Electronic expansion valve and its seat assembly, seat core

An electronic expansion valve and valve seat technology, applied in refrigeration components, lift valves, valve devices, etc., can solve problems such as leakage, seal wear, affecting the performance of electronic expansion valves, etc., to ensure tightness, increase along the way loss, The effect of preventing impurities from accumulating on the valve port seal
CN106763835BActive Publication Date: 2019-06-25ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CO LTD
Publication Date
2019-06-25

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Abstract

The invention discloses an electronic expansion valve, its valve seat assembly, and a valve seat core. A flow port is opened on the peripheral wall of the valve seat core. The flow port includes a large flow port section and a small flow port section. The large flow port The section is close to the top of the valve seat core, the small flow port section is close to the bottom end of the valve seat core, and the large flow port section and the small flow port section are staggered in the circumferential direction of the valve seat core set up. The structure of the valve seat core prevents the refrigerant and impurities from rushing into the valve port when the opening is small, avoids the accumulation of impurities in the sealing part of the valve port, keeps the sealing part of the valve port clean, and ensures the sealing when the valve port is closed. sex.
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Description

technical field

[0001] The invention relates to the technical field of fluid control components, in particular to an electronic expansion valve, a valve seat assembly and a valve seat core thereof. Background technique

[0002] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a typical electronic expansion valve.

[0003] Generally, the electronic expansion valve includes a casing 10 , a motor 20 , a gear assembly 30 , a valve stem assembly 40 and a valve seat assembly 50 .

[0004] The motor 20 is built in the casing 10, and the output shaft of the motor 20 is connected to the screw rod 60 through the gear assembly 30 supported on the gear seat. The screw rod 60 is connected with a nut 70 through threaded fit, and the nut 70 is connected to the valve stem assembly 40, wherein, The circumferential direction of the nut 70 is limited.

[0005] please combine figure 2 , figure 2 It is a structural schematic diagram of a valve seat assembly of ...

Claims

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