CN-122015323-A - Control method for heat pump system, and storage medium

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 method comprises the steps of controlling the heat pump system to operate in a first mode and acquiring temperature information of a heat exchanger in the heat pump system; and controlling the compressor to stop under the condition that the temperature information of the heat exchanger meets the set condition indicating that the reversing assembly has fault risk, wherein the first mode is set to be that the reversing assembly is in a first state and the first throttling device is in a throttling state, and the reversing assembly conducts the exhaust port and the second heat exchanger and conducts the air return port and the first heat exchanger in the first state. 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 (10)

1. 1. The control method of the heat pump system is characterized in that the heat pump system comprises a compressor, a reversing assembly, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are sequentially connected, wherein the refrigerant heat dissipation module is used for dissipating heat of a heating component, an exhaust port of the compressor, a return port of the compressor, the first heat exchanger and the second heat exchanger are all connected with the reversing assembly, and the method comprises the following steps: controlling the heat pump system to operate in a first mode, and acquiring temperature information of a heat exchanger in the heat pump system; Controlling the compressor to stop under the condition that the temperature information of the heat exchanger meets the set condition indicating that the reversing assembly has fault risk; the first mode is set in a first state of the reversing assembly and a throttling state of the first throttling device, and the reversing assembly conducts the exhaust port and the second heat exchanger and conducts the return port and the first heat exchanger in the first state.
2. 2. The method of claim 1, wherein the heat exchanger temperature information includes heat exchanger temperature variation values before and after the compressor is started, and/or the heat exchanger temperature information includes a reference temperature difference between a current temperature of a heat exchanger and a corresponding ambient temperature; The setting condition comprises that the temperature change value of the heat exchanger is larger than a preset temperature change value and/or the reference temperature difference is larger than a corresponding preset temperature difference.
3. 3. The method of claim 2, wherein the heat exchanger temperature change value comprises a temperature change value of the second heat exchanger before and after the compressor is started, the reference temperature difference comprises a first difference value and/or a second difference value, the first difference value is a difference value between a current ambient temperature of an environment in which the second heat exchanger is located and a current temperature of the second heat exchanger, and the second difference value is a difference value between the current temperature of the first heat exchanger and the ambient temperature of the environment in which the first heat exchanger is located before the compressor is started; the setting conditions include that the temperature change value of the second heat exchanger before and after the start of the compressor is larger than a preset temperature change value and the first difference value is larger than a corresponding preset temperature difference, and/or the second difference value is larger than a corresponding preset temperature difference.
4. 4. The method of claim 1, wherein said step of controlling said compressor shutdown, in the event said heat exchanger temperature information meets a set condition indicative of a risk of failure of said reversing assembly, further comprises: and returning to execute the first mode for controlling the heat pump system to operate at intervals of preset duration, and acquiring temperature information of a heat exchanger in the heat pump system until a reversing fault of the reversing component is determined and prompt information is output when a fault judging condition is met.
5. 5. The method of claim 4, wherein the failure determination condition includes a number of times that the heat exchanger temperature information satisfies a set condition after the first mode is started being greater than or equal to a target number of times.
6. 6. The method of claim 5, wherein the heat exchanger temperature information includes a temperature change value of the second heat exchanger before and after the compressor is started, a first difference value, and a second difference value, the first difference value being a difference between a current ambient temperature of an environment in which the second heat exchanger is located and a current temperature of the second heat exchanger, the second difference value being a difference between the current temperature of the first heat exchanger and the ambient temperature of the environment in which the first heat exchanger is located before the compressor is started, the method further comprising: and determining the target times according to the temperature change value of the second heat exchanger, the first difference value and the second difference value.
7. 7. The method of claim 4, wherein said step of controlling said compressor shutdown, in the event said heat exchanger temperature information meets a set condition indicative of a risk of failure of said reversing assembly, further comprises: Returning to execute the first mode of controlling the heat pump system to operate at intervals of preset time length under the condition that a preset instruction is not received, and acquiring temperature information of a heat exchanger in the heat pump system until a failure judgment condition is met, determining that a reversing failure exists in the reversing component and outputting prompt information; under the condition that the preset instruction is received, stopping fault detection of the reversing component; The preset instruction comprises a stop instruction of the compressor or a start instruction of a second mode, the second mode is set to be that the reversing assembly is in a second state and the first throttling device is in an unthrottled state, and the reversing assembly conducts the exhaust port and the first heat exchanger and conducts the air return port and the second heat exchanger in the second state.
8. 8. The method of any one of claims 1 to 7, wherein the first throttling means comprises an electronic expansion valve, and wherein after the step of controlling the heat pump system to operate in the first mode, further comprising: executing the step of acquiring the temperature information of the heat exchanger in the heat pump system when the heat pump system does not meet the starting condition of the defrosting mode; when the heat pump system meets the starting condition of the defrosting mode, controlling the electronic expansion valve to increase the opening degree to operate; Wherein the defrosting mode is set to defrost the first heat exchanger.
9. 9. The heat pump system is characterized by comprising a control device, a compressor, a reversing assembly, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are sequentially connected, wherein the refrigerant heat dissipation module is used for dissipating heat of a heating component, and an exhaust port of the compressor, a return port of the compressor, the first heat exchanger and the second heat exchanger are all connected with the reversing assembly; The reversing assembly and the compressor are both 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 8.
10. 10. 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 8.

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 Many heat pump systems are provided with a refrigerant heat dissipation module in a refrigerant flow path to dissipate heat of heating components in the electric control assembly and other systems. In the heat pump system provided with reversing components such as a four-way valve, the reversing components need to operate according to the corresponding state of the required operation mode, and a throttling part on one side of the refrigerant heat dissipation module, which flows out of the refrigerant, can be in a throttling state, so that the system can achieve the required heat exchange state. However, when the reversing component fails, the flow direction and the demand of the refrigerant in the system are different, which can cause that the throttling component which is needed to throttle at the outflow side of the refrigerant heat dissipation module is changed into the throttling component at the inflow side of the refrigerant heat dissipation module, so that the temperature of the refrigerant heat dissipation module is easily caused to be too low, the heating component is condensed, and 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 compressor, a reversing assembly, and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger that are sequentially connected, wherein the refrigerant heat dissipation module is configured to dissipate heat of a heat generating component, and an exhaust port of the compressor, a return port of the compressor, the first heat exchanger, and the second heat exchanger are all connected with the reversing assembly, the method includes: controlling the heat pump system to operate in a first mode, and acquiring temperature information of a heat exchanger in the heat pump system; Controlling the compressor to stop under the condition that the temperature information of the heat exchanger meets the set condition indicating that the reversing assembly has fault risk; the first mode is set in a first state of the reversing assembly and a throttling state of the first throttling device, and the reversing assembly conducts the exhaust port and the second heat exchanger and conducts the return port and the first heat exchanger in the first state. In an embodiment, the heat exchanger temperature information includes a heat exchanger temperature change value before and after the compressor is started, and/or the heat exchanger temperature information includes a reference temperature difference between a current temperature of a heat exchanger and a corresponding ambient temperature; The setting condition comprises that the temperature change value of the heat exchanger is larger than a preset temperature change value and/or the reference temperature difference is larger than a corresponding preset temperature difference. In an embodiment, the heat exchanger temperature change value includes a temperature change value of the second heat exchanger before and after the compressor is started, the reference temperature difference includes a first difference value and/or a second difference value, the first difference value is a difference value between a current environmental temperature of an environment where the second heat exchanger is located and a current temperature of the second heat exchanger, and the second difference value is a difference value between the current temperature of the first heat exchanger and the environmental temperature of the environment where the first heat exchanger is located before the compressor is started; the setting conditions include that the temperature change value of the second heat exchanger before and after the start of the compressor is larger than a preset temperature change value and the first difference value is larger than a corresponding preset temperature difference, and/or the second difference value is larger than a corresponding preset temperature difference. In an embodiment, after the step of controlling the compressor to stop, if the heat exchanger temperature information meets a set condition indicating that the reversing assembly is at risk of failure, the method further includes: and returning to execute the first mode for controlling the heat pump system to operate at intervals of preset duration, and acquiring temperature information o