# US 2025/0155147 A1 · Ice melting method for air conditioner, and controller, air conditioner and computer-readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0155147 A1 - Document ID: US20250155147A1 - Status: Published application - Kind: A1 - Application number: 19/025,412 - Filed: 2025-01-16 - Published: 2025-05-15 - Earliest claimed: 2023-01-12 - Assignees: Gd Midea Air-Conditioning Equipment Co., Ltd. - Applicants: Gd Midea Air-Conditioning Equipment Co., Ltd. - Inventors: Yangyang YUAN; Haizhao DENG; Hui YU; Si LI - Web page: https://patentgrep.com/patent/US20250155147A1 ## CPC - F24F 11/42: of outdoor units - F24F 1/16: Arrangement or mounting thereof - F24F 11/77: by controlling the speed of ventilators - F24F 11/84: using valves - F24F 11/86: by controlling compressors within refrigeration or heat pump circuits - F24F 13/22: Means for preventing condensation or evacuating condensate - F24F 13/222: {for evacuating condensate} - F25B 13/00: Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) - F25B 49/02: for compression type machines, plants or systems - F25B 41/39: Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator - F25B 47/022: {hot gas defrosting} - F25B 2400/13: Economisers - F25B 2400/23: Separators - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS ## Abstract An ice melting method for an air conditioner, a controller, an air conditioner and a computer-readable storage medium are provided. The air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, an enthalpy-increasing system, a water-receiving tray and a gas bypass. The enthalpy-increasing system is provided with a flash evaporator, a one-way electromagnetic valve and a throttling device; a first refrigerant flow path is provided between the outdoor heat exchanger and the indoor heat exchanger; a second refrigerant flow path is provided between the flash evaporator and an enthalpy-increasing port of the compressor; the gas bypass is arranged on the first refrigerant flow path and is positioned between the enthalpy-increasing system and the indoor heat exchanger; the water-receiving tray is positioned below the outdoor heat exchanger; and the gas bypass is arranged on the water-receiving tray. ## Claims ### Claim 1 An ice melting method for an air conditioner, wherein the air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, an enthalpy increasing system, a water tray and a gas bypass; the enthalpy increasing system comprises a flash evaporator, a one-way electromagnetic valve and a throttling device; a first refrigerant flow path is arranged between the outdoor heat exchanger and the indoor heat exchanger, and the flash evaporator and the throttling device are arranged in the first refrigerant flow path; a second refrigerant flow path is arranged between the flash evaporator and an enthalpy increasing port of the compressor, and the one-way electromagnetic valve is arranged on 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 water tray is located below the outdoor heat exchanger; and the gas bypass is arranged at the water tray; wherein the ice melting method comprises: detecting an icing condition in the water tray; and in response to the icing condition indicating ice existing in the water tray, adjusting an operating state of the air conditioner to improve heat supply of the gas bypass. ### Claim 2 (depends on 1) The ice melting method of claim 1, wherein the air conditioner further comprises an ice detection sensor, and the detecting the icing condition in the water tray comprises: detecting resistance in the water tray through the ice detection sensor; and in response to the resistance being higher than a preset resistance threshold, determining ice existing in the water tray. ### Claim 3 (depends on 2) The ice melting method of claim 2, wherein the detecting the icing condition in the water tray further comprises: in response to the resistance being lower than or equal to the preset resistance threshold, determining ice not existing in the water tray. ### Claim 4 (depends on 1) The ice melting method of claim 1, wherein the adjusting the operating state of the air conditioner comprises: maintaining the one-way electromagnetic valve open and maintaining the opening degree of the throttling device; and increasing the operating frequency of the compressor, decreasing a rotation speed of an indoor fan, and maintaining a rotation speed of an outdoor fan. ### Claim 5 (depends on 4) The ice melting method of claim 4, wherein the decreasing the rotation speed of the indoor fan comprises: decreasing the rotation speed of the indoor fan to keep a temperature of the indoor heat exchanger higher than a first preset temperature. ### Claim 6 (depends on 1) The ice melting method of claim 1, further comprising: re-detecting the resistance in the water tray at every preset time; and determining whether to continue ice melting according to the detected resistance. ### Claim 7 (depends on 1) The ice melting method of claim 1, further comprising: re-detecting a temperature in the water tray at every preset time; and determining whether to continue ice melting according to the detected temperature. ### Claim 8 (depends on 1) The ice melting method of claim 1, wherein the throttling device comprises a first throttling device, arranged in the first refrigerant flow path and located between the outdoor heat exchanger and the flash evaporator. ### Claim 9 (depends on 1) The ice melting method of claim 1, wherein the throttling device comprises a second throttling device, arranged in the first refrigerant flow path and located between the flash evaporator and the gas bypass. ### Claim 10 (depends on 1) A controller comprising: a memory; and at least one processor, wherein a computer program is stored in the memory and executable by the at least one processor, and wherein when executing the computer program, the at least one processor performs the ice melting method for an air conditioner of claim 1. ### Claim 11 (depends on 10) An air conditioner comprising the controller of claim 10. ### Claim 12 (depends on 1) A non-transitory computer-readable storage medium storing computer-executable instructions configured to execute the ice melting method for an air conditioner of claim 1.