CN213335104U

CN213335104U - Storehouse operation control system and refrigerating unit

Info

Publication number: CN213335104U
Application number: CN202022267219.1U
Authority: CN
Inventors: 练浩民; 马宁芳; 周巍
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-01
Anticipated expiration: 2030-10-13

Abstract

The utility model relates to a storehouse operation control system and refrigerating unit is provided with supplementary heat transfer device between terminal evaporation plant of storehouse and outside refrigerating plant, and supplementary heat transfer device communicates between the return air inlet of storehouse and the air intake for the air that the return air inlet flows out can flow back to the storehouse through the air intake again after supplementary heat transfer device. Meanwhile, after the auxiliary heat exchange device is opened under the control of the controller, the refrigerant flowing out of the evaporation device at the tail end of the storehouse can further flow back to the external refrigerating device after flowing through the auxiliary heat exchange device. In the process, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that the moisture carried in the air is frosted and condensed on the auxiliary heat exchange device, and the dehumidification operation is realized. The air after dehumidification flows into the storehouse through the supply-air outlet inside again, avoids the higher emergence of air humidity in the terminal evaporation plant department of storehouse to frost, and then effectively improves the refrigeration reliability of storehouse.

Description

Storehouse operation control system and refrigerating unit

Technical Field

The application relates to the technical field of refrigeration, in particular to a warehouse operation control system and a refrigerating unit.

Background

The cold storage is a facility which is refrigerated by various devices, can be manually controlled and can keep a stable low temperature, and the cold storage can keep a certain low temperature indoors through manual refrigeration, thereby being beneficial to the freezing processing and cold storage of various foods, medicines and machines and bringing great convenience to the daily life of people. In the refrigerating operation of the storehouse, wet air leaks into the storehouse due to poor sealing and frequent entering and exiting of the storehouse, or moisture enters the air due to high humidity of a newly stored object, and the like, so that the humidity of the air in the storehouse is increased. At this time, the working temperature of the tail end heat exchanger of the storehouse is often lower than the dew point temperature of the air in the storehouse, so that the humid air around the low-temperature cooling surface of the tail end heat exchanger of the storehouse is easily changed from an unsaturated state to a saturated state, and further reaches an oversaturated state, and then one part of water vapor in the air is condensed into water drops on the cold surface (the outer surfaces of the evaporator coil and the fins thereof). As the evaporator continues to operate, condensation droplets become a frost layer that adheres to the evaporator outer surface.

After the surface of the evaporator is frosted, the thermal conductivity of the frost is smaller than that of a metal material of the evaporator by several orders of magnitude, the thermal resistance of the frost is increased by depositing on the surface of the evaporator, and the heat exchange effect is reduced. After the surface of the evaporator is frosted, the sectional area of an internal air flow passage is reduced, and the resistance is increased, so that the flow is reduced, and the heat exchange capacity is lost. In severe cases, the temperature of the storehouse will rise, or the low-pressure protection of the refrigeration host machine is stopped. Therefore, the conventional storehouse has a disadvantage of poor cooling reliability.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a warehouse operation control system and a refrigeration unit for solving the problem of poor refrigeration reliability of the conventional warehouse.

A storehouse operation control system comprises a storehouse terminal evaporation device, a controller and an auxiliary heat exchange device, wherein the storehouse terminal evaporation device is arranged inside a storehouse, the storehouse terminal evaporation device and the auxiliary heat exchange device are respectively connected with the controller, a liquid inlet end of the storehouse terminal evaporation device is used for being connected with a liquid outlet end of an external refrigerating device, a liquid outlet end of the storehouse terminal evaporation device is connected with a liquid inlet end of the auxiliary heat exchange device and a liquid inlet end of the external refrigerating device, a liquid outlet end of the auxiliary heat exchange device is connected with a liquid inlet end of the external refrigerating device, a gas inlet end of the auxiliary heat exchange device is connected to a return air inlet of the storehouse, a gas outlet end of the auxiliary heat exchange device is connected to an air inlet of the storehouse, the controller is used for controlling the auxiliary heat exchange device to be opened and operated under the condition of meeting dehumidification conditions in the storehouse refrigerating operation, so that the refrigerant flows out from the liquid outlet end of the evaporation device at the tail end of the storehouse, flows back to the external refrigerating device after passing through the auxiliary heat exchange device, and simultaneously, the air in the storehouse flows out of the storehouse from the air return opening, is dehumidified by the auxiliary heat exchange device and flows into the storehouse from the air inlet.

In one embodiment, the warehouse operation control system further comprises a moisture detector, wherein the moisture detector is arranged inside the warehouse and is connected with the controller.

In one embodiment, the terminal evaporation plant in storehouse includes terminal evaporimeter, first choke valve and first solenoid valve, terminal evaporimeter first choke valve with first solenoid valve is connected respectively the controller, the input of terminal evaporimeter is connected the one end of first choke valve, the other end of first choke valve is connected the one end of first solenoid valve, the other end of first solenoid valve is regarded as the feed liquor end and the play liquid end of outside refrigerating plant of the terminal evaporation plant in storehouse are connected, the output of terminal evaporimeter is regarded as the play liquid end of the terminal evaporation plant in storehouse, with supplementary heat transfer device's feed liquor end and outside refrigerating plant's feed liquor end are connected.

In one embodiment, the terminal evaporator is an air cooler.

In one embodiment, the warehouse operation control system further comprises a second electromagnetic valve, the auxiliary heat exchange device comprises a third electromagnetic valve, a second throttle valve, a heat exchanger and a fan, the second electromagnetic valve, the third electromagnetic valve, the second throttle valve, the heat exchanger and the fan are respectively connected with the controller, the liquid outlet end of the warehouse terminal evaporation device is connected with one end of the second electromagnetic valve, the other end of the second electromagnetic valve is connected with the liquid inlet end of an external refrigeration device, the first input end of the heat exchanger is connected with one end of the second throttle valve, the other end of the second throttle valve is connected with one end of the third electromagnetic valve, the other end of the third electromagnetic valve is used as the liquid inlet end of the auxiliary heat exchange device and is connected to one end of the second electromagnetic valve, the first output end of the heat exchanger is used as the liquid outlet end of the auxiliary heat exchange device and is connected to the other end of the second electromagnetic, the second input end of the heat exchanger is used as the air inlet end of the auxiliary heat exchange device and connected to the air return inlet of the warehouse, the second output end of the heat exchanger is connected with one end of the fan, and the other end of the fan is used as the air outlet end of the auxiliary heat exchange device and connected to the air inlet of the warehouse.

In one embodiment, the warehouse operation control system further comprises a two-way valve, the auxiliary heat exchange device comprises a third throttle valve, a heat exchanger and a fan, the two-way valve, the third throttle valve, the heat exchanger and the fan are respectively connected with the controller, a first input end of the heat exchanger is connected with one end of the third throttle valve, the other end of the third throttle valve is used as a liquid inlet end of the auxiliary heat exchange device and connected with a first outlet end of the two-way valve, an inlet end of the two-way valve is connected with a liquid outlet end of the warehouse terminal evaporation device, a second outlet end of the two-way valve is connected with a liquid inlet end of an external refrigeration device, a first output end of the heat exchanger is used as a liquid outlet end of the auxiliary heat exchange device and connected with a liquid inlet end of an external refrigeration device, and a second input end of the heat exchanger is used as a gas inlet end of, and the second output end of the heat exchanger is connected with one end of the fan, and the other end of the fan is used as the air outlet end of the auxiliary heat exchange device and is connected to the air inlet of the storehouse.

In one embodiment, the air inlet and the air return opening are provided with air valves, and the air inlet end of the auxiliary heat exchange device and the air outlet end of the auxiliary heat exchange device are respectively communicated with the interior of the storehouse through the air valves.

In one embodiment, the warehouse operation control system further comprises a touch display device, and the touch display device is connected with the controller.

A refrigerating unit comprises a refrigerating device and the storehouse operation control system.

In one embodiment, the refrigerating device comprises a suction filter, a steam separator, a compressor, an oil separator, a condenser, a reservoir, a drying filter and a fourth solenoid valve, the suction filter, the steam separator, the compressor, the oil separator, the condenser, the reservoir, the drying filter and the fourth solenoid valve are respectively connected with the controller, the input end of the suction filter is connected with the liquid outlet end of the auxiliary heat exchange device as the liquid inlet end of the refrigerating device, the input end of the suction filter is connected with the input end of the steam separator, the output end of the steam separator is connected with the input end of the compressor, the output end of the compressor is connected with the input end of the oil separator, the output end of the oil separator is connected with the input end of the condenser, the output of condenser is connected the input of reservoir, the output of reservoir is connected drier-filter's input, drier-filter's output is connected the one end of fourth solenoid valve, the other end of fourth solenoid valve is regarded as refrigerating plant's play liquid end is connected to terminal evaporation plant's in storehouse feed liquor end.

According to the storehouse operation control system and the refrigerating unit, the auxiliary heat exchange device is arranged between the evaporation device at the tail end of the storehouse and the external refrigerating device, the auxiliary heat exchange device is used for communicating the air return opening of the storehouse with the air inlet, and air flowing out of the air return opening can flow back to the storehouse through the air inlet after passing through the auxiliary heat exchange device. Meanwhile, after the auxiliary heat exchange device is opened under the control of the controller, the refrigerant flowing out of the evaporation device at the tail end of the storehouse can further flow back to the external refrigerating device after flowing through the auxiliary heat exchange device. When air in the storehouse enters from the air return opening and flows through the auxiliary heat exchange device, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that water vapor carried in the air is frosted and condensed on the auxiliary heat exchange device, and the dehumidification operation is realized. The air after dehumidification flows into the storehouse through the supply-air outlet inside again, avoids the higher emergence of air humidity in the terminal evaporation plant department of storehouse to frost, and then effectively improves the refrigeration reliability of storehouse.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a warehouse operation control system in an embodiment;

FIG. 2 is a schematic structural diagram of a warehouse operation control system in another embodiment;

FIG. 3 is a schematic structural diagram of a warehouse operation control system in another embodiment;

fig. 4 is a schematic diagram of a refrigeration unit according to an embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, a warehouse operation control system includes a warehouse end evaporation device 10, a controller 30 and an auxiliary heat exchange device 20, the warehouse end evaporation device 10 is disposed inside a warehouse, the warehouse end evaporation device 10 and the auxiliary heat exchange device 20 are respectively connected to the controller 30, a liquid inlet end of the warehouse end evaporation device 10 is used for being connected to a liquid outlet end of an external refrigeration device 40, a liquid outlet end of the warehouse end evaporation device 10 is connected to a liquid inlet end of the auxiliary heat exchange device 20 and a liquid inlet end of the external refrigeration device 40, a liquid outlet end of the auxiliary heat exchange device 20 is connected to a liquid inlet end of the external refrigeration device 40, a gas inlet end of the auxiliary heat exchange device 20 is connected to a gas return port 70 of the warehouse, a gas outlet end of the auxiliary heat exchange device 20 is connected to a gas inlet 60 of the warehouse, the controller 30 is used for controlling the auxiliary heat exchange device 20 to be opened and operated under the condition of dehumidification during the warehouse refrigeration operation, so that the refrigerant flows out from the liquid outlet end of the evaporation device 10 at the tail end of the storehouse, flows back to the external refrigeration device 40 after passing through the auxiliary heat exchange device 20, and simultaneously, the air in the storehouse flows out of the storehouse from the air return port 70, is dehumidified by the auxiliary heat exchange device 20 and flows into the storehouse from the air inlet 60.

Specifically, the inlet end is a port into which the refrigerant flows, the outlet end is a port from which the refrigerant flows out, the inlet end is a port into which air flows, and the outlet end is a port from which air flows out. In the normal refrigeration link, the controller 30 controls the auxiliary heat exchange device 20 to be in a closed state, accordingly, no air flows between the air return opening and the air inlet of the storehouse at the moment, the whole storehouse is in a closed state, and the cooling operation inside the storehouse is realized through the terminal evaporation device 10 of the storehouse. Correspondingly, at this time, the liquid outlet end of the external refrigeration device 40 conveys the refrigerant to the liquid inlet end of the storehouse terminal evaporation device 10, the storehouse terminal evaporation device 10 utilizes the refrigerant to realize refrigeration operation, and after refrigeration is completed, the refrigerant flows out through the liquid outlet end of the storehouse terminal evaporation device 10, and because the auxiliary heat exchange device 20 is in a closed state, the refrigerant does not flow through the auxiliary heat exchange device 20 at this time, but directly flows into the liquid inlet end of the external refrigeration device 40, so that a refrigeration cycle is realized.

And under the condition that the air in the storehouse needs to be dehumidified, the controller 30 controls the auxiliary heat exchanger to be opened, so that the air supply management between the air return opening and the air inlet of the storehouse is in a conduction state, meanwhile, the pipeline between the auxiliary heat exchange device 20 and the terminal evaporation device 10 of the storehouse is conducted, and the pipeline between the terminal evaporation device 10 of the storehouse and the external refrigeration device 40 is closed to be conducted. At this time, the refrigerant flowing out of the external refrigeration device 40 flows in through the liquid inlet end of the storehouse terminal evaporation device 10, flows out of the liquid outlet end of the storehouse terminal evaporation device 10, flows in through the liquid inlet end of the auxiliary heat exchange device 20, and finally flows in through the liquid outlet end of the auxiliary heat exchange device 20 to the liquid inlet end of the external refrigeration device 40, so that the refrigeration cycle is realized. When air in the storehouse enters from the air return opening and flows through the auxiliary heat exchange device 20, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that moisture carried in the air is frosted and condensed on the auxiliary heat exchange device 20, and the dehumidification operation is realized. The air after dehumidification flows into the storehouse through the air supply outlet, so that the air dehumidification pretreatment is carried out on the evaporation device 10 at the tail end of the storehouse, and the frosting at the evaporation device 10 at the tail end of the storehouse due to higher air humidity is avoided. Through the scheme of this embodiment, can realize carrying out the dehumidification operation when carrying out the refrigeration to the storehouse to can not exert an influence to normal refrigeration, have stronger work convenience.

After the dehumidification operation is completed, under the control of the controller 30, the auxiliary heat exchanger 20 is closed, and a pipeline between the liquid outlet end of the terminal evaporation device 10 of the warehouse and the liquid inlet end of the external refrigeration device 40 is opened, so that the refrigerant flowing out of the terminal evaporation device directly returns to the external refrigeration device 40. And defrosting the condensed frost layer on the auxiliary heat exchange device 20 so as to be performed in time when the subsequent process needs to be performed again.

It should be noted that the manner of determining whether the dehumidification condition is satisfied by the controller 30 is not exclusive, and in one embodiment, the controller 30 may analyze whether a dehumidification operation command sent by a user is received to determine whether to turn on the auxiliary heat exchange device 20 for dehumidification. In other embodiments, the humidity of the air inside the warehouse may be detected, and the auxiliary heat exchange device 20 is turned on to dehumidify the warehouse when the humidity of the air reaches a certain degree.

Taking the example of detecting the humidity of the air in the warehouse as an example, referring to fig. 2, in an embodiment, the warehouse operation control system further includes a humidity detector 50, the humidity detector 50 is disposed inside the warehouse, and the humidity detector 50 is connected to the controller 30. In this embodiment, the air humidity in the storehouse is detected in real time for comparative analysis, and when the air humidity in the storehouse is greater than or equal to the preset humidity value, the controller 30 controls the auxiliary heat exchange device 20 to be opened for dehumidification. Correspondingly, when the air humidity is smaller than the preset humidity value, the auxiliary heat exchange device 20 is controlled to close the operation, and the dehumidification operation is finished. It is to be understood that the type of moisture detector 50 is not exclusive and, in one embodiment, may be implemented by a moisture sensor.

Referring to fig. 2, for performing the dehumidifying operation according to the received dehumidifying command sent by the user, in one embodiment, the warehouse operation control system further includes a touch display device, and the touch display device is connected to the controller 30. In this example, whether need carry out dehumidification processing to the storehouse, through user's self-control, be provided with corresponding virtual button on touch-control display device, open the storehouse door or put into under the circumstances such as the great object of moisture in the storehouse when the user, the user can combine self demand to press corresponding virtual button, realizes the sending of dehumidification instruction, and then controller 30 controls supplementary heat transfer device 20 after receiving the dehumidification instruction and opens, carries out the dehumidification operation.

Further, in an embodiment, the warehouse operation control system includes both the touch display device and the humidity detector 50, the humidity of the air in the warehouse can be displayed in real time through the touch display device, and at this time, the controller 30 can perform the dehumidification process in a manner of automatic control according to the humidity data and/or manual control according to the dehumidification command.

Referring to fig. 3, in an embodiment, the terminal evaporation device 10 of the warehouse includes a terminal evaporator 11, a first throttle valve 12 and a first electromagnetic valve 13, the terminal evaporator 11, the first throttle valve 12 and the first electromagnetic valve 13 are respectively connected to a controller 30 (not shown), an input end of the terminal evaporator 11 is connected to one end of the first throttle valve 12, the other end of the first throttle valve 12 is connected to one end of the first electromagnetic valve 13, the other end of the first electromagnetic valve 13 is used as a liquid inlet end of the terminal evaporation device 10 of the warehouse and is connected to a liquid outlet end of the external refrigeration device 40, and an output end of the terminal evaporator 11 is used as a liquid outlet end of the terminal evaporation device 10 of the warehouse and is connected to a liquid inlet end of the auxiliary heat exchange device 20 and a liquid inlet end of the external refrigeration device 40.

Specifically, the throttling valve is a valve for controlling the flow rate of fluid by changing the throttling cross section or the throttling length, and the storehouse end evaporating device 10 of the present embodiment is provided with a first electromagnetic valve 13 and a first throttling valve 12 between the liquid inlet end of the end evaporator 11 and the liquid outlet end of the external refrigerating device 40 in addition to the end evaporator 11 for implementing the storehouse refrigerating operation. The first solenoid valve 13 can control whether the refrigerant flowing out of the external cooling device 40 flows into the end evaporator 11, and the first throttle valve 12 changes the throttle section or the throttle length to control the fluid flow rate, so that a certain pressure difference is formed between the front and rear of the throttle valve. Through the scheme of this embodiment, it can be ensured that the external refrigeration device 40 effectively delivers the refrigerant to the end evaporator 11, and the cooling operation inside the storehouse is realized.

It should be noted that the type of the throttle valve is not exclusive, and in one embodiment, a thermal expansion valve may be adopted, and since the thermal expansion valve is provided with a thermal bulb, the thermal bulb may be arranged at the refrigerant outlet (i.e. the liquid outlet end of the end evaporator 11) to feed back the temperature, and the thermal expansion valve body is arranged at the liquid inlet end of the end evaporator 11, so as to adjust the throttling capacity through the fed-back temperature. Likewise, the type of the end evaporator 11 is not exclusive, and in one embodiment, the end evaporator 11 is a cold air blower.

Referring to fig. 3, in an embodiment, the warehouse operation control system further includes a second electromagnetic valve 80, the auxiliary heat exchange device 20 includes a third electromagnetic valve 21, a second throttle valve 22, a heat exchanger 23 and a fan 24, the second electromagnetic valve 80, the third electromagnetic valve 21, the second throttle valve 22, the heat exchanger 23 and the fan 24 are respectively connected to the controller 30 (not shown), the liquid outlet end of the warehouse end evaporation device 10 is connected to one end of the second electromagnetic valve 80, the other end of the second electromagnetic valve 80 is connected to the liquid inlet end of the external refrigeration device 40, a first input end of the heat exchanger 23 is connected to one end of the second throttle valve 22, the other end of the second throttle valve 22 is connected to one end of the third electromagnetic valve 21, the other end of the third electromagnetic valve 21 is connected to one end of the second electromagnetic valve 80 as the liquid inlet end of the auxiliary heat exchange device 20, a first output end of the heat exchanger 23 is connected to the other end of the second electromagnetic, the second input end of the heat exchanger 23 is connected to the return air inlet of the warehouse as the air inlet end of the auxiliary heat exchange device 20, the second output end of the heat exchanger 23 is connected to one end of the fan 24, and the other end of the fan 24 is connected to the air inlet of the warehouse as the air outlet end of the auxiliary heat exchange device 20.

Specifically, in the present embodiment, the second electromagnetic valve 80 is used to realize the refrigerant transmission control between the terminal evaporation device 10 of the warehouse and the external refrigeration device 40, and when the second electromagnetic valve 80 is opened, the refrigerant flowing out of the terminal evaporation device 10 of the warehouse can directly flow back to the external refrigeration device 40 through the second electromagnetic valve 80, and is cooled by the external refrigeration device 40, and circulates back to the terminal evaporation device 10 of the warehouse again for refrigeration. Meanwhile, the third electromagnetic valve 21 is adopted to realize the circulation control of the refrigerant between the storehouse tail end evaporation device 10 and the auxiliary heat exchange device 20, when the third electromagnetic valve 21 is opened to operate and the second electromagnetic valve 80 is closed, the refrigerant flowing out of the storehouse luminous tail end evaporation device flows into the external refrigeration device 40 to be cooled after passing through the auxiliary heat exchange device 20, and the preparation is prepared for the next refrigeration cycle.

A second throttle 22 is further disposed between the third electromagnetic valve 21 and the auxiliary heat exchanger 20, at this time, the terminal evaporation temperature at the front end of the second throttle 22 is T1, and under the secondary throttling depressurization (relative to the primary throttling depressurization of the first throttle 12 in the above embodiment) of the second throttle 22, the evaporation temperature T2 of the auxiliary heat exchanger 20 is reduced below T1, so that when part of the air in the warehouse enters the auxiliary heat exchanger 20 from the return air inlet, the refrigerant absorbs heat and is evaporated, the air releases heat to make moisture carried in the air frost and condense on the auxiliary heat exchanger 23, thereby implementing dehumidification, and the dehumidified air passes through the fan 24 and is discharged from the supply air inlet to enter the terminal evaporator 11.

Further, in order to ensure that the air inside the warehouse can flow out from the air return opening and flow back to the warehouse after being dehumidified by the auxiliary heat exchange device 20, in this embodiment, a fan 24 is further disposed between the air outlet end of the auxiliary heat exchange device 20 and the air inlet of the warehouse, and during the dehumidifying operation, the controller 30 needs to start the fan 24 to operate while opening the air inlet, the air return opening, the third electromagnetic valve 21, the second throttle valve 22 and closing the second electromagnetic valve 80.

When the controller 30 detects that the dehumidification end condition is satisfied, that is, the dehumidification end condition is received from the user or the humidity of the air in the warehouse is detected to be smaller than the preset value, the controller 30 controls the auxiliary heat exchanging device 20 to close to end the dehumidification operation. Specifically, the third solenoid valve 21 and the second throttle valve 22 are closed and the second solenoid valve 80 is opened, so that the refrigerant normally flows into the external refrigeration device 40, but at this time, the fan 24 is not immediately closed, but the fan 24 is maintained to operate for a period of time, and then the fan 24 is closed, and the air return opening and the air inlet opening are closed, so as to melt the condensed frost layer of the auxiliary heat exchange device 20 during dehumidification, and prepare for the next dehumidification operation.

In one embodiment, the warehouse operation control system further includes a two-way valve, the auxiliary heat exchange device 20 includes a third throttle valve, a heat exchanger, and a fan, the two-way valve, the third throttle valve, the heat exchanger and the fan are respectively connected with the controller 30, a first input end of the heat exchanger is connected with one end of the third throttle valve, the other end of the third throttle valve is used as a liquid inlet end of the auxiliary heat exchange device 20 to be connected with a first outlet end of the two-way valve, an inlet end of the two-way valve is connected with a liquid outlet end of the storehouse terminal evaporation device 10, a second outlet end of the two-way valve is connected with a liquid inlet end of the external refrigeration device 40, a first output end of the heat exchanger is used as a liquid outlet end of the auxiliary heat exchange device 20 to be connected with a liquid inlet end of the external refrigeration device 40, a second input end of the heat exchanger is used as a gas inlet end of the auxiliary heat exchange device 20 to be connected with a return air inlet of the storehouse, a second output.

Specifically, similar to the working principle of the above embodiment, in this embodiment, the second electromagnetic valve 80 and the third electromagnetic valve 21 are replaced by the two-way valve, when dehumidification is required, only the communication between the inlet end and the first outlet end of the two-way valve needs to be controlled, and the communication between the inlet end and the second outlet end of the two-way valve needs to be closed, that is, the refrigerant flows back to the external refrigeration device 40 after passing through the auxiliary heat exchange device 20; after dehumidification is finished, the passage between the inlet end and the first outlet end of the two-way valve is controlled to be closed, and the passage between the inlet end and the second outlet end of the two-way valve is conducted.

In one embodiment, the air inlet and the air return opening are provided with air valves, and the air inlet end of the auxiliary heat exchange device 20 and the air outlet end of the auxiliary heat exchange device 20 are respectively communicated with the interior of the warehouse through the air valves.

Specifically, the air inlet and the return air inlet of the warehouse are respectively provided with an air valve in the embodiment, so that the opening and closing control of the air inlet and the return air inlet is realized. When dehumidification is required, the controller 30 controls the auxiliary heat exchange device 20 to be opened and operated, and simultaneously opens the air valves at the air inlet and the air return inlet, so that air flows from the air return inlet to the air inlet. When the dehumidification closing condition is met, the defrosting treatment of the frost layer can be realized only by delaying to close the air valves at the air inlet and the air return inlet and delaying to close the fan 24. Through the technical scheme of this embodiment, can guarantee the normal refrigeration in-process of storehouse, the air in the storehouse can not flow from the return air inlet, avoids the external environment to cause the influence to the temperature in the storehouse, further guarantees storehouse operation control system's refrigeration reliability.

In the dehumidification scheme, the auxiliary heat exchange device 20 can be opened in the normal refrigeration process of the storehouse, and the refrigerant after evaporation is adopted, so that the influence on normal refrigeration is very small. At the moment, a part of heat exchange area which does not exchange heat with the air in the storehouse is sacrificed, and the influence on heat exchange caused by frosting of the evaporation device 10 at the tail end of the storehouse can be avoided. Meanwhile, due to the secondary throttling of the second throttling valve 22, the evaporation temperature T2 of the auxiliary heat exchange device 20 is lower than the evaporation temperature T1 at the tail end of the storehouse, so that moisture in the air in the storehouse can be quickly condensed into frost in a low-temperature cooling mode more efficiently, and the dehumidification operation is realized.

According to the warehouse operation control system, the auxiliary heat exchange device 20 is arranged between the warehouse tail end evaporation device 10 and the external refrigeration device 40, the auxiliary heat exchange device 20 is used for communicating the air return opening and the air inlet of the warehouse, and air flowing out of the air return opening can flow back to the warehouse through the air inlet after passing through the auxiliary heat exchange device 20. Meanwhile, after the auxiliary heat exchange device 20 is opened under the control of the controller 30, the refrigerant flowing out of the terminal evaporation device 10 of the storehouse can further flow through the auxiliary heat exchange device 20 and then flow back to the external refrigeration device 40. When air in the storehouse enters from the air return opening and flows through the auxiliary heat exchange device 20, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that moisture carried in the air is frosted and condensed on the auxiliary heat exchange device 20, and the dehumidification operation is realized. The air after the dehumidification flows into the storehouse through the supply-air outlet again inside, avoids the higher emergence of air humidity in the terminal evaporation plant 10 department of storehouse to frost, and then effectively improves the refrigeration reliability of storehouse.

Referring to fig. 4, a refrigeration unit includes a refrigeration device 40 and the above-mentioned warehouse operation control system.

Specifically, as shown in the above embodiments, in the normal refrigeration link, the controller 30 controls the auxiliary heat exchange device 20 to be in the closed state, accordingly, no air flows between the air return opening and the air inlet of the warehouse at this time, the whole warehouse is in the closed state, and the cooling operation inside the warehouse is realized through the terminal evaporation device 10 of the warehouse. Correspondingly, at this time, the liquid outlet end of the external refrigeration device 40 conveys the refrigerant to the liquid inlet end of the storehouse terminal evaporation device 10, the storehouse terminal evaporation device 10 utilizes the refrigerant to realize refrigeration operation, and after refrigeration is completed, the refrigerant flows out through the liquid outlet end of the storehouse terminal evaporation device 10, and because the auxiliary heat exchange device 20 is in a closed state, the refrigerant does not flow through the auxiliary heat exchange device 20 at this time, but directly flows into the liquid inlet end of the external refrigeration device 40, so that a refrigeration cycle is realized.

And under the condition that the air in the storehouse needs to be dehumidified, the controller 30 controls the auxiliary heat exchanger 23 to be opened, so that the air supply management between the air return opening and the air inlet of the storehouse is in a conduction state, meanwhile, the pipeline between the auxiliary heat exchange device 20 and the storehouse terminal evaporation device 10 is conducted, and the pipeline between the storehouse terminal evaporation device 10 and the external refrigeration device 40 is closed to be conducted. At this time, the refrigerant flowing out of the external refrigeration device 40 flows in through the liquid inlet end of the storehouse terminal evaporation device 10, flows out of the liquid outlet end of the storehouse terminal evaporation device 10, flows in through the liquid inlet end of the auxiliary heat exchange device 20, and finally flows in through the liquid outlet end of the auxiliary heat exchange device 20 to the liquid inlet end of the external refrigeration device 40, so that the refrigeration cycle is realized. When air in the storehouse enters from the air return opening and flows through the auxiliary heat exchange device 20, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that moisture carried in the air is frosted and condensed on the auxiliary heat exchange device 20, and the dehumidification operation is realized. The air after dehumidification flows into the storehouse through the air supply outlet, so that the air dehumidification pretreatment is carried out on the evaporation device 10 at the tail end of the storehouse, and the frosting at the evaporation device 10 at the tail end of the storehouse due to higher air humidity is avoided. Through the scheme of this embodiment, can realize carrying out the dehumidification operation when carrying out the refrigeration to the storehouse to can not exert an influence to normal refrigeration, have stronger work convenience.

Further, with continuing reference to fig. 4, in an embodiment, the refrigeration apparatus 40 includes a suction filter 41, a vapor separator 42, a compressor 42, an oil separator 44, a condenser 45, a reservoir 46, a dry filter 47, and a fourth solenoid valve 48, the suction filter 41, the vapor separator 42, the compressor 42, the oil separator 44, the condenser 45, the reservoir 46, the dry filter 47, and the fourth solenoid valve 48 are respectively connected to the controller 30 (not shown), an input end of the suction filter 41 serves as an inlet end of the refrigeration apparatus 40 and is connected to an outlet end of the warehouse end evaporator 10 and is connected to an outlet end of the auxiliary heat exchange apparatus 20, an input end of the suction filter 41 is connected to an input end of the vapor separator 42, an output end of the vapor separator 42 is connected to an input end of the compressor 42, an output end of the compressor 42 is connected to an input end of the oil separator 44, an output end, the output end of the condenser 45 is connected with the input end of the liquid storage device 46, the output end of the liquid storage device 46 is connected with the input end of the drying filter 47, the output end of the drying filter 47 is connected with one end of the fourth electromagnetic valve 48, and the other end of the fourth electromagnetic valve 48 is used as the liquid outlet end of the refrigerating device 40 and is connected with the liquid inlet end of the storehouse terminal evaporation device 10.

Specifically, during normal refrigeration, the refrigerant flowing back from the end evaporation device 10 of the storehouse or the refrigerant flowing back after passing through the auxiliary heat exchange device 20 first passes through the suction filter 41 to remove impurities in the medium, then enters the vapor separator 42 for gas-liquid separation, then passes through the compressor 42 for pressurization treatment, and then flows into the oil separator 44 to separate lubricating oil in the high-pressure vapor discharged from the compressor 42. Then, the condensed water flows into the condenser 45 to be condensed and cooled, and is stored in the reservoir 46. When needed, the refrigerant flows out of the reservoir 46 and further through a dry filter 47 and flows back to the end-of-store evaporator 10 to achieve refrigeration.

It will be appreciated that in one embodiment, the oil separator 44 is further coupled to the compressor 42 to return the separated lubricant oil from the compressor 42 to ensure proper operation of the compressor 42. In a possible embodiment, after the refrigeration unit completes the dehumidification operation, the auxiliary heat exchange device may be defrosted by using the condensation heat of the refrigeration device 40, and the defrosting efficiency is higher due to the higher air temperature.

In the refrigeration unit, the auxiliary heat exchange device 20 is arranged between the evaporation device 10 at the tail end of the warehouse and the external refrigeration device 40, and the auxiliary heat exchange device 20 communicates the air return opening and the air inlet opening of the warehouse, so that air flowing out of the air return opening can flow back to the warehouse through the air inlet opening after passing through the auxiliary heat exchange device 20. Meanwhile, after the auxiliary heat exchange device 20 is opened under the control of the controller 30, the refrigerant flowing out of the terminal evaporation device 10 of the storehouse can further flow through the auxiliary heat exchange device 20 and then flow back to the external refrigeration device 40. When air in the storehouse enters from the air return opening and flows through the auxiliary heat exchange device 20, the refrigerant absorbs heat and is evaporated, and the heat of the air is released, so that moisture carried in the air is frosted and condensed on the auxiliary heat exchange device 20, and the dehumidification operation is realized. The air after the dehumidification flows into the storehouse through the supply-air outlet again inside, avoids the higher emergence of air humidity in the terminal evaporation plant 10 department of storehouse to frost, and then effectively improves the refrigeration reliability of storehouse.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A storehouse operation control system is characterized by comprising a storehouse terminal evaporation device, a controller and an auxiliary heat exchange device, wherein the storehouse terminal evaporation device is arranged inside a storehouse, the storehouse terminal evaporation device and the auxiliary heat exchange device are respectively connected with the controller, a liquid inlet end of the storehouse terminal evaporation device is used for being connected with a liquid outlet end of an external refrigerating device, a liquid outlet end of the storehouse terminal evaporation device is connected with a liquid inlet end of the auxiliary heat exchange device and a liquid inlet end of the external refrigerating device, a liquid outlet end of the auxiliary heat exchange device is connected with a liquid inlet end of the external refrigerating device, a gas inlet end of the auxiliary heat exchange device is connected to a return air inlet of the storehouse, a gas outlet end of the auxiliary heat exchange device is connected to an air inlet of the storehouse,

the controller is used for controlling the auxiliary heat exchange device to be started to operate under the condition that dehumidification conditions are met in the refrigerating operation of the storeroom, so that a refrigerant flows out from the liquid outlet end of the evaporation device at the tail end of the storeroom and flows back to the external refrigerating device through the auxiliary heat exchange device, meanwhile, air in the storeroom flows out of the storeroom from the air return opening, and flows into the storeroom from the air inlet after dehumidification treatment is carried out by the auxiliary heat exchange device.

2. The system of claim 1, further comprising a moisture detector disposed inside the warehouse, the moisture detector being connected to the controller.

3. The storehouse operation control system according to claim 1, wherein the storehouse terminal evaporation device includes a terminal evaporator, a first throttle valve, and a first solenoid valve, the terminal evaporator, the first throttle valve, and the first solenoid valve being respectively connected to the controller,

the input of terminal evaporimeter is connected the one end of first choke valve, the other end of first choke valve is connected the one end of first solenoid valve, the other end of first solenoid valve is regarded as the feed liquor end of the terminal evaporation plant in storehouse is connected with outside refrigerating plant's play liquid end, the output of terminal evaporimeter is regarded as the terminal evaporation plant in storehouse's play liquid end, with supplementary heat transfer device's feed liquor end and outside refrigerating plant's feed liquor end are connected.

4. The warehouse operation control system of claim 3, wherein the terminal evaporator is an air cooler.

5. The storehouse operation control system according to claim 1, further comprising a second solenoid valve, wherein the auxiliary heat exchange device comprises a third solenoid valve, a second throttle valve, a heat exchanger and a fan, the second solenoid valve, the third solenoid valve, the second throttle valve, the heat exchanger and the fan are respectively connected to the controller,

the liquid outlet end of the storehouse terminal evaporation device is connected with one end of the second electromagnetic valve, the other end of the second electromagnetic valve is connected with the liquid inlet end of an external refrigeration device, the first input end of the heat exchanger is connected with one end of the second throttle valve, the other end of the second throttle valve is connected with one end of the third electromagnetic valve, the other end of the third electromagnetic valve is used as a liquid inlet end of the auxiliary heat exchange device and is connected to one end of the second electromagnetic valve, a first output end of the heat exchanger is used as a liquid outlet end of the auxiliary heat exchange device and is connected to the other end of the second electromagnetic valve, the second input end of the heat exchanger is used as the air inlet end of the auxiliary heat exchange device and is connected to the air return inlet of the storehouse, and the second output end of the heat exchanger is connected with one end of the fan, and the other end of the fan is used as the air outlet end of the auxiliary heat exchange device and is connected to the air inlet of the storehouse.

6. The warehouse operation control system of claim 1, further comprising a two-way valve, wherein the auxiliary heat exchange device comprises a third throttle valve, a heat exchanger and a fan, the two-way valve, the third throttle valve, the heat exchanger and the fan are respectively connected to the controller,

the first input end of the heat exchanger is connected with one end of the third throttle valve, the other end of the third throttle valve is used as the liquid inlet end of the auxiliary heat exchange device to be connected with the first outlet end of the two-way valve, the inlet end of the two-way valve is connected with the liquid outlet end of the terminal evaporation device of the storehouse, the second outlet end of the two-way valve is connected with the liquid inlet end of the external refrigeration device, the first output end of the heat exchanger is used as the liquid outlet end of the auxiliary heat exchange device to be connected with the liquid inlet end of the external refrigeration device, the second input end of the heat exchanger is used as the air inlet end of the auxiliary heat exchange device to be connected to the air return port of the storehouse, the second output end of the heat exchanger is connected with one end of the fan, and the other end of.

7. The storehouse operation control system according to claim 1, wherein the air inlet and the air return port are provided with air valves, and the air inlet end of the auxiliary heat exchange device and the air outlet end of the auxiliary heat exchange device are respectively communicated with the interior of the storehouse through the air valves.

8. The system of claim 1, further comprising a touch display device, wherein the touch display device is connected to the controller.

9. A refrigeration unit comprising a refrigeration unit and the warehouse operation control system of any one of claims 1 to 8.

10. The refrigeration unit as set forth in claim 9 wherein said refrigeration unit includes a suction filter, a vapor separator, a compressor, an oil separator, a condenser, an accumulator, a dry filter and a fourth solenoid valve, said suction filter, said vapor separator, said compressor, said oil separator, said condenser, said accumulator, said dry filter and said fourth solenoid valve being connected to said controller respectively,

the input of filter of breathing in is regarded as refrigerating plant's inlet end is connected to storehouse terminal evaporation plant's play liquid end is connected supplementary heat transfer device's play liquid end, the input of filter of breathing in is connected the input of vapor separator, the output of vapor separator is connected the input of compressor, the output of compressor is connected the input of oil separator, the output of oil separator is connected the input of condenser, the output of condenser is connected the input of reservoir, the output of reservoir is connected the input of dry filter, the output of dry filter is connected the one end of fourth solenoid valve, the other end of fourth solenoid valve is regarded as refrigerating plant's play liquid end is connected to storehouse terminal evaporation plant's inlet end.