Title:
EXPANSION VALVE WITH SOLENOID VALVE
Document Type and Number:
Japanese Patent JP3786518
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the size of a solenoid and to save power consumption thereof by providing a pilot hole on/off valve for driving a power element by sensing variation of low pressure refrigerant from an evaporator and another pilot hole on/off valve being driven through a solenoid and switching both valves.
SOLUTION: A power element 10 has a temperature-sensitive chamber 12 formed by partitioning a low pressure refrigerant channel 3 with a diaphragm 11 and senses the temperature of low pressure refrigerant. A pilot valve 27 moves through a rod 29 as the diaphragm 11 displaces. Another pilot valve 30 is disposed oppositely to an opening of a pilot hole 25 on the back face side of valve and fixed to the forward end of the movable core 41 of a solenoid 40. When a solenoid valve 42 is not conducting, a valve 5 is pressed against a valve seat 4 and a high pressure refrigerant channel 2 is kept in closed state. When the valve 42 is conducted, the core 41 is attracted to a fixed core 43 and the valve 30 is retracted and the opening on the back face side of valve is opened.
Inventors:
Hisashi Hirota
Application Number:
JP11312098A
Publication Date:
June 14, 2006
Filing Date:
April 23, 1998
Export Citation:
Assignee:
TAGC Inc.
International Classes:
F16K31/06; F25B41/06; (IPC1-7): F25B41/06; F16K31/06
Domestic Patent References:
| JP61191842A | ||||
| JP10073345A | ||||
| JP61076271U |
Attorney, Agent or Firm:
Kazuhiko Mitsui
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