JP6489753B2 - Air conditioning system - Google Patents

Description

  The present invention includes a compressor that is driven by an engine and compresses refrigerant, a condenser that condenses the refrigerant compressed by the compressor, an expansion valve that expands the refrigerant condensed by the condenser, and the expansion valve An evaporator that evaporates the refrigerant expanded in step, and a refrigerant circulation path that circulates the refrigerant in the order described in the compressor, the condenser, the expansion valve, and the evaporator, and during the cooling operation, the evaporator An engine-driven heat pump device that supplies air-conditioning air heat-exchanged with the refrigerant flowing through the indoor space and supplies air-conditioning air heat-exchanged with the refrigerant flowing through the condenser to the indoor space during heating operation; An air supply passage for supplying air taken from the outdoor space to the indoor space, an exhaust passage for exhausting air taken from the indoor space to the outdoor space, a first air supply region disposed in the air supply passage, and the exhaust passage Arranged A first rotor unit that dehumidifies and humidifies air passing through the first air supply region and the first exhaust region by rotating a desiccant rotor made of a breathable hygroscopic body between the first exhaust region and the first exhaust region. , Between a second air supply region disposed downstream of the first air supply region in the air supply passage and a second exhaust region disposed upstream of the first exhaust region in the exhaust passage. And a desiccant device having a second rotor portion that rotates and drives a sensible heat rotor made of a gas-permeable body to exchange heat between air passing through the second air supply region and air passing through the second exhaust region. A first heat exchanger for exchanging heat between the engine coolant flowing through the engine coolant circulation path of the engine and the air flowing through the exhaust passage, and the first exhaust region of the exhaust passage and the second heat exchanger. Air conditioning system provided between the exhaust area On.

In recent years, in addition to the generally known gas engine-driven heat pump device (hereinafter abbreviated as GHP) as an air conditioning system, the building standards law requires that 24-hour ventilation be required for general detached houses as well. What is provided with the ventilator which ventilates in the form which heat-exchanges the indoor air of space and the outdoor air of outdoor space is known (refer patent document 1).
In the technique disclosed in Patent Document 1, the ventilation device includes an exhaust passage for exhausting indoor air in the indoor space to the outdoor space, an air supply passage for supplying outdoor air in the outdoor space to the indoor space, and an air supply A first rotor unit that dehumidifies and humidifies the air by rotating a desiccant rotor made of a breathable hygroscopic material between a first air supply region disposed in the passage and a first exhaust region disposed in the exhaust passage. Between the second supply region disposed downstream of the first supply region of the supply passage and the second exhaust region disposed upstream of the first exhaust region of the exhaust passage. A desiccant device is provided that includes a second rotor unit that rotationally drives a sensible heat rotor made of a body.
In the ventilator, in particular, during cooling operation, in order to regenerate the desiccant rotor satisfactorily, a heat exchanger for exchanging heat between the hot water recovered from the exhaust heat of the engine and the air flowing through the exhaust passage, Provided between the first exhaust region and the second exhaust region of the exhaust passage. Thereby, the air heated by the exhaust heat of the engine by the heat exchanger can be guided to the desiccant rotor that passes through the first exhaust region, and is regenerated well.

JP 2002-276996 A

In the technique disclosed in Patent Document 1 described above, for example, when the temperature of hot water introduced to the heat exchanger cannot be sufficiently increased by exhaust heat of the engine when the engine is started, the desiccant in the first exhaust region is used. There was a problem that the rotor could not be regenerated satisfactorily.
Even when the engine is in rated operation, the temperature of the hot water that recovers the exhaust heat of the engine and leads it to the heat exchanger is about 75 ° C., especially in the summer when the humidity is high. The desiccant rotor could not be fully regenerated and there was room for improvement.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a GHP and a desiccant device, even when the gas engine starts up or when the humidity of the outside air is high. An object of the present invention is to provide an air conditioning system that can appropriately regenerate the desiccant rotor and sufficiently reduce the humidity of the air conditioning air supplied to the indoor space via the desiccant device.

An air conditioning system for achieving the above object includes a compressor that is driven by an engine and compresses a refrigerant, a condenser that condenses the refrigerant compressed by the compressor, and expands the refrigerant condensed by the condenser. An expansion valve, an evaporator that evaporates the refrigerant expanded by the expansion valve, and a refrigerant circulation path that circulates the refrigerant in the order described in the compressor, the condenser, the expansion valve, and the evaporator. In the cooling operation, the air-conditioning air heat-exchanged with the refrigerant flowing through the evaporator is supplied to the indoor space, and in the heating operation, the air-conditioning air heat-exchanged with the refrigerant flowing through the condenser is supplied into the indoor space. An engine-driven heat pump device;
An air supply passage for supplying air taken from the outdoor space to the indoor space, an exhaust passage for exhausting air taken from the indoor space to the outdoor space, a first air supply region disposed in the air supply passage, and the exhaust passage A first rotor for dehumidifying and humidifying air passing through the first air supply region and the first exhaust region by rotating a desiccant rotor made of a breathable moisture absorber between the first exhaust region and the first exhaust region. A second air supply region disposed downstream of the first air supply region of the air supply passage, and a second exhaust region disposed upstream of the first exhaust region of the exhaust passage. A desiccant device having a second rotor portion that rotates and drives a sensible heat rotor made of a gas-permeable member between the air and passes through the second air supply region and air that passes through the second exhaust region. And
A first heat exchanger for exchanging heat between the engine coolant flowing through the engine coolant circulation path of the engine and the air flowing through the exhaust passage; and the first exhaust region and the second exhaust region of the exhaust passage. The air conditioning system provided between
A second heat exchanger for exchanging heat between the refrigerant flowing between the compressor and the condenser and the air flowing through the exhaust passage in the refrigerant circulation path during the cooling operation;
The first heat exchanger and the second heat exchanger are described in a flow direction of air flowing through the exhaust passage between the first exhaust region and the second exhaust region of the exhaust passage. In order ,
The higher the dehumidification amount as the set dehumidification set value is, the more the control means for setting the compression work by the compressor larger is provided .

According to the above characteristic configuration, in the exhaust passage, in addition to the first heat exchanger for exchanging heat between the engine coolant and the air flowing through the exhaust passage between the first exhaust region and the second exhaust region, the cooling operation is performed. Since a second heat exchanger that sometimes exchanges heat between the refrigerant flowing between the compressor and the condenser in the refrigerant circuit and the air flowing through the exhaust passage is provided, a desiccant rotor that passes through the first exhaust region is provided. In addition to the first heat exchanger, the second heat exchanger can also be used for heating. As a result, even when the air flowing through the first exhaust region cannot be sufficiently heated by the first heat exchanger at the time of starting the engine, the heat exchange with the refrigerant is performed by the second heat exchanger. The temperature can be raised sufficiently.
In particular, the refrigerant flowing through the second heat exchanger is the refrigerant before being introduced to the condenser after being sufficiently heated after being compressed by the compressor, so depending on the compression work of the compressor, Therefore, in the above characteristic configuration, the second heat exchanger is provided on the downstream side of the first heat exchanger in the first exhaust passage, so that the upstream side of the first heat exchanger is provided. The effect of raising the temperature of the air guided to the first exhaust region can be further exhibited compared to the case of providing. Thereby, for example, even when the humidity of the outside air is high and the desiccant rotor absorbs a lot of moisture, the desiccant rotor can be regenerated well in the first exhaust region, and the dehumidifying performance is improved. it can.
Further, according to the above characteristic configuration, since the control means for controlling the compression work by the compressor based on the set dehumidification set value is provided, for example, the dehumidification set value is set to “dehumidification amount: high”. If the compression work by the compressor is increased and the temperature of the refrigerant coming out of the compressor is raised, the temperature of the air that exchanges heat with the refrigerant is raised in the second heat exchanger, The humidity of the air-conditioning air supplied from the air supply passage can be lowered in a form in which the desiccant rotor passing through one exhaust region is sufficiently regenerated. According to the system, since the humidity can be satisfactorily reduced without excessively increasing the cooling capacity of the evaporator as the GHP indoor unit, in particular, the temperature of the air-conditioning air is not excessively decreased and the humidity is decreased. In case, it becomes effective.
In a normal air conditioner, when the humidity is lowered without lowering the temperature of the air-conditioning air, a reheat dehumidification operation is performed in the indoor unit in which the indoor air is cooled and dehumidified with an evaporator and then heated again. Since the heating is performed by an electric heater or the like, the efficiency is very poor.
According to the above characteristic configuration, the humidity can be lowered without reducing the temperature of the air-conditioning air without performing such heating, compared with the case of performing the reheat dehumidifying operation in a normal air conditioner, Improvement of COP can be expected.

Further features of the air conditioning system of the present invention are as follows:
A third heat exchanger for exchanging heat between the refrigerant flowing between the evaporator and the compressor in the refrigerant circulation path and the air flowing through the air supply passage during the cooling operation; It exists in the point provided in the downstream of the said 2nd supply area | region with the flow direction of the air which flows through a channel | path.

According to the above characteristic configuration, during the cooling operation, the refrigerant that has been heat-exchanged with the air-conditioning air supplied to the indoor space by the evaporator in the refrigerant circulation path and that still retains the cold heat is led to the compressor. Before the air is passed, the third heat exchanger can exchange heat with the air that has passed through the second air supply region in the air supply passage and before being led into the indoor space, and the remaining cold in the refrigeration cycle is desiccant. It can be effectively used in the form of cooling the air-conditioning air on the apparatus side.
Note that even in the technique disclosed in Patent Document 1, in the desiccant device, air passing through the air supply passage between the second air supply region and the indoor space in the air supply passage and the refrigerant circulation path during the cooling operation The second heat exchanger for exchanging heat with the refrigerant after being expanded by the expansion valve is disclosed, but the second heat exchanger is provided as a GHP evaporator. The meaning differs from the “second heat exchanger” of the invention. That is, in the technique disclosed in Patent Document 1, the GHP has a configuration in which there is no evaporator (indoor heat exchanger for an indoor unit) in which the indoor air and the refrigerant perform a heat exchanger. Compared to the invention having the above, it becomes difficult to supply low-temperature air-conditioning air. In this sense, the cooling capacity is lowered.

Further features of the air conditioning system of the present invention are as follows:
The control means controls the compression work by the compressor so that a refrigerant inflow temperature to the second heat exchanger is higher than a maximum temperature of engine cooling water flowing into the first heat exchanger. In the point.

  According to the above characteristic configuration, the control means performs the compression work by the compressor so that the inflow temperature of the refrigerant to the second heat exchanger is higher than the maximum temperature of the engine coolant flowing into the first heat exchanger. In the exhaust passage, in the second heat exchanger provided on the downstream side of the first heat exchanger, the air after passing through the first heat exchanger in the exhaust passage is further heated, The regeneration of the desiccant rotor can be satisfactorily performed in one exhaust region.

Schematic configuration diagram of air conditioning system when performing dehumidifying and cooling operation Schematic configuration diagram of an air conditioning system when performing heating operation PH diagram when performing dehumidifying and cooling operation in the present invention Air diagram when performing dehumidifying and cooling operation in the prior art and the present invention PH diagram when performing dehumidifying and cooling operation in the prior art

  As shown in FIGS. 1 and 2, an air conditioning system 100 according to the present invention includes an engine-driven heat pump device (hereinafter sometimes abbreviated as GHP) and a desiccant device that uses heat generated by the engine-driven heat pump device. The air for air conditioning supplied to the indoor space IS from the desiccant device by appropriately regenerating the desiccant rotor D1c even when the gas engine 22 is started up or when the humidity of the outside air is high. The present invention relates to an apparatus capable of sufficiently reducing the humidity of the SA and also sufficiently reducing the temperature of the air-conditioning air SA supplied from the desiccant device to the indoor space IS.

[Engine-driven heat pump device]
As shown in FIGS. 1 and 2, the air-conditioning system 100 is configured to exchange heat between a compressor 21 that compresses a refrigerant with a shaft output of the gas engine 22, and the refrigerant and air compressed by the compressor 21. The condenser G that condenses the refrigerant in the condenser G, the expansion valve 24 that expands the refrigerant condensed in the condenser G, and the evaporator J that evaporates the refrigerant in the form of heat exchange between the refrigerant expanded in the expansion valve 24 and the air. And a GHP having a refrigerant circulation path C for circulating the refrigerant in the order described.
When the explanation is added, the GHP includes an indoor unit 25 in which an indoor heat exchanger 25a serving as a condenser G or an evaporator J and a blower fan 25b that sends air to the indoor heat exchanger 25a are disposed inside, An outdoor heat exchanger 23a, a blower fan 23b, a compressor 21, a gas engine 22, and a four-way valve 26 for switching the refrigerant circulation direction of the refrigerant circuit C between a cooling operation and a heating operation, and a four-way valve. And an outdoor unit (not shown) that includes therein a first three-way valve V1, a second three-way valve V2, and a control device S that controls them.
Note that switching of the refrigerant circulation state by the first three-way valve V1 and the second three-way valve V2 will be described in detail in an explanation part of the desiccant device described later.

  The gas engine 22 includes an engine jacket 22a that circulates engine coolant through a cylinder and a cylinder head, a radiator that includes a heat exchanger 22c that exchanges heat between the engine coolant and air, and a blower fan 22d, and an engine jacket 22a and a radiator. An engine cooling water circulation path C2 that circulates the engine cooling water between them, and a circulation pump 22b that pumps the engine cooling water to the engine cooling water circulation path C2.

Thereby, the said GHP is the form which the refrigerant | coolant compressed with the compressor 21 heat-exchanges with outdoor air with the outdoor heat exchanger 23a as the condenser G by switching the four-way valve 26 to the state shown in FIG. The refrigerant condensed by the expansion valve 24 and expanded by the expansion valve 24 evaporates in a form in which heat is exchanged with the indoor air in the indoor heat exchanger 25a as the evaporator J, and the indoor air after the heat exchange is relatively low temperature and low humidity. A so-called cooling operation is performed in which the air-conditioning air SA is led to the indoor space IS.
Further, the GHP switches the four-way valve 26 to the state shown in FIG. 2 (the state rotated 90 degrees from the state shown in FIG. 1), so that the refrigerant expanded by the expansion valve 24 exchanges outdoor heat as the evaporator J. The refrigerant evaporated in the form of heat exchange with the air in the outdoor space OS in the condenser 23a and condensed in the form of heat exchange with the air in the indoor space IS in the indoor heat exchanger 25a as the condenser G Then, a so-called heating operation is performed in which the indoor air after the heat exchange is led to the indoor space IS as a relatively high-temperature air-conditioning air SA.

[Desicant device]
The desiccant device is disposed in an air supply passage R1 that supplies air taken from the outdoor space OS to the indoor space IS, an exhaust passage R2 that exhausts air taken from the indoor space IS to the outdoor space OS, and an air supply passage R1. The desiccant rotor D1c made of a breathable hygroscopic material is rotationally driven between the first air supply region D1a and the first exhaust region D1b arranged in the exhaust passage R2, thereby rotating the first air supply region D1a and the first exhaust region D1b. The first rotor part D1 that dehumidifies and humidifies the air passing through the air, the second air supply region D2a disposed on the downstream side of the first air supply region D1a of the air supply passage R1, and the first exhaust in the exhaust passage R2. The air passing through the second air supply region D2a by rotating the sensible heat rotor D2c made of a gas permeable body between the second exhaust region D2b disposed upstream of the region D1b and the second exhaust region D2 A second rotor section D2 of the air heat exchanger that passes through, and a second fan F2 to pump air into the air supply passage R1, and a first fan F1 to pump air to the exhaust passage R2.
The control device S takes into consideration the pressure loss of the supply passage R1 and the exhaust passage R2, and the like so that the air flow rate through the supply passage R1 and the air flow rate through the exhaust passage R2 are substantially the same. The rotational speeds of the first fan F1 and the second fan F2 are controlled.

Here, a description of the configuration of the first rotor part D1 will be added.
The desiccant rotor D1c provided in the first rotor part D1 is driven by a rotation mechanism part M1 such as a motor, the center part of which is fixed to the rotating shaft to be rotated at a predetermined relatively low rotational speed. It is comprised as a disk-shaped or column-shaped member arrange | positioned with the attitude | position crossing the area | regions D1a and D1b arrange | positioned in this. The desiccant rotor D1c is formed in a honeycomb shape having a large number of passages penetrating in the direction along the rotation axis, and air passes through the desiccant rotor D1c in each of the regions D1a and D1b. The desiccant rotor D1c carries a known adsorbent such as zeolite, silica gel, activated carbon, etc., and is a breathable moisture absorber.
The rotor portion D1 having such a desiccant rotor D1c has a relatively low temperature air passing through the first air supply region D1a out of the first air supply region D1a and the first exhaust region D1b. The desiccant rotor D1c is dehumidified with an increase in temperature due to heat dissipation during moisture absorption, and the desiccant rotor D1c is in a state of adsorbing moisture from the air. The portion of the desiccant rotor D1c that has adsorbed the moisture moves to the first exhaust region D1b by the rotational drive.
On the other hand, when relatively high-temperature air passes through the first exhaust region D1b, the air is humidified with a decrease in temperature due to the endothermic action of the desiccant rotor D1c when the moisture is released, whereby the desiccant rotor D1c is adsorbed. It is regenerated by desorbing moisture. The regenerated portion of the desiccant rotor D1c moves to the first air supply region D1a by the rotational drive.
In this way, the rotor part D1 is configured to be able to dehumidify and humidify each of the air passing through the first air supply region D1a and the first exhaust region D1b.

  Since the second rotor part D2 has the same configuration as the first rotor part D1 except that the sensible heat rotor D2c does not carry an adsorbent, its detailed description is omitted here.

The air conditioning system 100 of the present invention is configured as follows in order to heat and cool the air passing through the air supply passage R1 and the exhaust passage R2.
That is, the first heat exchanger EX1 that exchanges heat between the engine coolant that flows through the engine coolant circulation path C2 and the air that flows through the exhaust passage R2, and the cooling operation of the GHP (the circuit state shown in FIG. 1 is present). The second heat exchanger EX2 that exchanges heat between the refrigerant flowing between the compressor 21 and the outdoor heat exchanger 23a as the condenser G and the air flowing through the exhaust passage R2 in the refrigerant circulation path C1. The flow of air flowing through the exhaust passage R2 between the first exhaust region D1b and the second exhaust region D2b of the exhaust passage R2 between the first heat exchanger EX1 and the second heat exchanger EX2 Prepare in the order listed in the direction.
In other words, the first heat exchanger EX1 is configured such that the engine cooling water sent from the engine jacket 22a in the engine cooling water circulation path C2 in the flow direction of the engine cooling water is heated with the first heat exchanger EX1 and the radiator. It arrange | positions so that it may flow through the exchanger 22c in the order of description. As a result, of the engine coolant that circulates through the engine coolant circulation path C2, the first exhaust region D1b of the exhaust passage R2 is made of engine coolant having a relatively high temperature (eg, about 70 ° C.) after exiting the engine jacket 22a. And the air flowing between the second exhaust region D2b can be heated.
Further, in the refrigerant circulation path C1, the refrigerant flowing between the compressor 21 in the refrigerant circulation path C1 and the outdoor heat exchanger 23a as the condenser G is supplied to the refrigerant circulation path C1 in the second heat exchanger EX2. 1 (the circuit state shown in FIG. 1) and the refrigerant flowing through the refrigerant circulation path C1 during the heating operation of the GHP are not guided to the second heat exchanger EX2 side as the compressor 21 and the evaporator J. A second three-way valve V2 that switches between a state (circuit state shown in FIG. 2) in which the outdoor heat exchanger 23a is directly connected is provided. Thereby, during the cooling operation of the GHP, a relatively high temperature refrigerant (for example, about 73 ° C. to 90 ° C.) compressed by the compressor 21 can be passed through the second heat exchanger EX2. The air flowing between the first exhaust region D1b and the second exhaust region D2b can be heated by the second heat exchanger EX2.
Note that the control device S is configured so that the compression work by the compressor 21 can be set variably. In the present invention, for example, when the GHP is rated, the compression work by the compressor 21 is performed. Is increased from the conventional compression work ΔW ′ shown in FIG. 5 to the compression work ΔW of the present invention shown in FIG. Thereby, the temperature of the refrigerant compressed by the compressor 21 is raised from about 73 ° C. to about 90 ° C., and the inflow temperature of the refrigerant to the second heat exchanger EX2 flows into the first heat exchanger EX1. The temperature of the air that passes through the first exhaust region D1b is sufficiently raised by setting it higher than the maximum temperature (for example, 70 ° C.) of the engine cooling water. Thereby, the desiccant rotor D1c of the first rotor part D1 is sufficiently regenerated in the first exhaust region D1b, and the moisture absorption performance in the first supply region D1b is improved.

Furthermore, in the present invention, during the cooling operation of the GHP (in the circuit state shown in FIG. 1), the refrigerant circuit C1 passes between the indoor heat exchanger 25a as the evaporator J and the compressor 21. The third heat exchanger EX3 that exchanges heat between the flowing refrigerant and the air flowing through the supply passage R1 is arranged downstream of the second supply region D2a in the flow direction of the air flowing through the supply passage R1, that is, , Provided immediately before the indoor space IS.
In other words, in the refrigerant circulation path C1, during the cooling operation of the GHP, the refrigerant flowing between the indoor heat exchanger 25a as the evaporator J and the compressor 21 in the refrigerant circulation path C1 is subjected to the third heat exchange. Refrigerant that flows between the indoor heat exchanger 25a as the evaporator J and the compressor 21 in the refrigerant circulation path C1 during the heating operation of the GHP (the circuit state shown in FIG. 1) and the GEX heating operation Is provided with a first three-way valve V1 that switches between a state (circuit state shown in FIG. 2) in which the compressor 21 and the indoor heat exchanger 25a as the condenser G are directly connected without guiding the air to the third heat exchanger EX3 side. It has been. Thus, during the cooling operation of the GHP, as shown between P14 and P15 in FIG. 3, the refrigerant that holds the cold (latent heat + sensible heat) after leaving the evaporator J is transferred to the third heat exchanger EX3. The air conditioning air SA is cooled by the third heat exchanger EX3. In addition, P11-P15 in FIG. 3 has shown the value in P11-P15 in the refrigerant circuit C1 of FIG.

[Dehumidifying and cooling operation]
The air conditioning system 100 according to the present invention is configured to perform a so-called dehumidifying and cooling operation by dehumidifying and cooling the air-conditioning air SA with a desiccant device when the cooling operation is being performed by the GHP.
In the dehumidifying and cooling operation, the control device S switches the four-way valve 26 to the state shown in FIG. 1 on the GHP side, and causes the refrigerant to circulate in the second heat exchanger EX2 and the third heat exchanger EX3. The open / close state of the valve V1 and the second three-way valve V2 is controlled, and on the desiccant device side, the first fan F1 and the second fan F2 are operated at a predetermined rotation speed, and the rotation mechanism part M1 of the first rotor part D1 and The desiccant rotor D1c and the sensible heat rotor D2c are rotationally driven by operating the rotation mechanism part M2 of the second rotor part D2.
FIG. 4 shows an air diagram on the desiccant device side in the dehumidifying and cooling operation. In FIG. 4, the one-dot chain line and the two-dot chain line show the air diagram of the prior art (a configuration in which the second heat exchanger EX2 is not provided), and the solid line and the thick solid line show the air diagram of the present invention. is there.
From FIG. 4, by providing the second heat exchanger EX2 and increasing the temperature of the air passing through the first exhaust region D1b by about 15 ° C. (temperature between P7 and P8), the dehumidification amount H in the present invention. Can be increased by ΔH (about 20%) from the dehumidifying amount H ′ of the prior art, and an improvement in dehumidifying performance is expected.
In addition, P1-P9 in the said air diagram shows the state of the air in P1-P9 in FIG.
The air conditioning system 100 of the present invention employs, for example, a configuration that controls the compression work by the compressor 21 based on a dehumidification setting value from a setting unit (not shown) provided outside during dehumidifying and cooling operation.
For example, when the dehumidification set value is changed and set from “dehumidification amount: low” to “dehumidification amount: high”, the compression work of the compressor 21 is set to be large so that the refrigerant compressed by the compressor 21 is set. In a form in which the temperature is increased, the air after passing through the second heat exchanger EX2 is heated, and the regeneration of the desiccant rotor D1c that passes through the first exhaust region D1b of the first rotor portion is performed more favorably. The dehumidification amount of the air passing through the one air supply region D1a can be improved.

[Heating operation]
In the air conditioning system 100 of the present invention, the heating operation can also be executed by switching the four-way valve 26 to the state shown in FIG.
In the heating operation, the control device S switches the four-way valve 26 to the state shown in FIG. 2 on the GHP side, and the first three-way valve so that the refrigerant does not circulate in the second heat exchanger EX2 and the third heat exchanger EX3. V1 controls the open / close state of the second three-way valve V2, and on the desiccant device side, the first fan F1 and the second fan F2 are operated at a predetermined rotational speed, and the rotation mechanism unit M1 of the first rotor unit D1 is operated. Without stopping the rotation of the desiccant rotor D1c, the rotation mechanism M2 of the second rotor part D2 is operated to rotate the sensible heat rotor D2c.
That is, in the heating operation, the desiccant device functions as a device for exchanging heat between the indoor air RA and the outdoor air OA.
In the heating operation, since the refrigerant is not guided to the second heat exchanger EX2 and the third heat exchanger EX3, P11 to P14 of the refrigerant circulating in the refrigerant circuit C1 (P15 is the same as P14). This state is substantially the same value as P11 ′ to P14 ′ in the conventional PH diagram shown in FIG.

[Another embodiment]
(1) In the above-described embodiment, the configuration in which the first rotor portion D1 and the second rotor portion D2 are provided one by one is exemplified, but a configuration in which a plurality of the first rotor portion D1 and the second rotor portion D2 are separately provided may be employed.

(2) Although the example in which the first fan F1 is provided on the downstream side of the first exhaust region D1b in the exhaust passage R2 is shown, it may be provided anywhere on the exhaust passage R2.
In addition, although the example in which the second fan F2 is provided on the upstream side of the first supply region D1a in the supply passage R1 is shown, it may be provided anywhere on the supply passage R1.

( 3 ) In the above embodiment, a configuration is shown in which the dehumidifying and cooling operation and the heating operation can be switched. However, a configuration in which the four-way valve 26, the first three-way valve V1, and the second three-way valve V2 are not provided is employed for dehumidification. It can be set as the air-conditioning system which performs cooling operation only.

  The air conditioning system of the present invention includes a GHP and a desiccant device, and appropriately reproduces the desiccant rotor even when the gas engine starts up or when the humidity of the outside air is high, via the desiccant device. Therefore, it can be effectively used as an air conditioning system capable of sufficiently reducing the humidity of air conditioning air supplied to the indoor space.

21: Compressor 22: Engine 23a: Outdoor heat exchanger (condenser, evaporator)
25a: Indoor heat exchanger (condenser, evaporator)
26: Four-way valve S: Control device G: Condenser J: Evaporator D1: First rotor part D1a: Supply area D1b: Exhaust area D1c: Desiccant rotor D2: Second rotor part D2a: Supply area D2b: Exhaust area D1c: Sensible heat rotor R1: Air supply passage R2: Exhaust passage EX1: First heat exchanger EX2: Second heat exchanger EX3: Third heat exchanger SA: Air conditioning air RA: Indoor air OA: Outdoor air EA: Exhaust 100: Air conditioning system

Claims (3)

A compressor driven by the engine to compress the refrigerant, a condenser that condenses the refrigerant compressed by the compressor, an expansion valve that expands the refrigerant condensed by the condenser, and an expansion valve that expands the refrigerant An evaporator that evaporates the refrigerant; a refrigerant circulation path that circulates the refrigerant in the order described in the compressor, the condenser, the expansion valve, and the evaporator; and flows through the evaporator during cooling operation. An engine-driven heat pump device that supplies air-conditioning air heat-exchanged with the refrigerant to the indoor space and supplies air-conditioning air heat-exchanged with the refrigerant flowing through the condenser during heating operation to the indoor space;
An air supply passage for supplying air taken from the outdoor space to the indoor space, an exhaust passage for exhausting air taken from the indoor space to the outdoor space, a first air supply region disposed in the air supply passage, and the exhaust passage A first rotor for dehumidifying and humidifying air passing through the first air supply region and the first exhaust region by rotating a desiccant rotor made of a breathable moisture absorber between the first exhaust region and the first exhaust region. A second air supply region disposed downstream of the first air supply region of the air supply passage, and a second exhaust region disposed upstream of the first exhaust region of the exhaust passage. A desiccant device having a second rotor portion that rotates and drives a sensible heat rotor made of a gas-permeable member between the air and passes through the second air supply region and air that passes through the second exhaust region. And
A first heat exchanger for exchanging heat between the engine coolant flowing through the engine coolant circulation path of the engine and the air flowing through the exhaust passage; and the first exhaust region and the second exhaust region of the exhaust passage. In the air conditioning system prepared between
A second heat exchanger for exchanging heat between the refrigerant flowing between the compressor and the condenser and the air flowing through the exhaust passage in the refrigerant circulation path during the cooling operation;
The first heat exchanger and the second heat exchanger are described in a flow direction of air flowing through the exhaust passage between the first exhaust region and the second exhaust region of the exhaust passage. In order ,
The air conditioning system provided with the control means which sets the compression work by the said compressor large, so that the dehumidification amount as a dehumidification setting value set is high .   A third heat exchanger for exchanging heat between the refrigerant flowing between the evaporator and the compressor in the refrigerant circulation path and the air flowing through the air supply passage during the cooling operation; The air conditioning system according to claim 1, wherein the air conditioning system is provided on the downstream side of the second supply region in the flow direction of the air flowing through the passage. The control means controls the compression work by the compressor so that a refrigerant inflow temperature to the second heat exchanger is higher than a maximum temperature of engine cooling water flowing into the first heat exchanger. The air conditioning system according to claim 1 or 2 .

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