JP5523666B2 - Dehumidification air conditioning system and method using rotary dehumidifier, and control device and control method for dehumidification air conditioning system - Google Patents

Description

  The present invention relates to a dehumidifying air conditioning system and method using a rotary dehumidifier, and a control device and control method for the dehumidifying air conditioning system.

  In a rotary dehumidifier, it is generally known that the efficiency of energy utilization can be improved by using the exhaust heat of the refrigeration means provided as a heat source for dehumidification (for example, Patent Document 1).

However, in patent document 1, the control method for supplying the heat which a rotary dehumidifier requires to a rotary dehumidifier is not clarified, and a rotary dehumidifier can fully exhibit the performance. Whether it is unknown. In particular, when the cooling method of the refrigerant of the refrigeration means is a water cooling type, the refrigerant pressure of the refrigeration means is generally low, so that sufficient condensation exhaust heat necessary for dehumidification of the rotary dehumidifier can be obtained from the refrigeration means. There was a problem that it was difficult to be.
JP 2004-150733 A

  An object of the present invention is to allow a rotary dehumidifier to sufficiently exhibit its performance when the exhaust heat of the refrigeration means is used as a heat source for dehumidification of the rotary dehumidifier.

The present invention provides a dehumidifying air conditioning system comprising: a rotary dehumidifier; a primary refrigerant circuit that cools the refrigeration means with a primary refrigerant; and a control unit that controls the flow rate of the secondary refrigerant that receives heat from the primary refrigerant. Because
The rotary dehumidifier is
A rotary dehumidifying rotor capable of absorbing and releasing moisture;
A treatment area in which the dehumidification rotor absorbs moisture;
A regeneration region that is a region from which the dehumidifying rotor releases moisture;
A regeneration fan that takes in outdoor air, passes the regeneration area, and discharges it to the outdoors;
A processing fan that takes in indoor air, passes the processing region, and blows air into the room;
Have
The primary refrigerant circuit is
A compressor for compressing the primary refrigerant;
A dehumidifier system condenser that is disposed on the windward side of the dehumidification rotor in the regeneration region, and supplies heat from the primary refrigerant to the air in the regeneration region;
A cooling system condenser that supplies warm heat from the primary refrigerant that has supplied warm heat to the secondary refrigerant in the dehumidifier system condenser;
Cooling means for supplying the secondary refrigerant to the cooling system condenser;
A pressure gauge that measures the pressure of the primary refrigerant after passing through the compressor and before passing through the refrigeration means;
Have
The secondary refrigerant is a liquid;
The cooling means supplies the secondary refrigerant cooled in the secondary refrigerant cooler for cooling the secondary refrigerant to the cooling system condenser, and receives the heat from the primary refrigerant in the cooling system condenser. A secondary cooling circuit for supplying a secondary refrigerant to the secondary refrigerant cooler;
The control unit controls the flow rate of the secondary refrigerant that the cooling means supplies to the cooling system condenser based on the pressure value measured by the pressure gauge ,
The secondary cooling circuit includes a flow rate control valve that allows the flow rate of the secondary refrigerant to be adjusted, and includes a switching valve provided in a path that bypasses the path that includes the flow rate control valve,
The controller is
If the pressure value measured by the pressure gauge exceeds the first predetermined value, increase the opening of the flow control valve,
If the pressure value measured by the pressure gauge is below a second predetermined value that is less than or equal to the first predetermined value, the opening of the flow control valve is reduced,
In the dehumidifying air conditioning system, the opening degree of the flow control valve is controlled so that a pressure value measured by the pressure gauge is within a predetermined range .

In the dehumidifying air conditioning system of the present invention , the control unit opens the on-off valve when a pressure value measured by the pressure gauge falls below a third predetermined value that is smaller than the second predetermined value. It is good also as controlling.

Further, in the dehumidifying air-conditioning system of the present invention, the control section, when the compressor is not running, it may be controlled to the on-off valve open.

The present invention also includes a rotary dehumidification rotor capable of absorbing and releasing moisture, a treatment area where the dehumidification rotor absorbs moisture, and a regeneration area where the dehumidification rotor releases moisture. A rotary dehumidifier having a regeneration fan that takes in outdoor air and passes it through the regeneration area and discharges it outdoors; and a processing fan that takes in indoor air and passes it through the treatment area and blows it into the room; ,
A compressor that compresses the primary refrigerant; a dehumidifier system condenser that is disposed on the windward side of the dehumidifying rotor in the regeneration region and that supplies warm heat from the primary refrigerant to the air in the regeneration region; and the dehumidifier After passing through the compressor, a cooling system condenser that supplies the secondary refrigerant to the secondary refrigerant, a cooling system that supplies the secondary refrigerant to the cooling system condenser, and a cooling system condenser that supplies the secondary refrigerant to the secondary refrigerant A pressure gauge for measuring the pressure of the primary refrigerant before passing through the refrigeration means, and a primary refrigerant circuit for cooling the refrigeration means with the primary refrigerant,
With
The secondary refrigerant is a liquid;
The cooling means supplies the secondary refrigerant cooled in the secondary refrigerant cooler for cooling the secondary refrigerant to the cooling system condenser, and receives the heat from the primary refrigerant in the cooling system condenser. An apparatus for controlling a dehumidifying air conditioning system which is a secondary cooling circuit for supplying a secondary refrigerant to the secondary refrigerant cooler,
A controller that controls the flow rate of the secondary refrigerant that the cooling means supplies to the cooling system condenser based on the pressure value measured by the pressure gauge ;
The secondary cooling circuit includes a flow rate control valve that allows the flow rate of the secondary refrigerant to be adjusted, and includes an opening / closing valve in a path that bypasses the path including the flow rate control valve,
The controller is
If the pressure value measured by the pressure gauge exceeds the first predetermined value, increase the opening of the flow control valve,
If the pressure value measured by the pressure gauge is below a second predetermined value that is less than or equal to the first predetermined value, the opening of the flow control valve is reduced,
The dehumidification air-conditioning system control device controls the opening degree of the flow control valve so that the pressure value measured by the pressure gauge is within a predetermined range .

  In the present invention, when the exhaust heat of the refrigeration means is used as a heat source for dehumidification of the rotary dehumidifier, the rotary dehumidifier can sufficiently exhibit its performance.

  FIG. 1 is an overall configuration diagram of a dehumidifying air conditioning system 1 according to an embodiment of the present invention. As shown in the figure, the dehumidifying air conditioning system 1 of this embodiment includes a primary refrigerant circuit 10, a rotary dehumidifier 20, a secondary cooling circuit 30, a control unit 40, and a pressure gauge 13 as main components. .

  The primary refrigerant circuit 10 includes a refrigeration unit 11, a compressor 12, a regeneration condenser 26, and a cooling system condenser 16. In the primary refrigerant circuit 10, a primary refrigerant (for example, chlorofluorocarbon, ammonia, hydrocarbon, carbon dioxide, etc.) circulates.

  The freezing means 11 is an open-type freezing means such as an open showcase that displays and sells products such as foods in a supermarket or the like while cooling. The freezing means 11 discharges the cold heat obtained by evaporating the refrigerant with an evaporator (not shown) and cools the commodity such as food. The cooling temperature is appropriately set according to the type of product.

  The compressor 12 compresses the primary refrigerant at a compression rate necessary for maintaining the refrigeration unit 11 at a set temperature.

  As will be described later, the regeneration condenser 26 is disposed in the regeneration region 25 of the rotary dehumidifier 20 and releases the heat of the refrigerant compressed by the compressor 12 to the outside air introduced into the regeneration region 25.

  The cooling system condenser 16 discharges the heat of the primary refrigerant radiated by the regeneration condenser 26 to the secondary refrigerant of the secondary cooling circuit 30 described later. For example, water is used as the secondary refrigerant.

  The pressure gauge 13 measures the pressure of the primary refrigerant after passing through the compressor 12 of the primary refrigerant circuit 10 and before passing through the refrigeration means 11 (hereinafter, the pressure value indicated by the pressure gauge 13 is referred to as “measurement pressure”). P ”).

  As described above, the primary refrigerant flowing through the primary refrigerant circuit 10 releases the cold heat by the refrigeration means 11, is then compressed by the compressor 12, dissipates heat by the regeneration condenser 26 and the cooling system condenser 16, and again Return to the refrigeration means 11.

  The rotary dehumidifier 20 includes two areas, a processing area 22 and a regeneration area 25. A processing fan 24 is installed corresponding to the processing area 22. A regeneration fan 27 is installed corresponding to the regeneration region 25, and the regeneration condenser 26 described above is disposed in the regeneration region 25 closer to the regeneration fan 27 than a dehumidifying rotor 21 described later.

  The processing fan 24 takes in indoor air and blows it into the processing region 22, and the air that has passed through the processing region 22 is sent into the room again. On the other hand, the regeneration fan 27 takes in outdoor air and blows it into the regeneration region 25, and the air that has passed through the regeneration region 25 is sent out to the outdoors again.

  The regeneration condenser 26 receives the heat from the primary refrigerant whose temperature has been increased by being compressed by the compressor 12, and supplies the heat to the outdoor air blown by the regeneration fan 27 in the regeneration region 25.

  The dehumidifying rotor 21 dehumidifies the air by adsorbing moisture contained in the indoor air blown by the processing fan 24 in the processing region 22. When adsorbing moisture, an exothermic reaction is caused and the indoor air blown by the processing fan 24 is warmed using this heat. In addition, the dehumidifying rotor 21 rotates to move the portion that has adsorbed moisture in the processing region 22 to the regeneration region 25. In the regeneration region 25, the dehumidifying rotor 21 is blown by the regeneration fan 27 and releases the adsorbed moisture by the air that has been warmed by receiving warm heat from the regeneration condenser 26 and has a low relative humidity. Then, due to the rotation of the dehumidifying rotor 21, the portion where moisture is released in the regeneration region 25 and the moisture adsorption capacity is regenerated moves to the treatment region 22 again, and the room air is dehumidified as described above. Thus, by using the heat of the regeneration condenser 26 for regeneration of the dehumidifying rotor 21, energy saving in the processing region 22 can be achieved.

  The moisture adsorbent used in the dehumidifying rotor 21 is not particularly limited, but is chemically stable and safe, such as titanium / silica gel, lithium chloride, molecular sieves, zeolite, and a superabsorbent wet polymer, and has a high moisture removal capability. And what can discharge | release and reproduce | regenerate the water | moisture content adsorbed by heating is preferable.

  The secondary cooling circuit 30 shares the cooling system condenser 16 with the primary refrigerant circuit 10, and further includes a secondary refrigerant cooler 31, a secondary refrigerant pump 32, a flow rate control valve 33, and an on-off valve 34.

  As described above, in the cooling system condenser 16, the heat is released from the primary refrigerant in the primary refrigerant circuit 10, and the secondary refrigerant in the secondary cooling circuit 30 is warmed by this heat. That is, in the cooling system condenser 16, the refrigerant in the primary refrigerant circuit 10 is cooled by heat exchange between the secondary refrigerant in the secondary cooling circuit 30 and the refrigerant in the primary refrigerant circuit 10.

The secondary refrigerant cooler 31 cools the secondary refrigerant warmed in the cooling system condenser 16.
The secondary refrigerant pump 32 circulates the secondary refrigerant in the secondary cooling circuit 30 in the secondary cooling circuit 30.

  The flow control valve 33 adjusts the flow rate of the secondary refrigerant in the secondary cooling circuit 30 according to the opening degree. As the flow rate of the secondary refrigerant increases, the cooling efficiency of the primary refrigerant in the cooling system condenser 16 increases. The control of the flow control valve 33 is performed by the control unit 40 as will be described later.

  The on-off valve 34 is closed during normal operation, but when the refrigeration means 11 is not in operation or when the pressure value indicated by the pressure gauge 13 falls below a predetermined value, the control of the control unit 40 will be described later. Open by.

  The control unit 40 acquires information on whether or not the refrigeration unit 11 is operating (hereinafter referred to as “operation information”) and the measurement pressure P, and the opening degree of the flow control valve 33 based on the measurement pressure P and the operation information. And the opening and closing of the on-off valve 34 is controlled. FIG. 2 is a diagram illustrating a flow of processing executed by the control unit 40 to control the flow rate control valve 33 and the on-off valve 34.

  First, the control unit 40 determines whether or not the refrigeration means 11 is in an operating state (S202). If the refrigeration means 11 is not in operation (S202: NO), the on-off valve 34 is opened (S204), and the process returns to S202. . On the other hand, if the refrigeration means 11 is operating (S202: YES), the measured pressure P corresponds to a predetermined pressure value Pa (a “third predetermined value” in the claims). It is determined whether or not it is lower than a low pressure value that cannot be shown during operation (S206). If the measured pressure P is lower than the pressure value Pa (S206: YES), the on-off valve 34 is opened (S208), S202. Return to. On the other hand, when the measured pressure P is larger than the pressure value Pa (S206: NO), the process proceeds to S210.

  Further, the control unit 40 determines whether or not the measured pressure P is greater than a predetermined pressure value Pb (corresponding to “first predetermined value” in the claims, Pb> Pa) (S210). When the measured pressure P is greater than the pressure value Pb (S210: YES), the opening degree of the flow control valve 33 is increased (S212), and the process returns to S202. On the other hand, when the measured pressure P is equal to or lower than the pressure value Pb (S210: NO), the measured pressure P corresponds to a predetermined pressure value Pc (“second predetermined value” in the claims, Pb> It is determined whether or not Pc> Pa) or less (S214). When the measured pressure P is equal to or lower than the pressure value Pc (S214: YES), the opening degree of the flow control valve 33 is decreased (S216), and the process returns to S202. On the other hand, when the measured pressure P is larger than the pressure value Pc (S214: NO), the process returns to S202.

  As described above, the control unit 40 adjusts the flow rate of the secondary refrigerant in the secondary cooling circuit 30 so that when the refrigeration unit 11 is normally operated, the pressure in the primary refrigerant circuit 10 is set to the pressure value Pb and the pressure. A range between the values Pc can be maintained. When the operation of the refrigeration unit 11 is stopped in S202, or when the pressure in the primary refrigerant circuit 10 is equal to or lower than the pressure value Pa in S206, the above control is performed by opening the on-off valve 34 in S204 and S208. Do not do. This is because, when the refrigeration means 11 is not in operation, the flow rate control valve 33 is excessively throttled by opening the on-off valve 34 to avoid overloading the secondary refrigerant pump 32 and the primary refrigerant. This is to prevent the compressor 12 from being stopped due to overload by excessively restricting the flow control valve 33 when a failure occurs in which the pressure gauge 13 cannot be detected correctly.

  According to the above control, the control unit 40 controls the flow rate of the secondary refrigerant in the secondary cooling circuit 30 by adjusting the opening degree of the flow rate control valve 33, and sets the pressure value of the primary refrigerant in the primary refrigerant circuit 10. By maintaining the pressure within the predetermined range, sufficient heat of condensation can be obtained in the regeneration condenser 26. Thereby, the air in the reproduction | regeneration area | region 25 is fully warmed, and the water | moisture-content adsorption capacity of the dehumidification rotor 21 can fully be reproduced | regenerated with this warmed air.

  That is, according to the dehumidifying air conditioning system 1, the on-off valve 34 is provided in parallel with the flow control valve 33, and when the refrigeration means 11 is not operating, the on-off valve 34 is opened so that the flow control valve 33 is excessively throttled and the secondary control valve 34 is opened. It is possible to avoid applying an excessive load to the refrigerant pump 32. Further, when a failure occurs in which the pressure of the primary refrigerant cannot be correctly detected by the pressure gauge 13, it is possible to avoid preventing the compressor 12 from being stopped due to overload by excessively restricting the flow control valve 33.

  Next, in order to confirm the effect of the control of the secondary cooling circuit 30 performed by the control unit 40 of the dehumidifying air conditioning system 1, the control unit 40 did not perform the case of this embodiment in which the secondary cooling circuit 30 is controlled. The dehumidification situation in the rotary dehumidifier 20 for the case (hereinafter referred to as “comparative example”) will be described in comparison.

  FIG. 3 is an air diagram showing the temperature and humidity of the air passing through the treatment area 22 and the regeneration area 25 of the rotary dehumidifier 20 in the present embodiment and the comparative example. In the air diagram of FIG. 3, the horizontal axis is dry bulb temperature (° C.), the vertical axis is absolute humidity (kg water / kg air), and the relative humidity (%) corresponds to 10% increments of 10% to 90%. It is shown by a group of curves rising to the right.

  The state A2 indicates the state of the air after passing through the regeneration condenser 26 in the regeneration region 25 and before passing through the dehumidifying rotor 21 in the present embodiment. That is, in the present embodiment, the control unit 40 controls the secondary cooling circuit 30 so that the pressure in the primary refrigerant circuit 10 can be maintained within a predetermined range. Then, generally, if the pressure in the primary refrigerant circuit 10 increases, the condensation heat obtained in the regeneration condenser 26 increases, so that the regeneration condenser 26 is sufficient for the air blown by the regeneration fan 27 in the regeneration region 25. By supplying warm heat, the air rises to 46 ° C. and the relative humidity drops to 16%. Due to this warm and dry air, the dehumidifying rotor 21 effectively releases moisture.

  Further, since the processing fan 24 takes in indoor air, the state A1 has the same temperature and humidity as the indoor air. However, when the processing fan 24 passes through the processing area 22, moisture is released to the dehumidifying rotor 21 that has released moisture in the regeneration area. And the dehumidification rotor 21 is heated by the reaction heat when absorbing moisture, so that the temperature rises to 33 ° C. at the outlet of the processing region 22 as shown in state A3, and the absolute humidity is 0.0049 kg water / kg air. In addition, the relative humidity decreases to 16%. The air thus warmed and dried is returned to the room and is blown into a passage in front of the showcase, for example.

  On the other hand, the state B2 indicates the state of air after passing through the regeneration condenser 26 in the regeneration region 25 and before passing through the dehumidifying rotor 21 in the comparative example. In the case of the comparative example, the amount of heat supplied from the primary refrigerant to the secondary refrigerant in the cooling system condenser 16 is greater than in this embodiment, and the pressure in the primary refrigerant circuit 10 is in this embodiment. Compared to lower. Therefore, the heat supplied by the regeneration condenser 26 in the regeneration region 25 is smaller than that in the present embodiment, the temperature in the state B2 is 30 ° C., and the relative humidity is 38%, which is compared with the present embodiment. The temperature is low and the relative humidity is high. The dehumidification rotor 21 releases moisture by the warm and dry air.

  Thus, in the case of the present embodiment, the temperature in the regeneration region 25 of the dehumidifying rotor 21 is higher and the relative humidity is lower than in the comparative example. As a result, in the present embodiment, the state A1 at the entrance of the processing region 22 is changed to a state A3 at the outlet of the processing region 22 where the temperature is higher and the relative humidity and the absolute humidity are lower than in the state B3 in the comparative example. Transition can be made.

  FIG. 4 is an overall configuration diagram of the dehumidifying air conditioning system 2 according to the second embodiment of the present invention. The dehumidifying air-conditioning system 2 of this embodiment is different in that the primary refrigerant in the cooling system condenser 16 is air blown by a cooling fan 36 described later, but the other configuration is This is the same as the dehumidifying air conditioning system 1 shown in FIG.

  The cooling fan 36 supplies air to the cooling system condenser 16, and the cooling system condenser 16 receives heat from the primary refrigerant compressed by the compressor 12 and supplies heat to the air supplied by the cooling fan 36.

  The control unit 40 acquires a pressure value from the pressure gauge 13 and controls the air volume of the cooling fan 36 based on the pressure value. FIG. 7 is a diagram illustrating a control flow of the cooling fan 36 performed by the control unit 40. Based on the figure, control of the control part 40 is demonstrated.

  The control unit 40 acquires operation information indicating whether the refrigeration unit 11 is operating and the measured pressure P, and controls the air volume of the cooling fan 36 based on the measured pressure P and the operation information. FIG. 5 is a diagram illustrating a flow of processing executed by the control unit 40 to control the cooling fan 36.

  First, the control unit 40 determines whether or not the refrigeration unit 11 is operating (S502). If the refrigeration unit 11 is not operating (S502: NO), the cooling fan 36 is stopped (S504), and the process proceeds to S502. Return. On the other hand, if the refrigeration means 11 is operating (S502: YES), it is determined whether or not the measured pressure P is equal to or lower than a predetermined pressure value Pa (S506). (S506: YES), the cooling fan 36 is operated for a certain period (S508), and the process returns to S502. On the other hand, if the measured pressure P is greater than the pressure value Pa (S506: NO), the process proceeds to S510.

  Further, the control unit 40 determines whether or not the measured pressure P is greater than a predetermined pressure value Pb (Pb> Pa) (S510). If the measured pressure P is greater than the pressure value Pb (S510: YES). Then, the air volume of the cooling fan 36 is increased (S512), and the process returns to S502. On the other hand, when the measured pressure P is equal to or lower than the pressure value Pb (S510: NO), it is determined whether or not the measured pressure P is equal to or lower than a predetermined pressure value Pc (Pb> Pc> Pa) (S514). When the measured pressure P is equal to or lower than the pressure value Pc (S514: YES), the air volume of the cooling fan 36 is decreased (S516), and the process returns to S502. On the other hand, when the measured pressure P is larger than the pressure value Pc (S514: NO), the process returns to S502.

  As described above, the control unit 40 adjusts the flow rate of the secondary refrigerant in the secondary cooling circuit 30 so that when the refrigeration unit 11 is normally operated, the pressure in the primary refrigerant circuit 10 is set to the pressure value Pb and the pressure. A range between the values Pc can be maintained. If the operation of the refrigeration unit 11 is stopped in S502, the cooling fan 36 is stopped. If the pressure in the primary refrigerant circuit 10 is extremely reduced in S506, the cooling fan 36 is It is assumed that the operation is constant and the above control is not performed. This is to avoid the use of unnecessary energy by operating the cooling fan 36 when the refrigeration means 11 is not operating, and a failure in which the pressure of the primary refrigerant cannot be detected correctly by the pressure gauge 13. This is to prevent the air volume of the cooling fan 36 from being reduced and the compressor 12 from being stopped due to overload.

  As described above, also in the dehumidifying air conditioning system 2 of the second embodiment, when the exhaust heat of the refrigeration unit 11 is used as a heat source for dehumidifying the rotary dehumidifier 20, the rotary dehumidifier 20 has sufficient performance. Can demonstrate. That is, the control unit 40 controls the air volume of the cooling fan 36 and maintains the pressure value of the refrigerant in the primary refrigerant circuit 10 within a predetermined range, so that sufficient condensation heat can be obtained in the regeneration condenser 26. . Thereby, the air in the reproduction | regeneration area | region 25 is fully warmed, and the water | moisture-content adsorption capacity of the dehumidification rotor 21 can fully be reproduced | regenerated with this warmed air.

  In addition, the description of the above embodiment is for facilitating understanding of the present invention, and does not limit the present invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and that the present invention includes equivalents thereof.

1 is an overall configuration diagram of a dehumidifying air conditioning system 1 according to an embodiment of the present invention. It is a figure which shows the control flow of the flow control valve 33 and the on-off valve 34 of the control part 40. FIG. It is an air line figure which shows the temperature and humidity of the air which pass the process area | region 22 and the reproduction | regeneration area | region 25 of the rotary dehumidifier 20 in the case of this embodiment and a comparative example. It is a whole block diagram of the dehumidification air-conditioning system 2 which is another embodiment of this invention. It is a figure which shows the control flow of the cooling fan 36 which the control part 40 performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Dehumidification air-conditioning system 10 Refrigerating circuit 11 Refrigeration means 12 Compressor 13 Pressure gauge 16 Cooling system condenser 20 Rotary dehumidifier 21 Dehumidification rotor 22 Processing area 24 Processing fan 25 Reproduction area 26 Dehumidifier system condenser 27 Regeneration fan 30 2 Secondary cooling circuit 31 Secondary refrigerant cooler 32 Secondary refrigerant pump 33 Flow rate control valve 34 On-off valve 36 Cooling fan 40 Control unit

Claims (9)

A dehumidifying air conditioning system comprising: a rotary dehumidifier; a primary refrigerant circuit that cools the refrigeration means with a primary refrigerant; and a control unit that controls a flow rate of a secondary refrigerant that receives heat from the primary refrigerant,
The rotary dehumidifier is
A rotary dehumidifying rotor capable of absorbing and releasing moisture;
A treatment area in which the dehumidification rotor absorbs moisture;
A regeneration region that is a region from which the dehumidifying rotor releases moisture;
A regeneration fan that takes in outdoor air, passes the regeneration area, and discharges it to the outdoors;
A processing fan that takes in indoor air, passes the processing region, and blows air into the room;
Have
The primary refrigerant circuit is
A compressor for compressing the primary refrigerant;
A dehumidifier system condenser that is disposed on the windward side of the dehumidification rotor in the regeneration region, and supplies heat from the primary refrigerant to the air in the regeneration region;
A cooling system condenser that supplies warm heat from the primary refrigerant that has supplied warm heat to the secondary refrigerant in the dehumidifier system condenser;
Cooling means for supplying the secondary refrigerant to the cooling system condenser;
A pressure gauge that measures the pressure of the primary refrigerant after passing through the compressor and before passing through the refrigeration means;
Have
The secondary refrigerant is a liquid;
The cooling means supplies the secondary refrigerant cooled in the secondary refrigerant cooler for cooling the secondary refrigerant to the cooling system condenser, and receives the heat from the primary refrigerant in the cooling system condenser. A secondary cooling circuit for supplying a secondary refrigerant to the secondary refrigerant cooler;
The control unit controls the flow rate of the secondary refrigerant that the cooling means supplies to the cooling system condenser based on the pressure value measured by the pressure gauge ,
The secondary cooling circuit includes a flow rate control valve that allows the flow rate of the secondary refrigerant to be adjusted, and includes a switching valve provided in a path that bypasses the path that includes the flow rate control valve,
The controller is
If the pressure value measured by the pressure gauge exceeds the first predetermined value, increase the opening of the flow control valve,
If the pressure value measured by the pressure gauge is below a second predetermined value that is less than or equal to the first predetermined value, the opening of the flow control valve is reduced,
The dehumidification air conditioning system characterized in that the opening degree of the flow control valve is controlled so that the pressure value measured by the pressure gauge falls within a predetermined range . It is a dehumidification air conditioning system of Claim 1 , Comprising:
The control unit controls to open the on-off valve when a pressure value measured by the pressure gauge falls below a third predetermined value smaller than the second predetermined value. Dehumidifying air conditioning system. A dehumidifying air conditioning system according to claim 1 or 2 ,
The dehumidifying air-conditioning system , wherein the control unit controls the open / close valve to open when the compressor is not operating. A rotary dehumidifying rotor capable of absorbing and releasing moisture, a treatment area where the dehumidifying rotor absorbs moisture, a regeneration area where the dehumidifying rotor releases moisture, and outdoor air are taken in. A rotary dehumidifier having a regeneration fan that passes through the regeneration region and exhausts it outdoors, and a processing fan that takes in indoor air and passes it through the treatment region and blows it into the room,
A compressor that compresses the primary refrigerant; a dehumidifier system condenser that is disposed on the windward side of the dehumidifying rotor in the regeneration region and that supplies warm heat from the primary refrigerant to the air in the regeneration region; and the dehumidifier After passing through the compressor, a cooling system condenser that supplies the secondary refrigerant to the secondary refrigerant, a cooling system that supplies the secondary refrigerant to the cooling system condenser, and a cooling system condenser that supplies the secondary refrigerant to the secondary refrigerant A pressure gauge for measuring the pressure of the primary refrigerant before passing through the refrigeration means, and a primary refrigerant circuit for cooling the refrigeration means with the primary refrigerant,
With
The secondary refrigerant is a liquid;
The cooling means supplies the secondary refrigerant cooled in the secondary refrigerant cooler for cooling the secondary refrigerant to the cooling system condenser, and receives the heat from the primary refrigerant in the cooling system condenser. An apparatus for controlling a dehumidifying air conditioning system which is a secondary cooling circuit for supplying a secondary refrigerant to the secondary refrigerant cooler,
A controller that controls the flow rate of the secondary refrigerant that the cooling means supplies to the cooling system condenser based on the pressure value measured by the pressure gauge ;
The secondary cooling circuit includes a flow rate control valve that allows the flow rate of the secondary refrigerant to be adjusted, and includes an opening / closing valve in a path that bypasses the path including the flow rate control valve,
The controller is
If the pressure value measured by the pressure gauge exceeds the first predetermined value, increase the opening of the flow control valve,
If the pressure value measured by the pressure gauge is below a second predetermined value that is less than or equal to the first predetermined value, the opening of the flow control valve is reduced,
The dehumidifying air-conditioning system control apparatus , wherein the opening degree of the flow control valve is controlled so that a pressure value measured by the pressure gauge falls within a predetermined range . The dehumidifying air conditioning system control device according to claim 4,
The control unit controls to open the on-off valve when a pressure value measured by the pressure gauge falls below a third predetermined value smaller than the second predetermined value. Dehumidifying air conditioning system controller. The dehumidifying air conditioning system control device according to claim 4 or 5,
The control unit controls the dehumidifying air conditioning system to open the on-off valve when the compressor is not operating. A dehumidifying air-conditioning system comprising: a rotary dehumidifier; a primary refrigerant circuit that cools the refrigeration means with a primary refrigerant; and a controller that receives the heat from the primary refrigerant and controls the flow rate of the secondary refrigerant that is liquid. A dehumidifying air-conditioning method using
The processing fan provided in the rotary dehumidifier takes in indoor air and passes it through the processing region, so that the moisture contained in the air in the processing region is absorbed by the dehumidification rotor, and the air whose water content has decreased is reduced. A step of blowing air into the room;
The regenerative fan provided in the rotary dehumidifier takes outdoor air and passes it through the regeneration region, thereby releasing the absorbed moisture from the dehumidification rotor to the air in the regeneration region, and the air containing the moisture A step of discharging outdoors,
Compressing a refrigerant for cooling the refrigeration means by a compressor provided in the primary cooling circuit;
In the dehumidifier system condenser disposed on the windward side of the dehumidifying rotor in the regeneration region, supplying heat from the refrigerant to the air in the regeneration region;
In the cooling system condenser provided in the primary cooling circuit, supplying the heat from the primary refrigerant that has been supplied with heat by the dehumidifier system condenser to the secondary refrigerant;
The secondary refrigerant is provided by a secondary cooling circuit that includes a flow rate control valve that enables the flow rate of the secondary refrigerant to be adjusted, and that includes a switching valve provided in a path that bypasses the path that includes the flow rate control valve. The secondary refrigerant cooled in the secondary refrigerant cooler that cools the refrigerant is supplied to the cooling system condenser, and the secondary refrigerant that has received the heat from the primary refrigerant in the cooling system condenser is used as the secondary refrigerant cooler. Supplying to,
Measuring the pressure of the primary refrigerant after passing through the compressor and before passing through the refrigeration means;
If the measured pressure value exceeds a first predetermined value, the opening of the flow control valve is increased, and a pressure value measured by the pressure gauge is a second value that is less than or equal to the first predetermined value. A step of controlling the opening of the flow control valve so that the pressure value measured by the pressure gauge falls within a predetermined range by reducing the opening of the flow control valve if it falls below a predetermined value; A dehumidifying air-conditioning method comprising: It is a dehumidification air-conditioning method of Claim 7,
A dehumidifying air-conditioning method comprising: controlling the on-off valve to open when a pressure value measured by the pressure gauge falls below a third predetermined value that is smaller than the second predetermined value. A dehumidifying air-conditioning method according to claim 7 or 8,
A dehumidifying air-conditioning method, wherein the on-off valve is controlled to open when the compressor is not operating .