ELECTRONIC EXPANSION VALVE

WIPO Patent Application WO/2023/051825

A1

Provided in the present application is an electronic expansion valve, comprising: a valve body, which is provided with an accommodating cavity and a valve port, the accommodating cavity being in communication with the valve port; a rotor, which is arranged in the accommodating cavity; a stator assembly, which is sleeved outside the valve body, the stator assembly being arranged corresponding to the rotor; a screw rod assembly, which is arranged in the accommodating cavity, wherein the screw rod assembly comprises a screw rod and a nut sleeve, the nut sleeve being fixed onto the valve body, the screw rod passing through the nut sleeve and being in threaded connection with the nut sleeve, and the rotor being fixedly connected to the end of the screw rod away from the valve port; and a valve sleeve, which is in driving connection with the screw rod, the valve sleeve being used to block or open the valve port. When the valve port is in a fully open state, the number of pulses is A; and when the central line of the stator assembly that is perpendicular to an axis coincides with the central line of the rotor that is perpendicular to the axis, the corresponding number of pulses is B, wherein 0.3*A ≤ B ≤ 0.7*A. By using the present solution, the problem of a weak driving force of an electronic expansion valve is solved.

HE YUCHEN (CN)
XU GUANJUN (CN)
CHEN YONGHAO (CN)
HUANG HONGFENG (CN)

PCT/CN2022/123584

April 06, 2023

September 30, 2022

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ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)

F16K31/04; F16K1/36

CN216200581U	2022-04-05
CN210372066U	2020-04-21
JP2019124318A	2019-07-25
CN1297518A	2001-05-30
CN111271475A	2020-06-12
US20210071921A1	2021-03-11

KANGXIN PARTNERS, P.C. (CN)

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