CN114688695A - Air conditioner, method of controlling the same, and computer-readable storage medium - Google Patents
Air conditioner, method of controlling the same, and computer-readable storage medium Download PDFInfo
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- CN114688695A CN114688695A CN202011644869.1A CN202011644869A CN114688695A CN 114688695 A CN114688695 A CN 114688695A CN 202011644869 A CN202011644869 A CN 202011644869A CN 114688695 A CN114688695 A CN 114688695A
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- air conditioner
- heat exchanger
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- liquid separator
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000003507 refrigerant Substances 0.000 claims abstract description 109
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 238000001816 cooling Methods 0.000 claims description 39
- 238000005057 refrigeration Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Classifications
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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
- F24F11/88—Electrical aspects, e.g. 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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F25B39/00—Evaporators; Condensers
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
Abstract
The invention discloses an air conditioner which comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprises a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger, and a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor. The invention also provides a control method of the air conditioner and a computer readable storage medium. The invention improves the refrigerating capacity of the air conditioner and ensures the refrigerating effect of the air conditioner.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, a control method thereof, and a computer-readable storage medium.
Background
With the improvement of living standard of people, the air conditioner has become an indispensable device for home or office.
The air conditioner is because weather or self reason, and the refrigerating output can be less, can't satisfy user's refrigeration demand, also has the relatively poor problem of refrigeration effect of air conditioner among the prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a control method thereof and a computer readable storage medium, and aims to solve the problem that the refrigerating effect of the air conditioner is poor.
In order to achieve the purpose, the air conditioner provided by the invention comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprises a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger, and a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor.
In one embodiment, a control valve is in communication between the gaseous refrigerant outlet and the inlet of the compressor.
In an embodiment, the air conditioner further includes a cooling device for cooling the refrigerant flowing out of the outdoor heat exchanger, the cooling device includes a housing, a heat exchange cavity is formed in the housing, a first pipeline is arranged on a pipeline between the gas refrigerant outlet and the gas inlet, a second pipeline is arranged on a pipeline between the throttle valve and the outdoor heat exchanger, and the first pipeline and the second pipeline both penetrate through the housing and exchange heat through the heat exchange cavity.
In an embodiment, the pipe section of the first pipeline in the shell is arranged in a spiral manner, and/or the pipe section of the second pipeline in the shell is arranged in a spiral manner.
In order to achieve the above object, the present invention further provides a control method of an air conditioner, the air conditioner includes an indoor heat exchanger, a compressor, an outdoor heat exchanger, and a throttle valve, the air conditioner further includes a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, a main refrigerant outlet of the gas-liquid separator is connected to a refrigerant inlet of the indoor heat exchanger, a gaseous refrigerant outlet of the gas-liquid separator is connected to an air inlet of the compressor, a control valve is provided between a gaseous refrigerant outlet of the gas-liquid separator and an air inlet of the compressor, the control method of the air conditioner includes the following steps:
and when the air conditioner operates in a cooling mode, opening the control valve.
In one embodiment, the control method of the air conditioner includes:
when the air conditioner operates in a cooling mode, acquiring reference parameters, wherein the reference parameters comprise at least one of the operating frequency of a compressor, the power of the air conditioner and the outdoor temperature;
and when the reference parameter is larger than a preset threshold value, executing the step of opening the control valve.
In an embodiment, after the step of obtaining the reference parameter, the method further includes:
when the reference parameter is larger than a preset threshold value, determining whether the currently acquired indoor temperature is larger than the last acquired indoor temperature, wherein the indoor temperature is acquired at regular time after the air conditioner operates in a refrigeration mode;
and when the currently acquired indoor temperature is greater than the last acquired indoor temperature and the difference between the currently acquired indoor temperature and the last acquired indoor temperature is greater than a preset difference, executing the step of opening the control valve.
In one embodiment, after the step of opening the control valve, the method further includes:
acquiring the suction temperature and the suction pressure of a compressor, and determining the difference value of the suction temperature and the saturation temperature corresponding to the suction pressure;
and adjusting the opening of the throttle valve according to the difference between the suction temperature and the saturation temperature.
In order to achieve the above object, the present invention further provides an air conditioner, including a compressor, an outdoor heat exchanger, and a throttle valve, wherein the air conditioner further includes a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, a main refrigerant outlet of the gas-liquid separator is connected to a refrigerant inlet of the indoor heat exchanger, a gaseous refrigerant outlet of the gas-liquid separator is connected to an air inlet of the compressor, and a control valve is disposed between the gaseous refrigerant outlet of the gas-liquid separator and the air inlet of the compressor; the air conditioner further comprises a memory, a processor and a control program stored in the memory and capable of running on the processor, wherein the control valve is connected with the processor, and the control program realizes the steps of the control method of the air conditioner when being executed by the processor.
In order to achieve the above object, the present invention also provides a computer-readable storage medium including a control program that implements the respective steps of the control method of the air conditioner as described above when executed by a processor.
The air conditioner comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprises a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a gas refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor, and a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger. When the air conditioner refrigerates, the refrigerant containing gas and liquid flowing out of the throttling valve enters the gas-liquid separator, the gas-liquid separator enables the gaseous refrigerant to flow into the compressor through the gaseous refrigerant outlet, the liquid refrigerant flows into the indoor heat exchanger through the main refrigerant outlet, and therefore the space occupied by the gaseous refrigerant in the indoor heat exchanger is reduced, the indoor heat exchanger can conduct heat exchange on more liquid refrigerants in the limited space, the refrigerating capacity of the air conditioner is improved, and the refrigerating effect of the air conditioner is guaranteed.
Drawings
Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 2 is another schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to a third embodiment of the present invention.
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.
The invention provides an air conditioner.
Referring to fig. 1, the air conditioner includes an outdoor heat exchanger 10, a compressor 20, and an indoor heat exchanger 30 and a throttle valve 40, which are communicated. The air conditioner further includes a gas-liquid separator 50 connected between the throttle valve 40 and the indoor heat exchanger 30, and the compressor 20 is connected to the outdoor heat exchanger 10 and the indoor heat exchanger 30 through a four-way valve (not shown), respectively. The gas-liquid separator 50 includes a gas refrigerant outlet 51 and a main refrigerant outlet 52, the gas refrigerant outlet 51 is connected to the air inlet 21 of the compressor 20, the main refrigerant outlet 52 is connected to the refrigerant inlet 31 of the indoor heat exchanger 30, and the main refrigerant outlet 52 is used for outputting a liquid refrigerant or a mixed refrigerant formed by mixing the gas refrigerant and the liquid refrigerant.
In this embodiment, when the air conditioner operates in the cooling mode, the refrigerant of the outdoor heat exchanger 10 flows into the gas-liquid separator 50, and the gas-liquid separator 50 separates the refrigerant into a gas refrigerant and a liquid refrigerant. The gaseous refrigerant floats on the upper portion of the gas-liquid separator 50, and is supplied to the compressor through the gas inlet 21 via the gaseous refrigerant outlet 51 provided at the upper portion. The liquid refrigerant sinks to the lower portion of the gas-liquid separator 50, and is input to the indoor heat exchanger 30 through the main refrigerant outlet 52 at the lower portion.
Further, the opening degree of the throttle valve 40 is adjustable, and is adjusted according to the suction superheat of the compressor. When the gaseous refrigerant flows into the compressor 20, the suction temperature of the compressor changes, thereby causing a change in suction superheat, and the air conditioner adjusts the opening of the throttle valve 40 according to the changed suction superheat, thereby controlling the heat exchange amount of the outdoor heat exchanger and preventing the compressor from being damaged.
In this embodiment, the air conditioner is when refrigerating, the refrigerant that contains gas and liquid that flows out from the choke valve enters vapour and liquid separator, vapour and liquid separator passes through gaseous state refrigerant export inflow compressor with gaseous state refrigerant, and with liquid refrigerant through main refrigerant export inflow indoor heat exchanger, thereby reduce the space that gaseous state refrigerant took up in indoor heat exchanger, make indoor heat exchanger can carry out the heat transfer to more liquid refrigerant in limited space, the refrigerating output of air conditioner has been improved, the refrigeration effect of air conditioner has been guaranteed.
Referring to fig. 2, the control valve 60 communicates between the gas refrigerant outlet 51 and the inlet 21 of the compressor 20. After the air conditioner operates in the cooling mode, the air conditioner can selectively open the control valve 60, so that the cooling capacity of the air conditioner is increased under the condition that the cooling capacity required by a user is higher. For example, if the outdoor temperature is too high and the cooling capacity of the air conditioner is high, the control valve 60 may be opened to increase the cooling capacity of the air conditioner. For another example, if the operation frequency of the compressor is higher, it indicates that the cooling capacity required by the user is higher, and at this time, the control valve 60 may be opened to increase the cooling capacity of the air conditioner. In addition, if the power of the air conditioner is large, it can be determined that the cooling capacity required by the user is high, and the control valve 60 can be opened.
Further, the air conditioner further includes a cooling device 70, and the cooling device 70 includes a housing 71, and a heat exchange cavity is formed in the housing 71. The pipeline between the gas refrigerant outlet 51 and the air inlet 21 is the first pipeline 22, the pipeline between the throttle valve 40 and the outdoor heat exchanger 10 is the second pipeline 11, the first pipeline 22 and the second pipeline 11 both penetrate through the shell 71 and exchange heat through the heat exchange cavity, that is, the low-temperature gaseous refrigerant in the first pipeline 22 in the heat exchange cavity cools the high-temperature refrigerant in the second pipeline 11 in the heat exchange cavity, so that the cooling device 70 achieves the purpose of cooling the refrigerant flowing out of the outdoor heat exchanger 10, the supercooling degree of the refrigeration is improved, the refrigerating capacity of the air conditioner is increased, and the refrigeration effect of the air conditioner is ensured.
In order to increase the heat exchange efficiency, the pipe sections of the first pipeline 22 in the shell 71 and the second pipeline 11 in the shell 71 may be arranged in a spiral manner, or the pipe sections of the first pipeline 22 in the shell 71 and the pipe sections of the second pipeline 11 in the shell 71 may be arranged in a spiral manner.
As shown in fig. 3, fig. 3 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention.
The terminal related to the embodiment of the invention can be an air conditioner, and the air conditioner comprises: a processor 101, such as a CPU, a memory 102, a communication bus 103, and a control valve 104. Wherein the communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a control program may be included in the memory 103 as a kind of computer storage medium; and the processor 101 may be configured to call the control program stored in the memory 102 and perform the following operations:
and when the air conditioner operates in a cooling mode, opening the control valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
when the air conditioner operates in a cooling mode, acquiring reference parameters, wherein the reference parameters comprise at least one of the operating frequency of a compressor, the power of the air conditioner and the outdoor temperature;
and when the reference parameter is larger than a preset threshold value, executing the step of opening the control valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
when the reference parameter is larger than a preset threshold value, determining whether the currently acquired indoor temperature is larger than the last acquired indoor temperature, wherein the indoor temperature is acquired at regular time after the air conditioner operates in a refrigeration mode;
and when the currently acquired indoor temperature is greater than the last acquired indoor temperature and the difference between the currently acquired indoor temperature and the last acquired indoor temperature is greater than a preset difference, executing the step of opening the control valve.
In one embodiment, the processor 101 may be configured to call a control program stored in the memory 102 and perform the following operations:
acquiring the suction temperature and the suction pressure of a compressor, and determining the difference value of the suction temperature and the saturation temperature corresponding to the suction pressure;
and adjusting the opening of the throttle valve according to the difference between the suction temperature and the saturation temperature.
According to the scheme, the air conditioner comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprises a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor, and a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger. When the air conditioner refrigerates, the refrigerant containing gas and liquid flowing out of the throttling valve enters the gas-liquid separator, the gas-liquid separator enables the gaseous refrigerant to flow into the compressor through the gaseous refrigerant outlet, the liquid refrigerant flows into the indoor heat exchanger through the main refrigerant outlet, and therefore the space occupied by the gaseous refrigerant in the indoor heat exchanger is reduced, the indoor heat exchanger can conduct heat exchange on more liquid refrigerants in the limited space, the refrigerating capacity of the air conditioner is improved, and the refrigerating effect of the air conditioner is guaranteed.
Based on the hardware architecture of the air conditioner, the embodiment of the control method of the air conditioner is provided.
Referring to fig. 4, fig. 4 is a first embodiment of a control method of an air conditioner according to the present invention, the control method of the air conditioner including the steps of:
and step S10, when the air conditioner runs in a cooling mode, opening the control valve.
In this embodiment, the air conditioner is provided with a gas-liquid separator provided between the indoor heat exchanger and the throttle valve. In the cooling mode, the gas-liquid separator is used for separating the refrigerant from the outdoor heat exchanger into gas and liquid. When the air conditioner starts the control valve, the gaseous refrigerant on the upper part of the gas-liquid separator flows into the compressor through the gaseous refrigerant outlet, and the gaseous refrigerant is prevented from flowing into the indoor heat exchanger from the main refrigerant outlet along with the liquid refrigerant.
The gaseous refrigerant flows into the compressor from the gaseous refrigerant outlet of the gas-liquid separator, so that all the refrigerants flowing into the indoor heat exchanger are liquid. And because the gaseous refrigerant can not exchange heat with the outside in the indoor heat exchanger, therefore, when the air conditioner refrigerates, the control valve is opened, the space occupied by the gaseous refrigerant is reduced in the indoor heat exchanger, and the space occupied by the liquid refrigerant is increased, so that the pressure loss in the indoor heat exchanger is improved, the indoor heat exchanger can exchange heat with the outside air more sufficiently, the refrigerating capacity of the air conditioner is improved, and the refrigerating effect of the air conditioner is further ensured.
In the technical scheme that this embodiment provided, the air conditioner is including the indoor heat exchanger, compressor, outdoor heat exchanger and the choke valve of intercommunication, and the air conditioner is still including connecting the vapour and liquid separator between choke valve and the indoor heat exchanger, and vapour and liquid separator's gaseous refrigerant export is connected with the air inlet of compressor, and vapour and liquid separator's main refrigerant export and indoor heat exchanger's refrigerant inlet are connected. When the air conditioner refrigerates, the refrigerant containing gas and liquid flowing out of the throttling valve enters the gas-liquid separator, the gas-liquid separator enables the gaseous refrigerant to flow into the compressor through the gaseous refrigerant outlet, the liquid refrigerant flows into the indoor heat exchanger through the main refrigerant outlet, and therefore the space occupied by the gaseous refrigerant in the indoor heat exchanger is reduced, the indoor heat exchanger can conduct heat exchange on more liquid refrigerants in the limited space, the refrigerating capacity of the air conditioner is improved, and the refrigerating effect of the air conditioner is guaranteed.
Referring to fig. 5, fig. 5 is a second embodiment of the control method of the air conditioner according to the present invention, and based on the first embodiment, said S10 includes:
step S11, when the air conditioner runs in the cooling mode, obtaining a reference parameter, wherein the reference parameter comprises at least one of the running frequency of the compressor, the power of the air conditioner and the outdoor temperature;
and step S12, when the reference parameter is larger than a preset threshold value, opening the control valve.
When the air conditioner is used for refrigeration in summer, various heat loads of a user use environment can be increased synchronously along with the rise of the air temperature (such as heat leakage of a wall body, heat leakage of a window and glass and heat radiation of the sun), in addition, as the outdoor air temperature rises, the heat exchange of the outdoor heat exchanger and the air becomes poor, the temperature requirement of the refrigeration requirement of the user is kept unchanged, and the refrigeration output requirement of the air conditioner in a high-air-temperature state is higher. Therefore, the air conditioner needs to increase the cooling capacity when the outdoor temperature is high.
In addition, the user has a high refrigeration demand for the air conditioner, and the air conditioner is embodied in that the operating frequency of the compressor is high or the power of the air conditioner is high in order to meet the high refrigeration demand of the user. Thus, in the case when the operation frequency of the compressor is high or the power of the air conditioner is large, the cooling demand of the user is high, and at this time, the air conditioner needs to increase the cooling capacity.
For this, the air conditioner obtains a reference parameter after the air conditioner operates in the cooling mode, and the reference parameter includes at least one of an operating frequency of the compressor, a power of the air conditioner, and an outdoor temperature. The air conditioner judges whether the reference parameter is larger than a preset threshold value or not, if the reference parameter is larger than the preset threshold value, the air conditioner can determine that the refrigeration demand for the air conditioner is high, and at the moment, the air conditioner starts a control valve.
In the technical scheme provided by this embodiment, after the air conditioner operates in the cooling mode, a reference parameter of at least one of an outdoor temperature, an operating frequency of the compressor, and a power of the air conditioner is obtained, and if the reference parameter is greater than a preset threshold value, the control valve is opened, so that a cooling capacity of the air conditioner is increased.
Referring to fig. 6, fig. 6 shows a third embodiment of the method for controlling an air conditioner according to the present invention, and based on the second embodiment, after step S11, the method further includes:
step S20, when the reference parameter is larger than a preset threshold value, determining whether the currently acquired indoor temperature is larger than the last acquired indoor temperature, wherein the indoor temperature is acquired regularly after the air conditioner operates in a refrigeration mode;
and step S30, when the currently acquired indoor temperature is greater than the last acquired indoor temperature and the difference between the currently acquired indoor temperature and the last acquired indoor temperature is greater than a preset difference, executing the step of opening the control valve.
In the embodiment, the reference parameter is greater than the preset threshold value, so that the refrigerating demand for the air conditioner is large, but the indoor temperature tends to be stable, the air conditioner does not need to output excessive refrigerating capacity, and the room is prevented from being supercooled.
The air conditioner can acquire the indoor temperature at regular time. And when the reference parameter is greater than the preset threshold value, determining whether the currently acquired indoor temperature is greater than the last acquired indoor temperature, and if the currently acquired indoor temperature is greater than the last acquired indoor temperature, indicating that the indoor temperature reaches the set temperature, and then the indoor temperature rises due to the fact that the refrigerating capacity of the air conditioner is reduced. The air conditioner further determines a difference value between the currently acquired indoor temperature and the last acquired indoor temperature, if the difference value is larger than a preset difference value, the current indoor temperature rises too high, the refrigerating capacity of the air conditioner needs to be increased, and at the moment, the control valve is opened to increase the refrigerating capacity of the air conditioner. It can be understood that, when the reference parameter is greater than the preset threshold, the currently obtained indoor temperature is greater than the last obtained indoor temperature, and the difference between the currently obtained indoor temperature and the last obtained indoor temperature is greater than the preset threshold, the control valve is opened to increase the refrigerating capacity of the air conditioner.
In the technical scheme provided by this embodiment, after the air conditioner operates in the cooling mode, a reference parameter is acquired, and when the reference parameter is greater than a preset threshold value, it is determined whether the currently acquired indoor temperature is greater than the temperature acquired last time, if so, the current indoor temperature is greater than the indoor temperature acquired last time, and the difference between the two indoor temperatures is greater than a preset difference, and a control valve is opened to improve the cooling capacity of the air conditioner.
In one embodiment, after the control valve is opened, the suction temperature of the compressor changes, and the suction superheat degree of the compressor changes, so that the opening degree of the throttle valve needs to be controlled to adjust the heat exchange amount of the outdoor heat exchanger. Specifically, after the control valve is opened, the suction temperature and the suction pressure of the compressor are acquired. The air conditioner determines the difference between the suction temperature and the saturation temperature corresponding to the suction pressure, and the difference is the suction superheat degree. The air conditioner adjusts the opening of the throttle valve according to the suction superheat degree to enable the suction superheat degree to be in a normal range, damage to a rotor of the compressor due to the fact that the suction superheat degree is too small is avoided, and the compressor is prevented from being stopped due to the fact that the suction superheat degree is too high.
In an embodiment, the air conditioner is provided with a cooling device, the cooling device may be a heat exchanger, that is, the low-temperature gas refrigerant flowing out of the gas refrigerant outlet cools the high-temperature refrigerant flowing out of the outdoor heat exchanger through the heat exchanger, so as to improve the supercooling degree of the refrigeration, and further improve the refrigerating capacity of the air conditioner. That is, after the air conditioner opens the control valve, the low-temperature gaseous refrigerant flowing into the cooling device cools the high-temperature refrigerant flowing out of the outdoor heat exchanger, and then flows into the compressor.
The present invention also provides a computer-readable storage medium characterized in that the computer-readable storage medium includes a control program which, when executed by a processor, implements the respective steps of the control method of the air conditioner as described above.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioning device, or a network device) 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 is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are encompassed in the scope of the present invention.
Claims (10)
1. The air conditioner is characterized by comprising an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprising a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger, and a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor.
2. The air conditioner as claimed in claim 1, wherein a control valve is connected between a gas refrigerant outlet of the gas-liquid separator and an air inlet of the compressor.
3. The air conditioner according to claim 1 or 2, further comprising a cooling device for cooling the refrigerant flowing out of the outdoor heat exchanger, wherein the cooling device comprises a housing, a heat exchange cavity is formed in the housing, a first pipeline is arranged between the gas refrigerant outlet and the air inlet, a second pipeline is arranged between the throttle valve and the outdoor heat exchanger, and the first pipeline and the second pipeline both penetrate through the housing and exchange heat through the heat exchange cavity.
4. The air conditioner according to claim 3, wherein the pipe section of the first pipeline in the housing is arranged in a spiral manner, and/or the pipe section of the second pipeline in the housing is arranged in a spiral manner.
5. The control method of the air conditioner is characterized in that the air conditioner comprises an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, the air conditioner further comprises a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger, a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor, a control valve is arranged between the gaseous refrigerant outlet of the gas-liquid separator and the air inlet of the compressor,
the control method of the air conditioner comprises the following steps:
and when the air conditioner operates in a cooling mode, opening the control valve.
6. The control method of an air conditioner according to claim 5, wherein the control method of an air conditioner includes:
when the air conditioner operates in a cooling mode, acquiring reference parameters, wherein the reference parameters comprise at least one of the operating frequency of a compressor, the power of the air conditioner and the outdoor temperature;
and when the reference parameter is greater than a preset threshold value, executing the step of opening the control valve.
7. The control method of an air conditioner according to claim 6, further comprising, after the step of obtaining the reference parameter:
when the reference parameter is larger than a preset threshold value, determining whether the currently acquired indoor temperature is larger than the last acquired indoor temperature, wherein the indoor temperature is acquired at regular time after the air conditioner operates in a refrigeration mode;
and when the currently acquired indoor temperature is greater than the last acquired indoor temperature and the difference between the currently acquired indoor temperature and the last acquired indoor temperature is greater than a preset difference, executing the step of opening the control valve.
8. The method for controlling an air conditioner according to claim 5, further comprising, after the step of opening the control valve:
acquiring the suction temperature and the suction pressure of a compressor, and determining the difference value of the suction temperature and the saturation temperature corresponding to the suction pressure;
and adjusting the opening of the throttle valve according to the difference between the suction temperature and the saturation temperature.
9. An air conditioner is characterized by comprising an indoor heat exchanger, a compressor, an outdoor heat exchanger and a throttle valve which are communicated, and further comprising a gas-liquid separator connected between the throttle valve and the indoor heat exchanger, wherein a main refrigerant outlet of the gas-liquid separator is connected with a refrigerant inlet of the indoor heat exchanger, a gaseous refrigerant outlet of the gas-liquid separator is connected with an air inlet of the compressor, and a control valve is arranged between the gaseous refrigerant outlet of the gas-liquid separator and the air inlet of the compressor;
the air conditioner further comprises a memory, a processor, and a control program stored in the memory and executable on the processor, the control valve being connected with the processor, the control program, when executed by the processor, implementing the steps of the control method of the air conditioner according to any one of claims 5-8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a control program which, when executed by a processor, implements the steps of the control method of an air conditioner according to any one of claims 5 to 8.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763774A (en) * | 2017-11-09 | 2018-03-06 | 青岛海尔空调器有限总公司 | Air conditioner cooling cycle system and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763774A (en) * | 2017-11-09 | 2018-03-06 | 青岛海尔空调器有限总公司 | Air conditioner cooling cycle system and air conditioner |
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