JP2020098085A - Air conditioning system - Google Patents

Abstract

To provide an air conditioning system that enables reduction in a device size, can treat heat discharged from a refrigerator with a simple configuration and can securely evaporate dew condensation water generated during cooling of a product accommodation section.SOLUTION: An air conditioning system includes: a refrigerator air conditioner 40 supplying air for treating heat discharged from a refrigerator 20; a drain water evaporation treatment mechanism 24 evaporating drain water generated in a refrigeration open showcase 10 by using air supplied from the refrigerator air conditioner 40 to the refrigerator 20 and including heat discharged from the refrigerator 20; a drain water level sensor 54 serving as a drain water amount acquisition section for acquiring the amount of drain water stored in a drain pan provided in the drain water evaporation treatment mechanism 24; and a controller serving as a supply air temperature control section for controlling a temperature of air to be supplied from the refrigerator air conditioner 40 on the basis of the amount of drain water acquired by the drain water level sensor 54.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to an air conditioning system for a store in which a showcase including a refrigerator is installed.

For example, in a store such as a convenience store, a showcase including a refrigerator including a compressor and a condenser may be installed. The heat discharged from the refrigerator built into the showcase acts to reduce the heating load when the store is heated, such as during the winter, but it cools the store during the summer. In this state, it acts to increase the cooling load.

In a conventional store, in order to suppress an increase in the cooling load due to the heat discharged from the refrigerator, air for processing the heat discharged from the refrigerator is supplied from outside the store and heated by the heat discharged from the refrigerator. There is known one provided with an air supply/exhaust device for discharging the generated air to the outside of the store (for example, refer to Patent Document 1).

JP, 2016-57012, A

In a store provided with the air supply/exhaust device, an air supply passage for supplying air outside the store to the refrigerator and an exhaust passage for discharging air discharged from the refrigerator outside the store are provided in the ceiling. Therefore, the equipment becomes complicated and large in size. In addition, in a store equipped with the air supply/exhaust device, air outside the store, which becomes hot in the summer or the like, is supplied to the refrigerator, so that it is necessary to increase the heat exchange area with the refrigerant in the condenser.

Further, the showcase having a built-in refrigerator is provided with a drain water evaporation processing mechanism, and the drain water generated by cooling the inside of the product storage section is evaporated by the air from which the heat discharged from the refrigerator is released. However, since the amount of drain water evaporated varies depending on the temperature and flow rate of the air that evaporates the drain water, it is difficult to reliably process the drain water and eliminate the drainage mechanism.

It is an object of the present invention to suppress the increase in size of the device and process the heat discharged from the refrigerator with a simple structure to reliably evaporate the drain water generated when the product storage unit is cooled. It is to provide an air conditioning system that can.

In order to achieve the above-mentioned object, the air conditioning system of the present invention is an air conditioning system for a store, in which a showcase having a built-in refrigerator is installed, and is an air conditioning system for treating heat discharged from the refrigerator. An air conditioner for a refrigerator to be supplied and drain water generated in the showcase by evaporating the drain water generated by the air supplied from the air conditioner for a refrigerator to the refrigerator and containing the heat discharged from the refrigerator. Evaporation processing mechanism, a drain water amount acquisition unit for acquiring the amount of drain water stored in the drain pan of the drain water evaporation processing mechanism, and based on the amount of drain water acquired in the drain water amount acquisition unit, the refrigerator And a supply air temperature control unit that controls the temperature of the air supplied from the air conditioner.

ADVANTAGE OF THE INVENTION According to this invention, the heat|fever discharged from the refrigerator of a showcase can be processed by the air conditioner for refrigerators, and the evaporation amount of drain water in a drain water evaporation processing mechanism can be adjusted. Therefore, the heat discharged from the refrigerator can be processed with a simple configuration without requiring a device for discharging the heat discharged from the refrigerator to the outside of the store, and the increase in the size of the device can be suppressed. be able to. In addition, the drain water can be surely evaporated in the drain water evaporation processing mechanism.

It is a schematic block diagram of the air conditioning system which shows one Embodiment of this invention. It is a main part schematic block diagram of an air conditioning system. It is a block diagram showing a control system. It is a flow chart which shows drain water evaporation amount adjustment processing.

1 to 4 show an embodiment of the present invention.

As shown in FIG. 1, the air conditioning system of the present invention is for adjusting the temperature and humidity in a store 1 such as a convenience store.

The store 1 is configured in a substantially rectangular parallelepiped space formed inside a building, and has a doorway 1a provided at one end side in the longitudinal direction of a wall surface at one end side in the short side direction of the space.

In the store 1, a plurality of product shelves 2 arranged at intervals in the lateral direction of the store 1 and extending in the longitudinal direction, and a counter 3 provided at one end side in the store 1 in the longitudinal direction. Adjacent to the warehouse 4 provided on the other end side in the longitudinal direction within the store 1, the walk-in refrigerator 5 provided in the warehouse 4, and the product shelf 2 located on the other end side in the lateral direction within the store 1. A freezing open showcase 6 provided side by side, a reach-in freezer 7 and a plurality of refrigerating open showcases 10 provided along the wall surface on the other end side in the lateral direction in the store 1 are installed. There is.

The walk-in refrigerator 5 is a product provided inside the warehouse 4 for the product take-out opening provided on the aisle side of the store 1 and a worker who replenishes the product display shelves inside the store with goods. It is formed in a box shape having a refill opening. The walk-in refrigerator 5 has a product take-out opening that is opened and closed by a product take-out door through which a product displayed on an internal product display shelf can be visually confirmed by a transparent member such as a glass plate. It is opened and closed by the door.

The frozen open showcase 6 is a flat open showcase having an open top surface, and has a product storage portion for storing products such as ice confectionery inside. The frozen open showcase 6 has an air curtain formed at the opening on the upper surface.

The reach-in freezer 7 is a freezer in which a front surface is opened and a product storage unit for storing products such as frozen foods is formed inside. The reach-in freezer 7 is opened and closed by a product take-out door whose front opening is made visible by a transparent member such as a glass plate.

The plurality of refrigerating open showcases 10 are multi-stage open showcases each having a main body whose front surface is opened. As shown in FIG. 2, the refrigerating open showcase 10 is provided with a product storage unit 11 for storing products inside the main body, and a plurality of product display shelves 11a are provided in the product storage unit 11 in the vertical direction. There is. The refrigerating open showcase 10 has an air passage 12 formed along the lower surface side, the rear surface side, and the upper surface side of the product storage unit 11. Inside the ventilation passage 12, a first blower 12a for circulating air in the order of the lower surface side, the rear surface side, and the upper surface side of the product storage unit 11 is provided. An air outlet 12b facing downward is formed on the front end side of the ventilation passage 12 located on the upper surface side of the product storage unit 11. An air inlet 12c facing upward is formed on the front end side of the ventilation passage 12 located on the lower surface side of the product storage unit 11. An air curtain is formed at the front opening of the product storage unit 11 by the air flowing through the ventilation passage 12 being discharged from the air discharge port 12b and sucked from the air suction port 12c. Further, in the ventilation passage 12 located at the upper part on the back side of the refrigerated open showcase 10, an evaporator 12d for evaporating the refrigerant to cool the air flowing through the ventilation passage 12, and the refrigerant and heat in the evaporator 12d are used. A second blower 12e for circulating the exchanged air is provided.

In addition, each of the plurality of refrigerating open showcases 10 is a showcase with a built-in refrigerator in which a refrigerator 20 that constitutes a refrigeration cycle by circulating a refrigerant with the evaporator 12d is installed in the upper portion of the main body. ..

The refrigerator 20 includes a compressor (not shown) that compresses and discharges the refrigerant, a condenser 21 that condenses the refrigerant discharged from the compressor, and an expansion (not shown) that expands the refrigerant condensed in the condenser 21. It has a valve and a condenser blower 22 for circulating the air that exchanges heat with the refrigerant in the condenser 21. Devices such as the condenser 21 and the condenser blower 22 that constitute the refrigerator 20 are housed in the casing 23. The casing 23 is arranged on the front side of the upper part of the refrigerated open showcase 10.

On the front surface of the casing 23, an inflow port 23a for allowing air to flow into the casing 23 is provided. Further, an outlet 23b for letting out the air that has circulated in the casing 23 is provided on the upper surface of the casing 23.

Further, on the downstream side in the air circulation direction of the condenser 21 in the casing 23, drain water such as defrost water generated when removing the frost attached to the evaporator or the dew condensation water generated when the evaporator 12d cools the air. A drain water evaporation processing mechanism 24 for evaporating water is provided.

The drain water evaporation processing mechanism 24 has a drain pan 24a for storing drain water, and an evaporation promoting member 24b made of a nonwoven fabric for promoting evaporation of the drain water stored in the drain pan 24a. In the upper part of the refrigerating open showcase 10, a drain water flow path (not shown) is formed between the evaporator 12d and the drain pan 24a and is inclined downward from the evaporator 12d toward the drain pan 24a. The drain water generated in the evaporator 12d flows through the drain water flow path and is stored in the drain pan 24a. The drain water evaporation processing mechanism 24 evaporates the drain water by bringing the air flowing through the casing 23 into contact with the evaporation promoting member 24b that has absorbed the drain water stored in the drain pan 24a.

A guide plate 23c for guiding air supplied from an air conditioner for a refrigerator, which will be described later, toward the inlet 23a is provided on the front side of the upper portion of the refrigerating open showcase 10. The guide plate 23c extends outside the inflow port 23a in the width direction of the inflow port 23a and extends upward.

Inside the ceiling of the store 1, as shown in FIG. 1, a plurality of main air conditioners 30 for adjusting the temperature and humidity of the air in the store 1 and a refrigerator 20 of the refrigerating open showcase 10 are discharged. A plurality of refrigerator air conditioners 40 for processing heat are installed.

The plurality of main air conditioners 30 and the plurality of refrigerator air conditioners 40 correspond to indoor units of an air conditioner in which a refrigeration cycle is formed between an outdoor unit and an indoor unit. The plurality of main air conditioners 30 and the plurality of refrigerator air conditioners 40 each have an indoor heat exchanger (not shown) for exchanging heat between the air supplied into the store 1 and the refrigerant.

The plurality of main air conditioners 30 are arranged at intervals in the longitudinal direction of the store 1 on the doorway 1a side in the store 1. The plurality of main air conditioners 30 are interlocked with each other to switch operation modes such as a cooling operation mode, a heating operation mode, and a dehumidification operation mode. Each main air conditioner 30 is a so-called four-direction ceiling cassette type air conditioner having a square panel 31 attached to the ceiling surface C located below. Each main air conditioner 30 sucks the air in the store 1 from the air suction part provided in the central part of the panel 31, and enters the store from the air outlets provided along each side of the outer peripheral part of the panel 31. Blow out the air.

The plurality of refrigerator air conditioners 40 are arranged at intervals in the longitudinal direction in the store 1 on the side of the plurality of refrigerating open showcases 10 in the store 1. The plurality of refrigerator air conditioners 40 sucks the air in the store 1 to cool it, and supplies the cooled air into the store 1. Each refrigerator air conditioner 40 is a so-called built-in air conditioner. In each refrigerator air conditioner 40, as shown in FIG. 2, an air intake port (not shown) located in the ceiling and a rectangular air intake panel 41 attached to the ceiling surface C are connected via a duct 43. An air outlet (not shown) located in the ceiling and a plurality of outlets 42 attached to the ceiling surface C are connected via a duct 44. Here, the air intake panel 41 is arranged on the ceiling surface C of the store 1 at a position avoiding above the frozen open showcase 6.

The plurality of outlets 42 are so-called line-type or universal-type outlets, respectively. As shown in FIG. 1, the plurality of outlets 42 are arranged above the plurality of refrigerating open showcases 10 along the front surface of the refrigerating open showcases 10 at predetermined intervals. The plurality of outlets 42 have an outlet direction adjusting mechanism (not shown) for adjusting the outlet direction of the air when the air is blown from the ceiling surface C into the store 1. As shown in FIG. 2, the air outlets of the plurality of outlets 42 are directed to the inlet 23a of the refrigerator 20 of the refrigerating open showcase 10 located near the lower portion thereof.

Further, the air conditioning system of the present invention includes the controller 50 for controlling the operations of the main air conditioner 30 and the air conditioner 40 for the refrigerator in order to bring the temperature inside the store 1 to the set temperature.

The controller 50 has a CPU, a ROM, and a RAM. When the controller 50 receives an input signal from the device connected to the input side, the CPU reads the program stored in the ROM based on the input signal and stores the state detected by the input signal in the RAM. , Sends output signals to devices connected to the output side.

On the input side of the controller 50, as shown in FIG. 3, a setting input unit 51 for inputting settings such as a target temperature in the store 1 and an in-store temperature sensor 52 for detecting the temperature in the store 1. The refrigerator exhaust gas temperature sensor 53 for detecting the temperature above the refrigerator 20 of the refrigerating open showcase 10 in the store 1 and the drain water level stored in the drain pan 24a of the drain water evaporation processing mechanism 24 are displayed. A drain water level sensor 54 including a float switch for detection is connected to the drain water level sensor 54. A main air conditioner 30, a refrigerator air conditioner 40, and a condenser blower 22 are connected to the output side of the controller 50.

In the air conditioning system configured as described above, the main air conditioner 30 sucks the air in the store 1, heats or cools it by the indoor heat exchanger, and blows it out into the store 1. At that time, the controller 50 blows out from the main air conditioner 30 into the store 1 based on the temperature detected by the in-store temperature sensor 52 in order to set the temperature in the store 1 to the set temperature Ts set in the setting input unit 51. Control the temperature of the air.

The refrigerator air conditioner 40 sucks the air in the store 1 from the air suction panel 41, cools it by the indoor heat exchanger, and cools the air cooled from the air outlet 42 toward the inlet 23 a of the refrigerator 20. Exhaust heat treatment operation is performed.

Further, the refrigerator 20 causes the air blown into the store 1 from the refrigerator air conditioner 40 to flow into the casing 23 from the inflow port 23 a by driving the condenser blower 22. At this time, the air blown from the refrigerator air conditioner 40 into the store 1 is guided toward the inlet 23a by the guide plate 23c, so that the air is blown to the front side of the product storage unit 11 of the refrigerated open showcase 10. Distribution is regulated. The air that has flowed into the casing 23 is heated by exchanging heat with the refrigerant in the condenser 21, flows through the casing 23, and flows out from the outlet 23b into the store 1.

At this time, the controller 50 sets the temperature of the air flowing out from the outlet port 23b of the refrigerator 20 to the target temperature Tt such as the set temperature Ts in the store 1 based on the refrigerator exhaust temperature sensor 53, The temperature of the air blown from the refrigerator air conditioner 40 toward the refrigerator 20 is controlled.

Further, the controller 50 performs a drain water evaporation amount adjustment process in order to adjust the evaporation amount of the drain water in the drain water evaporation processing mechanism 24. The operation of the controller 50 at this time will be described with reference to the flowchart of FIG.

(Step S1)
In step S1, the CPU sets the target temperature Tt of the air flowing out from the outflow port 23b of the refrigerator 20 to the set temperature Ts in the store 1, and moves the process to step S2.

(Step S2)
In step S2, the CPU detects the water level of the drain water in the drain pan 24a by the drain water level sensor 54, and determines whether the detected water level H is equal to or higher than a predetermined water level H1. When it is determined that the detected water level H is equal to or higher than the predetermined water level H1, the process proceeds to step S3, and when it is not determined that the detected water level H is equal to or higher than the predetermined water level H1, the process proceeds to step S7. Transfer.

(Step S3)
When it is determined in step S2 that the water level H of the drain water in the drain pan 24a is equal to or higher than the predetermined water level H1, the CPU determines in step S3 whether the target temperature Tt is lower than the upper limit temperature Tmax within the settable range. To do. When it is determined that the target temperature Tt is lower than the upper limit temperature Tmax within the settable range, the process proceeds to step S4, and the target temperature Tt of the refrigerator air conditioner 40 is lower than the upper limit temperature Tmax within the settable range. If it is not determined that it is, the process proceeds to step S5.

(Step S4)
When it is determined in step S3 that the target temperature Tt is lower than the upper limit temperature Tmax within the settable range, in step S4, the CPU raises the target temperature Tt by a predetermined temperature X(K) and returns the process to step S2. ..

(Step S5)
When it is not determined in step S3 that the target temperature Tt is lower than the upper limit temperature Tmax within the settable range, the CPU in step S5 determines that the airflow rate F of the condenser blower 22 is within the settable upper limit Fmax. It is determined whether it is less than. When it is determined that the air flow rate F of the condenser blower 22 is less than the upper limit value Fmax within the settable range, the process proceeds to step S6, and the air flow rate F of the condenser blower 22 within the settable range upper limit value Fmax. If it is not determined that the value is less than the value, the process proceeds to step S2.

(Step S6)
When determining in step S5 that the air flow rate F of the condenser blower 22 is less than the upper limit value Fmax within the settable range, the CPU increases the air flow rate F of the condenser blower 22 by a predetermined ratio Y (%) in step S6. Then, the process proceeds to step S2.

(Step S7)
When the water level H of the drain water in the drain pan 24a is not determined to be equal to or higher than the predetermined water level H1 in step S2, the CPU in step S7 determines that the target temperature Tt is the temperature obtained by adding the predetermined temperature α to the set temperature Ts in the store 1. It is determined whether it is higher than (Ts+α). When it is determined that the target temperature Tt is higher than the temperature (Ts+α) obtained by adding the predetermined temperature α to the set temperature Ts in the store 1, the process proceeds to step S8, and the target temperature Tt of the refrigerator air conditioner 40 is set to the store 1 When it is not determined that the temperature is higher than the temperature (Ts+α) obtained by adding the predetermined temperature α to the set temperature Ts of, the process proceeds to step S9.

(Step S8)
When it is determined in step S7 that the target temperature Tt is higher than the temperature (Ts+α) obtained by adding the predetermined temperature α to the set temperature Ts in the store 1, the CPU lowers the target temperature Tt by the predetermined temperature X(K) in step S8. Then, the process proceeds to step S2.

(Step S9)
When it is not determined in step S7 that the target temperature Tt is higher than the temperature (Ts+α) obtained by adding the predetermined temperature α to the set temperature Ts in the store 1, the CPU determines in step S9 that the air flow rate F of the condenser blower 22 is the reference. It is determined whether or not it is larger than the air volume (Fr+β) obtained by adding the predetermined air volume β to the air volume Fr. When it is determined that the air volume F of the condenser blower 22 is larger than the air volume Fr (Fr+β) obtained by adding the predetermined air volume β to the reference air volume Fr, the process proceeds to step S10, and the air volume F of the condenser air blower 22 becomes the reference. When it is not determined that the air flow rate Fr is larger than the air flow rate (Fr+β) obtained by adding the predetermined air flow rate β to the step S2.

(Step S10)
When it is determined in step S9 that the air flow rate F of the condenser blower 22 is larger than the air flow rate Fr that is the reference air flow rate Fr plus the predetermined air flow rate β (Fr+β), the CPU determines the air flow rate F of the condenser blower 22 in step S10. The processing is moved to step S2 after decreasing the predetermined ratio Y (%).

As described above, the air conditioning system of the present embodiment uses the refrigerator air conditioner 40 that supplies the air for processing the heat discharged from the refrigerator 20 and the drain water generated in the refrigerating open showcase 10 as the refrigerator. A drain water evaporation processing mechanism 24 that performs an evaporation process using air containing heat that is supplied from the air conditioner 40 for the refrigerator 20 and discharged from the refrigerator 20, and a drain stored in a drain pan 24a included in the drain water evaporation processing mechanism 24. A drain water level sensor 54 as a drain water amount acquisition unit that acquires the amount of water, and supply air that controls the temperature of air supplied from the refrigerator air conditioner 40 based on the amount of drain water acquired by the drain water level sensor 54. The controller 50 as a temperature control unit.

Thus, the air conditioner 40 for the refrigerator can process the heat discharged from the refrigerator 20 of the refrigerating open showcase 10 and adjust the amount of drain water evaporated in the drain water evaporation processing mechanism 24. it can. Therefore, the heat discharged from the refrigerator 20 can be processed with a simple configuration without requiring a device for discharging the heat discharged from the refrigerator 20 to the outside of the store 1, thus increasing the size of the apparatus. Can be suppressed. Further, the drain water evaporation processing mechanism 24 can surely evaporate the drain water.

The amount of drain water stored in the drain pan 24a is acquired based on the drain water level in the drain pan 24a detected by the drain water level sensor 54.

This makes it possible to accurately obtain the amount of drain water stored in the drain pan 24a, so that it is possible to more reliably prevent the drain water from overflowing from the drain pan 24a.

Moreover, the controller 50 raises the temperature of the air supplied from the refrigerator air conditioner 40 to the refrigerator 20 when the amount of drain water acquired by the drain water level sensor 54 is equal to or more than a predetermined amount (water level H≧H1). ..

This makes it possible to supply higher-temperature air to the drain water evaporation processing mechanism 24, so that the amount of evaporation of drain water from the evaporation promoting member 24b of the drain water evaporation processing mechanism 24 can be increased. Becomes

Further, the controller 50 increases the air volume of the condenser blower 22 when the amount of drain water acquired by the drain water level sensor 54 is equal to or more than a predetermined amount (water level H≧H1).

As a result, more air can be supplied to the drain water evaporation processing mechanism 24, so that the amount of drain water evaporated from the evaporation promoting member 24b of the drain water evaporation processing mechanism 24 can be increased. Becomes

Further, the refrigerator 20 is provided on the upper part of the refrigerating open showcase 10, and an inlet 23a for introducing the air for processing the heat discharged from the refrigerator 20 is provided on the side surface of the refrigerator 20. An outlet 23b for allowing air containing heat from the refrigerator 20 to flow out is provided on the upper surface of the refrigerator 20, and the ceiling surface C in the store 1 is provided with air supplied from the refrigerator air conditioner 40 into the store 1. A blowout port 42 is provided for blowing out the air toward the inflow port 23a.

This makes it possible to supply the air discharged from the refrigerator air conditioner 40 to the refrigerator 20 without directly connecting the refrigerator air conditioner 40 and the refrigerator 20 to each other. It is possible to reduce the construction cost.

In the above embodiment, the amount of drain water stored in the drain pan 24a is detected by the drain water level sensor 54 for detecting the water level of the drain water in the drain pan 24a, but the present invention is not limited to this. is not. As long as the amount of drain water stored in the drain pan 24a can be acquired, the drain pan 24a is based on the condensation temperature of the refrigerant in the condenser 21 that constitutes the refrigerator 20 and the temperature of the air that has exchanged heat with the refrigerant in the condenser 21. You may estimate the amount of drain water in. In this case, since the drain water level sensor 54 is not required in the drain pan 24a, the number of parts can be reduced.

Further, in the above embodiment, the evaporator 12d is provided in the upper part of the refrigerating open showcase 10, the drain water evaporation processing mechanism 24 is arranged in front of the evaporator 12d, and the evaporator 12d is inclined downward toward the drain pan 24a. Although the drain water is guided to the drain pan 24a via the drain water flow path, the present invention is not limited to this. The drain water generated in the evaporator 12d may be transported to the drain pan 24a by a transport mechanism such as an electric pump. In this case, since the evaporator 12d can be arranged at a position lower than the drain water evaporation processing mechanism 24, the present invention can be applied to various kinds of showcases.

In the above-described embodiment, the condenser 21 and the condenser blower 22 are housed in the casing 23 of the refrigerator 20, but the present invention is not limited to this. Since the compressor constituting the refrigerator 20 also discharges heat into the store 1 by driving, the compressor is housed in the casing 23 together with the condenser 21 and the condenser blower 22, and the heat discharged from the compressor is frozen. The processing may be performed by the machine air conditioner 40.

Further, in the above-described embodiment, the air conditioner for the refrigerator is controlled by the controller 50 so that the temperature of the air heated by the heat released from the refrigerator 20 and flowing into the store 1 becomes the set temperature Ts in the store 1. Although the temperature of the air supplied from 40 to the refrigerator 20 is controlled, the temperature is not limited to this. For example, the controller 50 may control the temperature of the air supplied from the refrigerator air conditioner 40 to the refrigerator 20 so as to reach the set temperature Ts in the store 1. In this case, the heat discharged from the refrigerator 20 is processed by the refrigerator air conditioner 40 having a higher coefficient of performance than the refrigerating open showcase 10, and thus is discharged from the refrigerator 20. It becomes possible to process heat efficiently.

Further, in the above-described embodiment, the main air conditioner 30 is a four-direction ceiling cassette type air conditioner, and the refrigerator air conditioner 40 is a built-in air conditioner. However, the present invention is not limited to this. is not. As the main air conditioner 30 and the refrigerator air conditioner 40, a four-direction ceiling cassette type air conditioner or a built-in type air conditioner may be used.

Moreover, in the said embodiment, what used the indoor unit of the air conditioning apparatus with which a refrigerating cycle is comprised between an outdoor unit and an indoor unit as a some main air conditioner 30 and some air conditioners 40 for refrigerators. Although shown, it is not limited to this. As the main air conditioner 30 and the air conditioner 40 for the refrigerator, for example, an air handling unit or a fan coil unit that exchanges heat between cold water or hot water generated by the cold/hot water generator and the air supplied to the store 1 may be used. Good.

Moreover, in the said embodiment, while adjusting the temperature in the shop 1 with the some main air conditioner 30 and the some air conditioner 40 for refrigerators, the heat|fever discharged from the refrigerator 20 is processed. Although shown, it is not limited to this. The main air conditioner 30 and the refrigerator air conditioner 40 may each be configured by one air conditioner.

Further, in the above-described embodiment, in order to increase the evaporation amount of the drain water from the drain water evaporation processing mechanism 24, the temperature of the air supplied from the air conditioner 40 for the refrigerator is increased, or the air is blown from the blower 22 for the condenser. Although it is shown that the air volume is increased, the present invention is not limited to this. For example, the drain pan of the drain water evaporation processing mechanism may be provided with a drain pan heater constituted by a refrigerant pipe on the high pressure side of the refrigerator. In this case, the temperature of the drain pan heater can be raised by raising the set temperature of the refrigerating showcase, and the amount of drain water evaporated from the drain water evaporation processing mechanism can be increased.

DESCRIPTION OF SYMBOLS 1... Store, 10... Refrigerating open showcase, 20... Refrigerator, 21... Condenser, 22... Condenser blower, 23a... Inflow port, 23b... Outflow port, 24... Drain water evaporation processing mechanism, 24a... Drain pan, 40 ... Air conditioner for refrigerator, 42... Air outlet, 50... Controller, 54... Drain water level sensor.

Claims (7)

An air conditioning system for a store, in which a showcase with a built-in refrigerator is installed,
An air conditioner for a refrigerator, which supplies air for processing heat discharged from the refrigerator,
A drain water evaporation processing mechanism for performing an evaporation process on the drain water generated in the showcase by the air including the heat supplied from the refrigerator air conditioner to the refrigerator and discharged from the refrigerator;
A drain water amount acquisition unit that acquires the amount of drain water stored in the drain pan that the drain water evaporation processing mechanism has,
An air conditioning system comprising: a supply air temperature control unit that controls a temperature of air supplied from the air conditioner for a refrigerator based on the amount of drain water acquired by the drain water amount acquisition unit. The air conditioning system according to claim 1, wherein the drain water amount acquisition unit acquires the amount of drain water stored in the drain pan based on a water level of the drain water stored in the drain pan. The air conditioning system according to claim 1, wherein the drain water amount acquisition unit acquires the amount of drain water stored in the drain pan based on a condensation temperature of a refrigerant in a condenser that constitutes the refrigerator. The supply air temperature control unit raises the temperature of the air supplied from the air conditioner for the refrigerator when the amount of drain water acquired by the drain water amount acquisition unit is equal to or more than a predetermined amount. The air conditioning system described in Crab. The refrigerator has a blower for circulating air for processing heat discharged from the refrigerator,
The air conditioner according to any one of claims 1 to 3, wherein the blower increases the amount of air when the amount of drain water acquired by the amount of drain water acquisition unit is equal to or more than a predetermined amount. The refrigerator is provided above the showcase,
The side surface of the refrigerator is provided with an inlet for introducing air for processing heat discharged from the refrigerator,
The upper surface of the refrigerator is provided with an outlet for letting out air containing heat discharged from the refrigerator,
The air conditioner according to any one of claims 1 to 5, wherein the ceiling surface in the store is provided with a blowout port that blows out the air supplied from the refrigerator air conditioner into the store toward the inflow port. system. The air conditioning system according to claim 1, further comprising a transport mechanism that transports drain water to the drain water evaporation processing mechanism.