CN112178991B - Temperature control apparatus, defrosting method, electronic apparatus, and computer-readable medium - Google Patents
Temperature control apparatus, defrosting method, electronic apparatus, and computer-readable medium Download PDFInfo
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- CN112178991B CN112178991B CN202010975049.4A CN202010975049A CN112178991B CN 112178991 B CN112178991 B CN 112178991B CN 202010975049 A CN202010975049 A CN 202010975049A CN 112178991 B CN112178991 B CN 112178991B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
Abstract
The application provides a temperature control device, a defrosting method, an electronic device and a computer readable medium, and belongs to the technical field of air conditioners. The method comprises the steps of controlling a part of refrigerating media in a compressor to sequentially pass through a first heat exchanger and a second heat exchanger so as to carry out heat releasing operation in the first heat exchanger and heat absorbing operation in the second heat exchanger, wherein the target temperature of the environment where the first heat exchanger is located is higher than the environment temperature of the environment where the second heat exchanger is located; controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger. This application is through constantly carrying out exothermic endothermic circulation to second heat exchanger, need not to reduce indoor temperature, avoids producing the frost.
Description
Technical Field
The present application relates to the field of air conditioning technologies, and in particular, to a temperature control device, a defrosting method, an electronic device, and a computer readable medium.
Background
When the evaporation temperature of the outdoor heat exchanger is reduced to a certain temperature during heating operation of the air conditioner, water vapor in the air is condensed into frost when encountering a coil pipe of the outdoor heat exchanger and is attached to the surface of the outdoor heat exchanger to block heat exchange, so that the heat exchange capacity of the heat exchanger is reduced, and the heating effect is reduced.
The current common defrosting mode is to change the heating operation into the cooling operation by converting the flow direction of the refrigerant, and to switch the high-temperature and high-pressure cooling medium from the compressor to flow to the heat exchanger frosted by the outdoor unit, so as to melt the frost layer and achieve the purpose of defrosting.
However, this defrosting method absorbs heat from the indoor side, which lowers the indoor temperature and affects the comfort of the user.
Disclosure of Invention
An object of the embodiments of the present application is to provide a temperature control device, a defrosting method, an electronic device, and a computer readable medium, so as to solve the problem of reducing indoor temperature by defrosting. The specific technical scheme is as follows:
in a first aspect, the present application provides a temperature control apparatus, the apparatus comprising: a compressor, a multiplex valve, a first heat exchanger, and a second heat exchanger, wherein,
the compressor is respectively connected with the multi-way valve, the first heat exchanger and the second heat exchanger and is used for finishing temperature control;
the multi-way valve is respectively connected with the first heat exchanger and the second heat exchanger and is used for controlling the first heat exchanger and the second heat exchanger to carry out heat absorption or heat release operation;
the first heat exchanger is connected with the second heat exchanger and is used for performing heat releasing operation in a heating cycle and performing heat absorbing operation in a cooling cycle;
the second heat exchanger is used for performing heat releasing and absorbing operations in a defrosting cycle and performing heat releasing operations in a refrigerating cycle.
Optionally, the multi-way valve is a four-way valve, the four-way valve comprises a top connecting pipe and a bottom connecting device, and the bottom connecting device comprises a first connecting pipe, a second connecting pipe and a middle connecting pipe located between the first connecting pipe and the second connecting pipe;
the top connecting pipe and the middle connecting pipe are respectively connected with the compressor, the first connecting pipe is connected with the second heat exchanger, and the second connecting pipe is connected with the first heat exchanger.
Optionally, in the heating cycle and the defrosting cycle, the second heat exchanger includes a first sub-heat exchanger and a second sub-heat exchanger;
one end of the compressor is connected with one end of the second heat sub-exchanger through the four-way valve and the first heat exchanger, and the other end of the compressor is connected with the other end of the second heat sub-exchanger through the four-way valve so as to complete a heating cycle;
one end of the compressor is also connected with one end of the second heat exchanger through the first heat exchanger, and the other end of the compressor is connected with the other end of the second heat exchanger through the four-way valve, so that defrosting circulation is completed.
Optionally, in the refrigeration cycle, the first heat exchanger comprises a third sub-heat exchanger and a fourth sub-heat exchanger, and the compressor comprises a first compressor and a second compressor;
one end of the first compressor is connected with one end of the third sub heat exchanger and one end of the fourth sub heat exchanger through the four-way valve and the second heat exchanger respectively, the other end of the third sub heat exchanger is connected with the other end of the first compressor through the four-way valve to finish a first temperature refrigeration cycle, the other end of the fourth sub heat exchanger is connected with the other end of the second compressor to finish a second temperature refrigeration cycle, and the temperature value of the second temperature is lower than that of the first temperature.
Optionally, in the heating cycle and the defrosting cycle, the compressor includes a first compressor and a second compressor,
one end of the first compressor is connected with one end of the second heat sub-exchanger through the four-way valve and the first heat exchanger, and the other end of the first compressor is connected with the other end of the second heat sub-exchanger through the four-way valve so as to complete a heating cycle;
one end of the second compressor is connected with one end of the second sub heat exchanger through the first sub heat exchanger, and the other end of the second compressor is connected with the other end of the second sub heat exchanger through the four-way valve, so that the defrosting circulation is completed.
Optionally, one end of the first compressor is connected to a top connection pipe of the four-way valve, and a second connection pipe of the four-way valve is connected to one end of the first heat exchanger, so as to control a refrigerant medium to perform a heat release operation in the first heat exchanger through the second connection pipe;
the second sub heat exchanger is connected with a first connecting pipe of the four-way valve, and the middle connecting pipe is connected with the other end of the first compressor.
Optionally, the other end of the first heat exchanger is connected to the second heat sub-exchanger through a first expansion valve, where the first expansion valve is configured to throttle and depressurize the refrigerant after the heat release operation is performed in the first heat exchanger, so that the throttled and depressurized refrigerant enters the second heat sub-exchanger.
Optionally, one end of the second compressor is connected to one end of the first sub heat exchanger, and the other end of the first sub heat exchanger is connected to one end of the second sub heat exchanger through a second expansion valve, where the second expansion valve is configured to throttle and depressurize the refrigeration medium after performing the heat release operation in the first sub heat exchanger, so that the refrigeration medium after throttling and depressurizing enters the second sub heat exchanger.
In a second aspect, the present application provides a method of defrosting, the method comprising:
controlling a portion of a refrigerant medium in a compressor to sequentially pass through a first heat exchanger and a second heat exchanger to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger, wherein a target temperature of an environment in which the first heat exchanger is located is higher than an environment temperature of an environment in which the second heat exchanger is located;
controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger.
Optionally, the compressor includes a first compressor and a second compressor, and the controlling a portion of the refrigerant medium in the compressor sequentially passes through the first heat exchanger and the second heat exchanger includes: controlling the refrigeration medium in the first compressor to sequentially pass through a first heat exchanger and a second heat exchanger;
the controlling of the other part of the refrigeration medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger includes: and controlling the refrigerating medium in the second compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger.
Optionally, the controlling a portion of the refrigerant medium in the compressor to sequentially pass through a first heat exchanger and a second heat exchanger to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger includes:
controlling a refrigerant medium in the first compressor to enter the first heat exchanger through a multi-way valve to perform a heat releasing operation in the first heat exchanger, wherein the multi-way valve is used for controlling the first heat exchanger to perform the heat releasing operation;
controlling the refrigerant after the heat releasing operation to enter the second heat exchanger through a first expansion valve to perform a heat absorbing operation in the second heat exchanger, wherein the first expansion valve is used for throttling and depressurizing the refrigerant output from the first heat exchanger;
and controlling the refrigerant after the heat absorption operation to return to the first compressor through the multi-way valve.
Optionally, the multi-way valve is a four-way valve, and the controlling of the refrigerant medium in the first compressor to enter the first heat exchanger through the multi-way valve to perform a heat releasing operation in the first heat exchanger includes:
controlling the refrigerant in the first compressor to enter a top connecting pipe of the four-way valve;
controlling the refrigerant medium to enter the first heat exchanger through a second connection pipe of the four-way valve to perform a heat-releasing operation in the first heat exchanger.
Optionally, the multiway valve is a four-way valve, and the controlling the refrigerant after performing the heat absorption operation to return to the first compressor through the multiway valve comprises:
controlling the refrigeration medium subjected to heat absorption operation to enter a first connecting pipe of the four-way valve;
controlling the refrigerant medium to return to the first compressor from an intermediate connection pipe of the four-way valve.
Alternatively, the controlling another portion of the refrigeration medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger includes:
controlling a refrigerant medium in the second compressor to enter the first sub heat exchanger to perform a heat releasing operation in the first sub heat exchanger;
controlling the refrigerant after the heat releasing operation to enter the second sub heat exchanger through a second expansion valve to perform a heat absorbing operation in the second sub heat exchanger, wherein the second expansion valve is used for throttling and depressurizing the refrigerant output from the first sub heat exchanger;
and controlling the refrigerant after the heat absorption operation to return to the second compressor through the multi-way valve.
In a third aspect, the present application provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete mutual communication through the communication bus;
a memory for storing a computer program;
a processor for implementing any of the method steps described herein when executing the program stored in the memory.
In a fourth aspect, the present application provides a computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, performs any of the method steps.
The embodiment of the application has the following beneficial effects:
the embodiment of the application provides a defrosting method, a controller controls a part of refrigerating medium in a compressor to sequentially pass through a first heat exchanger and a second heat exchanger so as to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger, and the controller controls the refrigerating medium to perform the heat releasing operation in a first sub heat exchanger and the heat absorbing operation in a second sub heat exchanger. This application is through constantly carrying out exothermic endothermic circulation to second heat exchanger, makes second heat exchanger can not be in the low temperature state for a long time, need not to reduce indoor temperature, avoids producing the frost.
Of course, not all of the above advantages need be achieved in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a system diagram of a temperature control device;
fig. 2 is a flow diagram of a cooling medium in a normal heating mode;
FIG. 3 is a flow diagram of a refrigeration medium in an uninterrupted defrost mode;
FIG. 4 is a refrigerant flow diagram for the dual temperature refrigeration mode;
FIG. 5 is a flow chart of a defrosting method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a defrosting device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a temperature control device for controlling an air conditioner to heat or refrigerate.
A temperature control device comprising: the system comprises a compressor, a multi-way valve, a first heat exchanger and a second heat exchanger, wherein the compressor is respectively connected with the multi-way valve, the first heat exchanger and the second heat exchanger and used for finishing temperature control; the multi-way valve is respectively connected with the first heat exchanger and the second heat exchanger and is used for controlling the first heat exchanger and the second heat exchanger to carry out heat absorption or heat release operation; a first heat exchanger connected to the second heat exchanger for performing a heat releasing operation in a heating cycle and a heat absorbing operation in a cooling cycle; a second heat exchanger for performing an exothermic, endothermic operation in the defrosting cycle and an exothermic operation in the refrigeration cycle.
In the embodiment of the application, the multi-way valve comprises a plurality of connecting pipes, and each connecting pipe is respectively connected with different modules. Illustratively, the multi-way valve is a four-way valve, which is a control valve having four oil ports. The four-way valve comprises a top connecting pipe and a bottom connecting device, wherein the bottom connecting device comprises a first connecting pipe, a second connecting pipe and a middle connecting pipe positioned between the first connecting pipe and the second connecting pipe. The top connecting pipe and the middle connecting pipe are respectively connected with the compressor, the first connecting pipe is connected with the second heat exchanger, and the second connecting pipe is connected with the first heat exchanger.
The four-way valve can control the first heat exchanger and the second heat exchanger to absorb or release heat, and the working principle is that when the solenoid valve coil is in a power-off state, the pilot slide valve moves left under the drive of the right compression spring, high-pressure refrigeration medium enters the right piston cavity after entering the capillary tube, on the other hand, the refrigeration medium in the left piston cavity is discharged, and due to the pressure difference existing at the two ends of the piston, the piston and the main slide valve move left, so that the exhaust pipe is communicated with the outdoor unit connecting pipe, and the other two connecting pipes are communicated, thereby forming a refrigeration cycle.
When the solenoid valve coil is in the power-on state, the pilot slide valve overcomes the tension of the compression spring and moves to the right under the action of the magnetic force generated by the solenoid coil, high-pressure refrigeration medium enters the left end piston cavity after entering the capillary tube, on the other hand, the refrigeration medium in the right end piston cavity is discharged, and because of the pressure difference existing at the two ends of the piston, the piston and the main slide valve move to the right, so that the exhaust pipe is communicated with the indoor machine connecting pipe, and the other two connecting pipes are communicated to form a heating cycle.
The temperature control device may include two control modes, one is an uninterrupted defrosting mode, that is, a heating cycle and a defrosting cycle are performed simultaneously, and the other is a dual-temperature refrigerating mode, which will be described below.
Firstly, a defrosting mode is uninterrupted.
The uninterrupted defrosting mode comprises a heating cycle and a defrosting cycle, the second heat exchanger comprises two identical sub-exchangers which are respectively a first sub-heat exchanger and a second sub-heat exchanger, one end of the compressor is connected with one end of the second sub-heat exchanger through a four-way valve and the first heat exchanger, and the other end of the compressor is connected with the other end of the second sub-heat exchanger through the four-way valve so as to complete the heating cycle; one end of the compressor is also connected with one end of the second heat exchanger through the first heat exchanger, and the other end of the compressor is connected with the other end of the second heat exchanger through the four-way valve, so that defrosting circulation is completed. The condensing pressure of the first compressor is large and used for completing a heating cycle, and the condensing pressure of the second compressor is small and used for completing a defrosting cycle.
Since heating and defrosting are required, which indicates that the ambient temperature is relatively low, the first heat exchanger for heating is required to be in an indoor environment, the second heat exchanger for defrosting is required to be in an outdoor environment, and the target temperature of the environment in which the first heat exchanger is located is higher than the ambient temperature of the environment in which the second heat exchanger is located.
As an alternative embodiment, the compressor comprises a first compressor and a second compressor, one end of the first compressor is connected with one end of the second heat exchanger through a four-way valve and a first heat exchanger, and the other end of the first compressor is connected with the other end of the second heat exchanger through a four-way valve to complete a heating cycle; one end of the second compressor is connected with one end of the second sub heat exchanger through the first sub heat exchanger, and the other end of the second compressor is connected with the other end of the second sub heat exchanger through the four-way valve, so that the defrosting circulation is completed.
As an alternative embodiment, the solenoid coil is in a power-on state, one end of the first compressor is connected to the top connection pipe of the four-way valve, and the second connection pipe of the four-way valve is connected to one end of the first heat exchanger, so that the refrigerant is condensed in the first heat exchanger to release heat, the temperature of the first heat exchanger in the indoor environment is increased, and the indoor environment temperature is further increased.
The other end of the first heat exchanger is connected to the second sub heat exchanger through a first expansion valve. After the medium-temperature high-pressure refrigeration medium is condensed and released heat in the first heat exchanger, the medium-temperature high-pressure refrigeration medium passes through the first expansion valve, the medium-temperature high-pressure liquid refrigeration medium is throttled by the first expansion valve to become low-temperature low-pressure wet steam, the low-temperature low-pressure refrigeration medium is evaporated and absorbs heat in the second sub-heat exchanger, the temperature of the second heat exchanger in the outdoor environment is reduced, the difference between the second heat exchanger and the outdoor environment is too large, and water vapor is easily condensed to frost on the second heat exchanger. The second heat exchanger is connected with the first connecting pipe of the four-way valve, the middle connecting pipe is connected with the other end of the first compressor, namely, the refrigerating medium in the second heat exchanger returns to the first compressor through the four-way valve, thus completing one heating cycle.
The first expansion valve allows the refrigerant medium to circulate by converting the refrigerant medium from a medium temperature to a high pressure to a low temperature to a low pressure. The first expansion valve can also automatically adjust the flow rate entering the heat exchanger to keep the temperature of the heat exchanger stable.
The expansion valve is generally arranged between the liquid storage cylinder and the evaporator, the expansion valve enables a medium-temperature high-pressure liquid refrigeration medium to be throttled into low-temperature low-pressure wet steam through the expansion valve, then the refrigeration medium absorbs heat in the evaporator to achieve a refrigeration effect, and the expansion valve controls the flow of the valve through the change of superheat degree at the tail end of the evaporator to prevent the phenomena of insufficient utilization of the area of the evaporator and cylinder knocking.
As an alternative embodiment, one end of the second compressor is connected to one end of the first sub heat exchanger, the controller controls the second compressor to perform a heat releasing operation in the first sub heat exchanger to raise the temperature of the second heat exchanger, the other end of the first sub heat exchanger is connected to one end of the second sub heat exchanger through a second expansion valve, the second expansion valve throttles and reduces the pressure of the refrigerant after the heat releasing operation in the first sub heat exchanger to form low-temperature and low-pressure wet steam, the throttled and reduced refrigerant enters the second sub heat exchanger to evaporate and absorb heat in the second sub heat exchanger, and then the refrigerant returns to the first compressor through the first connecting pipe and the intermediate connecting pipe of the four-way valve to complete a defrosting cycle.
This application carries out heat absorption and exothermic operation through the continuous second heat exchanger that is in outdoor environment, makes second heat exchanger's temperature and outdoor environment's temperature can not differ too high, avoids second heat exchanger temperature to hang down the frost that produces the condensation excessively, hinders the heat exchange, has guaranteed second heat exchanger's heat exchange efficiency. This application need not also can improve the temperature of second heat exchanger from indoor heat absorption, has guaranteed the travelling comfort of user's body temperature.
And secondly, a double-temperature refrigeration mode.
As an alternative embodiment, in the refrigeration cycle, a first compressor and a second compressor are included, wherein the power of the first compressor is greater than the power of the second compressor. The first compressor is used for dehumidification cooling, and the second compressor is used for controlling the air supply temperature.
One end of the first compressor is connected with a top connecting pipe of the four-way valve, and a first connecting pipe of the four-way valve is connected with one end of the second heat exchanger so as to control the evaporation medium to perform heat release operation in the second heat exchanger through the first connecting pipe.
The second heat exchanger comprises a first sub heat exchanger and a second sub heat exchanger, the other end of the second sub heat exchanger is connected with one end of a fourth sub heat exchanger through a first expansion valve, evaporation media are controlled to evaporate and absorb heat at a second temperature in the fourth sub heat exchanger, and the other end of the fourth sub heat exchanger is connected with a second compressor to complete a refrigeration cycle at the second temperature.
The first expansion valve throttles and decompresses the evaporation medium subjected to the heat release operation in the second heat exchanger, so that the throttled and decompressed evaporation medium enters the fourth sub-heat exchanger.
The other end of the second sub heat exchanger is connected with one end of a third sub heat exchanger through a third expansion valve, evaporation media are controlled to perform evaporation heat absorption at a first temperature in the third sub heat exchanger, the other end of the third sub heat exchanger is connected with a second connecting pipe of the four-way valve, and a middleware connecting pipe of the four-way valve is connected with the other end of the first compressor to complete the refrigeration cycle at the first temperature.
The third expansion valve is used for throttling and depressurizing the evaporation medium subjected to heat release operation in the second heat exchanger, so that the throttled and depressurized evaporation medium enters the third sub-heat exchanger.
The embodiment of the application provides a double-temperature refrigeration method, the controller controls refrigeration media to refrigerate at a first temperature in a third sub heat exchanger, the control cooling media refrigerates at a second temperature in a fourth sub heat exchanger, the first temperature is higher than the second temperature, the refrigeration is evaporation heat absorption, the heat exchange amount reached by the first temperature refrigeration is higher than the heat exchange amount reached by the second temperature refrigeration, therefore, different evaporation temperatures are adopted, the problem that the heat exchange amount is too large can be avoided, the indoor temperature is too low, and the user experience is improved.
As shown in fig. 1, fig. 1 is a system diagram of a temperature control apparatus. One end of the first compressor 1 is connected to one end of the second compressor 2 through a solenoid valve 15, and is further connected to the first heat exchanger 4 through a top connection pipe 3-1 and a second connection pipe 3-4 of the four-way valve 3, and the other end of the first compressor is connected to the second heat exchanger 5 through a middle connection pipe 3-3 and a first connection pipe 3-2 of the four-way valve, and is further connected to the other end of the second compressor through a solenoid valve 16.
One end of the second compressor 2 is connected to one end of the second heat exchanger 5 through the solenoid valve 17 and the solenoid valve 13, and the other end of the second compressor 2 is connected to one end of the first heat exchanger 4 through the solenoid valve 14.
One end of the third sub heat exchanger 4-1 is connected with one end of the fourth sub heat exchanger 4-2 through an electromagnetic valve 9, and the other end of the third sub heat exchanger 4-1 is connected with the other end of the fourth sub heat exchanger 4-2 through an electromagnetic valve 10.
One end of the first sub heat exchanger 5-1 is connected with one end of the second sub heat exchanger 5-2 through a solenoid valve 12, and the other end of the first sub heat exchanger 5-1 is connected with the other end of the second sub heat exchanger 5-2 through a solenoid valve 11 and a second expansion valve 8, respectively. The other end of the second sub heat exchanger 5-2 is connected to the other end of the third sub heat exchanger 4-1 through a third expansion valve 6, and is also connected to the other end of the fourth sub heat exchanger 4-2 through a first expansion valve 77.
Fig. 2 is a flow chart of the cooling medium in the normal heating mode. The electromagnetic valve 13, the electromagnetic valve 14 and the electromagnetic valve 7 are closed, and the third electronic expansion valve 6 and the second electronic expansion valve 8 are adjusted to 0 step.
The flow direction steps are as follows: the refrigerant in the first and second compressors 1 and 2 flows into the third and fourth sub heat exchangers 4-1 and 4-2 through the top connection pipe 3-1 and 3-4 of the four-way valve, is condensed to release heat in the third and fourth sub heat exchangers 4-1 and 4-2, is then reduced in pressure by throttling of the first expansion valve 7 to enter the first and second sub heat exchangers 5-1 and 5-2, is evaporated to absorb heat in the first and second sub heat exchangers 5-1 and 5-2, and finally returns to the other ends of the first and second compressors 1 and 2 through the first and intermediate connection pipes 3-2 and 3-3 of the four-way valve, thereby completing a heating cycle.
Fig. 3 is a flow diagram of a refrigeration medium in an uninterrupted defrosting mode. In the uninterrupted defrosting mode, the electromagnetic valve 11, the electromagnetic valve 12, the electromagnetic valve 14 and the electromagnetic valve 15 are closed, the third expansion valve 6 is adjusted to be in 0 step, other electromagnetic valves are opened, and the number of steps of other electromagnetic valves is not 0.
The flow direction steps are as follows: the refrigerant in the first compressor 1 flows into the third and fourth sub heat exchangers 4-1 and 4-2 through the top connection pipe 3-1 and 3-4 of the four-way valve, is condensed to release heat in the third and fourth sub heat exchangers 4-1 and 4-2, is reduced in pressure through the throttling of the first expansion valve 7, enters the second sub heat exchanger 5-2, is evaporated to absorb heat in the second sub heat exchanger 5-2, and finally returns to the other end of the first compressor 1 through the first connection pipe 3-2 and the middle connection pipe 3-3 of the four-way valve, thereby completing one round of heating cycle.
The refrigerating medium in the second compressor 2 enters the first sub heat exchanger 5-1 through the electromagnetic valve 17 and the electromagnetic valve 13, is condensed and releases heat in the first sub heat exchanger 5-1, then enters the second sub heat exchanger 5-2 through throttling and pressure reduction of the second expansion valve 8, is evaporated and absorbs heat in the second sub heat exchanger 5-2, and finally returns to the other end of the second compressor 2 through the first connecting pipe 3-2 and the middle connecting pipe 3-3 of the four-way valve, so that a cycle of defrosting circulation is completed.
Fig. 4 is a refrigerant flow diagram for the two-temperature refrigeration mode. In the uninterrupted defrosting mode, the electromagnetic valves 9, 10, 13, 16 and 17 are closed. The second electronic expansion valve 8 is adjusted to 0 step, the other solenoid valves are opened, and the number of steps of the other solenoid valves is not 0.
The refrigerant in the second compressor 2 is mixed with the refrigerant in the first compressor 1 through the solenoid valve 15, and then the refrigerant enters the first sub heat exchanger 5-1 and the second sub heat exchanger 5-2 through the top connection pipe 3-1 and the first connection pipe 3-2 of the four-way valve, and is condensed to release heat in the first sub heat exchanger 5-1 and the second sub heat exchanger 5-2, and then is divided into two parts, one of which enters the third sub heat exchanger 4-1 through the third expansion valve 6, is subjected to first temperature refrigeration in the third sub heat exchanger 4-1, and returns to the other end of the first compressor 1 through the second connection pipe 3-4 and the intermediate connection pipe 3-3 of the four-way valve, completing a first temperature refrigeration cycle, and the other of which enters the fourth sub heat exchanger 4-2 through the first expansion valve 7, the second temperature refrigeration is performed in the fourth sub heat exchanger 4-2 and then returned to the other end of the second compressor 2 through the solenoid valve 14, completing the second temperature refrigeration. Wherein the temperature value of the first temperature is higher than the temperature value of the second temperature.
This application adopts two compressors to inhale two carminative modes of gas, and two compressors possess two condensing pressure and two evaporating pressure, can realize incessant defrosting mode and two temperature refrigeration modes in one set of device.
The embodiment of the application also provides a defrosting method which can be applied to the controller and used for controlling the exchanger to defrost while heating. As shown in fig. 5, the specific steps are as follows.
Step 501: a portion of the refrigerant medium in the compressor is controlled to sequentially pass through the first heat exchanger and the second heat exchanger to perform a heat-releasing operation in the first heat exchanger and a heat-absorbing operation in the second heat exchanger.
Wherein the target temperature of the environment in which the first heat exchanger is located is higher than the ambient temperature of the environment in which the second heat exchanger is located.
In the embodiment of the present application, during the heating process, the first heat exchanger is in an indoor environment, the second heat exchanger is in an outdoor environment, and the target temperature of the environment in which the first heat exchanger is located is higher than the environment temperature of the environment in which the second heat exchanger is located, so that the condensation heat release of the refrigerant medium through the first heat exchanger is required to reach the target temperature, and the evaporation heat absorption of the refrigerant medium through the second heat exchanger is also required to form the flow cycle.
The controller controls a part of the refrigerating medium in the compressor to pass through the first heat exchanger, condensation heat release is carried out in the first heat exchanger, then the refrigerating medium after condensation heat release passes through the second heat exchanger, evaporation heat absorption is carried out in the second heat exchanger, and a heating cycle is formed.
Step 502: and controlling another part of the refrigerating medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger so as to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger.
In the embodiment of the application, the controller controls another part of the refrigeration medium in the compressor to pass through the first sub heat exchanger in the second heat exchanger, condensation heat release is carried out in the first sub heat exchanger, then the refrigeration medium after condensation heat release passes through the second sub heat exchanger, and evaporation heat absorption is carried out in the second sub heat exchanger, so that a defrosting cycle is formed.
This application is through making the refrigeration medium carry out continuous heat absorption and heat release in the second heat exchanger, avoids the second heat exchanger to be in the low temperature state for a long time, and it is too big with ambient temperature phase difference to cause the frost, influences the heat exchange of second heat exchanger. This application need not to reduce indoor temperature, has still improved the heat exchange rate of second heat exchanger.
As an alternative embodiment, the compressor includes a first compressor and a second compressor, and controlling a portion of the refrigeration medium in the compressor to sequentially pass through the first heat exchanger and the second heat exchanger includes: controlling the refrigeration medium in the first compressor to sequentially pass through the first heat exchanger and the second heat exchanger; controlling another part of the refrigeration medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger comprises the following steps: and controlling the refrigerating medium in the second compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger. The condensing pressure of the first compressor is large and used for completing a heating cycle, and the condensing pressure of the second compressor is small and used for completing a defrosting cycle.
In this embodiment, the compressor includes a first compressor and a second compressor, the controller controls the refrigeration medium in the first compressor to sequentially pass through the first heat exchanger and the second heat exchanger to complete the heating cycle, and the controller controls the refrigeration medium in the second compressor to sequentially pass through the first heat exchanger and the second heat exchanger in the second heat exchanger to complete the defrosting cycle.
As an alternative embodiment, controlling a portion of the refrigerant medium in the compressor to sequentially pass through the first heat exchanger and the second heat exchanger to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger includes: controlling a refrigerant medium in a first compressor to enter a first heat exchanger through a multi-way valve to perform a heat releasing operation in the first heat exchanger, wherein the multi-way valve is used for controlling the first heat exchanger to perform the heat releasing operation; the refrigerant medium after the heat-releasing operation is controlled to enter the second heat exchanger through the first expansion valve to perform a heat-absorbing operation in the second heat exchanger.
The first expansion valve is used for throttling and depressurizing the refrigerating medium output from the first heat exchanger, and the controller controls the refrigerating medium subjected to the heat absorption operation to return to the first compressor through the multi-way valve.
The controller controls the refrigerant in the first compressor to enter the first heat exchanger through the multi-way valve, and the multi-way valve can control the first heat exchanger to perform heat release operation through the piston pressure difference and movement inside the multi-way valve. The controller controls the refrigeration medium subjected to heat release operation to enter the second heat exchanger through the first expansion valve, the first expansion valve enables the medium-temperature high-pressure liquid refrigeration medium to be throttled into low-temperature low-pressure wet steam through the first expansion valve, the low-temperature low-pressure refrigeration medium is evaporated and absorbs heat in the second sub-heat exchanger, the refrigeration medium subjected to evaporation and heat absorption returns to the first compressor through the multi-way valve, and then continuous heat release and heat absorption processes are performed.
The first expansion valve continuously converts the medium temperature and high pressure into low temperature and low pressure, so that the medium can circulate. The first expansion valve can also automatically adjust the flow rate entering the heat exchanger to keep the temperature of the heat exchanger stable.
As an alternative embodiment, the multi-way valve is a four-way valve, and controlling the refrigerant medium in the first compressor to enter the first heat exchanger through the multi-way valve to perform a heat releasing operation in the first heat exchanger comprises: controlling a refrigerating medium in the first compressor to enter a top connecting pipe of the four-way valve; the refrigerant is controlled to enter the first heat exchanger through the second connection pipe of the four-way valve to perform a heat-releasing operation in the first heat exchanger.
In an embodiment of the present application, the multi-way valve is a four-way valve, the four-way valve includes a top connection pipe and a bottom connection device, and the bottom connection device includes a first connection pipe, a second connection pipe, and an intermediate connection pipe located between the first connection pipe and the second connection pipe. The controller controls the refrigerant in the first compressor to enter the top connecting pipe of the four-way valve, then the refrigerant enters the first heat exchanger through the second connecting pipe, the refrigerant in the piston cavity of the second connecting pipe is discharged, because of the pressure difference existing at the two ends of the piston, the piston and the main slide valve move to the right, the exhaust pipe is communicated with the first heat exchanger, and the other two connecting pipes are communicated to form a heating cycle.
As an alternative embodiment, the multi-way valve is a four-way valve, and controlling the refrigerant medium after performing the heat absorption operation to return to the first compressor through the multi-way valve comprises: controlling the refrigeration medium subjected to heat absorption operation to enter a first connecting pipe of the four-way valve; the refrigerant medium is controlled to return to the first compressor from the intermediate connection pipe of the four-way valve.
In this embodiment, the multi-way valve is a four-way valve, and the controller controls the refrigerant after performing the heat absorption operation to enter the first connection pipe of the four-way valve, and then controls the refrigerant to return to the first compressor from the middle connection pipe of the four-way valve, so as to form a defrosting cycle.
As an alternative embodiment, controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform the heat releasing operation in the first sub heat exchanger and the heat absorbing operation in the second sub heat exchanger includes: controlling a refrigerant medium in the second compressor to enter the first sub heat exchanger to perform a heat releasing operation in the first sub heat exchanger; controlling the refrigeration medium subjected to the heat release operation to enter a second sub heat exchanger through a second expansion valve so as to perform heat absorption operation in the second sub heat exchanger, wherein the second expansion valve is used for throttling and depressurizing the refrigeration medium output from the first sub heat exchanger; the refrigerant medium after the heat absorption operation is controlled to return to the second compressor through the multi-way valve.
In this embodiment, the controller controls the refrigerant in the second compressor to enter the first heat sub-exchanger, and controls the refrigerant to perform a heat releasing operation in the second heat sub-exchanger, the refrigerant after performing the heat releasing operation enters the second heat sub-exchanger through the second expansion valve, the second expansion valve throttles and reduces the pressure of the refrigerant after performing the heat releasing operation in the first heat sub-exchanger to become low-temperature and low-pressure wet steam, the refrigerant after throttled and reduced pressure enters the second heat sub-exchanger, evaporates and absorbs heat in the second heat sub-exchanger, and then controls the refrigerant after performing the heat absorbing operation to return to the second compressor through the multi-way valve.
Based on the same technical concept, the embodiment of the present application further provides a defrosting apparatus, as shown in fig. 6, the apparatus includes:
a first control module 601, configured to control a portion of the refrigerant in the compressor to sequentially pass through the first heat exchanger and the second heat exchanger to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger, where a target temperature of an environment in which the first heat exchanger is located is higher than an environment temperature of an environment in which the second heat exchanger is located;
and a second control module 602 for controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger.
Optionally, the compressor comprises a first compressor and a second compressor,
the first control module 601 includes:
the first control unit is used for controlling the refrigeration medium in the first compressor to sequentially pass through the first heat exchanger and the second heat exchanger;
the second control module 602 includes:
and the second control unit is used for controlling the refrigerating medium in the second compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger.
Optionally, the first control module 601:
a third control unit for controlling a refrigerant in the first compressor to enter the first heat exchanger through the multi-way valve to perform a heat releasing operation in the first heat exchanger, wherein the multi-way valve is used for controlling the first heat exchanger to perform the heat releasing operation;
a fourth control unit for controlling the refrigerant after the heat releasing operation to enter the second heat exchanger through the first expansion valve for performing a heat absorbing operation in the second heat exchanger, wherein the first expansion valve is used for throttling and depressurizing the refrigerant output from the first heat exchanger;
and the fifth control unit is used for controlling the refrigeration medium after the heat absorption operation to return to the first compressor through the multi-way valve.
Optionally, the multiway valve is a four-way valve, and the third control unit includes:
the first control subunit is used for controlling the refrigerant in the first compressor to enter a top connecting pipe of the four-way valve;
and a second control subunit for controlling the refrigerant to enter the first heat exchanger through the second connection pipe of the four-way valve to perform a heat releasing operation in the first heat exchanger.
Optionally, the multi-way valve is a four-way valve, and the fifth control unit includes:
the third control subunit is used for controlling the refrigeration medium subjected to the heat absorption operation to enter the first connecting pipe of the four-way valve;
and a fourth control subunit for controlling the refrigerant medium to return to the first compressor from the intermediate connection pipe of the four-way valve.
Optionally, the first control module 601 includes:
a sixth control unit for controlling the refrigerant medium in the second compressor to enter the first sub heat exchanger to perform a heat releasing operation in the first sub heat exchanger;
a seventh control unit for controlling the refrigerant after the heat releasing operation to enter the second sub heat exchanger through a second expansion valve for performing a heat absorbing operation in the second sub heat exchanger, wherein the second expansion valve is used for throttling and depressurizing the refrigerant output from the first sub heat exchanger;
and an eighth control unit for controlling the refrigerant after the heat absorption operation to return to the second compressor through the multi-way valve.
Based on the same technical concept, an embodiment of the present invention further provides an electronic device, as shown in fig. 7, including a processor 701, a communication interface 702, a memory 703 and a communication bus 704, where the processor 701, the communication interface 702, and the memory 703 complete mutual communication through the communication bus 704,
a memory 703 for storing a computer program;
the processor 701 is configured to implement the above steps when executing the program stored in the memory 703.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
In a further embodiment provided by the present invention, there is also provided a computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the steps of any of the methods described above.
In a further embodiment provided by the present invention, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform any of the methods of the above embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A temperature control apparatus, characterized in that the apparatus comprises: a compressor, a multiplex valve, a first heat exchanger, and a second heat exchanger, wherein,
the compressor is respectively connected with the multi-way valve, the first heat exchanger and the second heat exchanger and is used for finishing temperature control;
the multi-way valve is respectively connected with the first heat exchanger and the second heat exchanger and is used for controlling the first heat exchanger and the second heat exchanger to carry out heat absorption or heat release operation;
the first heat exchanger is connected with the second heat exchanger and is used for performing heat releasing operation in a heating cycle and performing heat absorbing operation in a cooling cycle;
the second heat exchanger is used for performing heat release and heat absorption operations in a defrosting cycle and performing heat release operations in a refrigerating cycle;
the multi-way valve is a four-way valve, and the second heat exchanger comprises a first sub-heat exchanger and a second sub-heat exchanger in the heating cycle and the defrosting cycle; the compressor comprises a first compressor and a second compressor, and the first compressor and the second compressor have different condensation pressure and evaporation pressure;
one end of the first compressor is connected with one end of the second heat sub-exchanger through the four-way valve and the first heat exchanger, and the other end of the first compressor is connected with the other end of the second heat sub-exchanger through the four-way valve so as to complete a heating cycle;
one end of the second compressor is connected with one end of the second sub heat exchanger through the first sub heat exchanger, and the other end of the second compressor is connected with the other end of the second sub heat exchanger through the four-way valve so as to complete defrosting circulation;
wherein, in the refrigeration cycle, the first heat exchanger includes a third sub-heat exchanger and a fourth sub-heat exchanger;
one end of the first compressor is connected with one end of the third sub heat exchanger and one end of the fourth sub heat exchanger through the four-way valve and the second heat exchanger respectively, the other end of the third sub heat exchanger is connected with the other end of the first compressor through the four-way valve to finish a first temperature refrigeration cycle, the other end of the fourth sub heat exchanger is connected with the other end of the second compressor to finish a second temperature refrigeration cycle, and the temperature value of the second temperature is lower than that of the first temperature.
2. The apparatus of claim 1, wherein the four-way valve comprises a top connection pipe and a bottom connection device, the bottom connection device comprising a first connection pipe, a second connection pipe, and an intermediate connection pipe between the first connection pipe and the second connection pipe;
the top connecting pipe and the middle connecting pipe are respectively connected with the compressor, the first connecting pipe is connected with the second heat exchanger, and the second connecting pipe is connected with the first heat exchanger.
3. The apparatus of claim 2,
one end of the first compressor is connected with a top connecting pipe of the four-way valve, and a second connecting pipe of the four-way valve is connected with one end of the first heat exchanger, so that the heat release operation of a refrigerating medium in the first heat exchanger is controlled through the second connecting pipe;
the second sub heat exchanger is connected with a first connecting pipe of the four-way valve, and the middle connecting pipe is connected with the other end of the first compressor.
4. The apparatus of claim 2,
the other end of the first heat exchanger is connected with the second heat sub-exchanger through a first expansion valve, wherein the first expansion valve is used for throttling and depressurizing the refrigeration medium subjected to heat release operation in the first heat exchanger, so that the throttling and depressurizing refrigeration medium enters the second heat sub-exchanger.
5. The apparatus of claim 2,
one end of the second compressor is connected with one end of the first sub heat exchanger, and the other end of the first sub heat exchanger is connected with one end of the second sub heat exchanger through a second expansion valve, wherein the second expansion valve is used for throttling and depressurizing the refrigeration medium subjected to heat release operation in the first sub heat exchanger, so that the throttled and depressurized refrigeration medium enters the second sub heat exchanger.
6. A defrosting and double-temperature refrigerating method of a temperature control device is characterized by comprising the following steps:
in the defrosting method, a part of refrigeration medium in a compressor is controlled to sequentially pass through a first heat exchanger and a second heat exchanger so as to perform heat releasing operation in the first heat exchanger and heat absorbing operation in the second heat exchanger, wherein the compressor is respectively connected with a multi-way valve, the first heat exchanger and the second heat exchanger, the multi-way valve is respectively connected with the first heat exchanger and the second heat exchanger, the first heat exchanger is connected with the second heat exchanger, the multi-way valve is a four-way valve, and the target temperature of the environment where the first heat exchanger is located is higher than the environment temperature of the environment where the second heat exchanger is located;
controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger
Wherein, the compressor includes first compressor and second compressor, the control compressor partly refrigerant medium loops through first heat exchanger and second heat exchanger and includes: controlling a refrigerating medium in the first compressor to sequentially pass through a first heat exchanger and a second heat exchanger, wherein one end of the first compressor is connected with one end of the second heat exchanger through the four-way valve and the first heat exchanger, and the other end of the first compressor is connected with the other end of the second heat exchanger through the four-way valve;
the controlling of the other part of the refrigeration medium in the compressor to sequentially pass through the first sub heat exchanger and the second sub heat exchanger in the second heat exchanger includes: controlling a refrigeration medium in the second compressor to sequentially pass through a first sub heat exchanger and a second sub heat exchanger in the second heat exchanger, wherein one end of the second compressor is connected with one end of the second sub heat exchanger through the first sub heat exchanger, and the other end of the second compressor is connected with the other end of the second sub heat exchanger through the four-way valve;
in the dual temperature refrigeration process, the first heat exchanger comprises a third sub-heat exchanger and a fourth sub-heat exchanger;
controlling the evaporation medium to perform heat release operation in the second heat exchanger;
and controlling the evaporation medium to perform evaporation heat absorption at a second temperature in the fourth sub heat exchanger to complete the refrigeration cycle at the second temperature, and controlling the evaporation medium to perform evaporation heat absorption at a first temperature in the third sub heat exchanger to complete the refrigeration cycle at the first temperature, wherein one end of the first compressor is connected with one end of the third sub heat exchanger and one end of the fourth sub heat exchanger through the four-way valve and the second heat exchanger respectively, the other end of the third sub heat exchanger is connected with the other end of the first compressor through the four-way valve, and the other end of the fourth sub heat exchanger is connected with the other end of the second compressor.
7. The method as claimed in claim 6, wherein said controlling a portion of the refrigerant medium in the compressor to pass through the first heat exchanger and the second heat exchanger in sequence to perform a heat releasing operation in the first heat exchanger and a heat absorbing operation in the second heat exchanger comprises:
controlling a refrigerant medium in the first compressor to enter the first heat exchanger through a multi-way valve to perform a heat releasing operation in the first heat exchanger, wherein the multi-way valve is used for controlling the first heat exchanger to perform the heat releasing operation;
controlling the refrigerant after the heat releasing operation to enter the second heat exchanger through a first expansion valve to perform a heat absorbing operation in the second heat exchanger, wherein the first expansion valve is used for throttling and depressurizing the refrigerant output from the first heat exchanger;
and controlling the refrigerant after the heat absorption operation to return to the first compressor through the multi-way valve.
8. The method of claim 7, wherein the multiplex valve is a four-way valve, and wherein controlling the refrigerant medium in the first compressor to enter the first heat exchanger through the multiplex valve to perform a heat-rejection operation in the first heat exchanger comprises:
controlling the refrigerant in the first compressor to enter a top connecting pipe of the four-way valve;
controlling the refrigerant medium to enter the first heat exchanger through a second connection pipe of the four-way valve to perform a heat-releasing operation in the first heat exchanger.
9. The method as claimed in claim 7, wherein the multi-way valve is a four-way valve, and the controlling of the refrigerant medium after the heat absorption operation to return to the first compressor through the multi-way valve comprises:
controlling the refrigeration medium subjected to heat absorption operation to enter a first connecting pipe of the four-way valve;
controlling the refrigerant medium to return to the first compressor from an intermediate connection pipe of the four-way valve.
10. The method as claimed in claim 7, wherein said controlling another portion of the refrigerant medium in the compressor to sequentially pass through the first and second sub heat exchangers in the second heat exchanger to perform a heat releasing operation in the first sub heat exchanger and a heat absorbing operation in the second sub heat exchanger comprises:
controlling a refrigerant medium in the second compressor to enter the first sub heat exchanger to perform a heat releasing operation in the first sub heat exchanger;
controlling the refrigerant after the heat releasing operation to enter the second sub heat exchanger through a second expansion valve to perform a heat absorbing operation in the second sub heat exchanger, wherein the second expansion valve is used for throttling and depressurizing the refrigerant output from the first sub heat exchanger;
and controlling the refrigerant after the heat absorption operation to return to the second compressor through the multi-way valve.
11. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the method of any one of claims 6 to 10 when executing a program stored in the memory.
12. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 6 to 10.
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| KR100388675B1 (en) * | 2000-12-18 | 2003-06-25 | 삼성전자주식회사 | Air conditioner having pressure controlling unit and its control method |
| CN100592007C (en) * | 2008-10-21 | 2010-02-24 | 中南大学 | Air source heat pump type air conditioner and its defrosting method |
| CN102635969A (en) * | 2012-04-11 | 2012-08-15 | 广东美的制冷设备有限公司 | Air conditioner |
| JP6320568B2 (en) * | 2015-01-13 | 2018-05-09 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN104728951B (en) * | 2015-04-13 | 2017-09-12 | 宁波奥克斯电气股份有限公司 | The outdoor unit modules of multi-connected machine and the method for being heated and being defrosted simultaneously using the module |
| CN105222436A (en) * | 2015-09-21 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN206094356U (en) * | 2016-09-08 | 2017-04-12 | 南通华信中央空调有限公司 | High -efficient fresh air dehumidification machine based on heat pump heat recovery and double evaporation temperature |
| JP6917583B2 (en) * | 2017-04-05 | 2021-08-11 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
| CN109442793A (en) * | 2018-11-21 | 2019-03-08 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioning defrosting system and air-conditioning system |
| CN110195921B (en) * | 2019-06-06 | 2020-12-18 | 珠海格力电器股份有限公司 | Defrosting control method and device capable of continuously heating, air conditioning unit and equipment |
| CN210718195U (en) * | 2019-09-06 | 2020-06-09 | 江森自控日立万宝压缩机（广州）有限公司 | Combined low-temperature refrigerating system |
| CN212274312U (en) * | 2020-09-16 | 2021-01-01 | 珠海格力电器股份有限公司 | Temperature control equipment |
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