CN-121993926-A - Cooling method and device for electric control board of heat pump system, electronic equipment and heat pump system

Abstract

The embodiment of the invention provides a cooling method and device for an electric control board of a heat pump system, electronic equipment and the heat pump system, and relates to the technical field of heat pump systems. The method comprises the step of acquiring an operation mode of the heat pump system when the heat pump system is in operation. And on the basis of the operation mode, respectively controlling the opening and closing of the heating expansion valve, the refrigerating expansion valve and the electromagnetic valves so as to cool the electric control plate. The invention can effectively cool the electric control board under different operation modes of the heat pump system.

Inventors

• CHEN JIALUN

Assignees

• 宁波奥克斯电气有限公司

Dates

Publication Date

20260508

Application Date

20260318

Claims (10)

1. 1. The heat pump system electric control plate cooling method is characterized by being applied to a controller of a heat pump system, wherein the heat pump system comprises a main road and a plurality of branches, a heating expansion valve, a refrigerating expansion valve, an evaporator, a condenser and a heat regenerator are arranged on the main road, the heat regenerator is arranged between the evaporator and the condenser, the heating expansion valve is arranged on the main road between the heat regenerator and the condenser, the refrigerating expansion valve is arranged on the main road between the heat regenerator and the evaporator, a first branch and a second branch are respectively arranged between the heating expansion valve and the refrigerating expansion valve, an inlet and an outlet of the first branch and an inlet of the second branch are respectively positioned on two sides of the heat regenerator, the electric control plate of the heat pump system is arranged on the first branch and the second branch, and the inlet and the outlet of the first branch and the inlet of the second branch are respectively provided with an electromagnetic valve, and the method comprises the following steps: Acquiring an operation mode of the heat pump system when the heat pump system is in operation; And on the basis of the operation mode, respectively controlling the opening and closing of the heating expansion valve, the refrigerating expansion valve and the electromagnetic valves so as to cool the electric control plate.
2. 2. The method of cooling an electric control plate of a heat pump system according to claim 1, wherein the operation mode includes a cooling mode, the solenoid valve includes a first heating solenoid valve, a second heating solenoid valve, a first cooling solenoid valve and a second cooling solenoid valve, the first heating solenoid valve is disposed at an inlet of the first branch, the second heating solenoid valve is disposed at an inlet of the second branch, the first heating solenoid valve and the second heating solenoid valve are disposed between the heating expansion valve and the regenerator, the first cooling solenoid valve is disposed at an outlet of the first branch, the second cooling solenoid valve is disposed at an outlet of the second branch, the first cooling solenoid valve and the second cooling solenoid valve are disposed between the cooling expansion valve and the regenerator, and the opening and closing of the heating expansion valve, the cooling expansion valve and each solenoid valve are controlled based on the operation mode, respectively, to cool the electric control plate, comprising: And if the operation mode is the refrigeration mode, controlling the heating expansion valve to be fully opened, opening the refrigeration expansion valve, closing the first heating electromagnetic valve and the second heating electromagnetic valve, and opening the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve so that the refrigerant flowing out of the heat regenerator cools the electric control plate through the first branch and the second branch.
3. 3. The method of cooling an electric control plate of a heat pump system of claim 2, wherein the first refrigeration solenoid valve is located between the second refrigeration solenoid valve and the regenerator, the heat pump system further comprises a third branch, a compressor, a refrigeration temperature sensor, and a bypass shutoff valve, the compressor is disposed between the condenser and the regenerator, an inlet of the third branch is located between the regenerator and the evaporator, an outlet of the third branch is located between the regenerator and the compressor, the bypass shutoff valve is disposed on the third branch, and the refrigeration temperature sensor is disposed between the regenerator and the first refrigeration solenoid valve, the method further comprising: Controlling the refrigeration temperature sensor to detect the temperature of a first refrigerant on a main path between the first refrigeration electromagnetic valve and the heat regenerator in real time; And if the temperature of the first refrigerant is lower than a first preset temperature, controlling the bypass stop valve to be opened.
4. 4. A heat pump system electric control plate cooling method as recited in claim 3, wherein after said controlling said bypass shutoff valve to open, said method further comprises: if the first refrigerant temperature is continuously lower than the first preset temperature within the first preset time period, closing the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve; And if the temperature of the first refrigerant is continuously higher than the second preset temperature within the second preset time period, re-opening the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve.
5. 5. The method of claim 1, wherein the operating mode includes a heating mode, the solenoid valve includes a first heating solenoid valve, a second heating solenoid valve, a first cooling solenoid valve and a second cooling solenoid valve, the first heating solenoid valve is disposed at an inlet of the first branch, the second heating solenoid valve is disposed at an inlet of the second branch, the first heating solenoid valve and the second heating solenoid valve are disposed between the heating expansion valve and the regenerator, the first cooling solenoid valve is disposed at an outlet of the first branch, the second cooling solenoid valve is disposed at an outlet of the second branch, the first cooling solenoid valve and the second cooling solenoid valve are disposed between the cooling expansion valve and the regenerator, and the opening and closing of the heating expansion valve, the cooling expansion valve and each solenoid valve are controlled based on the operating mode, respectively, to cool the electric control panel, comprising: And if the operation mode is the heating mode, controlling the refrigeration expansion valve to be fully opened, opening the heating expansion valve, closing the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve, and opening the first heating electromagnetic valve and the second heating electromagnetic valve so that the refrigerant flowing out of the heat regenerator cools the electric control board through the first branch and the second branch.
6. 6. The method of cooling an electric control plate of a heat pump system of claim 5, wherein the second heating solenoid valve is located between the first heating solenoid valve and the regenerator, the heat pump system further comprises a third branch, a compressor, a heating temperature sensor, and a bypass shut-off valve, the compressor is disposed between the condenser and the regenerator, an outlet of the third branch is located between the regenerator and the evaporator, an inlet of the third branch is located between the regenerator and the compressor, the bypass shut-off valve is disposed on the third branch, and the heating temperature sensor is disposed between the regenerator and the second heating solenoid valve, the method further comprising: controlling the heating temperature sensor to detect the temperature of a second refrigerant on a main path between the second heating electromagnetic valve and the heat regenerator in real time; And if the temperature of the second refrigerant is lower than a third preset temperature, controlling the bypass stop valve to be opened.
7. 7. The heat pump system electric control plate cooling method according to claim 6, wherein after said controlling said bypass cut-off valve to open, said method further comprises: if the second refrigerant temperature is continuously lower than the third preset temperature within the third preset time period, closing the first heating electromagnetic valve and the second heating electromagnetic valve; and if the second refrigerant temperature is continuously higher than the fourth preset temperature within the fourth preset time period, re-opening the first heating electromagnetic valve and the second heating electromagnetic valve.
8. 8. The utility model provides a heat pump system electric control board cooling device, its characterized in that is applied to heat pump system's controller, heat pump system includes main road and many branches, be provided with heating expansion valve, refrigeration expansion valve, evaporimeter, condenser and regenerator on the main road, the regenerator is located between evaporimeter and the condenser, heating expansion valve set up in the main road between regenerator and the condenser, refrigeration expansion valve set up in the main road between regenerator and the evaporimeter, be provided with first branch road and second branch road between heating expansion valve and refrigeration expansion valve respectively, first branch road with the access & exit of second branch road are located respectively the regenerator both sides, heat pump system's electric control board sets up in first branch road with on the second branch road, first branch road with the access & exit of second branch road is provided with an solenoid valve respectively: an operation mode acquisition unit configured to acquire an operation mode of the heat pump system when the heat pump system is operating; And the electric control board cooling unit is used for respectively controlling the opening and closing of the heating expansion valve, the refrigerating expansion valve and the electromagnetic valves based on the operation mode so as to cool the electric control board.
9. 9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 7 when the program is executed.
10. 10. A heat pump system, characterized in that it, when in operation, implements the steps of the method according to any one of claims 1-7.

Description

Cooling method and device for electric control board of heat pump system, electronic equipment and heat pump system Technical Field The invention relates to the technical field of heat pump systems, in particular to a cooling method and device for an electric control board of a heat pump system, electronic equipment and the heat pump system. Background The heat pump system is used as a high-efficiency electric energy driving technology, has remarkable efficiency, is widely applied to the field of building air conditioning systems in recent years, and particularly in northern areas of China, the heat pump technology has become one of main paths of low-temperature heating. The driving plate of the heat pump can gradually heat up in the use process, and particularly under the refrigeration condition, the overtemperature of each component in the electric control plate is easy to cause, and finally the driving plate is damaged, so that the unit is debugged and unbalanced in control. In the related art, the electric control box is not sealed, but air channels are reserved at the top and the bottom of the electric control box, and cooling is performed through convection, but dust and impurities can be led into the electric control box by the method, so that the running life of the unit is reduced, and even insects and mice enter the electric control box to damage the internal structure. The unit adopting the sealed electric control box only uses medium-temperature refrigerant to cool the electric control plate, and the cooling effect on the electric control box is poor because the temperature of the refrigerant liquid is still higher at the moment. Under the condition of high-temperature refrigeration, the electric control plate can not be cooled even due to the fact that the temperature of the refrigerant is too high. Disclosure of Invention The invention aims at providing a cooling method and device for an electric control board of a heat pump system, electronic equipment and the heat pump system, which can at least partially solve the technical problems. Embodiments of the invention may be implemented as follows: In a first aspect, an embodiment of the present invention provides a method for cooling an electric control board of a heat pump system, which is applied to a controller of a heat pump system, where the heat pump system includes a main circuit and a plurality of branches, a heating expansion valve, a refrigeration expansion valve, an evaporator, a condenser and a regenerator are disposed on the main circuit, the regenerator is located between the evaporator and the condenser, the heating expansion valve is disposed on the main circuit between the regenerator and the condenser, the refrigeration expansion valve is disposed on the main circuit between the regenerator and the evaporator, a first branch and a second branch are disposed between the heating expansion valve and the refrigeration expansion valve, an inlet and an outlet of the first branch and an inlet of the second branch are located on two sides of the regenerator, and an electric control board of the heat pump system is disposed on the first branch and the second branch, and the inlet and outlet of the first branch and the inlet of the second branch are respectively provided with an electromagnetic valve, the method includes: Acquiring an operation mode of the heat pump system when the heat pump system is in operation; And on the basis of the operation mode, respectively controlling the opening and closing of the heating expansion valve, the refrigerating expansion valve and the electromagnetic valves so as to cool the electric control plate. Optionally, the operation mode includes a refrigeration mode, the electromagnetic valve includes a first heating electromagnetic valve, a second heating electromagnetic valve, a first refrigeration electromagnetic valve and a second refrigeration electromagnetic valve, the first heating electromagnetic valve is disposed at an inlet of the first branch, the second heating electromagnetic valve is disposed at an inlet of the second branch, the first heating electromagnetic valve and the second heating electromagnetic valve are located between the heating expansion valve and the regenerator, the first refrigeration electromagnetic valve is disposed at an outlet of the first branch, the second refrigeration electromagnetic valve is disposed at an outlet of the second branch, the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve are located between the refrigeration expansion valve and the regenerator, and based on the operation mode, the opening and closing of the heating expansion valve, the refrigeration expansion valve and each electromagnetic valve are controlled to cool the electronic control board, respectively, including: And if the operation mode is the refrigeration mode, controlling the heating expansion valve to be fully opened, opening the refrigeration