Title:
VALVE NEEDLE OF ELECTRONIC EXPANSION VALVE, AND ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2021/043237
Kind Code:
A1
Abstract:
Provided are a valve needle (301) of an electronic expansion valve, and an electronic expansion valve. The valve needle (301) comprises a valve needle head, and the valve needle head is adapted to be fitted with a valve hole (402) at a valve seat (401) of an electronic expansion valve in order to close and open the valve hole (402), so as to adjust the valve opening of the electronic expansion valve. The electronic expansion valve is provided with at least a first opening region and a second opening region, wherein the valve opening of the first opening region is smaller than the valve opening of the second opening region. The external shape of the valve needle head is configured such that, during the operation process of the electronic expansion valve, the valve needle (301) can control the valve opening, thus realizing that when the valve opening is in the first opening region, the slope of a corresponding flow characteristic curve (c) is smaller than the slope of a corresponding flow characteristic curve (c) when the valve opening is in the second opening region.
Inventors:
ZHU YANXIN (CN)
ZHOU LEI (CN)
ZHOU LEI (CN)
Application Number:
PCT/CN2020/113383
Publication Date:
March 11, 2021
Filing Date:
September 04, 2020
Export Citation:
Assignee:
EMERSON CLIMATE TECH SUZHOU CO LTD (CN)
International Classes:
F16K1/38; F25B41/34
Foreign References:
| CN211117686U | 2020-07-28 | |||
| JP2015072119A | 2015-04-16 | |||
| CN104806774A | 2015-07-29 | |||
| CN202708102U | 2013-01-30 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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