Title:
GAS APPARATUS WITH LATCH TYPE SOLENOID VALVE
Document Type and Number:
Japanese Patent JP3312354
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To keep a latch type solenoid valve from being opened even under the striking of a piezo-electric element with a hammer by accomplishing the control of electric energization to move a plunger in the direction of opening the valve when the piezo-electric element is struck by the hammer.
SOLUTION: An electromagnetic type safety valve 4 is interposed in a gas supply path 11 and an ignition plug 13 connected to a piezo-electric element 23 is mounted near a burner 1. A microswitch 21 is turned on in response to an operation of ignition and a controller 5 detects the operation of ignition. A latch type solenoid valve 3 is electrically energized in the direction of moving a plunger to the position of opening the valve. At the moment of electric energization, the latch type solenoid valve remains unchanged if opened. When made for ignition, the electric energization is continued for about two second. As a result, even when the piezo-electric element is struck by the hammer 22 to generate vibration, the vibration occurs during the continuation of the electric energization. During the period, the plunger is attracted by a magnetic force of a permanent magnet or the like, thereby keeping the valve open.
More Like This:
| WO/1998/051946 | SOLENOID VALVE |
Inventors:
Hideki Tani
Application Number:
JP10773197A
Publication Date:
August 05, 2002
Filing Date:
April 24, 1997
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
F16K31/06; F23N1/00; F23N5/20; F23N5/24; (IPC1-7): F23N5/24; F16K31/06
Domestic Patent References:
| JP61225512A | ||||
| JP61223429A | ||||
| JP1299383A |
Attorney, Agent or Firm:
Kinichi Kitamura (2 others)