CN115218362A - Air supplementing control method and device for air conditioner, air conditioner and storage medium - Google Patents
Air supplementing control method and device for air conditioner, air conditioner and storage medium Download PDFInfo
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- CN115218362A CN115218362A CN202110440651.2A CN202110440651A CN115218362A CN 115218362 A CN115218362 A CN 115218362A CN 202110440651 A CN202110440651 A CN 202110440651A CN 115218362 A CN115218362 A CN 115218362A
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- 238000000034 method Methods 0.000 title claims abstract description 77
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 348
- 239000007788 liquid Substances 0.000 claims abstract description 143
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 238000001704 evaporation Methods 0.000 claims abstract description 37
- 230000008020 evaporation Effects 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 28
- 239000013589 supplement Substances 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 22
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005191 phase separation Methods 0.000 abstract description 3
- 239000012071 phase Substances 0.000 description 104
- 238000001816 cooling Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 8
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- 230000009467 reduction Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F25B31/00—Compressor arrangements
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses an air supplementing control method and device for an air conditioner, the air conditioner and a storage medium, wherein the method comprises the following steps: when the air conditioner is in an operating state, a phase separator of the air conditioner is controlled to separate gaseous refrigerants and liquid refrigerants generated in an evaporation heat exchange process, when the current mode of the air conditioner is a heating mode, the current environment temperature is obtained, when the current environment temperature is smaller than or equal to a preset temperature threshold value, the phase separator is controlled to convey the separated gaseous refrigerants to a compressor return air port through a gaseous refrigerant outlet, so that the large cost is not increased, the suction pressure of an air conditioner system is improved on the premise that the liquid refrigerants are prevented from returning to the compressor to cause liquid-carrying compression to damage the compressor, the system circulation quantity is increased, meanwhile, gas-liquid two-phase separation is achieved, the system resistance can be effectively reduced, the frosting period is prolonged, the heating quantity is increased, and a better heating effect is achieved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air supply control method and device of an air conditioner, the air conditioner and a storage medium.
Background
Among the current air conditioner, when heating under the lower condition of ambient temperature, because suction pressure is lower, refrigerant volume circulation efficiency is low in the system, and the refrigerant velocity of flow is low, leads to the heat exchange efficiency step-down, and the effect of heating is very low to influence the travelling comfort of air conditioner and user's experience effect.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an air supplementing control method and device of an air conditioner, the air conditioner and a storage medium, and aims to solve the technical problem that in the prior art, when heating is carried out under the condition of low environmental temperature, the heating effect is poor.
In order to achieve the above object, the present invention provides a method for controlling air supply of an air conditioner, the air conditioner comprising: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port; the air supply control method of the air conditioner comprises the following steps:
when the air conditioner is in an operating state, controlling the phase separator to separate gaseous refrigerants and liquid refrigerants generated in the evaporation heat exchange process;
when the current mode of the air conditioner is a heating mode, acquiring the current environment temperature;
and when the current ambient temperature is less than or equal to a preset temperature threshold value, controlling the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
Optionally, the air conditioner further includes an electromagnetic valve disposed between the gaseous refrigerant outlet and the compressor return air port;
when the current ambient temperature is less than or equal to a preset temperature threshold value, the phase separator is controlled to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet, and the method comprises the following steps:
and when the current environment temperature is less than or equal to a preset temperature threshold value, controlling the electromagnetic valve to be electrified and conducted so as to enable the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
Optionally, when the current mode of the air conditioner is a heating mode, after acquiring the current ambient temperature, the method further includes:
and when the current environment temperature is greater than a preset temperature threshold value, controlling the electromagnetic valve to be powered off and closed so as to block the gaseous refrigerant separated by the phase separator.
Optionally, the compressor includes a compressor muffler, the compressor muffler is provided with the compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port through a first pipeline;
the controlling the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet includes:
and controlling the phase separator to convey the separated gaseous refrigerant to the first pipeline from the gaseous refrigerant outlet, and conveying the separated gaseous refrigerant to the compressor return air port through the first pipeline.
Optionally, the air conditioner further includes a heat exchanger, and the phase separator further includes a liquid refrigerant outlet;
when the air conditioner is in an operating state, after controlling the phase separator to separate a gaseous refrigerant and a liquid refrigerant generated in an evaporation heat exchange process, the method further comprises the following steps:
controlling the phase separator to convey the separated liquid refrigerant to an inlet of the heat exchanger through the liquid refrigerant outlet;
controlling the heat exchanger to perform heat exchange treatment on the input liquid refrigerant to obtain a gas refrigerant to be compressed, and conveying the gas refrigerant to be compressed to the compressor;
and controlling the compressor to compress the gaseous refrigerant to be compressed.
Optionally, the liquid refrigerant outlet is communicated with the inlet of the heat exchanger through a second pipeline;
the controlling the phase separator to convey the separated liquid refrigerant to the inlet of the heat exchanger through the liquid refrigerant outlet includes:
and controlling the phase separator to convey the separated liquid refrigerant to the second pipeline from the liquid refrigerant outlet, and conveying the separated liquid refrigerant to the inlet of the heat exchanger through the second pipeline.
Optionally, the phase separator further includes a gas-liquid two-phase refrigerant inlet;
when the air conditioner is in an operating state, the phase separator is controlled to separate gaseous refrigerant and liquid refrigerant generated in the evaporation heat exchange process, and the method comprises the following steps:
when the air conditioner is in an operating state, controlling a heat exchanger to perform heat exchange treatment, and conveying a gaseous refrigerant and a liquid refrigerant generated in the evaporation heat exchange process to the gas-liquid two-phase refrigerant inlet through an outlet of the heat exchanger;
and controlling the phase separator to separate the input gaseous refrigerant and liquid refrigerant.
In addition, in order to achieve the above object, the present invention further provides an air supply control device of an air conditioner, including:
the refrigerant separation module is used for controlling the phase separator to separate gaseous refrigerants and liquid refrigerants generated in the evaporation heat exchange process when the air conditioner is in the running state;
the environment temperature module is used for acquiring the current environment temperature when the current mode of the air conditioner is a heating mode;
and the air supplement control module is used for controlling the phase separator to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet when the current ambient temperature is less than or equal to a preset temperature threshold value.
In addition, to achieve the above object, the present invention also provides an air conditioner including: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port; the air conditioner further includes: the air supply control program of the air conditioner is executed by the processor to realize the air supply control method of the air conditioner.
In addition, in order to achieve the above object, the present invention further provides a storage medium, where an air supply control program of an air conditioner is stored, and when the air supply control program of the air conditioner is executed by a processor, the air supply control method of the air conditioner is implemented.
The air supplement control method of the air conditioner provided by the invention has the advantages that when the air conditioner is in an operating state, the phase separator of the air conditioner is controlled to separate gaseous refrigerant and liquid refrigerant generated in the evaporation heat exchange process, when the current mode of the air conditioner is a heating mode, the current environment temperature is obtained, and when the current environment temperature is less than or equal to a preset temperature threshold value, the phase separator is controlled to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet, so that the suction pressure of the air conditioner system is increased, the system circulation is increased, and meanwhile, the gas phase and the liquid phase are separated, the system resistance can be effectively reduced, the frosting period is prolonged, the heating quantity is increased, and the better heating effect is achieved.
Drawings
FIG. 1 is a schematic diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for controlling air make-up of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic view of an air conditioner system according to an embodiment of the air make-up control method of the air conditioner of the present invention;
FIG. 4 is a flowchart illustrating a method for controlling air make-up of an air conditioner according to a second embodiment of the present invention;
FIG. 5 is a schematic flowchart illustrating a method for controlling air make-up of an air conditioner according to a third embodiment of the present invention;
FIG. 6 is a functional block diagram of a first embodiment of an air make-up control device of an air conditioner in accordance with the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 1 | |
2 | Four- |
| 3 | Evaporator with a |
4 | |
| 5 | |
6 | |
| 7 | |
8 | |
| 9 | |
10 | |
| 61 | Gas-liquid two- |
62 | |
| 63 | Gaseous refrigerant outlet | A | Air return port of compressor |
| B | Outlet of heat exchanger | C | Inlet of heat exchanger |
| D | Another outlet of the heat exchanger | G1 | First pipeline |
| G2 | Second pipeline | G3 | Third pipeline |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port; the air conditioner may further include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may comprise a Display screen (Display), an input unit such as keys, and the optional user interface 1003 may also comprise a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., a WI-FI interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a non-volatile Memory (e.g., a magnetic disk Memory). The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the configuration of the apparatus shown in fig. 1 does not constitute a limitation of an air conditioner, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a supplementary air control program of an air conditioner.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for connecting an external network and performing data communication with other network devices; the user interface 1003 is mainly used for connecting to a user equipment and performing data communication with the user equipment; the air supply control program of the air conditioner stored in the memory 1005 is called by the device of the present invention through the processor 1001, and the air supply control method of the air conditioner provided by the embodiment of the present invention is executed.
Based on the hardware structure, the embodiment of the air supplement control method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a flow chart illustrating a method for controlling air make-up of an air conditioner according to a first embodiment of the present invention.
In a first embodiment, the air conditioner includes: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port; the air supply control method of the air conditioner comprises the following steps:
and S10, controlling the phase separator to separate gaseous refrigerants and liquid refrigerants generated in the evaporation heat exchange process when the air conditioner is in the running state.
It should be noted that the execution main body of the embodiment may be an air conditioner, such as a cabinet air conditioner or a wall air conditioner, or may be another type of air conditioner.
It should be understood that although the air make-up scheme of the air conditioner also exists in the prior art, in the existing system with air make-up and enthalpy increase, a vaporizer or an economizer and a compressor with air make-up are required to be added, and the cost is high. In some existing systems which directly supplement a muffler with a liquid refrigerant, although the system can play a role in increasing the pressure of the back air, the power consumption is greatly increased, and meanwhile, the compressor is compressed with liquid, so that the compressor is easily damaged.
The technical scheme of the embodiment is different from the prior art, and the phase separator is added on the basis of the prior air conditioner and plays a role in separating gas and liquid phases according to the special structure of the phase separator. The phase separator consists of 3 interfaces and a body, wherein the 3 interfaces are respectively a gas-liquid two-phase refrigerant inlet, a liquid refrigerant outlet and a gaseous refrigerant outlet.
In the air conditioner system, there are a plurality of components, and the functions of these components are as follows: a compressor, an air conditioning system heart, compressing and conveying a refrigerant; the four-way valve is used for realizing the switching between refrigeration and heating; the condenser is used as a condenser for cooling the refrigerant and as an evaporation end for absorbing heat of the refrigerant during heating; the outer fan drives outdoor air to pass through the heat exchanger, so as to play a role in reinforcing heat absorption or heat release; the inner fan drives indoor air to pass through the heat exchanger, so that the effect of reinforcing heat absorption or heat release is achieved; the phase separator plays a role in separating gas and liquid phases according to a special structure; the electromagnetic valve plays a role in circulating and blocking the refrigerant in the pipeline as required; the throttling device and the throttling component play a role in reducing pressure and temperature in the system.
In a specific implementation, as shown in fig. 3, fig. 3 is a schematic diagram of an air conditioner system, where the air conditioner system in this embodiment includes an indoor side and an outdoor side, where the indoor side includes: evaporator 7 and interior fan 3, the outdoor side includes: compressor 1, throttle valve 9, filter 8, heat exchanger 4, outer fan 5, phase separator 6, four-way valve 2 and solenoid valve 10. In the embodiment, the heat exchanger 4 is specifically set as a condenser, and both the evaporator and the condenser are heat exchangers, and perform different functions in the cooling mode and the heating mode. The phase separator in fig. 3 comprises three interfaces, respectively: a gaseous refrigerant outlet 63, a liquid refrigerant outlet 62, and a gas-liquid two-phase refrigerant inlet 61. The gas refrigerant outlet 63 is communicated with the return air port A of the compressor through a first pipeline G1, the liquid refrigerant outlet 62 is communicated with the inlet C of the heat exchanger 4 through a second pipeline G2, the gas-liquid two-phase refrigerant inlet 61 is communicated with the outlet B of the heat exchanger 4 through a third pipeline G3, and the other outlet D of the heat exchanger 4 is communicated with the four-way valve 2.
It can be understood that the operation principle of the air conditioner in the embodiment is as follows: when the system is used for refrigerating, gaseous refrigerants discharged by the compressor in a compressed mode pass through the four-way valve to the condenser, are subjected to heat dissipation and condensation processes, then are subjected to throttling, temperature reduction and pressure reduction in the throttling valve part, become low-pressure refrigerants, enter the evaporator to absorb heat for evaporation, then return to the compressor through the four-way valve to be compressed, and are circulated repeatedly. When the system heats, the gas refrigerant compressed by the compressor is directly cooled and condensed to the indoor side by reversing through the four-way valve, becomes high-pressure high-temperature liquid refrigerant, becomes low-temperature low-pressure liquid refrigerant by throttling through the throttling valve part, and then is evaporated and heat exchanged to the outdoor evaporation side. The evaporation side is provided with a phase separator at a certain position in the flow path design, so that a gaseous refrigerant and a liquid refrigerant which are generated in the evaporation heat exchange process are separated, the gaseous refrigerant is directly conveyed to a return air port of the compressor, the liquid refrigerant is input to an inlet of the evaporator for further heat exchange, and then the liquid refrigerant returns to the compressor through the four-way valve to be compressed again and repeatedly circulated.
In a specific implementation, as shown in fig. 3, fig. 3 shows a cooling direction of a refrigerant in a cooling mode and a heating direction of the refrigerant in a heating mode, where the cooling direction and the heating direction are both flow directions of the refrigerant, and the refrigerant includes a gaseous refrigerant and a liquid refrigerant, which are different forms of the refrigerant respectively. Since the solution of the present application mainly addresses the heating mode, taking the heating mode as an example, the refrigerant flow direction is: compressor → four-way valve → evaporator → throttle valve → filter tube → condenser → phase separator, the refrigerant is separated by the phase separator to obtain the gaseous refrigerant and liquid refrigerant after separation, the gaseous refrigerant is directly delivered to the compressor, the liquid refrigerant is delivered to the condenser → four-way valve → compressor.
It should be understood that, based on the above structural arrangement and operation principle, when the air conditioner is in operation at the start of operation, the phase separator may be controlled to separate the gaseous refrigerant and the liquid refrigerant generated in the evaporation heat exchange process to obtain the separated gaseous refrigerant and liquid refrigerant.
And step S20, when the current mode of the air conditioner is a heating mode, acquiring the current environment temperature.
It should be understood that, the solution of the present embodiment is mainly to supplement air to increase the air suction pressure and further increase the heating effect when heating at a lower ambient temperature. Therefore, it is necessary to perform two determinations, and first, it is determined whether the current mode of the air conditioner is the heating mode. When the current mode of the air conditioner is the heating mode, whether the ambient temperature is low is judged, which specifically includes: and obtaining the current environment temperature, and comparing the current environment temperature with a preset temperature threshold value to judge whether the environment temperature is lower. The preset temperature threshold may be set by a technician according to an actual situation, for example, the preset temperature threshold may be set to 7 ℃, and may also be set to other values, which is not limited in this embodiment.
It should be understood that the current ambient temperature in this embodiment may be the current ambient temperature of the indoor side, and may also be the current ambient temperature of the outdoor side, which is not limited in this embodiment.
In one embodiment, a temperature sensor may be provided in the air conditioner system at a suitable place on the indoor side or the outdoor side, and the ambient temperature is detected by the temperature sensor provided in the air conditioner system.
In another embodiment, an independent temperature sensor may be further disposed indoors or outdoors, the ambient temperature is detected by the temperature sensor, and the ambient temperature is sent to the controller of the air conditioner by way of wired or wireless communication, or the current ambient temperature may be detected by other ways, which is not limited in this embodiment.
And step S30, when the current ambient temperature is less than or equal to a preset temperature threshold value, controlling the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
It can be understood that when the current ambient temperature is less than or equal to the preset temperature threshold, that is, the current ambient temperature is less than or equal to 7 ℃, it indicates that air supplement is required at this time, and therefore, the phase separator may be controlled to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet to supplement air.
In a specific implementation, as shown in fig. 3, the gaseous refrigerant separated by the phase separator is delivered to the compressor return air port a through the gaseous refrigerant outlet 63, so as to deliver the gaseous refrigerant to the compressor.
It should be appreciated that the lower the temperature of the heating environment, the lower the system suction capacity, resulting in a reduced suction pressure, especially in severe frosting conditions where pressure decay is more pronounced. The phase separator is added in the system, so that the gas and the liquid after heat exchange of the condenser can be separated, wherein the gas part can be controlled by opening and conducting the electromagnetic valve, when the ambient temperature is lower than 7 ℃, the electromagnetic valve is electrified and conducted, and the gaseous refrigerant directly returns to the air return port of the compressor, so that the suction pressure of the system is improved, the circulation quantity of the system is increased, and meanwhile, the gas phase and the liquid phase are separated, so that the system resistance can be effectively reduced, the frosting period is prolonged, and the heating quantity is improved.
In addition, as an economizer and a throttling device are required to be added to the system with the air supplementing compressor, the cost is increased while the complexity of system control is increased, and the system can reduce the cost, simplify the system, supplement air and improve the heat exchange quantity by directly separating gas to the return air port of the compressor, thereby effectively solving the original problems. In addition, the invention can heat the air-absorbing medium by supplementing the gaseous refrigerant, thereby avoiding or reducing the situation that the liquid refrigerant returns to the compressor to cause the damage of the compressor due to liquid-carrying compression.
In this embodiment, carry out gas-liquid separation's mode through setting up the phase separator, not increasing great cost, and avoid liquid refrigerant to get back to the compressor and lead to taking under the prerequisite that liquid compression damaged the compressor, improve the suction pressure of air conditioner system, increase system circulation volume, the two-phase separation of gas-liquid simultaneously can effectively reduce the system resistance to the extension period that frosts promotes the heating capacity, has reached better heating effect.
In an embodiment, as shown in fig. 4, a second embodiment of the air make-up control method of the air conditioner according to the present invention is provided based on the first embodiment, and the air conditioner further includes an electromagnetic valve disposed between the gaseous refrigerant outlet and the return air port of the compressor; the step S30 includes:
and S301, when the current ambient temperature is less than or equal to a preset temperature threshold value, controlling the electromagnetic valve to be electrified and conducted so that the phase separator conveys the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
It should be understood that whether the separated gaseous refrigerant is delivered to the compressor return port can be controlled by providing a solenoid valve, and controlling the on/off state of the solenoid valve. The electromagnetic valve can be arranged on a pipeline between a gaseous refrigerant outlet and a return air port of the compressor, and the electromagnetic valve in the embodiment is conducted under the condition of power-on and closed under the condition of power-off.
In a specific implementation, the electromagnetic valve in this embodiment may adopt any one of a direct-acting electromagnetic valve, a pilot-operated electromagnetic valve, and a distributed direct-acting electromagnetic valve, and in addition to the above-mentioned several types of electromagnetic valves, other types of electromagnetic valves may also be included, and a technician may select and use an appropriate type of electromagnetic valve according to an actual air conditioner model or a use scenario, which is not limited in this embodiment. If a direct-acting electromagnetic valve is adopted, when the electromagnetic valve is electrified, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, the valve is opened, when the electromagnetic force disappears when the power is off, the spring presses the closing member on the valve seat, and the valve is closed. If a pilot type electromagnetic valve is adopted, when the pilot type electromagnetic valve is electrified, the pilot hole is opened by electromagnetic force, the pressure of the upper chamber is rapidly reduced, the pressure difference of low height and high height is formed around the closing member, the closing member is pushed to move upwards by fluid pressure, the valve is opened, when the power is off, the pilot hole is closed by spring force, the pressure of the inlet forms the pressure difference of low height and high height around the valve closing member by the rapid chamber of the bypass hole, and the closing member is pushed to move downwards by the fluid pressure to close the valve. If a distributed direct-acting electromagnetic valve is adopted, the distributed direct-acting electromagnetic valve comprises a pilot small valve and a main valve, the direct-acting principle and the pilot principle are combined to work, if the pressure difference between an inlet and an outlet of the electromagnetic valve is zero, a coil of the electromagnetic valve is electrified, and the electromagnetic force directly moves the pilot small valve and a closing member of the main valve upwards in sequence to open the valve; when the pressure difference between the inlet and the outlet of the electromagnetic valve reaches the starting pressure of the electromagnetic valve, the electromagnetic force raises the pressure of the lower chamber of the pilot small valve and the main valve, and the pressure of the upper chamber is lowered, so that the closing member of the electromagnetic main valve is lifted upwards by utilizing the pressure difference, and the valve is opened; when the power is cut off, the small pilot valve pushes the closing member to move downwards by utilizing spring force or medium pressure so as to close the valve.
It can be understood that, when the current mode is the heating mode and the current ambient temperature is less than or equal to the preset temperature threshold, it indicates that the current condition satisfies the air supply condition, the electromagnetic valve can be controlled to be electrically connected, so that the phase separator can convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet.
In a specific implementation, for example, assuming that a user heats using an air conditioner in a relatively cold winter, the air conditioner is turned on to enter an operation state, and the air conditioner is controlled to enter a heating mode. Under this condition, if detect outdoor current ambient temperature and be 5 ℃, can compare current ambient temperature and preset temperature threshold value, can know, 5 ℃ is less than 7 ℃, satisfy the condition that current ambient temperature is less than or equal to preset temperature threshold value promptly, control the power-on switch on of solenoid valve under this condition, thereby can carry gaseous refrigerant to the compressor through gaseous refrigerant export and compressor return-air inlet, in order to reach the effect of tonifying qi, promote system suction pressure under the low ambient temperature, improve the heat transfer volume, and then improve user experience effect.
Further, since only when the ambient temperature is lower in the heating mode, there is a problem that the heating effect is poor due to the lower suction pressure, and if the current mode of the air conditioner is not the heating mode, or the ambient temperature is not lower, there is no such problem, and it is not necessary to supplement air, in this case, in order to not affect the normal operation of the air conditioner and avoid the loss of energy, after the step S20, the method further includes:
and step S302, when the current ambient temperature is greater than a preset temperature threshold value, controlling the electromagnetic valve to be powered off and closed so as to block the gaseous refrigerant separated by the phase separator.
It can be understood that when the current ambient temperature is greater than the preset temperature threshold, i.e. the current ambient temperature is greater than 7 ℃, it indicates that no air-make is required, and therefore, no air-make operation is required, i.e. the gaseous refrigerant separated by the phase separator is not required to be fed into the compressor. Therefore, the electromagnetic valve can be controlled to be switched off, and the refrigerant between the gaseous refrigerant outlet and the return air port of the compressor can not be conducted under the condition, so that the gaseous refrigerant can not be transmitted to the compressor through the gaseous refrigerant outlet and the return air port of the compressor, the effect of blocking the gaseous refrigerant separated by the phase separator is achieved, the separated gaseous refrigerant can not be input into the compressor, and the loss of energy is avoided.
In a specific implementation, for example, assuming that a user heats using an air conditioner in a relatively cold winter, the air conditioner is turned on to enter an operation state, and the air conditioner is controlled to enter a heating mode. Under the condition, if the current outdoor environment temperature is detected to be 10 ℃, the comparison shows that the temperature of 10 ℃ is higher than 7 ℃, namely the condition that the current environment temperature is higher than the preset temperature threshold value is met, the electromagnetic valve is controlled to be powered off and closed under the condition so as to block the gaseous refrigerant separated by the phase separator, the gaseous refrigerant cannot be transmitted to the return air port of the compressor, and therefore the gaseous refrigerant cannot be input into the compressor.
Further, the compressor comprises a compressor air return pipe, a compressor air return port can be further arranged on the compressor air return pipe, and the gaseous refrigerant outlet is communicated with the compressor air return port through a first pipeline; the control phase separator conveys the separated gaseous refrigerant to a compressor return air port through a gaseous refrigerant outlet, and comprises:
the phase separator is controlled to convey the separated gaseous refrigerant to the first pipeline from the gaseous refrigerant outlet, and the separated gaseous refrigerant is conveyed to the air return port of the compressor through the first pipeline.
It should be understood that, as shown in fig. 3, the compressor return air port a is disposed on the compressor return air pipe, the compressor return air pipe is directly communicated with the compressor, so that after the gaseous refrigerant is transmitted to the compressor return air port, the gaseous refrigerant can be transmitted into the compressor through the compressor return air pipe, and the gaseous refrigerant is separated from the liquid refrigerant in advance, so that the gaseous refrigerant input into the compressor does not have liquid therein, thereby preventing the liquid-carrying compression from causing the compressor damage during the operation of the air conditioner system, and having a better protection effect on the compressor.
It should be noted that the compressor muffler in this embodiment may be any type, size and material of muffler, and may be selected by a skilled person according to the actual situation, for example, the compressor muffler may be a copper pipe or an alloy pipe, and the type of the compressor muffler may be a U-shaped pipe or a straight pipe, which is not limited in this embodiment. In addition, the specific installation position of the compressor muffler is not limited in this embodiment, and in order to achieve better effects, the compressor muffler is preferably installed at a position closer to the compressor.
It should be understood that, as shown in fig. 3, the gaseous refrigerant outlet of the phase separator and the compressor return air port of the compressor return air pipe can be communicated through a first pipeline, wherein the descriptions of "first" and "second" are only used for distinguishing different objects for the purpose of convenience of description, and are not limited otherwise.
It should be understood that the electromagnetic valve may be disposed on the first pipeline between the gaseous refrigerant outlet of the phase separator and the compressor return air port of the compressor return air pipe, specifically, may be disposed in the middle of the first pipeline, may be disposed at a position biased to the gaseous refrigerant outlet in the middle of the first pipeline, may be disposed at a position biased to the compressor return air port in the middle of the first pipeline, may be disposed at another position of the first pipeline, and may be selected according to actual conditions. In some special cases, the electromagnetic valve may be disposed in the first pipeline near the gaseous refrigerant outlet, or in the first pipeline near the return air port of the compressor, which is limited in this embodiment.
It should be noted that, in this embodiment, the type, size, and material of the first pipeline may be the same as, may also be different from, or may be partially different from the engine muffler, and may be selected by a technician according to actual use requirements, which is not limited in this embodiment.
In this embodiment, set up the solenoid valve between the gaseous refrigerant export of phase separator and the compressor return air inlet of compressor, control the gaseous refrigerant state of separating through the solenoid valve to whether control the gaseous refrigerant input compressor of separating through the mode of control solenoid valve switching on and off and carry out the tonifying qi, under the condition that does not increase the cost, can accurately control whether to carry out the tonifying qi, improved tonifying qi control effect, can reach better empty modulation heating effect.
In an embodiment, as shown in fig. 5, a third embodiment of the air make-up control method for an air conditioner according to the present invention is provided based on the first embodiment or the second embodiment, and in this embodiment, based on the first embodiment, the phase separator further includes a gas-liquid two-phase refrigerant inlet, and the gas-liquid two-phase refrigerant inlet is communicated with the outlet of the heat exchanger;
the step S10 includes:
and S101, controlling a heat exchanger to perform heat exchange treatment when the air conditioner is in an operating state, and conveying a gaseous refrigerant and a liquid refrigerant generated in the evaporation heat exchange process to the gas-liquid two-phase refrigerant inlet through an outlet of the heat exchanger.
It should be noted that the air conditioner in this embodiment further includes a heat exchanger, where the heat exchanger in this embodiment may be specifically a condenser, and the condenser respectively plays different roles in a cooling mode and a heating mode of the air conditioner, and plays a role in dissipating heat from the refrigerant as the condenser during cooling, and plays a role in absorbing heat from the refrigerant as the evaporation end during heating.
It should be understood that, during the operation of the air conditioner, the heat exchanger can be controlled to perform the evaporation heat exchange treatment, and the phase separator receives the gaseous refrigerant and the liquid refrigerant generated during the evaporation heat exchange process through the gas-liquid two-phase refrigerant inlet.
In a specific implementation, as shown in fig. 3, the heat exchanger may be a condenser, the condenser may generate a gaseous refrigerant during evaporation and heat exchange of a liquid refrigerant, the condenser may discharge the gaseous refrigerant and the liquid refrigerant generated during the evaporation and heat exchange through an outlet B of the heat exchanger, and transmit the gaseous refrigerant and the liquid refrigerant to a gas-liquid two-phase refrigerant inlet through a third pipeline G3 between the outlet B of the condenser and the gas-liquid two-phase refrigerant inlet 61, so that the gaseous refrigerant and the liquid refrigerant generated during the evaporation and heat exchange may be input into the phase separator.
And step S102, controlling the phase separator to separate the input gaseous refrigerant and liquid refrigerant.
It can be understood that, after receiving the gaseous refrigerant and the liquid refrigerant, the phase separator may separate the input gaseous refrigerant from the liquid refrigerant, so as to obtain the separated gaseous refrigerant and liquid refrigerant. The separated gaseous refrigerant can be output through a gaseous refrigerant outlet, the liquid refrigerant can be output through a liquid refrigerant outlet, and the gaseous refrigerant and the liquid refrigerant are output through different interfaces and pipelines respectively so as to be transmitted to different components.
Furthermore, a liquid refrigerant outlet is also arranged on the phase separator and is communicated with the inlet of the heat exchanger; when the air conditioner is in the operating condition, after controlling phase separator to separate gaseous refrigerant and liquid refrigerant that produce in evaporation heat transfer process, still include:
controlling the phase separator to convey the separated liquid refrigerant to an inlet of the heat exchanger through a liquid refrigerant outlet; controlling a heat exchanger to perform heat exchange treatment on input liquid refrigerant to obtain gas refrigerant to be compressed, and conveying the gas refrigerant to be compressed to a compressor; and controlling the compressor to compress the gaseous refrigerant to be compressed.
It should be understood that after the phase separator performs gas-liquid separation on the refrigerant, the phase separator may be controlled to output the separated liquid refrigerant through the liquid refrigerant outlet and then convey the liquid refrigerant to the heat exchanger inlet communicated with the liquid refrigerant outlet through a pipeline, so as to input the separated liquid refrigerant into the heat exchanger. The heat exchanger can carry out evaporation heat exchange treatment on input liquid refrigerants, after heat exchange is completed, gaseous refrigerants to be compressed are obtained, then the gaseous refrigerants to be compressed are conveyed to the compressor, the compressor is controlled to compress the gaseous refrigerants to be compressed, and pressurized high-temperature and high-pressure gas is obtained to carry out the next circulation.
It is understood that the step of delivering the gaseous refrigerant to be compressed to the compressor may specifically be: and outputting the gaseous refrigerant to be compressed through the other outlet of the heat exchanger, transmitting the gaseous refrigerant to be compressed to the four-way valve through a pipeline, and conveying the gaseous refrigerant to be compressed to the compressor after passing through the four-way valve. The gas refrigerant to be compressed can be delivered to the compressor by controlling the gas refrigerant to be compressed to be delivered to the compressor return air port of the compressor return air pipe through the four-way valve, and other methods are also possible, which is not limited in this embodiment.
Further, the liquid refrigerant outlet is communicated with the inlet of the heat exchanger through a second pipeline; the control phase separator conveys the separated liquid refrigerant to an inlet of the heat exchanger through a liquid refrigerant outlet, and the control phase separator comprises:
and controlling the phase separator to convey the separated liquid refrigerant to the second pipeline from the liquid refrigerant outlet, and conveying the separated liquid refrigerant to the inlet of the heat exchanger through the second pipeline.
It should be understood that the liquid refrigerant outlet of the phase separator is communicated with the inlet of the heat exchanger through a second pipeline, wherein the type, size and material of the second pipeline in this embodiment may be the same as or different from those of the engine or the first pipeline, or may be partially the same as or different from those of the first pipeline, and may be selected by a skilled person according to actual use requirements, which is not limited in this embodiment. In order to achieve better conveying effect and cost saving, the second pipeline is preferably the same as the first pipeline in type, size and material.
In a specific implementation, as shown in fig. 3, after the phase separator separates the liquid refrigerant, the separated liquid refrigerant may be output through the liquid refrigerant outlet 62 and conveyed to the inlet C of the heat exchanger through the second pipeline G2, the heat exchanger may obtain a gas refrigerant to be compressed after further heat exchange processing is performed on the input liquid refrigerant, the gas refrigerant to be compressed may be output through another outlet D of the heat exchanger and then conveyed to the four-way valve, the gas refrigerant to be compressed is conveyed to the compressor return air port a of the compressor return air pipe through the four-way valve, so that the gas refrigerant to be compressed is input to the compressor, the gas refrigerant to be compressed is compressed by the compressor to obtain a pressurized high-temperature and high-pressure gas refrigerant, and then the gas refrigerant is output to the four-way valve for the next cycle by the compressor.
In this embodiment, the heat exchanger may be controlled to perform evaporation heat exchange processing, and gaseous refrigerant and liquid refrigerant generated in the evaporation heat exchange processing process are conveyed to the gas-liquid two-phase refrigerant inlet of the phase separator through the outlet of the heat exchanger, so that the gaseous refrigerant and the liquid refrigerant are input into the phase separator, and the phase separator is controlled to separate the input gaseous refrigerant and liquid refrigerant, and the separated gaseous refrigerant and liquid refrigerant are output from different outlets to perform different processing, thereby achieving the purpose of supplementing air to the compressor of the air conditioner to improve the heating effect, and avoiding or reducing the problem of liquid compression damage caused by the liquid refrigerant returning to the compressor.
In addition, an embodiment of the present invention further provides a storage medium, where an air supply control program of an air conditioner is stored on the storage medium, and the air supply control program of the air conditioner, when executed by a processor, implements the steps of the air supply control method of the air conditioner as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, referring to fig. 6, an embodiment of the present invention further provides an air supply control device for an air conditioner, where the air supply control device for an air conditioner includes:
and the refrigerant separation module 10 is used for controlling the phase separator to separate a gaseous refrigerant and a liquid refrigerant generated in the evaporation heat exchange process when the air conditioner is in an operating state.
It should be understood that although the air make-up scheme of the air conditioner also exists in the prior art, in the existing enthalpy adding system with air make-up, an evaporator or an economizer and a compressor with air make-up are required to be added, and the cost is high. In some existing systems which directly supplement a muffler with a liquid refrigerant, although the system can play a role in increasing the pressure of the back air, the power consumption is greatly increased, and meanwhile, the compressor is compressed with liquid, so that the compressor is easily damaged.
The technical scheme of the embodiment is different from the prior art, and the phase separator is added on the basis of the prior air conditioner and plays a role in separating gas and liquid phases according to the special structure of the phase separator. The phase separator consists of 3 interfaces and a body, wherein the 3 interfaces are respectively a gas-liquid two-phase refrigerant inlet, a liquid refrigerant outlet and a gaseous refrigerant outlet.
In the air conditioner system, there are a plurality of components, and the functions of these components are as follows: a compressor, an air conditioning system heart, compressing and conveying a refrigerant; the four-way valve is used for realizing the switching between refrigeration and heating; the condenser is used as a condenser for cooling the refrigerant and as an evaporation end for absorbing heat of the refrigerant during heating; the outer fan drives outdoor air to pass through the heat exchanger, so that the effect of reinforcing heat absorption or heat release is achieved; the inner fan drives indoor air to pass through the heat exchanger, so as to play a role in reinforcing heat absorption or heat release; the phase separator plays a role in separating gas and liquid phases according to a special structure; the electromagnetic valve plays a role in circulating and blocking the refrigerant in the pipeline as required; the throttling device and the throttling component play a role in reducing pressure and temperature in the system.
In a specific implementation, as shown in fig. 3, fig. 3 is a schematic diagram of an air conditioner system, where the air conditioner system in this embodiment includes an indoor side and an outdoor side, where the indoor side includes: evaporator 7 and interior fan 3, the outdoor side includes: compressor 1, throttle valve 9, filter 8, heat exchanger 4, outer fan 5, phase separator 6, four-way valve 2 and solenoid valve 10. In the embodiment, the heat exchanger 4 is specifically set as a condenser, and both the evaporator and the condenser are heat exchangers, and perform different functions in the cooling mode and the heating mode. The phase separator in fig. 3 comprises three interfaces, respectively: a gaseous refrigerant outlet 63, a liquid refrigerant outlet 62, and a gas-liquid two-phase refrigerant inlet 61. The gas refrigerant outlet 63 is communicated with the return air port A of the compressor through a first pipeline G1, the liquid refrigerant outlet 62 is communicated with the inlet C of the heat exchanger 4 through a second pipeline G2, the gas-liquid two-phase refrigerant inlet 61 is communicated with the outlet B of the heat exchanger 4 through a third pipeline G3, and the other outlet D of the heat exchanger 4 is communicated with the four-way valve 2.
It can be understood that the operation principle of the air conditioner in the embodiment is as follows: when the system is used for refrigerating, gaseous refrigerants discharged by the compressor in a compressed mode pass through the four-way valve to the condenser, are subjected to heat dissipation and condensation processes, then are subjected to throttling, temperature reduction and pressure reduction in the throttling valve part, become low-pressure refrigerants, enter the evaporator to absorb heat for evaporation, then return to the compressor through the four-way valve to be compressed, and are circulated repeatedly. When the system heats, the gas refrigerant compressed by the compressor is directly cooled and condensed to the indoor side by reversing through the four-way valve, becomes high-pressure high-temperature liquid refrigerant, becomes low-temperature low-pressure liquid refrigerant by throttling through the throttling valve part, and then is evaporated and heat exchanged to the outdoor evaporation side. The evaporation side is provided with a phase separator at a certain position in the flow path design, so that a gaseous refrigerant and a liquid refrigerant which are generated in the evaporation heat exchange process are separated, the gaseous refrigerant is directly conveyed to a return air port of the compressor, the liquid refrigerant is input to an inlet of the evaporator for further heat exchange, and then the liquid refrigerant returns to the compressor through the four-way valve to be compressed again and repeatedly circulated.
In a specific implementation, as shown in fig. 3, fig. 3 shows a cooling direction of a refrigerant in a cooling mode and a heating direction of the refrigerant in a heating mode, where the cooling direction and the heating direction are both flow directions of the refrigerant, and the refrigerant includes a gaseous refrigerant and a liquid refrigerant, which are different forms of the refrigerant respectively. Since the solution of the present application mainly addresses the heating mode, taking the heating mode as an example, the refrigerant flow direction is: the compressor → four-way valve → evaporator → throttle valve → filter tube → condenser → phase separator, the phase separator separates the refrigerant to obtain the separated gaseous refrigerant and liquid refrigerant, the gaseous refrigerant is directly conveyed to the compressor, the liquid refrigerant is conveyed to the condenser → four-way valve → compressor.
It should be understood that, based on the above structural arrangement and operation principle, when the air conditioner is in operation when the air conditioner is started, the phase separator may be controlled to separate the gaseous refrigerant and the liquid refrigerant generated in the evaporation heat exchange process, so as to obtain the separated gaseous refrigerant and liquid refrigerant.
And an ambient temperature module 20, configured to obtain a current ambient temperature when the current mode of the air conditioner is a heating mode.
It should be understood that, the solution of the present embodiment is mainly to supplement air to increase the air suction pressure and further increase the heating effect when heating at a lower ambient temperature. Therefore, it is necessary to perform two determinations, and first, it is determined whether the current mode of the air conditioner is the heating mode. When the current mode of the air conditioner is the heating mode, whether the ambient temperature is low is judged, which specifically includes: and obtaining the current environment temperature, and comparing the current environment temperature with a preset temperature threshold value to judge whether the environment temperature is lower. The preset temperature threshold may be set by a technician according to an actual situation, for example, the preset temperature threshold may be set to 7 ℃, and may also be set to other values, which is not limited in this embodiment.
It should be understood that the current ambient temperature in this embodiment may be the current ambient temperature of the indoor side, and may also be the current ambient temperature of the outdoor side, which is not limited in this embodiment.
In one embodiment, a temperature sensor may be provided in the air conditioner system at a suitable place on the indoor side or the outdoor side, and the ambient temperature is detected by the temperature sensor provided in the air conditioner system.
In another embodiment, an independent temperature sensor may be further disposed indoors or outdoors, the ambient temperature is detected by the temperature sensor, and the ambient temperature is sent to the controller of the air conditioner by way of wired or wireless communication, or the current ambient temperature may be detected by other ways, which is not limited in this embodiment.
And the air supplement control module 30 is used for controlling the phase separator to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet when the current ambient temperature is less than or equal to the preset temperature threshold.
It can be understood that when the current ambient temperature is less than or equal to the preset temperature threshold, that is, the current ambient temperature is less than or equal to 7 ℃, it indicates that air supplement is required at this time, and therefore, the phase separator may be controlled to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet to supplement air.
In a specific implementation, as shown in fig. 3, the gaseous refrigerant separated by the phase separator is delivered to the compressor return air port a through a gaseous refrigerant outlet 63 to deliver the gaseous refrigerant to the compressor.
It should be appreciated that the lower the temperature of the heating environment, the lower the system suction capacity, resulting in a reduced suction pressure, especially in severe frosting conditions where pressure decay is more pronounced. The phase separator is added in the system, so that the gas and the liquid after heat exchange of the condenser can be separated, wherein the gas part can be controlled by opening and conducting the electromagnetic valve, when the ambient temperature is lower than 7 ℃, the electromagnetic valve is electrified and conducted, and the gaseous refrigerant directly returns to the air return port of the compressor, so that the suction pressure of the system is improved, the circulation quantity of the system is increased, and meanwhile, the gas phase and the liquid phase are separated, so that the system resistance can be effectively reduced, the frosting period is prolonged, and the heating quantity is improved.
In addition, as an economizer and a throttling device are required to be added to the system with the air supplementing compressor, the cost is increased while the complexity of system control is increased, and the system can reduce the cost, simplify the system, achieve the effects of supplementing air and improving the heat exchange quantity and effectively solve the original problems by directly separating gas to the return air port of the compressor. In addition, the invention can heat the air-absorbing medium by supplementing the gaseous refrigerant, thereby avoiding or reducing the situation that the liquid refrigerant returns to the compressor to cause the damage to the compressor caused by liquid-carrying compression.
In this embodiment, carry out gas-liquid separation's mode through setting up the phase separator to increasing great cost, and avoiding liquid refrigerant to get back to the compressor and lead to taking under the prerequisite that the liquid compression damaged the compressor, improving air conditioner system's suction pressure, increasing system circulation volume, the double-phase separation of gas-liquid can effectively reduce system resistance simultaneously, thereby the extension period that frosts promotes the heating capacity, has reached better heating effect.
In other embodiments or specific implementation methods of the air make-up control device of the air conditioner of the present invention, reference may be made to the above embodiments of the methods, and details are not repeated herein.
It should be noted that, in this document, 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. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention or the portions contributing to the prior art may be embodied in the form of software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) readable by an estimator as described above and includes instructions for enabling an intelligent device (such as a mobile phone, an estimator, or an air conditioner) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An air supplement control method of an air conditioner is characterized in that the air conditioner comprises the following steps: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port;
the air supplementing control method of the air conditioner comprises the following steps:
when the air conditioner is in an operating state, controlling the phase separator to separate gaseous refrigerants and liquid refrigerants generated in the evaporation heat exchange process;
when the current mode of the air conditioner is a heating mode, acquiring the current environment temperature; and
and when the current ambient temperature is less than or equal to a preset temperature threshold value, controlling the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
2. The air make-up control method of the air conditioner according to claim 1, wherein the air conditioner further comprises an electromagnetic valve, the electromagnetic valve is disposed between the gaseous refrigerant outlet and the compressor return air port;
when the current ambient temperature is less than or equal to a preset temperature threshold value, the phase separator is controlled to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet, and the method comprises the following steps:
and when the current ambient temperature is less than or equal to a preset temperature threshold value, controlling the electromagnetic valve to be electrified and conducted so as to enable the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet.
3. The air make-up control method of an air conditioner according to claim 2, wherein after obtaining the current ambient temperature when the current mode of the air conditioner is the heating mode, further comprising:
and when the current environment temperature is greater than a preset temperature threshold value, controlling the electromagnetic valve to be powered off and closed so as to block the gaseous refrigerant separated by the phase separator.
4. The air make-up control method of the air conditioner according to claim 1, wherein the compressor includes a compressor return pipe, the compressor return pipe is provided with the compressor return port, and the gaseous refrigerant outlet is communicated with the compressor return port through a first pipeline;
the controlling the phase separator to convey the separated gaseous refrigerant to the compressor return air port through the gaseous refrigerant outlet includes:
and controlling the phase separator to convey the separated gaseous refrigerant to the first pipeline from the gaseous refrigerant outlet, and conveying the separated gaseous refrigerant to the compressor return air port through the first pipeline.
5. The air make-up control method of the air conditioner according to any one of claims 1 to 4, wherein the air conditioner further comprises a heat exchanger, the phase separator further comprises a liquid refrigerant outlet;
when the air conditioner is in an operating state, after controlling the phase separator to separate a gaseous refrigerant and a liquid refrigerant generated in an evaporation heat exchange process, the method further comprises the following steps:
controlling the phase separator to convey the separated liquid refrigerant to an inlet of the heat exchanger through the liquid refrigerant outlet;
controlling the heat exchanger to perform heat exchange treatment on the input liquid refrigerant to obtain a gas refrigerant to be compressed, and conveying the gas refrigerant to be compressed to the compressor; and
and controlling the compressor to compress the gaseous refrigerant to be compressed.
6. The air make-up control method of the air conditioner according to claim 5, wherein the liquid refrigerant outlet is communicated with the inlet of the heat exchanger through a second pipeline;
the controlling the phase separator to convey the separated liquid refrigerant to the inlet of the heat exchanger through the liquid refrigerant outlet includes:
and controlling the phase separator to convey the separated liquid refrigerant to the second pipeline from the liquid refrigerant outlet, and conveying the separated liquid refrigerant to the inlet of the heat exchanger through the second pipeline.
7. The air make-up control method of the air conditioner according to any one of claims 1 to 4, wherein the phase separator further comprises a gas-liquid two-phase refrigerant inlet;
when the air conditioner is in an operating state, the phase separator is controlled to separate gaseous refrigerant and liquid refrigerant generated in the evaporation heat exchange process, and the method comprises the following steps:
when the air conditioner is in an operating state, controlling a heat exchanger to perform heat exchange treatment, and conveying a gaseous refrigerant and a liquid refrigerant generated in the evaporation heat exchange process to the gas-liquid two-phase refrigerant inlet through an outlet of the heat exchanger;
and controlling the phase separator to separate the input gaseous refrigerant and liquid refrigerant.
8. An air supplement control device of an air conditioner, characterized in that the air supplement control device of the air conditioner comprises:
the refrigerant separation module is used for controlling the phase separator to separate gaseous refrigerants and liquid refrigerants generated in the evaporation heat exchange process when the air conditioner is in the running state;
the environment temperature module is used for acquiring the current environment temperature when the current mode of the air conditioner is a heating mode; and
and the air supplement control module is used for controlling the phase separator to convey the separated gaseous refrigerant to the return air port of the compressor through the gaseous refrigerant outlet when the current ambient temperature is less than or equal to a preset temperature threshold value.
9. An air conditioner, characterized in that the air conditioner comprises: the phase separator comprises a gaseous refrigerant outlet, the compressor comprises a compressor return air port, and the gaseous refrigerant outlet is communicated with the compressor return air port; the air conditioner further includes: the air supply control method of the air conditioner comprises a memory, a processor and an air supply control program of the air conditioner, wherein the air supply control program of the air conditioner is stored on the memory and can run on the processor, and when being executed by the processor, the air supply control program of the air conditioner realizes the air supply control method of the air conditioner according to any one of claims 1 to 7.
10. A storage medium having stored thereon an air supplement control program of an air conditioner, the air supplement control program of the air conditioner implementing an air supplement control method of the air conditioner according to any one of claims 1 to 7 when executed by a processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440651.2A CN115218362A (en) | 2021-04-21 | 2021-04-21 | Air supplementing control method and device for air conditioner, air conditioner and storage medium |
| PCT/CN2022/076585 WO2022222587A1 (en) | 2021-04-20 | 2022-02-17 | Air supply control method for air conditioner, air conditioner, storage medium, and compressor for air conditioner |
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