Execution assembly of electronic expansion valve

Abstract

The invention discloses an execution assembly of an electronic expansion valve. The execution assembly of the electronic expansion valve comprises a valve seat, a flange plate is arranged above the valve seat, and the upper part of the flange plate is connected with an isolation sleeve pipe; the execution assembly further comprises a valve column, a guide sleeve installed on the valve seat throughthe valve column, the guide sleeve is embedded in the valve seat through a middle hole of the flange plate; the execution assembly comprises an inner magnetic ring, and the inner magnetic ring is inserted into the valve column through a middle hole on the inner magnetic ring; the execution assembly comprises a rolling screw, which is embedded in a first column hole on the valve column, the rolling screw is fixed in the isolation sleeve pipe. Through the invention, the execution assembly has the characteristics of low cost, high flow control precision and low frictional resistance.

Description

technical field [0001] The invention relates to an executive assembly of an electronic expansion valve, in particular to an executive assembly with high flow control precision and small frictional resistance. Background technique [0002] The electronic expansion valve is an important part in the refrigeration / heating system, mainly used to regulate the flow of fluid. The structure of the executive components used in the electronic expansion valves currently on the market is basically the same, and they are all threaded and screw structures. Because there must be a certain gap between the thread and the screw, otherwise the electronic expansion valve will be stuck because the screw has no gap. At the same time, due to the axial gap between the threaded screws, the actuator assembly will jump up and down, which will further cause the flow of the fluid to be unstable. [0003] Secondly, since the threaded screw mechanism is in the process of rotation, if the surface of the t...

AI Technical Summary

Problems solved by technology

Since there must be a certain gap between the thread and the screw, otherwise the electronic expansion valve will be stuck because the threaded screw has no gap

At the same time, due to the axial gap between the threaded screws, the actuator will jump up and down, which will further cause the fluid flow to be unstable

[0003] Secondly, because the threaded screw mechanism is in the process of rotation, if the surface of the threaded screw is not smooth, the friction between the threaded screws will increase during the rotation.

If you want to improve the surface gloss of the threaded screw, you need to invest in precision processing equipment, which will lead to an increase in processing costs

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