Total heat exchange ventilation device and total heat exchange ventilation system

Abstract

The purpose of one embodiment of the present disclosure is to provide a total heat exchange ventilation device and a total heat exchange ventilation system in which one fan performs total heat exchange on both intake and exhaust through one ventilation port in a time-division manner and which make it possible to efficiently perform total heat exchange. A total heat exchange ventilation device according to one embodiment of the present disclosure performs ventilation in one ventilation port, the total heat exchange ventilation device being characterized by comprising: a first circulation path and a second circulation path that communicate with the indoors and the outdoors; a first total heat exchanger that communicates with the first circulation path; a first blowing unit that channels air to the first total heat exchanger and blows air according to a time-division formula with which intake and exhaust from the indoors and the outdoors can be switched; a second total heat exchanger that communicates with the second circulation path; and a second blowing unit that channels air to the second total heat exchanger and blows air according to a time-division formula with which the intake and the exhaust from the indoors and the outdoors can be switched.

Description

Total heat exchange ventilation equipment and total heat exchange ventilation system

[0001] This application claims priority to Japanese Patent Application No. 2024-012361, filed on January 31, 2024, the contents of which are incorporated herein by reference.

[0002] Conventionally, ventilation devices have been disclosed.

[0003] For example, Patent Document 1 discloses a ventilation device 1 including a sirocco fan (air blowing means) 12 that draws in outside air OA, a sirocco fan (air blowing means) 13 that draws in room air RA at room temperature, and a heat exchanger 20 that exchanges heat between the outside air OA and the room air RA by bringing them into contact with each other via a partition wall, in which the length of at least a portion of the room air passage of the heat exchanger 1 is set longer than at least a portion of the outside air passage, and the room air RA is discharged from the heat exchanger 20 before at least a portion of the room air RA is cooled to the dew point by the outside air OA.

[0004] Japanese Patent Application Laid-Open No. 2004-060945

[0005] However, the above-mentioned ventilation device is a static ventilation device, and one fan only draws in air and the other fan only exhausts air, so it lacks efficiency.

[0006] In view of the above-mentioned problems, one aspect of the present disclosure aims to provide a total heat exchange ventilation device and a total heat exchange ventilation system that can efficiently exchange total heat by using a single fan to perform total heat exchange on both intake and exhaust air from a single ventilation port in a time-division manner.

[0007] One aspect of the present disclosure is a total heat exchange ventilation device that ventilates through one ventilation opening, and is characterized by comprising a first circulation path and a second circulation path leading to the indoors and outdoors, a first total heat exchanger that is connected to the first circulation path, a first blower that circulates air through the first total heat exchanger and blows air in a time-division manner that can switch between intake and exhaust from the indoors and outdoors, a second total heat exchanger that is connected to the second circulation path, and a second blower that circulates air through the second total heat exchanger and blows air in a time-division manner that can switch between intake and exhaust from the indoors and outdoors.

[0008] A total heat exchange ventilation system according to another aspect of the present disclosure is characterized by including the total heat exchange ventilation device described above.

[0009] As described above, according to one aspect of the present disclosure, a total heat exchange ventilation device and a total heat exchange ventilation system can be provided in which one fan performs total heat exchange on both intake and exhaust air in a time-division manner from one ventilation port, enabling efficient total heat exchange.

[0010] FIG. 1 is a schematic diagram of a total heat exchange ventilation device according to the present disclosure, showing that a first blower unit takes in air and a second blower unit exhausts air. FIG. 2 is a schematic diagram of a total heat exchange ventilation device according to the present disclosure, showing that a first blower unit exhausts air and a second blower unit takes in air. FIG. 3 is a cross-sectional view schematically showing a humidity control material. FIG. 4 is a schematic diagram of a modified example of a total heat exchange ventilation device according to the present disclosure. FIG. 5 is a schematic diagram of a total heat exchange ventilation system according to the present disclosure. FIG. 6 is a diagram showing that the first total heat exchange ventilation device and the second total heat exchange ventilation device in FIG. 5 take in air. FIG. 7 is a diagram showing that the third total heat exchange ventilation device in FIG. 5 exhausts air.

[0011] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. Note that the embodiments described below do not unduly limit the content of the present disclosure set forth in the claims, and not all of the configurations described in the embodiments are necessarily essential as means for solving the problems of the present disclosure.

[0012] 1 is a diagram schematically illustrating a total heat exchange ventilation device 100 according to the present disclosure, showing a first air blower 31 performing intake and a second air blower 32 performing exhaust. As shown in FIG. 1 , the total heat exchange ventilation device 100 according to the present disclosure is a ventilation device that performs ventilation through one ventilation opening, and includes a first circulation path 11, a second circulation path 12, a first total heat exchanger 21, a second total heat exchanger 22, the first air blower 31, and the second air blower 32.

[0013] The total heat exchange ventilation device 100 is used in a house, a building, an in-vehicle device, etc. The total heat exchange ventilation device 100 is not limited to being installed in a house, a building, an in-vehicle device, etc., and may also be installed around a wall separating a space.

[0014] The configuration of the total heat exchange ventilation device 100 according to the present disclosure will be described below.

[0015] The first circulation path 11 and the second circulation path 12 are provided in one ventilation opening 10. The first circulation path 11 is a path through which air circulated to the first total heat exchanger 21 by a first blower unit 31 (described later) passes. The second circulation path 12 is a path through which air circulated to the second total heat exchanger 22 by a second blower unit 32 (described later) passes. A partition wall 13 may be provided within the ventilation opening 10, and the first circulation path 11 and the second circulation path 12 may be provided.

[0016] 1, when the circulation paths are arranged in parallel, there are two circulation paths (first circulation path 11 and second circulation path 12) because there are two total heat exchangers (first total heat exchanger 21 and second total heat exchanger 22), but when there are three total heat exchangers, there are also three circulation paths. Therefore, when the circulation paths are arranged in parallel, the number of circulation paths is at least equal to the number of total heat exchangers.

[0017] The ventilation opening 10 may be an opening for an air conditioner (an opening for connecting a drain, refrigerant piping, power supply, etc. to the outdoor unit), or a separate hole may be provided to serve as the ventilation opening 10.

[0018] The first total heat exchanger 21 communicates with the first circulation path 11. The second total heat exchanger 22 communicates with the second circulation path 12. A first connecting pipe 41 is provided to connect the first circulation path 11 and the first total heat exchanger 21 so that the air that has circulated through the first total heat exchanger 21 does not circulate through the second circulation path 12. Similarly, a second connecting pipe 42 is provided to connect the second circulation path 12 and the second total heat exchanger 22.

[0019] The first total heat exchanger 21 and the second total heat exchanger 22 are preferably made of a metal with high thermal conductivity such as aluminum, iron, copper, etc., to facilitate heat exchange. Other preferable materials include ceramics such as alumina, mullite, and cordierite, and porous materials with large surface areas, such as nonwoven fabrics made of paper, fiber, etc.

[0020] The first total heat exchanger 21 and the second total heat exchanger 22 can also be cylindrical or prismatic (block) type. The cylindrical type has high thermal resistance in the same direction within a circular plane, while the prismatic (block) type has high thermal resistance in different directions within a square plane.

[0021] The first total heat exchanger 21 and the second total heat exchanger 22 preferably have a pleated structure, a corrugated structure, or a honeycomb structure, which increases the surface area of ​​the first total heat exchanger 21 and the second total heat exchanger 22, allowing for efficient heat exchange of the blown air and achieving a desired temperature and humidity, such as low temperature and low humidity.

[0022] The first total heat exchanger 21 and the second total heat exchanger 22 each include a sensible heat section 23. The "sensible heat section" refers to a heat exchanger that mainly has a temperature exchange function.

[0023] Furthermore, the first total heat exchanger 21 and the second total heat exchanger 22 may include a latent heat section 24 in addition to the sensible heat section 23. The "latent heat section" refers to a heat exchanger that mainly has a humidity exchange function. The latent heat section 24 includes a humidity control material 50, which will be described later, and releases or absorbs moisture from the first total heat exchanger 21 depending on the ambient temperature.

[0024] The sensible heat section 23 and the latent heat section 24 may be arranged in series in the air blowing direction, or may be arranged in parallel above and below the first total heat exchanger 21 and the second total heat exchanger 22. The sensible heat section 23 and the latent heat section 24 may be made of the same material or different materials.

[0025] The first total heat exchanger 21 and the second total heat exchanger 22 may have different opening ratios and opening sizes in the sensible heat section 23 and the latent heat section 24 .

[0026] The first blower unit 31 circulates air through the first total heat exchanger 21 and blows air in a time-sharing manner, which allows switching between intake and exhaust from indoors and outdoors. The second blower unit 32 circulates air through the second total heat exchanger 22 and blows air in a time-sharing manner, which allows switching between intake and exhaust from indoors and outdoors. The time-sharing manner is a method in which the air flow direction switches between intake and exhaust over time. It is desirable that the first blower unit 31 and the second blower unit 32 switch between intake and exhaust in conjunction with each other. More specifically, when one first blower unit 31 draws air, the other second blower unit 32 exhausts air, and when one first blower unit 31 exhausts air, the other second blower unit 32 draws air. The operation is described below.

[0027] 1, the first blower 31 draws air from outdoors to indoors, with air flowing as indicated by the arrows in the first circulation path 11, the first connecting pipe 41, and the first total heat exchanger 21. On the other hand, the second blower 32 exhausts air from indoors to outdoors, with air flowing as indicated by the arrows in the second circulation path 12, the second connecting pipe 42, and the second total heat exchanger 22.

[0028] 2, after a certain period of time has passed, the first blower 31 exhausts air from indoors to outdoors, with air flowing in the first circulation path 11, the first connecting pipe 41, and the first total heat exchanger 21 as indicated by the arrows. Meanwhile, the second blower 32 draws air from outdoors to indoors, with air flowing in the second circulation path 12, the second connecting pipe 42, and the second total heat exchanger 22 as indicated by the arrows.

[0029] In this way, the first blower 31 and the second blower 32 preferably switch their air flow directions to intake or exhaust in unison over time. The time division can be achieved by controlling the intake and exhaust of the first blower 31 and the second blower 32 by a control unit (not shown). The control unit (not shown) may be included in the total heat exchange ventilator 100 or may be a separate unit. If the control unit is a separate unit, it may be connected to the total heat exchange ventilator 100 wirelessly using a communication standard such as WiFi, Bluetooth, Z-Wave, Zigbee, or Matter, or may be connected to the total heat exchange ventilator 100 by wire.

[0030] In this way, the total heat exchange ventilation device 100 according to the present disclosure allows one fan to perform total heat exchange of intake and exhaust air in a time-division manner from one ventilation opening 10, making it possible to perform total heat ventilation with one total heat exchange ventilation device 100. Therefore, the total heat exchange ventilation device 100 according to the present disclosure enables efficient total heat exchange.

[0031] It is also preferable to use a fan that can be switched between forward and reverse rotation, such as a reversible flow fan, as the first blower 31 and the second blower 32. Air intake and exhaust can be performed by switching the first blower 31 and the second blower 32 between forward and reverse rotation.

[0032] The first total heat exchanger 21 and the second total heat exchanger 22, and the first blower 31 and the second blower 32 provided in the total heat exchange ventilation device 100 are installed indoors, as shown in Figures 1 and 2. Furthermore, the first total heat exchanger 21 and the second total heat exchanger 22, and the first blower 31 and the second blower 32 are installed indoors outside the ventilation opening 10, rather than inside or outdoors in the ventilation opening 10. In this way, since the devices are not installed inside the ventilation opening 10, the size of the devices and whether they can be installed do not depend on the size of the ventilation opening 10, and the sizes and shapes of the first total heat exchanger 21 and the second total heat exchanger 22, and the first blower 31 and the second blower 32 can be selected regardless of the hole diameter of the ventilation opening 10, allowing for flexible design.

[0033] The first blower unit 31 and the second blower unit 32 may be operated or stopped depending on the required amount of ventilation. When the required amount of ventilation is large, the first blower unit 31 and the second blower unit 32 are operated with increased output. On the other hand, when the required amount of ventilation is small, the first blower unit 31 and the second blower unit 32 are operated with reduced output, or the first blower unit 31 and the second blower unit 32 are stopped, or either the first blower unit 31 or the second blower unit 32 is stopped.

[0034] In addition, both the first blower 31 and the second blower 32 may perform intake or exhaust. The intake or exhaust may be performed as appropriate depending on the required amount of ventilation. In this case, the intake and exhaust may be switched in a time-division manner.

[0035] When the difference between the indoor target temperature and the outdoor actual temperature, and the difference between the indoor target humidity and the outdoor actual humidity are small, the first fan unit 31 may take in air and the second fan unit 32 may exhaust air. In this way, when the indoor temperature is high, heat and steam (humidity) on the indoor side can be efficiently discharged, and when the indoor temperature is low, heat and steam from the outdoor side can be efficiently acquired. Therefore, this allows for more efficient heat exchange between indoors and outdoors than when ventilation is performed while performing total heat exchange in a time-sharing manner.

[0036] The difference between the indoor target temperature and the outdoor actual temperature, and the difference between the indoor target humidity and the outdoor actual humidity, can be determined by installing a thermometer and a hygrometer outdoors to measure the difference between the indoor target temperature and the outdoor actual temperature, and the difference between the indoor target humidity and the outdoor actual humidity. Alternatively, a thermometer and a hygrometer can be installed indoors to measure the indoor actual temperature and humidity. Furthermore, a control unit (not shown) can control the intake and exhaust volumes of the first and second air blowers 31 and 32 so that the indoor actual temperature and humidity become the target temperature and humidity.

[0037] Next, the humidity conditioner 50 will be described.

[0038] The humidity control material 50 absorbs or releases moisture.

[0039] The humidity control material 50 also adjusts the amount of moisture contained in the air. The humidity control material 50 has the property of absorbing (moisture absorption) moisture when the surrounding relative humidity is relatively high compared to the equilibrium humidity, and conversely, releasing (moisture desorption) moisture when the surrounding relative humidity is relatively low. Unlike desiccants such as typical type A silica gel, the humidity control material 50 repeatedly absorbs and desorbs moisture, so in principle it is effective semi-permanently.

[0040] Each component of the humidity conditioner 50 will be described below.

[0041] 3, the humidity conditioner 50 includes a water absorbent 51 containing a resin and / or a clay mineral, and a humidity control component 52. The water absorbent 51 of the humidity conditioner 50 can retain the humidity control component 52. Depending on the humidity of the environment in which the humidity conditioner 50 is placed, the humidity conditioner 50 absorbs moisture contained in the air of the location and absorbs it, or releases moisture contained in the humidity conditioner 50 into the air and releases it.

[0042] Note that "humidity control" means adjusting the relative humidity of the surrounding air so that it approaches the equilibrium humidity band of the humidity control material 50. Specifically, for example, if the equilibrium humidity of the humidity control material 50 is 50% RH, when the relative humidity of the surrounding air is higher than 50% RH, the humidity control material 50 absorbs (absorbs) moisture, and when the relative humidity of the surrounding air is lower than 50% RH, the humidity control material 50 releases (desorbs) moisture. Typically, the predetermined relative humidity band correlates with the material of the humidity control material 50. Specifically, for example, the predetermined relative humidity band correlates with the moisture content in the humidity control component 52.

[0043] The humidity-conditioning component 52 may be held not only in the water absorbent body 51 but also in a support that supports the humidity-conditioning material 50 .

[0044] The moisture-conditioning component 52 may be present inside the water absorbent body 51, or may be present separately and mixed.

[0045] Specific examples of the humidity-conditioning component 52 include salts, such as sodium formate, potassium formate, sodium propionate, potassium propionate, potassium carbonate, calcium carbonate, sodium acetate, potassium acetate, lithium acetate, sodium lactate, potassium lactate, calcium chloride, lithium chloride, magnesium chloride, potassium chloride, sodium chloride, zinc chloride, aluminum chloride, magnesium chloride, lithium bromide, calcium bromide, potassium bromide, sodium hydroxide, and sodium pyrrolidonecarboxylate. Among these, carboxylates (sodium formate, potassium formate, sodium propionate, potassium propionate, carbonates, sodium acetate, and potassium acetate) that have a threshold value for humidity-conditioning properties at a specific humidity are preferred. At least one of these metal salts is preferred.

[0046] The humidity control component 52 may contain a polyhydric alcohol in addition to the above-mentioned salt.

[0047] Specific examples of polyhydric alcohols include glycerin, propanediol, butanediol, pentanediol, trimethylolpropane, butanetriol, ethylene glycol, diethylene glycol, and triethylene glycol. Among these, polyhydric alcohols having three or more hydroxyl groups, such as glycerin, are more preferably used. The polyhydric alcohol may form a dimer or a polymer. Furthermore, only one type may be contained, or two or more types may be contained.

[0048] The water absorbent body 51 has the function of retaining the humidity-conditioning component 52. Because the water absorbent body 51 retains the humidity-conditioning component 52, it is possible to realize a humidity-conditioning material 50 with a high ratio of surface area to volume. This makes it possible to increase the rate of moisture absorption or release. Therefore, it is possible to provide a humidity-conditioning material 50 with a high humidity-conditioning rate. Furthermore, it is preferable that the water absorbent body 51 be in a powder or particulate form.

[0049] The water absorbent body 51 preferably contains at least one selected from the group consisting of a water-absorbent resin (particles, powder) and a clay mineral, which allows the water absorbent body 51 to suitably retain the humidity-conditioning component 52, thereby further enhancing the humidity-conditioning effect.

[0050] Specific examples of the water-absorbent resin material include ionic resins and nonionic resins. Examples of the ionic resin include alkali metal salts of polyacrylic acid (such as sodium polyacrylate) and starch-acrylate graft polymers, with alkali metal salts of polyacrylic acid being preferred. Specific examples of alkali metal salts of polyacrylic acid include sodium polyacrylate. Examples of the nonionic resin include vinyl acetate copolymers, maleic anhydride copolymers, polyvinyl alcohol, and polyalkylene oxides.

[0051] Specific examples of clay minerals include silicate minerals such as smectite, sepiolite, attapulgite, kaolinite perlite, and dolomite, and zeolites.

[0052] When the moisture-conditioning component 52 is present, the weight ratio of the total weight thereof to the water absorbent body 51 is preferably 1:1 to 3:7. This ensures appropriate amounts of the water absorbent body 51 and the moisture-conditioning component 52, further enhancing the moisture-conditioning function. Furthermore, if the proportion of the moisture-conditioning component 52 is too high, there is a high risk of water separation in the high humidity range, and if the proportion of the moisture-conditioning component 52 is too low, the moisture content of the moisture-conditioning component may be reduced.

[0053] The humidity-conditioning material 50 may be in the form of a powder, particles, or block, or the humidity-conditioning component 52 and the water-absorbing body 51 may be supported on a breathable substrate so that they can be efficiently brought into contact with air.

[0054] The humidity conditioner 50 also includes B-type silica gel, polymeric sorption material, and the like.

[0055] A binder may be used to facilitate adhesion of the humidity conditioner 50 to the surfaces of the first total heat exchanger 21 and the second total heat exchanger 22. The binder may be any material that can be bonded by thermal fusion, and examples of such binders include thermoplastic resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyvinyl acetate, saponified ethylene-vinyl acetate copolymer, polyvinyl alcohol, polyester, polyamide, polyurethane, and ionomer resin, as well as modified products thereof. Preferably, examples of such binders include thermoplastic resins such as polyvinyl acetate, saponified ethylene-vinyl acetate copolymer, polyvinyl alcohol, polyester, polyamide, polyurethane, and ionomer resin, as well as modified products thereof. These may be used alone or in combination of two or more.

[0056] A heater may be provided to release the moisture from the moisture-adsorbed humidity-conditioning material 50 and regenerate the humidity-conditioning material 50 .

[0057] FIG. 4 is a schematic diagram illustrating a modified example of the total heat exchange ventilation apparatus 100 according to the present disclosure. The first and second connecting pipes are omitted from the drawing for convenience. In the modified total heat exchange ventilation apparatus 100′, two or more first blower sections 31 and two or more second blower sections 32 are provided parallel to the air flow direction. Furthermore, the first total heat exchanger 21′ and the second total heat exchanger 22′ of the modified total heat exchange ventilation apparatus 100′ are larger than the first total heat exchanger 21 and the second total heat exchanger 22 of the total heat exchange ventilation apparatus 100 described above. This configuration allows for more heat exchange and faster heat exchange.

[0058] Fig. 5 is a diagram schematically illustrating a total heat exchange ventilation system 1000 according to the present disclosure. As shown in Fig. 5, the total heat exchange ventilation system 1000 according to the present disclosure includes a total heat exchange ventilation device 100 (101, 102, 103), a control unit (not shown), and a space 60. The total heat exchange ventilation device 100 is as described above.

[0059] The total heat exchange ventilator 100 includes several total heat exchange ventilators, for example, a first total heat exchange ventilator 101, a second total heat exchange ventilator 102, and a third total heat exchange ventilator 103, as shown in Fig. 5. A control unit (not shown) may be provided in any of the total heat exchange ventilators 100, or may be a separate unit. The control unit (not shown) may be connected to the total heat exchange ventilator 100 wirelessly using a wireless communication standard such as WiFi, Bluetooth, Z-Wave, Zigbee, or Matter, or may be connected to the total heat exchange ventilator 100 by wire.

[0060] A total heat exchange ventilation device 100 (101, 102, 103) is arranged in the space 60. The space 60 also includes several rooms, for example, a first room 61, a second room 62, and a third room 63.

[0061] In the total heat exchange ventilation system 1000 according to the present disclosure, several total heat exchange ventilation devices 100 (101, 102, 103) each take in and / or exhaust air to the indoors and outdoors.

[0062] Fig. 6 is a diagram showing the first total heat exchange ventilation device 101 and the second total heat exchange ventilation device 102 in Fig. 5, both of which are performing intake. Fig. 7 is a diagram showing the third total heat exchange ventilation device 103 in Fig. 5 performing exhaust.

[0063] 5 and 6 , in the total heat exchange ventilation system 1000 according to the present disclosure, the first total heat exchange ventilation device 101 circulates air through the first total heat exchanger 21 in the first total heat exchange ventilation device 101 to draw air into the first room 61. The second total heat exchange ventilation device 102 circulates air through the first total heat exchanger 21 in the second total heat exchange ventilation device 102 to draw air into the second room 62. Note that the intake and exhaust paths are not limited.

[0064] 5 and 7 , the third total heat exchange ventilation device 103 circulates air through the first total heat exchanger 21 and the second total heat exchanger 22 in the third total heat exchange ventilation device 103, and exhausts the air from the third room 63. Note that the intake and exhaust paths are not limited.

[0065] In this way, the total heat exchange ventilation system 1000 according to the present disclosure enables total heat exchange in the space 60 or all rooms, and enables efficient total heat exchange within the space, when considering not only one room but multiple rooms as the space 60. Furthermore, the total heat exchange ventilation system 1000 according to the present disclosure can adjust the intake and exhaust of all the total heat exchange ventilators 100 so that there is no difference in air pressure between the space 60 (indoors) and the space 60 (outdoors).

[0066] In Figure 5, the first total heat exchange ventilation device 101 and the second total heat exchange ventilation device 102 are shown as intake air, and the third total heat exchange ventilation device 103 is shown as exhaust air, but depending on the total heat exchange amount in the space 60, the first total heat exchange ventilation device 101, the second total heat exchange ventilation device 102, and the third total heat exchange ventilation device 103 can take in air and / or exhaust air.

[0067] For example, the first total heat exchange ventilation device 101 may circulate air through the first total heat exchanger 21 in the first total heat exchange ventilation device 101 to draw air into the first room 61, the second total heat exchange ventilation device 102 may circulate air through the second total heat exchanger 22 in the second total heat exchange ventilation device 102 to exhaust air from the second room 62, the third total heat exchange ventilation device 103 may circulate air through the first total heat exchanger 21 in the third total heat exchange ventilation device 103 to draw air into the third room 63, and the third total heat exchange ventilation device 103 may circulate air through the second total heat exchanger 22 in the third total heat exchange ventilation device 103 to exhaust air from the third room 63.

[0068] 5, the first total heat exchange ventilator 101 may exhaust air by circulating air through the second total heat exchanger 22 in the first total heat exchange ventilator 101, the second total heat exchange ventilator 102 may exhaust air by circulating air through the second total heat exchanger 22 in the second total heat exchange ventilator 102, and the third total heat exchange ventilator 103 may intake air by circulating air through the first total heat exchanger 21 and the second total heat exchanger 22 in the third total heat exchange ventilator 103. Furthermore, these states may be switchable between the states shown in FIGS.

[0069] Furthermore, a control unit (not shown) can be used to link the intake and / or exhaust of the first total heat exchange ventilator 101, the second total heat exchange ventilator 102, and the third total heat exchange ventilator 103 to form a time-division system, thereby enabling efficient total heat exchange in the space 60.

[0070] As described above, the total heat exchange ventilation apparatus 100, 100' and the total heat exchange ventilation system 1000 according to the present disclosure enable efficient total heat exchange.

[0071] Although each embodiment and each example of the present disclosure have been described in detail above, it will be readily apparent to those skilled in the art that many modifications are possible without substantially departing from the novel features and effects of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure.

[0072] For example, a term that is described at least once in the specification or drawings together with a different term having a broader or equivalent meaning can be replaced with that different term anywhere in the specification or drawings. Furthermore, the configurations and operations of the total heat exchange ventilation device and total heat exchange ventilation system are not limited to those described in the embodiments and examples of the present disclosure, and various modifications are possible.

Claims

1. A total heat exchange ventilation device that ventilates through one ventilation opening, comprising: a first circulation path and a second circulation path leading to the indoors and outdoors; a first total heat exchanger that communicates with the first circulation path; a first blowing unit that circulates air through the first total heat exchanger and blows air in a time-division manner that can switch between intake and exhaust from the indoors and outdoors; a second total heat exchanger that communicates with the second circulation path; and a second blowing unit that circulates air through the second total heat exchanger and blows air in a time-division manner that can switch between intake and exhaust from the indoors and outdoors.

2. A total heat exchange ventilation device as described in claim 1, wherein the first blower unit and the second blower unit are linked together, and when one of the first blower unit and the second blower unit draws in air, the other exhausts air.

3. A total heat exchange ventilation system as described in claim 1, characterized in that the first total heat exchanger, the second total heat exchanger, the first blower, and the second blower are installed indoors.

4. A total heat exchange ventilation system according to claim 1, characterized in that the first blower unit and the second blower unit are operated or stopped according to the required amount of ventilation.

5. A total heat exchange ventilation system according to claim 1, characterized in that the first blowing section and the second blowing section both take in or exhaust air.

6. A total heat exchange ventilation device as described in claim 1, characterized in that when the difference between the target set temperature indoors and the actual temperature outdoors, and the difference between the target set humidity indoors and the actual humidity outdoors are small, the first blower unit draws in air and the second blower unit exhausts air.

7. A total heat exchange ventilation system as described in claim 1, characterized in that the first total heat exchanger and the second total heat exchanger have a sensible heat section and a latent heat section having a humidity-regulating material.

8. A total heat exchange ventilation system according to claim 1, characterized in that two or more of the first blowing section and the second blowing section are provided.

9. A total heat exchange ventilation system comprising: the total heat exchange ventilation device according to any one of claims 1 to 8; 10. A total heat exchange ventilation system as described in claim 9, comprising a first total heat exchange ventilation device, a second total heat exchange ventilation device, and a third total heat exchange ventilation device, wherein the first total heat exchange ventilation device circulates air through the first total heat exchanger of the first total heat exchange ventilation device to take in air, the second total heat exchange ventilation device circulates air through the first total heat exchanger of the second total heat exchange ventilation device to take in air, and the third total heat exchange ventilation device circulates air through the first total heat exchanger and the second total heat exchanger of the third total heat exchange ventilation device to exhaust air.

11. A total heat exchange ventilation system as described in claim 9, comprising a first total heat exchange ventilation device, a second total heat exchange ventilation device, and a third total heat exchange ventilation device, wherein the first total heat exchange ventilation device circulates air through the second total heat exchanger in the first total heat exchange ventilation device to exhaust air, the second total heat exchange ventilation device circulates air through the second total heat exchanger in the second total heat exchange ventilation device to exhaust air, and the third total heat exchange ventilation device circulates air through the first total heat exchanger and the second total heat exchanger in the third total heat exchange ventilation device to take in air.

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