CN115164348A - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
CN115164348A
CN115164348A CN202210761284.0A CN202210761284A CN115164348A CN 115164348 A CN115164348 A CN 115164348A CN 202210761284 A CN202210761284 A CN 202210761284A CN 115164348 A CN115164348 A CN 115164348A
Authority
CN
China
Prior art keywords
valve
refrigerant
air
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.)
Granted
Application number
CN202210761284.0A
Other languages
Chinese (zh)
Other versions
CN115164348B (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 CN202210761284.0A priority Critical patent/CN115164348B/en
Publication of CN115164348A publication Critical patent/CN115164348A/en
Priority to PCT/CN2023/085940 priority patent/WO2024001376A1/en
Application granted granted Critical
Publication of CN115164348B publication Critical patent/CN115164348B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F24F11/61—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)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an air conditioner. The air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, an electronic expansion valve and a pipeline, wherein the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through the pipeline; the concentration sensor is connected with the controller and used for detecting the concentration of the indoor refrigerant and uploading the concentration to the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold value, 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. This air conditioner has realized the dilution to the refrigerant of interior space through opening new fan when the refrigerant is revealed, makes refrigerant concentration reduce fast to reduce the probability of refrigerant explosion.

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 requirements of users on air conditioners are also continuously improved. In the prior art, the air conditioner with the R290 refrigerant is widely used, and the R290 air conditioner has the characteristic of environmental protection and can avoid polluting the environment. Since the R290 refrigerant itself has flammability, there is a certain risk of explosion when the R290 refrigerant leaks. 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 based on gb.4706[1] 32-2012, and the special requirements of the safety heat pump, the air conditioner and the dehumidifier of the household and similar appliances are mainly as follows: prevent on the one hand that the air conditioner from dismantling in indoor environment, avoid because the people makes the refrigerant reveal in indoor environment for dismantling, on the other hand on the air conditioner or near the mounted position paste warning label, remind the indoor personnel to pay close attention to the harm that the refrigerant revealed, these two aspects are that the angle that prevents the refrigerant in the past from revealing is set out.
The two methods of anti-disassembly design and pasting of the warning label through the air conditioner have certain limitations, and for a complex installation environment, R290 in the operation process of the air conditioner cannot be prevented from being leaked through an early-stage leakage prevention method.
The disassembly prevention design of the air conditioner can prevent the air conditioner from being disassembled for the second time indoors, the leakage of the R290 caused by the fact that the air conditioner is spliced again after being disassembled and is not tightly attached is prevented, but if the R290 leaks in the first installation, the R290 can not be effectively prevented by the measures. The warning label can only remind people who pay attention to the content of the warning label, and the effect on people who do not pay attention to the content of the warning label is very limited. Therefore, the effectiveness of the existing measures for preventing the leakage of the R290 has certain limitations, and the explosion risk caused by the leakage of the R290 cannot be effectively reduced.
Disclosure of Invention
The present invention solves at least one of the technical problems of the related art to some extent.
Therefore, the air conditioner aims at providing the air conditioner, the fresh air fan is started when the refrigerant is leaked, the indoor space refrigerant is diluted, the refrigerant concentration is quickly reduced, and the explosion probability of the refrigerant is reduced.
An air conditioner according to the present application includes:
an indoor heat exchanger;
an outdoor heat exchanger;
a compressor;
an electronic expansion valve;
the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through pipelines;
the fresh air machine is used for providing driving force required by fresh air flowing into the room;
an indoor fan for providing a driving force for indoor wind flow;
the controller is connected with the compressor, the indoor fan, the fresh air fan and the electronic expansion valve;
the concentration sensor is connected with the controller and used for detecting the concentration of the indoor refrigerant and uploading the concentration to the controller;
when the concentration of the refrigerant is not less than a preset first concentration threshold value, 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 air conditioner of the present application, the air conditioner further includes a damper and an air valve capable of controlling an 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 controller controls the air door and/or the air valve to be in a maximum air outlet state.
In some embodiments of the air conditioner of the present application, the controller controls the fresh air machine to rotate at a rotation speed of 2 n.
In some embodiments of the air conditioner of the present application, the controller controls the indoor fan to rotate at a rotation speed of 1.5 m.
In some embodiments of the air conditioner of the present application, the air conditioner further comprises a first solenoid valve disposed on a pipe 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.
In some embodiments of the air conditioner of the present application, the concentration sensor detects a concentration of an indoor refrigerant, and the controller controls the rotation speeds of the indoor fan and the new fan to be adjusted to 0 when the real-time concentration of the refrigerant is not greater than a preset refrigerant recovery concentration and is maintained for a preset time tw.
In some embodiments of the air conditioner of the present application, in the process of controlling the rotation speeds of the indoor fan and the new fan to be adjusted to 0 by the controller, the new fan is reduced to the rotation speed of 0 at the speed reduction rate v4, and the indoor fan is reduced to the rotation speed of 0 at the speed reduction rate v 6.
In some embodiments of the air conditioner of the present application, the air conditioner further includes a first shutoff valve, the first solenoid valve is disposed on a pipeline between the electronic expansion valve and the indoor heat exchanger, the first shutoff valve is disposed on a pipeline between the first solenoid valve and the indoor heat exchanger, the first solenoid valve is configured to regulate a flow rate of a flowing medium in the pipeline where the first solenoid valve is located, and the first shutoff valve is configured to shut off and throttle the flowing medium in the pipeline where the first shutoff valve is located.
In some embodiments of the air conditioner of the present application, the air conditioner further includes a four-way valve, the indoor heat exchanger and the outdoor heat exchanger are respectively connected through the four-way valve and a compressor, the four-way valve includes a first valve port, a second valve port, a third valve port and a fourth valve port, and the compressor includes a suction port connected to the first valve port and a discharge 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.
In some embodiments of the air conditioner of the present application, the air conditioner further includes a second solenoid valve and a second stop valve, the second solenoid valve is disposed on a pipeline between the four-way valve and the indoor heat exchanger, the second stop valve is disposed on a pipeline between the second solenoid valve and the indoor heat exchanger, the second solenoid valve is configured to regulate and control a flow rate of a flowing medium in the pipeline where the second solenoid valve is located, and the second stop valve is configured to cut off and throttle the flowing medium in the pipeline where the second solenoid valve is located.
The air conditioner of the application has at least the following positive effects:
the invention provides an air conditioner. The air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, an electronic expansion valve and a pipeline, wherein the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through the pipeline; the concentration sensor is connected with the controller and used for detecting the concentration of the indoor refrigerant and uploading the concentration to the controller; when the concentration of the refrigerant is not less than a preset first concentration threshold value, 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. This air conditioner has realized the dilution to the refrigerant of interior space through opening new fan when the refrigerant is revealed, makes refrigerant concentration reduce fast to reduce the probability of refrigerant explosion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a system diagram illustrating a cooling condition of an air conditioner according to an embodiment of the present application;
FIG. 2 is a system diagram illustrating a heating mode of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a control flow diagram of an indication signal of a remote controller for an operation refrigerant recovery mode of an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a control flow diagram of an indication signal of remote control software for operating a refrigerant recovery mode of an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic control flow chart of an operation refrigerant dilution mode of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic flowchart of a control method for controlling the first air deflector and the second air deflector in a refrigerant dilution mode of the air conditioner according to an embodiment of the present disclosure;
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. an air conditioner; 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 solenoid valve; 52. a second solenoid valve; 61. a first shut-off valve; 62. a second stop 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-conditioning indoor unit; 81. an air outlet; 82. a first air deflector; 83. a second air deflector.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, 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 is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention in specific cases.
The air conditioner 100 includes a compressor 3, a condenser, an expansion valve, and an evaporator, and performs a cooling cycle or a heating cycle through the compressor 3, the condenser, the expansion valve, and the evaporator. The refrigeration 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 adjusted.
The compressor 3 compresses a refrigerant gas into a high-temperature and high-pressure state, discharges the compressed refrigerant gas, and the discharged refrigerant gas flows into a condenser. The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into a liquid refrigerant, and the heat is released to the surrounding environment through the condensation process.
The liquid refrigerant flowing out of the condenser enters an expansion valve, which 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, the liquid refrigerant absorbs heat when flowing through the evaporator and is evaporated into low-temperature and low-pressure refrigerant gas, and the refrigerant gas in the low-temperature and low-pressure state returns to the compressor 3. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
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 function 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 for a heating mode, and when the indoor heat exchanger 1 is used as an evaporator, the air conditioner is used as a cooler for 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 condensation process into a low-pressure liquid refrigerant.
The air conditioner also 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 a flowing medium in the pipeline, 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 medium of the pipeline where the first stop valve 61 is arranged.
The air conditioner further comprises a four-way valve 7, the indoor heat exchanger 1 and the outdoor heat exchanger 2 are connected with the compressor 3 through the four-way valve 7, 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 second electromagnetic valve is 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 second stop valve 62 is 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 a suction port 31 and an exhaust port 32, and the refrigerant that has absorbed heat and evaporated enters the compressor 3 through the suction port 31, and the compressor 3 compresses the gaseous refrigerant into a high-temperature and high-pressure state and 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 port of the four-way valve, for measuring the exhaust 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 the suction port 31 of the compressor 3 is fixedly connected with the first valve port 71, and the exhaust port 32 of the compressor 3 is fixedly connected with the third valve port 73. When the air conditioner is in a cooling 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 port 71 is connected to the fourth port 74, and the second port 72 is connected to the third port 73.
The air conditioner further comprises a concentration sensor which can detect the concentration of the flammable refrigerant and is arranged at a position where the refrigerant of the indoor unit 8 of the air conditioner 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 another refrigerant having combustibility.
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 an upper limit value of the first concentration threshold, the control unit of the concentration sensor judges that a refrigerant leakage condition exists in the room, the control unit of the concentration sensor sends a signal to the controller, and the controller receives the signal of the refrigerant leakage.
In other embodiments, the control unit of the concentration sensor does not preset the first concentration threshold, the controller preset 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 determines whether the refrigerant leakage condition exists indoors. When the concentration of the refrigerant reaches a first concentration threshold value, the controller judges that the refrigerant leaks in the room.
In some embodiments, the preset first concentration threshold is not greater than a refrigerant concentration value of an indoor environment which does not explode, the refrigerant concentration value of the indoor environment which does not explode can be obtained through an experimental result or obtained by inquiring the prior art, and the preset first concentration threshold is not greater than the refrigerant concentration value of the indoor environment which does not explode, so that the air conditioner can detect that an alarm is given 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 risk caused by refrigerant leakage is 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 communicates with the electronic expansion valve 4, and the fourth communication port 22 communicates with the four-way valve 7.
In some embodiments of the present application, the air conditioner includes a cooling condition and a heating condition. Under the refrigeration working condition, the indoor heat exchanger 1 is an evaporator, the outdoor heat exchanger 2 is a condenser, and at the moment, the compressor 3 compresses the gaseous refrigerant into a high-temperature high-pressure state and discharges the compressed refrigerant gas from the 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 a condensation process, the liquid refrigerant flows out of 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 passes 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). When the refrigerant flows through the indoor heat exchanger 1 (evaporator), the refrigerant absorbs heat and becomes refrigerant gas with low temperature and low pressure, 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 solenoid valve 52 and the four-way valve 7 and enters the air suction port 31 of the compressor 3, the compressor 3 recompresses the refrigerant gas with low temperature and low pressure to change the refrigerant gas into refrigerant gas with high temperature and high pressure, the refrigerant gas with high temperature and high pressure flows out from the exhaust port 32 of the compressor 3, then enters the fourth communication port 22 of the condenser, and then enters the condensation process again. In this process, heat absorption of the indoor heat exchanger 1 to the indoor environment and heat release of the outdoor heat exchanger 2 to the outdoor environment are realized, and by consuming the electric power supplied to the compressor 3, cold energy supply to the indoor environment is realized, and indoor temperature reduction is realized.
When the heating working condition is met, the indoor heat exchanger 1 is an evaporator, the outdoor heat exchanger 2 is a condenser, and at the moment, the compressor 3 compresses a gaseous refrigerant into a high-temperature high-pressure state and discharges the compressed refrigerant gas from an outlet of the compressor 3. The refrigerant gas passes through the four-way valve 7, sequentially passes through the second solenoid valve 52 and the second shutoff 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 raised, and the purpose of heating is achieved. The refrigerant gas is changed into a liquid refrigerant through a 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) to absorb heat of the outdoor environment and is evaporated into low-temperature and low-pressure refrigerant gas, the refrigerant gas flows out of the outdoor heat exchanger 2 (evaporator) and enters the air suction port 31 of the compressor 3 through the four-way valve 7, the compressor 3 compresses the low-temperature and low-pressure refrigerant gas into the high-temperature and high-pressure refrigerant gas again, the high-temperature and high-pressure refrigerant gas is condensed in the indoor heat exchanger 1 again, and the process is repeated, so that the outdoor heat is transferred to the indoor environment through the 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 that the concentration of the refrigerant sent by the concentration sensor leaks, or when the controller judges that the concentration of the refrigerant is not less than a preset first concentration threshold value, 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 a 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 sending an indication signal to the controller, and a user may use the remote controller to control the turning on and off of the air conditioner, and the change of various parameters.
In the air conditioner operation process of this application, when the controller received the signal that refrigerant concentration revealed or the controller judges that there is the refrigerant condition of revealing indoor, control air conditioner entering refrigerant recovery mode, indoor heat exchanger is the evaporimeter, the operation of controller drive compressor with preset target frequency F1, the controller receives the total pilot signal that comes from the remote controller, but the pilot signal of closing the air conditioner and opening the air conditioner that the remote controller sent is only carried out to controller control air conditioner.
Specifically, when the controller receives a refrigerant leakage signal or the controller judges that the refrigerant leaks according to a signal transmitted by the concentration sensor, the controller only allows the air conditioner to execute the opening and closing signal sent by the remote controller, and the controller does not execute the signals sent by the remote controller except the opening and closing signal after receiving the signal, so that the refrigerant recovery mode is prevented from being interfered due to the operation of a user on the remote controller, the refrigerant recovery mode is preferentially operated, and the refrigerant recovery effect is ensured.
In some embodiments of the present application, a user regulates and controls the operation state of the air conditioner through remote control software for sending an indication signal to the controller. When the controller receives a refrigerant concentration leakage signal or the controller judges that the refrigerant leakage exists indoors, the air conditioner is controlled 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 which is sent by the remote control software and used for closing and opening the air conditioner.
The remote control software comprises a mobile phone APP and/or Bluetooth used 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 a refrigerant recovery mode, the air conditioner only executes opening and closing 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 opening and closing signals after receiving, the problem that the refrigerant recovery mode is interfered due to the operation of the user on the Bluetooth and/or the App is avoided, all parts of the air conditioner preferentially execute a refrigerant recovery mode instruction sent by the controller when the refrigerant recovery mode runs is solved, and the refrigerant can be rapidly and thoroughly recovered from the indoor unit 8 of the air conditioner.
In some embodiments of the application, when the user comes remote control air conditioner through remote control software, remote control software shows that the air conditioner is in the refrigerant and reveals the state, reminds the personnel of interior space to carefully open other electrified equipment, reduces the probability of refrigerant explosion.
In some embodiments of the application, when the concentration of the refrigerant is not less than the preset first concentration threshold, the remote control software prompts a user that the air conditioner is in a refrigerant leakage state and reminds personnel in the indoor space to carefully start the electrified equipment.
In some embodiments of the present application, the indoor unit 8 of the air conditioner includes a front panel, and the front panel includes a refrigerant alarm lamp, and when the refrigerant leaks, the refrigerant alarm lamp lights up to remind the indoor user that the refrigerant is in a leaking state, so as to reduce the opening of the electrical equipment and reduce 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 indoor unit 8 of the air conditioner 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 user's operation. In some embodiments, the air conditioner in the refrigerant recovery mode sends two clicks every time the air conditioner receives a signal sent by the remote controller, and the air conditioner not in the refrigerant mode sends one click every time the air conditioner receives a signal sent by the remote controller, so that a user can distinguish whether the air conditioner is in the refrigerant recovery mode, and the use experience of the user is improved.
In some embodiments of the present application, the air conditioner further includes a first solenoid valve disposed on a pipe between the electronic expansion valve and the indoor heat exchanger, the first solenoid valve being connected to 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.
In some embodiments of the present application, the air conditioner further comprises a damper and an air valve, and the damper 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 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 value, the controller controls the indoor fan to be started, so that the refrigerant in the indoor heat exchanger is rapidly 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 the room. The air conditioner also comprises an air door and an air valve which can control the air-out state, when the air door and the air valve reach the maximum air-out state, the resistance of the fresh air is small, the air quantity is large, and the fresh air can be quickly introduced into the room.
The air conditioner also comprises an indoor fan, the indoor fan is used for sending air conditioning air into a room, and when the rotating speed of the indoor fan is increased, the heat exchange efficiency of the indoor heat exchanger 1 can be improved.
The fresh air system, the fresh air machine, the air valve, the air door and the indoor fan are respectively connected with the controller.
In the air conditioner operation process of this application, when the concentration of refrigerant is not less than predetermined first concentration threshold value, the first solenoid valve 51 of controller adjustment to the closed condition to make air condensing units's refrigerant can not flow to indoor heat exchanger 1 through the pipeline at first solenoid valve 51 place, cut off indoor heat exchanger 1's refrigerant source, the controller controls air conditioner operation refrigerant dilution mode simultaneously at this time.
When the concentration of the refrigerant is not less than a preset first concentration threshold value and the air conditioner operates in a refrigerant dilution mode, 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 blower is n, and the controller controls the fresh air blower to rotate at the rotation speed of 2n, so that the outdoor fresh air is rapidly introduced into the indoor space, and the indoor refrigerant is diluted by the outdoor fresh air.
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 in 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 sent into a room with the maximum air quantity, the dilution speed of the indoor refrigerant is increased, and the concentration of the refrigerant is quickly reduced to be below the safe concentration.
When the concentration of the refrigerant is not less than the preset first concentration threshold value, the air conditioner operates in a refrigerant dilution mode, the controller controls the indoor fan to be started, the refrigerant in the indoor heat exchanger 1 is enabled to quickly evaporate 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 also 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 greater than the preset refrigerant recovery concentration and the preset time tw is maintained, the controller controls the rotating speeds of the indoor fan and the new fan to be adjusted to 0, the new fan is reduced to the rotating speed of 0 at the speed reduction rate v4, and the indoor fan is reduced to the rotating speed of 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, and in some embodiments, the preset time tw is 10 minutes, so that it can be ensured that the concentration of the indoor refrigerant is at a lower limit value of the refrigerant recovery concentration for a long time, the refrigerant is diluted, and the problems that the preset time tw is too long, the abrasion caused by the fact that the fresh air fan and the indoor fan maintain a high rotating speed for too long time, and the service life is reduced are solved.
The rotating speed of the fresh air machine is reduced to 0 by the speed reduction rate v4, so that the rotating speed of the fresh air machine is gradually reduced, the damage to parts of the fresh air machine caused by the sudden change of the rotating speed due to the direct halt of the fresh air machine can be avoided, and the service life of the fresh air machine is prolonged.
The indoor fan is reduced to the rotating speed of 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 the sudden change of the rotating speed due to the direct halt 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 a refrigerant recovery concentration, when the control unit of the concentration sensor judges that the real-time concentration of the refrigerant reaches a lower limit value of the preset refrigerant recovery concentration, a signal is transmitted to the controller, and the controller controls the speed of the fresh air fan to be reduced, so that the preset program amount of the controller is reduced.
In other embodiments, the controller presets the refrigerant recovery concentration, and when the controller judges that the refrigerant concentration received by the refrigerant sensor reaches the lower limit value of the preset refrigerant recovery concentration, the fresh air fan is controlled to decelerate, and at the moment, the control unit of the concentration sensor does not preset 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 electric control system located at an upper portion of an indoor space. The air conditioning indoor unit 8 includes an air outlet 81, a first air deflector 82, and a second air deflector 83, where the first air deflector 82 and the second air deflector 83 are respectively connected to the air outlet 81. The first air deflector 82 extends in the lateral direction, and the first air deflector 82 can adjust the air-out angle of the air-conditioned air blown out from the air outlet 81 by rotation to change the position of the air-conditioned air blown out in the up-and-down direction. The second air guiding plate 83 extends in the up and down direction or in the direction of a straight line forming an acute angle with the vertical direction. The second air deflector 83 can adjust the angle of the air-conditioned air blown out from the outlet port 81 by rotating to change the position where the air-conditioned air is blown out in the left and right directions. The air conditioner realizes the change of the blow-out angle and position of the air-conditioned air by the rotation of the first air deflector 82 and the second air deflector 83.
In some embodiments, there are at least two first air deflectors 82, and the plurality of first air deflectors 82 are arranged at the air outlet 81 at intervals. The number of the second air guiding plates 83 is at least two, and a plurality of second air guiding plates arranged at intervals are arranged between the uppermost first air guiding plate and the lowermost first air guiding plate.
The controller presets the blowing angle β of the first air deflector 82, and when the rotation angle of the first air deflector 82 is adjusted to the angle β, the air conditioning wind blown out from the air outlet 81 is directly blown to the ground, so as to reduce the probability that the air conditioning wind blows 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 blow-out angle β, the air-conditioning air is directly blown to the ground, and because the air-conditioning air runs in the refrigerant dilution mode and runs in the refrigerant recovery mode, the refrigerant of the indoor heat exchanger 1 of the indoor unit 8 of the air-conditioning 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-conditioning air blown out from the air outlet 81 carries the refrigerant. The controller controls the first air deflector 82 to blow the air conditioner directly to the ground, so that the air conditioner air carrying the refrigerant is blown directly to the ground, the contact probability of the air conditioner air 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 carried out under the refrigeration working condition, the temperature of the air-conditioning air is low, 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 refrigerants can be gathered at the lower side of the indoor space due to the high density of the air-conditioning air with low temperature, and the contact probability of the refrigerants and an electric control system positioned at the upper part of the indoor space is reduced.
The controller presets the oscillating frequency v5 of the second air deflector 83, and when the second air deflector 83 oscillates at the oscillating frequency v5, the wind energy blown out from the air outlet 81 is quickly 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 blow-out angle beta, so that the air-conditioned air is guided to the ground by the first air deflector 82 and is quickly distributed to the lower part of the indoor space by the second air deflector 83, the refrigerants in the air-conditioned air are uniformly diffused to the lower part of the indoor space along with the air-conditioned air, the condition that the refrigerants are gathered at a certain position of the indoor space is reduced, the condition that the air-conditioned air is blown to the same position due to the fixed position of the air conditioner is reduced, the condition that the refrigerants are gathered at the fixed position of the certain indoor space and are difficult to evacuate to the lower part of the indoor space quickly, and the contact probability between the evacuated refrigerants carried by the air-conditioned air and an electric control system is reduced.
In some embodiments of the present application, when the second air guiding plate 83 swings to the left by the maximum limit angle and keeps blowing air at the angle for time t1, it swings to the right by the maximum limit angle and keeps blowing air at the angle for time t 2.
The time t1 and the time t2 are selected according to the structural property of the air conditioner and can be obtained according to the experimental result.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the present invention shall be covered thereby. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An air conditioner, comprising:
an indoor heat exchanger;
an outdoor heat exchanger;
a compressor;
an electronic expansion valve;
the indoor heat exchanger, the outdoor heat exchanger, the compressor and the electronic expansion valve are connected through the pipelines;
the fresh air machine is used for providing driving force required by fresh air flowing into the room;
an indoor fan for providing a driving force for indoor wind to flow;
a controller connected to the compressor, the indoor fan, the fresh air fan, and the electronic expansion valve;
the concentration sensor is connected with the controller and used for detecting the concentration of indoor refrigerants and uploading the indoor refrigerants to the controller;
when the concentration of the refrigerant is not less than a preset first concentration threshold value, 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.
2. The air conditioner according to claim 1, further comprising a damper and an air valve capable of controlling an 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 controller controls the air door and/or the air valve to be in a maximum air outlet state.
3. The air conditioner according to claim 1 or 2, wherein the controller controls the fresh air machine to rotate at a rotation speed of 2 n.
4. The air conditioner according to claim 1, 2 or 3, wherein the controller controls the indoor fan to rotate at a rotation speed of 1.5 m.
5. The air conditioner according to claim 1, further comprising a first solenoid valve provided on the pipe 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.
6. The air conditioner according to claim 1, 2, 3 or 4, wherein the concentration sensor detects a concentration of an indoor refrigerant, and the controller controls the rotation speeds of the indoor fan and the fresh air fan to be adjusted to 0 when a real-time concentration of the refrigerant is not greater than a preset refrigerant recovery concentration and is maintained for a preset time tw.
7. The air conditioner according to claim 6, wherein in the process that the controller controls the rotation speeds of the indoor fan and the fresh air fan to be adjusted to 0, the fresh air fan is reduced to the rotation speed of 0 at a reduction rate v4, and the indoor fan is reduced to the rotation speed of 0 at a reduction rate v 6.
8. The air conditioner according to claim 5, further comprising a first shutoff valve, wherein the first solenoid valve is disposed in a line between the electronic expansion valve and the indoor heat exchanger, the first shutoff valve is disposed in a line between the first solenoid valve and the indoor heat exchanger, the first solenoid valve is configured to regulate a flow rate of the medium flowing in the line, and the first shutoff valve is configured to shut off and throttle the medium flowing in the line.
9. The air conditioner according to claim 8, further comprising a four-way valve, wherein the indoor heat exchanger and the outdoor heat exchanger are connected to the compressor through the four-way valve, respectively, the four-way valve comprising a first port, a second port, a third port, and a fourth port, and the compressor comprises a suction port connected to the first port and a discharge port connected to the third 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.
10. The air conditioner according to claim 9, further comprising a second solenoid valve and a second stop valve, wherein the second solenoid valve is disposed on a pipeline between the four-way valve and the indoor heat exchanger, the second stop valve is disposed on a pipeline between the second solenoid valve and the indoor heat exchanger, the second solenoid valve is configured to regulate a flow rate of the flowing medium in the pipeline where the second solenoid valve is located, and the second stop valve is configured to cut off and throttle the flowing medium in the pipeline where the second solenoid valve is located.
CN202210761284.0A 2022-06-30 2022-06-30 Air conditioner Active CN115164348B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210761284.0A CN115164348B (en) 2022-06-30 2022-06-30 Air conditioner
PCT/CN2023/085940 WO2024001376A1 (en) 2022-06-30 2023-04-03 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210761284.0A CN115164348B (en) 2022-06-30 2022-06-30 Air conditioner

Publications (2)

Publication Number Publication Date
CN115164348A true CN115164348A (en) 2022-10-11
CN115164348B CN115164348B (en) 2024-03-01

Family

ID=83488581

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210761284.0A Active CN115164348B (en) 2022-06-30 2022-06-30 Air conditioner

Country Status (1)

Country Link
CN (1) CN115164348B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024001376A1 (en) * 2022-06-30 2024-01-04 海信空调有限公司 Air conditioner

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1392944A (en) * 2000-09-26 2003-01-22 大金工业株式会社 Air conditioner
CN103322641A (en) * 2012-03-21 2013-09-25 广东美芝精密制造有限公司 Safety control method for conditioner utilizing flammable refrigerants
WO2015198741A1 (en) * 2014-06-24 2015-12-30 ヤンマー株式会社 Chiller system
CN106839283A (en) * 2017-01-05 2017-06-13 青岛海尔空调器有限总公司 The detection method of coolant leakage
CN109974090A (en) * 2019-04-29 2019-07-05 广东美的制冷设备有限公司 Air conditioner
CN110107984A (en) * 2019-04-29 2019-08-09 广东美的制冷设备有限公司 Coolant leakage control method, system and the air-conditioning of air-conditioning
CN114151922A (en) * 2021-09-30 2022-03-08 杭州先途电子有限公司 Control method, controller and air conditioning system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1392944A (en) * 2000-09-26 2003-01-22 大金工业株式会社 Air conditioner
CN103322641A (en) * 2012-03-21 2013-09-25 广东美芝精密制造有限公司 Safety control method for conditioner utilizing flammable refrigerants
WO2015198741A1 (en) * 2014-06-24 2015-12-30 ヤンマー株式会社 Chiller system
CN106839283A (en) * 2017-01-05 2017-06-13 青岛海尔空调器有限总公司 The detection method of coolant leakage
CN109974090A (en) * 2019-04-29 2019-07-05 广东美的制冷设备有限公司 Air conditioner
CN110107984A (en) * 2019-04-29 2019-08-09 广东美的制冷设备有限公司 Coolant leakage control method, system and the air-conditioning of air-conditioning
CN114151922A (en) * 2021-09-30 2022-03-08 杭州先途电子有限公司 Control method, controller and air conditioning system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024001376A1 (en) * 2022-06-30 2024-01-04 海信空调有限公司 Air conditioner

Also Published As

Publication number Publication date
CN115164348B (en) 2024-03-01

Similar Documents

Publication Publication Date Title
US9459013B2 (en) Air-conditioning apparatus with safety measure for ventilation of inflammable refrigerant from heat exchanger
CN103363601B (en) Heat pump type air adjusting device
CN101813358B (en) Air conditioning unit and method for detecting operation state thereof
CN114963299B (en) Air conditioner
CN106352400A (en) Air conditioning device
CN110402360B (en) Indoor unit of refrigerating device
CN115164349B (en) Air conditioner
CN101929706A (en) Air conditioner and control method thereof
CN106524330A (en) Air conditioner outdoor unit, air conditioning unit and refrigeration control method and heating control method thereof
CN115164348B (en) Air conditioner
CN115143592B (en) Air conditioner
CN115143591B (en) Air conditioner
CN218511135U (en) Refrigerant leakage detection system in air conditioning system
JP2011137597A (en) Air conditioning device
CN115247859B (en) Air conditioner
CN104344512A (en) Fresh air energy saving control method with CO (carbon monoxide) detection function
CN106440178B (en) A kind of cabinet refrigeration system
CN103398515A (en) Air conditioner system and control method thereof
CN206377770U (en) Air-conditioner outdoor unit and air-conditioner set
CN113757794A (en) Combustible refrigerant air conditioner and control method thereof
CN212618678U (en) Combustible refrigerant air conditioner
CN104456818A (en) Energy-saving fresh air conditioner
WO2024001376A1 (en) Air conditioner
CN115183397B (en) Air conditioner
JP2005016884A (en) Air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant