WO2022018983A1

WO2022018983A1 - Heat exchange ventilation device with air purification function

Info

Publication number: WO2022018983A1
Application number: PCT/JP2021/021377
Authority: WO
Inventors: 陽子石田; 智裕林; 真司吉田; 亮介須賀
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2020-07-22
Filing date: 2021-06-04
Publication date: 2022-01-27

Abstract

An heat exchange ventilation device (50) with an air purification function comprises: a heat exchange ventilation device (10) for exchanging heat between an exhaust air flow (2) circulating through an exhaust air channel (4), which discharges air in an indoor space (11) to an outdoor space (12), and a supply air flow (3) circulating through a supply air channel (5), which supplies air from the outdoor space (12) to the indoors space (11); a humidifier (6d) for adding a component that purifies air together with water to the supply air flow (3) after having exchanged heat, introduced from the supply air channel (5); a heat exchanger (16) for performing, on the upstream side of the humidifier (6d), dehumidification on the supply air flow (3) after having exchanged heat; and a control unit (8) for controlling the heat exchanger (16). When performing humidity adjustment so that the humidity of the supply air flow (3) fed to the indoor space (11) reaches a target setting humidity for the air in the indoor space (11), the control unit (8) controls, on the basis of humidity information relating to an increase in humidity of the supply air flow (3) due to the humidifier (6d), the amount of dehumidification performed on the supply air flow (3) by the heat exchanger (16).

Description

Heat exchange type ventilation device with air purification function

This disclosure relates to a heat exchange type ventilation device with an air purification function that disinfects a target space such as indoors while performing heat exchange ventilation.

As a conventional heat exchange type ventilator with an air purification function, air conditioning that disinfects the indoor space by contacting the air supplied from the outside to the inside with the gas-liquid contact member containing hypochlorous acid and releasing it. The system is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-133521

However, in the conventional air conditioning system, hypochlorous acid is released together with water by using a humidifier, a two-fluid nozzle, or the like. For this reason, the humidity in the target space where hypochlorous acid was released increased, and there was a possibility that comfort would be impaired especially in the summer of Japan, where the relative humidity is high.

The present disclosure provides a heat exchange type ventilator with an air purification function capable of suppressing an increase in humidity due to the release of hypochlorous acid.

The heat exchange type ventilator with an air purification function according to the present disclosure has an exhaust flow flowing through an exhaust air passage that discharges air in an indoor space to an outdoor space, and an air supply air passage that supplies air in an outdoor space to an indoor space. A heat exchange type ventilation device that exchanges heat with the circulating air supply, and an air purification unit that adds a component that purifies the air together with water to the air supply after heat exchange introduced from the air supply air passage. On the upstream side of the air purification unit, a heat exchange unit that dehumidifies the air supply air after heat exchange and a control unit that controls the heat exchange unit are provided. When the control unit adjusts the humidity of the air supply air supply supplied to the indoor space to the target setting humidity of the air in the indoor space, the control unit exchanges heat based on the humidity information regarding the increase in the humidity of the air supply air flow by the air purification unit. Controls the amount of dehumidification for the air supply by the unit.

According to the present disclosure, it is possible to provide a heat exchange type ventilator with an air purification function capable of suppressing an increase in humidity due to the release of hypochlorous acid.

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 disclosure in a house. FIG. 2 is a schematic diagram showing the configuration of the heat exchange type ventilation device according to the premise example of the present disclosure. FIG. 3 is a schematic view showing the configuration of the heat exchange type ventilation device with an air purification function according to the first embodiment of the present disclosure. FIG. 4 is a diagram showing a humidity change of the supply air flow flowing through the air purification device according to the first embodiment of the present disclosure. FIG. 5 is a diagram showing the humidity change of the supply airflow flowing through the air purification device according to the first embodiment of the present disclosure for each operating state condition. FIG. 6 is a block diagram showing a configuration of a control unit in the air purification device according to the first embodiment of the present disclosure. FIG. 7 is a flowchart showing a processing procedure by the control unit according to the first embodiment of the present disclosure. FIG. 8 is a schematic view showing an installation state of the heat exchange type ventilation device according to the premise example of the present disclosure in a house. FIG. 9 is a schematic diagram showing the configuration of the heat exchange type ventilation device according to the premise example of the present disclosure. FIG. 10 is a schematic view showing the configuration of the heat exchange type ventilation device with an air purification function according to the second embodiment of the present disclosure. FIG. 11 illustrates the tendency of temperature and humidity changes due to the first operation and the second operation in the region divided by the reference values of temperature and humidity in the heat exchange type ventilation device with an air purification function according to the second embodiment of the present disclosure. It is a figure to do. FIG. 12 is a schematic block diagram showing a configuration of a control unit in the heat exchange type ventilation device with an air purification function according to the second embodiment of the present disclosure. FIG. 13 is a flowchart showing a process performed by the control unit in the heat exchange type ventilation device with an air purification function according to the second embodiment of the present disclosure.

According to such a configuration, even if a component (for example, hypochlorous acid) that purifies the air while being humidified by the air purification unit is added to the air supply air after heat exchange, the heat exchange unit reaches the target set humidity. Dehumidify according to the situation. Therefore, it is possible to suppress excessive humidification of the indoor space. That is, it is possible to provide a heat exchange type ventilation device with an air purification function capable of suppressing an increase in humidity due to the release of a component that purifies the air.

Further, in the heat exchange type ventilator with an air purification function according to the present disclosure, the control unit has a dehumidification amount higher than the dehumidification amount when the heat exchange unit dehumidifies the humidity of the supply air flow introduced into the heat exchange unit to the target set humidity. , The amount of dehumidification for the air supply is controlled to increase. As a result, the increase in the humidity of the air supply air by the air purification unit is suppressed by at least the amount of dehumidification with respect to the air supply airflow is increased. Therefore, it is possible to suppress an increase in humidity due to the release of the component that purifies the air.

Further, in the heat exchange type ventilation device with an air purification function according to the present disclosure, the control unit first dehumidifies by the heat exchange unit when the humidity increase to the air supply by the air purification unit is the first humidification amount. If the dehumidification amount is used and the humidity increase to the air supply by the air purification unit is larger than the first dehumidification amount, the dehumidification by the heat exchange unit is larger than the first dehumidification amount. It is controlled to be done in. As a result, the dehumidification amount by the heat exchange unit is set according to the humidification amount (addition amount of the component that purifies the air) when the component that purifies the air while being humidified by the air purification unit is added. Therefore, it is possible to adjust the humidity of the air supply air supplied to the indoor space so that the humidity of the air supply in the indoor space becomes the target setting humidity of the air in the indoor space, while adding the components for purifying the air necessary for the indoor space.

Further, in the heat exchange type ventilator with an air purification function according to the present disclosure, the air purification unit purifies the air supply air introduced inside by centrifugally crushing the water containing the component for purifying the air. It is preferable to add a component that performs the above. As a result, by changing the rotation speed during centrifugal crushing, it is possible to control the particle size or crushing amount of the water to be crushed, and by extension, the component that purifies the air added to the air supply introduced into the device. The amount of addition can be controlled.

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

(Premise example)
First, refer to FIGS. 1 and 2 for the heat exchange type ventilator 10 according to the premise example of the present disclosure, which is a premise for explaining the heat exchange type ventilator 50 with an air purification function according to the embodiment of the present disclosure. I will explain. FIG. 1 is a schematic view showing an installation state of the heat exchange type ventilation device 10 according to the premise example of the present disclosure in a house. FIG. 2 is a schematic diagram showing the configuration of the heat exchange type ventilation device 10 according to the premise example of the present disclosure.

In FIG. 1, a heat exchange type ventilation device 10 is installed indoors (behind the ceiling, etc.) of the house 1. The heat exchange type ventilator 10 is a device (first) that ventilates while exchanging heat between the air in the indoor space 11 (hereinafter, also simply referred to as “indoor”) and the air in the outdoor space 12 (hereinafter, also simply referred to as “outdoor”). Two types of ventilation equipment).

As shown in FIG. 1, the exhaust flow 2 is discharged from the indoor space 11 such as the living room to the outdoor space 12 via the indoor exhaust port 9a, the heat exchange type ventilation device 10 and the outdoor exhaust port 9b as shown by the black arrow. .. That is, 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 indoor space 11 from the outdoor space 12 via the outdoor air supply port 9c, the heat exchange type ventilation device 10 and the indoor air supply port 9d as shown by the white arrow. That is, the supply airflow 3 is a flow of air taken in from the outside to the inside. For example, in winter in Japan, the exhaust flow 2 is 20 ° C to 25 ° C, while 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 ventilation to suppress the release of heat to the outside (heats the supply airflow 3 by the exhaust flow 2). There is.

As shown in FIG. 2, the heat exchange type ventilation device 10 includes a main body case 10f, an inside air port 10a, an exhaust port 10b, an outside air port 10c, an air supply port 10d, a heat exchange element 10e, an exhaust fan 10g, an air supply fan 10h, and an exhaust. It is provided with an air passage 4 and an air supply air passage 5.

The main body case 10f is the outer frame of the heat exchange type ventilator 10. An inside air port 10a, an exhaust port 10b, an outside air port 10c, and an air supply port 10d are formed on the outer periphery of the main body case 10f. The inside air port 10a is a suction port for sucking the exhaust flow 2 into the heat exchange type ventilation device 10, and communicates with the indoor exhaust port 9a (see FIG. 1) via a duct or the like. The exhaust port 10b is a discharge port for discharging the exhaust flow 2 from the heat exchange type ventilation device 10 to the outside, and communicates with the outdoor exhaust port 9b (see FIG. 1) via a duct or the like. The outside air port 10c is a suction port for sucking the air supply air 3 into the heat exchange type ventilation device 10, and communicates with the outdoor air supply port 9c (see FIG. 1) via a duct or the like. The air supply port 10d is a discharge port for discharging the air supply air 3 indoors from the heat exchange type ventilation device 10, and communicates with the indoor air supply port 9d via a duct or the like.

A heat exchange element 10e, an exhaust fan 10g, and an air supply fan 10h are mounted inside the main body case 10f. Further, an exhaust air passage 4 and an air supply air passage 5 are configured inside the main body case 10f. The heat exchange element 10e is a total heat type heat exchange element, and heat exchanges (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 supply air passage 5. It is a member for performing. The exhaust fan 10g is installed in the vicinity of the exhaust port 10b, and is a blower for sucking the exhaust flow 2 from the inside air port 10a and discharging it from the exhaust port 10b. The air supply fan 10h is installed in the vicinity of the air supply port 10d, and is a blower for sucking the air supply airflow 3 from the outside air port 10c and discharging it from the air supply port 10d. The exhaust air passage 4 includes an air passage that communicates the inside air port 10a and the exhaust port 10b. The air supply air passage 5 includes an air passage that communicates the outside air port 10c and the air supply port 10d. The exhaust flow 2 sucked from the inside air port 10a by driving the exhaust fan 10g is discharged to the outside from the exhaust port 10b via the heat exchange element 10e and the exhaust fan 10g. Further, the air supply airflow 3 sucked from the outside air port 10c by driving the air supply fan 10h is supplied indoors from the air supply port 10d via the heat exchange element 10e and the air supply fan 10h.

When performing heat exchange ventilation, the heat exchange type ventilation device 10 operates an exhaust fan 10g and an air supply fan 10h, and has an exhaust flow 2 flowing through the exhaust air passage 4 in the heat exchange element 10e and an air supply air passage 5. Heat is exchanged with the air supply air 3 circulating in the air. As a result, the heat exchange type ventilation device 10 transfers the heat of the exhaust flow 2 released to the outside to the air supply airflow 3 which takes in the heat indoors when ventilating, suppresses the release of the heat to the outside, and indoors. Recover heat. As a result, for example, in winter in Japan, it is possible to suppress a decrease in indoor temperature due to low-temperature outdoor air during ventilation. On the other hand, for example, in the summer of Japan, when ventilation is performed, it is possible to suppress an indoor temperature rise due to high temperature outdoor air.

(Embodiment 1)
First, with reference to FIG. 3, the heat exchange type ventilation device 50 with an air purification function according to the first embodiment will be described. FIG. 3 is a schematic diagram showing the configuration of the heat exchange type ventilation device 50 with an air purification function according to the first embodiment of the present disclosure. In the following description, the airflow (exhaust flow 2 and supply airflow 3) or air passage (exhaust air passage 4 and supply air passage 5) after heat exchange passes through the heat exchange element 10e in the heat exchange type ventilation device 10. The airflow or air passage after the heat is shown.

As shown in FIG. 3, the heat exchange type ventilation device 50 with an air purification function according to the first embodiment imparts an air purification function to the air supply air passage 5 of the heat exchange type ventilation device 10 according to the premise example. It has a configuration in which an air purifying device 6 is connected as a means for the ventilation.

The air purification device 6 performs a cooling treatment (dehumidification treatment) on the supply airflow 3 after heat exchange from the heat exchange type ventilation device 10 as necessary. Further, the air purifying device 6 is a device that includes a purifying component (a component that purifies the air) together with the finely divided water in the air supply air 3 that circulates inside. Specifically, as shown in FIG. 3, the air purification device 6 includes a main body case 6 g, an air flow inlet 6a, an air flow outlet 6c, a humidifier 6d, and a heat exchanger 16. The humidifier 6d corresponds to the "air purification unit" in the claims, and the heat exchanger 16 corresponds to the "heat exchange unit" in the claims.

The main body case 6 g is the outer frame of the air purification device 6. An airflow inlet 6a and an airflow outlet 6c are formed on the outer periphery of the main body case 6g. A humidifier 6d and a heat exchanger 16 are attached to the inside of the main body case 6g. Further, inside the main body case 6g, an air passage that communicates between the air supply inlet 6a and the airflow outlet 6c is configured as a part of the air supply air passage 5.

The air supply inlet 6a is an intake port that takes in the air supply 3 from the heat exchange type ventilation device 10 into the air purification device 6. The air supply inlet 6a is communicated with the air supply port 10d of the heat exchange type ventilation device 10 via a duct 7 forming a part of the air supply air passage 5.

The airflow outlet 6c is a discharge port that discharges the airflow 3 (or the airflow 3 to which the component that purifies the air is not added) to the air supply air passage 5 as the air supply SA. ..

The humidifier 6d is a unit for humidifying the air taken in inside (air supply airflow 3) and adding a purification component (component for purifying air). Then, when the humidifier 6d humidifies the air, the humidifier 6d contains the purifying component together with the water finely divided with respect to the air. More specifically, the humidifier 6d has a humidifying motor 6e and a humidifying nozzle 6f. The humidifier 6d uses a humidifying motor 6e to rotate the humidifying nozzle 6f, and centrifugally sucks up the water (water containing a purification component) stored in the water storage unit (not shown) of the humidifier 6d. It is configured as a centrifugal crushing type in which water is contained in the air passing through the humidifier 6d by scattering, colliding and crushing the water in the surroundings (centrifugal direction of the humidifying motor 6e). Then, the humidifier 6d changes the rotation speed (hereinafter, also defined as a rotation output value) of the humidifying motor 6e according to the output signal from the control unit 8 described later, thereby humidifying the air (humidifying amount). To adjust. The humidification amount can be said to be an additional amount that adds a purification component to the air.

The supply of water containing a purifying component to the water storage section (not shown) of the humidifier 6d includes the purifying component by adding (adding) the purifying component to the water supplied from the water supply pipe of a water supply or the like. It is performed by the purification component supply unit (not shown) that produces water. Here, as the purifying component, for example, hypochlorous acid having bactericidal or deodorant properties is used. That is, indoor sterilization or deodorization can be performed by including the hypochlorous acid aqueous solution generated by adding hypochlorous acid to water in the air flow 3 and supplying it indoors.

The heat exchanger 16 is a member arranged on the upstream side of the humidifier 6d in the air purification device 6 for cooling or heating the introduced air (air supply airflow 3). Then, the heat exchanger 16 changes the output state (heating, cooling, or off) of the heat exchanger 16 according to the output signal from the control unit 8 described later. Thereby, the cooling capacity (cooling amount) or the heating capacity (heating amount) with respect to the introduced airflow 3 is adjusted. In the heat exchanger 16, cooling the introduced air means dehumidifying the introduced air. Therefore, the cooling capacity (cooling amount) for the supply airflow 3 can be said to be the dehumidifying capacity (dehumidification amount) for the supply airflow 3.

More specifically, the heat exchanger 16 functions as a heat absorber or a radiator in a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber. The heat exchanger 16 is configured to absorb heat (cool) or dissipate heat (heat) when the refrigerant introduced from the air conditioner (outdoor unit 20) circulates inside. Here, the heat exchanger 16 is an indoor unit built in the air purification device 6 installed in the indoor space 11, and the outdoor unit 20 is an outdoor unit installed in the outdoor space 12. The outdoor unit 20 includes a compressor 20a, an expander 20b, an outdoor heat exchanger 20c, a blower fan 20d, and a four-way valve 20e.

Next, the refrigeration cycle composed of the heat exchanger 16 and the outdoor unit 20 will be described.

A four-way valve 20e is connected to the refrigeration cycle. The heat exchanger 16 is in a cooling mode (dehumidifying mode) in which the air (supply airflow 3) is cooled and dehumidified by the flow of the refrigerant in the first direction by the four-way valve 20e, and in the second direction by the four-way valve 20e. It has a heating mode state in which the air (supply airflow 3) is heated by the flow of the refrigerant.

Here, the four-way valve 20e is a device (reversible valve) for switching the flow direction of the refrigerant flowing in the refrigerant circuit 21 in the refrigeration cycle. More specifically, the four-way valve 20e is connected between the compressor 20a and the heat exchanger 16 and between the compressor 20a and the outdoor heat exchanger 20c. The four-way valve 20e has a cooling mode in which the compressor 20a, the outdoor heat exchanger 20c, the expander 20b, and the heat exchanger 16 circulate the refrigerant in this order (first direction), and the compressor 20a and the heat exchanger. 16 is switched between the heating mode in which the expander 20b and the outdoor heat exchanger 20c are circulated in this order (second direction). That is, the flow of the refrigerant is in the opposite direction in the cooling mode and the heating mode. The cooling mode can also be said to be a dehumidification mode. Hereinafter, the cooling mode and the heating mode will be described.

[Cooling mode]
In the cooling mode, the refrigerant flows in the above-mentioned first direction.

The compressor 20a compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle, increases the pressure, and raises the temperature.

The outdoor heat exchanger 20c functions as a radiator. The outdoor heat exchanger 20c exchanges heat between the refrigerant gas whose high temperature and high pressure are increased by the compressor 20a and the air (air OA of the outdoor space 12 blown by the blower fan 20d), thereby exchanging heat to the outside (air OA in the outdoor space 12). Discharge to outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the outdoor heat exchanger 20c, the temperature of the introduced refrigerant gas is higher than the temperature of the air. Therefore, when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The blower fan 20d blows the air OA of the outdoor space 12 toward the outdoor heat exchanger 20c.

The expander 20b decompresses the high-pressure refrigerant liquefied by the outdoor heat exchanger 20c to the original low-temperature and low-pressure liquids.

The heat exchanger 16 functions as a heat absorber. In the heat exchanger 16, the liquid refrigerant flowing through the expander 20b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the heat exchanger 16, the temperature of the introduced refrigerant is lower than the temperature of the air (supply airflow 3 after the introduced heat exchange). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

From the above, the heat exchanger 16 cools the introduced air (air supply airflow 3).

[Heating mode]
In the heating mode, the refrigerant flows in the second direction described above.

Similar to the dehumidification mode, the compressor 20a compresses the low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle, and raises the pressure to raise the temperature.

The heat exchanger 16 functions as a radiator. The heat exchanger 16 performs the same function as the outdoor heat exchanger 20c in the cooling mode. Specifically, the heat exchanger 16 exchanges heat between the refrigerant gas having a high temperature and high pressure by the compressor 20a and air (the air supply airflow 3 after the heat exchange to be introduced), thereby exchanging heat to the outside. Discharge to (outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the heat exchanger 16, since the temperature of the introduced refrigerant gas is higher than the temperature of the air, when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The expander 20b decompresses the high-pressure refrigerant liquefied by the heat exchanger 16 to the original low-temperature and low-pressure liquids.

The outdoor heat exchanger 20c functions as a heat absorber. The outdoor heat exchanger 20c performs the same function as the heat exchanger 16 in the dehumidification mode. Specifically, in the outdoor heat exchanger 20c, the liquid refrigerant flowing through the expander 20b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the outdoor heat exchanger 20c, the temperature of the introduced refrigerant is lower than the temperature of the air (air OA of the outdoor space 12 blown by the blower fan 20d). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

From the above, the heat exchanger 16 heats the introduced air (air supply airflow 3).

The air purification device 6 is configured as described above, and adds a purification component (component for purifying air) by a cooling mode in the summer when it is desired to dehumidify the air (air supply airflow 3) introduced from the outside. Further, in the winter when it is desired to humidify the air introduced from the outside (air supply airflow 3), a purification component (component for purifying air) is added by the heating mode.

In the following explanation, it is assumed that the purification component (component that purifies the air) is added by the cooling mode in the summer of Japan.

Next, with reference to FIG. 4, the humidity control for the supply airflow 3 by the air purification device 6 will be described. FIG. 4 is a diagram showing a humidity change of the supply airflow 3 flowing through the air purification device 6 according to the first embodiment. More specifically, FIG. 4 is a diagram showing the humidity that changes according to each treatment in the heat exchanger 16 and the humidifier 6d constituting the air purification device 6 in chronological order. And FIG. 4 shows the humidity change by the conventional dehumidification control process (comparative example) and the humidity change by the dehumidification control process (example) of the present embodiment, respectively.

In FIG. 4, the vertical axis is the humidity of the airflow 3 and the horizontal axis is the elapsed time. Then, the elapsed time is divided in the order of region T1, region T2, region T3, and region T4 with the passage of time. The region T1 is a region showing a change in humidity of the air supply air 3 after the heat exchange type ventilator 10 is distributed and before it is introduced into the heat exchanger 16. The region T2 is a region showing a humidity change of the supply airflow 3 flowing through the heat exchanger 16. The region T3 is a region showing a humidity change of the supply airflow 3 flowing through the humidifier 6d. The region T4 is a region showing a humidity change of the supply airflow 3 derived from the humidifier 6d.

First, the humidity of the supply airflow 3 in the region T1 is the humidity H0. Then, in the comparative example, in the region T2, the humidity of the supply airflow 3 is reduced to the humidity H2, which is the target setting humidity of the indoor air. That is, the heat exchanger 16 dehumidifies with a dehumidifying amount in which the humidity of the supply airflow 3 changes from humidity H0 to humidity H2. Then, in the region T3, a purification component is added to the supply airflow 3 together with water to increase the humidity of the supply airflow 3 to the humidity H1. That is, the humidifier 6d adds a purifying component while humidifying with a humidifying amount in which the humidity of the supply airflow 3 changes from humidity H2 to humidity H1. Then, in the region T4, the supply airflow 3 maintains the humidity H1 and is supplied to the indoor space 11 at a humidity higher than the target set humidity (humidity H2). Therefore, in the comparative example, since the increase in humidity due to the humidifier 6d is not taken into consideration, the humidity control of the indoor air is controlled in the over-humidified state. As a result, the comfort of the indoor space 11 may be impaired.

On the other hand, in the embodiment, the humidity of the supply airflow 3 in the region T2 is lower than the target set humidity (humidity H2) with respect to the supply airflow 3 having the humidity H0 in the region T1. To reduce to. That is, the heat exchanger 16 dehumidifies with a dehumidifying amount in which the humidity of the supply airflow 3 changes from humidity H0 to humidity H3. Then, in the region T3, a purification component is added to the supply airflow 3 together with water to increase the humidity of the supply airflow 3 to the humidity H2. That is, the humidifier 6d adds a purifying component while humidifying with a humidifying amount in which the humidity of the supply airflow 3 changes from humidity H3 to humidity H2. Then, in the region T4, the supply airflow 3 maintains the humidity H2 and is supplied to the indoor space 11 at the same humidity as the target set humidity. Therefore, in the embodiment, the humidity increase by the humidifier 6d is reflected in the dehumidification amount by the heat exchanger 16, and the humidity control of the indoor air is performed in a state where the supply airflow 3 reaches the target set humidity. As a result, it becomes possible to supply the purifying component to the indoor space 11 while maintaining the comfort of the indoor space 11.

Subsequently, with reference to FIG. 5, the humidity control for the supply airflow 3 that changes depending on the operating condition of the air purification device 6 will be described. FIG. 5 is a diagram showing the humidity change of the supply airflow 3 flowing through the air purification device 6 according to the first embodiment for each operating state condition. The upper graph of FIG. 5 is a diagram corresponding to FIG. 4, and shows the humidity change of the supply airflow 3 for each operating condition. The lower table of FIG. 5 shows the detailed contents of the operating condition. Here, the operating state condition will be described as three stages according to the release level of the purification component to the supply airflow 3 supplied to the indoor space 11.

As shown in FIG. 5, the operating condition conditions are the release amount A (low release), the release amount B (standard release), and the release amount C (high release) according to the release level of the purification component by the humidifier 6d. It is selected from three stages. The air purification device 6 executes the operation control specified by the selected operating state conditions (first operating state to third operating state). The amount of the purification component released to the air supply air 3 is in the relationship of the amount A <the amount B <the amount C released.

[First operating state]
When the amount of the purification component released to the supply airflow 3 is the amount of discharge A, the air purification device 6 executes the operation operation based on the first operating state. Then, in the first operating state, the air purifying device 6 rotates the humidifying motor 6e of the humidifier 6d at the rotation speed A1 and cools (dehumidifies) the heat exchanger 16 in the on state A2. Here, the rotation speed A1 is a rotation condition that realizes a humidification amount that satisfies the difference between the humidity H3a and the target set humidity (humidity H2) with respect to the supply airflow 3 flowing through the humidifier 6d. Further, the on state A2 is a cooling condition that realizes a dehumidifying amount that removes the difference between the humidity H0 and the humidity H3a with respect to the supply airflow 3 flowing through the heat exchanger 16.

That is, the humidity H3a, which is lower than the target set humidity (humidity H2), is reduced in the region T2 with respect to the supply airflow 3 having the humidity H0 in the region T1. Then, in the region T3, a purifying component is added to the supply airflow 3 together with water to increase the humidity to H2. Then, in the region T4, the supply airflow 3 maintains the humidity H2 and is supplied to the indoor space 11 at the same humidity as the target set humidity. Therefore, the supply airflow 3 in the humidity H0 after the heat exchange is dehumidified to the humidity H3a by the heat exchanger 16 in the region T2. Therefore, even if the region T3 is humidified by the humidifier 6d at the rotation speed A1, the final humidity is the humidity H2, which is the target set humidity. Therefore, the supply airflow 3 can be supplied to the indoor space 11 without being excessively humidified.

[Second operating state]
When the amount of the purification component released to the air supply air 3 is the amount B, the air purification device 6 executes the operation operation based on the second operating state. Then, in the second operating state, the air purifying device 6 rotates the humidifying motor 6e of the humidifier 6d at the rotation speed B1 and cools (dehumidifies) the heat exchanger 16 in the on state B2. Here, the rotation speed B1 is a rotation condition that realizes a humidification amount that satisfies the difference between the humidity H3b and the target set humidity (humidity H2) with respect to the supply airflow 3 flowing through the humidifier 6d. Further, the on state B2 is a cooling condition that realizes a dehumidifying amount that removes the difference between the humidity H0 and the humidity H3b with respect to the supply airflow 3 flowing through the heat exchanger 16.

That is, the humidity H3b, which is lower than the target set humidity (humidity H2), is reduced in the region T2 with respect to the supply airflow 3 having the humidity H0 in the region T1. Then, in the region T3, a purifying component is added to the supply airflow 3 together with water to increase the humidity to H2. Then, in the region T4, the supply airflow 3 maintains the humidity H2 and is supplied to the indoor space 11 at the same humidity as the target set humidity. Therefore, the supply airflow 3 in the humidity H0 after the heat exchange is dehumidified to the humidity H3b by the heat exchanger 16 in the region T2. Therefore, even if the region T3 is humidified by the humidifier 6d at the rotation speed B1, the final humidity is the humidity H2, which is the target set humidity. Therefore, the supply airflow 3 can be supplied to the indoor space 11 without being excessively humidified.

[Third operating condition]
When the amount of the purification component released to the supply airflow 3 is the amount of discharge C, the air purification device 6 executes the operation operation based on the third operating state. Then, in the third operating state, the air purifying device 6 rotates the humidifying motor 6e of the humidifier 6d at the rotation speed C1 and cools (dehumidifies) the heat exchanger 16 in the on state C2. Here, the rotation speed C1 is a rotation condition that realizes a humidification amount that satisfies the difference between the humidity H3c and the target set humidity (humidity H2) with respect to the supply airflow 3 flowing through the humidifier 6d. Further, the on state C2 is a cooling condition that realizes a dehumidifying amount that removes the difference between the humidity H0 and the humidity H3c with respect to the supply airflow 3 flowing through the heat exchanger 16.

That is, the humidity H3c, which is lower than the target set humidity (humidity H2), is reduced in the region T2 with respect to the supply airflow 3 having the humidity H0 in the region T1. Then, in the region T3, a purifying component is added to the supply airflow 3 together with water to increase the humidity to H2. Then, in the region T4, the supply airflow 3 maintains the humidity H2 and is supplied to the indoor space 11 at the same humidity as the target set humidity. Therefore, the supply airflow 3 in the humidity H0 after the heat exchange is dehumidified to the humidity H3c by the heat exchanger 16 in the region T2. Therefore, even if the region T3 is humidified by the humidifier 6d at the rotation speed C1, the final humidity is the humidity H2, which is the target set humidity. Therefore, the supply airflow 3 can be supplied to the indoor space 11 without being excessively humidified.

As described above, in the air purification device 6, the dehumidification amount by the heat exchanger 16 is set according to the humidification amount (addition amount of the purification component) when the purification component is added. Therefore, while adding the purifying component necessary for the indoor space 11, the humidity of the supply airflow 3 supplied to the indoor space 11 can be adjusted so as to be the target set humidity of the air in the indoor space 11.

Next, the control unit 8 of the air purification device 6 will be described with reference to FIG. FIG. 6 is a schematic block diagram showing the configuration of the control unit 8 in the air purification device 6 according to the first embodiment.

As shown in FIG. 6, the control unit 8 includes an input unit 8a, a processing unit 8b, an output unit 8c, a storage unit 8d, and a timing unit 8e.

The input unit 8a receives the first information regarding the operation start instruction or the operation stop instruction from the operation panel 18 and the second information regarding the temperature of the air RA of the indoor space 11 from the humidity detection unit 15. The input unit 8a outputs the received information to the processing unit 8b.

Here, the operation panel 18 is a terminal for inputting user input information regarding the air purification device 6 (for example, presence / absence of addition of purification component, presence / absence of humidification, addition level of purification component, humidification level, etc.), and is wireless or It is connected to the control unit 8 by wire so as to be communicable. The first information also includes user input information. The addition level and the humidification level of the purification component are set, for example, in three stages of "high", "standard" and "low", respectively.

Further, the humidity detection unit 15 is a sensor installed in the exhaust air passage 4 before heat exchange in the heat exchange type ventilation device 10 and detects the humidity of the air RA from the indoor space 11. The humidity detection unit 15 may be installed in a typical indoor space 11 among a plurality of indoor spaces 11.

The storage unit 8d contains third information regarding the additional treatment setting in the additional operation of the purifying component (water containing the purifying component) with respect to the air supply 3 flowing through the humidifier 6d, and the cooling operation with respect to the air supply 3 flowing through the heat exchanger 16. The fourth information regarding the cooling process setting in the above and the fifth information regarding the setting information corresponding to the user input information are stored. The storage unit 8d outputs the stored third information to the fifth information to the processing unit 8b. The additional treatment setting in the additional operation of the purification component can be said to be the humidification treatment setting in the humidification operation of the humidifier 6d provided in the air purification device 6. Further, the cooling treatment setting in the cooling operation for the supply airflow 3 can be said to be the dehumidification treatment setting in the dehumidification / cooling operation for the supply airflow 3.

The timekeeping unit 8e outputs the sixth information regarding the current time to the processing unit 8b.

The processing unit 8b receives the first information and the second information from the input unit 8a, the third information to the fifth information from the storage unit 8d, and the sixth information from the timekeeping unit 8e. The processing unit 8b uses the received first information to sixth information to provide control information (rotational output value) regarding the additional operation based on the additional processing setting and control information (cooling output value) regarding the cooling operation based on the cooling processing setting. Identify. The processing unit 8b outputs the specified control information (rotational output value and cooling output value) to the output unit 8c. Here, the rotation output value is an output value related to the rotation speed for rotating the humidifying motor 6e of the humidifier 6d. The cooling output value is an output value that changes the cooling capacity of the heat exchanger 16. The rotation output value and the cooling output value include output values for stopping the respective operation operations.

The output unit 8c outputs the control information (rotational output value) received from the processing unit 8b to the humidifier 6d (humidifying motor 6e). Further, the output unit 8c outputs the control information (cooling output value) received from the processing unit 8b to the heat exchanger 16. Then, the humidifier 6d executes an additional operation operation according to the rotation output value output from the output unit 8c. Further, the heat exchanger 16 executes a cooling operation operation based on the cooling output value output from the output unit 8c.

As described above, the control unit 8 controls the cooling operation (dehumidifying operation) and the addition operation of the purification component with respect to the supply airflow 3 flowing through the air purification device 6, respectively.

Next, with reference to FIG. 7, the processing procedure of humidity control accompanying the addition operation of the purification component to the air supply air 3 performed by the air purification device 6 in the summer of Japan will be described. FIG. 7 is a flowchart showing a processing procedure by the control unit 8 according to the first embodiment.

First, as shown in FIG. 7, the control unit 8 starts processing in response to a control signal regarding the start of operation from the operation panel 18.

The input unit 8a of the control unit 8 acquires the humidity information (humidity value) of the air RA from the indoor space 11 transmitted from the humidity detection unit 15 (step S01).

The control unit 8 uses the humidifier 6d to purify the components based on the information output from the input unit 8a and the storage unit 8d (target set humidity of indoor air, set additional level of purification component, set humidification level, etc.). The amount of humidification associated with the addition of the above is specified (step S02). That is, the control unit 8 specifies the control information (rotational output value) regarding the humidification operation.

Next, the control unit 8 uses the heat exchanger 16 based on the amount of humidification by the specified humidifier 6d so that the air flow 3 supplied indoors through the air purification device 6 has the target set humidity. The amount of dehumidification is specified (step S03). That is, the control unit 8 specifies the control information (cooling output value) regarding the dehumidifying operation.

Subsequently, the control unit 8 operates the humidifier 6d (humidification motor 6e) based on the specified control information (rotational output value or cooling output value) to start the humidification operation, and the heat exchanger 16 (outdoor). The compressor 20a) of the machine 20 is operated to start the dehumidifying operation (step S04). As a result, the operation of the air purification device 6 (humidifier 6d and heat exchanger 16) is executed, and the air supply air 3 flowing through the air purification device 6 is supplied indoors in a state where the target set humidity is reached.

If the predetermined time starting from step S04 has not elapsed during the operation of the air purification device 6 (No in step S05), the control unit 8 continues the operation of the air purification device 6 as it is. (Return to step S05). Here, the predetermined time is a time measured with the operation time point of the air purification device 6 in step S04 as the start time, and is set to, for example, 5 minutes.

On the other hand, when the predetermined time has elapsed (Yes in step S05), the control unit 8 determines whether or not a control signal for stopping the operation of the air purification device 6 has been input (step S06). As a result, when the control signal for stopping the operation of the air purification device 6 is not input (No in step S06), the control unit 8 returns to step S01, acquires the humidity information of the indoor air again, and obtains the humidity information of the indoor air again. The above-mentioned steps S02 to S06 are repeated. On the other hand, when a control signal for stopping the operation of the air purification device 6 is input (Yes in step S06), the control unit 8 stops the humidifier 6d (humidifying motor 6e) and stops the humidifying operation. , The heat exchanger 16 (compressor 20a of the outdoor unit 20) is stopped to stop the dehumidifying operation (step S07). Then, the control unit 8 ends the operation of the air purification device 6. As a result, the air purification device 6 is in a state of waiting for an operation start instruction from the operation panel 18.

As described above, according to the heat exchange type ventilation device 50 with an air purification function according to the present embodiment, the following effects can be enjoyed.

(1) The heat exchange type ventilation device 50 with an air purification function supplies the exhaust flow 2 flowing through the exhaust air passage 4 that discharges the air of the indoor space 11 to the outdoor space 12 and the air of the outdoor space 12 to the indoor space 11. Air purification together with water for the heat exchange type ventilation device 10 that exchanges heat with the air supply air 3 flowing through the air supply air passage 5 and the air supply air flow 3 after heat exchange introduced from the air supply air passage 5. A heat exchanger 6d that adds a component to perform the above, a heat exchanger 16 that dehumidifies the air supply air 3 after heat exchange on the upstream side of the humidifier 6d, and a control unit 8 that controls the heat exchanger 16. Equipped with. When the control unit 8 adjusts the humidity so that the humidity of the air flow 3 supplied to the indoor space 11 becomes the target set humidity of the air in the indoor space 11, the control unit 8 obtains humidity information regarding the humidity increase of the air flow 3 by the humidifier 6d. Based on this, the amount of dehumidification with respect to the air flow 3 by the heat exchanger 16 is controlled.

As a result, even if a component (for example, hypochlorite) that purifies the air while being humidified by the humidifier 6d is added to the supply airflow 3 after heat exchange, the heat exchanger 16 responds to the target set humidity. Dehumidify. Therefore, excessive humidification of the indoor space 11 can be suppressed. That is, the heat exchange type ventilation device 50 with an air purification function can be used, which can suppress an increase in humidity due to the release of a component for purifying air.

(2) In the heat exchange type ventilator 50 with an air purification function, the dehumidification amount when the heat exchanger 16 dehumidifies the humidity of the supply airflow 3 introduced into the heat exchanger 16 to the target set humidity by the control unit 8. Rather, the amount of dehumidification with respect to the supply airflow 3 is controlled to be increased. As a result, the increase in humidity of the airflow 3 by the humidifier 6d is suppressed by at least the amount of dehumidification with respect to the airflow 3 is increased. Therefore, it is possible to suppress an increase in humidity due to the release of the component that purifies the air.

(3) In the heat exchange type ventilation device 50 with an air purification function, the increase in humidity to the supply airflow 3 by the humidifier 6d by the control unit 8 is the first humidification amount (for example, the humidification amount in the first operating state). In this case, the dehumidification by the heat exchanger 16 is performed by the first dehumidifying amount (for example, the dehumidifying amount in the first operating state), and the humidity increase to the air supply 3 by the humidifier 6d is larger than the first humidifying amount. (2) In the case of a humidifying amount (for example, a humidifying amount in the second operating state), a second dehumidifying amount (for example, a dehumidifying amount in the second operating state) in which the dehumidification by the heat exchanger 16 is larger than the first dehumidifying amount. ) To control. As a result, the dehumidification amount by the heat exchanger 16 is set according to the humidification amount (addition amount of the component that purifies the air) when the component that purifies the air while being humidified by the humidifier 6d is added. Therefore, while adding the components for purifying the air necessary for the indoor space 11, the humidity of the supply airflow 3 supplied to the indoor space 11 is adjusted so as to be the target set humidity of the air in the indoor space 11. Can be done.

(4) In the heat exchange type ventilator 50 with an air purification function, the humidifier 6d purifies the air to the air supply 3 introduced inside by centrifugally crushing the water containing the component for purifying the air. It was configured to add the components to be performed. Thereby, by changing the rotation speed at the time of centrifugal crushing, the particle size or the crushing amount of the water to be crushed can be controlled, and by extension, the air purification added to the supply airflow 3 introduced in the apparatus is performed. The amount of the component added can be controlled.

(5) In the heat exchange type ventilator 50 with an air purification function, the heat exchanger 16 performs an excessive cooling (dehumidification) operation rather than the dehumidification amount when dehumidifying the supply airflow 3 to the target set humidity. Even if the humidifier 6d is used for humidification, the humidity of the air supply 3 does not exceed the target set humidity. As a result, it is possible to supply air to the indoor space 11 while maintaining the humidity of the supply airflow 3 within a comfortable range while adding a component for purifying the air to the supply airflow 3.

(6) The heat exchange type ventilator 50 with an air purification function includes a humidity detection unit 15 that detects the humidity of the air RA from the indoor space 11. Then, the control unit 8 controls the operation of the humidifying operation of the humidifier 6d and the operation of the dehumidifying operation of the heat exchanger 16 based on the humidity information from the humidity detecting unit 15. As a result, the operation of the humidifier 6d and the heat exchanger 16 can be reliably switched based on the humidity information of the air supply air 3, and the humidity of the air supply air 3 after the heat exchange is maintained within a comfortable range. Air can be supplied to the indoor space 11.

Although the present disclosure has been described above based on the embodiments, the present disclosure is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present disclosure. It can be easily inferred. 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 ventilator 50 with an air purification function according to the present embodiment, the operation is switched between the first operation state and the third operation state based on the addition level (addition amount) of the purification component set in advance. Humidity control was performed, but it is not limited to this. For example, the operating state may be continuously switched based on the purification degree information of the air RA from the indoor space 11. Thereby, it is possible to control the addition of the purification component to the supply airflow 3 with higher accuracy. In addition, the relative humidity of the air in the indoor space 11 can be maintained within a comfortable range (40% to 60%) without the user switching the operation.

(Embodiment 2)
As a conventional heat exchange type ventilator with an air purification function, air conditioning that disinfects the indoor space by contacting the air supplied from the outside to the inside with the gas-liquid contact member containing hypochlorous acid and releasing it. The system is known (see, for example, Patent Document 1).

The heat exchange type ventilation device with an air purification function according to the present disclosure includes a heat exchange type ventilation device, an air purification unit, a first heat exchange unit, and a second heat exchange unit. The heat exchange type ventilator is between the exhaust flow that flows through the exhaust air passage that discharges the air in the indoor space to the outdoor space and the air supply air flow that flows through the air supply air passage that supplies the air in the outdoor space to the indoor space. Heat exchange. The air purification unit adds a component for purifying air together with water to the air supply after heat exchange introduced from the heat exchange type ventilator. The first heat exchange unit dehumidifies the air supply after heat exchange on the upstream side of the air purification unit. The second heat exchange unit heats the air supply dehumidified by the first heat exchange unit between the first heat exchange unit and the air purification unit. This will achieve the intended purpose.

According to the present disclosure, it is possible to provide an air purification device capable of suppressing an increase in humidity due to the release of hypochlorous acid.

Explaining again, the heat exchange type ventilation device with an air purification function according to the present disclosure includes a heat exchange type ventilation device, an air purification unit, a first heat exchange unit, and a second heat exchange unit. The heat exchange type ventilator is between the exhaust flow that flows through the exhaust air passage that discharges the air in the indoor space to the outdoor space and the air supply air flow that flows through the air supply air passage that supplies the air in the outdoor space to the indoor space. Heat exchange. The air purification unit adds a component for purifying air together with water to the air supply after heat exchange introduced from the heat exchange type ventilator. The first heat exchange unit dehumidifies the air supply after heat exchange on the upstream side of the air purification unit. The second heat exchange unit heats the air supply dehumidified by the first heat exchange unit between the first heat exchange unit and the air purification unit.

According to such a configuration, in the supply of the air supply to the indoor space, the first heat exchanger and the air purification unit add and supply a component that purifies the air while lowering the absolute humidity of the air supply after the heat exchange. A state in which the absolute humidity of the air supply air after heat exchange is decreased by the first heat exchanger and the second heat exchanger, and the temperature of the air supply air decreased due to dehumidification is increased and supplied. It is possible to combine them. In other words, in the case of adding a component that purifies the air while exchanging heat to the air from the outdoor space where the relative humidity is higher than the relative humidity of the air in the indoor space, for example, in the summer of Japan, the hypothesis It can be a heat exchange type ventilation device with an air purification function that can suppress the increase in humidity due to the release of chloric acid.

Further, the heat exchange type ventilator with an air purification function according to the present disclosure further includes a control unit that controls the operation of the air purification unit, the first heat exchange unit, and the second heat exchange unit. Then, the control unit performs the first operation of dehumidifying the air supply air after heat exchange and adding it by the air purification unit based on the temperature / humidity information of the air in the indoor space. Control is performed to switch between dehumidification by the first heat exchange unit and second operation of heating by the second heat exchange unit with respect to the air supply airflow after heat exchange.

This allows the control unit to control switching between the first operation and the second operation based on the indoor environment (air temperature / humidity information in the indoor space). As a result, in the first operation, it is possible to add and supply a component that purifies the air while suppressing the amount of humidification to the air supply. In the first operation, if the temperature of the air in the indoor space drops below the target set temperature due to dehumidification at the first heat exchange section, switch to the second operation and use the temperature of the air supply in the first operation. Can also supply airflow with increased temperature.

Further, in the heat exchange type ventilator with an air purification function according to the present disclosure, the first heat exchange unit functions as a heat absorber in a refrigeration cycle including a compressor, a radiator, an expander and a heat absorber. The second heat exchange unit is composed of a second refrigerant coil that functions as a radiator in a refrigerating cycle different from the refrigerating cycle. As a result, the first heat exchange unit and the second heat exchange unit can be incorporated into the heat exchange type ventilator with an air purification function with a simple configuration.

(Premise example)
First, refer to FIGS. 8 and 9 for the heat exchange type ventilator 110 according to the premise example of the present disclosure, which is a premise for explaining the heat exchange type ventilator 150 with an air purification function according to the embodiment of the present disclosure. I will explain. FIG. 8 is a schematic view showing an installation state of the heat exchange type ventilation device 110 according to the premise example of the present disclosure in a house. FIG. 9 is a schematic diagram showing the configuration of the heat exchange type ventilator 110 according to the premise example of the present disclosure.

In FIG. 8, a heat exchange type ventilation device 110 is installed indoors (behind the ceiling, etc.) of the house 101. The heat exchange type ventilator 110 is a device (No. 1) that ventilates while exchanging heat between the air in the indoor space 111 (hereinafter, also simply referred to as “indoor”) and the air in the outdoor space 112 (hereinafter, also simply referred to as “outdoor”). Two types of ventilation equipment).

As shown in FIG. 8, the exhaust flow 102 is discharged from the indoor space 111 such as the living room to the outdoor space 112 via the indoor exhaust port 109a, the heat exchange type ventilation device 110, and the outdoor exhaust port 109b as shown by the black arrow. .. That is, the exhaust flow 102 is a flow of air discharged from indoors to outdoors. Further, the air flow 103 is taken into the indoor space 111 from the outdoor space 112 via the outdoor air supply port 109c, the heat exchange type ventilation device 110, and the indoor air supply port 109d as shown by the white arrow. That is, the air supply 103 is a flow of air taken in from the outside to the inside. For example, in winter in Japan, the exhaust flow 102 is 20 ° C to 25 ° C, while the airflow 103 may reach below freezing. The heat exchange type ventilation device 110 ventilates and transfers the heat of the exhaust flow 102 to the supply airflow 103 during ventilation to suppress the release of heat to the outside (heats the supply airflow 103 by the exhaust flow 102). There is.

As shown in FIG. 9, the heat exchange type ventilation device 110 includes a main body case 110f, an inside air port 110a, an exhaust port 110b, an outside air port 110c, an air supply port 110d, a heat exchange element 110e, an exhaust fan 110g, an air supply fan 110h, and an exhaust. It is provided with an air passage 104 and an air supply air passage 105.

The main body case 110f is the outer frame of the heat exchange type ventilator 110. An inside air port 110a, an exhaust port 110b, an outside air port 110c, and an air supply port 110d are formed on the outer periphery of the main body case 110f. The inside air port 110a is a suction port for sucking the exhaust flow 102 into the heat exchange type ventilation device 110, and communicates with the indoor exhaust port 109a (see FIG. 8) via a duct or the like. The exhaust port 110b is a discharge port for discharging the exhaust flow 102 from the heat exchange type ventilation device 110 to the outside, and communicates with the outdoor exhaust port 109b (see FIG. 8) via a duct or the like. The outside air port 110c is a suction port for sucking the air supply port 103 into the heat exchange type ventilation device 110, and communicates with the outdoor air supply port 109c (see FIG. 8) via a duct or the like. The air supply port 110d is a discharge port for discharging the air supply port 103 indoors from the heat exchange type ventilation device 110, and communicates with the indoor air supply port 109d via a duct or the like.

A heat exchange element 110e, an exhaust fan 110g, and an air supply fan 110h are mounted inside the main body case 110f. Further, an exhaust air passage 104 and an air supply air passage 105 are configured inside the main body case 110f. The heat exchange element 110e is a total heat type heat exchange element, and heat exchange (sensible heat and latent heat) between the exhaust flow 102 flowing through the exhaust air passage 104 and the supply airflow 103 flowing through the supply air passage 105 (sensible heat and latent heat). It is a member for performing. The exhaust fan 110g is installed in the vicinity of the exhaust port 110b, and is a blower for sucking the exhaust flow 102 from the inside air port 110a and discharging it from the exhaust port 110b. The air supply fan 110h is installed in the vicinity of the air supply port 110d, and is a blower for sucking the air supply airflow 103 from the outside air port 110c and discharging it from the air supply port 110d. The exhaust air passage 104 is configured to include an air passage that communicates the inside air port 110a and the exhaust port 110b. The air supply air passage 105 includes an air passage that communicates the outside air port 110c and the air supply port 110d. The exhaust flow 102 sucked from the inside air port 110a by driving the exhaust fan 110g is discharged to the outside from the exhaust port 110b via the heat exchange element 110e in the exhaust air passage 104 and the exhaust fan 110g. Further, the air supply 103 sucked from the outside air port 110c by driving the air supply fan 110h is supplied indoors from the air supply port 110d via the heat exchange element 110e and the air supply fan 110h.

When heat exchange ventilation is performed, the heat exchange type ventilation device 110 operates the exhaust fan 110g and the air supply fan 110h, and the exhaust flow 102 flowing through the exhaust air passage 104 in the heat exchange element 110e and the air supply air passage 105. Heat is exchanged with the air supply 103 flowing through the air. As a result, the heat exchange type ventilator 110 transfers the heat of the exhaust flow 102 released to the outside to the air supply 103 that takes in the heat indoors when ventilating, suppresses the release of the heat to the outside, and indoors. Recover heat. As a result, for example, in winter in Japan, it is possible to suppress a decrease in indoor temperature due to low-temperature outdoor air during ventilation. On the other hand, for example, in the summer of Japan, when ventilation is performed, it is possible to suppress an indoor temperature rise due to high temperature outdoor air.

Hereinafter, the second embodiment will be described.

First, with reference to FIG. 10, the heat exchange type ventilation device 150 with an air purification function according to the second embodiment will be described. FIG. 10 is a schematic view showing the configuration of the heat exchange type ventilation device 150 with an air purification function according to the second embodiment of the present disclosure. In the following description, the airflow (exhaust flow 102 and supply airflow 103) or air passage (exhaust air passage 104 and supply air passage 105) after heat exchange passes through the heat exchange element 110e in the heat exchange type ventilation device 110. The airflow or air passage after the heat is shown.

As shown in FIG. 10, the heat exchange type ventilator 150 with an air purification function according to the second embodiment imparts an air purification function to the air supply air passage 105 of the heat exchange type ventilation device 110 according to the premise example. It has a configuration in which an air purifying device 106 is connected as a means for the ventilation.

The air purification device 106 performs a cooling treatment (dehumidifying treatment) or a heat treatment on the supply airflow 103 after heat exchange from the heat exchange type ventilation device 110, if necessary. Further, the air purifying device 106 is a device that includes a purifying component (a component that purifies the air) together with the finely divided water in the air supply 103 that circulates inside. Specifically, as shown in FIG. 10, the air purification device 106 includes an air supply inlet 106a, an airflow outlet 106c, a humidifier 106d, a first refrigerant coil 116, and a second refrigerant coil 117. The humidifier 106d can be said to be an "air purification unit", the first refrigerant coil 116 can be said to be a "first heat exchange unit", and the second refrigerant coil 117 can be said to be a "second heat exchange unit".

The air supply inlet 106a is an intake that takes in the air supply 103 from the heat exchange type ventilation device 110 into the air purification device 106. The air supply inlet 106a is communicated with the air supply port 110d of the heat exchange type ventilation device 110 via a duct 107 forming a part of the air supply air passage 105.

The airflow outlet 106c is a discharge port that discharges the airflow 103 (or the airflow 103 to which the component that purifies the air is not added) to the air supply air passage 105 as the air supply SA. ..

The humidifier 106d is a unit for humidifying the air (air supply airflow 103) taken into the inside, and when the air is humidified, it is a purification component (a component that purifies the air) together with water finely divided with respect to the air. To include. More specifically, the humidifier 106d has a humidifying motor 106e and a humidifying nozzle 106f. The humidifier 106d rotates the humidifying nozzle 106f using the humidifying motor 106e, and sucks up the water (water containing a purification component) stored in the water storage unit (not shown) of the humidifier 106d by centrifugal force. It is configured as a centrifugal crushing type in which water is contained in the air passing through the humidifier 106d by scattering, colliding and crushing the collected water in the surroundings (centrifugal direction of the humidifying motor 106e). Then, the humidifier 106d changes the rotation speed (hereinafter, also defined as a rotation output value) of the humidifying motor 106e according to the output signal from the control unit 141 described later, thereby humidifying the air (humidifying amount). To adjust. The humidification amount can be said to be an additional amount that adds a purification component to the air.

The supply of water containing a purifying component to the water storage section (not shown) of the humidifier 106d includes the purifying component by adding (adding) the purifying component to the water supplied from the water supply pipe of a water supply or the like. It is performed by the purification component supply unit (not shown) that produces water. Here, as the purifying component, for example, hypochlorous acid having bactericidal or deodorant properties is used. That is, indoor sterilization or deodorization can be performed by including hypochlorous acid water or the like generated by adding hypochlorous acid to water in the air flow 103 and supplying it indoors.

The first refrigerant coil 116 is arranged on the upstream side of the humidifier 106d in the air purification device 106, and is a member for cooling or heating the introduced air (air supply airflow 103). Then, the first refrigerant coil 116 changes the output state (cooling, heating, or off) of the first refrigerant coil 116 according to the output signal from the control unit 141 described later. Thereby, the cooling capacity (cooling amount) or the heating capacity (heating amount) with respect to the introduced airflow 103 is adjusted. In the first refrigerant coil 116, cooling the introduced air is, that is, dehumidifying the introduced air. Therefore, the cooling capacity (cooling amount) for the supply airflow 103 can be said to be the dehumidifying capacity (dehumidification amount) for the supply airflow 103.

More specifically, the first refrigerant coil 116 functions as a heat absorber or radiator in a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber. The first refrigerant coil 116 is configured to absorb heat (cool) or dissipate heat (heat) when the refrigerant introduced from the air conditioner (outdoor unit 120) circulates inside. Here, the first refrigerant coil 116 is an indoor unit built in the air purification device 106 installed in the indoor space 111, and the outdoor unit 120 is an outdoor unit installed in the outdoor space 112. The outdoor unit 120 includes a compressor 120a, an expander 120b, an outdoor heat exchanger 120c, a blower fan 120d, and a four-way valve 120e.

Next, the refrigeration cycle composed of the first refrigerant coil 116 and the outdoor unit 120 will be described.

A four-way valve 120e is connected to the refrigeration cycle. The first refrigerant coil 116 is in a cooling mode (dehumidifying mode) in which the air (supply airflow 103) is cooled and dehumidified by the flow of the refrigerant in the first direction by the four-way valve 120e, and the second direction by the four-way valve 120e. It has a heating mode state in which the air (supply airflow 103) is heated by the flow of the refrigerant.

Here, the four-way valve 120e is a device (reversible valve) for switching the flow direction of the refrigerant flowing in the refrigerant circuit 121 in the refrigeration cycle. More specifically, the four-way valve 120e is connected between the compressor 120a and the first refrigerant coil 116, and between the compressor 120a and the outdoor heat exchanger 120c. The four-way valve 120e has a cooling mode in which the compressor 120a, the outdoor heat exchanger 120c, the expander 120b, and the first refrigerant coil 116 circulate the refrigerant in this order (first direction), and the compressor 120a and the first. The refrigerant coil 116, the expander 120b, and the outdoor heat exchanger 120c are switched between a heating mode in which the refrigerant is circulated in this order (second direction). That is, the flow of the refrigerant is in the opposite direction in the cooling mode and the heating mode. The cooling mode can also be said to be a dehumidification mode.

The compressor 120a compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle, increases the pressure, and raises the temperature.

The outdoor heat exchanger 120c functions as a radiator. The outdoor heat exchanger 120c exchanges heat between the refrigerant gas whose high temperature and high pressure are increased by the compressor 120a and the air (air OA of the outdoor space 112 blown by the blower fan 120d), thereby exchanging heat with the outside (air OA in the outdoor space 112). Discharge to outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the outdoor heat exchanger 120c, the temperature of the introduced refrigerant gas is higher than the temperature of the air. Therefore, when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The blower fan 120d blows air OA in the outdoor space 112 toward the outdoor heat exchanger 120c.

The expander 120b decompresses the high-pressure refrigerant liquefied by the outdoor heat exchanger 120c to the original low-temperature and low-pressure liquids.

The first refrigerant coil 116 functions as a heat absorber. In the first refrigerant coil 116, the liquid refrigerant flowing through the expander 120b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the first refrigerant coil 116, the temperature of the introduced refrigerant is lower than the temperature of the air (the introduced air flow 103 after heat exchange). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

In this way, the first refrigerant coil 116 cools the introduced air (air supply 103).

Similar to the dehumidification mode, the compressor 120a compresses the low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle, and raises the pressure to raise the temperature.

The first refrigerant coil 116 functions as a radiator. The first refrigerant coil 116 performs the same function as the outdoor heat exchanger 120c in the cooling mode. Specifically, the first refrigerant coil 116 transfers heat by exchanging heat between the refrigerant gas whose high temperature and high pressure have been increased by the compressor 120a and air (the supply airflow 103 after the heat exchange to be introduced). Discharge to the outside (outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the first refrigerant coil 116, since the temperature of the introduced refrigerant gas is higher than the temperature of the air, when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The expander 120b decompresses the high-pressure refrigerant liquefied by the first refrigerant coil 116 to obtain the original low-temperature and low-pressure liquids.

The outdoor heat exchanger 120c functions as a heat absorber. The outdoor heat exchanger 120c performs the same function as the first refrigerant coil 116 in the cooling mode. Specifically, in the outdoor heat exchanger 120c, the liquid refrigerant flowing through the expander 120b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the outdoor heat exchanger 120c, the temperature of the introduced refrigerant is lower than the temperature of the air (air OA of the outdoor space 112 blown by the blower fan 120d). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

In this way, the first refrigerant coil 116 heats the introduced air (air supply 103).

As described above, the first refrigerant coil 116 can be cooled or heated with respect to the introduced air (air supply 103), but in the present embodiment, the first refrigerant coil 116 is in the cooling mode. It is used as a member for cooling (dehumidifying) the air introduced in.

The second refrigerant coil 117 is arranged between the first refrigerant coil 116 and the humidifier 106d in the air purification device 106, and cools the air (air supply airflow 103) introduced through the first refrigerant coil 116. Or it is a member for heating. Then, the second refrigerant coil 117 changes the output state (cooling, heating or off) of the second refrigerant coil 117 according to the output signal from the control unit 141 described later. Thereby, the heating capacity (heating amount) or the cooling capacity (cooling amount) with respect to the introduced airflow 103 is adjusted.

More specifically, the second refrigerant coil 117 functions as a radiator in a refrigeration cycle including a compressor, a radiator, an expander, and a heat absorber. The second refrigerant coil 117 is configured to dissipate (heat) the refrigerant introduced from the air conditioner (outdoor unit 130) when it circulates inside. Here, the second refrigerant coil 117 is an indoor unit built in the air purification device 106 installed in the indoor space 111, and the outdoor unit 130 is an outdoor unit installed in the outdoor space 112. The outdoor unit 130 includes a compressor 130a, an expander 130b, an outdoor heat exchanger 130c, a blower fan 130d, and a four-way valve 130e.

Next, the refrigeration cycle composed of the second refrigerant coil 117 and the outdoor unit 130 will be described.

A four-way valve 130e is connected to the refrigeration cycle as in the refrigeration cycle having the first refrigerant coil 116. The second refrigerant coil 117 is in a cooling mode (dehumidifying mode) in which the air (supply airflow 103) is cooled and dehumidified by the flow of the refrigerant in the first direction by the four-way valve 130e, and the second direction by the four-way valve 130e. It has a heating mode state in which the air (supply airflow 103) is heated by the flow of the refrigerant.

Here, the four-way valve 130e is a device (reversible valve) for switching the flow direction of the refrigerant flowing in the refrigerant circuit 131 in the refrigeration cycle. More specifically, the four-way valve 130e is connected between the compressor 130a and the second refrigerant coil 117, and between the compressor 130a and the outdoor heat exchanger 130c. The four-way valve 130e has a cooling mode in which the compressor 130a, the outdoor heat exchanger 130c, the expander 130b, and the second refrigerant coil 117 circulate the refrigerant in this order (first direction), and the compressor 130a and the second. The heating mode in which the refrigerant coil 117, the expander 130b, and the outdoor heat exchanger 130c are circulated in this order (second direction) is switched. That is, the flow of the refrigerant is in the opposite direction in the cooling mode and the heating mode. Hereinafter, the cooling mode and the heating mode will be described.

The compressor 130a compresses low-temperature and low-pressure refrigerant gas (working medium gas) in the refrigerant cycle, increases the pressure, and raises the temperature.

The outdoor heat exchanger 130c functions as a radiator. The outdoor heat exchanger 130c exchanges heat between the refrigerant gas heated to high temperature and high pressure by the compressor 130a and the air (air OA of the outdoor space 112 blown by the blower fan 130d) to exchange heat with the outside (air OA in the outdoor space 112). Discharge to outside the refrigerant cycle). At this time, the refrigerant gas is condensed and liquefied under high pressure. In the outdoor heat exchanger 130c, the temperature of the introduced refrigerant gas is higher than the temperature of the air. Therefore, when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The blower fan 130d blows air OA in the outdoor space 112 toward the outdoor heat exchanger 130c.

The expander 130b decompresses the high-pressure refrigerant liquefied by the outdoor heat exchanger 130c to the original low-temperature and low-pressure liquids.

The second refrigerant coil 117 functions as a heat absorber. In the second refrigerant coil 117, the liquid refrigerant flowing through the expander 120b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the second refrigerant coil 117, the temperature of the introduced refrigerant is lower than the temperature of the air (introduced air flow 103). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

In this way, the second refrigerant coil 117 cools the introduced air (air supply 103).

The second refrigerant coil 117 functions as a radiator. The second refrigerant coil 117 releases heat to the outside (outside the refrigerant cycle) by exchanging heat between the refrigerant gas having a high temperature and high pressure by the compressor 130a and the air (introduced air flow 103). .. At this time, the refrigerant gas is condensed and liquefied under high pressure. In the second refrigerant coil 117, the temperature of the introduced refrigerant gas is higher than the temperature of the air, so that when the air and the refrigerant gas exchange heat, the air is heated and the refrigerant gas is cooled.

The expander 130b decompresses the high-pressure refrigerant liquefied by the second refrigerant coil 117 to obtain the original low-temperature and low-pressure liquids.

The outdoor heat exchanger 130c functions as a heat absorber. In the outdoor heat exchanger 130c, the liquid refrigerant flowing through the expander 130b takes heat from the air and evaporates to become low-temperature and low-pressure refrigerant gas. In the outdoor heat exchanger 130c, the temperature of the introduced refrigerant is lower than the temperature of the air (air OA of the outdoor space 112 blown by the blower fan 130d). Therefore, when the refrigerant and the air exchange heat, the air is cooled and the temperature of the refrigerant is raised.

In this way, the second refrigerant coil 117 heats the introduced air (air supply 103).

As described above, the second refrigerant coil 117 can be cooled or heated with respect to the introduced air (air supply airflow 103), but in the present embodiment, the second refrigerant coil 117 is in the heating mode. It is used as a member for heating the air introduced in.

The air purification device 106 is configured as described above. Then, the air purification device 106 is in a state of adding and supplying a component that purifies the air while lowering the absolute humidity of the supply airflow 103 after heat exchange by the first refrigerant coil 116 (cooling mode) and the humidifier 106d. The first refrigerant coil 116 (cooling mode) and the second refrigerant coil 117 (heating mode) lower the absolute humidity of the supply airflow 103 after heat exchange and raise the temperature of the supply airflow 103 that has decreased with dehumidification. The air supply 103 is supplied to the indoor space 111 in combination with the state of supplying the air.

Specifically, the air purification device 106 cools (dehumidifies) the supply airflow 103 after heat exchange by the first refrigerant coil 116 based on the indoor environment (temperature / humidity information of the air RA in the indoor space 111). And the first operation of adding the purification component by the humidifier 106d, and the second operation of cooling (dehumidifying) the supply airflow 103 after heat exchange by the first refrigerant coil 116 and heating by the second refrigerant coil 117. The air supply 103 is supplied to the indoor space 111 while switching between. In the first operation, the second refrigerant coil 117 has stopped operating, and in the second operation, the humidifier 106d (humidifying motor 106e) has stopped operating. Therefore, in the second operation, the purifying component is hardly added to the air flow 103.

Next, with reference to FIG. 11, the temperature / humidity control for the supply airflow 103 by the air purification device 106 will be described. FIG. 11 shows the tendency of temperature and humidity changes due to the first operation and the second operation in the region divided by the reference values of temperature and humidity in the heat exchange type ventilation device 150 with an air purification function according to the second embodiment of the present disclosure. It is a figure for demonstrating.

In FIG. 11, the vertical axis represents humidity and the horizontal axis represents temperature. Further, the upper limit of the humidity reference value is the humidity H1, and the lower limit is the humidity H2. The upper limit of the temperature reference value is the temperature T1, and the lower limit is the temperature T2. Then, the region divided by the upper and lower limits of temperature and humidity is set as the reference region E which is the target standard of temperature and humidity, and the upper limit of temperature and humidity (temperature T1 and humidity H1) and the lower limit of temperature and humidity (temperature T2 and humidity H2) are set. The straight line connecting them is defined as the reference line C. The temperature / humidity region (excluding the reference region E) above the reference line C is defined as the region A, and the temperature / humidity region (excluding the reference region E) below the reference line C is defined as the region B.

In the first operation, cooling (dehumidification) is performed by the first refrigerant coil 116, and purification components are added by the humidifier 106d. Therefore, as shown in FIG. 11, the introduced airflow 103 has the effect (tendency) of lowering the temperature and increasing the humidity. On the other hand, in the second operation, cooling (dehumidification) by the first refrigerant coil 116 and heating by the second refrigerant coil 117 are performed. Therefore, the introduced airflow 103 has the effect (tendency) of increasing the temperature and decreasing the humidity. The effects of the first operation and the second operation (the length and angle of the operation effect indicated by the arrows) can be adjusted by the outputs of the first refrigerant coil 116, the second refrigerant coil 117, and the humidifier 106d. However, in all cases, the tendency of temperature and humidity changes is the same.

Next, a case where the temperature and humidity of the current air RA of the indoor space 111 is in the region B will be described based on the temperature and humidity information of the air RA of the indoor space 111. In this case, the air purifying device 106 lowers the temperature of the introduced airflow 103 and increases the humidity by executing the first operation. As a result, the air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the region A. At this time, a purification component is added to the supply airflow 103. Then, when the temperature and humidity of the air RA in the indoor space 111 becomes the region A, the air purification device 106 switches from the first operation to the second operation and executes the operation. As a result, the air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the reference region E by raising the temperature of the introduced air flow 103 and lowering the humidity. The air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the reference region E while repeating such an operation operation. In this way, the purification component can be added to the air flow 103, which is the temperature and humidity of the region B, and the air RA of the indoor space 111 can be set to the target set temperature and humidity (reference region E).

Next, a case where the temperature and humidity of the current air RA of the indoor space 111 is in the region A will be described based on the temperature and humidity information of the air RA of the indoor space 111. In this case, the air purifying device 106 raises the temperature of the introduced airflow 103 and reduces the humidity by executing the second operation. As a result, the air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the region B. Then, when the temperature / humidity of the air RA in the indoor space 111 becomes the region B, the air purifying device 106 switches from the second operation to the first operation and executes the operation to switch the temperature of the air supply 103 to be introduced. And increase the humidity. As a result, the air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the reference region E. At this time, a purification component is added to the supply airflow 103. The air purification device 106 controls the temperature and humidity of the air RA in the indoor space 111 so as to enter the reference region E while repeating such an operation operation. In this way, the purification component can be added to the air flow 103 which was the temperature and humidity of the region A, and the air RA of the indoor space 111 can be set to the target set temperature and humidity (reference region E).

Further, when the temperature / humidity of the current air RA of the indoor space 111 is in the reference region E which is the target set temperature / humidity based on the temperature / humidity information of the air RA of the indoor space 111 (or by the above-mentioned correspondence, the region A Or when entering the reference area E from the area B). In this case, the air purifying device 106 alternately repeats the first operation and the second operation under the condition within the range not deviating from the reference region E as much as possible, and the purifying component is continuously added to the indoor space 111. To control.

As described above, the heat exchange type ventilator 150 with an air purification function heats from the heat exchange type ventilator 110 by combining the operating operations of the first refrigerant coil 116, the second refrigerant coil 117, and the humidifier 106d. It is configured so that the air RA of the indoor space 111 can be adjusted to the optimum temperature / humidity (target setting temperature / humidity) while adding a component for purifying air to the air supply airflow 103 after replacement.

Next, the control unit 141 of the air purification device 106 will be described with reference to FIG. 12. FIG. 12 is a schematic block diagram showing the configuration of the control unit 141 in the heat exchange type ventilation device 150 with an air purification function according to the second embodiment of the present disclosure.

As shown in FIG. 12, the control unit 141 includes an input unit 141a, a storage unit 141b, a timekeeping unit 141c, a processing unit 141d, and an output unit 141e.

The input unit 141a has first information regarding an operation start instruction or an operation stop instruction from the operation panel 143, second information regarding the air temperature of the indoor space 111 from the temperature detection unit 126a, and an indoor space from the humidity detection unit 126b. Accepts the third information regarding the humidity of the air of 111. The input unit 141a outputs the received first information to the third information to the processing unit 141d.

Here, the operation panel 143 is a terminal for the user to input user input information regarding the air purification device 106 (for example, presence / absence of addition of purification component, amount of addition of purification component, amount of air blown, etc.), and is controlled wirelessly or by wire. It is connected to the unit 141 so as to be communicable. The first information also includes user input information.

Further, the temperature detection unit 126a is a sensor provided in the heat exchange type ventilation device 110 and senses the temperature of the indoor air RA (exhaust flow 102) taken in from the indoor exhaust port 109a. Further, the humidity detection unit 126b is a sensor provided in the heat exchange type ventilation device 110 and senses the humidity of the indoor air RA taken in from the indoor exhaust port 109a. The temperature detection unit 126a and the humidity detection unit 126b may be installed in the target space of the indoor space 111. Further, the temperature detection unit 126a and the humidity detection unit 126b may be combined into one temperature / humidity sensor.

The storage unit 141b has a fourth information regarding the addition processing setting in the application operation of the purification component (water containing the purification component) to the air supply 103 flowing through the air purification device 106, and a fifth information regarding the setting information corresponding to the user input information. And remember. The storage unit 141b outputs the stored fourth information and the fifth information to the processing unit 141d. It should be noted that the application processing setting in the purification component application operation can be said to be the humidification setting in the humidification operation of the air purification device 106.

The timekeeping unit 141c outputs the sixth information regarding the current time to the processing unit 141d.

The processing unit 141d receives the first information to the third information from the input unit 141a, the fourth information and the fifth information from the storage unit 141b, and the sixth information from the timekeeping unit 141c. The processing unit 141d uses the received first information to sixth information to specify control information (rotational output value, cooling output value, and heating output value) related to the application operation based on the application processing setting. The processing unit 141d outputs the specified control information to the output unit 141e.

The output unit 141e outputs the control information (rotational output value) received from the processing unit 141d to the humidifier 106d (humidifying motor 106e). Further, the output unit 141e outputs the control information (cooling output value and heating output value) received from the processing unit 141d to the first refrigerant coil 116 and the second refrigerant coil 117, respectively. Then, the humidifier 106d executes a humidifying operation according to the rotation output value output from the output unit 141e. Further, the first refrigerant coil 116 executes the cooling operation operation on or off based on the cooling output value output from the output unit 141e. Further, the second refrigerant coil 117 executes the heating operation operation on or off based on the heating output value output from the output unit 141e.

As described above, the control unit 141 controls the cooling operation, the purification component imparting operation, and the heating operation of the supply airflow 103 flowing through the air purification device 106, respectively.

Next, with reference to FIG. 13, the processing procedure in the temperature / humidity control by the air purification device 106 and the application operation of the purification component will be described. FIG. 13 is a flowchart showing a process performed by the control unit 141 in the heat exchange type ventilation device 150 with an air purification function according to the second embodiment of the present disclosure.

As shown in FIG. 13, the processing unit 141d of the control unit 141 is mainly composed of three steps (steps S01 to S03), and starts processing according to a control signal from the operation panel 143.

Step S01 is a step for performing processing at the processing interval stored in the storage unit 141b. For example, when the processing interval is 5 minutes, the processing unit 141d repeats the determination of the time until 5 minutes have passed while receiving the time information output from the time measuring unit 141c, and after 5 minutes, the processing unit 141d performs processing in step S02. Proceed. When determining the time, the control signal of the operation panel 143 is received in the subsequent stage, and when the end signal is received, the process ends.

Step S02 is a step of updating the temperature / humidity value of the air RA in the indoor space 111. Here, the processing unit 141d updates the temperature / humidity value based on each information output from the input unit 141a and the storage unit 141b, and proceeds to the process in step S03.

Step S03 is a step of specifying an operation mode (operating state of the first refrigerant coil 116, the humidifier 106d, and the second refrigerant coil 117) according to the updated temperature / humidity value.

Here, the processing unit 141d uses the reference values stored in the storage unit 141b (humidity H1 at the upper limit of the humidity reference value, humidity H2 at the lower limit of the humidity reference value, temperature T1 at the upper limit of the temperature reference value, and lower limit of the temperature reference value). The magnitude relationship is compared between the lower limit T2) of the above and the updated temperature / humidity value (step S03A).

Then, based on the comparison result of the magnitude relationship, the temperature / humidity of the air RA of the indoor space 111 belongs to which region (region A, reference region E or region B) among the regions classified by the reference values of temperature and humidity. (Step S03B).

Then, based on the information about the specified area, the operation mode assigned to each area is specified (step S03C). Specifically, in each operation mode, the start order of the first operation and the second operation, the control information in the first operation (rotation output value and the cooling output value), and the control information in the second operation (cooling output) Value and heating output value) are specified.

Then, the processing unit 141d outputs the control information based on the specified operation mode to the output unit 141e.

Information on the regions (region A, reference region E, or region B) divided by the reference values of temperature and humidity shown in FIG. 11, as well as the first refrigerant coil 116, the humidifier 106d, and the first humidifier corresponding to each operation mode. (2) Information regarding the operating state of the refrigerant coil 117 is stored in the storage unit 141b.

As described above, according to the heat exchange type ventilation device 150 with an air purification function according to the second embodiment, the following effects can be enjoyed.

(1) The heat exchange type ventilator 150 with an air purification function includes a heat exchange type ventilator 110, a humidifier 106d, a first refrigerant coil 116, and a second refrigerant coil 117. The heat exchange type ventilation device 110 has an exhaust flow 102 that flows through an exhaust air passage 104 that discharges the air RA of the indoor space 111 to the outdoor space 112, and an air supply air passage that supplies air OA of the outdoor space 112 to the indoor space 111. Heat is exchanged with the air supply 103 flowing through 105. The humidifier 106d adds hypochlorous acid (purifying component) together with water to the supply airflow 103 after heat exchange introduced from the heat exchange type ventilator 110. The first refrigerant coil 116 cools (dehumidifies) the supply airflow 103 after heat exchange on the upstream side of the humidifier 106d. The second refrigerant coil 117 heats the air flow 103 dehumidified by the first refrigerant coil 116 between the first refrigerant coil 116 and the humidifier 106d.

According to such a configuration, in the supply of the air supply 103 to the indoor space 111, hypochlorous acid is added while lowering the absolute humidity of the air supply 103 after heat exchange by the first refrigerant coil 116 and the humidifier 106d. The temperature of the supply airflow 103, which has decreased due to dehumidification, is increased and supplied while reducing the absolute humidity of the supply airflow 103 after heat exchange by the first refrigerant coil 116 and the second refrigerant coil 117. It is possible to combine the state with. That is, in the case of adding hypochlorite while exchanging heat with the air OA from the outdoor space 112, which has a higher relative humidity than the relative humidity of the air RA of the indoor space 111, for example, in the summer of Japan. It is possible to use a heat exchange type ventilator 150 with an air purification function capable of suppressing an increase in humidity due to the release of hypochlorite.

(2) The heat exchange type ventilator 150 with an air purification function further includes a humidifier 106d, a first refrigerant coil 116, and a control unit 141 for controlling the operation of the second refrigerant coil 117. Then, the control unit 141 dehumidifies the supply airflow 103 after heat exchange with the first refrigerant coil 116 and adds it with the humidifier 106d based on the temperature / humidity information of the air RA in the indoor space 111. Control is performed to switch between one operation and a second operation in which the supply airflow 103 after heat exchange is dehumidified by the first refrigerant coil 116 and heated by the second refrigerant coil 117. As a result, the control unit 141 can control switching between the first operation and the second operation based on the indoor environment (temperature / humidity information of the air RA in the indoor space 111). As a result, in the first operation, hypochlorous acid can be added and supplied in a state where the amount of humidification to the supply airflow 103 is suppressed. On the other hand, in the first operation, when the temperature of the air RA in the indoor space 111 drops below the target set temperature due to dehumidification by the first refrigerant coil 116, the second operation is switched to and the air supply airflow 103 in the first operation 103. It is possible to supply the supply airflow 103 whose temperature is higher than the temperature of.

(3) The heat exchange type ventilator 150 with an air purification function includes a temperature detection unit 126a for detecting the temperature of the air RA in the indoor space 111 and a humidity detection unit 126b for detecting the humidity of the air RA in the indoor space 111. .. As a result, the control unit 141 can control switching between the first operation and the second operation based on the temperature information from the temperature detection unit 126a and the humidity information from the humidity detection unit 126b.

(4) In the heat exchange type ventilator 150 with an air purification function, the control unit 141 switches the operation based on the temperature / humidity information of the air RA in the indoor space 111. This makes it possible to maintain the humidity (for example, 40% to 60% RH) of the air RA of the indoor space 111, which is comfortable for the user, without the user switching the operation.

(5) In the heat exchange type ventilator 150 with an air purification function, the first refrigerant coil 116 absorbs heat in a refrigerating cycle (refrigerant circuit 121) including a compressor, a radiator, an expander, and a heat absorber. It is configured to function as a vessel. The second refrigerant coil 117 is configured to function as a radiator in a refrigerating cycle (refrigerant circuit 131) different from the refrigerating cycle (refrigerant circuit 121). As a result, the first refrigerant coil 116 and the second refrigerant coil 117 can be incorporated into the heat exchange type ventilation device 150 (air purification device 106) with an air purification function with a simple configuration.

(6) In the heat exchange type ventilator 150 with an air purification function, the humidifier 106d centrifuges the water containing the component for purifying the air to centrifuges the water supply airflow 103 introduced into the room, and the humidifier 106d has hypochlorous acid. Add acid. As a result, the particle size or amount of crushed water can be controlled by changing the rotation speed during centrifugal crushing, and by extension, hypochlorous acid added to the airflow 103 introduced into the apparatus. The amount of addition can be controlled.

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

In the heat exchange type ventilator 150 with an air purification function according to the present embodiment, the heating operation in the heating mode was performed using the second refrigerant coil 117 constituting the outdoor unit 130 and the refrigerating cycle (refrigerant circuit 131). However, it is not limited to this. For example, a PTC (Positive Temperature Coefficient) may be used as the heating element to perform the heating operation. This makes it possible to further simplify the device configuration of the air purification device 106.

Further, in the heat exchange type ventilator 150 with an air purification function according to the present embodiment, for example, in the summer of Japan, the cooling mode of the first refrigerant coil 116 and the heating mode of the second refrigerant coil 117 are combined to generate heat. The control of adding a purifying component (hypochlorite) to the air supply air force 103 after replacement has been described, but the present invention is not limited to this. For example, in winter in Japan, the heating mode of the first refrigerant coil 116 and the heating mode of the second refrigerant coil 117 may be combined to control the addition of a purifying component to the supply airflow 103 after heat exchange. By doing so, it is possible to increase the amount of humidification for the supply airflow 103 after heat exchange and add an empty purification component. Therefore, it is possible to increase the relative humidity (absolute humidity) of the air RA in the indoor space 111 while adding a purification component to the supply airflow 103 after heat exchange.

Further, in the heat exchange type ventilation device 150 with an air purification function according to the present embodiment, the switching between the first operation and the second operation in the air purification device 106 may be cycled in a predetermined time. Thereby, the air purifying device 106 can easily control the additional amount of the purifying component.

The heat exchange type ventilator with an air purification function according to the present disclosure relates to an air purification system that sterilizes a target space represented indoors, and adjusts the humidity of the target space to have a sterilization effect and comfort. It is useful because it can achieve both.

1,101 House 2,102 Exhaust flow 3,103 Air supply 4,104 Exhaust air passage 5,105 Air supply air passage 6,106 Air purification device 6a, 106a Air supply inlet 6c, 106c Air supply outlet 6d, 106d Humidifier 6e , 106e Humidification motor 6f, 106f Humidification nozzle 6g Main body case 7,107 Duct 8 Control unit 8a Input unit 8b Processing unit 8c Output unit 8d Storage unit 8e Timing unit 9a, 109a Indoor exhaust port 9b, 109b Outdoor exhaust port 9c, 109c Outdoor Air supply port 9d, 109d Indoor air supply port 10,110 Heat exchange type ventilation device 10a, 110a Inner air port 10b, 110b Exhaust port 10c, 110c Outside air port 10d, 110d Air supply port 10e, 110e Heat exchange element 10f, 110f Main body case 10g, 110g Exhaust fan 10h, 110h Air supply fan 11,111 Indoor space 12,112 Outdoor space 15 Humidifier detector 16 Heat exchanger 18 Operation panel 20,120 Outdoor unit 20a, 120a Compressor 20b, 120b Inflator 20c, 120c Outdoor heat exchanger 20d, 120d Blower fan 20e, 120e Four-way valve 21,121 Humidifier circuit 50,150 Heat exchange type ventilator with air purification function 116 First refrigerant coil 117 Second refrigerant coil 126a Temperature detector 126b Humidifier detector 130 Outdoor unit 130a Compressor 130b Expander 130c Outdoor heat exchanger 130d Blower fan 130e Four-way valve 131 Humidifier circuit 141 Control unit 141a Input unit 141b Storage unit 141c Timing unit 141d Processing unit 141e Output unit 143 Operation panel

Claims

Heat exchange that exchanges heat between the exhaust flow that flows through the exhaust air passage that discharges the air in the indoor space to the outdoor space and the air supply air that flows through the air supply air passage that supplies the air in the outdoor space to the indoor space. Shape ventilation system and
An air purification unit that adds a component that purifies air together with water to the air supply air after heat exchange introduced from the air supply air passage.
On the upstream side of the air purification unit, a heat exchange unit that dehumidifies the air supply airflow after heat exchange, and a heat exchange unit.
A control unit that controls the heat exchange unit and
Equipped with
When the control unit adjusts the humidity so that the humidity of the air supply air supplied to the indoor space becomes the target set humidity of the air in the indoor space, the humidity information regarding the humidity increase of the air supply air by the air purification unit is performed. A heat exchange type ventilation device with an air purification function that controls the amount of dehumidification of the air supply by the heat exchange unit based on the above.
The control unit increases the dehumidification amount for the air supply airflow more than the dehumidification amount when the heat exchange unit dehumidifies the humidity of the air supply air introduced into the heat exchange unit to the target set humidity. The heat exchange type ventilation device with an air purification function according to claim 1, which is controlled.
When the humidity increase to the air supply by the air purification unit is the first humidification amount, the control unit dehumidifies by the heat exchange unit with the first dehumidification amount, and the air supply unit by the air purification unit dehumidifies the air supply. When the increase in humidity to the second dehumidification amount is larger than the first dehumidification amount, the dehumidification by the heat exchange unit is controlled to be performed by the second dehumidification amount larger than the first dehumidification amount. Item 2. The heat exchange type ventilation device with an air purification function according to Item 1 or 2.
3. The heat exchange type ventilation device with an air purification function according to any one of the items.