CN110848850B - Air conditioner, control method of air conditioner, and storage medium - Google Patents

Air conditioner, control method of air conditioner, and storage medium Download PDF

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Publication number
CN110848850B
CN110848850B CN201911193083.XA CN201911193083A CN110848850B CN 110848850 B CN110848850 B CN 110848850B CN 201911193083 A CN201911193083 A CN 201911193083A CN 110848850 B CN110848850 B CN 110848850B
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China
Prior art keywords
heat exchanger
compressor
air conditioner
way valve
communicated
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Active
Application number
CN201911193083.XA
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Chinese (zh)
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CN110848850A (en
Inventor
卜其辉
许永锋
梁伯启
董世龙
王茹翰
苏本展
张宇
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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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Priority to CN201911193083.XA priority Critical patent/CN110848850B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an air conditioner, a control method of the air conditioner and a storage medium, wherein the air conditioner comprises the following components: a first heat exchanger; a compressor; the first end of the second heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the second heat exchanger is communicated with the return air port of the compressor; the first four-way valve is respectively communicated with an exhaust port of the compressor, the second end of the first heat exchanger and a return air port of the compressor; the second four-way valve is respectively communicated with the exhaust port of the compressor, the return air port of the compressor and the second end of the second heat exchanger; the first end of the third heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the third heat exchanger is communicated with the return air port of the compressor; and the photovoltaic power generation device is arranged corresponding to the third heat exchanger. The air conditioner provided by the invention realizes the heat dissipation of the photovoltaic power generation device and the defrosting under the heating condition of the second heat exchanger.

Description

Air conditioner, control method of air conditioner, and storage medium
Technical Field
The invention relates to the technical field of household appliances, in particular to an air conditioner, a control method of the air conditioner and a computer readable storage medium.
Background
At present, the utilization rate of photovoltaic power generation to solar energy cannot reach 100%, wherein a great part of solar energy is converted into heat energy, the part of heat can make a solar cell panel generate heat, if the part of heat is not taken away in time, the solar cell panel can generate temperature rise, and the photoelectric conversion efficiency of the solar cell panel can be reduced along with the rise of temperature.
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 provides an air conditioner.
The second aspect of the invention also provides a control method of the air conditioner.
A third aspect of the invention also provides a computer-readable storage medium.
In view of the above, a first aspect of the present invention provides an air conditioner, including: a first heat exchanger; a compressor including a return air port and an exhaust port; the first end of the second heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the second heat exchanger is communicated with the return air port of the compressor; the first four-way valve is respectively communicated with an exhaust port of the compressor, the second end of the first heat exchanger and a return air port of the compressor; the second four-way valve is respectively communicated with the exhaust port of the compressor, the return air port of the compressor and the second end of the second heat exchanger; the first end of the third heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the third heat exchanger is communicated with the return air port of the compressor; and the photovoltaic power generation device is arranged corresponding to the third heat exchanger.
The air conditioner provided by the invention comprises a heat exchange flow path consisting of a compressor, a first heat exchanger, a second heat exchanger, a first four-way valve and a second four-way valve, wherein the first four-way valve and the second four-way valve are used for switching the flow direction of a refrigerant in the heat exchange flow path so as to realize the refrigeration and heating of the air conditioner, the first end of the second heat exchanger is communicated with the first end of the first heat exchanger, at least three interfaces of the first four-way valve are respectively communicated with an exhaust port of the compressor, the second end of the first heat exchanger and a return air port of the compressor, at least three interfaces of the second four-way valve are respectively communicated with the exhaust port of the compressor, the return air port of the compressor and the second end of the second heat exchanger, namely the second end of the second heat exchanger is provided with two branches, so that the second end of the second heat exchanger is respectively communicated with the return air port of the compressor and the second four-way valve, the second heat exchanger can realize refrigeration, when the second end of the second heat exchanger is communicated with the second four-way valve, the heating of the second heat exchanger can be realized, the first end of the third heat exchanger is communicated with the first end of the first heat exchanger and the first end of the second heat exchanger, and the second end of the third heat exchanger is communicated with the air return port of the compressor, so that the third heat exchanger can be used as an evaporator no matter the air conditioner is in a refrigeration mode or a heating mode, the photovoltaic power generation device is arranged corresponding to the third heat exchanger, the heat dissipation effect of the photovoltaic power generation device is improved, the photoelectric conversion efficiency of the photovoltaic power generation device is improved, the electric quantity generated by the photovoltaic power generation device is further improved, meanwhile, the photovoltaic power generation device can dissipate heat in the process of absorbing solar energy, further, the heat dissipated by the photovoltaic power generation device can be more than the heat in the air, and the photovoltaic power generation device can also provide a heat source with a temperature higher than the air for the air conditioner, accordingly, the efficiency of the air conditioner is improved. Further, when the exhaust port of the compressor is communicated with the second end of the second heat exchanger through the second four-way valve, at least one second heat exchanger heats, when the first heat exchanger frosts, and when defrosting is needed, the communication direction of the second four-way valve can be kept unchanged, and the communication direction of the first four-way valve is switched, so that the exhaust port of the compressor is also communicated with the second end of the first heat exchanger through the first four-way valve, and therefore, high-temperature and high-pressure refrigerant flows to the first heat exchanger and the second heat exchanger through the exhaust port of the compressor respectively, and the technical effect of defrosting the first heat exchanger under the condition that the second heat exchanger heats is achieved.
According to the air conditioner provided by the invention, the air conditioner can also have the following additional technical characteristics:
in the above technical solution, further, the air conditioner further includes: the first electromagnetic valve is arranged between the second end of the second heat exchanger and the return air port of the compressor; and the second electromagnetic valve is arranged between the second end of the second heat exchanger and the second four-way valve.
In the technical scheme, the second end of the second heat exchanger is provided with two branches which are respectively communicated with the return port of the compressor and the second four-way valve, wherein the first electromagnetic valve is arranged between the second end of the second heat exchanger and the return port of the compressor to control the on-off of the pipeline between the return port of the compressor and the second heat exchanger, and the second electromagnetic valve is arranged between the second end of the second heat exchanger and the second four-way valve to control the on-off of the pipeline between the second heat exchanger and the second four-way valve, so that the heating or the refrigerating of the second heat exchanger is realized.
In any of the above technical solutions, further, the air conditioner further includes: the first throttling element is arranged on a pipeline connected with the first end of the first heat exchanger; the second throttling element is arranged on a pipeline connected with the first end of the second heat exchanger; and a third throttling element disposed on the pipe to which the first end of the third heat exchanger is connected.
In this technical solution, the air conditioner further includes a first throttling element, a second throttling element, and a third throttling element, and is configured to throttle the refrigerant in the pipe to reduce the pressure of the refrigerant, specifically, the first throttling element is disposed on the pipe to which the first end of the first heat exchanger is connected and is configured to throttle the refrigerant flowing to the first heat exchanger to reduce the pressure, the second throttling element is disposed on the pipe to which the first end of the second heat exchanger is connected and is configured to throttle the refrigerant flowing to the second heat exchanger to reduce the pressure, and the third throttling element is disposed on the pipe to which the first end of the third heat exchanger is connected and is configured to throttle the refrigerant flowing to the third heat exchanger to reduce the pressure.
Further, the first throttling element and/or the second throttling element and/or the third throttling element is an electronic expansion valve or a capillary tube.
In any of the above technical solutions, further, the air conditioner further includes: the first stop valve is arranged on a pipeline connected with the first end of the first heat exchanger; the second stop valve is arranged on a pipeline connected with a return air port of the compressor; and the third stop valve is arranged on a pipeline which is communicated with the second end of the second heat exchanger through the second four-way valve.
In this technical scheme, the air conditioner still includes first stop valve, second stop valve and third stop valve, when injecting the refrigerant in the air conditioner, the accessible stop valve is with the pipeline shutoff, and then avoids refrigerant flow or leak, and of course, also can be with the pipeline shutoff through the stop valve to change the flow direction of refrigerant.
In any of the above technical solutions, further, the number of the second heat exchangers is at least two, and the number of the third heat exchangers is at least two.
In the technical scheme, the number of the second heat exchangers is at least two, so that the air conditioner can refrigerate or heat a plurality of spaces, the number of the third heat exchangers is at least two, correspondingly, the number of the photovoltaic power generation devices is at least two, and therefore at least two photovoltaic power generation devices can dissipate heat through the air conditioner.
In any of the above technical solutions, further, the method further includes: the gas-liquid separator comprises a first port and a second port, the first port is communicated with the air return port of the compressor, and the second port is respectively communicated with the first four-way valve, the second end of the second heat exchanger and the second end of the third heat exchanger; the fan is arranged corresponding to the first heat exchanger; the first heat exchanger, the second heat exchanger, the third heat exchanger, the compressor, the first four-way valve, the second four-way valve and the gas-liquid separator are communicated through pipelines.
In the technical scheme, the air conditioner also comprises a gas-liquid separator and a fan, wherein a first port of the gas-liquid separator is communicated with a return air port of the compressor, a second port of the gas-liquid separator is communicated with a first four-way valve, a second end of a second heat exchanger and a second end of a third heat exchanger, namely the first four-way valve, the second heat exchanger and the third heat exchanger are communicated with the return air port of the compressor through the gas-liquid separator, so that a refrigerant which completes heat exchange in a heat exchange flow path flows to the gas-liquid separator to perform gas-liquid separation and then returns to the return air port of the compressor, and the compression efficiency of the compressor and the refrigeration or heating efficiency of the air conditioner are improved; the fan corresponds first heat exchanger setting, and the accessible fan improves the heat exchange efficiency of first heat exchanger.
In any one of the above technical solutions, further, the photovoltaic power generation apparatus includes a third heat exchanger, and the photovoltaic power generation apparatus further includes: a housing; the solar cell panel is arranged corresponding to the third heat exchanger, and the third heat exchanger and the solar cell panel are arranged on the shell; and the heat preservation layer is arranged in the shell, and the third heat exchanger is positioned between the heat preservation layer and the solar cell panel.
In this technical scheme, photovoltaic power generation device includes the third heat exchanger, solar cell panel, casing and heat preservation, also the third heat exchanger is a part of photovoltaic power generation device, solar cell panel, the casing, heat preservation and third heat exchanger have wholly constituted photovoltaic power generation device, and then optional installation photovoltaic power generation device, accessible three-way valve when also needing photovoltaic power generation device is connected to the both ends of third heat exchanger respectively on the pipeline that the first end of first heat exchanger is connected with the return air inlet of compressor on, when need not install photovoltaic power generation device, can dismantle photovoltaic power generation device, make the user can freely select whether to install photovoltaic power generation device. Furthermore, the solar cell panel and the third heat exchanger are arranged in the shell, the third heat exchanger is located between the solar cell panel and the heat preservation layer and used for dissipating heat of the solar cell panel, the heat preservation layer plays a role in heat preservation, and therefore the heat dissipation effect of the solar cell panel is improved.
In any of the above technical solutions, further, the photovoltaic power generation apparatus further includes: and the electric power storage structure is connected with the solar cell panel.
In the technical scheme, the photovoltaic power generation device further comprises an electricity storage structure, and the electricity storage structure can provide a household power supply or direct grid-connected power generation.
In any of the above aspects, further, the electric storage structure is connected to the compressor.
In the technical scheme, the electric power storage structure is connected with the compressor, so that the electric power storage structure can supply power to the air conditioner, the air conditioner does not need other power supplies or only needs other power supplies to provide a small amount of electric power, and the air conditioner is energy-saving and environment-friendly.
In any of the above technical solutions, further, the third heat exchanger is a microchannel heat exchanger.
In the technical scheme, compared with a conventional heat exchanger, the micro-channel heat exchanger is small in size, large in heat exchange coefficient and high in heat exchange efficiency, and can meet the higher energy efficiency standard. The micro-channel heat exchange technology is applied to cooling of the solar cell panel, and the refrigerating requirement of the solar cell panel can be well met.
According to a second aspect of the present invention, there is also provided a control method of an air conditioner, for the air conditioner as set forth in any one of the first aspects, the control method comprising: acquiring operation parameters of the air conditioner based on the condition of heating of at least one second heat exchanger; and on the basis of the condition that the running parameters meet the defrosting condition, keeping the communication direction of the second four-way valve unchanged, and switching the communication direction of the first four-way valve so as to enable the exhaust port of the compressor to be respectively communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger.
In the technical scheme, under the condition that at least one second heat exchanger heats, the operation parameters of the air conditioner are obtained, when the operation parameters of the air conditioner indicate that the first heat exchanger frosts, and defrosting is needed, the communication direction of the second four-way valve is kept unchanged, namely the operation mode in front of the second heat exchanger is kept unchanged, the communication direction of the first four-way valve is changed, so that the exhaust port of the compressor is respectively communicated with the second end of the first heat exchanger and the second end of at least one second heat exchanger, and defrosting is carried out on the first heat exchanger on the basis of heating of at least one second heat exchanger.
In any of the above technical solutions, further, before the step of obtaining the operation parameters of the air conditioner based on the condition of heating by the at least one second heat exchanger, the method further includes: and switching the communication direction of the first four-way valve and the second four-way valve, and opening a second electromagnetic valve corresponding to the at least one second heat exchanger so as to enable the exhaust port of the compressor to be communicated with the second end of the at least one second heat exchanger.
In the technical scheme, under the condition that at least one second heat exchanger is used for heating, the first heat exchanger can be used as an evaporator to frost, namely the first heat exchanger needs to be defrosted under the condition, wherein the number of the second heat exchangers can be multiple, then at least one second heat exchanger can be used for heating, at the moment, the communication directions of the first four-way valve and the second four-way valve are switched, and the second electromagnetic valve corresponding to at least one second heat exchanger is opened, so that the exhaust port of the compressor is communicated with the second end of at least one second heat exchanger, and the at least one second heat exchanger is used for heating. Specifically, all the second heat exchangers are heated, that is, the air conditioner is in a heating mode.
In any of the above technical solutions, further, the number of the second heat exchangers is at least two, and before the step of obtaining the operation parameters of the air conditioner based on the condition of heating by at least one second heat exchanger, the method further includes: switching the communication direction of the first four-way valve and the second four-way valve, and opening a second electromagnetic valve corresponding to at least one second heat exchanger and opening a first electromagnetic valve corresponding to at least one second heat exchanger; so that the second end of the second heat exchanger for opening the second electromagnetic valve is communicated with the exhaust port of the compressor, and the first end of the second heat exchanger for opening the second electromagnetic valve is respectively communicated with the first end of the first heat exchanger, the first end of the third heat exchanger and the first end of the second heat exchanger for opening the first electromagnetic valve.
In the technical scheme, the air conditioner comprises at least two second heat exchangers for heating or refrigerating different spaces, wherein the air conditioner can run in a mixed mode, namely the second heat exchangers are used for heating and refrigerating, at the moment, the communication directions of the first four-way valve and the second four-way valve are switched, a second electromagnetic valve corresponding to at least one second heat exchanger is opened, a first electromagnetic valve corresponding to at least one second heat exchanger is opened, so that the second end of the second heat exchanger, which is used for opening the second electromagnetic valve, is communicated with an exhaust port of the compressor, the first end of the second heat exchanger, which is used for opening the second electromagnetic valve, is respectively communicated with the first end of the first heat exchanger, the first end of the third heat exchanger and the first end of the second heat exchanger, which is used for opening the first electromagnetic valve, and further the at least one second heat exchanger is used for heating and refrigerating.
According to a third aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the method for controlling an air conditioner according to any one of the above second aspects, and therefore has all the technical effects of the method for controlling an air conditioner, which are not described herein again.
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 view illustrating an air conditioner according to an embodiment of the present invention;
FIG. 2 shows a schematic structural diagram of a photovoltaic power generation apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view showing still another structure of a photovoltaic power generation apparatus according to an embodiment of the present invention;
FIG. 4 is another schematic structural view of a photovoltaic power generation apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view showing still another structure of a photovoltaic power generation apparatus according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 7 is another flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 8 is another flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:
100 air conditioner, 102 first heat exchanger, 104 compressor, 1040 return air port, 1042 exhaust port, 106 second heat exchanger, 108 first four-way valve, 110 second four-way valve, 112 photovoltaic power generation device, 1120 third heat exchanger, 1122 solar cell panel, 1124 heat preservation layer, 1126 shell, 114 first electromagnetic valve, 116 second electromagnetic valve, 118 first throttling element, 120 second throttling element, 122 third throttling element, 124 first stop valve, 126 second stop valve, 128 third stop valve, 130 gas-liquid separator, 132 fan.
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 in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An air conditioner 100, a control method of the air conditioner, and a storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 8.
The first embodiment is as follows:
as shown in fig. 1, according to an embodiment of the first aspect of the present invention, the present invention provides an air conditioner 100, including: a first heat exchanger 102, a compressor 104, at least one second heat exchanger 106, a first four-way valve 108, a second four-way valve 110, at least one third heat exchanger 1120, and a photovoltaic power plant 112.
Specifically, the compressor 104 includes a return air port 1040 and an exhaust port 1042, a first end of the second heat exchanger 106 is communicated with a first end of the first heat exchanger 102, a second end of the second heat exchanger 106 is communicated with the return air port 1040 of the compressor 104, the first four-way valve 108 is respectively communicated with the exhaust port 1042 of the compressor 104, a second end of the first heat exchanger 102, and the return air port 1040 of the compressor 104, the second four-way valve 110 is respectively communicated with the exhaust port 1042 of the compressor 104, the return air port 1040 of the compressor 104, and a second end of the second heat exchanger 106, a first end of the third heat exchanger 1120 is communicated with a first end of the first heat exchanger 102, a second end of the third heat exchanger 1120 is communicated with the return air port 1040 of the compressor 104, and the photovoltaic power generation device 112 is disposed corresponding to the third heat exchanger 1120.
In the air conditioner 100 provided by the present invention, the compressor 104, the first heat exchanger 102, the second heat exchanger 106, the first four-way valve 108 and the second four-way valve 110 form a heat exchange flow path, the first four-way valve 108 and the second four-way valve 110 are used for switching the flow direction of the refrigerant in the heat exchange flow path so as to realize the cooling and heating of the air conditioner 100, the first end of the second heat exchanger 106 is communicated with the first end of the first heat exchanger 102, at least three interfaces of the first four-way valve 108 are respectively communicated with the exhaust port 1042 of the compressor 104, the second end of the first heat exchanger 102 and the return air port 1040 of the compressor 104, at least three interfaces of the second four-way valve 110 are respectively communicated with the exhaust port 1042 of the compressor 104, the return air port 1040 of the compressor 104 and the second end of the second heat exchanger 106, that is, that the second end of the second heat exchanger 106 has two branches, so that the second end of the second heat exchanger 106 is respectively communicated with the return air port 1040 of the compressor 104 and the second four-way valve 110, therefore, when the second end of the second heat exchanger 106 is communicated with the air return port 1040 of the compressor 104, the second heat exchanger 106 can realize refrigeration, when the second end of the second heat exchanger 106 is communicated with the second four-way valve 110, the heating of the second heat exchanger 106 can be realized, the first end of the third heat exchanger 1120 is communicated with the first end of the first heat exchanger 102 and the first end of the second heat exchanger 106, and the second end of the third heat exchanger 1120 is communicated with the air return port 1040 of the compressor 104, therefore, no matter the air conditioner 100 is in a refrigeration mode or a heating mode, the third heat exchanger 1120 can be used as an evaporator, the photovoltaic power generation device 112 is arranged corresponding to the third heat exchanger 1120, the heat dissipation effect of the photovoltaic power generation device 112 is improved, the photoelectric conversion efficiency of the photovoltaic power generation device 112 is improved, the electric quantity generated by the photovoltaic power generation device 112 is improved, and meanwhile, during the process of absorbing solar energy by the photovoltaic power generation device 112, heat may be dissipated, and further, the photovoltaic power generation device 112 may dissipate more heat than the air, i.e., the photovoltaic power generation device 112 may also provide a heat source with a higher temperature than the air for the air conditioner 100, and accordingly, the efficiency of the air conditioner 100 is improved. Further, when the exhaust port 1042 of the compressor 104 is communicated with the second end of the second heat exchanger 106 through the second four-way valve 110, at least one second heat exchanger 106 heats, and when the first heat exchanger 102 frosts and needs to be defrosted, the communication direction of the second four-way valve 110 can be kept unchanged, and the communication direction of the first four-way valve 108 is switched, so that the exhaust port 1042 of the compressor 104 is also communicated with the second end of the first heat exchanger 102 through the first four-way valve 108, and thus, a high-temperature and high-pressure refrigerant flows to the first heat exchanger 102 and the second heat exchanger 106 from the exhaust port 1042 of the compressor 104 respectively, and a technical effect of defrosting the first heat exchanger 102 under the condition that the second heat exchanger 106 heats is realized.
Specifically, when at least one second heat exchanger 106 heats, the exhaust port 1042 of the compressor 104 communicates with the second end of the second heat exchanger 106 through the second four-way valve 110, the first end of the second heat exchanger 106 communicates with the first end of the first heat exchanger 102 and the first end of the third heat exchanger 1120 respectively, and the second end of the first heat exchanger 102 and the second end of the third heat exchanger 1120 both communicate with the return port 1040 of the compressor 104. The refrigerant is compressed to a high-temperature and high-pressure state in the compressor 104, flows to the second heat exchanger 106 through the second four-way valve 110 to be heated, then is divided into two paths through the second heat exchanger 106, wherein one path flows to the first heat exchanger 102 to be cooled and then returns to the return air port 1040 of the compressor 104 through the first four-way valve 108, and the other path flows to the third heat exchanger 1120 to be cooled and then returns to the return air port 1040 of the compressor 104.
Specifically, when the at least one second heat exchanger 106 is used for heating, when the first heat exchanger 102 is defrosted, the exhaust port 1042 of the compressor 104 is respectively communicated with the second end of the first heat exchanger 102 and the second end of the at least one second heat exchanger 106, the first end of the first heat exchanger 102 and the first end of the second heat exchanger 106 are both communicated with the first end of the third heat exchanger 1120, the second end of the third heat exchanger 1120 is communicated with the return port 1040 of the compressor 104, and after the refrigerant is compressed in the compressor 104 to be in a high-temperature high-pressure state, the refrigerant is divided into two paths, wherein one path flows to the first heat exchanger 102 for heating and defrosting, then flows to the third heat exchanger 1120, then returns to the return port 1040 of the compressor 104, and the other path flows to the second heat exchanger 106 for heating, then flows to the third heat exchanger 1120, and then returns to the return port 1040 of the compressor 104.
It can be understood that heat exchange tubes are disposed inside the first heat exchanger 102, the second heat exchanger 106, and the third heat exchanger 1120, and tube openings of the heat exchange tubes are correspondingly located at ends of the first heat exchanger 102, the second heat exchanger 106, and the third heat exchanger 1120, respectively, so that the first heat exchanger 102, the second heat exchanger 106, and the third heat exchanger 1120 have a first end and a second end that can communicate with other structures.
Specifically, the first heat exchanger 102 is an outdoor heat exchanger, and the second heat exchanger 106 is an indoor heat exchanger.
It can be understood that the photovoltaic power generation device 112 and the third heat exchanger 1120 are correspondingly disposed, the photovoltaic power generation device 112 may be attached to the third heat exchanger 1120, or a certain distance may be provided between the photovoltaic power generation device 112 and the third heat exchanger 1120, so that the photovoltaic power generation device 112 is cooled by the third heat exchanger 1120, the photovoltaic power generation device 112 and the third heat exchanger 1120 may be separated or integrated, and the photovoltaic power generation device 112 and the third heat exchanger 1120 may also be detached from the heat exchange flow path of the air conditioner 100.
Example two:
as shown in fig. 1, according to an embodiment of the present invention, the features defined in the above embodiment are included, and further: the air conditioner 100 further includes: a first solenoid valve 114 disposed between a second end of the second heat exchanger 106 and a return port 1040 of the compressor 104; and a second solenoid valve 116 disposed between a second end of second heat exchanger 106 and second four-way valve 110.
In this embodiment, the second end of the second heat exchanger 106 has two branches, and the two branches are respectively communicated with the return port 1040 of the compressor 104 and the second four-way valve 110, wherein the first solenoid valve 114 is disposed between the second end of the second heat exchanger 106 and the return port 1040 of the compressor 104 to control on/off of a pipeline between the return port 1040 of the compressor 104 and the second heat exchanger 106, and the second solenoid valve 116 is disposed between the second end of the second heat exchanger 106 and the second four-way valve 110 to control on/off of a pipeline between the second heat exchanger 106 and the second four-way valve 110, so as to achieve heating or cooling of the second heat exchanger 106.
Specifically, the first solenoid valve 114 and the second solenoid valve 116 are both in a normally closed state.
Specifically, the first heat exchanger 102, the second heat exchanger 106, the third heat exchanger 1120, the compressor 104, the first four-way valve 108, and the second four-way valve 110 are all communicated through pipes.
Example three:
as shown in fig. 1, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further, the air conditioner 100 further includes: a first throttling element 118 provided on the pipe to which the first end of the first heat exchanger 102 is connected; a second throttling element 120 disposed on the conduit to which the first end of the second heat exchanger 106 is connected; and a third throttling element 122 disposed on a pipe to which a first end of the third heat exchanger 1120 is connected.
In this embodiment, the air conditioner 100 further includes a first throttling element 118, a second throttling element 120, and a third throttling element 122 for throttling the refrigerant in the pipe to depressurize the refrigerant, and specifically, the first throttling element 118 is provided on the pipe to which the first end of the first heat exchanger 102 is connected to throttle the refrigerant flowing to the first heat exchanger 102 to depressurize, the second throttling element 120 is provided on the pipe to which the first end of the second heat exchanger 106 is connected to throttle the refrigerant flowing to the second heat exchanger 106 to depressurize, and the third throttling element 122 is provided on the pipe to which the first end of the third heat exchanger 1120 is connected to throttle the refrigerant flowing to the third heat exchanger 1120 to depressurize.
Further, the first throttling element 118 and/or the second throttling element 120 and/or the third throttling element 122 are electronic expansion valves or capillary tubes.
Further, the air conditioner 100 further includes: a first cutoff valve 124 provided on a pipe to which a first end of the first heat exchanger 102 is connected; a second shutoff valve 126 provided on a pipe to which a return port 1040 of the compressor 104 is connected; and a third cut-off valve 128 provided on a pipe through which the second four-way valve 110 communicates with a second end of the second heat exchanger 106.
In this embodiment, the air conditioner 100 further includes a first stop valve 124, a second stop valve 126, and a third stop valve 128, which can block the pipeline to prevent the refrigerant from flowing or leaking when the refrigerant is injected into the air conditioner 100, or can block the pipeline to change the flow direction of the refrigerant.
Specifically, the first stop valve 124 is disposed on a pipe connected to a first end of the first heat exchanger 102, and relative to a connection point where the pipe communicates with the second heat exchanger 106 and the third heat exchanger 1120, the first stop valve 124 is located at a side of the connection point close to the first heat exchanger 102; the second stop valve 126 is disposed on the pipe connected to the return port 1040 of the compressor 104, and the second stop valve 126 is located on the side of the connection close to the compressor 104, relative to the connection of the pipe connected to the return port 1040 and the second heat exchanger 106 and the third heat exchanger 1120; a third shut-off valve 128 is provided on a conduit where second four-way valve 110 communicates with the second end of second heat exchanger 106, and third shut-off valve 128 is located on a side of the junction close to second four-way valve 110 with respect to the junction between second four-way valve 110 and the second end of second heat exchanger 106, so that first shut-off valve 124 is located on the main conduit to which the first end of first heat exchanger 102 is connected, second shut-off valve 126 is located on the main conduit to which return port 1040 of compressor 104 is connected, and third shut-off valve 128 is located on the main conduit to which one port of second four-way valve 110 is connected, so that when first shut-off valve 124, second shut-off valve 126, and third shut-off valve 128 are closed, the connected branch conduits of the entire conduits cannot flow refrigerant.
Example four:
as shown in fig. 1, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: the number of the second heat exchangers 106 is at least two, and the number of the third heat exchangers 1120 is at least two.
In this embodiment, the number of the second heat exchangers 106 is at least two, so that the air conditioner 100 can cool or heat a plurality of spaces, and the number of the third heat exchangers 1120 is at least two, and accordingly, the number of the photovoltaic power generation devices 112 is at least two, so that at least two photovoltaic power generation devices 112 can dissipate heat through the air conditioner 100.
Specifically, when the first electromagnetic valve 114 corresponding to at least one second heat exchanger 106 is opened and the second electromagnetic valve 116 corresponding to another at least one second heat exchanger 106 is opened, the second heat exchanger 106 corresponding to the first electromagnetic valve 114 is opened to cool and the second heat exchanger 106 corresponding to the second electromagnetic valve 116 is opened to heat, that is, the on-off of the first electromagnetic valve 114 and the second electromagnetic valve 116 is controlled to enable at least two second heat exchangers 106 to have heating and cooling functions, thereby implementing a mixing mode of the air conditioner 100.
Further, as shown in fig. 1, the air conditioner 100 further includes: a gas-liquid separator 130, the gas-liquid separator 130 comprising a first port in communication with a return port 1040 of the compressor 104 and a second port in communication with a first four-way valve 108, a second four-way valve 110, a second end of the second heat exchanger 106, and a second end of the third heat exchanger 1120, respectively; a fan 132 disposed corresponding to the first heat exchanger 102; the first heat exchanger 102, the second heat exchanger 106, the third heat exchanger 1120, the compressor 104, the first four-way valve 108, the second four-way valve 110, and the gas-liquid separator 130 are communicated with each other through pipelines.
In this embodiment, the air conditioner 100 further includes a gas-liquid separator 130 and a fan 132, a first port of the gas-liquid separator 130 is communicated with a return air port 1040 of the compressor 104, and a second port is communicated with the first four-way valve 108, the second four-way valve 110, a second end of the second heat exchanger 106, and a second end of the third heat exchanger 1120, that is, the first four-way valve 108, the second four-way valve 110, the second heat exchanger 106, and the third heat exchanger 1120 are all communicated with the return air port 1040 of the compressor 104 through the gas-liquid separator 130, so that the refrigerant that has completed heat exchange in the heat exchange flow path flows to the gas-liquid separator 130 for gas-liquid separation and then returns to the return air port 1040 of the compressor 104, thereby improving the compression efficiency of the compressor 104 and the cooling or heating efficiency of the air conditioner 100; the fan 132 is disposed corresponding to the first heat exchanger 102, and the heat exchange efficiency of the first heat exchanger 102 can be improved by the fan 132.
Example five:
as shown in fig. 2 to 5, according to an embodiment of the present invention, including the features defined in any of the above embodiments, and further: the photovoltaic power generation apparatus 112 includes a third heat exchanger 1120, and the photovoltaic power generation apparatus 112 further includes: a housing 1126; a solar cell panel 1122 provided corresponding to the third heat exchanger 1120, the third heat exchanger 1120 and the solar cell panel 1122 being mounted on the housing 1126; and an insulating layer 1124 disposed inside the housing 1126, and the third heat exchanger 1120 is located between the insulating layer 1124 and the solar cell panel 1122.
In this embodiment, as shown in fig. 2, the photovoltaic power generation apparatus 112 includes a third heat exchanger 1120, a solar panel 1122, a housing 1126, and an insulating layer 1124, that is, the third heat exchanger 1120 is a part of the photovoltaic power generation apparatus 112, the solar panel 1122, the housing 1126, the insulating layer 1124, and the third heat exchanger 1120 integrally form the photovoltaic power generation apparatus 112, and further, the photovoltaic power generation apparatus 112 can be selectively installed, that is, when the photovoltaic power generation apparatus 112 is needed, two ends of the third heat exchanger 1120 can be respectively connected to a pipeline connected to the first end of the first heat exchanger 102 and a return air port 1040 of the compressor 104 through an element such as a three-way valve, and when the photovoltaic power generation apparatus 112 is not needed to be installed, the photovoltaic power generation apparatus 112 can be detached, so that a user can freely select whether to install the photovoltaic power generation apparatus 112. Further, as shown in fig. 3, the solar panel 1122 and the third heat exchanger 1120 are installed in the housing 1126, and the third heat exchanger 1120 is located between the solar panel 1122 and the insulating layer 1124, so as to dissipate heat from the solar panel 1122, and the insulating layer 1124 plays a role in heat insulation, thereby improving a heat dissipation effect on the solar panel 1122.
Specifically, fig. 4 is a schematic diagram of the assembled photovoltaic power generation apparatus 112, and fig. 5 is another schematic diagram of an exploded structure of the photovoltaic power generation apparatus 112.
Further, the photovoltaic power generation apparatus 112 further includes: the electricity storage structure is connected to the solar cell panel 1122.
In this embodiment, the photovoltaic power generation apparatus 112 further includes an electricity storage structure, which may provide a household power source or direct grid-connected power generation.
Further, the accumulator structure is connected to the compressor 104.
In this embodiment, the power storage structure is connected to the compressor 104, so that the power storage structure can supply power to the air conditioner 100, and the air conditioner 100 does not need other power sources or only needs other power sources to provide a small amount of power, thereby saving energy and protecting environment.
Specifically, the photovoltaic power generation device 112 and the heat exchange flow path are connected by a first stop valve 124 and a second stop valve 126, and the two systems can be separated by the two stop valves, so that the photovoltaic power generation device 112 becomes an auxiliary component of an air conditioning system, and is freely installed by a user.
Example six:
according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: third heat exchanger 1120 is a microchannel heat exchanger.
In the embodiment, compared with a conventional heat exchanger, the micro-channel heat exchanger is small in size, large in heat exchange coefficient and high in heat exchange efficiency, and can meet the higher energy efficiency standard. The micro-channel heat exchange technology is applied to cooling of the solar panel 1122, and the refrigeration requirement of the solar panel 1122 can be well met.
Example seven:
according to an embodiment of the present invention, as shown in fig. 1, the number of the second heat exchangers 106 is three, the number of the third heat exchangers 1120 is two, when the air conditioner 100 operates in the cooling mode, the first solenoid valves 114 corresponding to the three second heat exchangers 106 are all opened, the second solenoid valves 116 are all closed, the high-temperature and high-pressure refrigerant coming out of the compressor 104 flows to the first heat exchanger 102 through the first four-way valve 108 to be condensed and heat-exchanged, passes through the electronic expansion valve (the first throttling element 118) and is divided into two paths, one path of the refrigerant is throttled and decompressed into a low-temperature and low-pressure refrigerant through the throttling capillary tube (the third throttling element 122), then flows to the third heat exchanger 1120 and is cooled in the third heat exchanger 1120 to dissipate heat of the photovoltaic power generation device 112, then flows back to the compressor 104 through the gas-liquid separator 130 after passing through the second stop valve 126, the other path is throttled into a low-temperature and low-pressure refrigerant through the second throttling element 120, then the refrigerant is evaporated by the second heat exchanger 106, passes through the first electromagnetic valve 114 after the refrigeration is finished, flows back to the gas-liquid separator 130, and then returns to the compressor 104, thereby completing the refrigeration cycle.
As shown in fig. 1, when the air conditioner 100 operates in the heating mode, the first solenoid valves 114 corresponding to all the second heat exchangers 106 are closed, the second solenoid valves 116 corresponding to all the second heat exchangers 106 are opened, the high-temperature and high-pressure refrigerant flowing out of the compressor 104 passes through the second four-way valve 110, then passes through the second solenoid valves 116 to the second heat exchangers 106 respectively to be condensed and release heat, then passes through the electronic expansion valve (the second throttling element 120) and then is divided into two paths, one path is throttled and reduced in pressure by the throttling capillary tube (the third throttling element 122) to be low-temperature and low-pressure refrigerant, evaporates and absorbs heat in the third heat exchanger 1120 to dissipate heat of the photovoltaic power generation device 112, and then returns to the return port 1040 of the compressor 104 by the gas-liquid separator 130; the other path of the refrigerant is decompressed into low-temperature and low-pressure refrigerant by the first throttling element 118, flows to the first heat exchanger 102 to be evaporated and absorb heat, flows to the gas-liquid separator 130 by the first four-way valve 108 to be subjected to gas-liquid separation, and returns to the gas return port 1040 of the compressor 104.
When the air conditioner 100 operates in the hybrid mode, as shown in fig. 1, specifically, the three second heat exchangers 106 are a1, b1 and c1, the corresponding first solenoid valves 114 are a2, b2 and c2, the corresponding second solenoid valves 116 are a3, b3 and c3, if the second heat exchanger a1 refrigerates, the second heat exchanger b1 and the second heat exchanger c1 heat, the first solenoid valve a2 is opened, the second solenoid valve a3 is closed, the first solenoid valve b2 and the first solenoid valve c2 are closed, the second solenoid valve b3 and the second solenoid valve c3 are opened, the high-pressure high-temperature refrigerant compressed from the compressor 104 passes through the second four-way valve 110, passes through the second solenoid valve b3 and the second solenoid valve c3, is condensed and heat exchanged to the second heat exchanger b1 and the second heat exchanger c1, so as to achieve the heating function, and is divided into the second throttling element 120, and one path of the three paths of the low-temperature throttling element 122, the third heat exchanger 1120 cools and absorbs heat, and returns to the gas-liquid separator 130 and then to the compressor 104 after passing through the second stop valve 126; the second path is decompressed into low-temperature and low-pressure refrigerant by the second throttling element 120, evaporated by the second heat exchanger a1, cooled, returned to the gas-liquid separator 130 by the first electromagnetic valve a2, and returned to the compressor 104; the third path is decompressed into low-temperature and low-pressure refrigerant by the second throttling element 120, evaporated by the first heat exchanger 102, returned to the gas-liquid separator 130 by the first four-way valve 108, and returned to the compressor 104, completing the cycle.
When the air conditioner 100 operates in the defrosting mode, no matter in the heating mode or in the mixed mode, when the first heat exchanger 102 is frosted and needs defrosting operation, the first four-way valve 108 is reversed, so that the first heat exchanger 102 is switched to be a condenser, high-pressure and high-temperature refrigerant compressed from the compressor 104 passes through the first four-way valve 108 and is condensed and exchanged with the first heat exchanger 102, and the second heat exchanger 106 can keep the current operation mode, so that defrosting without stopping is realized.
Example eight:
according to the second aspect of the invention, the invention also provides a control method of the air conditioner.
Fig. 6 is a flowchart illustrating a control method of an air conditioner according to the present invention, as shown in fig. 6, the method including:
step 602: acquiring operation parameters of the air conditioner based on the condition of heating of at least one second heat exchanger;
step 604: and on the basis of the condition that the running parameters meet the defrosting condition, keeping the communication direction of the second four-way valve unchanged, and switching the communication direction of the first four-way valve so as to enable the exhaust port of the compressor to be respectively communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger.
In this embodiment, under the condition that the at least one second heat exchanger heats, the operation parameters of the air conditioner are acquired, and when the operation parameters of the air conditioner indicate that the first heat exchanger frosts and needs defrosting, the communication direction of the second four-way valve is kept unchanged, that is, the operation mode before the second heat exchanger is kept unchanged, and the communication direction of the first four-way valve is changed, so that the exhaust port of the compressor is respectively communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger, and the first heat exchanger is defrosted on the basis of heating of the at least one second heat exchanger.
Specifically, the defrosting condition is met based on the operation parameters, the communication direction of the second four-way valve is kept unchanged, and the communication direction of the first four-way valve is switched to enable the exhaust port of the compressor to be communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger respectively, the first end of the first heat exchanger and the first end of the at least one second heat exchanger are communicated with the first end of the third heat exchanger, and the return air port of the compressor is communicated with at least the second end of the third heat exchanger.
Specifically, the step of determining whether the first heat exchanger needs defrosting according to the operation parameters of the air conditioner may be to acquire the temperature of the first heat exchanger, when the temperature of the first heat exchanger is lower than a preset temperature, the operation parameters of the air conditioner are considered to meet defrosting conditions, or may be to acquire the temperature of the outdoor environment, when the temperature of the outdoor environment is lower than the preset value, the operation parameters of the air conditioner are considered to meet defrosting conditions, and of course, whether the air conditioner needs defrosting may be determined based on other determination conditions.
Example nine:
fig. 7 is a flowchart illustrating a control method of an air conditioner according to the present invention, as shown in fig. 7, the method including:
step 702: switching the communication direction of the first four-way valve and the second four-way valve, and starting a second electromagnetic valve corresponding to the at least one second heat exchanger so as to enable the exhaust port of the compressor to be communicated with the second end of the at least one second heat exchanger;
step 704: acquiring operating parameters of an air conditioner;
step 706: and on the basis of the condition that the running parameters meet the defrosting condition, keeping the communication direction of the second four-way valve unchanged, and switching the communication direction of the first four-way valve so as to enable the exhaust port of the compressor to be respectively communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger.
In this embodiment, in a case that at least one second heat exchanger is used for heating, the first heat exchanger may be used as an evaporator to frost, that is, in such a case, the first heat exchanger needs to be defrosted, where the number of the second heat exchangers may be multiple, and then at least one second heat exchanger needs to be heated, at this time, the communication directions of the first four-way valve and the second four-way valve are switched, and the second electromagnetic valve corresponding to at least one second heat exchanger is opened, so that the exhaust port of the compressor is communicated with the second end of at least one second heat exchanger, so that at least one second heat exchanger is heated. Specifically, all the second heat exchangers are heated, that is, the air conditioner is in a heating mode.
Specifically, the communication directions of the first four-way valve and the second four-way valve are switched, and a second electromagnetic valve corresponding to the at least one second heat exchanger is opened, so that an exhaust port of the compressor is communicated with a second end of the at least one second heat exchanger, a first end of the at least one second heat exchanger is respectively communicated with a first end of the first heat exchanger and a first end of the third heat exchanger, and both the second end of the first heat exchanger and a second end of the third heat exchanger are communicated with an air return port of the compressor, so that the at least one second heat exchanger heats.
Example ten:
fig. 8 is a flowchart illustrating a control method of an air conditioner according to the present invention, and as shown in fig. 8, the method includes:
step 802: switching the communication direction of the first four-way valve and the second four-way valve, and opening a second electromagnetic valve corresponding to at least one second heat exchanger and opening a first electromagnetic valve corresponding to at least one second heat exchanger; so that the second end of the second heat exchanger for opening the second electromagnetic valve is communicated with the exhaust port of the compressor, and the first end of the second heat exchanger for opening the second electromagnetic valve is respectively communicated with the first end of the first heat exchanger, the first end of the third heat exchanger and the first end of the second heat exchanger for opening the first electromagnetic valve;
step 804: acquiring operating parameters of an air conditioner;
step 806: and on the basis of the condition that the running parameters meet the defrosting condition, keeping the communication direction of the second four-way valve unchanged, and switching the communication direction of the first four-way valve so as to enable the exhaust port of the compressor to be respectively communicated with the second end of the first heat exchanger and the second end of the at least one second heat exchanger.
In this embodiment, the air conditioner includes at least two second heat exchangers to heat or refrigerate different spaces, wherein the air conditioner may operate a mixed mode, that is, both heating and refrigerating are present in the second heat exchangers, at this time, the communication directions of the first four-way valve and the second four-way valve are switched, the second solenoid valve corresponding to the at least one second heat exchanger is turned on, and the first solenoid valve corresponding to the at least one second heat exchanger is turned on, so that the second end of the second heat exchanger where the second solenoid valve is turned on is communicated with the exhaust port of the compressor, the first end of the second heat exchanger where the second solenoid valve is turned on is respectively communicated with the first end of the first heat exchanger, the first end of the third heat exchanger, and the first end of the second heat exchanger where the first solenoid valve is turned on, so that the at least one second heat exchanger heats, and the at least one second heat exchanger refrigerates.
Specifically, when the air conditioner runs in the mixed mode, the second end of the second heat exchanger for opening the second electromagnetic valve is communicated with the exhaust port of the compressor, the first end of the second heat exchanger for opening the second electromagnetic valve is communicated with the first end of the first heat exchanger, the first end of the third heat exchanger and the first end of the second heat exchanger for opening the first electromagnetic valve respectively, and the second end of the first heat exchanger, the second end of the third heat exchanger and the second end of the second heat exchanger for opening the first electromagnetic valve are communicated with the return air port of the compressor, so that at least one of the at least two second heat exchangers heats and at least one of the second heat exchangers refrigerates.
Example eleven:
according to a third aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the method for controlling an air conditioner according to any one of the embodiments of the second aspect, so as to achieve all the technical effects of the method for controlling an air conditioner, and the method is not repeated herein.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; "coupled" may be direct or indirect through an intermediary. 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 (12)

1. An air conditioner, comprising:
a first heat exchanger;
a compressor including a return air port and an exhaust port;
the first end of the second heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the second heat exchanger is communicated with the return air port of the compressor;
the first four-way valve is respectively communicated with an exhaust port of the compressor, the second end of the first heat exchanger and a return air port of the compressor;
the second four-way valve is respectively communicated with an exhaust port of the compressor, a return air port of the compressor and a second end of the second heat exchanger;
the first end of the third heat exchanger is communicated with the first end of the first heat exchanger, and the second end of the third heat exchanger is communicated with the return air port of the compressor;
the photovoltaic power generation device is arranged corresponding to the third heat exchanger;
a first solenoid valve disposed between a second end of the second heat exchanger and a return port of the compressor;
the second electromagnetic valve is arranged between the second end of the second heat exchanger and the second four-way valve;
the first electromagnetic valve and the second electromagnetic valve are both in a normally closed state;
the first stop valve is arranged on a pipeline connected with the first end of the first heat exchanger and is opposite to a connection part where the pipeline connected with the first end of the first heat exchanger is communicated with the second heat exchanger and the third heat exchanger, and the first stop valve is positioned at one side of the connection part close to the first heat exchanger;
the second stop valve is arranged on a pipeline connected with a return air port of the compressor, and is positioned at one side of the connection position close to the compressor relative to the connection positions of the pipeline connected with the return air port, the second heat exchanger and the third heat exchanger;
and the third stop valve is arranged on a pipeline communicated with the second end of the second heat exchanger through the second four-way valve, and is positioned on one side of the joint close to the second four-way valve relative to the joint between the second four-way valve and the second end of the second heat exchanger.
2. The air conditioner according to claim 1, further comprising:
a first throttling element arranged on a pipeline connected with a first end of the first heat exchanger;
the second throttling element is arranged on a pipeline connected with the first end of the second heat exchanger;
a third throttling element disposed on a pipe to which the first end of the third heat exchanger is connected.
3. The air conditioner according to claim 1 or 2,
the number of the second heat exchangers is at least two, and the number of the third heat exchangers is at least two.
4. The air conditioner according to claim 1 or 2, further comprising:
the gas-liquid separator comprises a first port and a second port, the first port is communicated with a return air port of the compressor, and the second port is respectively communicated with the first four-way valve, the second four-way valve, a second end of the second heat exchanger and a second end of the third heat exchanger;
the fan is arranged corresponding to the first heat exchanger;
the first heat exchanger, the second heat exchanger, the third heat exchanger, the compressor, the first four-way valve, the second four-way valve and the gas-liquid separator are communicated through pipelines.
5. The air conditioner according to claim 1 or 2, wherein the photovoltaic power generation apparatus includes the third heat exchanger, the photovoltaic power generation apparatus further comprising:
a housing;
the solar panel is arranged corresponding to the third heat exchanger, and the third heat exchanger and the solar panel are arranged on the shell;
and the heat preservation layer is arranged in the shell, and the third heat exchanger is positioned between the heat preservation layer and the solar cell panel.
6. The air conditioner according to claim 5, wherein the photovoltaic power generation apparatus further comprises:
and the electric power storage structure is connected with the solar cell panel.
7. The air conditioner according to claim 6,
the electricity storage structure is connected with the compressor.
8. The air conditioner according to claim 5,
the third heat exchanger is a microchannel heat exchanger.
9. A control method of an air conditioner for the air conditioner according to any one of claims 1 to 8, characterized by comprising:
acquiring operation parameters of the air conditioner based on the condition that at least one second heat exchanger heats;
based on the operation parameters meeting the defrosting condition, keeping the communication direction of the second four-way valve unchanged, and switching the communication direction of the first four-way valve to enable the exhaust port of the compressor to be communicated with the second end of the first heat exchanger and the second end of at least one second heat exchanger respectively;
the operating parameter comprises the temperature of the first heat exchanger, and the defrosting condition comprises that the temperature of the first heat exchanger is lower than a preset temperature.
10. The method as claimed in claim 9, wherein the step of obtaining the operating parameter of the air conditioner based on the condition that the at least one second heat exchanger is heating is preceded by the steps of:
and switching the communication direction of the first four-way valve and the second four-way valve, and starting a second electromagnetic valve corresponding to at least one second heat exchanger so as to communicate the exhaust port of the compressor with the second end of at least one second heat exchanger.
11. The method for controlling an air conditioner according to claim 10, wherein the number of the second heat exchangers is at least two, and the step of obtaining the operation parameters of the air conditioner based on the condition that the at least one second heat exchanger is used for heating is preceded by the steps of:
switching the communication direction of the first four-way valve and the second four-way valve, and opening at least one second electromagnetic valve corresponding to the second heat exchanger and at least one first electromagnetic valve corresponding to the second heat exchanger;
so that the second end of the second heat exchanger, at which the second solenoid valve is opened, is communicated with the exhaust port of the compressor, and the first end of the second heat exchanger, at which the second solenoid valve is opened, is respectively communicated with the first end of the first heat exchanger, the first end of the third heat exchanger, and the first end of the second heat exchanger, at which the first solenoid valve is opened.
12. A computer-readable storage medium on which a computer program is stored, the computer program realizing the control method of the air conditioner according to any one of claims 9 to 11 when executed by a processor.
CN201911193083.XA 2019-11-28 2019-11-28 Air conditioner, control method of air conditioner, and storage medium Active CN110848850B (en)

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