Gas control valve in water heater
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 12, 2003
Grant Date -
Sep 20, 2001
app pub date -
Mar 15, 2001
filing date -
Mar 16, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas control valve is provided with a unipolar overheat prevention terminal of which the connection structure is simplified in a magnetic circuit. In a flame-retention, storage type closed vessel gas water heater for automatically controlling the temperature of hot water in a tank to a desired level, the unipolar overheat prevention terminal 7 is mounted in the main body of an ignition/extinction unit A as held with a retaining projection 15 provided integrally on a cover 14 of the ignition/extinction unit so that it can hardly be detached while being separated from a gas shut off magnetic valve MV mounted at the upstream side of a gas flow passage 1. A burner flame detecting thermocouple TC and the gas shut off magnetic valve MV in the magnetic circuit are connected to each other by the unipolar overheat prevention terminal 7.
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