Valve core device

Abstract

The invention discloses a valve core device which comprises a valve core seat provided with a valve cavity, as well as a valve core (1) and an elastic part (2) which are arranged in the valve cavity, wherein a valve port (31) matched with the valve core (1) is arranged on the valve core seat; one end, opposite to the valve port (31), of the valve core (1) is matched with the elastic part (2); the valve core seat is of a split structure; the valve core seat comprises a body seat (3) and a support seat (4); and the valve port (31) is arranged on the body seat (3), and the elastic part (2) is supported on the support seat (4). On the one hand, the valve core device provided by the invention has the advantages of reducing the assembly difficulty, thereby improving the assembly efficiency and assembly quality; and on the other hand, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of refrigeration control, relates to a valve core device, in particular to a valve core device used for an expansion valve. Background technique [0002] Thermal expansion valves are mainly used in systems such as air conditioners, refrigerators, and heat pumps to play the role of throttling and reducing pressure and regulating the flow of refrigerant. In the replaceable core type thermal expansion valve, the main part of the valve is common, and only the replaceable valve core device at the inlet of the valve and its matching filter assembly can be replaced according to the capacity requirement. Therefore, the valve with this structure has many advantages, such as maintenance Easy to replace, easy to match capacity, etc. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a typical valve core device in the prior art. [0004] The spool device in the prior art includes a ...

AI Technical Summary

Problems solved by technology

This structure is difficult to assemble, the assembly efficiency is low, and the assembly quality is low

[0007] Second, in order to provide an inward step 3'2 at the bottom of the valve core seat 3', the material of the valve core seat 3' needs to be made of softer brass; when the valve is closed, the valve core 3' will meet the 3'1 collided, and the service life of the valve core seat 3' and the adjustment accuracy after long-term use were affected due to the poor wear resistance of brass

[0008] Third, when the valve core 1' moves up and down in the valve cavity, radial vibration will occur, which will affect the coaxiality of the valve core 1' and the valve port 3'1, thus causing the seal between the two when the valve is closed Poor sex

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