Monitoring of gas flow

Details Monitoring of gas flow Monitoring of gas flow

1991-12-06

1993-12-21

Jones, Larry

Stoves and furnaces

Stoves

Cooking

126 39R, 137392, 431 73, F24C 300

Patent

active

052713750

ABSTRACT:
A gas flow detection device having an inlet for connection to a source of gas and an outlet for connection to a gas-using appliance is disclosed. Gas for feeding a pilot flame of the appliance flows through a permanently open orifice. When the appliance is switched on the pressure at the devices outlet drops and a piston which is in a tube is lifted by gas pressure at the device's inlet. Gas then flows from the inlet to the outlet. A light source and a light sensitive cell provide a signal that indicates that the piston has lifted. A monitoring system which makes use of the signal provided by the cell is also disclosed.

REFERENCES:
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patent: 3510237 (1970-05-01), Giranieri
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patent: 4125355 (1978-11-01), Rozzi
patent: 4370126 (1983-01-01), Miyanaka et al.
patent: 4445238 (1984-05-01), Maxhimer
patent: 4788529 (1988-11-01), Lin
patent: 4934925 (1990-06-01), Berlincourt

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