CN112178893B - Air conditioner, control method, and computer-readable storage medium - Google Patents

Air conditioner, control method, and computer-readable storage medium Download PDF

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Publication number
CN112178893B
CN112178893B CN202010998871.2A CN202010998871A CN112178893B CN 112178893 B CN112178893 B CN 112178893B CN 202010998871 A CN202010998871 A CN 202010998871A CN 112178893 B CN112178893 B CN 112178893B
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China
Prior art keywords
valve body
pipe
air conditioner
controlling
air pipe
Prior art date
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CN202010998871.2A
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Chinese (zh)
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CN112178893A (en
Inventor
马熙华
庄子宝
王命仁
谭志军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Application filed by Midea Group Co Ltd, GD Midea Heating and Ventilating Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN202010998871.2A priority Critical patent/CN112178893B/en
Priority to US17/922,596 priority patent/US20230167999A1/en
Priority to EP20955051.6A priority patent/EP4130597A4/en
Priority to PCT/CN2020/135836 priority patent/WO2022062209A1/en
Publication of CN112178893A publication Critical patent/CN112178893A/en
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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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
    • 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
    • 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
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle

Abstract

The invention provides an air conditioner, a control method and a computer readable storage medium. The air conditioner includes: refrigerant auto-change over device, indoor heat exchanger, outdoor heat exchanger, compressor, memory and treater, refrigerant auto-change over device is including liquid pipe, trachea and valve module, and the treater execution computer program is in order to carry out: acquiring switching information of a working mode of the air conditioner; and controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of the air pipe and the liquid pipe, and then opened according to the sequence of the air pipe and the liquid pipe. Therefore, in the switching process of the working modes, the air pipe and the liquid pipe are closed firstly to limit the refrigerant in the heat exchanger of the indoor unit, the refrigerant quantity to be balanced after the air pipe connected with the target working mode is communicated is reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, and the operation stability of the compressor is ensured.

Description

Air conditioner, control method, and computer-readable storage medium
Technical Field
The present invention relates to the field of server technologies, and in particular, to an air conditioner, a control method of an air conditioner, and a computer-readable storage medium.
Background
In the three-pipe heat recovery multi-split air-conditioning system, the indoor unit needs to change the flow direction of the refrigerant when the mode is switched. The flow direction of the refrigerant is changed, and the air pipe of the indoor unit is often switched between the high-pressure air pipe and the low-pressure air pipe, so that the refrigerant in one state is connected with the indoor unit, and a passage is formed between the refrigerant and the liquid pipe refrigerant. Because the refrigerant pressure difference between the high-pressure air pipe and the low-pressure air pipe is large, when the indoor unit is switched to another pipe, the refrigerant of the indoor unit and the refrigerant of the switched pipeline can form direct communication of the high-pressure refrigerant and the low-pressure refrigerant, and therefore obvious noise is generated. In order to reduce the noise in switching the modes, one of the two methods is to reduce the flow rate of the switched communicating refrigerant by a small opening degree, but it takes a very long time, and the time is a time that the normal cooling or heating cannot be performed, which directly affects the use of the user. The other is through reducing compressor output, reduces the pressure differential of interior gas pipe and liquid pipe when switching, nevertheless can influence system steady operation like this, especially when having different interior machines frequently to switch, can lead to the system can't establish enough pressure differential, influences user's result of use.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention proposes an air conditioner.
A second aspect of the present invention is to provide a control method of an air conditioner.
A third aspect of the invention is directed to a computer-readable storage medium.
In view of the above, according to a first aspect of the present invention, there is provided an air conditioner including: the refrigerant switching device comprises a liquid pipe, an air pipe and a valve assembly, wherein the valve assembly is arranged on the liquid pipe and the air pipe and is configured to open the liquid pipe and the air pipe or close the liquid pipe and the air pipe; the first port of the indoor heat exchanger is connected with the liquid pipe, and the second port of the indoor heat exchanger is connected with the air pipe; the first port of the outdoor heat exchanger is connected with the liquid pipe; the first port of the compressor is connected with the air pipe, and the second port of the compressor is connected with the second port of the outdoor heat exchanger; a memory storing a computer program; a processor coupled to the memory and the valve assembly, the processor executing a computer program to perform: acquiring switching information of a working mode of the air conditioner; and controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of the air pipe and the liquid pipe, and then opened according to the sequence of the air pipe and the liquid pipe.
The air conditioner provided by the invention is provided with a refrigerant switching device, an indoor heat exchanger, an outdoor heat exchanger, a compressor, a memory and a processor. The refrigerant switching device comprises a liquid pipe, an air pipe and a valve component. The air pipe is connected between the second port of the indoor heat exchanger and the first port of the compressor and used for conveying gas refrigerants. The liquid pipe is connected between the first port of the indoor heat exchanger and the first port of the outdoor heat exchanger and used for conveying liquid refrigerants. The valve component is arranged on the air pipe and the liquid pipe and used for opening or closing the air pipe and the liquid pipe.
When the air conditioner needs to be switched in working modes, the air pipe which is opened in the current working mode is controlled to be closed according to switching information, then the liquid pipe is controlled to be closed, so that the pressure in the liquid pipe is recovered to an initial value when the air conditioner is in a standby state, the refrigerant in the heat exchanger of the indoor unit is limited, after the pressure of the liquid pipe is determined to be stable, namely the liquid pipe is completely closed, the target working mode is controlled to be opened corresponding to the air pipe according to the switching information, so that pressure difference is formed in the pipeline, the liquid pipe is controlled to be opened, the refrigerant flow is recovered, and the refrigerant flow direction switching is completed. The working modes comprise a cooling mode and a heating mode. Therefore, in the switching process of the working modes, the air pipe and the liquid pipe are closed firstly to limit the refrigerant in the heat exchanger of the indoor unit, the refrigerant quantity to be balanced after the air pipe connected with the target working mode is communicated is reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
In addition, according to the air conditioner in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in the above technical solution, further, the first port of the compressor includes an exhaust port and an intake port; the trachea includes: the first pressure air pipe is connected between the exhaust port and the second port of the indoor heat exchanger; the second pressure air pipe is connected between the air suction port and the second port of the indoor heat exchanger; the pressure born by the first pressure air pipe is greater than the pressure born by the second pressure air pipe.
In this technical scheme, the trachea includes first pressure trachea and second pressure trachea, and the gas vent of compressor communicates with indoor heat exchanger through first pressure trachea, and the induction port of compressor communicates with indoor heat exchanger through second pressure trachea. The pressure born by the first pressure air pipe is greater than that born by the second pressure air pipe, namely one high-pressure air pipe and one low-pressure air pipe. Thereby realize the one-way circulation of refrigerant through controlling first pressure trachea and second pressure trachea, and then realize the refrigeration and the heating function of air conditioner, simple structure moreover, convenient assembling is convenient for control.
Specifically, when the air conditioner is in a heating mode, the first pressure air pipe and the liquid pipe are controlled to be opened, the second pressure air pipe is controlled to be closed, the compressor pressurizes a gaseous refrigerant, the gaseous refrigerant is made to be a high-temperature high-pressure refrigerant, the gaseous refrigerant is conveyed to the indoor heat exchanger through the first pressure air pipe to be condensed, liquefied and released, the heating purpose is achieved, the liquefied liquid refrigerant is depressurized and then enters the outdoor heat exchanger through the liquid pipe to absorb heat and be gasified, and the liquefied liquid refrigerant enters the compressor again after being gasified to circulate next time. When the air conditioner is in a refrigeration mode, the second pressure air pipe and the liquid pipe are controlled to be opened, the first pressure air pipe is controlled to be closed, the compressor pressurizes a gaseous refrigerant, the gaseous refrigerant is made to be a high-temperature high-pressure refrigerant and is conveyed to the outdoor heat exchanger to be liquefied and release heat, the liquid refrigerant in the outdoor heat exchanger is depressurized and then enters the indoor heat exchanger through the liquid pipe to be gasified and absorb heat, the refrigeration purpose is achieved, the gasified gaseous refrigerant is conveyed to the compressor to be pressurized again, and next circulation is conducted.
In any of the above solutions, further, the valve assembly includes: the first valve body is arranged on the liquid pipe and is configured to open or close the liquid pipe; the second valve body is arranged on the first pressure air pipe and is configured to open or close the first pressure air pipe; and the third valve body is arranged on the second pressure air pipe and is configured to open or close the second pressure air pipe.
In this solution, the valve assembly comprises: the first valve body, the second valve body and the third valve body are respectively arranged on the liquid pipe, the first pressure air pipe and the second pressure air pipe, so that the liquid pipe and the two air pipes can be independently controlled to be opened and closed, and the control is convenient.
Further, when the air conditioner is in a heating mode, the first valve body and the second valve body are opened, the third valve body is closed, so that the first pressure air pipe and the liquid pipe are opened, and the second pressure air pipe is disconnected. When the air conditioner is in a cooling mode, the first valve body and the third valve body are opened, the second valve body is closed, so that the second pressure air pipe and the liquid pipe are opened, and the first pressure air pipe is disconnected.
In any of the above technical solutions, further, when the processor executes the computer program, the step of controlling the valve assembly according to the switching information is executed, specifically including: according to the switching information of the air conditioner for switching from the cooling mode to the heating mode, the third valve body is controlled to be closed, and then the first valve body is controlled to be closed; controlling the second valve body to open based on the first time length for closing the first valve body reaching a first time length threshold value; and controlling the first valve body to open based on the second time length of the second valve body to reach the second time length threshold value.
In the technical scheme, when the refrigeration mode is switched to the heating mode, the third valve body is controlled to be closed firstly, so that the second pressure air pipe which is opened when the refrigeration mode is disconnected. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. When the first time length reaches a first time length threshold value, the liquid pipe is completely closed, the pressure in the liquid pipe is stabilized, the second valve body is controlled to be opened, the first pressure air pipe is opened, and the second time length for opening the second valve body is started to be timed. When the second time reaches the second time threshold, the pressure difference between the air pipe and the first pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the first pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
In any of the above technical solutions, further, when the processor executes the computer program, the step of controlling the valve assembly according to the switching information is executed, specifically including: according to the switching information of the air conditioner from the heating mode to the cooling mode, the second valve body is controlled to be closed, and then the first valve body is controlled to be closed; controlling the third valve body to be opened based on the first time length for closing the first valve body reaching a first time length threshold value; and controlling the first valve body to open based on the third time length for opening the third valve body reaching the third time length threshold value.
In the technical scheme, when the heating mode is switched to the cooling mode, the second valve body is controlled to be closed firstly, so that the first pressure air pipe which is opened in the heating mode is cut off. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. When the first period of time reaches the first period threshold, it indicates that the fluid line has been completely closed and the pressure in the fluid line has stabilized. And controlling the third valve body to be opened at the moment, so that the second pressure air pipe is opened, and starting to time the third time length for opening the third valve body. When the third time reaches the third time threshold, the pressure difference between the air pipe and the second pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the second pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
The first time length threshold value and the third time length threshold value can be reasonably set according to the parameters and requirements of the air conditioner.
In any of the above technical solutions, further, the first valve body, the second valve body and the third valve body are all proportional control valves; the processor is further used for executing a computer program to execute the step of controlling the opening of the second valve body or the third valve body, and specifically comprises the following steps: and adjusting the opening degree of the proportional control valve for multiple times according to the preset opening degree so as to enable the opening degree of the proportional control valve to reach an opening degree threshold value.
In the technical scheme, in the process of opening the second valve body or the third valve body, the opening degree of the proportional control valve is adjusted for multiple times according to the preset opening degree, so that the valve body is slowly opened to the opening degree threshold value, the stability in the pressure transition process is improved, the noise generated during the switching of the working modes is further reduced, and the use experience of a user is improved.
In addition, the first valve body can control the flow of the liquid pipe by adjusting the opening degree, so that an expansion valve used for throttling and decompressing between the indoor heat exchanger and the outdoor heat exchanger can be omitted, the system structure is simplified, and the cost is reduced.
According to a second aspect of the present invention, there is provided a control method of an air conditioner, comprising: acquiring switching information of a working mode of the air conditioner; and controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of the air pipe and the liquid pipe, and then opened according to the sequence of the air pipe and the liquid pipe.
In the technical scheme, when the air conditioner needs to be switched in working modes, the air pipe which is opened in the current working mode is controlled to be closed according to switching information, then the liquid pipe is controlled to be closed, so that the pressure in the liquid pipe is recovered to an initial value when the air conditioner is in a standby state, the refrigerant in the heat exchanger of the indoor unit is limited, the pressure stability of the liquid pipe is determined, namely after the liquid pipe is completely closed, the target working mode is controlled to be opened corresponding to the air pipe according to the switching information, so that pressure difference is formed in the pipeline, the liquid pipe is controlled to be opened again, the refrigerant flow is recovered, and the refrigerant flow direction switching is completed. The working modes comprise a cooling mode and a heating mode. Therefore, in the switching process of the working modes, the air pipe and the liquid pipe are closed firstly to limit the refrigerant in the heat exchanger of the indoor unit, the refrigerant quantity to be balanced after the air pipe connected with the target working mode is communicated is reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
In any of the above technical solutions, further, the valve assembly includes a first valve body, a second valve body, and a third valve body; the step of controlling the valve assembly according to the switching information specifically comprises: according to the switching information of the air conditioner for switching from the cooling mode to the heating mode, the third valve body is controlled to be closed, and then the first valve body is controlled to be closed; controlling the second valve body to open based on the first time length for closing the first valve body reaching a first time length threshold value; and controlling the first valve body to open based on the second time length of the second valve body to reach the second time length threshold value.
In the technical scheme, when the refrigeration mode is switched to the heating mode, the third valve body is controlled to be closed firstly, so that the second pressure air pipe which is opened when the refrigeration mode is disconnected. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. When the first time length reaches a first time length threshold value, the liquid pipe is completely closed, the pressure in the liquid pipe is stabilized, the second valve body is controlled to be opened, the first pressure air pipe is opened, and the second time length for opening the second valve body is started to be timed. When the second time reaches the second time threshold, the pressure difference between the air pipe and the first pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the first pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the process of communicating the air pipe and the liquid pipe is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
In any of the above technical solutions, further, the valve assembly includes a first valve body, a second valve body, and a third valve body; the step of controlling the valve assembly according to the switching information specifically comprises: according to the switching information of the air conditioner from the heating mode to the cooling mode, the second valve body is controlled to be closed, and then the first valve body is controlled to be closed; controlling the third valve body to be opened based on the first time length for closing the first valve body reaching a first time length threshold value; and controlling the first valve body to open based on the third time length for opening the third valve body reaching the third time length threshold value.
In the technical scheme, when the heating mode is switched to the cooling mode, the second valve body is controlled to be closed firstly, so that the first pressure air pipe which is opened in the heating mode is cut off. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. And when the first duration reaches a first duration threshold, the liquid pipe is completely closed, the pressure in the liquid pipe is stabilized, the third valve body is controlled to be opened at the moment, the second pressure air pipe is opened, and the third duration of opening of the third valve body is started to be timed. When the third time reaches the third time threshold, the pressure difference between the air pipe and the second pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the second pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
According to a third aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the control method of the air conditioner set forth in the second aspect. Therefore, the computer-readable storage medium has all the advantages of the control method of the air conditioner proposed by the second aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view illustrating an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view illustrating an air conditioner according to still another embodiment of the present invention;
fig. 3 is a schematic structural view illustrating an air conditioner according to still another embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention;
fig. 7 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention;
fig. 8 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
100 refrigerant switching device, 102 liquid pipe, 104 first pressure gas pipe, 106 second pressure gas pipe, 110 valve component, 112 first valve body, 114 second valve body, 116 third valve body, 210 indoor heat exchanger, 212 first port of indoor heat exchanger, 214 second port of indoor heat exchanger, 220 outdoor heat exchanger, 222 first port of outdoor heat exchanger, 230 compressor, 232 exhaust port, 234 suction port, 240 expansion valve.
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
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
An air conditioner, a control method of the air conditioner, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 8.
Example 1:
as shown in fig. 1 to 3, according to an embodiment of the present invention, there is provided an air conditioner including: the refrigerant switching device 100, the indoor heat exchanger 210, the outdoor heat exchanger 220, the compressor 230, a memory (not shown), and a processor (not shown).
In detail, the refrigerant switching device 100 includes a liquid pipe 102, an air pipe (a first pressure air pipe 104 and a second pressure air pipe 106), and a valve assembly 110, wherein the valve assembly 110 is disposed on the liquid pipe 102 and the air pipe, and the valve assembly 110 is configured to open the liquid pipe 102 and the air pipe or close the liquid pipe 102 and the air pipe. The first port 212 of the indoor heat exchanger is connected to the liquid pipe 102 and the second port 214 of the indoor heat exchanger is connected to the gas pipe. The first port 222 of the outdoor heat exchanger is connected to the liquid pipe 102. A first port (suction port 234 and discharge port 232) of the compressor is connected to the air pipe, and a second port of the compressor is connected to a second port of the outdoor heat exchanger. I.e., the gas line is connected between the second port 214 of the indoor heat exchanger and the first port of the compressor, and the liquid line 102 is connected between the first port 212 of the indoor heat exchanger and the first port 222 of the outdoor heat exchanger. A processor is coupled to the memory and valve assembly 110, the processor executing a computer program to perform: acquiring switching information of a working mode of the air conditioner; the valve assembly 110 is controlled according to the switching information so that the air tube and the liquid tube 102 are closed in the order of the air tube first and the liquid tube 102, and then opened in the order of the air tube first and the liquid tube 102.
In this embodiment, the air conditioner is provided with a refrigerant switching device 100, an indoor heat exchanger 210, an outdoor heat exchanger 220, a compressor 230, a memory, and a processor. The refrigerant switching device 100 includes a liquid pipe 102, a gas pipe, and a valve assembly 110. The air pipe is connected between the second port 214 of the indoor heat exchanger and the first port of the compressor to convey the gas refrigerant. The liquid pipe 102 is connected between the first port 212 of the indoor heat exchanger and the first port 222 of the outdoor heat exchanger for conveying the liquid refrigerant. A valve assembly 110 is provided on the air and liquid pipe 102 to open or close the air and liquid pipe 102.
When the air conditioner needs to switch the working modes, the air pipe which is opened in the current working mode is controlled to be closed according to the switching information, then the liquid pipe 102 is controlled to be closed, so that the pressure in the liquid pipe 102 is recovered to an initial value when the air conditioner is in a standby state, the refrigerant in the heat exchanger of the indoor unit is limited, the pressure stability of the liquid pipe 102 is determined, namely after the liquid pipe 102 is completely closed, the target working mode is controlled to be opened corresponding to the air pipe according to the switching information, so that pressure difference is formed in the pipeline, then the liquid pipe 102 is controlled to be opened, the refrigerant flow is recovered, and the refrigerant flow direction switching is completed. The working modes comprise a cooling mode and a heating mode. Therefore, in the switching process of the working modes, the air pipe and the liquid pipe 102 are closed to limit the refrigerant in the heat exchanger of the indoor unit, the refrigerant quantity to be balanced after the air pipe connected with the target working mode is communicated is reduced, and the refrigerant noise generated by the impact of high-pressure refrigerant and low-pressure refrigerant in the communication process of the air pipe and the liquid pipe is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor 230 is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
Example 2:
as shown in fig. 1 to 3, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the first port of the compressor includes an exhaust port 232 and an intake port 234, and the gas lines include a first pressurized gas line 104 and a second pressurized gas line 106.
In detail, the first pressure gas pipe 104 is connected between the exhaust port 232 and the second port 214 of the indoor heat exchanger. The second pressure gas pipe 106 is connected between the suction port 234 and the second port 214 of the indoor heat exchanger. The pressure of the first pressure air pipe 104 is greater than that of the second pressure air pipe 106.
In this embodiment, the air pipes include a first pressure air pipe 104 and a second pressure air pipe 106, an exhaust port 232 of the compressor 230 communicates with the indoor heat exchanger 210 through the first pressure air pipe 104, and a suction port 234 of the compressor 230 communicates with the indoor heat exchanger 210 through the second pressure air pipe 106. The pressure of the first pressure air pipe 104 is greater than that of the second pressure air pipe 106, i.e. one high pressure air pipe and one low pressure air pipe. Therefore, the unidirectional circulation of the refrigerant is realized by controlling the first pressure air pipe 104 and the second pressure air pipe 106, the refrigeration and heating functions of the air conditioner are further realized, and the air conditioner is simple in structure, convenient to assemble and convenient to control.
Specifically, when the air conditioner is in a heating mode, the first pressure air pipe 104 and the liquid pipe 102 are controlled to be opened, the second pressure air pipe 106 is controlled to be closed, the compressor 230 pressurizes a gaseous refrigerant, the gaseous refrigerant is changed into a high-temperature high-pressure refrigerant, the high-temperature high-pressure refrigerant is conveyed to the indoor heat exchanger 210 through the first pressure air pipe 104 under the action of pressure difference to be condensed, liquefied and released, and therefore the heating purpose is achieved, the liquefied liquid refrigerant is depressurized and then enters the outdoor heat exchanger 220 through the liquid pipe 102 to absorb heat and be gasified, and then enters the compressor 230 again after being gasified to perform the next circulation. When the air conditioner is in a refrigeration mode, the second pressure air pipe 106 and the liquid pipe 102 are controlled to be opened, the first pressure air pipe 104 is controlled to be closed, the compressor 230 pressurizes a gaseous refrigerant, the gaseous refrigerant is changed into a high-temperature high-pressure refrigerant and is conveyed to the outdoor heat exchanger 220 to be liquefied and released, the liquid refrigerant in the outdoor heat exchanger 220 is depressurized and then enters the indoor heat exchanger 210 through the liquid pipe 102 to be gasified and absorb heat, and therefore the refrigeration purpose is achieved, the gasified gaseous refrigerant is conveyed to the compressor 230 to be pressurized again, and next circulation is conducted.
Example 3:
as shown in fig. 1 and 2, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: the valve assembly 110 includes: a first valve body 112, a second valve body 114, and a third valve body 116.
In detail, the first valve body 112 is disposed at the liquid pipe 102 for opening or closing the liquid pipe 102. The second valve 114 is disposed in the first pressure air pipe 104 for opening or closing the first pressure air pipe 104, and the third valve 116 is disposed in the second pressure air pipe 106 for opening or closing the second pressure air pipe 106.
In this embodiment, the valve assembly 110 includes: the first valve body 112, the second valve body 114 and the third valve body 116 are respectively arranged on the liquid pipe 102, the first pressure air pipe 104 and the second pressure air pipe 106, so that the opening and closing of the liquid pipe 102 and the two air pipes can be independently controlled, and the control is convenient.
Further, when the air conditioner is in the heating mode, the first valve 112 and the second valve 114 are opened, the third valve 116 is closed, so that the first pressure air pipe 104 and the liquid pipe 102 are opened, and the second pressure air pipe 106 is disconnected. When the air conditioner is in the cooling mode, the first valve body 112 and the third valve body 116 are opened, the second valve body 114 is closed, so that the second pressure air pipe 106 and the liquid pipe 102 are opened, and the first pressure air pipe 104 is disconnected.
It is understood that the first valve body 112, the second valve body 114 and the third valve body 116 may be ordinary on-off valve bodies, or may be proportional control valves capable of adjusting opening degrees, such as electric ball valves, electronic expansion valves, etc., or may be a combination of a plurality of on-off valve bodies (such as electromagnetic valves) with different calibers. In addition, since the first pressure gas pipe 104 and the second pressure gas pipe 106 are connected to the second port 214 of the indoor heat exchanger, the second valve body 114 and the third valve body 116 may be replaced by a three-way valve.
Further, the processor, when executing the computer program, performs the step of controlling the valve assembly 110 according to the switching information, which specifically includes: according to the switching information of the air conditioner from the cooling mode to the heating mode, the third valve body 116 is controlled to be closed, and then the first valve body 112 is controlled to be closed; controlling the second valve body 114 to open based on the first time period for which the first valve body 112 is closed reaching the first time period threshold; the first valve body 112 is controlled to open based on the second length of time that the second valve body 114 is open reaching a second length of time threshold.
Specifically, when the cooling mode is switched to the heating mode, the third valve 116 is first controlled to close, so as to disconnect the second pressure air pipe 106 that is opened in the cooling mode. The first valve body 112 is controlled to close, so that the liquid pipe 102 is closed, and the first time period for closing the first valve body 112 is started to be timed. When the first period of time reaches the first period threshold, indicating that the fluid line 102 is fully closed, the pressure in the fluid line 102 has stabilized. At this time, the second valve body 114 is controlled to open, so that the first pressure air pipe 104 is opened, and the second time period for opening the second valve body 114 is started to be counted. When the second duration reaches the second duration threshold, which indicates that the pressure difference between the air pipe and the first pressure air pipe 104 is formed and stable, the liquid pipe 102 is opened by controlling the first valve body 112, so that the switching of the refrigerant flow direction is realized. Therefore, the refrigerant amount to be balanced after the first pressure air pipe 104 is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor 230 is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
Still further, the processor, when executing the computer program, performs the step of controlling the valve assembly 110 according to the switching information, which specifically includes: according to the switching information of the air conditioner from the heating mode to the cooling mode, the second valve body 114 is controlled to be closed, and then the first valve body 112 is controlled to be closed; controlling the third valve body 116 to open based on the first time period for which the first valve body 112 is closed reaching a first time period threshold; the first valve body 112 is controlled to open based on the third duration for which the third valve body 116 is open reaching a third duration threshold.
Specifically, when the heating mode is switched to the cooling mode, the second valve 114 is controlled to close to disconnect the first pressure air pipe 104 which is opened in the heating mode. The first valve body 112 is controlled to close, so that the liquid pipe 102 is closed, and the first time period for closing the first valve body 112 is started to be timed. When the first duration reaches the first duration threshold, indicating that the liquid line 102 is completely closed and the pressure in the liquid line 102 has stabilized, the third valve 116 is controlled to open, such that the second pressure gas line 106 is opened, and the third duration for which the third valve 116 is opened is started. When the third time length reaches the third time length threshold value, which indicates that the pressure difference between the air pipe and the second pressure air pipe 106 is formed and stable, the liquid pipe 102 is opened by controlling the first valve body 112, so that the switching of the refrigerant flow direction is realized. Therefore, the amount of refrigerant to be balanced after the second pressure air pipe 106 is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure refrigerant and low-pressure refrigerant in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor 230 is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
The first time length threshold, the second time length threshold and the third time length threshold can be reasonably set according to parameters and requirements of the air conditioner, and the first time length threshold can be set within the range of 0-3 min, such as 0.1s, 0.5s, 1s, 60s and the like.
Example 4:
according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the first valve body, the second valve body and the third valve body are all proportional control valves.
Specifically, the processor is further configured to execute a computer program to perform the step of controlling the opening of the second valve body or the third valve body, and specifically includes: and adjusting the opening degree of the proportional control valve for multiple times according to the preset opening degree so as to enable the opening degree of the proportional control valve to reach an opening degree threshold value.
In the embodiment, in the process of opening the second valve body or the third valve body, the opening degree of the proportional control valve is adjusted for multiple times according to the preset opening degree, so that the valve body is slowly opened to the opening degree threshold value, the stability in the pressure transition process is improved, the noise generated during the switching of the working modes is further reduced, and the use experience of a user is improved.
For example, the indoor unit is switched from a cooling mode to a heating mode, when the first pressure air pipe is opened, the second valve body is controlled to be opened to a preset opening degree, the second valve body is opened to be fully opened after the maintaining time reaches the second duration threshold, then the first valve body of the liquid pipe is opened, and the switching from the cooling mode to the heating mode is completed. Of course, the preset opening degrees in the opening process may be multiple, multiple preset opening degrees may be the same or different, the maintaining time corresponding to each preset opening degree may be the same or different, and the sum of the maintaining time corresponding to the multiple preset opening degrees is reasonably set according to the second duration threshold.
In addition, as shown in fig. 2, since the first valve body 112 can control the flow rate of the liquid pipe 102 by adjusting the opening degree, an expansion valve for throttling and decompressing between the indoor and outdoor heat exchangers can be omitted, thereby simplifying the system structure and reducing the cost. Similarly, as shown in fig. 3, an expansion valve 240 for throttling and reducing pressure between the indoor and outdoor heat exchangers is used instead of the first valve body.
Example 5:
as shown in fig. 4, according to an embodiment of a second aspect of the present invention, there is provided a control method of an air conditioner, the method including:
step 302, acquiring switching information of the working mode of the air conditioner;
and step 304, controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of the air pipe first and the liquid pipe second, and then opened according to the sequence of the air pipe first and the liquid pipe second.
In this embodiment, when it is detected that the air conditioner needs to switch the working mode, the air pipe opened in the current working mode is first controlled to be closed according to the switching information, then the liquid pipe is controlled to be closed, so that the pressure in the liquid pipe is restored to the initial value when the air conditioner is in the standby state, and the refrigerant in the heat exchanger of the indoor unit is limited. The working modes comprise a cooling mode and a heating mode. Therefore, in the switching process of the working modes, the air pipe and the liquid pipe are closed firstly to limit the refrigerant in the heat exchanger of the indoor unit, the refrigerant quantity to be balanced after the air pipe connected with the target working mode is communicated is reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process of the air pipe and the liquid pipe is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
Example 6:
as shown in fig. 5, according to an embodiment of the present invention, there is provided a control method of an air conditioner, the method including:
step 402, acquiring switching information of the working mode of the air conditioner;
step 404, controlling the third valve body to close and then controlling the first valve body to close according to the switching information of the air conditioner from the cooling mode to the heating mode;
step 406, timing a first time length for closing the first valve body;
step 408, determining whether the first duration reaches a first duration threshold, if so, entering step 410, and if not, entering step 406;
step 410, controlling the second valve body to open, and timing a second time length for opening the second valve body;
step 412, determining whether the second duration reaches a second duration threshold, if yes, entering step 414, and if not, entering step 410;
step 414, controlling the first valve body to open.
In this embodiment, when the cooling mode is switched to the heating mode, the third valve body is controlled to close to disconnect the second pressure air pipe which is opened in the cooling mode. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. When the first time length reaches a first time length threshold value, the liquid pipe is completely closed, the pressure in the liquid pipe is stabilized, the second valve body is controlled to be opened, the first pressure air pipe is opened, and the second time length for opening the second valve body is started to be timed. When the second time reaches the second time threshold, the pressure difference between the air pipe and the first pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the first pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced. Meanwhile, the switching of the refrigerant flow paths can be realized without limiting the refrigerant flow, the duration of the switching process is greatly shortened, the operation stability of the compressor is ensured, the refrigerating or heating effect of the air conditioner is improved, and the reliability of the air conditioner is improved.
Example 7:
as shown in fig. 6, according to an embodiment of the present invention, there is provided a control method of an air conditioner, the method including:
502, acquiring switching information of the working mode of the air conditioner;
step 504, controlling the second valve body to close and then controlling the first valve body to close according to switching information of the air conditioner from the heating mode to the cooling mode;
step 506, timing a first time length for closing the first valve body;
step 508, whether the first duration reaches a first duration threshold value, if yes, go to step 510, if no, go to step 506;
step 510, controlling the third valve body to be opened, and timing a third time length for opening the third valve body;
step 512, judging whether the third duration reaches a third duration threshold, if so, entering step 514, and if not, entering step 510;
and step 512, controlling the first valve body to open.
In this embodiment, when the heating mode is switched to the cooling mode, the second valve body is controlled to close to disconnect the first pressure air pipe which is opened in the heating mode. And then controlling the first valve body to close so that the liquid pipe is closed, and starting timing the first time length for closing the first valve body. And when the first duration reaches a first duration threshold, the liquid pipe is completely closed, the pressure in the liquid pipe is stabilized, the third valve body is controlled to be opened at the moment, the second pressure air pipe is opened, and the third duration of opening of the third valve body is started to be timed. When the third time reaches the third time threshold, the pressure difference between the air pipe and the second pressure air pipe fitting is formed and stable, and the liquid pipe is opened by controlling the first valve body, so that the flow direction of the refrigerant is switched. Therefore, the refrigerant quantity to be balanced after the second pressure air pipe is communicated is effectively reduced, and the refrigerant noise generated by impact of high-pressure and low-pressure refrigerants in the communication process is reduced.
Example 8:
as shown in fig. 7, according to an embodiment of the present invention, there is provided a control method of an air conditioner, in which a third valve body of the air conditioner is a proportional control valve, the method including:
step 602, acquiring switching information of the working mode of the air conditioner;
step 604, controlling the second valve body to close and then controlling the first valve body to close according to the switching information of the air conditioner from the heating mode to the cooling mode;
step 606, timing a first time length for closing the first valve body;
step 608, determining whether the first duration reaches a first duration threshold, if yes, going to step 610, and if not, going to step 606;
step 610, controlling the third valve body to be opened, and adjusting the opening degree of the third valve body for multiple times according to the preset opening degree;
step 612, timing a third duration for opening the third valve body;
step 614, whether the third time length reaches a third time length threshold value is judged, if yes, the step 616 is carried out, and if not, the step 612 is carried out;
step 616, controlling the first valve body to open.
In this embodiment, the indoor unit switches from the heating mode to the cooling mode, when the second pressure air pipe is opened, that is, in the process of opening the third valve body, the opening degree of the second valve body is adjusted multiple times according to the preset opening degree, specifically, the third valve body is controlled to be opened to the first preset opening degree first, after the maintaining time for opening the third valve body according to the first preset opening degree reaches the time threshold corresponding to the first preset opening degree, the opening degree of the third valve body is continuously increased according to the next preset opening degree, the operation is continuously performed until the third valve body is slowly opened to the opening degree threshold, and then the first valve body of the liquid pipe is opened, so that the switching from the heating mode to the cooling mode is completed. Thereby improve the stability in the pressure transition process, the noise that produces when further reducing the mode switch promotes user's use and experiences.
It can be understood that the preset opening degrees in the opening process may be multiple, multiple preset opening degrees may be the same or different, the maintaining time corresponding to each preset opening degree may also be the same or different, and the sum of the maintaining time corresponding to the multiple preset opening degrees is reasonably set according to the third duration threshold.
Example 9:
as shown in fig. 8, according to an embodiment of the present invention, there is provided a control method of an air conditioner, in which a second valve body of the air conditioner is a proportional control valve, the method including:
step 702, acquiring switching information of the working mode of the air conditioner;
step 704, controlling the third valve body to close and then controlling the first valve body to close according to the switching information of the air conditioner from the cooling mode to the heating mode;
step 706, timing a first time length for closing the first valve body;
step 708, determining whether the first duration reaches a first duration threshold, if so, entering step 710, and if not, entering step 706;
step 710, controlling the second valve body to be opened, and adjusting the opening degree of the second valve body for multiple times according to the preset opening degree;
step 712, timing a second duration of time for opening the second valve body;
step 714, whether the second duration reaches a second duration threshold value, if yes, go to step 716, otherwise, go to step 712;
step 716, controlling the first valve body to open.
In this embodiment, the indoor unit switches from the cooling mode to the heating mode, and when the first pressure air pipe is opened, that is, in the process of opening the second valve body, the opening degree of the second valve body is adjusted multiple times according to the preset opening degree. Specifically, the second valve body is controlled to be opened to a first preset opening degree, after the maintaining time of the second valve body opening according to the first preset opening degree reaches a time threshold corresponding to the first preset opening degree, the opening degree of the second valve body is continuously increased according to the next preset opening degree, the process is circulated continuously until the second valve body is slowly opened to the opening degree threshold, then the first valve body of the liquid pipe is opened, and the mode switching from cooling to heating is completed. Thereby improve the stability in the pressure transition process, the noise that produces when further reducing the mode switch promotes user's use and experiences.
It should be noted that the sum of the holding times corresponding to the plurality of preset opening degrees is reasonably set according to the second duration threshold.
Example 10:
according to an embodiment of the present invention, a method for controlling an air conditioner is provided.
Specifically, as shown in fig. 2, an air pipe (a first port 212 of the indoor heat exchanger) and a liquid pipe (a second port 214 of the indoor heat exchanger) of the heat exchanger of the indoor unit are respectively connected to an indoor air pipe (a first pressure air pipe 104 and a second pressure air pipe 106) and a liquid pipe 102 of the switching device (the refrigerant switching device 100); the switching device outdoor side medium pressure liquid pipe 102, the high pressure gas pipe (first pressure gas pipe 104), and the low pressure gas pipe (second pressure gas pipe 106) are connected to a liquid pipe of the heat exchanger of the outdoor unit (first port 222 of the outdoor heat exchanger), a high pressure gas pipe (discharge port 232), and a low pressure gas pipe (suction port 234), respectively. The switching device is connected to the indoor side liquid pipe through an electric ball valve (first valve body 112) and connected to the outdoor side medium pressure liquid pipe 102, and the indoor side gas pipe is connected to the outdoor side high pressure gas pipe and the low pressure gas pipe through electric ball valves (second valve body 114 and third valve body 116).
When the indoor unit heat exchanger operates in a refrigeration mode, the switching device enables the electric ball valve on the medium-pressure liquid pipe 102 on the outdoor side to be opened, the indoor side of the switching device is communicated with the liquid pipe 102 on the outdoor side, the electric ball valve on the low-pressure gas pipe on the outdoor side is opened, the electric ball valve on the high-pressure gas pipe is closed, and the indoor side gas pipe of the switching device is communicated with the low-pressure gas pipe on the outdoor side. The refrigerant flows into the heat exchanger of the indoor unit from the medium-pressure liquid pipe 102 and then flows out from the low-pressure air pipe.
When the heat exchanger of the indoor unit operates in a heating mode, the switching device enables the electric ball valve on the indoor side liquid pipe 102 to be opened, the indoor side of the switching device is communicated with the outdoor side liquid pipe 102, the electric ball valve on the outdoor side high-pressure gas pipe is opened, the electric ball valve on the outdoor side low-pressure gas pipe is closed, and the indoor side gas pipe is communicated with the outdoor side high-pressure gas pipe. The refrigerant flows into the indoor heat exchanger from the high-pressure air pipe and then flows out from the outdoor liquid pipe 102.
The indoor unit is switched from a cooling mode to a heating mode, and an indoor unit air pipe needs to be switched from an originally communicated outdoor low-pressure air pipe to an outdoor high-pressure air pipe. Under the action of the pressure difference, the refrigerant of the indoor unit flows from the original liquid pipe 102 to the air pipe, and then flows to the liquid pipe 102. When the switching device performs switching, the electric ball valve of the outdoor low-pressure air pipe is closed, then the electric ball valve on the liquid pipe 102 is closed, then the valve body on the outdoor high-pressure air pipe is opened to the opening degree A, the valve body is opened to full opening after the time ta is maintained, and finally the valve body of the liquid pipe 102 is opened, so that the mode switching from cooling to heating is completed.
The indoor unit is switched from a heating mode to a cooling mode, and an air pipe of the indoor unit needs to be switched from an originally communicated outdoor high-pressure air pipe to an outdoor low-pressure air pipe. Under the action of the pressure difference, the refrigerant of the indoor unit flows from the original air pipe to the liquid pipe 102 to change the flow direction of the liquid pipe 102 to the air pipe. When the switching device performs switching, the electric ball valve of the outdoor high-pressure air pipe is closed, then the electric ball valve on the outdoor liquid pipe 102 is closed, then the valve body on the outdoor low-pressure air pipe is opened to the opening degree B, the valve body is opened to full opening after the time tb is maintained, and finally the valve body of the liquid pipe 102 is opened, so that the mode switching from heating to refrigerating is completed.
As shown in fig. 3, the control of the electric ball valve can be realized by an indoor machine liquid pipe expansion valve 240 (a heating or cooling system throttling electric expansion valve) instead.
Further, the air conditioner can be a household air conditioner, and can also be an air conditioning unit consisting of one outdoor unit and a plurality of indoor units. It can be understood that the switching device may be a single switching device or a plurality of switching devices connected in parallel, that is, in the air conditioning unit, each indoor unit is connected with a corresponding switching device.
The valve bodies used by the high-pressure air pipe and the low-pressure air pipe of the switching device can be valve bodies with adjustable opening degrees, and comprise electric ball valves, electronic expansion valves and the like. Or a plurality of on-off valve bodies (such as electromagnetic valves) with different calibers can be combined in parallel to replace the valve bodies, the small-caliber valve body is opened during balancing, and the large-caliber valve body is opened after balancing is finished. As shown in fig. 3, the valve body of the liquid pipe 102 of the shutoff switching device can be placed in the switching device, or can be replaced by an electronic expansion valve on the liquid pipe of the indoor unit (the second port 214 of the indoor heat exchanger).
In this embodiment, in the switching process, the gas pipe connected before switching is firstly turned off, then the liquid pipe 102 is turned off, then the gas pipe to be connected after switching is slowly connected, and finally the liquid pipe 102 is opened to recover the flow of the refrigerant, thereby completing the switching of the flow direction of the refrigerant. Therefore, the refrigerant inside the heat exchanger of the indoor unit is limited, the refrigerant quantity to be balanced after the air pipes connected in the latter mode are communicated is reduced, the refrigerant noise generated in the communication process is reduced, and meanwhile, the duration time of the switching process can be shortened.
Example 11:
according to an embodiment of the third aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the control method of the air conditioner set forth in the second aspect. Therefore, the computer readable storage medium has all the advantages of the control method of the air conditioner proposed in the second aspect, and will not be described herein again.
In the description herein, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly stated or limited otherwise; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An air conditioner, comprising:
the refrigerant switching device comprises a liquid pipe, an air pipe and a valve assembly, wherein the valve assembly is arranged on the liquid pipe and the air pipe and is configured to open the liquid pipe and the air pipe or close the liquid pipe and the air pipe;
a first port of the indoor heat exchanger is connected with the liquid pipe, and a second port of the indoor heat exchanger is connected with the air pipe;
the first port of the outdoor heat exchanger is connected with the liquid pipe;
a first port of the compressor is connected with the air pipe, and a second port of the compressor is connected with a second port of the outdoor heat exchanger;
a memory storing a computer program;
a processor connected with the memory and the valve assembly, the processor executing the computer program to perform:
acquiring switching information of the working mode of the air conditioner;
and controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of firstly opening the air pipe and then opening the liquid pipe.
2. The air conditioner of claim 1, wherein the first port of the compressor includes a discharge port and a suction port; the trachea includes:
a first pressure gas pipe connected between the exhaust port and the second port of the indoor heat exchanger;
the second pressure air pipe is connected between the air suction port and the second port of the indoor heat exchanger;
the pressure born by the first pressure air pipe is greater than the pressure born by the second pressure air pipe.
3. The air conditioner of claim 2, wherein the valve assembly comprises:
a first valve body disposed on the liquid pipe, the first valve body being configured to open or close the liquid pipe;
the second valve body is arranged on the first pressure air pipe and is configured to open or close the first pressure air pipe;
and the third valve body is arranged on the second pressure air pipe and is configured to open or close the second pressure air pipe.
4. The air conditioner of claim 3, wherein the processor, when executing the computer program, performs the step of controlling the valve assembly according to the switching information, in particular comprising:
according to the switching information of the air conditioner from the cooling mode to the heating mode, controlling the third valve body to be closed, and then controlling the first valve body to be closed;
controlling the second valve body to open based on a first time length for closing the first valve body reaching a first time length threshold;
and controlling the first valve body to open based on the second time length for opening the second valve body reaching a second time length threshold value.
5. The air conditioner of claim 3, wherein the processor, when executing the computer program, performs the step of controlling the valve assembly according to the switching information, in particular comprising:
controlling the second valve body to close and then controlling the first valve body to close according to switching information of the air conditioner from a heating mode to a cooling mode;
controlling the third valve body to be opened based on the first time length for closing the first valve body reaching a first time length threshold value;
and controlling the first valve body to open based on the third time length for opening the third valve body reaching a third time length threshold value.
6. The air conditioner according to any one of claims 3 to 5,
the first valve body, the second valve body and the third valve body are all proportional control valves;
the processor is further configured to execute the computer program to perform the step of controlling the second valve body or the third valve body to open, and specifically includes:
and adjusting the opening degree of the proportional control valve for multiple times according to the preset opening degree so as to enable the opening degree of the proportional control valve to reach an opening degree threshold value.
7. A control method of an air conditioner for the air conditioner according to any one of claims 1 to 6, characterized by comprising:
acquiring switching information of the working mode of the air conditioner;
and controlling the valve assembly according to the switching information so that the air pipe and the liquid pipe are closed according to the sequence of firstly opening the air pipe and then opening the liquid pipe.
8. The control method of an air conditioner according to claim 7, wherein the valve assembly includes a first valve body, a second valve body, and a third valve body; the step of controlling the valve assembly according to the switching information specifically includes:
according to the switching information of the air conditioner from the cooling mode to the heating mode, controlling the third valve body to be closed, and then controlling the first valve body to be closed;
controlling the second valve body to open based on a first time length for closing the first valve body reaching a first time length threshold;
and controlling the first valve body to open based on the second time length for opening the second valve body reaching a second time length threshold value.
9. The control method of an air conditioner according to claim 7, wherein the valve assembly includes a first valve body, a second valve body, and a third valve body; the step of controlling the valve assembly according to the switching information specifically includes:
controlling the second valve body to close and then controlling the first valve body to close according to switching information of the air conditioner from a heating mode to a cooling mode;
controlling the third valve body to be opened based on the first time length for closing the first valve body reaching a first time length threshold value;
and controlling the first valve body to open based on the third time length for opening the third valve body reaching a third time length threshold value.
10. A computer-readable storage medium on which a computer program is stored, the computer program being characterized by executing the control method of the air conditioner according to any one of claims 7 to 9 when executed by a processor.
CN202010998871.2A 2020-09-22 2020-09-22 Air conditioner, control method, and computer-readable storage medium Active CN112178893B (en)

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EP20955051.6A EP4130597A4 (en) 2020-09-22 2020-12-11 Air conditioner, control method and computer-readable storage medium
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Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
KR20060029566A (en) * 2004-10-02 2006-04-06 삼성전자주식회사 Air condirioner and method of controlling the same
KR100645812B1 (en) * 2005-01-28 2006-11-23 엘지전자 주식회사 A noise suppresser of a room cooler with a bunch fluid tube
CN102192583B (en) * 2010-03-12 2013-04-03 珠海格力电器股份有限公司 Air-conditioner and method for switching working mode of air-conditioner
CN102072600A (en) * 2010-12-15 2011-05-25 广东美的电器股份有限公司 Refrigerant flow direction switching and flow controlling device and method
CN104006584B (en) * 2013-02-26 2017-03-08 广东美的暖通设备有限公司 Three control air-conditionings and its refrigerant flow to switching device
CN105509362A (en) * 2015-12-22 2016-04-20 广东志高暖通设备股份有限公司 Multi-connected environment treatment system
CN106152406B (en) * 2016-07-04 2019-06-25 珠海格力电器股份有限公司 A kind of control method of air-conditioning system and its cold and hot pattern switching
JP6551437B2 (en) * 2017-02-28 2019-07-31 ダイキン工業株式会社 air conditioner
JP6591682B2 (en) * 2017-04-27 2019-10-16 日立ジョンソンコントロールズ空調株式会社 Refrigerant flow path switching unit and air conditioner
CN107238161B (en) * 2017-07-25 2020-05-08 广东美的暖通设备有限公司 Multi-split system and mode switching control method thereof
CN108489134A (en) * 2018-04-09 2018-09-04 珠海格力电器股份有限公司 Air-conditioning system
CN109631424A (en) * 2018-12-06 2019-04-16 珠海格力电器股份有限公司 Coolant distributor, three-pipe heating and reclaiming air-conditioning system and its control method
CN111237880A (en) * 2020-03-02 2020-06-05 青岛海信日立空调系统有限公司 Heat recovery multi-split air conditioner

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