Air conditioning units and systems

Abstract

To provide an air conditioning unit and an air conditioning system that are inexpensive, secure energy saving, and further can maintain an indoor temperature / humidity condition comfortably.SOLUTION: An air conditioning unit 1 comprises: a treated air intake unit 23 that takes in outside air having been treated by an air conditioner that adjusts the temperature and humidity of air; and an air supply unit 24 that supplies outside air OA as supply air SA to a target room; a return air intake section 25 that takes in return air RA from the room; and a desiccant unit 12 installed between the treated air intake unit 23 and the air supply unit 24 and downstream of the return air intake unit 25 in an air flow direction, and capable of dehumidifying and regenerating the outside air OA and the return air RA.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an air conditioning unit and an air conditioning system for separating latent and sensible heat, which perform latent heat treatment and sensible heat treatment separately. [Background technology]

[0002] Conventionally, in an air conditioning system for latent heat and sensible heat separation, which performs latent heat treatment and sensible heat treatment separately, a technology has been disclosed that integrates a heat source system and a desiccant element (see Patent Document 1). The technology described in Patent Document 1 heats exhaust air to regenerate the desiccant element, first cools the outside air to dehumidify it to the required absolute humidity, and finally dehumidifies it with the desiccant element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3624910 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology described in Patent Document 1 requires a complex and expensive heat source in order to perform heating and cooling simultaneously.

[0005] In addition, the technology described in Patent Document 1 does not have an outdoor unit, and all the heat taken by cooling and the input energy of the compressor must be discharged to the outside by overheating the exhaust air, so the ratio of intake and exhaust air cannot be changed significantly. For example, the exhaust rate of a commercialized desiccant air conditioner is generally 90% or more. In order to achieve the exhaust rate of 70% to 80% required in a general building considering the exhaust air from the toilet, the outside air must be separately conditioned and supplied to the toilet. This supply air cannot be used as exhaust air, and cannot be heat-exchanged in a total heat exchanger or the like, so it must simply be cooled or heated / humidified. This reduces the efficiency of the entire air conditioning system.

[0006] Furthermore, the technology described in Patent Document 1 is a batch method in which air is supplied to and exhausted from two desiccant elements, and the path is switched to the opposite path when dehumidification is completed. When switching, energy loss occurs due to heat capacity, making the mechanism complicated and expensive.

[0007] In addition, in the technology described in Patent Document 1, all components are integrated, so it is easy to hang the device at the installation location. However, hanging it indoors is limited to a small size.

[0008] An object of the present invention is to provide an air conditioning unit and an air conditioning system that are low-cost, ensure energy conservation, and maintain comfortable temperature and humidity conditions in a room. [Means for solving the problem]

[0009] 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; Between the process air intake and the air supply; and Between the return air intake section and the communication section A desiccant unit that is installed in the dehumidifier and can dehumidify and regenerate the outside air and the return air; Equipped It is characterized by:

[0011] 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 capable of blowing a portion of the return air to the air intake section. It is characterized by:

[0013] The air conditioning unit according to the present invention comprises: A first fan installed in the air supply section; A second fan installed in the exhaust section; Equipped It is characterized by:

[0015] In the air conditioning unit according to the present invention, The desiccant unit has its axis oriented vertically and its rotor oriented horizontally. It is characterized by: Effect of the Invention

[0017] The air conditioning unit and air conditioning system according to the present invention are low-cost, energy-saving, and can maintain comfortable temperature and humidity conditions in a room. [Brief description of the drawings]

[0018] [Figure 1] 1 shows an air conditioning unit according to a first embodiment. [Diagram 2] 1 shows a conceptual diagram of an air conditioning system according to a first embodiment. [Diagram 3] 2 shows a psychrometric chart of an example using the air conditioning unit of the first embodiment. [Figure 4] 1 shows a conceptual diagram of an air conditioning system according to a second embodiment. [Diagram 5] 13 shows a conceptual diagram of an air conditioning system according to a third embodiment. [Figure 6] 13 shows a conceptual diagram of an air conditioning system according to a fourth embodiment. [Figure 7] 13 shows a conceptual diagram of an air conditioning system according to a fifth embodiment. [Figure 8] 13 shows either the total heat exchanger or the desiccant section of another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of an 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.

[0020] Fig. 1 shows an air conditioning unit 1 of the first embodiment. Fig. 2 shows a conceptual diagram of an air conditioning system 100 of the first embodiment. In Fig. 1, the inside of the air conditioning unit 1 is shown in a see-through top view.

[0021] The air conditioning unit 1 of the first embodiment comprises a case 2, a total heat exchanger 11 installed in the case 2 and exchanging heat between outdoor air OA and return air RA, and a desiccant section 12 installed in the case 2 and having a dehumidification function.

[0022] Case 2 comprises an air intake section 21 that takes in outside air OA, an air blower section 22 that blows air that has been treated with latent heat 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 into the room, a return air intake section 25 that takes in return air RA from inside the room, a communication section 26 connected to the return air intake section 25, and an exhaust section 27 connected to the communication section 26 that exhausts the return air RA.

[0023] 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 process air intake section 23 and the air supply 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.

[0024] The outside air OA passes through the air intake section 21, 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 air supply section 24, and is supplied to the target room as supply air SA.

[0025] The return air RA passes through the desiccant section 12 from the return air intake section 25, and is sent to the communication section 26. The air that has passed through the communication section 26 passes through the total heat exchanger 11, and is discharged from the exhaust section 27 to the outside as exhaust air EA.

[0026] The total heat exchanger 11 of 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.

[0027] 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 is discharged outdoors as exhaust air EA.

[0028] When the outside air OA passes through the air intake zone of the total heat exchanger 11, it receives the total heat stored in the total heat exchanger 11 and becomes warm and humid air.

[0029] In summer, the cool, low-humidity 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 becomes warm and humid air, and is discharged outdoors as exhaust air EA.

[0030] The outside air OA passes through the air supply zone of the total heat exchanger 11, whereby the air is subjected to total heat exchange, becoming pre-cooled and dehumidified air, and is then sent to the air conditioner 3.

[0031] In this way, the air conditioning unit 1 of the first embodiment is low-cost and can maintain comfortable temperature and humidity conditions in the room while ensuring energy conservation. Also, since the air conditioning unit 1 of the first embodiment has a structure in which the air conditioner 3, the first fan 13, and the second fan 14 are separate, the dimensions and weight of each device can be reduced and the unit can be easily installed in a predetermined location.

[0032] In addition, the first fan 13 may be installed in at least one of the air intake section 21 and the air supply section 24, and the second fan 14 may be installed in at least one of the return air intake section 25 and the exhaust section 27.

[0033] 3 shows an example psychrometric diagram using the air conditioning unit 1 of the first embodiment. The solid line shows the state diagram of the normal temperature regeneration method of the first embodiment, and the dashed line shows the state diagram of the cooling dehumidification method.

[0034] 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) Air conditioning unit 1 dehumidifies the air treated by air conditioner 3 in desiccant section 12. Thereafter, the dehumidified air is blown by first blower 13 from air supply section 24 to the living room. (5) The air conditioning unit 1 takes in the return air RA from the living room to 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 by the second blower 14 from the exhaust section 27 as exhaust air EA.

[0035] Compared with the conventional cooling dehumidification system, the air conditioning unit 1 of this embodiment is of the normal temperature regeneration system, and therefore has the following cost advantages.

[0036] 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 can be switched between cooling and heating, which is cheaper than the heat source that simultaneously extracts cooling and heating used in general desiccant systems.

[0037] Furthermore, 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.

[0038] Furthermore, the air conditioning unit 1 of this embodiment does not require a coil for regenerative heating, which reduces costs. Also, the air conditioning unit 1 of this embodiment can use a general-purpose blower such as a fan, which reduces costs and can accommodate a wide range of external static pressures / air volumes.

[0039] The air conditioning unit 1 of this embodiment provides the following effects in terms of energy conservation in addition to cost.

[0040] The difference between the temperature at the inlet (3) of the desiccant section 12 of the air conditioning unit 1 of this embodiment and the outlet temperature of the conventional cooling and dehumidifying system 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 that of the conventional cooling and dehumidifying system. In addition, the outlet temperature of the air conditioning unit 1 of this embodiment, which is a room temperature regeneration system, is higher, so the efficiency of the refrigerator is also improved.

[0041] Generally, to prevent overcooling during the intermediate seasons, etc., 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 dehumidifying method, the outlet temperature needs to be raised by 5.5°C when reheating 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 dehumidifying method.

[0042] Furthermore, if the outdoor temperature and humidity conditions are close 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.

[0043] 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. [Table 1]

[0044] When the outdoor air enthalpy is higher than the indoor air enthalpy, the air conditioning system 100 uses the first desiccant mode. The first desiccant mode operates as shown in the state diagram drawn by a solid line in the psychrometric chart shown in Fig. 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 a desiccant temperature and an appropriate set air volume according to the desiccant used in the desiccant section 12.

[0045] When the outdoor air enthalpy is lower than the indoor air enthalpy, the air conditioning system 100 uses the second desiccant mode. In the second desiccant mode, only the desiccant unit 12 is operated. The blowing temperature of the air conditioner 3 is set to a desiccant temperature according to the desiccant used in the desiccant unit 12. The air volume of the air conditioner 3 is set to the maximum air volume.

[0046] 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 a total heat exchange temperature and an 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.

[0047] 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 the maximum air volume.

[0048] In this way, the air conditioning system 100 of the first embodiment can operate in response to various situations.

[0049] FIG. 4 shows a conceptual diagram of an air conditioning system 100 according to the second embodiment.

[0050] The air conditioning system 100 of the second embodiment is provided with a storage section 28 for storing an air conditioner 3, 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 sends it to the process air intake section 23.

[0051] In the air conditioning system 100 of the second embodiment, the first blower 13 is installed in the air supply section 24, and the second blower 14 is 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.

[0052] In this way, the air conditioning unit 1 of the second embodiment can accommodate the general-purpose air conditioner 3, the first fan 13, the second fan 14, etc. in the case 2, and can be handled as an integrated unit with the general-purpose products. In addition, the first fan 13 and the second fan 14 can be installed either integrated with the air conditioning unit 1 or separately, improving the freedom of design.

[0053] FIG. 5 shows a conceptual diagram of an air conditioning system 100 according to the third embodiment.

[0054] The air conditioning system 100 of the third embodiment shows an example using an air conditioner 3 with total heat exchanger and an air conditioning unit 1. The air conditioner 3 with total heat exchanger has a total heat exchanger 311 that exchanges heat between outside air OA and 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 exchanger may be a general-purpose one.

[0055] The air conditioning unit 1 has an air intake section 21 that takes in outside air OA to be blown to an air conditioner 3 with total heat exchanger, a treated air intake section 23 that takes in treated air 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 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.

[0056] When the outside air OA is taken into the air conditioner 3 with total heat exchanger, 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 and the like 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 by the first blower 13 from the air supply section 24 to the room as supply air SA.

[0057] 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.

[0058] 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 directly exhausted 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.

[0059] 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 the desiccant section 12, without the need to install a total heat exchanger 11.

[0060] FIG. 6 shows a conceptual diagram of an air conditioning system 100 according to the fourth embodiment.

[0061] The air conditioning system 100 of the fourth embodiment 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.

[0062] 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 treated by the air conditioner 3, an air supply section 24 that supplies the outside air OA to the living room as supply air SA, a return air intake section 25 that takes in return air RA from the living 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. Moreover, 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.

[0063] The outside air OA passes through the air conditioner 3, 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 by the first blower 13 from the air supply section 24 to the room as supply air SA.

[0064] 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.

[0065] 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.

[0066] In this way, the air conditioning unit 1 of the fourth embodiment can be used in a general-purpose air conditioner 3 with a low-cost and simple structure having only the desiccant section 12, without using the total heat exchanger 11.

[0067] FIG. 7 shows a conceptual diagram of an air conditioning system 100 according to the fifth embodiment.

[0068] The air conditioning system 100 of the fifth embodiment uses an air conditioner 3 and an air conditioning unit 1, and shows an example in which a total heat exchanger is not used and return air is reused. The air conditioner 3 may be a general-purpose one.

[0069] 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 a 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 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 The fifth embodiment has an exhaust section 27 which discharges the air as exhaust air, a storage section 28 which stores the air conditioner 3 upstream of the process air intake section 23 in the air flow direction, a desiccant section 12 which is installed between the process air intake section 23 and the air supply section 24 and between the return air intake section 25 and the exhaust section 27 downstream of the return air intake section 25 in the air flow direction and which can dehumidify and regenerate the outside air OA and the return air RA, and a bypass damper 29 which adjusts the return air RA to be mixed with the outside air OA. The air intake section 21 of the air conditioning unit 1 in the fifth embodiment also functions as the blower section 22 in the first and second embodiments.

[0070] The outside air OA passes through the air conditioner 3, 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 by the first blower 13 from the air supply section 24 to the room as supply air SA.

[0071] 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, a 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 discharged from the exhaust section 27 as exhaust air EA by the second blower 14.

[0072] It should be noted that the storage section 28 may not be provided and the air conditioner 3 may be provided separately from the air conditioning unit 1. Also, as shown by the imaginary line in Fig. 7, the second blower 14 may be installed in the ventilation intake section 25. In this case, since it is not necessary to provide the exhaust section 27, the case 2 can be made smaller.

[0073] In this way, the air conditioning unit 1 of the fifth embodiment can be used in a low-cost and simple structure having only a desiccant section 12, without using a total heat exchanger 11 compared to a general-purpose air conditioner 3, and by further reusing the return air RA.

[0074] Fig. 8 shows a desiccant section 12 of another embodiment. Fig. 8(a) is a diagram of the desiccant section 12 of the other embodiment seen from the side, and Fig. 8(b) is a diagram of the desiccant section 12 of the other embodiment seen from above.

[0075] The desiccant section 12 of the embodiment shown in FIG. 8 has a rotor installed horizontally. The rotor has an axis in the vertical direction, and the intake surface and exhaust surface are in the horizontal direction. Note that there may be some error in the vertical and horizontal directions. Air passes from above to below, or from below to above. Note that the total heat exchanger 11 may also use a rotor and be installed as shown in FIG. 6.

[0076] In this way, the air conditioning unit 1 of the embodiment shown in FIG. 8 can be installed effectively according to the space, such as a space with little height.

[0077] The air conditioning unit 1 of this embodiment includes a treated air intake section 23 that takes in outdoor air treated by an air conditioner that adjusts the temperature and humidity of air, an air supply section 24 that supplies the outdoor 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 outdoor 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 that the dimensions and weight of each device can be reduced and it can be easily installed in a predetermined position.

[0078] 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.

[0079] 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 part of the return air RA to the air intake section 21. Therefore, by utilizing the return air RA, further energy conservation can be ensured.

[0080] The air conditioning unit 1 of this embodiment includes an air blower 22 that blows the 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.

[0081] The air conditioning unit 1 of this embodiment includes a first fan 13 installed in the air intake section 24 and a second fan 14 installed in the exhaust section 27. Therefore, the general-purpose first fan 13 and second fan 14 can be stored in the case 2 and can be handled as an integrated unit with the general-purpose products.

[0082] The air conditioning unit 1 of this embodiment includes a storage section 28 for storing the air conditioner 3, located 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 handled as an integrated unit with the general-purpose product.

[0083] In the air conditioning unit 1 of this embodiment, the desiccant section 12 has its axis oriented vertically and its rotor horizontally installed. Therefore, the air conditioning unit 1 of this embodiment can be effectively installed in a space such as a low-height space according to the space.

[0084] 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.

[0085] It should be noted that the present invention is not limited to the embodiments, and that although many specific details are included for illustrative purposes in the description of the embodiments, those skilled in the art may make various variations and modifications to these details. [Explanation of symbols]

[0086] 1...Air conditioner 11...Total heat exchanger 12…Desiccant section 13...1st blower 14…Second blower 15…Direct expansion coil 2. Case 21...Air intake 22...Blower section 23...Processing air intake section 24...Air supply section 25…Return air intake 26…Communication part 27…Exhaust section 28…Storage section 29...Bypass damper 3…Air conditioner 100…Air conditioning system

Claims

1. An air conditioning unit for use with a general-purpose air conditioner that does not house an air conditioner that adjusts the temperature and humidity of air, and has a separate structure, 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; Equipped An air conditioning unit characterized by:

2. The communication section is capable of blowing a portion of the return air to the air intake section.

2. An air conditioning unit as claimed in claim 1.

3. A first fan installed in the air supply section; A second fan installed in the exhaust section; Equipped 3. An air conditioning unit according to claim 1 or 2.

4. The desiccant section has its axis oriented vertically and its rotor oriented horizontally. An air conditioning unit according to any one of the preceding claims.

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