 5 without the first air flow 3a led out from the first flow path 36 flowing through the radiator 32, and the second flow. The second airflow 3b introduced from the path 37 is configured to be led out to the air supply air passage 5 without flowing through the radiator 32.

On the other hand, the exhaust flow 2 introduced into the dehumidifying device 30a is led out to the exhaust air passage 4 after heat exchange in the heat exchange type ventilation device 10 after flowing through the radiator 32 as in the dehumidifying device 30. Specifically, the exhaust flow 2 introduced into the dehumidifying device 30a circulates through the radiator 32 in a state where water is sprayed by the water spraying portion 38, and then the exhaust air passage after heat exchange in the heat exchange type ventilator 10. It is derived to 4 and discharged outdoors as it is. That is, in the present embodiment, the dehumidifying device 30a is configured so that the radiator 32 is cooled by the air heat of the exhaust flow 2 introduced from the heat exchange type ventilation device 10 and the heat of vaporization of the sprayed water. Has been done.

As described above, according to the heat exchange type ventilation device 50a with a humidity control function according to the second embodiment, the following effects can be enjoyed.

(5) In the heat exchange type ventilation device 50a with a humidity control function, the exhaust flow 2 introduced into the dehumidifying device 30a passes through the radiator 32 in a state where water is sprayed by the water spraying portion 38, and then the exhaust air passage. The configuration was derived from 4. With this configuration, in the dehumidifying mode, the energy required for cooling (exhaust heat) of the radiator 32 in the dehumidifying apparatus 30a is sprayed with the air heat of the exhaust stream 2 from the heat exchange type ventilator 10. Since it can be obtained by the heat of vaporization of water, the radiator 32 can be effectively cooled. Therefore, the amount of dehumidification from the airflow 3 flowing through the dehumidifying device 30a can be increased. That is, the heat exchange type ventilation device 50a with a humidity control function can be used, which can improve the humidity control performance at the time of dehumidification.

(6) The heat exchange type ventilator 50a with a humidity control function uses the energy required for cooling (exhaust heat) of the radiator 32 in the dehumidifying device 30a with the air heat of the exhaust flow 2 from the heat exchange type ventilator 10. Since it can be obtained by the heat of vaporization of water sprayed by the water spraying portion 38, the radiator 32 can be effectively cooled, and the dehumidified air (supply airflow 3) is distributed to the radiator 32. It can be blown into the room without letting it. That is, even when the configuration of the conventional dehumidifying device 200 is applied to the heat exchange type ventilation device, it is possible to blow the air supply airflow in which the temperature rise caused by the dehumidification is suppressed.

(7) In the heat exchange type ventilation device 50a with a humidity control function, the water from the outside introduced into the liquid miniaturization device 60 for humidification is switched so as to be easily introduced into the dehumidifying device 30a by the water channel switching unit 44. be able to. That is, when water is supplied to the dehumidifying device 30a, the water supply from the outside can be shared with the liquid miniaturizing device 60, so that the radiator 32 by the water spraying unit 38 in the dehumidifying device 30a is supplied. The water spraying process can be realized at low cost.

(Embodiment 3)
In the heat exchange type ventilator 50b with a humidity control function according to the third embodiment of the present invention, the air supply air 3 after heat exchange by the heat exchange type ventilator 10a is circulated in the order of the dehumidifying device 30 and the liquid micronization device 60. It differs from the first embodiment in that it is configured to supply air to the room. Other than this, the configuration of the heat exchange type ventilator 50b with a humidity control function is the same as that of the heat exchange type ventilator 50 with a humidity control function according to the first embodiment. Hereinafter, the contents already explained in the first embodiment will be omitted again as appropriate, and the differences from the first embodiment will be mainly described.

The heat exchange type ventilation device 50b with a humidity control function according to the third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic view showing the configuration of the heat exchange type ventilation device with a humidity control function according to the third embodiment of the present invention.

As shown in FIG. 8, in the heat exchange type ventilator 50b with a humidity control function, the air supply 3 after the heat exchange by the heat exchange type ventilator 10a is supplied through the dehumidifying device 30 and the dehumidifying device 30. The air stream 3 circulates in the liquid micronization device 60. After that, the airflow 3 that has passed through the liquid miniaturization device 60 is supplied to the room. Then, in the heat exchange type ventilation device 50b with a humidity control function, by controlling the operation of the dehumidifying device 30 and the operation of the liquid miniaturizing device 60, each state (E state to H state) corresponding to the A state to the D state is performed. It is possible to. Each state will be described below.

In the E state, the air supply air force 3 after heat exchange flows through the dehumidifying device 30 and the liquid miniaturizing device 60 without being dehumidified (dehumidified by the dehumidifying device 30 and humidified by the liquid miniaturizing device 60), and indoors. It is a state of being supplied with air, which corresponds to the A state.

In the F state, the air supply air 3 after heat exchange is dehumidified by the dehumidifying device 30 in the dehumidifying mode, and then the liquid miniaturizing device 60 is circulated without being humidified by the liquid refining device 60, and indoors. It is a state of being supplied with air, which corresponds to the B state.

In the G state, the airflow 3 after heat exchange flows through the dehumidifying device 30 without being dehumidified and heated by the dehumidifying device 30, is humidified by the liquid miniaturizing device 60, and is supplied indoors. It corresponds to the C state.

The H state is a state in which the air supply air 3 after heat exchange is heated by the dehumidifying device 30 in the heating mode, and then humidified by the liquid miniaturizing device 60 to supply air indoors. Corresponds to.

As described above, in the heat exchange type ventilator 50b with a humidity control function, the air supply 3 is supplied indoors in a state controlled to an appropriate humidity by switching the flow of the air flow 3 from the E state to the H state. It is configured to be.

As described above, according to the heat exchange type ventilation device 50b with a humidity control function according to the third embodiment, the following effects can be enjoyed.

(8) The airflow 3 led out from the dehumidifying device 30 to the air supply air passage 5 is supplied to the room without being humidified by the liquid miniaturizing device 60 in the dehumidifying mode, and is supplied to the room by the liquid miniaturizing device 60 in the heating mode. It is humidified and air is supplied to the room. Therefore, the same effect as in (1) above can be enjoyed.

(9) In the heat exchange type ventilator 50b with a humidity control function, each state (E state) without providing a switching damper (switching damper 41, switching damper 43) for each device in the air supply air passage 5 after heat exchange. It is configured to be switchable to (~ G state). With such a configuration, the risk of occurrence of a defect caused by each switching damper is reduced, and the cost of the device can be reduced by reducing the number of members.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It is easy to infer. For example, the numerical values given in the above embodiment are examples, and it is naturally possible to adopt other numerical values.

In the heat exchange type ventilation device 50 with a humidity control function according to the first embodiment, a sensible heat type heat exchange element is used as the heat exchanger 35, but the sensible heat type heat exchange element is a heat exchange element. It is preferable that the members constituting the first flow path 36 and the second flow path 37 of the 12 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 condensation water generated inside the heat exchange element 12 easily flows out to the outside of the heat exchange element 12, which causes a decrease in the heat exchange efficiency of the heat exchanger 35 due to the dew condensation water. It is possible to dehumidify without.

Further, the heat exchange type ventilator 50 with a humidity control function according to the first embodiment is introduced into the liquid miniaturization apparatus 60 by passing the air flow 3 through the dehumidifying apparatus 30 in the heating mode at the time of humidification. The temperature of the air (supply airflow 3 after heat exchange) is increased, but the temperature is not limited to this. For example, when it is winter and there is no need for humidification, each switching damper may be controlled so that the airflow 3 heated by the dehumidifying device 30 is supplied to the room as it is. By doing so, warm air can be blown into the room, so that the load of heating (air conditioning / floor heating) can be reduced. Further, if the airflow 3 heated by the dehumidifying device 30 is ventilated during the drying process of the liquid miniaturizing device 60, the drying time of the device can be shortened, and mold in the device can be prevented. It is also possible to suppress the occurrence.

The heat exchange type ventilator with a humidity control function according to the present invention makes it possible to improve the humidity control performance at the time of dehumidification and humidification. Therefore, the heat exchange type ventilation device that enables heat exchange between indoors and outdoors. It is useful as.

1 House 2 Exhaust flow 3 Air supply 3a 1st airflow 3b 2nd airflow 4 Exhaust air passage 5 Air supply air passage 10 Heat exchange type ventilator 10a Heat exchange type 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 31a Four-way valve 32 Heat exchanger 33 Inflator 34 Heat absorber 35 Heat exchanger 36 First flow path 37 Second flow path 38 Water spraying part 39 Water supply / drainage pipe 40 Switching damper 41 Switching damper 42 Branch damper 43 Switching damper 44 Water channel switching part 44a First water passage 44b Second water passage 45 First temperature sensor 46 Second temperature sensor 50 Heat exchange type with humidity control function Ventilation device 50a Heat exchange type ventilation device with humidity control function 50b Heat exchange type ventilation device with humidity control function 60 Liquid miniaturization device 62 Suction port 63 Air outlet 64 Inner cylinder 65 Suction communication air passage 66 Inner cylinder air passage 67 Ventilation port 68 Outer cylinder 68a Side wall 69 Outer cylinder air passage 70 Water storage part 71 Water receiving part 72 Water supply port 73 Drain port 74 Pumping pipe 75 Rotating plate 76 Motor 77 Liquid mining means 80 Water surface 101 Liquid mining device 102 Treatment room 103 Water storage part 104 rotation Body 105 Porous body 200 Dehumidifier 201 Air suction port 202 Main body case 203 Dehumidifying part 204 Air outlet 205 Compressor 206 Heat radiator 207 Expander 208 Heat exchanger 209 First flow path 210 Second flow path 211 Heat exchanger

Claims (3)

Heat exchange type ventilation that exchanges heat between the exhaust flow that flows through the exhaust air passage for exhausting indoor air to the outside and the air supply that flows through the air supply air passage for supplying outdoor air to the room. With the device
A humidifying device configured to introduce the airflow after heat exchange from the air supply air passage and humidifying the introduced airflow.
A dehumidifying device configured to introduce the airflow after heat exchange from the air supply air passage and dehumidifying the introduced airflow.
It is a heat exchange type ventilation device with a humidity control function.
The dehumidifier includes a refrigerant cycle including a compressor, a radiator, an expander, a heat absorber, and a four-way valve, and air flowing through a first flow path and a second flow, which are arranged on the downstream side of the heat absorber. Includes a heat exchanger that exchanges heat with the air flowing through the path.
The dehumidifying device has a dehumidifying mode in which the flow of the refrigerant in the refrigerant cycle is set as the first direction by the four-way valve to dehumidify the air supply, and the four-way valve controls the flow of the refrigerant in the refrigerant cycle. It has a heating mode in which the air supply is heated as a second direction opposite to one direction.
A part of the air supply air introduced into the dehumidifier is led out to the air supply air passage after flowing through the first flow path of the heat absorber and the heat exchanger, and is introduced into the dehumidifier. The other part of the air supply airflow is led out to the air supply air passage after flowing through the second flow path of the heat exchanger.
The exhaust flow introduced into the dehumidifying device is led out to the exhaust air passage after flowing through the radiator.
In the dehumidifying mode, the air supply led out from the dehumidifying device to the air supply air passage is supplied to the room without being humidified by the dehumidifying device, and in the heating mode, it is humidified by the humidifying device. A heat exchange type ventilation device with a humidity control function that is characterized by supplying air to the room. Further equipped with an air passage switching unit installed in the air supply air passage after heat exchange,
The air passage switching unit is in a state where the air supply after heat exchange flows through the dehumidifying device and is introduced into the humidifying device, and the air supply after heat exchange does not flow through the dehumidifying device and is introduced into the humidifying device. The heat exchange type ventilator with a humidity control function according to claim 1, wherein the state of being introduced into the apparatus can be switched. The dehumidifying device further includes a water spraying portion for spraying water on the radiator.
In the dehumidification mode, the exhaust flow introduced into the dehumidification device is led out to the exhaust air passage after flowing through the radiator in a state where water is sprayed by the water spraying portion. The heat exchange type ventilation device with a humidity control function according to claim 1 or 2.