CN115143591B - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN115143591B
CN115143591B CN202210761276.6A CN202210761276A CN115143591B CN 115143591 B CN115143591 B CN 115143591B CN 202210761276 A CN202210761276 A CN 202210761276A CN 115143591 B CN115143591 B CN 115143591B
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CN
China
Prior art keywords
air
refrigerant
valve
indoor
air conditioner
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.)
Active
Application number
CN202210761276.6A
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Chinese (zh)
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CN115143591A (en
Inventor
刘腾
李本卫
张然
张绍良
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.)
Hisense Air Conditioning Co Ltd
Original Assignee
Hisense Air Conditioning 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 Hisense Air Conditioning Co Ltd filed Critical Hisense Air Conditioning Co Ltd
Priority to CN202210761276.6A priority Critical patent/CN115143591B/en
Publication of CN115143591A publication Critical patent/CN115143591A/en
Priority to PCT/CN2023/085940 priority patent/WO2024001376A1/en
Application granted granted Critical
Publication of CN115143591B publication Critical patent/CN115143591B/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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/526—Indication arrangements, e.g. displays giving audible indications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • 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
    • 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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an air conditioner. The air conditioner comprises an air conditioner indoor unit, an indoor heat exchanger, an air outlet, a first air deflector and a second air deflector, wherein the first air deflector and the second air deflector are arranged at the air outlet, the first air deflector transversely extends, the second air deflector vertically extends, and a concentration sensor is connected with a controller and is used for measuring the concentration of a refrigerant in the indoor and uploading the concentration sensor to the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller controls the first air deflector to rotate to a preset blowing-out angle beta, and controls the second air deflector to swing at a preset swing frequency v5, so that the air-conditioning wind is uniformly blown out at the lower part of the indoor space. The air conditioner distributes air conditioning wind carrying refrigerant to the lower part of an indoor space by adjusting the blowing angle of the first air deflector and the swing frequency of the second air deflector.

Description

Air conditioner
Technical Field
The invention relates to the technical field of household appliances, in particular to an air conditioner.
Background
With the wide use of air conditioners, the environmental protection requirements of users on the air conditioners are also continuously improved. In the prior art, the R290 refrigerant air conditioner is widely used, and the R290 air conditioner has the characteristic of environmental protection, and can avoid polluting the environment. Because the R290 refrigerant has inflammability, when the R290 refrigerant leaks, a certain risk of explosion occurs. In the related art, in order to reduce the explosion risk caused by the leakage of the R290 refrigerant, the design specification of the flammable refrigerant is according to the special requirements of the safety heat pump, the air conditioner and the dehumidifier of household and similar electric appliances in accordance with gb.4706[1].32-2012, the following two aspects are mainly included: on the one hand, the air conditioner is prevented from being dismounted in the indoor environment, the situation that the refrigerant leaks in the indoor environment due to manual dismounting is avoided, and on the other hand, a warning label is attached to the air conditioner or the vicinity of the mounting position, so that indoor personnel are reminded of paying attention to the harm of refrigerant leakage, and the two aspects are from the perspective of preventing the refrigerant leakage in the front stage.
The two methods of the disassembly prevention design and the warning label pasting of the air conditioner have certain limitations, and R290 leakage in the running process of the air conditioner cannot be prevented by a previous leakage prevention method for complex installation environments.
The anti-disassembly design of the air conditioner can prevent the air conditioner from being disassembled for the second time indoors, and prevent R290 from leaking caused by the fact that the air conditioner is disassembled and spliced again and is not clung to the air conditioner, but if the R290 leaks when the air conditioner is installed for the first time, the R290 cannot be prevented from leaking effectively by the aid of the measures. The warning label can only remind people who pay attention to the content of the warning label, and has very limited effect on people who do not pay attention to the content. Therefore, the effectiveness of the existing measures for preventing the R290 from leaking has a certain limitation, and the explosion risk caused by the R290 leakage cannot be effectively reduced.
Disclosure of Invention
The present invention solves at least one of the technical problems in the related art to a certain extent.
Therefore, the application aims at providing an air conditioner, which enables air conditioner wind carrying refrigerant to be distributed to the lower part of an indoor space by adjusting the blowing-out angle of a first air deflector and the swing frequency of a second air deflector, reduces the contact probability of the refrigerant in the air conditioner wind and an electric control system positioned on the upper part of the space, and lightens the risk of indoor explosion of the refrigerant.
According to the air conditioner of this application, include:
the air conditioner indoor unit comprises an indoor heat exchanger, an air outlet, a first air guide plate and a second air guide plate, wherein the first air guide plate and the second air guide plate are arranged at the air outlet, the first air guide plate extends transversely, and the second air guide plate extends in the upper and lower directions
An outdoor heat exchanger;
a compressor for compressing the gaseous refrigerant evaporated by the heat absorption;
an electronic expansion valve;
the pipeline, the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through pipelines;
the controller is connected with the compressor, the first air deflector and the second air deflector;
the concentration sensor is connected with the controller, and is used for measuring the concentration of the refrigerant in the room and uploading the concentration to the controller;
when the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller controls the first air deflector to rotate to a preset blowing-out angle beta, and controls the second air deflector to swing at a preset swing frequency v5, so that the air-conditioning wind is uniformly blown out at the lower part of the indoor space.
In some embodiments of the air conditioner, the first air deflector is provided with at least two first air deflectors which are arranged at intervals at the air outlet, and the first air deflector can adjust the air outlet angle of air-conditioning air blown out from the air outlet by rotating so as to change the position of the air-conditioning air blown out in the up-down direction.
In some embodiments of the air conditioner, the second air guide plate is provided with at least two, a plurality of second air guide plates which are arranged at intervals are arranged between the uppermost first air guide plate and the lowermost first air guide plate, and the second air guide plate can adjust the angle of air-conditioning air blown out from the air outlet through rotation so as to change the blowing-out position of the air-conditioning air in the left and right directions of the indoor space.
In some embodiments of the air conditioner of the present application, the air conditioner includes an electronic control system located at an upper portion of an indoor space;
the controller presets the blowing angle beta, and when the rotation angle of the first air deflector is adjusted to the blowing angle beta, the air-conditioning wind energy blown out from the air outlet is directly blown to the ground, so that the probability that the air-conditioning wind blows to the electric control system is reduced.
In some embodiments of the air conditioner of the present application, the second air deflector swings left to the maximum limit angle for a time t1, and the second air deflector swings right to the maximum limit angle again for a time t2.
In some embodiments of the air conditioner of the application, the air conditioner further comprises a first electromagnetic valve and a first stop valve, wherein the first electromagnetic valve is arranged on a pipeline between the electronic expansion valve and the indoor heat exchanger, the first stop valve is arranged on a pipeline between the first electromagnetic valve and the indoor heat exchanger, the first electromagnetic valve is used for regulating and controlling the flow of a flowing medium in a pipeline where the first electromagnetic valve is located, and the first stop valve is used for cutting off and throttling the flowing medium in the pipeline where the first stop valve is located.
In some embodiments of the air conditioner of the application, the air conditioner further comprises a four-way valve, the indoor heat exchanger and the outdoor heat exchanger are respectively connected with the compressor through the four-way valve, the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, and the compressor comprises an air suction port connected with the first valve port and an air discharge port connected with the third valve port;
when the indoor heat exchanger is used as an evaporator, the first valve port is connected with the second valve port, and the third valve port is connected with the fourth valve port;
when the indoor heat exchanger is used as a condenser, the first valve port is connected with the fourth valve port, and the second valve port is connected with the third valve port.
In some embodiments of the air conditioner, the air conditioner further comprises a second electromagnetic valve and a second stop valve, wherein the second electromagnetic valve is arranged on the pipeline between the four-way valve and the indoor heat exchanger, the second stop valve is arranged on the pipeline between the second electromagnetic valve and the indoor heat exchanger, the second electromagnetic valve is used for regulating and controlling the flow of the flowing medium in the pipeline where the second electromagnetic valve is arranged, and the second stop valve is used for cutting off and throttling the flowing medium in the pipeline where the second stop valve is arranged.
In some embodiments of the air conditioner, the air conditioner further comprises an indoor fan, when the concentration of the refrigerant is not less than a preset first concentration threshold value, the indoor fan is started and operates at a rotation speed not less than a maximum rotation speed m, so that a large amount of air conditioner wind blows into the room to dilute the concentration of the refrigerant in the room.
The air conditioner has at least the following positive effects:
the invention provides an air conditioner. The air conditioner comprises an air conditioner indoor unit, an indoor heat exchanger, an air outlet, a first air deflector and a second air deflector, wherein the first air deflector and the second air deflector are arranged at the air outlet, the first air deflector transversely extends, the second air deflector vertically extends, and a concentration sensor is connected with a controller and is used for measuring the concentration of a refrigerant in the indoor and uploading the concentration sensor to the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller controls the first air deflector to rotate to a preset blowing-out angle beta, and controls the second air deflector to swing at a preset swing frequency v5, so that the air-conditioning wind is uniformly blown out at the lower part of the indoor space. The air conditioner distributes air conditioning wind carrying refrigerant to the lower part of an indoor space by adjusting the blowing angle of the first air deflector and the swing frequency of the second air deflector, so that the contact probability of the refrigerant in the air conditioning wind and an electric control system positioned at the upper part of the space is reduced, and the risk of indoor explosion of the refrigerant is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without giving inventive effort to those skilled in the art.
FIG. 1 is a system schematic diagram of a cooling condition of an air conditioner according to an embodiment of the present application;
FIG. 2 is a system schematic diagram of a heating mode of an air conditioner according to an embodiment of the present application;
fig. 3 is a control flow intention of an instruction signal of a remote controller for operating a refrigerant recovery mode of an air conditioner according to an embodiment of the present application;
fig. 4 is a control flow intention of an instruction signal of remote control software of an operation refrigerant recovery mode of an air conditioner according to an embodiment of the present application;
fig. 5 is a control flow diagram of an operation refrigerant dilution mode of an air conditioner according to an embodiment of the present application;
fig. 6 is a schematic flowchart of a control method for controlling the first air guide plate and the second air guide plate in the operation refrigerant dilution mode of the air conditioner according to the embodiment of the present application;
fig. 7 is an external view of an air conditioning indoor unit of an air conditioner according to an embodiment of the present application;
in the above figures: 100. air-conditioning; 1. an indoor heat exchanger; 11. a first communication port; 12. a second communication port; 2. an outdoor heat exchanger; 21. a third communication port; 22. a fourth communication port; 3. a compressor; 31. an air suction port; 32. an exhaust port; 4. an electronic expansion valve; 51. a first electromagnetic valve; 52. a second electromagnetic valve; 61. a first stop valve; 62. a second shut-off valve; 7. a four-way valve; 71. a first valve port; 72. a second valve port; 73. a third valve port; 74. a fourth valve port; 8. an air conditioner indoor unit; 81. an air outlet; 82. a first air deflector; 83. and the second air deflector.
Detailed Description
The present invention will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those of ordinary skill in the art.
The air conditioner 100 includes a compressor 3, a condenser, an expansion valve, and an evaporator, and a refrigeration cycle or a heating cycle is performed through the compressor 3, the condenser, the expansion valve, and the evaporator. The refrigerating cycle and the heating cycle comprise a compression process, a condensation process, an expansion process and an evaporation process, and cold or heat is provided for the indoor space through the heat absorption and release processes of the refrigerant, so that the temperature of the indoor space is regulated.
The compressor 3 compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, and the discharged refrigerant gas flows into the condenser. The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into a liquid refrigerant, and heat is released to the surrounding environment through the condensation process.
The liquid refrigerant flowing out of the condenser enters an expansion valve, and the expansion valve expands the liquid refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid refrigerant. The low-pressure liquid refrigerant flowing out of the expansion valve enters the evaporator, and when the liquid refrigerant flows through the evaporator, the absorbed heat evaporates into a low-temperature low-pressure refrigerant gas, and the refrigerant gas in a low-temperature low-pressure state returns to the compressor 3. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. Throughout the cycle, the air conditioner may adjust the temperature of the indoor space.
The air conditioner 100 includes an air conditioner indoor unit 8, an air conditioner outdoor unit, and an expansion valve, the air conditioner indoor unit 8 includes a compressor 3 and an outdoor heat exchanger 2, the air conditioner indoor unit 8 includes an indoor heat exchanger 1, and the expansion valve may be provided in the air conditioner indoor unit 8 or the air conditioner outdoor unit.
The indoor heat exchanger 1 and the outdoor heat exchanger 2 can be used as a condenser or an evaporator. When the indoor heat exchanger 1 is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger 1 is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.
Hereinafter, embodiments of the present application will be described in detail with reference to fig. 1 to 7.
Referring to fig. 1 and 2, the air conditioner of the present application includes an indoor heat exchanger 1, an outdoor heat exchanger 2, a compressor 3, an expansion valve, and a pipe through which a refrigerant flows. The indoor heat exchanger 1 and the outdoor heat exchanger 2 are both communicated with the compressor 3. The expansion valve is an electronic expansion valve 4, and the electronic expansion valve 4 is connected between the indoor heat exchanger 1 and the outdoor heat exchanger 2, and can expand the liquid refrigerant subjected to the supercooling condensation process into a low-pressure liquid refrigerant.
The air conditioner further comprises a first electromagnetic valve 51, a second electromagnetic valve 52, a first stop valve 61, a second stop valve 62 and a four-way valve 7, wherein the first electromagnetic valve 51 is arranged on a pipeline between the electronic expansion valve 4 and the indoor heat exchanger 1 and is used for regulating and controlling the flow of flowing media in the pipeline where the first electromagnetic valve is located, the first stop valve 61 is arranged on the pipeline between the first electromagnetic valve 51 and the indoor heat exchanger 1, and the first stop valve 61 can cut off and throttle the media of the pipeline where the first stop valve 61 is located.
The air conditioner further comprises a four-way valve 7, the indoor heat exchanger 1 and the outdoor heat exchanger 2 are connected through the four-way valve 7 and the compressor 3, a second electromagnetic valve 52 is arranged on a pipeline between the four-way valve 7 and the indoor heat exchanger 1 and used for regulating and controlling the flow of flowing media in the pipeline where the two electromagnetic valves are located, a second stop valve 62 is arranged between the second electromagnetic valve 52 and the indoor heat exchanger 1, and the second stop valve 62 can cut off and throttle the media of the pipeline where the two electromagnetic valves are located.
The air conditioner further includes a controller connected to the first solenoid valve 51, the second solenoid valve 52, and the electronic expansion valve 4.
The compressor 3 includes an intake port 31 and an exhaust port 32, and the refrigerant having absorbed heat and undergone an evaporation process enters the compressor 3 through the intake port 31, and the compressor 3 compresses the gaseous refrigerant into a high-temperature and high-pressure state and then discharges the compressed gaseous refrigerant through the exhaust port 32. The air conditioner further includes an exhaust gas sensor provided on a line between the exhaust port 32 of the compressor 3 and the third valve port of the four-way valve, the exhaust gas sensor being for measuring an exhaust gas temperature of the compressor 3.
The indoor heat exchanger and the outdoor heat exchanger are respectively connected with the compressor through a four-way valve, the four-way valve 7 comprises a first valve port 71, a second valve port 72, a third valve port 73 and a fourth valve port 74, wherein an air suction port 31 of the compressor 3 is fixedly connected with the first valve port 71, and an air discharge port 32 of the compressor 3 is fixedly connected with the third valve port 73. When the air conditioner is in a refrigerating condition, the first valve port 71 is connected with the second valve port 72, and the third valve port 73 is connected with the fourth valve port 74. When the air conditioner is in a heating condition, the first valve port 71 is connected with the fourth valve port 74, and the second valve port 72 is connected with the third valve port 73.
The air conditioner further comprises a concentration sensor, wherein the concentration sensor can detect the concentration of the combustible refrigerant, and is arranged at a position where the refrigerant of the air conditioner indoor unit 8 is easy to leak. The controller is connected with the concentration sensor and can receive signals transmitted by the concentration sensor.
In the air conditioner of the present application, the refrigerant may be R290 or other flammable refrigerant.
In some embodiments, the control unit of the concentration sensor presets a first concentration threshold, when the concentration sensor detects that the concentration of the indoor refrigerant reaches the upper limit value of the first concentration threshold, the control unit of the concentration sensor judges that the indoor refrigerant leaks, the control unit of the concentration sensor sends a signal to the controller, and the controller receives the signal of refrigerant leakage.
In other embodiments, the control unit of the concentration sensor does not preset the first concentration threshold, the controller presets the first concentration threshold, the concentration sensor sends a signal of the refrigerant concentration in the indoor environment detected in real time to the controller, and the controller judges whether the refrigerant leaks in the indoor environment. When the concentration of the refrigerant reaches a first concentration threshold, the controller judges that the refrigerant leaks in the room.
In some embodiments, the preset first concentration threshold value is not greater than a refrigerant concentration value of the indoor environment, the refrigerant concentration value of the indoor environment, which is not exploded, can be obtained through experimental results or obtained through inquiring the prior art, and the preset first concentration threshold value is not greater than the refrigerant concentration value of the indoor environment, which is not exploded, so that the air conditioner can conveniently detect that an alarm is performed and a refrigerant recovery mode is triggered when the refrigerant concentration reaches a lower level, the possibility of explosion accidents caused by refrigerant leakage is reduced, and the explosion risks caused by the refrigerant leakage are further reduced.
Referring to fig. 1 and 2, in some embodiments of the present application, the indoor heat exchanger 1 includes a first communication port 11 and a second communication port 12, the first communication port 11 communicates with a first shut-off valve 61, and the second communication port 12 communicates with a second shut-off valve 62. The outdoor heat exchanger 2 includes a third communication port 21 and a fourth communication port 22, the third communication port 21 being in communication with the electronic expansion valve 4, the fourth communication port 22 being in communication with the four-way valve 7.
In some embodiments of the present application, the air conditioner includes a cooling condition and a heating condition. During refrigeration working conditions, the indoor heat exchanger 1 is an evaporator, the outdoor heat exchanger 2 is a condenser, and at the moment, the compressor 3 compresses gaseous refrigerant into a high-temperature and high-pressure state and discharges compressed refrigerant gas from an outlet of the compressor 3. The refrigerant gas enters the fourth communication port 22 of the outdoor heat exchanger 2 (condenser) through the four-way valve 7, is condensed in the outdoor heat exchanger 2 (condenser), and releases heat to the surrounding environment through the condensation process. The refrigerant gas is changed into a liquid refrigerant through the supercooling process, and the liquid refrigerant flows out from the third communication port 21 of the outdoor heat exchanger 2 (condenser) and enters the electronic expansion valve 4, and the electronic expansion valve 4 expands the liquid refrigerant in a high-pressure state into a low-pressure liquid refrigerant. The liquid refrigerant flowing out of the electronic expansion valve 4 flows through the first solenoid valve 51 and the first shutoff valve 61 in this order, and then flows into the first communication port 11 of the indoor heat exchanger 1 (evaporator). The liquid refrigerant flows through the refrigerant pipe in the indoor heat exchanger 1 (evaporator), so that the refrigerant exchanges heat with the indoor environment, when the refrigerant flows through the indoor heat exchanger 1 (evaporator), the absorbed heat becomes low-temperature low-pressure refrigerant gas, the refrigerant gas flows out from the second communication port 12 of the indoor heat exchanger 1 (evaporator), sequentially passes through the second stop valve 62, the second electromagnetic valve 52 and the four-way valve 7 and enters the air suction port 31 of the compressor 3, the compressor 3 compresses the low-temperature low-pressure refrigerant gas again to become high-temperature high-pressure refrigerant gas, and the high-temperature high-pressure refrigerant gas flows out from the air discharge port 32 of the compressor 3 and then enters the fourth communication port 22 of the condenser again to enter the condensation process. In this process, heat absorption by the indoor heat exchanger 1 to the indoor environment and heat release by the outdoor heat exchanger 2 to the outdoor environment are realized, and by consuming electric power supplied to the compressor 3, supply of cold to the indoor environment is realized, and reduction of the indoor temperature is realized.
During heating conditions, the indoor heat exchanger 1 is an evaporator, the outdoor heat exchanger 2 is a condenser, and at this time, the compressor 3 compresses the gaseous refrigerant into a high-temperature and high-pressure state and discharges the compressed refrigerant gas from the outlet of the compressor 3. The refrigerant gas passes through the four-way valve 7, sequentially passes through the second electromagnetic valve 52 and the second stop valve 62, and enters the second communication port 12 of the indoor heat exchanger 1 (condenser). The high-temperature and high-pressure refrigerant gas is condensed in the indoor heat exchanger 1 (condenser), and the heat of the refrigerant is released to the indoor environment, so that the indoor temperature is increased, and the purpose of heating is achieved. The refrigerant gas is changed into a liquid refrigerant through the condensation process, and the liquid refrigerant flows into the electronic expansion valve 4 from the first communication port 11 of the indoor heat exchanger 1 (condenser) through the first stop valve 61 and the first electromagnetic valve 51 in sequence. The electronic expansion valve 4 expands the liquid refrigerant in a high-pressure state into a low-pressure liquid refrigerant. The liquid refrigerant flowing out of the electronic expansion valve 4 flows into the third communication port 21 of the outdoor heat exchanger 2 (evaporator). The low-pressure liquid refrigerant is evaporated in the outdoor heat exchanger 2 (evaporator), absorbs heat of the outdoor environment, evaporates into low-temperature low-pressure refrigerant gas, flows out of the outdoor heat exchanger 2 (evaporator), enters the air suction port 31 of the compressor 3 through the four-way valve 7, the compressor 3 compresses the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas again, and the high-temperature high-pressure refrigerant gas is condensed again through the indoor heat exchanger 1, so that outdoor heat is transferred to the indoor environment through electric energy consumption of the compressor 3, and the temperature of the indoor environment is increased.
Referring to fig. 3, in the operation process of the air conditioner, when the controller receives a signal of leakage of the concentration of the refrigerant sent by the concentration sensor, or when the controller judges that the concentration of the refrigerant is not less than a preset first concentration threshold, the controller controls the air conditioner to enter a refrigerant recovery mode. The controller judges the working condition of the air conditioner and carries out different refrigerant recovery modes according to the current working condition of the air conditioner.
The controller presets the frequency F1 of the compressor 3 as a target frequency of the refrigerant recovery mode of the air conditioner. When the controller controls the air conditioner to enter a refrigerant recovery mode, the indoor heat exchanger is an evaporator, and the controller drives the compressor to operate at a target frequency F1.
Referring to fig. 3 and 4, according to the present application, the air conditioner further includes a remote controller for transmitting an indication signal to the controller, and a user can use the remote controller to regulate the opening and closing of the air conditioner, and the change of various parameters.
In the running process of the air conditioner, when the controller receives a signal of refrigerant concentration leakage or the controller judges that the refrigerant leakage exists indoors, the air conditioner is controlled to enter a refrigerant recovery mode, the indoor heat exchanger is an evaporator, the controller drives the compressor to run at a preset target frequency F1, the controller receives all indication signals from the remote controller, and the controller controls the air conditioner to only execute the indication signals of closing the air conditioner and opening the air conditioner sent by the remote controller.
Specifically, when the controller receives a signal of refrigerant leakage or the controller judges that the refrigerant leaks according to the signal transmitted by the concentration sensor, the controller only allows the air conditioner to execute the on and off signals transmitted by the remote controller, and the controller does not execute the signals except the on and off signals transmitted by the remote controller after receiving the signals, so that the refrigerant recovery mode is prevented from being interfered by the operation of a user on the remote controller, the refrigerant recovery mode is enabled to operate preferentially, and the refrigerant recovery effect is ensured.
In some embodiments of the present application, a user regulates the operating state of an air conditioner through remote control software, which is used to send an indication signal to a controller. When the controller receives a signal of refrigerant concentration leakage or judges that the refrigerant leakage exists in a room, the controller controls the air conditioner to enter a refrigerant recovery mode, the controller receives an indication signal from remote control software, and the controller controls the air conditioner to only execute the indication signal for closing the air conditioner and opening the air conditioner, which is sent by the remote control software.
The remote control software comprises a mobile phone APP and/or Bluetooth for regulating and controlling the air conditioner, a user can also remotely regulate and control the air conditioner through the Bluetooth and/or the App, when the air conditioner runs in the refrigerant recovery mode, the air conditioner only executes the on and off signals sent by the user through the Bluetooth and/or the APP, the air conditioner does not execute the signals sent by the user through the Bluetooth and/or the App except the on and off signals after receiving the signals, the refrigerant recovery mode is prevented from being interfered due to the operation of the user on the Bluetooth and/or the App, and each part of the air conditioner preferentially executes the instructions of the refrigerant recovery mode sent by the controller when the refrigerant recovery mode runs, so that the refrigerant can be recovered from the air conditioner indoor unit 8 quickly and thoroughly.
In some embodiments of the application, when a user remotely regulates and controls the air conditioner through remote control software, the remote control software displays that the air conditioner is in a refrigerant leakage state, reminds people in an indoor space to carefully start other electrified equipment, and reduces the probability of refrigerant explosion.
In some embodiments of the present application, when the concentration of the refrigerant is not less than a preset first concentration threshold, the remote control software prompts the user that the air conditioner is in a refrigerant leakage state, and prompts personnel in the indoor space to carefully start the charging equipment.
In some embodiments of the present application, the air conditioning indoor unit 8 includes the front panel, and the front panel includes the refrigerant alarm lamp, and when the refrigerant was revealed, the refrigerant alarm lamp was lighted, reminds indoor user refrigerant to be in the state of revealing, reduces the opening of electrified equipment, reduces the probability of refrigerant explosion.
In some embodiments of the present application, when the air conditioner is in the refrigerant recovery mode, and the user uses the remote controller to remotely control the air conditioner, the air conditioner indoor unit 8 sends a special sound signal to remind the user that the air conditioner is in the refrigerant recovery mode, and the air conditioner cannot adjust the operation mode according to the operation of the user. In some embodiments, the air conditioner in the refrigerant recovery mode sends out two beeps after receiving the signal sent by the remote controller each time, and the air conditioner not in the refrigerant mode sends out one beep after receiving the signal sent by the remote controller each time, so that a user can distinguish whether the air conditioner is in the refrigerant recovery mode or not, and the use experience of the user is improved.
In some embodiments of the present application, the air conditioner further comprises a first electromagnetic valve, the first electromagnetic valve is arranged on a pipeline between the electronic expansion valve and the indoor heat exchanger, and the first electromagnetic valve is connected with the controller.
When the concentration of the refrigerant is not less than a preset first concentration threshold, the controller adjusts the first electromagnetic valve to be in a closed state.
In some embodiments of the present application, the air conditioner further includes a damper and a damper, and the damper are respectively connected to the controller.
When the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller controls the air door and/or the air valve to be in a maximum air outlet state.
In some embodiments of the present application, the air conditioner further comprises an indoor fan; the indoor fan is connected with the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold, the controller controls the indoor fan to be started, so that the refrigerant in the indoor heat exchanger is quickly evaporated and then enters the compressor.
Referring to fig. 5, according to the present application, the air conditioner further includes a fresh air system including a fresh air blower that provides a driving force for introducing outdoor fresh air into a room. The air conditioner also comprises an air door and an air valve which can control the air outlet state, and when the air door and the air valve reach the maximum air outlet state, the fresh air has small resistance and large air quantity, and can be quickly introduced into a room.
The air conditioner further comprises an indoor fan, the indoor fan is used for sending air-conditioning air into the room, and when the rotation speed of the indoor fan is increased, the heat exchange efficiency of the indoor heat exchanger 1 can be increased.
The fresh air system, the fresh air fan, the air valve, the air door and the indoor fan are respectively connected with the controller.
In the running process of the air conditioner, when the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller adjusts the first electromagnetic valve 51 to be in a closed state, so that the refrigerant of the air conditioner outdoor unit cannot flow to the indoor heat exchanger 1 through a pipeline where the first electromagnetic valve 51 is located, the refrigerant source of the indoor heat exchanger 1 is cut off, and the controller simultaneously controls the air conditioner to run a refrigerant dilution mode.
When the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller controls the fresh air system to be started, the maximum rotating speed of the fresh air fan is n, the controller controls the fresh air fan to operate at a rotating speed not lower than the maximum rotating speed n, the maximum rotating speed of the indoor fan is m, and the controller controls the indoor fan to operate at a rotating speed not lower than the maximum rotating speed m.
In some embodiments of the present application, the maximum rotation speed of the fresh air machine is n, and the controller controls the fresh air machine to rotate at the rotation speed of 2n, so that the outdoor fresh air is rapidly introduced into the indoor space, and the outdoor fresh air dilutes the refrigerant in the indoor space.
The air conditioner also comprises an air door and an air valve which can control the air outlet state; the air door and the air valve are respectively connected with the controller.
When the concentration of the refrigerant is not less than a preset first concentration threshold value, the air conditioner operates a refrigerant dilution mode, and the controller controls the air door and/or the air valve to be in a maximum air outlet state, so that fresh air can be fed into a room with maximum air quantity, the dilution speed of the indoor refrigerant is increased, and the concentration of the refrigerant is quickly reduced to be below a safe concentration.
When the concentration of the refrigerant is not less than a preset first concentration threshold value, the air conditioner operates a refrigerant dilution mode, and the controller controls the indoor fan to be started, so that the refrigerant in the indoor heat exchanger 1 is quickly evaporated and then enters the compressor 3, and the refrigerant recovery efficiency is improved. The maximum rotating speed of the indoor fan is m, and the controller controls the indoor fan to rotate at the rotating speed of 1.5 m.
The air conditioner further comprises a first electromagnetic valve, and the first electromagnetic valve is arranged on a pipeline between the electronic expansion valve and the indoor heat exchanger; the first electromagnetic valve is connected with the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold value, the controller adjusts the first electromagnetic valve to be in a closed state.
The concentration sensor detects the concentration of the indoor refrigerant, when the real-time concentration of the refrigerant is not more than the preset refrigerant recovery concentration and the preset time tw is maintained, the controller controls the rotation speed of the indoor fan and the rotation speed of the fresh air fan to be adjusted to 0, the rotation speed of the fresh air fan is reduced to 0 at the speed reduction rate v4, and the rotation speed of the indoor fan is reduced to 0 at the speed reduction rate v 6.
Specifically, the preset time tw can be selected according to an experimental result or a theoretical analysis result, in some embodiments, the preset time tw is 10 minutes, so that the concentration of the indoor refrigerant is ensured to be at the lower limit value of the refrigerant recovery concentration for a longer time, the refrigerant is diluted, the problem that the abrasion is reduced and the service life is reduced due to the fact that the fresh air fan and the indoor air fan maintain high rotation speed for a longer time is avoided.
The new fan is reduced to the rotating speed of 0 at the speed reduction rate v4, so that the rotating speed of the new fan is gradually reduced, the damage to parts of the new fan caused by abrupt change of the rotating speed due to direct shutdown of the new fan can be avoided, and the service life of the new fan is prolonged.
The indoor fan is reduced to the rotating speed 0 at the speed reduction rate v6, so that the rotating speed of the indoor fan is gradually reduced, the damage to parts of the indoor fan caused by abrupt change of the rotating speed due to direct shutdown of the indoor fan can be avoided, and the service life of the indoor fan is prolonged.
In some embodiments, the deceleration rate v4 and the deceleration rate v6 are the same.
The concentration sensor detects the real-time concentration of the refrigerant and uploads the real-time concentration to the controller. In some embodiments, the control unit of the concentration sensor presets the refrigerant recovery concentration, and when the control unit of the concentration sensor judges that the real-time concentration of the refrigerant reaches the lower limit value of the preset refrigerant recovery concentration, a signal is transmitted to the controller, and the controller controls the fresh air fan to slow down, so that the preset program quantity of the controller is reduced.
In other embodiments, the controller presets the refrigerant recovery concentration, and when the controller judges that the refrigerant concentration of the received refrigerant sensor reaches the lower limit value of the preset refrigerant recovery concentration, the controller controls the fresh air fan to reduce the speed, and at the moment, the control unit of the concentration sensor does not presets the refrigerant recovery concentration, so that the concentration sensor with a simple structure and low cost can be selected, and the cost is saved.
Referring to fig. 6 and 7, according to the present application, an air conditioner includes an electronic control system located at an upper portion of an indoor space. The air conditioner indoor unit 8 comprises an air outlet 81, a first air deflector 82 and a second air deflector 83, and the first air deflector 82 and the second air deflector 83 are respectively connected to the air outlet 81. The first air guide plate 82 extends in the lateral direction, and the first air guide plate 82 can adjust the air outlet angle of the air-conditioned air blown out from the air outlet 81 by rotating to change the position of the air-conditioned air blown out in the up-down direction. The second air deflector 83 extends in the up-down direction or in a direction of a straight line forming an acute angle with the vertical direction. The second air guide plate 83 can adjust the angle of the air-conditioned air blown out from the air outlet 81 by rotating to change the position at which the air-conditioned air is blown out in the left and right directions. The air conditioner achieves a change in the blowing angle and position of the conditioned air by the rotation of the first air guide plate 82 and the second air guide plate 83.
In some embodiments, the first air deflectors 82 have at least two, and the plurality of first air deflectors 82 are arranged at intervals at the air outlet 81. The second air deflectors 83 are at least two, and a plurality of second air deflectors which are arranged at intervals are arranged between the uppermost first air deflector and the lowermost first air deflector.
The controller presets the blowing angle beta of the first air deflector 82, and when the rotation angle of the first air deflector 82 is adjusted to the angle beta, the air-conditioning wind energy blown out from the air outlet 81 is blown directly to the ground, so as to reduce the probability of blowing the air-conditioning wind to the electric control system.
When the indoor fan is turned on, the controller adjusts the rotation angle of the first air deflector 82 to the blowing angle β, and the air conditioner air is blown directly to the ground, and because the air conditioner is operated in the refrigerant dilution mode and is also operated in the refrigerant recovery mode, the refrigerant in the indoor heat exchanger 1 of the air conditioner indoor unit 8 is still in a leakage state, and the leaked refrigerant is carried when the indoor air flows through the indoor heat exchanger 1 and is blown into the room by the indoor fan, so that the air conditioner air blown out from the air outlet 81 carries the refrigerant. The controller controls the first air deflector 82 to blow the air conditioner to the ground, so that the air conditioner wind carrying the refrigerant is blown to the ground, the contact probability of the air conditioner wind and an electric control system of the air conditioner, which is positioned at the upper part of the indoor space, is reduced, and the risk of explosion caused by the contact of the refrigerant and the electric control system is reduced.
Because the refrigerant recovery mode is performed under the refrigeration working condition, the temperature of the air-conditioning air is lower, when the air-conditioning air blown out from the air conditioner is guided to a position close to the ground through the first air deflector 82, the blown air-conditioning air containing leaked refrigerant can be gathered at the lower side of the indoor space due to the higher density of the air-conditioning air with lower temperature, and the contact probability of the refrigerant and an electric control system positioned at the upper part of the indoor space is reduced.
The controller presets the swing frequency v5 of the second air deflector 83, and when the second air deflector 83 swings at the swing frequency v5, wind energy blown out from the air outlet 81 is rapidly and uniformly distributed in the transverse space.
When the indoor fan is started, the controller adjusts the swing frequency of the second air deflector 83 to swing at the swing frequency v5, and at the moment, the rotation angle of the first air deflector 82 meets the blowing angle beta, so that air-conditioning wind is guided to the ground by the first air deflector 82 and is rapidly distributed to the lower part of the indoor space by the second air deflector 83, refrigerants in the air-conditioning wind are uniformly spread to the lower part of the indoor space along with the air-conditioning wind, the condition that the refrigerants gather at a certain position of the indoor space is reduced, the condition that the air-conditioning wind blows to the same position due to the fixed position of the air-conditioning is reduced, the condition that the refrigerants gather at the fixed position of the certain indoor space is not easy to disperse is reduced, the refrigerants can be rapidly dispersed to the lower part of the indoor space, and the contact probability of the refrigerants carried by the air-conditioning wind and an electric control system is reduced.
In some embodiments of the present application, when the second air deflection 83 swings the maximum limit angle to the left and maintains the angular supply for time t1, then swings the maximum limit angle to the right and maintains the angular supply for time t2.
The selection of the time t1 and the time t2 is based on the structural property of the air conditioner, and can be obtained according to experimental results.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily appreciate variations or alternatives within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (7)

1. An air conditioner, comprising:
the indoor unit of the air conditioner comprises an indoor heat exchanger, an air outlet, a first air deflector and a second air deflector, wherein the first air deflector and the second air deflector are arranged at the air outlet, the first air deflector transversely extends, and the second air deflector vertically extends
An outdoor heat exchanger;
a compressor for compressing the gaseous refrigerant evaporated by the heat absorption;
an electronic expansion valve;
the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through the pipeline;
the indoor fan is arranged in the air conditioner indoor unit;
the fresh air blower is used for introducing fresh air into the room;
an electric control system located at an upper portion of the indoor space;
the controller is connected with the compressor, the indoor fan, the fresh air fan, the first air deflector and the second air deflector;
the concentration sensor is connected with the controller, and is used for measuring the concentration of the refrigerant in the room and uploading the concentration to the controller;
when the concentration of the refrigerant is not less than a preset first concentration threshold, the indoor heat exchanger is an evaporator, and the controller drives the compressor to operate at a preset target frequency F1;
the controller controls the first air deflector to rotate to a preset blowing angle beta and controls the second air deflector to swing at a preset swing frequency v5 so that the air-conditioning air is uniformly blown out at the lower part of the indoor space; the second air deflector swings leftwards by a maximum limit angle, and air is supplied at the angle within a time t1, and then swings rightwards by the maximum limit angle, and the air is supplied at the angle within a time t 2;
the maximum rotating speed of the indoor fan is m, and the controller controls the indoor fan to rotate at the rotating speed of 1.5 m;
the maximum rotating speed of the fresh air fan is n, and the controller controls the fresh air fan to rotate at the rotating speed of 2 n;
when the real-time concentration of the refrigerant is not more than the preset refrigerant recovery concentration and the preset time tw is maintained, the controller controls the rotation speed of the indoor fan and the rotation speed of the fresh air fan to be adjusted to 0, the rotation speed of the fresh air fan is reduced to 0 at the speed reduction rate v4, and the rotation speed of the indoor fan is reduced to 0 at the speed reduction rate v 6.
2. The air conditioner of claim 1, wherein the first air guide plate has at least two, a plurality of the first air guide plates are arranged at intervals at the air outlet, and the first air guide plate can adjust an air outlet angle of the air-conditioned air blown out from the air outlet by rotating to change a position of the air-conditioned air blown out in an up-down direction.
3. The air conditioner according to claim 1 or 2, wherein the second air guide plate has at least two, a plurality of second air guide plates arranged at intervals are provided between the uppermost first air guide plate and the lowermost first air guide plate, and the second air guide plate can adjust the angle of the air-conditioned air blown out from the air outlet by rotating to change the position of the air-conditioned air blown out in the left and right directions of the indoor space.
4. The air conditioner according to claim 1, further comprising a first solenoid valve and a first stop valve, wherein the first solenoid valve is disposed on a pipeline between the electronic expansion valve and the indoor heat exchanger, the first stop valve is disposed on a pipeline between the first solenoid valve and the indoor heat exchanger, the first solenoid valve is used for regulating and controlling a flow rate of a flowing medium in a pipeline where the first solenoid valve is located, and the first stop valve is used for cutting off and throttling the flowing medium in the pipeline where the first stop valve is located.
5. The air conditioner according to claim 1 or 4, further comprising a four-way valve through which the indoor heat exchanger and the outdoor heat exchanger are connected, respectively, and the four-way valve comprising a first valve port, a second valve port, a third valve port, and a fourth valve port, and the compressor comprising an intake port connected to the first valve port and an exhaust port connected to the third valve port;
when the indoor heat exchanger is used as an evaporator, the first valve port is connected with the second valve port, and the third valve port is connected with the fourth valve port;
when the indoor heat exchanger is used as a condenser, the first valve port is connected with the fourth valve port, and the second valve port is connected with the third valve port.
6. The air conditioner of claim 5, further comprising a second solenoid valve and a second stop valve, wherein the second solenoid valve is arranged on a pipeline between the four-way valve and the indoor heat exchanger, the second stop valve is arranged on a pipeline between the second solenoid valve and the indoor heat exchanger, the second solenoid valve is used for regulating and controlling the flow of a flowing medium in a pipeline where the second solenoid valve is arranged, and the second stop valve is used for cutting off and throttling the flowing medium in the pipeline where the second stop valve is arranged.
7. The air conditioner of claim 1, further comprising an indoor fan that is turned on and operated at a rotation speed not less than a maximum rotation speed m when a concentration of the refrigerant is not less than a preset first concentration threshold value, so that a large amount of air-conditioning wind is blown into the room to dilute the concentration of the refrigerant in the room.
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