Air conditioner and electronic expansion valve of air conditioner

Abstract

The invention further provides an electronic expansion valve. The electronic expansion valve comprises a valve element base and a valve needle. The valve element base is further provided with a valve opening. The valve needle comprises an adjusting part used for adjusting the movement of the valve needle and a throttling part used for adjusting flow of the valve opening. The throttling part is arranged in a circular truncated cone shape, and the diameter of the end, close to the adjusting part, of the throttling part is larger than the diameter of the end, away from the adjusting part, of the throttling part. Through the movement of the throttling part in the circular truncated cone shape in the valve opening, flow adjustment on the electronic expansion valve is achieved, the problem that a current electronic expansion valve cannot meet the requirements for large flow and proper flow of a refrigerant is effectively solved, and the electronic expansion valve can provide the ultra-large-flow refrigerant behind a turning point through the throttling part; and the proper flow of the refrigerant can be provided before the turning point through the throttling part, the using performance of the electronic expansion valve is improved, and running reliability of an air conditioner is guaranteed accordingly. The invention further provides the air conditioner.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and an electronic expansion valve thereof. Background technique [0002] At present, in the cooling overload state of the air conditioner, the flow rate of the electronic expansion valve can be increased to increase the subcooling degree and reduce the pipe temperature, so that the air conditioner can continue to work and ensure a good cooling effect, playing the role of an unloading valve. In the heating and defrosting state of the air conditioner, the defrosting effect can be improved by increasing the flow rate of the electronic expansion valve. Therefore, both the refrigeration overload state and the heating defrost state of the air conditioner require the electronic expansion valve to be fully open under special working conditions to provide a large flow rate, and at the same time provide a suitable flow rate during normal cooling and heating to e...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to solve the problem that the current electronic expansion valve cannot meet the large flow rate required by the cooling overload state and the heating defrost state and the appropriate flow rate required by normal cooling and heating, and provide an electronic expansion valve that can be used during the cooling process. An electronic expansion valve that provides a super-large flow of refrigerant in the load state and heating and defrosting state, and a normal flow of refrigerant in normal cooling and heating

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