CN-122015325-A - Heat pump system, control method for heat pump system, electric appliance and storage medium

CN122015325ACN 122015325 ACN122015325 ACN 122015325ACN-122015325-A

Abstract

The application discloses a heat pump system, a control method of the heat pump system, an electric appliance and a storage medium, and relates to the technical field of electric appliances, wherein the heat pump system comprises a refrigerant circulation loop, the refrigerant circulation loop comprises a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are sequentially connected, and the refrigerant heat dissipation module is arranged to dissipate heat from a heating component; the first throttling device comprises a refrigerant switching assembly, a throttling branch and a bypass branch, wherein the throttling branch and the bypass branch are connected with the refrigerant switching assembly, the refrigerant switching assembly is used for switching the flow direction of a refrigerant between the throttling branch and the bypass branch, and the refrigerant switching assembly is used for controlling the refrigerant to flow through the bypass branch when the heating component has a condensation risk and controlling the refrigerant to flow through the throttling branch when the heating component does not have the condensation risk. 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. The heat pump system is characterized by comprising a refrigerant circulation loop, wherein the refrigerant circulation loop comprises a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are sequentially connected, and the refrigerant heat dissipation module is arranged to dissipate heat with a heating component; The first throttling device comprises a refrigerant switching assembly, a throttling branch and a bypass branch, wherein the throttling branch and the bypass branch are connected with the refrigerant switching assembly, and the refrigerant switching assembly is used for switching the flow direction of the refrigerant between the throttling branch and the bypass branch; The refrigerant switching assembly is arranged to control the refrigerant to flow through the bypass branch when the heating component has a condensation risk, and to control the refrigerant to flow through the throttling branch when the heating component does not have the condensation risk.
2. The heat pump system of claim 1, wherein the refrigerant switching assembly comprises a three-way valve; The first heat exchanger, the first end of the throttling branch and the first end of the bypass branch are respectively communicated with different valve ports of the three-way valve, and the second end of the throttling branch and the second end of the bypass branch are respectively communicated with the refrigerant heat dissipation module.
3. A heat pump system according to claim 1 or 2, wherein a throttle member having a fixed throttle area is provided on the throttle leg.
4. A control method of a heat pump system, characterized by being applied to the heat pump system according to any one of claims 1 to 3, the method comprising: Acquiring a state parameter representing the condensation risk of the heating component; Controlling the refrigerant switching assembly to operate so that the refrigerant flows through the bypass branch under the condition that the state parameter meets the preset condition; Controlling the refrigerant switching assembly to operate so that the refrigerant flows through the throttling branch under the condition that the state parameter does not meet the preset condition; Wherein the preset condition indicates that the heating component is at risk of condensation.
5. The method of claim 4, wherein prior to the step of obtaining a status parameter indicative of risk of condensation of the heat generating component, further comprising controlling the heat pump system to operate in a preset mode in which the first heat exchanger is in a condensed state and the second heat exchanger is in an evaporated state; The state parameters comprise a first ambient temperature of an environment where the heat pump system is located and a first refrigerant temperature of a refrigerant flowing into the refrigerant heat dissipation module, and the preset conditions comprise that a first temperature difference value between the first ambient temperature and the first refrigerant temperature is larger than a first preset temperature difference.
6. The method of claim 4, wherein the step of controlling the refrigerant switching assembly to operate to flow refrigerant through the bypass branch comprises: Controlling the three-way valve to operate at a second valve position so as to enable the first heat exchanger, the bypass branch and the refrigerant heat dissipation module to be communicated in sequence; The step of controlling the refrigerant switching assembly to operate so that the refrigerant flows through the throttling branch circuit comprises the following steps: And controlling the three-way valve to operate at a first valve position so that the first heat exchanger, the throttling branch and the refrigerant heat dissipation module are sequentially communicated.
7. The method of any one of claims 4 to 6, wherein prior to the step of obtaining a status parameter indicative of a risk of condensation of the heat generating component, further comprising: receiving a starting instruction of a preset mode, and acquiring a second environment temperature of the environment where the heat pump system is located; Controlling the operation of the refrigerant switching assembly according to the second ambient temperature, and controlling the heat pump system to start the preset mode; The first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state in the preset mode.
8. The method of claim 7, wherein said step of controlling operation of said refrigerant switching assembly based on said second ambient temperature comprises: When the second ambient temperature is smaller than a preset ambient temperature, controlling the refrigerant switching assembly to operate so that the refrigerant flows through the bypass branch, and controlling the heat pump to start the preset mode; and under the condition that the second ambient temperature is greater than or equal to the preset ambient temperature, controlling the refrigerant switching assembly to operate so that the refrigerant flows through the throttling branch, and controlling the heat pump system to start the preset mode.
9. An appliance comprising a control device and a heat pump system according to any one of claims 1 to 3; The heat pump system is 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 4 to 8.
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 4 to 8.

Description

Heat pump system, control method for heat pump system, electric appliance and storage medium Technical Field The present application relates to the field of electrical appliances, and in particular, to a heat pump system, a control method of the heat pump system, an electrical appliance, 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. When the front end of the refrigerant heat radiation module is provided with the throttling component, the heating component is easily condensed when the temperature of the refrigerant throttled by the throttling component is too low, and the operation reliability of the system is affected. Disclosure of Invention The application mainly aims to provide a heat pump system, a control method of the heat pump system, an electric appliance 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 heat pump system, which includes a refrigerant circulation loop, wherein the refrigerant circulation loop includes a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger, which are sequentially connected, and the refrigerant heat dissipation module is configured to dissipate heat from a heat generating component; The first throttling device comprises a refrigerant switching assembly, a throttling branch and a bypass branch, wherein the throttling branch and the bypass branch are connected with the refrigerant switching assembly, and the refrigerant switching assembly is used for switching the flow direction of the refrigerant between the throttling branch and the bypass branch; The refrigerant switching assembly is arranged to control the refrigerant to flow through the bypass branch when the heating component has a condensation risk, and to control the refrigerant to flow through the throttling branch when the heating component does not have the condensation risk. In one embodiment, the refrigerant switching assembly includes a three-way valve; The first heat exchanger, the first end of the throttling branch and the first end of the bypass branch are respectively communicated with different valve ports of the three-way valve, and the second end of the throttling branch and the second end of the bypass branch are respectively communicated with the refrigerant heat dissipation module. In one embodiment, a throttling component with a fixed throttling area is arranged on the throttling branch. In addition, to achieve the above object, the present application also proposes a control method of a heat pump system, applied to the heat pump system as described in any one of the above, the method comprising: Acquiring a state parameter representing the condensation risk of the heating component; Controlling the refrigerant switching assembly to operate so that the refrigerant flows through the bypass branch under the condition that the state parameter meets the preset condition; Controlling the refrigerant switching assembly to operate so that the refrigerant flows through the throttling branch under the condition that the state parameter does not meet the preset condition; Wherein the preset condition indicates that the heating component is at risk of condensation. In an embodiment, before the step of obtaining the state parameter indicating the condensation risk of the heat generating component, the method further comprises controlling the heat pump system to operate in a preset mode in which the first heat exchanger is in a condensed state and the second heat exchanger is in an evaporated state; The state parameters comprise a first ambient temperature of an environment where the heat pump system is located and a first refrigerant temperature of a refrigerant flowing into the refrigerant heat dissipation module, and the preset conditions comprise that a first temperature difference value between the first ambient temperature and the first refrigerant temperature is larger than a first preset temperature difference. In an embodiment, in the heat pump system as described above, the step of controlling the refrigerant switching assembly to operate so that the refrigerant flows through the bypass branch includes: Controlling the three-way valve to operate at a second valve position so as to enable the first heat exchanger, the bypass branch and the refrigerant heat dissipation module to be communicated in sequence; The step of controlling the refrigerant switching assembly to operate so that the refrigerant flows through the throttling branch circuit comprises the following steps: And controlling the three-way valve to operate at a first valve position so that the first heat exchanger, the throttling branch a