US20250155152A1 - Air supplement control method for air conditioner, and air conditioner, controller and computer-readable storage medium - Google Patents

Air supplement control method for air conditioner, and air conditioner, controller and computer-readable storage medium Download PDF

Info

Publication number
US20250155152A1
US20250155152A1 US19/023,012 US202519023012A US2025155152A1 US 20250155152 A1 US20250155152 A1 US 20250155152A1 US 202519023012 A US202519023012 A US 202519023012A US 2025155152 A1 US2025155152 A1 US 2025155152A1
Authority
US
United States
Prior art keywords
electromagnetic valve
compressor
way electromagnetic
refrigerant flow
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.)
Pending
Application number
US19/023,012
Other languages
English (en)
Inventor
Yangyang YUAN
Haizhao DENG
Hui Yu
Si Li
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.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202310041940.4A external-priority patent/CN118328604A/zh
Priority claimed from CN202320082210.4U external-priority patent/CN219160502U/zh
Application filed by GD Midea Air Conditioning Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Assigned to GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD. reassignment GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENG, Haizhao, LI, SI, YU, HUI, YUAN, Yangyang
Publication of US20250155152A1 publication Critical patent/US20250155152A1/en
Pending legal-status Critical Current

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
    • F24F11/70—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
    • F24F11/76—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 means responsive to temperature, e.g. bimetal springs
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • 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
    • 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
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Definitions

  • the present disclosure relates to the field of air conditioners, and in particular, to a gas supplement control method for an air conditioner, and an air conditioner, a controller and a computer-readable storage medium.
  • control logic of a one-way electromagnetic valve in the enthalpy injection system is mainly adjusted according to ambient temperature.
  • the one-way electromagnetic valve opens when the ambient temperature is lower than a certain temperature, so that an enthalpy injection gas supplement branch of the enthalpy injection system breakovers, thereby achieving air supplement.
  • the existing control method has the following disadvantages: the refrigerant entering a gas supplement port of a compressor from the enthalpy injection gas supplement branch may have liquid entrainment problems, resulting in compressor damage and poor reliability.
  • the present disclosure is intended to at least partially solve the technical problems in existing technology. Therefore, the present disclosure provides a gas supplement control method for an air conditioner, and an air conditioner, a controller and a computer-readable storage medium, which can reduce the liquid entrainment risk when the refrigerant enters the gas supplement port of the compressor from the enthalpy injection gas supplement branch, thus improving the operation reliability of the compressor.
  • an embodiment provides a gas supplement control method for an air conditioner.
  • the air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, an enthalpy increasing system and a gas bypass.
  • the enthalpy increasing system includes a one-way electromagnetic valve.
  • a first refrigerant flow path is arranged between the outdoor heat exchanger and the indoor heat exchanger.
  • a second refrigerant flow path is arranged between the first refrigerant flow path and an enthalpy increasing port of the compressor.
  • the one-way electromagnetic valve is arranged in the second refrigerant flow path, and the gas bypass is arranged in the first refrigerant flow path and located between the enthalpy increasing system and the indoor heat exchanger.
  • the gas supplement control method includes: acquiring an outdoor ambient temperature and an operating state of the compressor; and switching between open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature and the operating state.
  • switching between open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature and the operating state includes: switching between open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature, a current operating frequency of the compressor and a current exhaust temperature.
  • switching between open and closed state of the one-way electromagnetic valve according to the outdoor ambient temperature, a current operating frequency of the compressor and a current exhaust temperature includes: determining a current exhaust superheat of the compressor according to the current exhaust temperature and an evaporation temperature when the current exhaust temperature is greater than a first preset exhaust temperature; and in response to the outdoor ambient temperature being less than a preset outdoor temperature, the current operating frequency being greater than a preset frequency, and the current exhaust superheat being greater than a first preset exhaust superheat, opening the one-way electromagnetic valve.
  • switching between open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature, a current operating frequency of the compressor and a current exhaust temperature further includes: in response to the outdoor ambient temperature being less than a preset outdoor temperature, the current operating frequency being greater than a preset frequency, and the current exhaust temperature being greater than a second preset exhaust temperature, opening the one-way electromagnetic valve, where the second preset exhaust temperature is greater than the first preset exhaust temperature.
  • the outdoor ambient temperature being less than a preset outdoor temperature refers to the outdoor ambient temperature being continuously less than the preset outdoor temperature for a preset period of time.
  • switching between open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature, a current operating frequency of the compressor and a current exhaust temperature further includes at least one of:
  • an embodiment provides an air conditioner, including:
  • the enthalpy increasing system further includes a flash evaporator, where the flash evaporator includes a first refrigerant flow hole, a second refrigerant flow hole and a third refrigerant flow hole.
  • the flash evaporator is connected to the enthalpy increasing port of the compressor through the first refrigerant flow hole and the one-way electromagnetic valve sequentially, is connected to the outdoor heat exchanger through the second refrigerant flow hole, and is connected to the gas bypass through the third refrigerant flow hole.
  • the enthalpy increasing system further includes a throttling device, and the throttling device is arranged in the first refrigerant flow path and located between the outdoor heat exchanger and the gas bypass.
  • the throttling device includes at least one of: a first throttling device, arranged in the first refrigerant flow path and located between the outdoor heat exchanger and the second refrigerant flow hole; and a second throttling device, arranged in the first refrigerant flow path and located between the third refrigerant flow hole and the gas bypass.
  • a respective one of first throttling device and the second throttling device is an electronic expansion valve or a capillary tube.
  • the air conditioner further includes a four-way valve, which is respectively communicated with the outdoor heat exchanger, the indoor heat exchanger, and a gas return hole and a gas exhaust hole of the compressor.
  • an embodiment provides a controller, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, where the processor implements the gas supplement control method for the air conditioner according to the first aspect of the present disclosure when running the computer program.
  • an embodiment provides a computer-readable storage medium, on which computer-executable instructions are stored, where the computer-executable instructions are configured to execute the gas supplement control method for the air conditioner according to the first aspect of the present disclosure.
  • the air conditioner of the embodiment of the present disclosure includes the compressor, the outdoor heat exchanger, the indoor heat exchanger, the enthalpy increasing system and the gas bypass.
  • the enthalpy increasing system includes the one-way electromagnetic valve.
  • the first refrigerant flow path is arranged between the outdoor heat exchanger and the indoor heat exchanger.
  • the second refrigerant flow path is arranged between the first refrigerant flow path and the enthalpy increasing port of the compressor.
  • the one-way electromagnetic valve is arranged in the second refrigerant flow path.
  • the gas bypass is arranged in the first refrigerant flow path and located between the enthalpy increasing system and the indoor heat exchanger.
  • the control logic of the one-way electromagnetic valve are as follows. Firstly, the embodiment of the present disclosure obtains the outdoor ambient temperature and the operating state of the compressor. Next, the embodiment of the present disclosure witches between the open and closed states of the one-way electromagnetic valve according to the outdoor ambient temperature and the operating state. According to the technical scheme of the embodiment of the present disclosure, the opening and closing of the one-way electromagnetic valve may be switched according to the outdoor ambient temperature and the operating state of the compressor in combination, which is different from the existing technology which switches between the open state and closed state of the one-way electromagnetic valve only according to the outdoor ambient temperature in existing technology. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor, and avoid the liquid entrainment risk. In addition, the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • FIG. 1 is a schematic diagram of a system architecture platform for implementing a gas supplement control method for an air conditioner provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of an air conditioner provided by an embodiment of the present disclosure
  • FIG. 3 is a flowchart of the gas supplement control method for the air conditioner provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 6 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 7 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 8 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 9 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • FIG. 10 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • orientation or positional relationship related to orientation description is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present disclosure.
  • the term “several” means one or more, and the term “a plurality of” means more than two.
  • the terms “greater than”, “less than”, “exceeding” are understood as excluding this number, and the terms “above”, “below” and “within” are understood as including this number.
  • a description of “first” or “second” referring to a technical feature is only for the purpose of distinguishing the technical feature, and it is not to be understood as indicating or implying a relative importance or implicitly indicating the number or the precedence of the technical feature.
  • an enthalpy injection system is often required for an air conditioner that can achieve ultra-low temperature heating.
  • control logic of a one-way electromagnetic valve in the enthalpy injection system is mainly adjusted according to ambient temperature.
  • the one-way electromagnetic valve opens when the ambient temperature is lower than a certain temperature, so that an enthalpy injection gas supplement branch of the enthalpy injection system opens, thus achieving air supplement.
  • the existing control method has the following disadvantages: the refrigerant entering a gas supplement port of a compressor from the enthalpy injection gas supplement branch may have liquid entrainment problems, resulting in compressor damage and poor reliability.
  • embodiments of the present disclosure provide a gas supplement control method for an air conditioner, and an air conditioner, a controller and a computer-readable storage medium, which can reduce the liquid entrainment risk when the refrigerant enters the gas supplement port of the compressor from the enthalpy injection gas supplement branch, thereby improving the operation reliability of the compressor.
  • FIG. 1 is a schematic diagram of a system architecture platform for implementing the gas supplement control method for the air conditioner provided by an embodiment of the present disclosure.
  • a system architecture platform 100 of the embodiment of the present disclosure includes one or more processors 110 and one or more memories 120 .
  • the system architecture platform 100 has one processor 110 and one memory 120 .
  • the processor 110 and the memory 120 may be connected by a bus or other means.
  • the connection by the bus is taken as an example in FIG. 1 .
  • the memories 120 may be configured to store non-transitory software programs and non-transitory computer executable programs.
  • the memories 120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk memory device, flash memory device, or other non-transitory solid-state memory devices.
  • the memories 120 may include a memory 120 remotely arranged relative to the processor 110 , and this remote memory may be connected to the system architecture platform 100 through a network. Examples of the above networks include, but are not limited to, Internet, Intranet, Local Area Network, Mobile Communication Network, and combinations thereof.
  • the device structure shown in FIG. 1 does not constitute a limitation to the system architecture platform 100 , and may include more or less components than shown, or combine some components, or have different component arrangements.
  • the processor 110 may be configured to invoke a gas supplement control program for an air conditioner stored in the memory 120 , thus realizing the gas supplement control method for the air conditioner.
  • FIG. 2 is a schematic structural diagram of an air conditioner provided by an embodiment of the present disclosure.
  • the air conditioner of the embodiment of the present disclosure includes, but is not limited to, a compressor 200 , an outdoor heat exchanger 300 , an indoor heat exchanger 400 , a water tray, an enthalpy increasing system and a gas bypass 600 .
  • the outdoor heat exchanger 300 is connected to the indoor heat exchanger 400 through a first refrigerant flow path.
  • the first refrigerant flow path includes a flow path branch, that is, a second refrigerant flow path.
  • the first refrigerant flow path is capable of being connected to an enthalpy increasing port of the compressor 200 through the second refrigerant flow path.
  • the enthalpy increasing system includes a one-way electromagnetic valve 510 in the second refrigerant flow path.
  • the water tray is located below the outdoor heat exchanger 300 .
  • the gas bypass 600 is arranged in the first refrigerant flow path and located between the enthalpy increasing system and the indoor heat exchanger 400 , and is also arranged at the water tray.
  • the compressor 200 mentioned above is an enhanced vapor injection compressor 200 , which adopts two-stage throttling intermediate gas injection technology, and uses a flash evaporator 520 for gas-liquid separation to achieve enthalpy increasing effect.
  • an exhaust capacity of the compressor 200 is improved, and a purpose of improving heating capacity in low temperature environment is achieved.
  • the enthalpy increasing system mentioned above can improve a heat extraction process in a heating mode, so that more outdoor heat can be sent indoors.
  • the enthalpy increasing system optimizes the medium-pressure refrigerant injection technology, inhales a part of the gas with intermediate pressure through the intermediate-pressure suction hole, and then mixes the part of the gas with the partially compressed refrigerant for recompression, thus realizing two-stage compression within a single compressor 200 , increasing the refrigerant flow in the condenser and increasing the enthalpy difference of the main circulation loop, and improving the efficiency of the compressor 200 .
  • the compressor 200 of enhanced vapor injection technology has an additional second suction port to cool the refrigerant in the main cycle by generating vapor.
  • the vapor enters the compressor 200 from the second suction port, and the vapor compression process is divided into two stages by the gas supplement process, and the vapor compression process becomes a quasi-two-stage compression process.
  • Gas injection reduces the exhaust temperature, the exhaust superheat, and a length of the gas-phase heat exchange area of the condenser, and increases the two-phase heat exchange area, thus improving the heat exchange efficiency of the condenser.
  • the greater the difference between an evaporation temperature and a condensation temperature the better the effect is, so the effect will be more obvious in the low temperature environment.
  • the embodiment of the present disclosure includes the gas bypass 600 located at the water tray.
  • the outdoor heat exchanger 300 generates condensed water and drip the water into the water tray. If the outdoor ambient temperature is relatively low, the condensed water in the water tray may be frosted or frozen, thus blocking the water tray. Therefore, the embodiment of the present disclosure adopts the gas bypass 600 to perform defrosting or deicing treatment.
  • the refrigerant enters the indoor heat exchanger 400 from a gas exhaust hole of the compressor 200 and releases heat to the indoor environment, and then exits the indoor heat exchanger 400 and enters the gas bypass 600 .
  • the gas exiting the indoor heat exchanger 400 has released heat at this time, its temperature is still in a high heat state, so the gas bypass 600 is also in a high heat state at this time, and capable of defrosting or deicing.
  • the gas bypass 600 of the embodiment of the present disclosure includes, but is not limited to, a plurality of U-shaped pipes spliced in sequence, so that the gas bypass 600 has large area and better defrosting effect.
  • the air conditioner of the embodiment of the present disclosure further includes a drainage device, where one end of the drainage device is located at the water tray and configured to extract the condensed water in the water tray, and another end of the drainage device is configured to spray the condensed water to the indoor heat exchanger 400 .
  • the embodiment of the present disclosure is capable of using the hot gas bypass, namely the gas bypass 600 , to heat the water tray of the outdoor unit to ensure that the water temperature is higher than the freezing or frosting temperature, and then spray the water of the outdoor unit to the indoor unit through the drainage device, thus achieving the humidification effect.
  • the hot gas bypass namely the gas bypass 600
  • the one-way electromagnetic valve 510 may be a split combination structure of a one-way valve and an electromagnetic valve, or an integrated combination structure of the one-way valve and the electromagnetic valve.
  • the air conditioner in the embodiment of the present disclosure may be a window-mounted air conditioner or a split air conditioner, and the structural form of the air conditioner is not specifically limited in the embodiment of the present disclosure.
  • the enthalpy increasing system in the air conditioner of the embodiment of the present disclosure further includes a flash evaporator 520 , which includes a first refrigerant flow hole, a second refrigerant flow hole and a third refrigerant flow hole.
  • the flash evaporator 520 is connected to the enthalpy increasing port of the compressor 200 through the first refrigerant flow hole and the one-way electromagnetic valve 510 sequentially.
  • the flash evaporator 520 is connected to the outdoor heat exchanger 300 through the second refrigerant flow hole.
  • the flash evaporator 520 is connected to the gas bypass 600 through the third refrigerant flow hole.
  • the flash evaporator 520 mentioned above can realize flash evaporation.
  • the flash evaporation refers to a phenomenon that after saturated liquid with high pressure enters a relatively low pressure container, the saturated liquid become saturated vapor and saturated liquid in combination under the pressure of a part of the container due to the sudden drop of pressure.
  • the enthalpy increasing system in the air conditioner of the embodiment of the present disclosure further includes a throttling device, which is arranged in the first refrigerant flow path and located between the outdoor heat exchanger 300 and the gas bypass 600 .
  • the throttling device mentioned above may include a first throttling device 530 and/or a second throttling device 540 .
  • the first throttling device 530 is arranged in the first refrigerant flow path and located between the outdoor heat exchanger 300 and the second refrigerant flow hole.
  • the second throttling device 540 is arranged in the first refrigerant flow path and located between the third refrigerant flow hole and the gas bypass 600 .
  • a respective one of the first throttling device 530 and the second throttling device 540 mentioned above may be an electronic expansion valve or a capillary tube.
  • the capillary tube mentioned above is the simplest throttling device of the air conditioner.
  • the capillary tube is a copper tube which has a specified length and an inner diameter of 0.5 mm to 2 mm. Advantages of such an arrangement are convenient manufacture and low price, and the disadvantage is that there is no function to adjust the flow.
  • the structure of the electronic expansion valve mentioned above may be composed of three parts: detection, control and execution. Advantages of such an arrangement are wide flow adjustment range and high control precision, and it is suitable for intelligent control and can adapt to the rapid change of refrigerant flow with high efficiency.
  • the electronic expansion valve can be regarded as an intelligent capillary tube with variable inner diameter.
  • the throttling device is capable of throttling liquid refrigerant with medium-temperature and high-pressure into wet vapor with low-temperature and low-pressure, and then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect.
  • the expansion valve controls valve flow through change of superheat at an end of the evaporator to prevent the underutilization of evaporator area and cylinder knocking.
  • the air conditioner of the embodiment of the present disclosure further includes a four-way valve 700 respectively communicated with the outdoor heat exchanger 300 , the indoor heat exchanger 400 , and a gas return hole and the gas exhaust hole of the compressor 200 .
  • the air conditioner of the embodiment of the present disclosure further includes a muffler 800 between the four-way valve 700 and the gas exhaust hole of the compressor 200 .
  • the refrigeration operation flow of the embodiment of the present disclosure is as follows: the refrigerant comes out of the gas exhaust hole of the compressor 200 , enters the outdoor heat exchanger 300 through the four-way valve 700 , comes out of the outdoor heat exchanger 300 , passes through the first throttling device 530 and enters the flash evaporator 520 which is in a full-operation state.
  • the one-way electromagnetic valve 510 is in a closed state, so that gas cannot enter the enthalpy increasing port of the compressor 200 , that is, the gas supplement port.
  • the refrigerant coming out of the flash evaporator 520 is throttled by the second throttling device 540 , and then enters the indoor heat exchanger 400 through the gas bypass 600 .
  • the refrigerant evaporates in the indoor heat exchanger 400 and becomes gas, and then returns to the gas return port of the compressor 200 through the four-way valve 700 .
  • the heating operation flow of the embodiment of the present disclosure is as follows: the refrigerant comes out of the gas exhaust hole of the compressor 200 , enters the indoor heat exchanger 400 through the four-way valve 700 , comes out of the indoor heat exchanger 400 into the gas bypass 600 , comes out of the gas bypass 600 and enters the flash evaporator 520 through the second throttling device 540 .
  • the gas enters the enthalpy increasing port of the compressor 200 , that is, the gas supplement port, through the one-way electromagnetic valve 510 , and at the same time, the liquid enters the outdoor heat exchanger 300 after being throttled through the first throttling device 530 , and then comes out of the outdoor heat exchanger 300 and returns to the gas return port of the compressor 200 through the four-way valve 700 .
  • the structure of the controller mentioned above may include a processor 110 and a memory 120 as shown in FIG. 1 .
  • the controller may be connected to the compressor 200 , the one-way electromagnetic valve 510 , the first throttling device 530 and the second throttling device 540 , so that the controller can adjust an operating frequency of the compressor 200 , and control an open state and a closed state of the one-way electromagnetic valve 510 and opening degrees of the first throttling device 530 and the second throttling device 540 .
  • the structure described above is not limited to the air conditioner, and may include more or less components than shown, or combine some components, or have different component arrangements.
  • FIG. 3 is a flowchart of a gas supplement control method for an air conditioner provided by an embodiment of the present disclosure.
  • the gas supplement control method which can be applied to the air conditioner mentioned above, includes but not limited to a step S 100 and a step S 200 .
  • step S 100 an outdoor ambient temperature and an operating state of the compressor are acquired.
  • an open state and a closed state of the one-way electromagnetic valve are switched according to the outdoor ambient temperature and the operating state.
  • opening and closing of the one-way electromagnetic valve can be switched according to the outdoor ambient temperature and the operating state of the compressor in combination at the same time, which is different from the existing method that switches between the open state and the closed state of the one-way electromagnetic valve only according to the outdoor ambient temperature. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor and avoid the liquid entrainment risk. In addition, the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • the open state and the closed state of the one-way electromagnetic valve mentioned above may be an open state or a closed state.
  • FIG. 4 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 200 may include, but is not limited to, a step S 300 .
  • the open state and the closed state of the one-way electromagnetic valve are switched according to the outdoor ambient temperature, a current operating frequency of the compressor and a current exhaust temperature.
  • the opening and closing of the one-way electromagnetic valve can be switched according to the outdoor ambient temperature, the current operating frequency of the compressor and the current exhaust temperature of the compressor in combination at the same time, which is different from the existing method that switches between the open state and the closed state of traditional one-way electromagnetic valve only according to the outdoor ambient temperature. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor, and avoid the liquid entrainment risk. In addition, the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • FIG. 5 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 410 and a step S 420 .
  • a current exhaust superheat of the compressor is determined according to the current exhaust temperature and an evaporation temperature.
  • the one-way electromagnetic valve is opened.
  • the embodiment of the present disclosure can calculate the current exhaust superheat of the compressor according to the current exhaust temperature and the evaporation temperature. In addition, if the outdoor ambient temperature is less than the preset outdoor temperature, it indicates that the compressor is in a low-temperature heating condition. If the current operating frequency of the compressor is greater than the preset frequency, it indicates that the compressor is in a high-power state. If the current exhaust superheat is greater than the first preset exhaust superheat, it indicates that the refrigerant without liquid enters the compressor. In this case, the embodiment of the present disclosure may open the one-way electromagnetic valve to perform an enhanced vapor injection operation.
  • the first preset exhaust temperature, the preset outdoor temperature, the preset frequency and the first preset exhaust superheat may be obtained by preset.
  • FIG. 6 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 510 and a step S 520 .
  • the current operating frequency being greater than the preset frequency
  • the current exhaust temperature being greater than a second preset exhaust temperature
  • the one-way electromagnetic valve is opened, where the second preset exhaust temperature is greater than the first preset exhaust temperature.
  • the embodiment of the present disclosure may open the one-way electromagnetic valve to perform the enhanced vapor injection operation.
  • the second preset exhaust temperature mentioned above is greater than the first preset exhaust temperature, and is obtained by preset.
  • a determination condition that the outdoor ambient temperature is less than the preset outdoor temperature may be that the outdoor ambient temperature is less than the preset outdoor temperature for a preset period of time.
  • FIG. 7 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 610 and a step S 620 .
  • step S 610 in response to the outdoor ambient temperature being greater than or equal to the preset outdoor temperature.
  • the one-way electromagnetic valve is closed.
  • FIG. 8 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 710 and a step S 720 .
  • the one-way electromagnetic valve is closed.
  • FIG. 9 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 810 and a step S 820 .
  • step S 810 in response to the current exhaust temperature being less than a third preset exhaust temperature which is less than the first preset exhaust temperature.
  • the one-way electromagnetic valve is closed.
  • FIG. 10 is a flowchart of the gas supplement control method for the air conditioner provided by another embodiment of the present disclosure.
  • the above step S 300 may include, but is not limited to, a step S 910 , a step S 920 and a step S 930 .
  • the current exhaust superheat of the compressor is determined according to the current exhaust temperature and the evaporation temperature.
  • step S 920 in response to the current exhaust superheat being less than a second preset exhaust superheat which is less than the first preset exhaust superheat.
  • the one-way electromagnetic valve is closed.
  • the outdoor ambient temperature is greater than or equal to the preset outdoor temperature, it indicates that the compressor is not currently in a low-temperature heating condition.
  • the current operating frequency of the compressor is less than or equal to the preset frequency, it indicates that the compressor is in a low-power state. In this case, it may be tried to increase the operating frequency of the compressor and observe the working condition.
  • the current exhaust temperature is less than the third preset exhaust temperature, it indicates that the current exhaust temperature is low.
  • the current exhaust superheat is less than the second preset exhaust superheat, it indicates that the refrigerant with liquid may enter the compressor. In this case, the one-way electromagnetic valve is necessary to be closed in the embodiment of the present disclosure, and the enhanced vapor injection operation is not allowed.
  • the control of the one-way electromagnetic valve is as follows.
  • conditions for opening of the one-way electromagnetic valve are as follows:
  • conditions for closing of the one-way electromagnetic valve are as follows:
  • An embodiment of the present disclosure provides a controller, which includes a processor, a memory and a computer program stored in the memory and executable on the processor.
  • controller in this embodiment may include a processor and a memory in the embodiment shown in FIG. 1 , both of which belong to the same inventive concept, so they have the same implementation principle and beneficial effects, and will not be described in detail here.
  • Non-transitory software programs and instructions required to realize the gas supplement control method for the air conditioner of the above embodiment are stored in the memory, and when the programs and instructions are executed by the processor, the gas supplement control method for the air conditioner of the above embodiment is executed.
  • the opening and closing of the one-way electromagnetic valve can be switched based on the outdoor ambient temperature and the operating state of the compressor, which is different from the existing method that switches between the open state and the closed state of the one-way electromagnetic valve only according to the outdoor ambient temperature. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor, and avoid the liquid entrainment risk. In addition, the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • controller of the embodiment of the present disclosure may execute the gas supplement control method for the air conditioner of any of the above embodiments
  • the implementations and technical effects of the controller of the embodiment of the present disclosure may refer to that of the gas supplement control method for the air conditioner of any of the above embodiments.
  • an embodiment of the present disclosure provides an air conditioner, which includes but is not limited to the above controller.
  • the opening and closing of the one-way electromagnetic valve can be switched based on the outdoor ambient temperature and the operating state of the compressor, which is different from the existing technology which switches between the open state and the closed state of the one-way electromagnetic valve only according to the outdoor ambient temperature. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor, and avoid the liquid entrainment risk.
  • the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • the air conditioner of the embodiment of the present disclosure includes the controller of any of the above embodiments, and the controller of any of the above embodiments may execute the gas supplement control method for the air conditioner of any of the above embodiments, the implementations and technical effects of the air conditioner of the embodiment of the present disclosure may refer to that of the gas supplement control method for the air conditioner of any of the above embodiments.
  • an embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are configured to execute the gas supplement control method for the air conditioner. Illustratively, the method in FIGS. 3 to 10 described above are performed.
  • the opening and closing of the one-way electromagnetic valve can be switched based on the outdoor ambient temperature and the operating state of the compressor, which is different from the existing technology which switches between the open state and the closed state of the one-way electromagnetic valve only according to the outdoor ambient temperature. Therefore, the embodiment of the present disclosure can optimize the gas supplement control in the enthalpy injection system, ensure the reliable operation of the compressor, and avoid the liquid entrainment risk.
  • the scheme of the embodiment of the present disclosure is simple and has strong realizability.
  • the computer-readable storage medium of the embodiment of the present disclosure may execute the gas supplement control method for the air conditioner of any of the above embodiments
  • the implementations and technical effects of the computer-readable storage medium of the embodiment of the present disclosure may refer to that of the gas supplement control method for the air conditioner of any of the above embodiments.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic boxes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other media that may be used to store desired information and may be accessed by a computing device.
  • communication media usually include computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)
US19/023,012 2023-01-12 2025-01-15 Air supplement control method for air conditioner, and air conditioner, controller and computer-readable storage medium Pending US20250155152A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CN202310041940.4A CN118328604A (zh) 2023-01-12 2023-01-12 空调器的补气控制方法、空调器、控制器和存储介质
CN202320082210.4U CN219160502U (zh) 2023-01-12 2023-01-12 空调器
CN202320082210.4 2023-01-12
CN202310041940.4 2023-01-12
PCT/CN2023/084466 WO2024148686A1 (zh) 2023-01-12 2023-03-28 空调器的补气控制方法、空调器、控制器和存储介质

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/084466 Continuation WO2024148686A1 (zh) 2023-01-12 2023-03-28 空调器的补气控制方法、空调器、控制器和存储介质

Publications (1)

Publication Number Publication Date
US20250155152A1 true US20250155152A1 (en) 2025-05-15

Family

ID=91897850

Family Applications (1)

Application Number Title Priority Date Filing Date
US19/023,012 Pending US20250155152A1 (en) 2023-01-12 2025-01-15 Air supplement control method for air conditioner, and air conditioner, controller and computer-readable storage medium

Country Status (2)

Country Link
US (1) US20250155152A1 (zh)
WO (1) WO2024148686A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118935672B (zh) * 2024-08-30 2025-12-02 浙江中广电器集团股份有限公司 一种补气增焓型热泵空调器及其制热运转控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009210174A (ja) * 2008-03-04 2009-09-17 Sharp Corp 空気調和機
WO2013051166A1 (ja) * 2011-10-03 2013-04-11 三菱電機株式会社 冷凍サイクル装置
CN102538273B (zh) * 2012-02-10 2013-11-06 海信（山东）空调有限公司 补气增焓空调系统及控制方法和空调器
CN104596166A (zh) * 2013-10-31 2015-05-06 海尔集团公司 一种空调器及其补气增焓方法
CN111692708B (zh) * 2020-06-16 2024-04-05 珠海格力节能环保制冷技术研究中心有限公司 具有抑制结霜功能的空调系统及抑制结霜的控制方法
CN217303008U (zh) * 2022-04-30 2022-08-26 芜湖美智空调设备有限公司 窗式空调器

Also Published As

Publication number Publication date
WO2024148686A9 (zh) 2024-08-22
WO2024148686A1 (zh) 2024-07-18

Similar Documents

Publication Publication Date Title
US9234676B2 (en) Hot water supply apparatus associated with heat pump
CN109386988B (zh) 多联机系统及其室外机、控制方法及装置和存储介质
US6883339B2 (en) Method for controlling power saving operation of refrigerator with two evaporator
CN111121353A (zh) 一种可提高换热性能的空调及其控制方法
US9217574B2 (en) Hot water supply apparatus associated with heat pump
US20250155147A1 (en) Ice melting method for air conditioner, and controller, air conditioner and computer-readable storage medium
US20210364206A1 (en) Heat pump system and air conditioner
US20250155152A1 (en) Air supplement control method for air conditioner, and air conditioner, controller and computer-readable storage medium
CN112728800A (zh) 空调器
JP7416238B2 (ja) 冷凍サイクル装置
CN107559953A (zh) 多联机系统及其过冷回路阀体的控制方法和装置
CN112880228A (zh) 一种空调防回液装置及防止空调回液的方法
KR100738780B1 (ko) 과냉각장치
JP2001108345A (ja) 二段圧縮冷凍冷蔵装置
CN118328604A (zh) 空调器的补气控制方法、空调器、控制器和存储介质
CN220471920U (zh) 空调系统
JP2009293887A (ja) 冷凍装置
CN111043723A (zh) 一种空调器及其控制方法
KR100293700B1 (ko) 냉장고의냉동시스템및그제어방법
CN219160502U (zh) 空调器
CN117419447A (zh) 多联机系统的控制方法、控制器、多联机系统及存储介质
JP7474911B1 (ja) 冷凍サイクル装置
CN221055345U (zh) 制冷系统及冷藏设备
CN117053283A (zh) 空调器的控制方法、控制器、空调器和存储介质
CN119713591A (zh) 空调与热泵热水器的组合热泵系统、控制方法及控制装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YUAN, YANGYANG;DENG, HAIZHAO;YU, HUI;AND OTHERS;REEL/FRAME:069886/0143

Effective date: 20250115

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION