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Patent Searching and Data


Title:
膨張弁
Document Type and Number:
Japanese Patent JP5892823
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an expansion valve capable of preventing generation of noise caused by rapid increase in a refrigerant flow rate at start without causing pressure loss of a high-pressure refrigerant flowing from a valve chamber to an orifice.SOLUTION: A valve body 10 of an expansion valve includes a valve chamber 40 communicating with an inlet passage of a refrigerant, and a valve element 50 is arranged within the valve chamber 40. The valve element 50 is operated by a power element 70. A valve element support member 150 supporting the valve element 50 is energized in a valve closing direction by a spring 53. A movable member 110 slidably stored within the valve chamber 40 energizes the valve element support member 150 in a valve opening direction until abutment to a stopper 130 by a pressing spring 120. When a pressure difference is generated between the valve chamber 40 and an outlet passage 22, the valve element 50 is lifted by a minute distance so that a small amount of a refrigerant passes through an orifice.

Inventors:
井上 靖
林 宏
Application Number:
JP2012069168A
Publication Date:
March 23, 2016
Filing Date:
March 26, 2012
Export Citation:
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Assignee:
株式会社不二工機
International Classes:
F25B41/06; F16K1/14
Domestic Patent References:
JP64028463A
JP2001116402A
JP2012047430A
JP3037372U
Foreign References:
US20090045264
Attorney, Agent or Firm:
特許業務法人第一国際特許事務所