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Patent Searching and Data


Title:
ELECTRONIC EXPANSION VALVE AND COOLING/HEATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/124940
Kind Code:
A1
Abstract:
The present invention relates to an electronic expansion valve and a cooling/heating system. According to an example, proposed is an electronic expansion valve comprising: a body housing having a first port; an operation assembly installed inside the body housing, the operation assembly comprising an operation housing having a guide hole, a rotation driving portion, and an elevating rod which receives rotation power from the rotation driving portion and accordingly moves upward/downward without rotating so as to penetrate the guide hole; and a replaceable orifice unit installed on the lower portion of the operation assembly such that the same can be replaced through the lower end of the body housing, the replaceable orifice unit comprising an orifice housing which exposes an orifice hole and an orifice set which opens/closes the orifice hole inside the orifice housing according to downward and upward movements of the elevating rod such that an expansion valve function is performed, wherein the operation housing has an upward/downward movement constraint space formed in the upper portion of the guide hole, and the operation assembly further comprises an upward movement limit adjusting element installed in the upward/downward movement constraint space so as to adjust the upward movement limiting height of the elevating rod.

Inventors:
LEE, Chong-chun (#2-201, Cheonil Villa298-6, Baekseokdong-gil,Jongno-gu, Seoul, 03020, KR)
LEE, Sang Bong (#402, Pullhouse15-7, Godonggolro 4beon-gil,Nam-gu, Busan, 48419, KR)
Application Number:
KR2018/016141
Publication Date:
June 27, 2019
Filing Date:
December 18, 2018
Export Citation:
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Assignee:
KEEHA PRECISION CO., LTD. (#16, Mieumsandan-ro 92beon-gilGangseo-gu, Busan, 46748, KR)
International Classes:
F25B41/06; F16K1/34; F16K31/04
Foreign References:
KR20170126673A2017-11-20
JP2551705B21996-11-06
KR20130125546A2013-11-19
KR20170088608A2017-08-02
KR20050005836A2005-01-15
Attorney, Agent or Firm:
KO, Kwang-Hoon (5F Ok-shin Tower, 117 Dogok-ro,Gangnam-gu, Seoul, 06253, KR)
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