JP2020197310A - Ventilation device and ventilation system - Google Patents

Abstract

To provide a ventilation device, etc. enabling more comfortable air to be supplied into a room, etc.SOLUTION: A ventilation device 3 includes a device body part 4, and the device body part 4 includes a desiccant material 44 and a total heat exchanger 42, etc. which are disposed in the fixed state. The device body part 4 is operable in a normal mode or a regeneration mode. In the normal mode, an air supply destination from outside and an air discharge source to outside are set to inside of a room 102, and thus air that has passed through the total heat exchanger 42 and the desiccant material 44 is supplied into the room 102. In the regeneration mode, since the air supply destination from outside and the air discharge source to outside are set to inside of a double skin 103, the total heat exchanger 42 heats air from outside by using air discharged from the double skin 103, and the desiccant material 44 is heated and regenerated by the heated air.SELECTED DRAWING: Figure 2

Description

The present invention relates to a type of ventilation device that is installed corresponding to a living room of a building and that regulates the temperature and humidity of air from the outside to guide the living room.

Conventionally, when ventilating a living room (a room where people stay for a certain period of time or frequently go in and out) in a building such as an office building, a computer building, or a convenience store, the total heat exchanger discharges the air from the living room. Ventilation devices configured to control the temperature and humidity of external air such as the outside air supplied to the living room by using a part of the thermal energy of the air discharged to the outside are known (for example). See Patent Document 1 etc.). According to such a ventilation device, the temperature and humidity of the air supplied from the outside to the living room are transferred to the outside of the living room before being introduced into the air conditioner that circulates the air in the living room and regulates the air temperature and the like. Since the temperature and humidity of the discharged air can be brought closer to each other, it is possible to reduce the air conditioning load in the air conditioner.

Japanese Patent No. 3152543

By the way, in the above-mentioned ventilation device, the external air introduced from the ventilation device into the living room is provided with the heat energy partially recovered by the total heat exchanger from the exhaust that was the temperature-controlled living room air. The outside air is regulated in temperature and humidity, but if the outside air before regulation contains a large amount of moisture depending on the season and weather, it is more unpleasant than the air-conditioned air in the living room. There is a risk of becoming.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make the external air introduced into the circulating air conditioning system in a living room more comfortable without using a refrigeration cycle. The purpose is to provide ventilation equipment and the like.

Hereinafter, each means suitable for solving the above object will be described in terms of terms. In addition, the action and effect peculiar to the corresponding means will be added as necessary.

Means 1. A ventilation device provided corresponding to the living room in a building having a living room, an outer wall portion, and a roof portion.
The outer wall portion or the roof portion includes at least a double skin which is a double structure of a wall body or a ceiling body in which the air inside is heated by sunlight.
An air supply channel having a common air supply path through which air flows in from the outside and having a supply destination of air passing through the common air supply path branching into the living room and the double skin.
A desiccant material that is installed in the common air supply passage and can dehumidify the air passing through the common air supply passage by adsorbing water.
An air supply target switching means for switching the air supply destination through the common air supply path into the living room or the double skin, and
An exhaust passage having a common exhaust passage through which air discharged to the outside passes, and having an exhaust passage configured such that the inflow source of air into the common exhaust passage is in the living room and the double skin.
Exhaust target switching means for switching the inflow source of air into the common exhaust passage into the living room or the double skin, and
A total heat exchanger having a total heat exchange element capable of exchanging total heat between the air passing through the common air supply path and the air passing through the common exhaust path, an air supply fan, and an exhaust fan.
An apparatus main body provided between the total heat exchanger and the desiccant material in the common air supply path and provided with a cooling means capable of cooling the air passing through the common air supply path by flowing a predetermined refrigerant inside. Has a part,
The desiccant material is arranged in a fixed state, and is
The device main body can operate in a predetermined normal mode or a predetermined playback mode, and can be operated.
In the normal mode, the air supply target switching means sets the air supply destination through the common air supply path to the living room, and the exhaust target switching means sets the inflow source of air into the common exhaust path. By making it a living room, air that has passed through the total heat exchanger and the desiccant material is supplied to the living room through the air supply passage.
In the regeneration mode, the air supply target switching means sets the air supply destination through the common air supply path to the inside of the double skin, and the exhaust target switching means causes the inflow source of air to the common exhaust path. By being inside the double skin, the total heat exchanger heats the air that flows out of the double skin and passes through the common exhaust passage, and the air that passes through the common air supply passage is heated. A ventilation device characterized in that the desiccant material is heated by the air and is in a state of being regenerated.

According to the means 1, the apparatus main body can operate in the normal mode or the reproduction mode.

In the normal mode, the supply destination of air (air from the outside) passing through the common air supply passage and the inflow source of air (inflow source of discharged air) into the common exhaust passage are set as living rooms. Then, the air from the outside is supplied to the living room via the total heat exchanger and the desiccant material. The total heat exchange between the outside air and the air discharged from the living room to the outside is performed by the total heat exchanger, so that the temperature of the air supplied to the living room is the air discharged to the outside of the living room. It is closer to the temperature of. Further, the desiccant material adsorbs the moisture contained in the air from the outside, so that the humidity of the air supplied to the living room is reduced.

By controlling the temperature and reducing the humidity of the air supplied to the living room in this way, it is introduced and supplied to the living room as external air during the period when the temperature and humidity of the outside air tend to be relatively high, such as in summer. It is possible to make the air created more comfortable for the personnel in the living room. In addition, it is possible to reduce the air conditioning load (dehumidifying load) in an air conditioner that circulates and regulates the air in the living room to perform air conditioning, which in turn has good performance in terms of energy saving performance and environmental performance (CO ₂ emissions, etc.). Can be obtained. Furthermore, since dehumidification is performed using a desiccant material that adsorbs moisture instead of a type of dehumidifier that dehumidifies air by compression operation, etc., the number of rows of cooling coils of the air conditioner that regulates the circulation temperature can be reduced. Therefore, it is possible to reduce the cost of dehumidification and downsize the device.

On the other hand, since there is a limit to the amount of water that can be adsorbed in the desiccant material, in order to maintain the dehumidifying function of the desiccant material, the desiccant material must be regenerated, that is, the desiccant material must be heated to evaporate the adsorbed water. Is required. In this regard, according to the above means 1, in the regeneration mode, the supply destination of the air (air from the outside) passing through the common air supply path and the inflow source of the air (the inflow source of the discharged air) to the common exhaust path. ) Are inside the double skin, and the total heat exchanger heats the air passing through the common air supply path using the relatively high temperature air flowing out of the double skin, and this heated air creates the desiccant material. It is heated and regenerated.

In this way, in the regeneration mode, the desiccant material is regenerated by effectively utilizing the heat energy of the air in the double skin, so that it is not necessary to separately provide a heat source device for generating the heat energy for regeneration, and the regeneration can be performed. It is possible to reduce the cost and further improve the energy saving performance.

Further, in the regeneration mode, the air in the double skin is not directly supplied to the desiccant material, but the air in the double skin is heated by the total heat exchanger to heat the air passing through the common air supply path, and this heating is performed. The air is supplied to the desiccant material. Therefore, it is possible to eliminate the need for a flow path including a blower for directly supplying the air in the double skin to the desiccant material, which is more advantageous in terms of cost and miniaturization.

Further, the air dehumidified by the desiccant material in the normal mode and the air for heating and regenerating the desiccant material in the regeneration mode are supplied to the desiccant material through the same flow path (common air supply path). Here, when the air flow path dehumidified by the desiccant material (the former flow path) and the air flow path for heating and regenerating the desiccant material (the latter flow path) are provided separately. In the desiccant material, it is necessary to alternately change (replace) the portion arranged corresponding to the former flow path and the portion arranged corresponding to the latter flow path. Therefore, the desiccant material must be configured to be movable (for example, rotatable). In this regard, according to the above means 1, the air dehumidified by the desiccant material and the air for heating and regenerating the desiccant material are supplied to the desiccant material through the same flow path (common air supply path). Therefore, it is not necessary to configure the desiccant material to be movable, and the desiccant material can be arranged in a fixed state. Therefore, the cost can be further reduced and the size can be further reduced as compared with the case where the desiccant material is configured to be movable.

In addition, the flow of air (regeneration air) supplied to the desiccant material in the regeneration mode and the flow of air (dehumidified air) supplied to the desiccant material during dehumidification (normal mode) should be the same. Can be done. Therefore, the heated air can be more reliably applied to the portion of the desiccant material on which the moisture is adsorbed, and the moisture can be effectively evaporated. As a result, the desiccant material can be efficiently regenerated.

Further, in the regeneration mode, the air is cooled by the heat of vaporization of water vapor generated when the desiccant material is heated (during regeneration), and the cooled air is supplied into the double skin. Therefore, it is possible to replace the air in the double skin by using the air from the outside whose dry-bulb temperature is relatively low due to the heat of vaporization. As a result, it is possible to suppress an excessive temperature rise in the double skin, and by extension, various problems due to the excessive temperature rise (for example, an increase in heat transfer through the inner partition of the air temperature in the double structure which is an air layer). It is possible to more reliably suppress the occurrence of an increase in the heat load in the living room and deterioration of the structure due to heating of the double structure.

Further, according to the above means 1, the cooling means can cool the air passing between the total heat exchanger and the desiccant material in the common air supply path. Therefore, when the regeneration mode is switched to the normal mode, even if the desiccant material has heat due to the regeneration up to that point, the air is cooled by the cooling means to raise the temperature to the living room. It is possible to more reliably prevent the air from being supplied. As a result, even immediately after switching from the reproduction mode to the normal mode, it is possible to more reliably make the air introduced and supplied to the living room from the outside comfortable for the personnel in the living room. In addition, even in the normal mode, the temperature of the circulating air in the living room can be adjusted by cooling the heating of the outside air by the heat of adsorption generated when dehumidifying the air introduced from the outside with the desiccant material by the cooling means. The heat load of the air conditioner to be performed can be reduced more reliably.

Means 2. The ventilation device according to means 1, wherein at least the moisture-condensed drain water in the air discharged from a temperature controller capable of adjusting the air temperature is used as the refrigerant.

According to the above means 2, by using the water-condensed drain water in the air discharged from a temperature controller such as an air conditioner or a refrigerator / freezer and discarded as wastewater as a refrigerant, extra electric energy is used to cool the air by the cooling means. Can be done without. This water-condensed drain water in the air is cooled to a temperature lower than the air that has been temperature-controlled by a temperature controller on the surface of the dehumidifying coil, and has sufficient potential as cold heat, but is drained as free water. It was just an existence. Therefore, the cold energy of the water-condensed drain water in the air that is normally simply discharged can be effectively used, and better performance can be obtained in terms of energy saving performance and environmental performance.

Means 3. The device body
A first blower fan provided corresponding to a first series of passages communicating from the inside of the double skin to the living room and for sending air in the double skin to the living room.
Means 1 provided corresponding to a second communication portion that communicates from the living room to the inside of the double skin, and includes a second blower fan for sending air in the living room into the double skin. Or the ventilation device according to any one of 2.

According to the above means 3, for example, in winter, by operating the first blower fan and the second blower fan, air can be exchanged in the double skin and between the living room. As a result, the living room can be warmed by utilizing the heat of the air in the double skin, and the cost and air conditioning load related to heating in the air circulation air conditioner in the living room can be reduced. In summer, etc., by stopping both blower fans, it is possible to prevent the high temperature air in the double skin from moving into the living room.

Means 4. A determination means for determining whether or not the device main body can operate in the reproduction mode, and
When it is determined by the determination means that the device main body can operate in the reproduction mode, the operation mode in the device main body can be switched from the normal mode to the reproduction mode. With means,
The determination means is for acquiring time information acquisition means for acquiring information on time, concentration information acquisition means for acquiring information on carbon dioxide concentration in the living room, and information on the presence or absence of a person in the living room. Described in any one of means 1 to 3, characterized in that it is determined whether or not the operation in the reproduction mode is possible based on at least two pieces of information acquired from at least two of the person presence / absence information acquisition means. Ventilation system.

According to the above means 4, the operation mode of the apparatus main body can be automatically switched from the normal mode to the reproduction mode based on the determination result by the determination means, so that the convenience can be improved.

Further, according to the above means 4, the determination means is in the reproduction mode based on at least two pieces of information: information on the time, information on the carbon dioxide concentration in the living room, and information on the presence or absence of a person in the living room. Determine if the operation is possible. Therefore, it is possible to more accurately grasp the time when the room can be operated in the playback mode, that is, the time when there is no problem even if the ventilation in the living room is stopped in the normal mode, and the operation in the playback mode should be performed at a more appropriate time. Can be done.

The time information acquisition means can be configured by, for example, an IC for realizing a clock function, the concentration information acquisition means can be configured by, for example, a CO ₂ sensor, and the presence / absence information acquisition means can be, for example. A heat sensor that detects the heat generated by the human body through clothes in the living room by detecting infrared rays, an ultrasonic sensor that detects the movement of a person at a certain point in the living room by blocking it using ultrasonic waves, and a person. It can be configured by a motion sensor such as a person detection device that detects the presence or absence of a person by grasping the usage status of the WiFi radio wave in the living room used by the mobile terminal carried by the user.

Means 5. A ventilation system including a plurality of the device main bodies according to any one of the above means 1 to 4.
It has a drain tank for storing at least the air moisture condensed drain water discharged from a temperature controller capable of adjusting the air temperature, and the air moisture condensed drain water stored in the drain tank is used as the refrigerant. Configured
A ventilation system comprising a cooling timing control means for controlling the cooling means so that the number of the device main bodies that simultaneously cool the air by the cooling means is smaller than the total number of the device main bodies.

According to the above means 5, similarly to the above means 2, the air is cooled by the cooling means using the moisture condensed drain water in the air as a refrigerant, so that the cold energy of the drain water can be effectively used. , Better performance can be obtained in terms of energy saving performance and environmental performance.

Further, according to the means 5, the cooling means is controlled by the cooling timing control means so that the number of the device main bodies that simultaneously cool the air by the cooling means is smaller than the total number of the device main bodies. For example, in each device main body, the cooling means is controlled so that the air is cooled in order (in rotation). Therefore, it is possible to more reliably prevent the air from being insufficiently cooled by the cooling means due to the shortage of drain water.

It is a schematic diagram which shows the schematic structure of the office building, the ventilation system and the like in 1st Embodiment. In the first embodiment, it is a schematic diagram which shows the schematic structure of the apparatus main body part and the like. It is a schematic diagram for demonstrating the flow of air in a normal mode in 1st Embodiment. It is a schematic diagram for demonstrating the flow of air in a reproduction mode in 1st Embodiment. In the second embodiment, it is a schematic diagram which shows the schematic structure of the computer building and the like. In the third embodiment, it is a schematic diagram which shows the schematic structure of the store building, the apparatus main body and the like. In the third embodiment, it is a schematic diagram for demonstrating the flow of air in a normal mode. In the third embodiment, it is a schematic diagram for demonstrating the flow of air in a reproduction mode.

Hereinafter, embodiments will be described with reference to the drawings.
[First Embodiment]
As shown in FIGS. 1 and 2, the ventilation system 1 has a room 102 provided in the office building 101 as a building, and has a harmful gas such as exhaled air generated indoors for the health and hygiene of human beings in the room 102. , Odor, dust, etc. are for introducing the dust-removed outside air and performing ventilation control for exhausting a part of the indoor air containing the substance instead. First, the office building 101 in which the ventilation system 1 is provided will be described. In FIG. 1 and the like, the office building 101 and the ventilation device 3 described later are shown separately for convenience of explanation, but in reality, ventilation is performed at a predetermined position such as a part of the living room 102 in the office building 101. The device 3 is installed. Further, in FIG. 2, for convenience of illustration, the office building 101 and one living room 102 of the office building 101 and the like are shown separately.

The office building 101 is a relatively high-rise building having a plurality of living rooms 102 used for offices and the like, and includes an outer wall portion and a roof portion. The outer wall of the office building 101 has a double-layered window and wall structure for the purpose of reducing the once-through load of the building due to the air layer inside the wall and reducing the solar radiation load, at least by heating the internal air by solar radiation. It is composed of double skin 103. The double skin 103 is provided over each floor of the office building 101. Further, the double skin 103 is provided at a position adjacent to the living room 102 on each floor, and the internal space of the double skin 103 and the internal space of the living room 102 are defined by the wall portion 104. The double skin 103 has a structure composed of, for example, outdoor glass (outer glass), indoor glass (inner glass, which corresponds to the wall portion 104), and an intermediate layer (internal space) thereof. An opaque plate may be used instead of glass.

Further, in each living room 102, a CO ₂ sensor 105 as a concentration information acquisition means and a heat sensor 106 as a person presence / absence information acquisition means are provided. The CO ₂ sensor 105 is for acquiring information on the carbon dioxide concentration in the living room 102, and the heat sensor 106 detects the heat generated by the human body in the living room 102 through clothes by detecting infrared rays or the like. This is for acquiring information on the presence or absence of a person in the living room 102. The information acquired by the CO ₂ sensor 105 and the heat sensor 106 is output to the control device 5 described later. Although FIG. 2 shows a state in which one CO ₂ sensor 105 and one heat sensor 106 are provided in the living room 102, the number and location of the CO ₂ sensor 105 and the heat sensor 106 can be changed as appropriate. Is.

Further, outside the office building 101, an outdoor unit (not shown) of the air conditioner 107 that circulates and regulates the temperature of the indoor air in order to adjust the temperature and humidity of the air in the living room 102 is provided. In the present embodiment, the air conditioner 107 (indoor unit) corresponds to the temperature controller. When the air conditioner 107 circulates and air-conditions the air in the living room 102 (for example, when the air conditioner 107 cools the inside of the living room 102), the moisture in the air condenses on the surface of the cooling coil of the air conditioner 107 (indoor unit). Then, the moisture condensed drain water in the air can be discharged.

Next, the ventilation system 1 will be described. The ventilation system 1 includes a drain water recovery / supply device 2 and a ventilation device 3.

The drain water recovery / supply device 2 collects and stores the air-moisture-condensed drain water discharged from the air conditioner 107, and then stores the stored air-moisture-condensed drain water in the ventilation device 3 (particularly, the cooling coil 43 described later). ) Is to be supplied. The drain water recovery / supply device 2 includes a drain water recovery path 21, a drain tank 22, and a drain water supply path 23.

The drain water recovery path 21 is a flow path for condensed drain water in the air that connects the air conditioner 107 (outdoor unit) and the drain tank 22, and is an outdoor unit of each air conditioner 107 (outdoor unit) via the drain water recovery path 21. ), The water-condensed drain water in the air is sent to the drain tank 22. The moisture-condensed drain water in the air collected through the drain water recovery path 21 is stored in the drain tank 22.

The drain water supply path 23 is a flow path for condensed drain water in the air that connects the drain tank 22 and a plurality of device main bodies 4 (particularly the cooling coil 43) described later. A delivery pump 24 is installed in the drain water supply path 23, and by the operation of the delivery pump 24, the moisture-condensed drain water in the air stored in the drain tank 22 passes through the drain water supply path 23 to the main body of each device. It is designed to be sent to the unit 4 (particularly the cooling coil 43). The drain water sent to the apparatus main body 4 passes through the inside of the cooling coil 43 and then is discharged through a predetermined drain water discharge path 26.

Further, in the drain water supply path 23, a supply target switching valve 25 is installed in each of the flow paths individually connected to each device main body 4. The supply target switching valve 25 is used to switch the device main body 4 (cooling coil 43) to which the air moisture condensed drain water is supplied from the drain tank 22.

The ventilation device 3 includes a control device 5 that controls the operation of the device main body 4 and the device main body 4. The device main body 4 and the control device 5 may be one-to-one or many-to-one.

The device main body 4 is provided one or more for each living room 102, and is provided with an air supply path 41, a total heat exchanger 42, a cooling coil 43 as a cooling means, a desiccant material 44, and a first as an air supply target switching means. It includes an on-off valve 45a and a second on-off valve 45b, an exhaust passage 46, and a third on-off valve 47a and a fourth on-off valve 47b as exhaust target switching means. Although FIG. 2 shows the configuration of the device main body 4 of 1, the other device main bodies 4 also have the same configuration.

The supply air passage 41 is a common supply air passage 413 into which air from the outside flows, and a first supply destination air passage 411 and a second supply destination supply which are branched and formed so as to be connected to the most downstream portion of the common air supply passage 413, respectively. It has an air passage 412. The air outlet in the first supply destination air passage 411 is set in the double skin 103, while the air outlet in the second supply destination air passage 412 is set in the living room 102.

The total heat exchanger 42 has, for example, a total heat exchange element which is a static total heat exchanger, an air supply fan that sucks in air from the outside and supplies air, and an exhaust fan that exhausts exhaust gas to the outside. A flow path through which air passes in the common air supply passage 413 and a flow path through which air passes in the common exhaust passage 463, which will be described later, are provided. These flow paths are partitioned by, for example, a partition (not shown) made of a material having heat transfer property and moisture permeability. The total heat exchanger 42 exchanges total heat between the air passing through the common air supply passage 413 and the air passing through the common exhaust passage 463.

Regarding the air supply taken into the building from the total heat exchange element, in the common air supply path 413, external air is conveyed from the outside into the common air supply path 413 by the operation of the air supply fan of the total heat exchanger 42 ( (Inflowing), this air is blown out into the living room 102 and the double skin 103 through the supply destination air passages 411 and 412. That is, the supply destination of the air passing through the common air supply path 413 is configured to branch into the double skin 103 and the living room 102.

The cooling coil 43 is installed between the total heat exchanger 42 and the desiccant material 44 in the common air supply path 413, and cools the air passing through the common air supply path 413 by flowing a predetermined refrigerant inside. In the present embodiment, the water-condensed drain water in the air stored in the drain tank 22 is used as the refrigerant.

The desiccant material 44 includes a breathable element filled or coated with a desiccant (desiccant) for adsorbing moisture. The desiccant material 44 is arranged in the common air supply passage 413 downstream of the cooling coil 43, and dehumidifies the air passing through the common air supply passage 413 by adsorbing moisture by the desiccant. Since dehumidification is performed by adsorption, heat of adsorption is generated as a change on the temperature line of the isobaric bulb. Further, the desiccant material 44 is arranged in a fixed state, and is configured not to have a moving mechanism (for example, a rotating mechanism) in particular.

Further, the desiccant material 44 is configured to release the water adsorbed on the desiccant to the outside by being heated by itself. That is, the desiccant material 44 is capable of returning (that is, regenerating) to a state in which water can be sufficiently adsorbed by being heated.

The first on-off valve 45a and the second on-off valve 45b are for switching the supply destination of the air passing through the common air supply passage 413 into the living room 102 or the double skin 103. The first on-off valve 45a is provided in the first supply destination air supply passage 411, and switches the open / closed state of the first supply destination air supply passage 411. The second on-off valve 45b is provided in the second supply destination air supply passage 412, and switches the open / closed state of the second supply destination air supply passage 412.

Further, both on-off valves 45a and 45b are configured to be operated and controlled by a control device 5 (particularly, an operation mode switching unit 53 described later). When the air supply destination through the common supply air passage 413 is set in the living room 102, the control device 5 closes the first supply destination air supply passage 411 while the second supply destination air supply passage 412. Both open / close valves 45a and 45b are controlled so that is in the open state. On the other hand, when the supply destination of the air passing through the common air supply path 413 is within the double skin 103, the control device 5 opens the first supply destination air supply path 411 while the second supply destination supply. Both open / close valves 45a and 45b are controlled so that the air passage 412 is closed.

The exhaust passage 46 includes a common exhaust passage 463 through which air discharged to the outside passes, and a first inflow source exhaust passage 461 and a second inflow source exhaust passage 462 connected to the uppermost stream portion of the common exhaust passage 463, respectively. There is. The air suction port in the first inflow source exhaust passage 461 is set in the double skin 103, while the air suction port in the second inflow source exhaust passage 462 is set in the living room 102. Further, as described above, due to the operation of the exhaust fan provided in the total heat exchanger, air is sucked (inflowed) into the inflow source exhaust passages 461 and 462 from the living room 102 and the double skin 103, and this air is introduced. It is designed to be exhausted to the outside through the common exhaust passage 463. That is, the inflow source of air into the common exhaust passage 463 is configured to be both in the double skin 103 and in the living room 102.

The third on-off valve 47a and the fourth on-off valve 47b are for switching the inflow source of air into the common exhaust passage 463 into the living room 102 or the double skin 103. The third on-off valve 47a is provided in the first inflow source exhaust passage 461, and switches the open / closed state of the first inflow source exhaust passage 461. The fourth on-off valve 47b is provided in the second inflow source exhaust passage 462, and switches the open / closed state of the second inflow source exhaust passage 462.

Further, both the on-off valves 47a and 47b are configured to be operated and controlled by the control device 5 (particularly, the operation mode switching unit 53 described later) like the first on-off valve 45a and the second on-off valve 45b described above. There is. When the inflow source of air into the common exhaust passage 463 is in the living room 102, the control device 5 closes the first inflow source exhaust passage 461 while opening the second inflow source exhaust passage 462. As described above, both on-off valves 47a and 47b are controlled. On the other hand, when the inflow source of air into the common exhaust passage 463 is within the double skin 103, the first supply destination air passage 411 is opened by the control device 5, while the second supply destination air passage 412 is opened. Both open / close valves 47a and 47b are controlled so that the valve is closed.

In addition, the device main body 4 has a first blower fan 48a and a second blower fan 48b. The first blower fan 48a is provided corresponding to the first series of communication portions 104a communicating from the inside of the double skin 103 to the inside of the living room 102. By the operation of the first blower fan 48a, the air in the double skin 103 can be sent into the living room 102. On the other hand, the second blower fan 48b is provided corresponding to the second communication portion 104b that communicates from the living room 102 to the double skin 103. By the operation of the second blower fan 48b, the air in the living room 102 can be sent into the double skin 103.

Further, the device main body 4 can be operated in the normal mode or the reproduction mode. The normal mode is a mode for sending comfortable outside air to the inside of the living room 102, and the regeneration mode is a mode for regenerating the desiccant material 44.

In the normal mode, as shown in FIG. 3, the first and second on-off valves 45a and 45b set the air supply destination through the common air supply passage 413 to the living room 102, and the third and fourth on-off valves. By 47a and 47b, the inflow source of air into the common exhaust passage 463 is set in the living room 102. As a result, the air that has passed through the total heat exchanger 42 and the desiccant material 44 is supplied into the living room 102 through the air supply passage 41, and a part of the air in the living room 102 passes through the exhaust passage 46 to the outside. It will be in a state of being discharged.

On the other hand, in the reproduction mode, as shown in FIG. 4, the first and second on-off valves 45a and 45b set the air supply destination through the common air supply path 413 to the inside of the double skin 103, and the third and third valves. (Iv) The inflow source of air into the common exhaust passage 463 is set in the double skin 103 by the opening / closing valves 47a and 47b. As a result, the air that has passed through the total heat exchanger 42 and the desiccant material 44 is supplied into the double skin 103 through the air supply passage 41, and the air in the double skin 103 is discharged to the outside through the exhaust passage 46. It will be in a state of being. In this state, the total heat exchanger 42 heats the air flowing out of the double skin 103 and passing through the common exhaust passage 463 to heat the air passing through the common air supply passage 413, and the heated air is used to heat the air. The desiccant material 44 can be heated and regenerated.

Further, the operation mode of the device main body 4 is switched by the control device 5. Therefore, next, the control device 5 will be described.

The control device 5 is for controlling the operation of each device main body 4, and is composed of, for example, a computer system including a CPU, a memory, an input / output terminal, and the like. The control device 5 includes a time information acquisition unit 51 as a time information acquisition means, a determination unit 52 as a determination unit, an operation mode switching unit 53 as an operation mode switching means, and a cooling timing control unit 54 as a cooling timing control means. (See FIGS. 1 and 2). In the present embodiment, the time information acquisition unit 51, the determination unit 52, and the operation mode switching unit 53 are commonly used in the operation control of each device main unit 4, but these are commonly used in the device main unit 4. It may be provided for each.

The time information acquisition unit 51 functions as a clock for grasping the current time and a switch for matching the scheduled set time and the current time, and is built in the control device 5 in the present embodiment. It is composed of an IC for realizing the clock function.

The determination unit 52 provides information on the time acquired from the time information acquisition unit 51, information on the carbon dioxide concentration in the living room 102 acquired from the CO ₂ sensor 105, and information on the presence or absence of a person in the living room 102 acquired from the heat sensor 106. Based on this, it is determined for each device main body 4 whether or not the operation in the reproduction mode is possible. In the present embodiment, the determination unit 52 determines that the carbon dioxide concentration in the living room 102 is lower than a predetermined value and there is no person in the living room 102 at the time from night to early morning based on the acquired information. When it is assumed that the operation in the reproduction mode is possible, it is determined. Of course, this determination method is an example and can be changed as appropriate. Further, for example, the device main body 4 to be determined whether or not the operation in the reproduction mode is possible may be set differently for each day of the week.

The determination unit 52 determines whether or not the operation in the reproduction mode is possible based on at least two pieces of information acquired from at least two of the time information acquisition unit 51, the CO ₂ sensor 105, and the heat sensor 106. It may be something to do. Further, instead of or in addition to the heat sensor 106, as a means for acquiring information on the presence or absence of a person, an ultrasonic sensor that detects the movement of a person at a certain point in the living room 102 by shielding or the like using ultrasonic waves, and further, a person Other types of motion sensors such as a person detection device that grasps the usage status of WiFi radio waves and the like in the living room 102 used by the portable mobile terminal and detects the presence or absence of a person in the living room 102 may be used.

The operation mode switching unit 53 is for switching the operation mode in the device main body 4. When the determination unit 52 determines that the operation in the reproduction mode is possible, the operation mode switching unit 53 switches the operation mode of the apparatus main unit 4 related to this determination from the normal mode to the reproduction mode. Further, when the operation mode switching unit 53 grasps that the current time has reached the playback mode end time, which will be described later, based on the information regarding the time acquired from the time information acquisition unit 51, the operation mode switching unit 53 sets the operation mode in the device main unit 4. Switch from playback mode to normal mode.

The cooling time control unit 54 is for setting the reproduction mode end time indicating the switching time from the reproduction mode to the normal mode, and selectively supplying drain water to the apparatus main body 4 (cooling coil 43). is there. The cooling time control unit 54 sets the reproduction mode end time for each device main unit 4 whose operation mode is switched from the normal mode to the reproduction mode. In the present embodiment, the cooling time control unit 54 basically sets the switching time from the normal mode to the reproduction mode as the reference time, and ends the reproduction mode at the time when the preset reproduction operation time elapses from the reference time. Set to the time.

However, in the cooling timing control unit 54, in each device main body 4 so that the number of device main bodies 4 whose predetermined cooling execution periods overlap in time is less than the preset number of simultaneous operations. Set the playback mode end time. The cooling execution period is a period starting from the end time of the regeneration mode and ending when a predetermined fixed time has elapsed from the end of the regeneration mode, and is a period during which air is cooled by the cooling coil 43. is there. Further, the number of simultaneous operations is set to be less than the total number of the device main body 4 of the ventilation system 1, and is appropriately set according to the amount of drain water that can be stored in the drain tank 22.

In the present embodiment, for example, while the number of simultaneous operations is set to 3, if the above-mentioned basic playback mode end time setting method is used, the cooling execution periods will overlap in time. When the number of units 4 is four or more, the cooling time control unit 54 sets the playback mode end time in each device main unit 4 so that the number of such device main units 4 is three or less. Be adjusted. In the present embodiment, the cooling timing control unit 54 is such that the air is cooled by the cooling coil 43 only in one device main body 4, or the cooling coils in a plurality of device main bodies 4 having less than the number of simultaneous operations. The reproduction mode end time is set so that the air is cooled by 43 at the same time. In the cooling timing control unit 54, for example, the cooling execution period in each device main body 4 is different, that is, the air is cooled by the cooling coil 43 in a predetermined rotation (in order). The playback mode end time in each device main body 4 may be set.

Further, the cooling time control unit 54 controls the operation of the cooling coil 43 so that the cooling coil 43 of the device main body 4 related to the set reproduction mode end time performs the cooling operation at the set reproduction mode end time. .. More specifically, the cooling timing control unit 54 controls the supply target switching valve 25 so that the water-condensed drain water in the air is supplied to the cooling coil 43 of the device main body 4 related to the end time of the reproduction mode. The operation of the cooling coil 43 is controlled by opening the drain water supply path 23 related to the cooling coil 43. In the present embodiment, since the reproduction mode end time is set as described above, the air is cooled by the cooling coil 43 separately for each one or a plurality of device main units 4. Further, by setting the reproduction mode end time as described above, as a result, the number of the device main bodies 4 that simultaneously cool the air by the cooling coil 43 is smaller than the total number of the device main bodies 4. , The operation of the cooling coil 43 will be controlled.

When the cooling execution period elapses after the supply of drain water to the cooling coil 43 is started, the cooling timing control unit 54 controls the supply target switching valve 25 to condense water in the air to the cooling coil 43. Stop the supply of.

As described in detail above, according to the present embodiment, in the normal mode, the supply destination of air (air from the outside) passing through the common air supply passage 413 and the inflow source (exhaust) of air to the common exhaust passage 463. The inflow source of the air to be generated) is set to be in the living room 102. Then, the air from the outside is supplied into the living room 102 via the total heat exchanger 42 and the desiccant material 44. The total heat exchange between the outside air and the air discharged from the inside of the living room 102 to the outside is performed by the total heat exchanger 42, so that the temperature of the outside air supplied into the living room 102 goes out of the living room 102. It is closer to the temperature of the discharged air. Further, the desiccant material 44 adsorbs the moisture contained in the air from the outside, so that the humidity of the air supplied into the living room 102 is reduced.

By controlling the temperature and reducing the humidity of the air supplied into the living room 102 in this way, the air is supplied into the living room 102 at a time when the temperature and humidity of the outside air tend to be relatively high, such as in summer. It is possible to make the air more comfortable for the personnel in the living room 102. Further, the air conditioning load in the air conditioner 107 that air-conditions the living room 102 can be reduced, and thus good performance can be obtained in terms of energy saving performance and environmental performance (CO ₂ emission, etc.). Furthermore, since dehumidification is performed using the desiccant material 44 that adsorbs water instead of a type of dehumidifier that dehumidifies air by compression operation or the like, even if the dry bulb temperature rises slightly due to the heat of adsorption, the subsequent dehumidification The latent heat load process of dehumidifying in a place where the refrigerant temperature and the air temperature in the cooling coil of the air conditioner 107 that processes the air conditioner load are close to each other can be replaced with the sensible heat load cooling process that can take a large temperature difference in the logarithmic average temperature difference. As a result, the number of rows of cooling coils of the air conditioner 107 that regulates the circulation temperature can be reduced, so that the cost related to dehumidification can be reduced and the size of the device can be reduced.

On the other hand, since the amount of water that can be adsorbed by the desiccant material 44 is limited, in order to maintain the dehumidifying function of the desiccant material 44, the desiccant material 44 must be regenerated, that is, the water adsorbed by heating the desiccant material 44. It is necessary to evaporate. In this respect, in the present embodiment, in the regeneration mode, the supply destination of the air (air from the outside) passing through the common air supply passage 413 and the inflow source of the air (the inflow source of the discharged air) to the common exhaust passage 463. ) Are in the double skin 103. Then, the air that has become relatively hot as a result of continuous application of solar heat to the air layer in the double structure that has flowed out of the double skin 103 is used by exchanging heat with the total heat exchanger 42. The air passing through the common air supply passage 413 is heated, and the desiccant material 44 is heated by the heated air to continue to be regenerated.

As described above, in the regeneration mode, since the desiccant material 44 is regenerated by effectively utilizing the heat energy of the air in the double skin 103, it is not necessary to separately provide a heat source device for generating the heat energy for regeneration. The regenerated heat is derived from solar heat, and it is possible to reduce the cost related to the regenerated heat and further improve the energy saving performance.

Further, in the regeneration mode, the air in the double skin 103 is not directly supplied to the desiccant material 44, but the air passing through the common air supply path 413 is heated by the total heat exchanger 42 using the air in the double skin 103. Then, this heated air is supplied to the desiccant material 44. Therefore, it is possible to eliminate the need for a flow path for directly supplying the air in the double skin 103 to the desiccant material 44, which is more advantageous in terms of cost and miniaturization.

Further, the air dehumidified by the desiccant material 44 in the normal mode and the air for heating and regenerating the desiccant material 44 in the regeneration mode pass through the same flow path (common air supply path 413) to the desiccant material 44. Be supplied. Here, when the air flow path dehumidified by the desiccant material 44 (the former flow path) and the air flow path for heating and regenerating the desiccant material 44 (the latter flow path) are separately provided. It is necessary to alternately change (replace) the portion of the desiccant material 44 that is arranged corresponding to the former flow path and the portion that is arranged corresponding to the latter flow path. Therefore, the desiccant material 44 has to be configured to be movable (for example, rotatable). In this respect, in the present embodiment, the air dehumidified by the desiccant material 44 and the air for heating and regenerating the desiccant material 44 pass through the same flow path (common air supply path 413) to the desiccant material 44. Since it is supplied, it is not necessary to configure the desiccant material 44 to be movable, and the desiccant material 44 can be arranged in a fixed state. Therefore, the cost can be further reduced and the size can be further reduced as compared with the case where the desiccant material 44 is configured to be movable.

In addition, the flow of air (regeneration air) supplied to the desiccant material 44 in the regeneration mode and the flow of air (dehumidified air) supplied to the desiccant material 44 during dehumidification (normal mode) are the same. can do. Therefore, the heated air can be more reliably applied to the portion of the desiccant material 44 on which the moisture is adsorbed, and the moisture can be effectively evaporated. As a result, the desiccant material 44 can be efficiently regenerated.

Further, in the regeneration mode, the air is cooled by the heat of vaporization of water vapor generated when the desiccant material 44 is heated (during regeneration), and the cooled air is supplied into the double skin 103. Therefore, it is possible to replace the air in the double skin 103 by using the air from the outside which is relatively low in the dry-bulb temperature due to the heat of vaporization. As a result, it is possible to suppress an excessive temperature rise in the double skin 103, and as a result, various problems due to the excessive temperature rise (for example, an increase in heat transfer through the inner partition of the air temperature in the double structure which is an air layer). It is possible to more reliably suppress the occurrence of an increase in the heat load in the living room 102 due to the above, deterioration of the structure due to heating of the double structure, etc.).

Further, the cooling coil 43 can cool the air passing between the total heat exchanger 42 and the desiccant material 44 in the common air supply path 413. Therefore, when the regeneration mode is switched to the normal mode, even if the desiccant material 44 has heat due to the regeneration up to that point, the air is cooled by the cooling coil 43 in the living room 102. It is possible to more reliably prevent the supply of hot air to the air. As a result, even immediately after switching from the reproduction mode to the normal mode, it is possible to more reliably make the air introduced and supplied into the living room 102 from the outside comfortable for the personnel in the living room 102. Further, even in the normal mode, the cooling coil 43 cools the heating of the outside air due to the heat of adsorption generated when the desiccant material 44 dehumidifies the introduced air from the outside, so that the circulating air in the living room 102 can be circulated. The heat load of the air conditioner 107 that controls the temperature can be reduced more reliably.

In addition, by using the moisture condensed drain water in the air discharged from the air conditioner 107 and discarded as wastewater as a refrigerant, the air can be cooled by the cooling coil 43 without using extra electric energy. The moisture-condensed drain water in the air is cooled to a temperature lower than the air that has been temperature-controlled by the temperature controller (air conditioner 107) on the surface of the dehumidifying coil (coil built in the air conditioner 107), and is used as cold heat. Although it had sufficient potential, it was only drained as free water. Therefore, the cold energy of the water-condensed drain water in the air that is normally simply discharged can be effectively used, and better performance can be obtained in terms of energy saving performance and environmental performance.

Further, for example, in winter, by operating the first blower fan 48a and the second blower fan 48b, air can be exchanged between the double skin 103 and the living room 102. As a result, the inside of the living room 102 can be heated by utilizing the heat of the air in the double skin 103 (heat derived from solar heat and continuously given through the outer wall), and the heating in the air conditioner 107 of the air circulation in the living room 102. It is possible to reduce the cost and air conditioning load. In summer or the like, by stopping both blower fans 48a and 48b, it is possible to prevent the high temperature air in the double skin 103 from moving into the living room 102.

Further, in the present embodiment, the operation mode of the device main body 4 can be automatically switched from the normal mode to the reproduction mode based on the determination result by the determination unit 52, so that the convenience can be improved.

Further, whether the determination unit 52 can operate in the reproduction mode based on at least two pieces of information regarding the time, the information regarding the carbon dioxide concentration in the living room 102, and the information regarding the presence or absence of a person in the living room 102. Judge whether or not. Therefore, it is possible to more accurately grasp the time when the operation can be performed in the reproduction mode, that is, the time when there is no problem even if the ventilation in the living room 102 in the normal mode is stopped, and the operation in the reproduction mode is performed at a more appropriate time. be able to.

Further, the cooling timing control unit 54 controls the cooling coil 43 so that the number of the device main body 4 that simultaneously cools the air by the cooling coil 43 is smaller than the total number of the device main body 4. Therefore, it is possible to more reliably prevent the air from being sufficiently cooled by the cooling coil 43 due to the shortage of drain water.
[Second Embodiment]
Next, the second embodiment will be described focusing on the differences from the first embodiment. As shown in FIG. 5, the computer building 111 as a building in the second embodiment has a configuration having a plurality of living rooms 102 and a computer room 112 in which a large number of computer systems and related devices are installed. ing. In FIG. 5, for convenience of explanation, the computer building 111 and the living room 102 of 1 of the computer building 111 are shown separately. Further, the computer building 111 is provided with the double skin 103 constituting the outer wall portion, similarly to the office building 101 in the first embodiment.

Further, a plurality of air conditioners 107 (the indoor unit is shown and the outdoor unit is not shown) for air-conditioning the room corresponding to each of the living room 102 and the computer room 112 are provided, and these air conditioners are provided. Moisture-condensed drain water in the air is discharged from 107 (cooling coil of the indoor unit). The discharged air moisture condensed drain water is stored in the drain tank 22 as in the first embodiment.

On the other hand, in the second embodiment, the computer building 111 is not provided with a large number of living rooms 102, and as a result, the number of device main units 4 corresponding to the living rooms 102 is relatively small. .. Therefore, the amount of moisture-condensed drain water in the air discharged from the air conditioner 107 and stored in the drain tank 22 is sufficiently larger than the number of the apparatus main body 4.

In consideration of this point, in the second embodiment, all the device main bodies 4 are configured to be capable of simultaneously cooling the air by the cooling coil 43. Specifically, by setting the reproduction mode end time using only the basic setting method of the reproduction mode end time described in the first embodiment, the cooling coil is set in all the device main bodies 4. It is possible to cool the air by 43 at the same time.

As described above, according to the second embodiment, basically, the same effects as those of the first embodiment, such as reduction of the cost related to dehumidification and miniaturization of the device, are exhibited.
[Third Embodiment]
Next, the third embodiment will be described focusing on the differences from the first embodiment. The store building 121 as a building in the third embodiment is, for example, a convenience store or the like, and has a living room 122. The living room 122 is a backyard room where products are displayed and is installed adjacent to a sales floor room 122a for selling products and the sales floor room 122a, and is used as a space for a product warehouse and employees. It has 122b. In addition, air can be sent from the sales floor room 122a to the backyard room 122b through the vent 124. In FIG. 6, for convenience of illustration, two store buildings 121 and two living rooms 122 are shown, but in reality, there is one store building 121 and one living room 122.

Further, in the first embodiment, the double skin 103 constitutes the outer wall portion of the office building 101, whereas in the third embodiment, the double skin 123 constitutes the roof portion of the store building 121. There is. A store building 121 such as a convenience store may be a one-story building, and has a vast roof portion, and sunlight shines on it. The double skin 123 is similar to the double skin 103 in the first embodiment in that an intermediate layer is installed as an attic composed of a roof and a ceiling, and the air inside is heated by sunlight or the like. ..

Further, in the third embodiment, the drain water recovery path 21 of the drain water recovery / supply device 2 is connected to a refrigerator / freezer 127 as a temperature controller for refrigerating or freezing products by adjusting the air temperature. There is. The refrigerator / freezer 127 has an outdoor unit (not shown) provided outside the store building 121. Then, the air moisture condensed drain water generated by the air contacting the tube through which the Freon refrigerant of the refrigerator / freezer 127 (the air cooling coil possessed by the refrigerator) flows and the fin surface in close contact with the tube and the air moisture condensing is generated. It is sent to the drain tank 22 via the drain water recovery path 21 and stored in the drain tank 22.

In addition, in the third embodiment, the air outlet in the first supply air passage 411 is set in the double skin 123, while the air outlet in the second supply air passage 412 is the sales floor room. It is set within 122a. That is, the supply destination of the air passing through the common air supply passage 413 is configured to branch into the double skin 123 and the sales floor room 122a.

Further, in the third embodiment, the air suction port in the first inflow source exhaust passage 461 is set in the double skin 123, while the air suction port in the second inflow source exhaust passage 462 is in the backyard chamber 122b. Is set to. That is, the inflow source of air into the common exhaust passage 463 is configured to be both in the double skin 123 and in the backyard chamber 122b.

Further, in the third embodiment, switching from the normal mode to the reproduction mode is performed, for example, by manually operating the control device 5.

Then, in the third embodiment, in the normal mode, as shown in FIG. 7, the supply destination of the air passing through the common air supply passage 413 is set in the sales floor room 122a by the first and second on-off valves 45a and 45b. At the same time, the third and fourth on-off valves 47a and 47b make the inflow source of air into the common exhaust passage 463 into the backyard chamber 122b. As a result, the air that has passed through the total heat exchanger 42 and the desiccant material 44 is supplied into the sales floor room 122a through the air supply passage 41, and the air in the backyard chamber 122b is sent to the outside through the exhaust passage 46. It will be in a state of being discharged.

On the other hand, in the reproduction mode, as shown in FIG. 8, the first and second on-off valves 45a and 45b set the air supply destination through the common air supply path 413 to the inside of the double skin 123, and the third and third valves. (Iv) The inflow source of air into the common exhaust passage 463 is set in the double skin 123 by the opening / closing valves 47a and 47b. As a result, the air that has passed through the total heat exchanger 42 and the desiccant material 44 is supplied into the double skin 123 through the air supply passage 41, and the air in the double skin 123 is discharged to the outside through the exhaust passage 46. It will be in a state of being.

As described above, according to the third embodiment, basically, the same effects as those of the first embodiment, such as reduction of the cost related to dehumidification and miniaturization of the device, are exhibited.

The content is not limited to the description of the above embodiment, and may be implemented as follows, for example. Of course, other application examples and modification examples not illustrated below are also possible.

(A) In the above embodiment, as the refrigerant circulating inside the cooling coil 43, air moisture condensed drain water discharged from the air conditioner 107 or the refrigerator / freezer 127 is used, but other than air moisture condensed drain water. A refrigerant may be used.

(B) In the above embodiment, the office building 101, the computer building 111, and the store building 121 are mentioned as the buildings, but the buildings are not limited thereto. Therefore, the building may be a relatively high-rise store building, a facility building such as a museum, a public building such as a government office, or the like.

(C) In the above embodiment, the supply target switching means and the exhaust target switching means are each composed of two on-off valves, but the supply target switching means and the exhaust target switching means may be configured by one branch valve. Good.

(D) In the above embodiment, the total heat exchanger 42 includes an air supply fan and an exhaust fan for transporting external air and exhaust, but the total heat exchanger 42 is not limited to this, and fans are provided in the common air supply path and the common exhaust path, respectively. It is also possible to carry the air by providing the above.

1 ... Ventilation system, 3 ... Ventilation device, 4 ... Device body, 22 ... Drain tank, 41 ... Air supply path, 42 ... Total heat exchanger, 44 ... Desiccant material, 45a ... First open / close valve (switching of air supply target) Means), 45b ... Second opening / closing valve (air supply target switching means), 46 ... Exhaust passage, 47a ... Third opening / closing valve (exhaust target switching means), 47b ... Fourth opening / closing valve (exhaust target switching means), 48a ... First blower fan, 48b ... Second blower fan, 51 ... Time information acquisition unit (time information acquisition means), 52 ... Judgment unit (judgment means), 53 ... Operation mode switching unit (operation mode switching means), 54 ... Cooling Timing control unit (cooling timing control means), 101 ... office building (building), 102, 122 ... living room, 103, 123 ... double skin, 105 ... CO ₂ sensor (concentration information acquisition means), 106 ... heat sensor (person) Presence / absence information acquisition means), 107 ... Air conditioner (temperature controller), 111 ... Computer building (building), 121 ... Store building (building) 127 ... Refrigerator freezer (temperature controller), 413 ... Common air supply path, 463 … Common exhaust passage.

Claims (5)

A ventilation device provided corresponding to the living room in a building having a living room, an outer wall portion, and a roof portion.
The outer wall portion or the roof portion includes at least a double skin which is a double structure of a wall body or a ceiling body in which the air inside is heated by sunlight.
An air supply channel having a common air supply path through which air flows in from the outside and having a supply destination of air passing through the common air supply path branching into the living room and the double skin.
A desiccant material that is installed in the common air supply passage and can dehumidify the air passing through the common air supply passage by adsorbing water.
An air supply target switching means for switching the air supply destination through the common air supply path into the living room or the double skin, and
An exhaust passage having a common exhaust passage through which air discharged to the outside passes, and having an exhaust passage configured such that the inflow source of air into the common exhaust passage is in the living room and the double skin.
Exhaust target switching means for switching the inflow source of air into the common exhaust passage into the living room or the double skin, and
A total heat exchanger having a total heat exchange element capable of exchanging total heat between the air passing through the common air supply path and the air passing through the common exhaust path, an air supply fan, and an exhaust fan.
An apparatus main body provided between the total heat exchanger and the desiccant material in the common air supply path and provided with a cooling means capable of cooling the air passing through the common air supply path by flowing a predetermined refrigerant inside. Has a part,
The desiccant material is arranged in a fixed state, and is
The device main body can operate in a predetermined normal mode or a predetermined playback mode, and can be operated.
In the normal mode, the air supply target switching means sets the air supply destination through the common air supply path to the living room, and the exhaust target switching means sets the inflow source of air into the common exhaust path. By making it a living room, air that has passed through the total heat exchanger and the desiccant material is supplied to the living room through the air supply passage.
In the regeneration mode, the air supply target switching means sets the air supply destination through the common air supply path to the inside of the double skin, and the exhaust target switching means causes the inflow source of air to the common exhaust path. By being inside the double skin, the total heat exchanger heats the air that flows out of the double skin and passes through the common exhaust passage, and the air that passes through the common air supply passage is heated. A ventilation device characterized in that the desiccant material is heated by the air and is in a state of being regenerated. The ventilation device according to claim 1, wherein at least the moisture-condensed drain water in the air discharged from a temperature controller capable of adjusting the air temperature is used as the refrigerant. The device body
A first blower fan provided corresponding to a first series of passages communicating from the inside of the double skin to the living room and for sending air in the double skin to the living room.
A claim, which is provided corresponding to a second communication portion that communicates from the living room to the inside of the double skin, and is provided with a second ventilation fan for sending air in the living room into the double skin. The ventilation device according to any one of 1 and 2. A determination means for determining whether or not the device main body can operate in the reproduction mode, and
When it is determined by the determination means that the device main body can operate in the reproduction mode, the operation mode in the device main body can be switched from the normal mode to the reproduction mode. With means,
The determination means is for acquiring time information acquisition means for acquiring information on time, concentration information acquisition means for acquiring information on carbon dioxide concentration in the living room, and information on the presence or absence of a person in the living room. Any one of claims 1 to 3, wherein it is determined whether or not the operation in the reproduction mode is possible based on at least two pieces of information acquired from at least two of the person presence / absence information acquisition means. Ventilation system as described in the section. A ventilation system including a plurality of the device main body according to any one of claims 1 to 4.
It has a drain tank for storing at least the air moisture condensed drain water discharged from a temperature controller capable of adjusting the air temperature, and the air moisture condensed drain water stored in the drain tank is used as the refrigerant. Configured
A ventilation system comprising a cooling timing control means for controlling the cooling means so that the number of the device main bodies that simultaneously cool the air by the cooling means is smaller than the total number of the device main bodies.

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