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CN-122015322-A - Control method for heat pump system, and storage medium

CN122015322ACN 122015322 ACN122015322 ACN 122015322ACN-122015322-A

Abstract

The application discloses a control method of a heat pump system, the heat pump system and a storage medium, and relates to the technical field of heat pumps, wherein the heat pump system comprises a refrigerant circulation loop, the refrigerant circulation loop comprises a compressor, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger, wherein the first heat exchanger, the first throttling device, the refrigerant heat dissipation module and the second heat exchanger are sequentially connected; the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state in the first mode. The application aims to reduce the condensation risk of heating components and improve the running reliability of the system.

Inventors

  • LUO XIONGFEI
  • DENG HAIZHAO

Assignees

  • 广东美的制冷设备有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (13)

  1. 1. The control method of the heat pump system is characterized in that the heat pump system comprises a refrigerant circulation loop, the refrigerant circulation loop comprises a compressor, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger, the first throttling device, the refrigerant heat dissipation module and the second heat exchanger are sequentially connected, a first temperature sensor is arranged between the first throttling device and the refrigerant heat dissipation module, and the refrigerant heat dissipation module is arranged to exchange heat with a heating component, and the method comprises the following steps: Acquiring state information of the first temperature sensor under the condition that the heat pump system is in a first mode, wherein the state information comprises whether the heat pump system is in a failure state or not; Controlling the first throttling device to operate in an unthrottled state and/or the compressor to operate under the condition that the first temperature sensor is in a failure state so as to raise the temperature of the refrigerant flowing into the refrigerant heat dissipation module; Wherein in the first mode the first heat exchanger is in a condensed state and the second heat exchanger is in an evaporated state.
  2. 2. The method of claim 1, wherein the step of controlling the first throttling means to operate in an unthrottled state and/or the compressor to increase the temperature of the inflow refrigerant of the refrigerant heat rejection module in the event that the first temperature sensor is in a disabled state comprises: Controlling the first throttling device to operate in an unthrottled state under the condition that the first temperature sensor has hardware faults; Under the condition that the first temperature sensor hardware is abnormal in installation when normal, controlling the operation of the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module; Wherein the failure state includes the hardware failure or installation abnormality.
  3. 3. The method of claim 2, wherein prior to the step of controlling the operation of the compressor to raise the temperature of the incoming refrigerant of the refrigerant heat rejection module, further comprising: when the hardware of the first temperature sensor is normal, acquiring a first temperature detected by the first temperature sensor and a second temperature of the first heat exchanger within a preset time period after the compressor is started; Determining that the first temperature sensor has abnormal installation under the condition that the first temperature and the second temperature meet the loosening condition; wherein the release condition indicates that the first temperature sensor has a risk of deviating from a preset mounting position.
  4. 4. The method of claim 3, wherein the release condition comprises a deviation of the first temperature from a predetermined temperature less than or equal to a predetermined value and a temperature difference of the first temperature from the second temperature less than a predetermined temperature difference.
  5. 5. The method as set forth in claim 3, wherein said step of controlling said compressor to operate to raise the temperature of said refrigerant heat dissipation module flowing into the refrigerant in the event of an installation abnormality in said first temperature sensor hardware is normal, further comprises: and (3) a first preset time period is spaced, and the step of acquiring the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within the preset time period after the compressor is started is returned until the heat pump system determines that the first temperature sensor deviates from the preset installation position and outputs prompt information when the heat pump system meets the ending condition.
  6. 6. The method of claim 5, wherein the end condition comprises a number of times the release condition is met after the first mode is initiated being greater than or equal to a target number of times.
  7. 7. The method of claim 5, wherein after the step of controlling the operation of the compressor to raise the temperature of the inflow refrigerant of the refrigerant heat dissipation module in the case that the installation abnormality exists when the first temperature sensor hardware is normal, further comprising: Under the condition that a preset instruction is not received, executing the first preset time interval, and returning to executing the step of acquiring the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within the preset time interval after the compressor is started; Stopping the abnormal detection of the first temperature sensor when the preset instruction is received; the preset instructions comprise stop instructions of the compressor or start instructions of other modes except the first mode.
  8. 8. The method of claim 2, wherein the step of controlling the operation of the compressor to raise the temperature of the inflow refrigerant of the refrigerant heat dissipation module comprises: And controlling the compressor to stop.
  9. 9. The method according to any one of claims 1 to 8, wherein the environment in which the first heat exchanger is located is provided with a second temperature sensor, and the step of acquiring the state information of the first temperature sensor further comprises: and under the condition that the first temperature sensor has hardware faults, controlling the first throttling device to operate in an unthrottled state, and controlling the operating frequency of the compressor according to the fault state of the second temperature sensor.
  10. 10. The method of claim 9, wherein the step of controlling the operating frequency of the compressor according to the fault condition of the second temperature sensor comprises: Controlling the compressor to operate at a first target frequency in the event of a failure of the second temperature sensor; Controlling the compressor to operate at a second target frequency in the absence of a fault in the second temperature sensor; Wherein the first target frequency is less than the second target frequency.
  11. 11. The method of claim 9, wherein the first target frequency is a minimum operating frequency of the compressor, and wherein prior to the step of controlling the compressor to operate at a second target frequency, further comprising: Determining the second target frequency according to the ambient temperature detected by the second temperature sensor under the condition that the second temperature sensor has no fault; Wherein the second target frequency is inversely related to the ambient temperature.
  12. 12. The heat pump system is characterized by comprising a control device and a refrigerant circulation loop, wherein the refrigerant circulation loop comprises a compressor, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are sequentially connected, a first temperature sensor is arranged between the first throttling device and the refrigerant heat dissipation module, and the refrigerant heat dissipation module is arranged to exchange heat with a heating component; The first temperature sensor, the compressor and the first throttle device are all connected to the control device, which comprises a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program is configured to carry out the steps of the control method of the heat pump system according to any one of claims 1 to 11.
  13. 13. A storage medium, characterized in that the storage medium is a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the control method of the heat pump system according to any one of claims 1 to 11.

Description

Control method for heat pump system, and storage medium Technical Field The present application relates to the field of heat pump technologies, and in particular, to a control method of a heat pump system, and a storage medium. Background In a heat pump system such as an air conditioner, a refrigerant heat radiation component is arranged in a refrigerant loop to radiate heat of heating components such as an electric control. The heat pump system generally sets a temperature sensor between the throttling component and the refrigerant heat dissipation component to detect the temperature of the refrigerant heat dissipation component flowing into the throttling component after throttling to control the system to operate so as to avoid condensation of the heating component, however, when the temperature sensor fails, the condensation prevention control of the system fails, and the condition that the condensation of the heating component is caused by too low temperature of the refrigerant flowing into the refrigerant heat dissipation component is easy to occur, so that the operation reliability of the system is affected. Disclosure of Invention The application mainly aims to provide a control method of a heat pump system, the heat pump system and a storage medium, and aims to reduce the condensation risk of heating components and improve the operation reliability of the system. In order to achieve the above object, the present application provides a control method of a heat pump system, the heat pump system including a refrigerant circulation loop, the refrigerant circulation loop including a compressor, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence, wherein a first temperature sensor is disposed between the first throttling device and the refrigerant heat dissipation module, and the refrigerant heat dissipation module is configured to exchange heat with a heat generating component, the method includes: Acquiring state information of the first temperature sensor under the condition that the heat pump system is in a first mode, wherein the state information comprises whether the heat pump system is in a failure state or not; Controlling the first throttling device to operate in an unthrottled state and/or the compressor to operate under the condition that the first temperature sensor is in a failure state so as to raise the temperature of the refrigerant flowing into the refrigerant heat dissipation module; Wherein in the first mode the first heat exchanger is in a condensed state and the second heat exchanger is in an evaporated state. In an embodiment, when the first temperature sensor is in a failure state, the step of controlling the first throttling device to operate in an unthrottled state and/or the step of controlling the compressor to operate so as to raise the temperature of the refrigerant flowing into the refrigerant heat dissipation module includes: Controlling the first throttling device to operate in an unthrottled state under the condition that the first temperature sensor has hardware faults; Under the condition that the first temperature sensor hardware is abnormal in installation when normal, controlling the operation of the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module; Wherein the failure state includes the hardware failure or installation abnormality. In an embodiment, before the step of controlling the operation of the compressor to raise the temperature of the refrigerant flowing into the refrigerant heat dissipation module, the method further includes: when the hardware of the first temperature sensor is normal, acquiring a first temperature detected by the first temperature sensor and a second temperature of the first heat exchanger within a preset time period after the compressor is started; Determining that the first temperature sensor has abnormal installation under the condition that the first temperature and the second temperature meet the loosening condition; wherein the release condition indicates that the first temperature sensor has a risk of deviating from a preset mounting position. In an embodiment, the release condition includes that the deviation of the first temperature from a preset temperature is less than or equal to a preset value, and the temperature difference between the first temperature and the second temperature is less than a preset temperature difference. In an embodiment, after the step of controlling the operation of the compressor to raise the temperature of the refrigerant flowing into the refrigerant by the refrigerant heat dissipation module under the condition that the installation abnormality exists when the first temperature sensor hardware is normal, the method further includes: and (3) a first preset time period is spaced, and the step of acquiring the first temperature detected by the first tem