VALVE NEEDLE ASSEMBLY, ELECTRONIC EXPANSION VALVE AND REFRIGERATION APPARATUS

Title:

VALVE NEEDLE ASSEMBLY, ELECTRONIC EXPANSION VALVE AND REFRIGERATION APPARATUS

Document Type and Number:

WIPO Patent Application WO/2022/127265

Kind Code:

A1

Abstract:

A valve needle assembly, an electronic expansion valve and a refrigeration apparatus. The valve needle assembly comprises a valve needle sleeve (120), a valve rod (110), a valve needle (150), a buffer sliding block (140) and a buffer spring (130), wherein the valve needle sleeve (120) is provided with a first open end (121) and a second open end (123), which are opposite each other; the valve rod (110) is provided with a driving end, and the driving end of the valve rod (110) is movably fitted with the valve needle sleeve (120) via the first open end (121) so as to drive the valve needle (150) to act; the valve needle (150) is mounted at the second open end (123) of the valve needle sleeve (120); the buffer sliding block (140) is disposed inside the valve needle sleeve (120), and the buffer sliding block (140) abuts against the valve needle (150); and the buffer spring (130) is disposed inside the valve needle sleeve (120), and the driving end of the valve rod (110) is connected to the buffer sliding block (140) by means of the buffer spring (130).

Inventors:

YANG MAO (CN)
HUANG LONGHUA (CN)
CHEN CHAO (CN)
JIANG BO (CN)

Application Number:

PCT/CN2021/120610

Publication Date:

June 23, 2022

Filing Date:

September 26, 2021

Export Citation:

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Assignee:

GUANGDONG WELLING MOTOR MFG CO (CN)

International Classes:

F16K1/48; F16K31/02; F16K31/50

Domestic Patent References:

WO2013103061A1

2013-07-11

Foreign References:

CN112696499A	2021-04-23
CN214171340U	2021-09-10
CN202149235U	2012-02-22
CN207864635U	2018-09-14
CN209012516U	2019-06-21
CN208634406U	2019-03-22

Other References: