JP7601671B2 - Air conditioning units and systems - Google Patents

Description

The present invention relates to an air conditioning unit and air conditioning system for separating latent and sensible heat, which performs latent heat treatment and sensible heat treatment separately.

Conventionally, in an air conditioning system for separating latent and sensible heat, which performs latent heat treatment and sensible heat treatment separately, a technology has been disclosed that integrates a heat source system with a desiccant element (see Patent Document 1). The technology described in Patent Document 1 heats exhaust air to regenerate the desiccant element, first cools it to dehumidify the outside air to the required absolute humidity, and finally dehumidifies it with the desiccant element.

Patent No. 3624910

However, the technology described in Patent Document 1 requires a complex and expensive heat source to simultaneously heat and cool.

In addition, the technology described in Patent Document 1 does not have an outdoor unit, and all of the heat taken by cooling and the input energy of the compressor must be discharged to the outside through superheated exhaust air, meaning that the ratio of intake and exhaust air volumes cannot be changed significantly. For example, the exhaust rate of commercial desiccant air conditioners is generally 90% or more. In order to achieve the exhaust rate of 70% to 80%, which is required in a typical building that takes toilet exhaust into consideration, outside air must be conditioned separately and supplied to the toilet. This supply air cannot be used as exhaust air, and heat exchange using a total heat exchanger or the like is not possible, so it must simply be cooled or heated/humidified. This results in a decrease in the efficiency of the entire air conditioning system.

Furthermore, the technology described in Patent Document 1 is a batch system in which air is supplied to and exhausted from two desiccant elements, and the system switches to the opposite path when dehumidification is complete. When switching, energy loss occurs due to heat capacity, making the mechanism complex and expensive.

In addition, in the technology described in Patent Document 1, all components are integrated, making it easy to hang the device at the installation location. However, hanging it indoors is limited to small devices.

The present invention aims to provide an air conditioning unit and air conditioning system that is low-cost, ensures energy savings, and maintains comfortable temperature and humidity conditions in a room.

The air conditioning unit according to the present invention comprises:
An air conditioning unit that does not house an air conditioner that adjusts the temperature and humidity of air, but is used for a general-purpose air conditioner that is structured separately,
An air intake section for taking in outside air;
A blower unit that blows the outside air taken in from the air intake unit to the air conditioner;
A treated air intake section that takes in outside air treated by the air conditioner;
an air supply unit that supplies the outside air as supply air to a target room;
A return air intake section that takes in return air from the room;
An exhaust unit that discharges the return air as exhaust air;
A communication portion connecting the return air intake portion and the exhaust portion;
A total heat exchanger is installed between the air intake section and the blower section and between the communication section and the exhaust section, and is capable of total heat exchange between the outside air and the return air;
A desiccant section that is installed between the treatment air intake section and the air supply section and between the return air intake section and the communication section and can dehumidify and regenerate the outside air and the return air;
The present invention is characterized by comprising:

The air conditioning unit according to the present invention comprises:
A communication portion connecting the return air intake portion and the exhaust portion;
Further equipped with
The communication section is characterized in that it is possible to blow a portion of the return air to the air intake section.

The air conditioning unit according to the present invention comprises:
A first blower installed in the air supply section;
A second fan installed in the exhaust section;
The present invention is characterized by comprising:

In the air conditioning unit according to the present invention,
The desiccant unit is characterized in that its axis is vertical and its rotor is horizontally installed.

The air conditioning unit and air conditioning system of the present invention are low-cost, energy-saving, and can maintain comfortable temperature and humidity conditions in a room.

1 shows an air conditioning unit according to a first embodiment; 1 shows a conceptual diagram of an air conditioning system according to a first embodiment. 2 shows an example psychrometric chart using the air conditioning unit of the first embodiment. 1 shows a conceptual diagram of an air conditioning system according to a second embodiment. 13 shows a conceptual diagram of an air conditioning system according to a third embodiment. 13 shows a conceptual diagram of an air conditioning system according to a fourth embodiment. A conceptual diagram of an air conditioning system according to a fifth embodiment is shown. 13 shows either the total heat exchanger or the desiccant section of another embodiment.

Below, an embodiment of the air conditioning unit 1 according to the present invention will be described with reference to the drawings. The air conditioning unit 1 of this embodiment can be used as an air conditioning system 100 in combination with a general-purpose air conditioner 3.

Figure 1 shows an air conditioning unit 1 of the first embodiment. Figure 2 shows a conceptual diagram of an air conditioning system 100 of the first embodiment. Note that in Figure 1, the interior of the air conditioning unit 1 is shown through the top surface.

The air conditioning unit 1 of the first embodiment includes a case 2, a total heat exchanger 11 installed in the case 2 and exchanging heat between the outside air OA and the return air RA, and a desiccant section 12 installed in the case 2 and having a dehumidifying function.

Case 2 is equipped with an air intake section 21 that takes in outside air OA, an air blower section 22 that blows air that has been subjected to latent heat treatment to the air conditioner 3, a treated air intake section 23 that takes in air from the air conditioner 3, an air supply section 24 that supplies supply air SA to the room, a return air intake section 25 that takes in return air RA from inside the room, a communication section 26 that connects to the return air intake section 25, and an exhaust section 27 that connects to the communication section 26 and exhausts the return air RA.

The total heat exchanger 11 is installed between the air intake section 21 and the blower section 22, and between the communication section 26 and the exhaust section 27. The desiccant section 12 is installed between the treated air intake section 23 and the supply air section 24, and between the return air intake section 25, which is downstream of the return air intake section in the air flow direction, and the communication section 26. The desiccant section 12 may use a room temperature regeneration method in which the regeneration air is regenerated simply by exhausting it without heating it.

The outside air OA passes through the air intake section 21 and the total heat exchanger 11, and is sent from the blower section 22 to the air conditioner 3. The air returning from the air conditioner 3 passes through the desiccant section 12 from the treated air intake section 23, is sent to the supply section 24, and is supplied to the target room as supply air SA.

The return air RA passes from the return air intake section 25 through the desiccant section 12 and is sent to the communication section 26. The air that passes through the communication section 26 passes through the total heat exchanger 11 and is discharged to the outside from the exhaust section 27 as exhaust air EA.

The total heat exchanger 11 in this embodiment may be a total heat exchange rotor that rotates around an axis, or may be a stationary total heat exchanger. The total heat exchanger 11 exchanges heat between the outside air OA and the return air RA.

For example, in winter, the warm and humid return air RA passes through the exhaust zone of the total heat exchanger 11, and the total heat (sensible heat and latent heat) contained in the return air RA is stored in the rotor. The return air RA is cooled and dehumidified and discharged outdoors as exhaust air EA.

When the outside air OA passes through the intake zone of the total heat exchanger 11, it receives all the heat stored in the total heat exchanger 11 and becomes warm and humid air.

In the summer, the cold, low-humidity return air RA passes through the exhaust zone of the total heat exchanger 11, and all the heat (sensible heat and latent heat) contained in the return air RA is stored in the rotor. The return air RA becomes warm, humid air and is discharged outdoors as exhaust air EA.

The outside air OA passes through the air supply zone of the total heat exchanger 11, undergoing total heat exchange, becoming pre-cooled and dehumidified air, which is then sent to the air conditioner 3.

In this way, the air conditioning unit 1 of the first embodiment is low-cost, yet is capable of maintaining comfortable temperature and humidity conditions in the room while ensuring energy conservation. Furthermore, because the air conditioning unit 1 of the first embodiment has a structure in which the air conditioner 3, the first blower 13, and the second blower 14 are separate, the dimensions and weight of each device can be reduced, and the unit can be easily installed in a specified location.

The first blower 13 may be installed in at least one of the air intake section 21 and the air supply section 24, and the second blower 14 may be installed in at least one of the return air intake section 25 and the exhaust section 27.

Figure 3 shows an example of a psychrometric diagram using the air conditioning unit 1 of the first embodiment. The solid line is a state diagram of the room temperature regeneration method of the first embodiment, and the dashed line is a state diagram of the cooling dehumidification method.

In the air conditioning system 100 using the air conditioning unit 1 of the first embodiment, the following process is carried out.
(1) The air conditioning unit 1 takes in outside air OA into the air intake section 21.
(2) The outside air OA undergoes total heat exchange in the total heat exchanger 11. Thereafter, the air that has undergone total heat exchange is sent from the blower section 22 to the air conditioner 3.
(3) The air conditioning unit 1 takes in air that has been treated by the air conditioner 3 through the treated air intake section 23 .
(4) In the air conditioning unit 1, the air processed by the air conditioner 3 is dehumidified in the desiccant section 12. The dehumidified air is then sent by the first fan 13 from the air supply section 24 to the living room.
(5) The air conditioning unit 1 takes in the return air RA from the living room into the return air intake section 25.
(6) The return air RA is humidified in the desiccant section 12 and is sent to the communication section 26.
(7) The return air RA undergoes total heat exchange in the total heat exchanger 11. Thereafter, the air that has undergone total heat exchange is discharged as exhaust air EA from the exhaust section 27 by the second blower 14.

Compared to conventional cooling and dehumidification methods, the air conditioning unit 1 of this embodiment uses a room temperature regeneration method, which provides the following cost benefits:

The air conditioning unit 1 of this embodiment does not need to heat the exhaust gas for regeneration, and can use a heat source that switches between cooling and heating, which is less expensive than the heat source that simultaneously extracts cooling and heating, which is used in general desiccant systems.

In addition, the air conditioning unit 1 of this embodiment can use a general-purpose outdoor air processing package air conditioner or the like as the heat source air conditioner 3, so there is no need to develop a new heat source and inexpensive existing products can be used.

In addition, the air conditioning unit 1 of this embodiment does not require a coil for regenerative heating, which reduces costs. In addition, the air conditioning unit 1 of this embodiment can use general-purpose blowers such as fans, which reduces costs and can accommodate a wide range of external static pressures/air volumes.

In addition to cost savings, the air conditioning unit 1 of this embodiment also provides the following energy-saving benefits:

The difference between the inlet (3) temperature of the desiccant section 12 of the air conditioning unit 1 of this embodiment and the outlet temperature of the conventional cooling and dehumidification method is 2.23°C. When this difference is converted into load, the air conditioning unit 1 of this embodiment has a load 16.3% lower than the conventional cooling and dehumidification method. In addition, the outlet temperature is higher in the air conditioning unit 1 of this embodiment, which is a room temperature regeneration method, so the efficiency of the refrigerator is also improved.

In general, to prevent overcooling during intermediate periods, an outlet temperature of at least 13 to 16°C is preferable. The outlet temperature of the air conditioning unit 1 of this embodiment is 17.2°C. With a conventional cooling and dehumidification method, the outlet temperature needs to be raised by 5.5°C to reheat to the same temperature. When this temperature is converted into a load by adding the difference in cooling load, the air conditioning unit 1 of this embodiment is 27.8% lower than the conventional cooling and dehumidification method.

Furthermore, if the outdoor temperature and humidity conditions are closer to room temperature or are lower than room temperature, the overall load will decrease. However, since the amount of dehumidification by the desiccant section 12 remains the same, the relative load difference will increase. For example, at an outdoor temperature of 23°C and a relative humidity of 71%, the load of the air conditioning unit 1 of this embodiment is 24% lower without reheating and 38.4% lower with reheating than the conventional cooling and dehumidification method.

Table 1 shows the operating state for each mode of the air conditioning system 100 of this embodiment. The air conditioning system 100 of this embodiment can set a plurality of modes as shown in Table 1, for example.

When the outside air enthalpy is higher than the indoor air, the air conditioning system 100 uses the first desiccant mode. The first desiccant mode operates as shown in the state diagram drawn with a solid line in the psychrometric chart shown in Figure 3. In the first desiccant mode, the total heat exchanger 11 and the desiccant section 12 are operated. The blowing temperature and air volume of the air conditioner 3 are set to the desiccant temperature and the appropriate set air volume according to the desiccant used in the desiccant section 12.

When the outside air enthalpy is lower than the indoor air, the air conditioning system 100 uses the second desiccant mode. In the second desiccant mode, only the desiccant section 12 is operated. The air conditioner 3 blows air at a desiccant temperature that corresponds to the desiccant used in the desiccant section 12. The air volume of the air conditioner 3 is set to the maximum air volume.

During heating, the air conditioning system 100 uses the total heat exchange mode. In the total heat exchange mode, only the total heat exchanger 11 is operated. The blowing temperature and air volume of the air conditioner 3 are set to the total heat exchange temperature and the appropriate set air volume according to the material used in the total heat exchanger. The set air volume in the total heat exchange mode may be the same as the set air volume in the first desiccant mode.

When the humidity is low, the air conditioning system 100 uses the outdoor air cooling mode. In the outdoor air cooling mode, the total heat exchanger 11 and the desiccant section 12 do not operate. The air conditioner 3 only blows air at maximum volume.

In this way, the air conditioning system 100 of the first embodiment can operate in a variety of situations.

Figure 4 shows a conceptual diagram of the air conditioning system 100 of the second embodiment.

The air conditioning system 100 of the second embodiment has a storage section 28 for storing the air conditioner 3, located upstream of the process air intake section 23 in the air flow direction of the case 2 of the air conditioning unit 1. The storage section 28 is provided between the blower section 22 and the process air intake section 23. The air conditioner 3 processes the outside air OA blown from the blower section 22 and blows it to the process air intake section 23.

In the second embodiment, the air conditioning system 100 has the first blower 13 installed in the air supply section 24 and the second blower 14 installed in the exhaust section 27. The first blower 13 and the second blower 14 may be separate from the air conditioning unit 1. Alternatively, one of them may be provided within the air conditioning unit 1 and the other may be provided separately. Furthermore, the first blower 13 may be provided in the air intake section 21 and the second blower 14 may be provided in the return air intake section 25.

In this way, the air conditioning unit 1 of the second embodiment can store a general-purpose air conditioner 3, a first blower 13, a second blower 14, etc., in the case 2, and can be handled as an integrated unit with the general-purpose products. In addition, the first blower 13 and the second blower 14 can be installed either integrated with the air conditioning unit 1 or separately, improving the freedom of design.

Figure 5 shows a conceptual diagram of the air conditioning system 100 of the third embodiment.

The air conditioning system 100 of the third embodiment shows an example using an air conditioner 3 with total heat exchange and an air conditioning unit 1. The air conditioner 3 with total heat exchange has a total heat exchanger 311 that exchanges heat between the outside air OA and the return air RA, and a direct expansion coil 315 that adjusts the temperature and humidity of the air. The air conditioner 3 with total heat exchange may be a general-purpose one.

The air conditioning unit 1 has an air intake section 21 that takes in outside air OA to be blown into an air conditioner 3 with total heat exchanger, a treated air intake section 23 that takes in treated air that has been treated by the air conditioner 3, an air supply section 24 that supplies the outside air OA to the room as supply air SA, a return air intake section 25 that takes in return air RA from the room, a communication section 26 that blows the return air RA that has passed through the desiccant section 12 to the air conditioner 3, an exhaust section 27 that exhausts the treated air that has been treated by the air conditioner 3 as exhaust air, a storage section 28 that stores the air conditioner 3 upstream of the treated air intake section 23 in the air flow direction, and a desiccant section 12 that is installed between the treated air intake section 23 and the air supply section 24 and between the return air intake section 25 and the communication section 26 and is capable of dehumidifying and regenerating the outside air OA and the return air RA. The air intake section 21 of the air conditioning unit 1 of the third embodiment also functions as the blower section 22 of the first and second embodiments.

When the outside air OA is taken into the air conditioner 3 with total heat exchange, it passes through the total heat exchanger 311, then passes through the direct expansion coil 315, and is discharged from the air conditioner 3. Next, the outside air OA passes through pipes, etc., and is taken into the treated air intake section 23 of the air conditioning unit 1. Next, the outside air OA passes through the desiccant section 12, and is supplied to the room from the air supply section 24 by the first blower 13 as supply air SA.

When the return air RA is taken in by the return air intake section 25, it passes through the desiccant section 12 and is discharged to the communication section 26. Next, the return air RA passes through pipes, etc., is taken into the air conditioner with total heat exchanger 3, passes through the total heat exchanger 11, and is discharged from the exhaust section 27 as exhaust air EA by the second blower 14.

As shown by the phantom lines in FIG. 5, the second blower 14 may be installed in the ventilation intake section 25. In this case, the air intake section 21 and the exhaust section 27 do not need to be provided, so the case 2 can be made smaller. In this case, the outside air OA is taken in directly into the air conditioner 3, and the return air RA is exhausted directly from the air conditioner 3. Also, the storage section 28 may not be provided, and the air conditioner 3 may be provided separately from the air conditioning unit 1.

In this way, the air conditioning unit 1 of the third embodiment can be used in a general-purpose air conditioner 3 with total heat exchanger with a simple structure having only a desiccant section 12, without installing a total heat exchanger 11.

Figure 6 shows a conceptual diagram of the air conditioning system 100 of the fourth embodiment.

The fourth embodiment of the air conditioning system 100 uses an air conditioner 3 and an air conditioning unit 1, and does not use a total heat exchanger. The air conditioner 3 may be a general-purpose one.

The air conditioning unit 1 has an air intake section 21 that takes in outside air OA to be blown to the air conditioner 3, a treated air intake section 23 that takes in treated air that has been treated by the air conditioner 3, an air supply section 24 that supplies the outside air OA to the room as supply air SA, a return air intake section 25 that takes in return air RA from the room, an exhaust section 27 that discharges the return air RA that has passed through the desiccant section 12 as exhaust air, a storage section 28 that stores the air conditioner 3 upstream of the treated air intake section 23 in the air flow direction, and a desiccant section 12 that is installed between the treated air intake section 23 and the air supply section 24 and downstream of the return air intake section 25 in the air flow direction between the return air intake section 25 and the exhaust section 27, and is capable of dehumidifying and regenerating the outside air OA and the return air RA. The air intake section 21 of the air conditioning unit 1 of the fourth embodiment also functions as the blower section 22 of the first and second embodiments. The exhaust section 27 of the air conditioning unit 1 of the fourth embodiment also functions as the communication section 26 of the first to third embodiments.

The outside air OA passes through the air conditioner 3, passes through pipes, etc., and is taken in by the treated air intake section 23 of the air conditioning unit 1. Next, the outside air OA passes through the desiccant section 12 and is supplied to the room from the air supply section 24 by the first blower 13 as supply air SA.

When the return air RA is taken in by the return air intake section 25, it passes through the desiccant section 12 and is exhausted from the exhaust section 27 as exhaust air EA by the second blower 14.

As shown by the phantom lines in FIG. 6, the second blower 14 may be installed in the ventilation intake section 25. In this case, the air intake section 21 and the exhaust section 27 do not need to be provided, so the case 2 can be made smaller. The outside air OA is taken in directly into the air conditioner 3, and the return air RA is discharged directly from the desiccant section 12. Also, the storage section 28 may not be provided, and the air conditioner 3 may be provided separately from the air conditioning unit 1.

In this way, the air conditioning unit 1 of the fourth embodiment can be used with a general-purpose air conditioner 3 with a low-cost and simple structure that has only a desiccant section 12, without using a total heat exchanger 11.

Figure 7 shows a conceptual diagram of the air conditioning system 100 of the fifth embodiment.

The fifth embodiment of the air conditioning system 100 uses an air conditioner 3 and an air conditioning unit 1, and shows an example of reusing return air without using a total heat exchanger. The air conditioner 3 may be a general-purpose one.

The air conditioning unit 1 includes an air intake section 21 that takes in outside air OA and return air RA to be sent to the air conditioner 3, a treated air intake section 23 that takes in treated air that has been treated by the air conditioner 3, an air supply section 24 that supplies the outside air OA to the living space as supply air SA, a return air intake section 25 that takes in return air RA from the living space, a communication section 26 that passes the return air RA that has passed through the desiccant section 12 to the first intake section 21 or the exhaust section 27, and a communication section 27 that passes the return air RA to the first intake section 21 or the exhaust section 27. The fifth embodiment has an exhaust section 27 that exhausts the air as exhaust, a storage section 28 that stores the air conditioner 3 upstream of the treated air intake section 23 in the air flow direction, a desiccant section 12 that can dehumidify and regenerate the outside air OA and the return air RA, and a bypass damper 29 that adjusts the return air RA to be mixed with the outside air OA. The air intake section 21 of the air conditioning unit 1 of the fifth embodiment also functions as the blower section 22 of the first and second embodiments.

The outside air OA passes through the air conditioner 3, passes through pipes, etc., and is taken in by the treated air intake section 23 of the air conditioning unit 1. Next, the outside air OA passes through the desiccant section 12 and is supplied to the room from the air supply section 24 by the first blower 13 as supply air SA.

When the return air RA is taken in by the return air intake section 25, it passes through the desiccant section 12 and is blown to the communication section 26. Then, part of the return air RA passes through the bypass damper 29 and is blown to the air intake section 21, and the remainder is exhausted from the exhaust section 27 as exhaust air EA by the second blower 14.

The storage section 28 may not be provided, and the air conditioner 3 may be provided separately from the air conditioning unit 1. As shown by the phantom lines in FIG. 7, the second blower 14 may be installed in the ventilation intake section 25. In this case, the exhaust section 27 does not need to be provided, and the case 2 can be made smaller.

In this way, the air conditioning unit 1 of the fifth embodiment can be used with a general-purpose air conditioner 3 without using a total heat exchanger 11, and by further reusing the return air RA, with a low-cost and simple structure having only a desiccant section 12.

Figure 8 shows a desiccant section 12 of another embodiment. Figure 8(a) is a side view of the desiccant section 12 of another embodiment, and Figure 8(b) is a top view of the desiccant section 12 of another embodiment.

The desiccant section 12 of the embodiment shown in Figure 8 has a rotor installed horizontally. The rotor has a vertical axis and the intake and exhaust surfaces are horizontal. Note that some error is allowed in the vertical and horizontal directions. Air passes from top to bottom, or from bottom to top. Note that the total heat exchanger 11 also uses a rotor and may be installed as shown in Figure 6.

In this way, the air conditioning unit 1 of the embodiment shown in Figure 8 can be effectively installed to suit the space, such as a low-height space.

The air conditioning unit 1 of this embodiment includes a treated air intake section 23 that takes in outside air that has been treated by an air conditioner that adjusts the temperature and humidity of the air, an air supply section 24 that supplies the outside air OA to a target room as supply air SA, a return air intake section 25 that takes in return air RA from the room, and a desiccant section 12 that is installed between the treated air intake section 23 and the air supply section 24 and downstream of the return air intake section 25 in the air flow direction and can dehumidify and regenerate the outside air OA and the return air RA. Therefore, the air conditioning unit 1 of this embodiment is low-priced, yet can maintain comfortable temperature and humidity conditions in the room while ensuring energy conservation. In addition, the air conditioning unit 1 of this embodiment has a structure in which the air conditioner 3, the first blower 13, and the second blower 14 are separate, so the dimensions and weight of each device can be reduced and it can be easily installed in a specified position.

The air conditioning unit 1 of this embodiment further includes an air intake section 21 that takes in outside air OA and blows it to the air conditioner 3, and an exhaust section 27 that exhausts return air RA as exhaust air EA. Therefore, the air conditioning unit 1 of this embodiment can accurately take in and exhaust air.

The air conditioning unit 1 of this embodiment further includes a communication section 26 that connects the return air intake section 25 and the exhaust section 27, and the communication section 26 is capable of blowing a portion of the return air RA to the air intake section 21. Therefore, by utilizing the return air RA, further energy savings can be ensured.

The air conditioning unit 1 of this embodiment includes an air blower 22 that blows outside air OA taken in from an air intake 21 to an air conditioner 3 that adjusts the temperature and humidity of the air, a communication section 26 that connects a return air intake 25 and an exhaust section 27, and a total heat exchanger 11 that is installed between the air intake 21 and the air blower 22 and between the communication section 26 and the exhaust section 27 and is capable of total heat exchange between the outside air OA and the return air RA, and a desiccant section 12 is installed between the treated air intake 23 and the supply air section 24, and between the return air intake 25 and the communication section 26. Therefore, the temperature and humidity conditions in the living room can be maintained more comfortably.

The air conditioning unit 1 of this embodiment includes a first blower 13 installed in the air supply section 24 and a second blower 14 installed in the exhaust section 27. Therefore, the general-purpose first blower 13 and second blower 14 can be stored in the case 2 and can be treated as an integrated unit with the general-purpose products.

The air conditioning unit 1 of this embodiment has a storage section 28 for storing the air conditioner 3, upstream of the process air intake section in the air flow direction. Therefore, a general-purpose air conditioner 3 can be stored in the case 2, and can be treated as an integrated unit with the general-purpose product.

In the air conditioning unit 1 of this embodiment, the desiccant section 12 has its axis oriented vertically and the rotor is installed horizontally. Therefore, the air conditioning unit 1 of this embodiment can be installed effectively to suit the space, such as a space with no height.

The air conditioning system 100 of this embodiment includes the air conditioning unit 1 and an air conditioner 3. Therefore, the air conditioning system 100 of this embodiment can use a general-purpose air conditioner 3, and can maintain comfortable temperature and humidity conditions in the room while ensuring energy conservation at a low cost.

Note that the present invention is not limited to this embodiment. In other words, in describing the embodiment, many specific details are included for illustrative purposes, but a person skilled in the art may make various variations and modifications to these details.

Reference Signs List 1...Air conditioner 11...Total heat exchanger 12...Desiccant section 13...First blower 14...Second blower 15...Direct expansion coil 2...Case 21...Air intake section 22...Blower section 23...Treated air intake section 24...Air supply section 25...Return air intake section 26...Communication section 27...Exhaust section 28...Storage section 29...Bypass damper 3...Air conditioner 100...Air conditioning system

Claims (4)

An air conditioning unit that does not house an air conditioner that adjusts the temperature and humidity of air, but is used for a general-purpose air conditioner that is structured separately,
An air intake section for taking in outside air;
A blower unit that blows the outside air taken in from the air intake unit to the air conditioner;
A treated air intake section that takes in outside air treated by the air conditioner;
an air supply unit that supplies the outside air as supply air to a target room;
A return air intake section that takes in return air from the room;
An exhaust unit that discharges the return air as exhaust air;
A communication portion connecting the return air intake portion and the exhaust portion;
A total heat exchanger is installed between the air intake section and the blower section and between the communication section and the exhaust section, and is capable of total heat exchange between the outside air and the return air;
A desiccant section that is installed between the treatment air intake section and the air supply section and between the return air intake section and the communication section and can dehumidify and regenerate the outside air and the return air;
An air conditioning unit comprising: The air conditioning unit according to claim 1 , wherein the communication portion is capable of blowing a part of the return air to the air intake portion. A first blower installed in the air supply section;
A second fan installed in the exhaust section;
3. An air conditioning unit according to claim 1 or 2 , characterized in that it comprises 4. The air conditioning unit according to claim 1, wherein the desiccant section has an axis oriented vertically and a rotor disposed horizontally.

Images