Title:
FLOW ADJUSTMENT ASSEMBLY AND ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/160709
Kind Code:
A1
Abstract:
A flow adjustment assembly and an electronic expansion valve. The flow adjustment assembly comprises a valve head (10) and a sealing gasket (20); the sealing gasket (20) is provided with a communication channel (201); the valve head (10) can move relative to the sealing gasket (20) to adjust a medium flow of the communication channel (201); the valve head (10) is provided with a sealing surface (11) and a first matching surface (12); the sealing gasket (20) is provided with a sealing matching surface (21) and a second matching surface (22); as the valve head (10) moves relative to the sealing gasket (20), a flow area between the sealing surface (11) and the second matching surface (22) can be adjusted to control the flow of the medium in the communication channel (201); moreover, under the driving of the valve head (10), the second matching surface (22) can extend into the communication channel (201) to guide the medium passing between the second matching surface (22) and the sealing surface (11). The surface-to-surface sealing between the valve head and the sealing gasket is implemented, and flow adjustment during a small flow of the flow adjustment assembly can be implemented by controlling the flow between the sealing surface and the second matching surface; meanwhile, the first matching surface has the functions of guiding the flow and reducing flow resistance, particularly reducing the flow resistance at a maximum degree of opening.
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Inventors:
HE YUCHEN (CN)
XU GUANJUN (CN)
KANG ZHIJUN (CN)
XU GUANJUN (CN)
KANG ZHIJUN (CN)
Application Number:
PCT/CN2023/078494
Publication Date:
August 31, 2023
Filing Date:
February 27, 2023
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/00; F16K1/38; F16K1/42; F16K1/54
Domestic Patent References:
| WO2018051150A1 | 2018-03-22 |
Foreign References:
| CN216789238U | 2022-06-21 | |||
| CN217177421U | 2022-08-12 | |||
| CN217301612U | 2022-08-26 | |||
| CN217381638U | 2022-09-06 | |||
| CN215110536U | 2021-12-10 | |||
| CN209430783U | 2019-09-24 | |||
| CN104051118A | 2014-09-17 | |||
| CN105276875A | 2016-01-27 | |||
| CN106439072A | 2017-02-22 | |||
| CN107304843A | 2017-10-31 | |||
| CN107542483A | 2018-01-05 | |||
| CN112503189A | 2021-03-16 | |||
| CN113833867A | 2021-12-24 | |||
| CN204739414U | 2015-11-04 | |||
| US20150114495A1 | 2015-04-30 |
Attorney, Agent or Firm:
KANGXIN PARTNERS , P.C. (CN)
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