CN110542227A - Air conditioner, control method and device thereof, and computer-readable storage medium - Google Patents

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

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Publication number
CN110542227A
CN110542227A CN201910866035.6A CN201910866035A CN110542227A CN 110542227 A CN110542227 A CN 110542227A CN 201910866035 A CN201910866035 A CN 201910866035A CN 110542227 A CN110542227 A CN 110542227A
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CN
China
Prior art keywords
pipeline
air conditioner
compressor
switching device
controlling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910866035.6A
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Chinese (zh)
Other versions
CN110542227B (en
Inventor
朱兴丹
徐振坤
白崇俨
杜顺开
喻广南
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 Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201910866035.6A priority Critical patent/CN110542227B/en
Publication of CN110542227A publication Critical patent/CN110542227A/en
Application granted granted Critical
Publication of CN110542227B publication Critical patent/CN110542227B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24F11/70—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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

the invention provides an air conditioner and a control method, a control device and a computer readable storage medium thereof, wherein a first switch device is arranged on a first pipeline and used for controlling the on-off of the first pipeline, or is arranged on a second pipeline and used for controlling the on-off of the second pipeline; and responding to a shutdown instruction, closing the throttling mechanism, continuing to operate the compressor, and opening the first switching device so as to disconnect the third pipeline and connect the pipeline where the first switching device is located. The air conditioner provided by the invention can keep the distribution state of the refrigerant in the stable operation of refrigeration or heating, thereby accelerating the establishment of the high-low pressure difference of system balance when the air conditioner is started next time, and improving the refrigeration and heating speed of the air conditioner.

Description

Air conditioner, control method and device thereof, and computer-readable storage medium
Technical Field
the present invention relates to the field of refrigeration equipment, and more particularly, to an air conditioner, a control method thereof, a control device thereof, and a computer-readable storage medium.
Background
When the air conditioner reaches a stable operation state, the refrigerant quantity of the high-pressure side is relatively large, and the refrigerant quantity of the low-pressure side is relatively small. Before the air conditioner is started, the pressure at each part of the system is equal, so that the high-low pressure difference of the system needs to be reestablished for a long time, and the refrigerating and heating speed of the air conditioner is slow after the air conditioner is started. At present, various manufacturers mainly adopt a high-frequency starting or rapid frequency increasing mode of a compressor to increase the refrigerating and heating speed of an air conditioner.
when the compressor is started at a high frequency or is quickly increased in frequency, the refrigerant on the evaporator side is quickly sucked completely in a short time, the refrigerant on the condenser side cannot be completely liquefied in a short time, and an effective liquid seal is difficult to form at the throttling mechanism, so that the refrigerant flow passing through the throttling mechanism is greatly reduced, the refrigerant cannot be timely supplemented to the evaporator side, and the refrigerating and heating speed of the air conditioner is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, a first aspect of the present invention is directed to an air conditioner.
a second aspect of the invention aims to provide a control method.
A third aspect of the present invention is directed to a control apparatus.
A fourth aspect of the present invention is directed to an air conditioner.
A fifth aspect of the present invention is directed to a computer-readable storage medium.
To achieve the above object, an aspect of the present invention provides an air conditioner, including: a compressor having an exhaust port and an intake port; the reversing component is provided with first to fourth ports, the first port is connected with the exhaust port, and the third port is connected with the suction port; the first end of the outdoor heat exchanger is connected with the second port through a first pipeline, and the first end of the indoor heat exchanger is connected with the fourth port through a second pipeline; the second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through a third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline; the first switching device is arranged on the first pipeline and used for controlling the on-off of the first pipeline, or is arranged on the second pipeline and used for controlling the on-off of the second pipeline; a controller electrically connected to the throttling mechanism and the first switching device, respectively, the controller configured to: and responding to a shutdown instruction, controlling the throttle mechanism to be closed, controlling the compressor to continue to operate, and controlling the first switching device to be opened so as to disconnect the third pipeline and connect the pipeline where the first switching device is located.
In the air conditioner provided by the technical scheme of the invention, in response to a shutdown instruction, the controller controls the throttle mechanism to be closed, so that the third pipeline is disconnected, the compressor is kept to continue to operate, the first switching device is opened, the pipeline where the first switching device is located is conducted, and thus, a refrigerant discharged from the exhaust port of the compressor is stored in the outdoor heat exchanger or the indoor heat exchanger.
In addition, the air conditioner provided by the technical scheme of the invention also has the following additional technical characteristics:
in one embodiment, the first switch device includes a first one-way electromagnetic cut-off valve or a first two-way electromagnetic cut-off valve.
The first bidirectional electromagnetic stop valve or the first one-way electromagnetic stop valve can realize the control of the on-off of the first pipeline or the second pipeline, and the control of the first one-way electromagnetic stop valve is simpler and has lower cost.
In one embodiment, the throttling mechanism comprises a cut-off throttling mechanism which can be cut off.
The cut-off throttling mechanism has a cut-off function, so that the cut-off throttling mechanism can control the on-off of the third pipeline, and a switch device for controlling the third pipeline is not needed to be arranged at the moment, so that the structure of the air conditioner is further simplified, and the cost of the air conditioner is reduced.
In one embodiment, the stop throttle mechanism comprises an electronic expansion valve.
The electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.
in one embodiment, the throttling mechanism includes a throttling mechanism body and a second switching device, which are connected in series, the third pipeline is divided into a first sub-pipeline and a second sub-pipeline by the throttling mechanism body, the second switching device is disposed on the first sub-pipeline, and the second switching device is electrically connected to the controller, so that the first sub-pipeline is turned on or off by receiving a control signal sent by the controller, or the second switching device is disposed on the second sub-pipeline, and the second switching device is electrically connected to the controller, so that the second sub-pipeline is turned on or off by receiving the control signal sent by the controller.
The throttle mechanism body can have a stop function, and at the moment, the throttle mechanism body can also be used for controlling the on-off of the third pipeline, for example, the throttle mechanism body is an electronic expansion valve; the throttle body may also have no shut-off function, for example, the throttle body is a capillary tube or a thermostatic expansion valve.
The on-off control of the third pipeline is realized through the combination of the throttling mechanism body and the second switch device, so that the refrigerant can be stored in the outdoor heat exchanger or the indoor heat exchanger when the air conditioner is shut down and the compressor continues to operate, and the refrigerating or heating speed is accelerated when the air conditioner is started next time.
In one embodiment, the second switch device comprises a second one-way electromagnetic cut-off valve or a second two-way electromagnetic cut-off valve.
The on-off control of the third pipeline can be realized through the second one-way electromagnetic stop valve or the second bidirectional electromagnetic stop valve, for example, the on-off control of the first sub-pipeline is realized through the second switch device when the second switch device is positioned on the first sub-pipeline, and the on-off control of the second sub-pipeline is realized through the second switch device when the second switch device is positioned on the second sub-pipeline.
In one embodiment, the throttle body includes a capillary tube, an electronic expansion valve, or a thermal expansion valve.
The capillary tube and the thermostatic expansion valve have simple structures and low cost, and the electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.
An aspect of a second aspect of the present invention provides a control method for controlling an air conditioner according to any one of the aspects of the first aspect, the control method including: responding to a shutdown instruction, controlling the throttle mechanism to be closed, controlling the compressor to continue to operate, and controlling the first switching device to be opened so as to disconnect the third pipeline, wherein the pipeline where the first switching device is located is conducted; the second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through the third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline.
In the control method provided by the technical scheme of the second aspect of the invention, the throttling mechanism is controlled to be closed in response to the shutdown instruction, so that the third pipeline is disconnected, the compressor is kept to continue to operate, the first switching device is opened, the pipeline where the first switching device is located is conducted, and thus, the refrigerant discharged from the exhaust port of the compressor is stored in the indoor heat exchanger or the outdoor heat exchanger.
In one embodiment, after responding to the shutdown instruction, controlling the throttle mechanism to close, controlling the compressor to continue to operate, and controlling the first switching device to open, the control method further includes: and after the working condition parameters of the air conditioner meet preset conditions, controlling the compressor to stop running, and controlling the first switching device to be closed so as to disconnect the pipeline where the first switching device is located.
The working condition parameters of the air conditioner are detected, whether the working condition parameters meet preset conditions or not is judged, and when the working condition parameters meet the preset conditions, the first switching device is controlled to be turned off, so that the first pipeline or the second pipeline where the first switching device is located is turned off, the compressor is controlled to stop running, a refrigerant is stored in the outdoor heat exchanger or the indoor heat exchanger, the time for the refrigerant to run to a stable state when the air conditioner is started next time is shortened, and the refrigerating and heating speed is increased.
In one embodiment, the operating condition parameters of the air conditioner meet preset conditions, and specifically include: the air conditioner is shut down when running in a refrigeration mode, and any one of the continuous running time of the compressor is longer than a first preset time, the suction pressure of the compressor is lower than a first preset pressure, and the suction temperature of the compressor is lower than a first preset temperature; the air conditioner is shut down when running in a heating mode, and any one of the continuous running time of the compressor is longer than a second preset time, the suction pressure of the compressor is lower than a second preset pressure, and the suction temperature of the compressor is lower than a second preset temperature; the first preset time is equal to or different from the second preset time, the first preset pressure is equal to or different from the second preset pressure, and the first preset temperature is equal to or different from the second preset temperature.
The operating condition parameters include the length of time the compressor continues to operate, the suction pressure of the compressor, which refers to the pressure at the suction port of the compressor, or the suction temperature of the compressor, which refers to the temperature at the suction port of the compressor. When the working condition parameters meet the preset conditions, the compressor is controlled to stop running in time, so that a proper amount of refrigerant is stored in the indoor heat exchanger or the outdoor heat exchanger, and the problems that the energy consumption of the air conditioner is high due to long-term running of the compressor and the compressor is damaged due to long-term idling of the compressor can be avoided.
In one embodiment, the range of the first preset time and the second preset time is 10s to 120s, the range of the first preset pressure and the second preset pressure is 0MPa to 0.6MPa, and the range of the first preset temperature and the second preset temperature is-30 ℃ to 0 ℃, so that a proper amount of refrigerant can be stored in the indoor heat exchanger or the outdoor heat exchanger, and the problems of high energy consumption of the air conditioner and compressor damage caused by long-term idling of the compressor due to long-term operation of the compressor can be avoided.
In one embodiment, the throttle mechanism includes a throttle mechanism body and a second switch device connected in series, and the throttle mechanism is controlled to close, including: and controlling the second switching device to be closed, so that the throttling mechanism is closed, and the third pipeline is disconnected.
In one embodiment, the control method includes: and responding to a starting instruction, controlling the throttle mechanism and the first switching device to be started so as to conduct the third pipeline, and conducting the pipeline where the first switching device is located.
And responding to the starting instruction, and starting the air conditioner to operate. In order to ensure the normal circulation of the refrigerant, the throttle mechanism is controlled to be opened, so that the third pipeline is conducted, the first switching device is controlled to be opened, the first pipeline or the second pipeline where the first switching device is located is conducted, and the refrigerant flowing out of the exhaust port of the compressor realizes normal refrigeration circulation through the outdoor heat exchanger, the throttle mechanism and the indoor heat exchanger or realizes normal heating circulation through the indoor heat exchanger, the throttle mechanism and the outdoor heat exchanger. The refrigerant stored in the outdoor heat exchanger flows to the indoor heat exchanger or the refrigerant stored in the indoor heat exchanger flows to the outdoor heat exchanger, so that the starting-up refrigeration and heating speed is increased.
in one embodiment, the throttle mechanism includes a throttle mechanism body and a second switch device connected in series, and the control of the throttle mechanism and the first switch device includes: and controlling the second switch device to be opened so as to control the throttle mechanism to be opened.
an aspect of the third aspect of the present invention provides a control device, including a processor and a memory, where the processor is configured to implement the steps of the control method according to any one of the first aspect of the present invention when executing the computer program stored in the memory.
an aspect of the fourth aspect of the present invention provides an air conditioner including the control device according to the third aspect.
An aspect of the fifth aspect of the present invention provides a computer-readable storage medium having a computer program (instructions) stored thereon, characterized in that: the computer program (instructions), when executed by a processor, implement the steps of the control method according to any one of the claims of 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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
Fig. 1 is a schematic structural diagram of an air conditioner according to a first embodiment of the present invention;
Fig. 2 is a schematic structural diagram of an air conditioner according to a second embodiment of the present invention;
Fig. 3 is a schematic structural diagram of an air conditioner according to a third embodiment of the present invention;
Fig. 4 is a schematic structural diagram of an air conditioner according to a fourth embodiment of the present invention;
FIG. 5 is a flow chart illustrating a control method according to an embodiment of the present invention;
Fig. 6 is a schematic flow chart of a control method according to a fifth embodiment of the present invention;
fig. 7 is a flowchart illustrating a control method according to a sixth embodiment of the present invention;
FIG. 8 is a flowchart illustrating a control method according to a first embodiment of the present invention;
FIG. 9 is a flow chart illustrating a control method according to a second embodiment of the present invention;
Fig. 10 is a schematic block diagram of a control device according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 10 is:
The system comprises a compressor, an exhaust port 11, a suction port 12, a reversing component 2, an outdoor heat exchanger 3, an outdoor fan 4, a throttling mechanism 5, a throttling mechanism body 51, a second switching device 52, a first switching device 6, an indoor heat exchanger 7, an indoor fan 8, a first pipeline 9, a second pipeline 10, a third pipeline 20, a first sub-pipeline 201, a second sub-pipeline 202, a control device 200, a memory 204 and a processor 206.
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 and features of the embodiments of the present application 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 otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
An air conditioner, a control method thereof, a control apparatus thereof, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 10 of the accompanying drawings.
As shown in fig. 1, an air conditioner according to some embodiments of the present invention includes a compressor 1, a reversing assembly 2, an outdoor heat exchanger 3, an indoor heat exchanger 7, an outdoor fan 4, an indoor fan 8, a throttle mechanism 5, a first switching device 6, and a controller.
The compressor 1 has a discharge port 11 and a suction port 12.
the direction changing unit 2 has first to fourth ports, the first port being connected to the exhaust port 11, and the third port being connected to the suction port 12.
the first end and the second port of the outdoor heat exchanger 3 are connected through a first pipeline 9, the first end and the fourth port of the indoor heat exchanger 7 are connected through a second pipeline 10, the second end of the outdoor heat exchanger 3 and the second end of the indoor heat exchanger 7 are connected through a third pipeline 20, and the throttling mechanism 5 is arranged on the third pipeline 20 and used for controlling the on-off of the third pipeline 20.
the controller is respectively electrically connected with the throttling mechanism 5 and the first switching device 6, the throttling mechanism 5 receives a control signal sent by the controller and controls the on-off of the third pipeline 20 according to the control signal, and the first switching device 6 receives the control signal sent by the controller and controls the on-off of the pipeline where the first switching device is located according to the control signal.
the first embodiment is as follows:
As shown in fig. 1, the first switching device 6 is disposed on the first pipeline 9 and is used for controlling on/off of the first pipeline 9, and the compressor 1, the first switching device 6, the outdoor heat exchanger 3, the throttling mechanism 5, and the indoor heat exchanger 7 are sequentially connected to form a refrigerant circulation loop.
In the refrigeration cycle, the refrigerant discharged from the discharge port 11 of the compressor 1 flows back to the suction port 12 of the compressor 1 through the reversing assembly 2, the outdoor heat exchanger 3, the throttling mechanism 5 and the indoor heat exchanger 7. In the heating cycle, the refrigerant discharged from the discharge port 11 of the compressor 1 flows back to the suction port 12 of the compressor 1 through the direction changing unit 2, the indoor heat exchanger 7, the throttle mechanism 5, and the outdoor heat exchanger 3.
In the air conditioner provided by the above embodiment of the present invention, in response to the shutdown instruction, the throttling mechanism 5 is controlled to be closed, so that the third pipeline 20 is disconnected, the compressor 1 is maintained to continue to operate, and the first switching device 6 is turned on, so that the first pipeline 9 is turned on. Therefore, when the air conditioner is turned off in a refrigeration mode, the compressor 1 continues to operate, and the refrigerant discharged from the exhaust port 11 of the compressor 1 is stored in the outdoor heat exchanger 3, so that the amount of the refrigerant on the outdoor side is larger than that of the refrigerant on the indoor side and is consistent with the amount of the refrigerant on the outdoor side which is larger than that of the refrigerant on the indoor side when the air conditioner reaches a stable operation state, the refrigerant of the air conditioner reaches the state of stable operation as soon as possible, the high-low pressure difference for establishing system balance is accelerated, and the refrigeration speed of the air conditioner is increased when. When the air conditioner is turned off in the heating mode, the compressor 1 continues to operate, and the refrigerant discharged from the exhaust port 11 of the compressor 1 is stored in the indoor heat exchanger 7, so that the amount of the indoor side refrigerant is larger than that of the outdoor side refrigerant and is consistent with the amount of the indoor side refrigerant which is larger than that of the outdoor side refrigerant when the air conditioner reaches a stable operation state, the refrigerant of the air conditioner reaches the stable operation state as soon as possible, the high-low pressure difference for establishing system balance is accelerated, and the heating speed of the air conditioner is improved when the air conditioner is turned on next time.
Further, the first switching device 6 includes a first electromagnetic valve, which may be, but is not limited to, a first one-way electromagnetic shutoff valve or a first two-way electromagnetic shutoff valve.
The first bidirectional electromagnetic stop valve or the first one-way electromagnetic stop valve can realize the control of the on-off of the first pipeline 9 or the second pipeline 10, wherein the control of the first one-way electromagnetic stop valve is simpler and has lower cost.
It is understood that the first switching device 6 may be other shut valves having the same function in addition to the first one-way electromagnetic shut valve and the first two-way electromagnetic shut valve.
further, the throttle means 5 includes a shut-off throttle means 5 that can be shut off, such as an electronic expansion valve.
The cut-off throttling mechanism 5 has a cut-off function, so the cut-off throttling mechanism 5 can control the on-off of the third pipeline 20, and a switch device for controlling the third pipeline 20 is not needed to be arranged at the moment, so the structure of the air conditioner is further simplified, and the cost of the air conditioner is reduced.
The electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.
example two:
As shown in fig. 2, the difference from the first embodiment is that a first switch device 6 is disposed on the second pipeline 10 for controlling the on/off of the second pipeline 10.
in response to the shutdown instruction, the throttle mechanism 5 is controlled to be closed, so that the third pipeline 20 is disconnected, the compressor 1 is maintained to continue to operate, and the first switching device 6 is opened, so that the second pipeline 10 is conducted. Therefore, when the air conditioner is turned off in a refrigeration mode, the compressor 1 continues to operate, and the refrigerant discharged from the exhaust port 11 of the compressor 1 is stored in the outdoor heat exchanger 3, so that the amount of the refrigerant on the outdoor side is larger than that of the refrigerant on the indoor side and is consistent with the amount of the refrigerant on the outdoor side which is larger than that of the refrigerant on the indoor side when the air conditioner reaches a stable operation state, the refrigerant of the air conditioner reaches the state of stable operation as soon as possible, the high-low pressure difference for establishing system balance is accelerated, and the refrigeration speed of the air conditioner is increased when. When the air conditioner is turned off in the heating mode, the compressor 1 continues to operate, and the refrigerant discharged from the exhaust port 11 of the compressor 1 is stored in the indoor heat exchanger 7, so that the amount of the indoor side refrigerant is larger than that of the outdoor side refrigerant and is consistent with the amount of the indoor side refrigerant which is larger than that of the outdoor side refrigerant when the air conditioner reaches a stable operation state, the refrigerant of the air conditioner reaches the stable operation state as soon as possible, the high-low pressure difference for establishing system balance is accelerated, and the heating speed of the air conditioner is improved when the air conditioner is turned on next time.
Example three:
as shown in fig. 3, the difference from the first embodiment is that the throttling mechanism 5 includes a throttling mechanism body 51 and a second switching device 52 connected in series, the third pipeline 20 is divided into a first sub-pipeline 201 and a second sub-pipeline 202 by the throttling mechanism body, and the second switching device 52 is disposed on the first sub-pipeline 201 and electrically connected to the controller to control the on-off of the first sub-pipeline 201 according to the received control signal of the controller, or the second switching device 52 is disposed on the second sub-pipeline 202 and electrically connected to the controller to control the on-off of the second sub-pipeline 202 according to the received control signal of the controller. The first sub-pipeline 201 and the second sub-pipeline 202 where the second switch device 52 is located can be switched on and off by controlling the second switch device 52.
the throttle body 51 may have a cut-off function, and at this time, the throttle body 51 may also be used to control the on/off of the third pipeline 20, for example, the throttle body 51 is an electronic expansion valve, so if the pipeline where the throttle 5 is located needs to be controlled to be conducted, the second switch device 52 and the throttle body 51 need to be controlled to be opened at the same time; the throttle body may also have no shut-off function, for example, the throttle body is a capillary tube or a thermostatic expansion valve.
the on-off control of the third pipeline 20 is realized through the combination of the throttle mechanism body 51 and the second switch device 52, so that the refrigerant can be stored in the outdoor heat exchanger 3 or the indoor heat exchanger 7 when the air conditioner shutdown compressor 1 continues to operate, and the cooling or heating speed is increased when the air conditioner is started next time.
Further, the second switching device 52 includes a second one-way electromagnetic cut-off valve or a second two-way electromagnetic cut-off valve.
The on-off of the third pipeline 20 can be controlled by the second one-way electromagnetic cut-off valve or the second two-way electromagnetic cut-off valve, for example, if the second switch device 52 is located on the first sub-pipeline 201, the on-off of the first sub-pipeline 201 is controlled by the second switch device 52, and if the second switch device 52 is located on the second sub-pipeline 202, the on-off of the second sub-pipeline 202 is controlled by the second switch device 52.
Further, the throttle mechanism body 51 includes a capillary tube, an electronic expansion valve, or a thermal expansion valve.
the capillary tube and the thermostatic expansion valve have simple structures and low cost, and the electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.
Example four:
As shown in fig. 4, the difference from the third embodiment is that the first switching device 6 is provided on the second pipeline 10.
An aspect of a second aspect of the present invention provides a control method for controlling an air conditioner according to any one of the aspects of the first aspect, the control method including:
as shown in fig. 5, in step S50, in response to the shutdown instruction, the throttling mechanism 5 is controlled to be closed, the compressor 1 is controlled to continue to operate, the first switching device 6 is controlled to be opened, so that the third pipeline 20 is disconnected, and the pipeline where the first switching device 6 is located is connected; wherein, the second end of the outdoor heat exchanger 3 is connected with the second end of the indoor heat exchanger 7 through a third pipeline 20, and the throttling mechanism 5 is arranged on the third pipeline 20 and is used for controlling the on-off of the third pipeline 20.
In the control method provided by the technical scheme of the second aspect of the invention, in response to a shutdown instruction, the throttle mechanism 5 is controlled to be closed, so that the third pipeline 20 is disconnected, the compressor 1 is kept to continue to operate, and the first switching device 6 is opened, so that the pipeline where the first switching device 6 is located is conducted, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 is stored in the outdoor heat exchanger 3 or the indoor heat exchanger 7, and when the air conditioner is started next time, compared with the case that the refrigerant flows out from the exhaust port 11 of the compressor 1 to the indoor heat exchanger 7 or the outdoor heat exchanger 3, the refrigerant is stored in the outdoor heat exchanger 3 or the indoor heat exchanger 7 in advance, so that the refrigerant of the air conditioner reaches a stable operation state as soon as possible, the establishment of the high-low pressure difference of system balance is accelerated.
the shutdown instruction can be from a remote controller of the air conditioner, that is, a user sends the shutdown instruction to the air conditioner through the remote controller. The air conditioner can also automatically shut down in an automatic control mode according to the change of the indoor or outdoor temperature to generate a shutdown instruction, for example, when the indoor ambient temperature is lower than the preset temperature in the refrigeration mode, the air conditioner automatically shuts down, for example, when the indoor ambient temperature is detected to be lower than the preset temperature, the shutdown instruction is generated.
The starting instruction can be from a remote controller of the air conditioner, namely, a user sends the starting instruction to the air conditioner through the remote controller. The air conditioner can also be automatically controlled to automatically start according to the change of the indoor or outdoor temperature to generate a starting instruction, for example, when the indoor environment temperature is higher than the preset temperature in the refrigeration mode, the air conditioner automatically starts, for example, when the indoor environment temperature is higher than the preset temperature, the starting instruction is generated.
example five:
The fifth embodiment provides a control method for controlling the air conditioner according to the first and third embodiments, as shown in fig. 6, the control method includes:
Step S706, in response to the shutdown instruction, controls the throttle mechanism 5 to close, controls the compressor 1 to continue to operate, and controls the first switching device 6 to open, so as to disconnect the third pipeline 20 and connect the first pipeline 9.
For the throttle mechanism 5 including the throttle mechanism body 51 and the second switching device 52 connected in series, controlling the throttle mechanism 5 to close in step S704 includes: the second switching device 52 is controlled to close, so that the throttle means 5 is closed and the third line 20 is disconnected.
Further, after step S706, the method further includes:
Step 708, detecting working condition parameters of the air conditioner;
Step S710, judging whether the working condition parameters of the air conditioner meet preset conditions;
if the working condition parameters of the air conditioner meet the preset conditions, executing step S712, controlling the compressor 1 to stop running, and controlling the first switching device 6 to be turned off, so as to disconnect the pipeline where the first switching device 6 is located;
and if the working condition parameters of the air conditioner do not meet the preset conditions, returning to the step S706.
When the air conditioner is shut down in a refrigeration mode, a shutdown instruction is responded, the refrigerant discharged from the air outlet of the compressor enters the outdoor heat exchanger through the first pipeline, the refrigerant stays in the outdoor heat exchanger due to the disconnection of the third pipeline, the compressor continues to work, and the refrigerant in the indoor heat exchanger is sucked into the outdoor heat exchanger before the working condition parameters reach the preset conditions, so that the refrigerant is stored in the outdoor heat exchanger, and the refrigeration speed is accelerated when the air conditioner is started next time. When the working condition parameters reach the preset conditions, the compressor stops running, the first switching device is closed, the first pipeline is disconnected, the refrigerant is retained in the outdoor heat exchanger, and when the compressor is started next time, the refrigerant in the outdoor heat exchanger participates in refrigerant circulation.
when the air conditioner is shut down in the heating mode, in response to a shutdown instruction, the refrigerant discharged from the air outlet of the compressor enters the indoor heat exchanger through the second pipeline, the refrigerant stays in the indoor heat exchanger due to the disconnection of the third pipeline, the compressor continues to work, and the refrigerant in the outdoor heat exchanger is sucked into the indoor heat exchanger before the working condition parameters reach the preset conditions, so that the refrigerant is stored in the indoor heat exchanger, and the heating speed is accelerated when the air conditioner is started next time. And after the working condition parameters reach the preset conditions, the compressor stops running, the first switching device is closed, the second pipeline is disconnected, the refrigerant is retained in the indoor heat exchanger, and when the compressor is started next time, the refrigerant in the indoor heat exchanger participates in refrigerant circulation.
The working condition parameters of the air conditioner are detected, whether the working condition parameters meet preset conditions or not is judged, when the working condition parameters meet the preset conditions, the first switching device 6 is controlled to be turned off, the first pipeline 9 or the second pipeline 10 where the first switching device 6 is located is disconnected, the compressor 1 is controlled to stop running, the refrigerant is stored in the outdoor heat exchanger 3 when the air conditioner is turned off in the cooling mode, the refrigerant is stored in the indoor heat exchanger 7 when the air conditioner is turned off in the heating mode, the time for the refrigerant to run to a stable state when the air conditioner is turned on next time is shortened, and the cooling and heating speeds are increased.
In one embodiment, the working condition parameters of the air conditioner meet preset conditions, and specifically include: the air conditioner is shut down when running in a refrigeration mode (the air conditioner works in the refrigeration mode before being shut down), and any one of the continuous running time of the compressor 1 is longer than a first preset time, the suction pressure of the compressor 1 is lower than a first preset pressure, and the suction temperature of the compressor 1 is lower than a first preset temperature. The air conditioner is shut down when operating in the heating mode (the air conditioner works in the heating mode before being shut down), and any one of the continuous operation time of the compressor 1 is longer than a second preset time, the suction pressure of the compressor 1 is lower than the second preset pressure, and the suction temperature of the compressor 1 is lower than the second preset temperature.
When the working condition parameters meet the preset conditions, the compressor 1 is controlled to stop running in time, so that a proper amount of refrigerant is stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3, and the problems that the energy consumption of the air conditioner is high due to long-term running of the compressor 1 and the compressor is damaged due to long-term idling of the compressor can be avoided. The operating parameters comprise the length of time the compressor 1 continues to operate, the suction pressure of the compressor 1, which means the pressure at the suction 12 of the compressor 1, or the suction temperature of the compressor 1, which means the temperature at the suction 12 of the compressor 1.
In one embodiment, the first preset time period and the second preset time period range from 10s to 120s, and the first preset time period or the second preset time period may be, but is not limited to, 10s, 40s, 80s, or 120 s.
The range of the first preset time and the second preset time is controlled to be 10 s-120 s, the situation that the refrigerant stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3 is insufficient due to the fact that the first preset time and the second preset time are shorter than 10s is avoided, and the situation that the refrigerant quantity discharged by the compressor 1 is larger than the capacity of the liquid accumulator indoor heat exchanger 7 or the outdoor heat exchanger 3 due to the fact that the first preset time and the second preset time are longer than 120s can also be avoided, and the situation that the energy consumption of the compressor 1 is higher and the compressor is damaged due to the fact that the compressor idles for a long time is caused.
The first preset duration and the second preset duration may be equal to or unequal to each other.
The first preset pressure and the second preset pressure are in the range of 0 MPa-0.6 MPa (absolute pressure), and the first preset pressure and the second preset pressure are equal or unequal. The first and second preset pressures may be, but are not limited to, 0MPa, 0.3MPa, or 0.6 MPa.
the range of the first preset pressure and the second preset pressure is 0 MPa-0.6 MPa, which not only can ensure that a proper amount of refrigerant is stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3, but also can avoid the high energy consumption of the air conditioner caused by the long-term operation of the compressor 1 and the damage of the compressor caused by the long-term idle running of the compressor.
The first preset temperature and the second preset temperature range from-30 ℃ to 0 ℃, and the first preset temperature and the second preset temperature can be equal or unequal. The first preset temperature may be, but is not limited to, -30 ℃, -20 ℃, 10 ℃ or 0 ℃.
Further, the control method comprises the following steps: step S702, in response to the power-on command, controls the throttle mechanism 5 and the first switch device 6 to be turned on, and controls the compressor 1 to be turned on, so as to conduct the third pipeline 20 and the pipeline where the first switch device is located. When the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, the throttle mechanism 5 is controlled to be opened, including controlling the second switching device 52 to be opened, so as to conduct the third pipeline 20 between the indoor heat exchanger 7 and the outdoor heat exchanger 3.
Step S702 may precede or follow step S706.
when step S702 precedes step S706, the control method further includes:
step S704, judging whether a shutdown instruction is received, wherein the shutdown instruction can be from an air conditioner remote controller;
If a shutdown command is received, step S706 is executed, and if no shutdown command is received, step S702 is returned to.
After shutdown, the next time the computer is started, step S702 is executed.
And responding to the starting instruction of the refrigeration mode, starting the air conditioner to operate, operating in the refrigeration mode, responding to the starting instruction of the heating mode, starting the air conditioner to operate, and operating in the heating mode. In order to ensure the normal circulation of the refrigerant, the throttle mechanism 5 is controlled to be opened, so that the third pipeline 20 is conducted, the first switching device 6 is controlled to be opened, the first pipeline 9 is conducted, and the refrigerant flowing out of the exhaust port 11 of the compressor 1 realizes the normal refrigeration circulation through the outdoor heat exchanger 3, the throttle mechanism 5 and the indoor heat exchanger 7 or realizes the normal heating circulation through the indoor heat exchanger 7, the throttle mechanism 5 and the outdoor heat exchanger 3. The refrigerant accumulated in the outdoor heat exchanger 3 flows to the indoor heat exchanger 7 or the refrigerant accumulated in the indoor heat exchanger 7 flows to the outdoor heat exchanger 3, thereby accelerating the starting-up cooling and heating speed.
Example six:
the sixth embodiment provides a control method for controlling the air conditioners described in the second and fourth embodiments.
As shown in fig. 7, the control method includes:
Step S906, in response to the shutdown instruction, controls the throttle mechanism 5 to close, controls the compressor 1 to continue to operate, and controls the first switching device 6 to open, so as to disconnect the third pipeline 20 and connect the second pipeline 10.
For the throttle mechanism 5 including the throttle mechanism body 51 and the second switching device 52 connected in series, controlling the throttle mechanism 5 to close in step S904 includes: the second switching device 52 is controlled to close, so that the throttle means 5 is closed and the third line 20 is disconnected.
further, after step S906, the method further includes:
Step S908, detecting working condition parameters of the air conditioner;
Step S910, judging whether the working condition parameters of the air conditioner meet preset conditions;
If the working condition parameters of the air conditioner meet the preset conditions, executing step S912, controlling the compressor 1 to stop running, and controlling the first switching device 6 to be closed, so as to disconnect the pipeline where the first switching device 6 is located;
And if the working condition parameters of the air conditioner do not meet the preset conditions, returning to the step S906.
When the air conditioner is shut down in a refrigeration mode, a shutdown instruction is responded, the refrigerant discharged from the air outlet of the compressor enters the outdoor heat exchanger through the first pipeline, the refrigerant stays in the outdoor heat exchanger due to the disconnection of the third pipeline, the compressor continues to work, and the refrigerant in the indoor heat exchanger is sucked into the outdoor heat exchanger before the working condition parameters reach the preset conditions, so that the refrigerant is stored in the outdoor heat exchanger, and the refrigeration speed is accelerated when the air conditioner is started next time. When the working condition parameters reach the preset conditions, the compressor stops running, the first switching device is closed, the first pipeline is disconnected, the refrigerant is stored in the outdoor heat exchanger, and when the compressor is started next time, the refrigerant in the outdoor heat exchanger participates in refrigerant circulation.
When the air conditioner is shut down in the heating mode, in response to a shutdown instruction, the refrigerant discharged from the air outlet of the compressor enters the indoor heat exchanger through the second pipeline, the refrigerant stays in the indoor heat exchanger due to the disconnection of the third pipeline, the compressor continues to work, and the refrigerant in the outdoor heat exchanger is sucked into the indoor heat exchanger before the working condition parameters reach the preset conditions, so that the refrigerant is stored in the indoor heat exchanger, and the heating speed is accelerated when the air conditioner is started next time. And after the working condition parameters reach the preset conditions, the compressor stops running, the first switching device is closed, the second pipeline is disconnected, the refrigerant is retained in the indoor heat exchanger, and when the compressor is started next time, the refrigerant in the indoor heat exchanger participates in refrigerant circulation.
the working condition parameters of the air conditioner are detected, whether the working condition parameters meet preset conditions or not is judged, when the working condition parameters meet the preset conditions, the first switching device 6 is controlled to be closed, the second pipeline 10 where the first switching device 6 is located is disconnected, the compressor 1 is controlled to stop running, the refrigerant is stored in the outdoor heat exchanger 3 when the refrigeration mode is shut down, the refrigerant is stored in the indoor heat exchanger 7 when the refrigeration mode is shut down, the time for the refrigerant to run to a stable state when the next operation is accelerated, and the refrigeration and heating speeds are increased.
In one embodiment, the working condition parameters of the air conditioner meet preset conditions, and specifically include: the air conditioner is shut down when running in a refrigeration mode (the air conditioner works in the refrigeration mode before being shut down), any one of the continuous running time of the compressor 1 is longer than a first preset time, the suction pressure of the compressor 1 is lower than a first preset pressure and the suction temperature of the compressor 1 is lower than a first preset temperature; the air conditioner is shut down when operating in the heating mode (the air conditioner works in the heating mode before being shut down), and any one of the continuous operation time of the compressor 1 is longer than a second preset time, the suction pressure of the compressor 1 is lower than the second preset pressure, and the suction temperature of the compressor 1 is lower than the second preset temperature.
The operating parameters comprise the length of time the compressor 1 continues to operate, the suction pressure of the compressor 1, which means the pressure at the suction 12 of the compressor 1, or the suction temperature of the compressor 1, which means the temperature at the suction 12 of the compressor 1. When the working condition parameters meet the preset conditions, the compressor 1 is controlled to stop running in time, so that a proper amount of refrigerant is stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3, and the problems that the energy consumption of the air conditioner is high due to long-term running of the compressor 1 and the compressor is damaged due to long-term idling of the compressor can be avoided.
In one embodiment, the first preset time period and the second preset time period range from 10s to 120s, and the first preset time period or the second preset time period may be, but is not limited to, 10s, 40s, 80s, or 120 s.
The range of the first preset time and the second preset time is controlled to be 10 s-120 s, the situation that the refrigerant stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3 is insufficient due to the fact that the first preset time and the second preset time are shorter than 10s is avoided, and the situation that the refrigerant quantity discharged by the compressor 1 is larger than the capacity of the liquid accumulator indoor heat exchanger 7 or the outdoor heat exchanger 3 due to the fact that the first preset time and the second preset time are longer than 120s can also be avoided, and the situation that the energy consumption of the compressor 1 is higher and the compressor is damaged due to the fact that the compressor idles for a long time is caused.
the first preset duration and the second preset duration may be equal to or unequal to each other.
the first preset pressure and the second preset pressure are in the range of 0 MPa-0.6 MPa (absolute pressure), and the first preset pressure and the second preset pressure are equal or unequal. The first and second preset pressures may be, but are not limited to, 0MPa, 0.3MPa, or 0.6 MPa.
The range of the first preset pressure and the second preset pressure is 0 MPa-0.6 MPa, which not only can ensure that a proper amount of refrigerant is stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3, but also can avoid the high energy consumption of the air conditioner caused by the long-term operation of the compressor 1 and the damage of the compressor caused by the long-term idle running of the compressor.
The range of the first preset temperature and the second preset temperature is-30-0 ℃, the compressor is controlled to stop running in time, the damage to the compressor caused by overhigh energy consumption of the compressor and long-term idle running of the compressor is avoided, and the indoor heat exchanger 7 or the outdoor heat exchanger 3 can be ensured to store a proper amount of refrigerant. The first preset temperature and the second preset temperature may be equal or unequal. The first preset temperature may be, but is not limited to, -30 ℃, -20 ℃, -10 ℃ or 0 ℃.
further, the control method comprises the following steps: in step S902, in response to the power-on command, the throttling mechanism 5 and the first switching device 6 are controlled to be turned on, so that the third pipeline 20 is conducted, and the pipeline where the first switching device is located is conducted. When the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, the throttle mechanism 5 is controlled to be opened, including controlling the second switching device 52 to be opened, so as to conduct the third pipeline 20 between the indoor heat exchanger 7 and the outdoor heat exchanger 3.
Step S902 may be before or after step S906.
When step S902 precedes step S906, the control method further includes:
Step S904, judging whether a shutdown instruction is received, wherein the shutdown instruction can be from an air conditioner remote controller;
if a shutdown command is received, step S906 is executed, and if no shutdown command is received, the process returns to step S902.
After shutdown, the next time the computer is started, step S902 is executed.
And responding to the starting instruction of the refrigeration mode, starting the air conditioner to operate, operating in the refrigeration mode, responding to the starting instruction of the heating mode, starting the air conditioner to operate, and operating in the heating mode. In order to ensure the normal circulation of the refrigerant, the throttle mechanism 5 is controlled to be opened, so that the third pipeline 20 is conducted, the first switching device 6 is controlled to be opened, the second pipeline 10 is conducted, and the refrigerant flowing out of the exhaust port 11 of the compressor 1 realizes the normal refrigeration circulation through the outdoor heat exchanger 3, the throttle mechanism 5 and the indoor heat exchanger 7 or realizes the normal heating circulation through the indoor heat exchanger 7, the throttle mechanism 5 and the outdoor heat exchanger 3. The refrigerant accumulated in the outdoor heat exchanger 3 flows to the indoor heat exchanger 7 or the refrigerant accumulated in the indoor heat exchanger 7 flows to the outdoor heat exchanger 3, thereby accelerating the starting-up cooling and heating speed.
In a first specific embodiment, corresponding to the air conditioner shown in fig. 1 and 2, as shown in fig. 8, the control method includes steps S1102 to S1112, in which the check valve is the first switching device 6.
in a second specific embodiment, corresponding to the air conditioner shown in fig. 3 and 4, as shown in fig. 9, the control method includes steps S1302 to S1312, where the second switching device 52 is a first solenoid valve (the first solenoid valve may be a one-way electromagnetic cut-off valve or a two-way electromagnetic cut-off valve), and the first switching device 6 is a second solenoid valve (the second solenoid valve may be a one-way electromagnetic cut-off valve or a two-way electromagnetic cut-off valve).
When the air conditioner reaches a stable operation state, the refrigerant quantity on the high-pressure side is relatively large, and the refrigerant quantity on the low-pressure side is relatively small, so that the refrigerant is transferred to the outdoor side (the outdoor heat exchanger 3) when the air conditioner is shut down in the refrigeration mode, and the refrigerant is transferred to the indoor side (the indoor heat exchanger 7) when the air conditioner is shut down in the heating mode. Therefore, when the cooling mode is turned off, the first switching device 6 is disposed at the inlet of the outdoor heat exchanger 3 (on the first pipeline 9) in fig. 1 and 3, and the compressor 1 transfers at least a portion of the refrigerant inside the room to the outside of the room when turned off. In the heating mode, when the compressor is turned off, the first switching device 6 is disposed at the inlet of the indoor heat exchanger 7 (on the second pipeline 10) in fig. 2 and 4, and the compressor 1 preferably transfers at least a portion of the refrigerant outside the room to the indoor side when the compressor is turned off.
to sum up, the air conditioner provided by the embodiment of the present invention can effectively prevent the refrigerant migration during the shutdown process by adding the first switching device 6 in the system, so that the refrigerant distribution in the shutdown state is closer to the refrigerant distribution during the stable operation, and the system stabilization time after the startup is reduced, thereby realizing the rapid cooling and heating, and the specific scheme is as follows:
and (3) closing the throttling mechanism 5 while shutting down, continuously keeping the compressor 1 running, judging the running time through time, suction pressure or suction temperature, and if the running time of the compressor 1 exceeds preset time or the suction pressure is lower than the preset pressure or the suction temperature is lower than the preset temperature, shutting down and closing the first switching device 6 at the indoor heat exchanger 7 or the outdoor heat exchanger 3.
as shown in fig. 10, a third aspect of the present invention provides a control device 200, which includes a processor 206 and a memory 204, wherein the processor 206 is configured to implement the steps of the control method according to any one of the first aspect of the present invention when executing the computer program stored in the memory 204.
An aspect of the fourth aspect of the present invention provides an air conditioner including the control device 200 according to the third aspect.
an embodiment of a fifth aspect of the present invention provides a computer-readable storage medium having a computer program (instructions) stored thereon, characterized in that: the computer program (instructions), when executed by the processor 206, implement the steps of the control method as in any one of the embodiments of the second aspect.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage mediums comprising computer-usable program code(s) (including, but not limited to, disk storage 204, CD-ROM, optical storage 204, etc.).
the present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor 206 of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor 206 of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory 204 that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory 204 produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
In the description of the present invention, the term "plurality" means two or more unless explicitly specified or limited otherwise; the terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; 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.
it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims and their equivalents, and it is intended that the invention encompass such changes and modifications as well.

Claims (17)

1. an air conditioner, comprising:
A compressor having an exhaust port and an intake port;
The reversing component is provided with a first port, a second port, a third port and a fourth port, wherein the first port is connected with the exhaust port, and the third port is connected with the air suction port;
The first end of the outdoor heat exchanger is connected with the second port through a first pipeline, and the first end of the indoor heat exchanger is connected with the fourth port through a second pipeline;
The second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through a third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline;
the first switching device is arranged on the first pipeline and used for controlling the on-off of the first pipeline, or is arranged on the second pipeline and used for controlling the on-off of the second pipeline;
A controller electrically connected to the throttling mechanism and the first switching device, respectively, the controller configured to: and responding to a shutdown instruction, controlling the throttle mechanism to be closed, controlling the compressor to continue to operate, and controlling the first switching device to be opened so as to disconnect the third pipeline and connect the pipeline where the first switching device is located.
2. The air conditioner according to claim 1,
The first switch device comprises a first one-way electromagnetic stop valve or a first two-way electromagnetic stop valve.
3. The air conditioner according to claim 1 or 2,
The throttling mechanism comprises a cut-off throttling mechanism which can be cut off.
4. The air conditioner according to claim 3,
The stop throttling mechanism comprises an electronic expansion valve.
5. The air conditioner according to claim 1 or 2,
the throttling mechanism comprises a throttling mechanism body and a second switching device which are connected in series, the third pipeline is divided into a first sub-pipeline and a second sub-pipeline by the throttling mechanism body, the second switching device is arranged on the first sub-pipeline, the second switching device is electrically connected with the controller so as to enable the first sub-pipeline to be connected or disconnected by receiving a control signal sent by the controller, or the second switching device is arranged on the second sub-pipeline, and the second switching device is electrically connected with the controller so as to enable the second sub-pipeline to be connected or disconnected by receiving the control signal sent by the controller.
6. the air conditioner according to claim 5,
The second switch device comprises a second one-way electromagnetic stop valve or a second two-way electromagnetic stop valve.
7. The air conditioner according to claim 5,
the throttle mechanism body comprises a capillary tube, an electronic expansion valve or a thermal expansion valve.
8. a control method for controlling the air conditioner according to any one of claims 1 to 7, characterized by comprising:
Responding to a shutdown instruction, controlling the throttle mechanism to be closed, controlling the compressor to continue to operate, and controlling the first switching device to be opened so as to disconnect the third pipeline, wherein the pipeline where the first switching device is located is conducted;
The second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through the third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline.
9. the control method according to claim 8, wherein the controlling the throttle mechanism to close and the compressor to continue operating in response to the shutdown command and after controlling the first switching device to open, further comprises:
and after the working condition parameters of the air conditioner meet preset conditions, controlling the compressor to stop running, and controlling the first switching device to be closed so as to disconnect the pipeline where the first switching device is located.
10. The control method according to claim 9,
The working condition parameters of the air conditioner meet preset conditions, and the method specifically comprises the following steps: the air conditioner is shut down when running in a refrigeration mode, and any one of the continuous running time of the compressor is longer than a first preset time, the suction pressure of the compressor is lower than a first preset pressure, and the suction temperature of the compressor is lower than a first preset temperature;
The air conditioner is shut down when running in a heating mode, and any one of the continuous running time of the compressor is longer than a second preset time, the suction pressure of the compressor is lower than a second preset pressure, and the suction temperature of the compressor is lower than a second preset temperature;
The first preset time is equal to or different from the second preset time, the first preset pressure is equal to or different from the second preset pressure, and the first preset temperature is equal to or different from the second preset temperature.
11. The control method according to claim 10,
The range of the first preset time and the second preset time is 10-120 s, the range of the first preset pressure and the second preset pressure is 0-0.6 MPa, and the range of the first preset temperature and the second preset temperature is-30-0 ℃.
12. the control method according to claim 8,
Throttle mechanism includes throttle mechanism body and the second switching device who establishes ties mutually, control throttle mechanism closes, includes: and controlling the second switch device to be closed.
13. The control method according to any one of claims 8 to 12, characterized by comprising:
And responding to a starting instruction, controlling the throttle mechanism and the first switching device to be started so as to conduct the third pipeline, and conducting the pipeline where the first switching device is located.
14. The control method according to claim 13,
The throttle mechanism includes throttle mechanism body and the second switching device who establishes ties mutually, control throttle mechanism reaches first switching device opens, includes: and controlling the second switch device to be started.
15. A control apparatus, comprising a processor and a memory, the processor being configured to implement the steps of the control method according to any one of claims 8 to 14 when executing a computer program stored in the memory.
16. An air conditioner characterized by comprising the control device according to claim 15.
17. A computer-readable storage medium having stored thereon a computer program (instructions), characterized in that: the computer program (instructions), when executed by a processor, implement the steps of the control method of any one of claims 8 to 14.
CN201910866035.6A 2019-09-12 2019-09-12 Air conditioner, control method and device thereof, and computer-readable storage medium Active CN110542227B (en)

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CN117387267B (en) * 2023-12-11 2024-03-29 珠海凌达压缩机有限公司 Control method and device of heat pump unit, heat pump unit and storage medium

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