The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Mar. 10, 2011
Yasutaka Sanuki, Yokkaichi, JP;
Yukihiro Takano, Fujimi, JP;
Naoki Inoshita, Yokkaichi, JP;
Koji Takiguchi, Kounosu, JP;
Shusuke Saito, Yokohama, JP;
Nobutoshi Migishima, Fukaya, JP;
Yasutaka Sanuki, Yokkaichi, JP;
Yukihiro Takano, Fujimi, JP;
Naoki Inoshita, Yokkaichi, JP;
Koji Takiguchi, Kounosu, JP;
Shusuke Saito, Yokohama, JP;
Nobutoshi Migishima, Fukaya, JP;
Fuji Electric Co., Ltd., Kawasaki-Shi, JP;
Abstract
An electronic expansion valve () includes a small hole () that expands a refrigerant, a valve body () that opens and closes the small hole, an elastic member () that urges the valve body to close the small hole, and a solenoid () that suctions the valve body to open the small hole, and expands the refrigerant by opening and closing the valve body. The elastic member is a disc spring in which a plurality of slits () formed in a spiral form is provided at mutually equal pitches on the perimeter. Therefore, there is no need for a guide, the occurrence of sludge due to sliding is suppressed, and the electronic expansion valve operates stably over a long period.