Title:
MANUFACTURE OF TEMPERATURE EXPANSION VALVE
Document Type and Number:
Japanese Patent JP3219841
Kind Code:
B2
Abstract:
PURPOSE: To obtain the manufacturing method of a temperature expansion valve, having a diaphragm capable of enduring sufficiently against a stress even when the repeated stress is applied on the diaphragm.
CONSTITUTION: A temperature expansion valve is manufactured by a method wherein an opening and a cylindrical rise-up unit 25 are provided at the central part of a diaphragm 20 upon integrating the diaphragm 20, constituting the power element unit of the temperature expansion valve, with a temperature sensitive responding member 17 while a flange unit 17a is provided at the tip end of the temperature sensitive responding member 17 and a projected unit B, equipped with a releasing groove 17b, is provided at the center of the flange unit 17a across the whole circumference of the same. A reinforcing member 26 is fitted to the outer periphery of the rise-up unit 25 of the diaphragm 20 and is fixed by upper and lower electrodes with a pressure so that the reinforcing member 26 becomes concentric with the projected unit B, then, electric current is conducted between the electrodes to weld them.
Inventors:
Kimimichi Yano
Kazuhiko Watanabe
Tetsuro Ikoma
Takashi Okayama
Kazuhiko Watanabe
Tetsuro Ikoma
Takashi Okayama
Application Number:
JP12349992A
Publication Date:
October 15, 2001
Filing Date:
May 15, 1992
Export Citation:
Assignee:
Fuji Koki Co., Ltd.
International Classes:
F25B41/06; G05D16/06; G05D23/12; (IPC1-7): F25B41/06
Domestic Patent References:
| JP2171565A | ||||
| JP4840850A | ||||
| JP5203292A | ||||
| JP1179871A | ||||
| JP62171867U | ||||
| JP6280163U | ||||
| JP6219575U | ||||
| JP61192271U |
Attorney, Agent or Firm:
Yoshiaki Numagata (3 outside)