Flame failure device

Details Flame failure device Flame failure device

1985-12-19

1986-11-25

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

431 58, 137828, F23N 500

Patent

active

046246320

ABSTRACT:
A flame failure device for a gas-fired appliance has a heat sensitive device (24') in the form of fine bore tube (25). The tube is connected to one chamber (10) of a pressure sensitive gas flow control valve assembly. The chamber is pressurized and the rate of flow from the chamber is controlled by flow through the fine bore tube (25) the application of heat to which reduces the rate of flow through the fine bore tube (25) while the withdrawal of heat restores the rate of flow. Heat is provided by a gas burner of the appliance. The fine bore tube may have a non-circular cross-section and be formed by deforming part at least of a length of tubing (FIGS. 4A and 5B).

REFERENCES:
patent: 3895901 (1975-07-01), Schwartz
patent: 4303384 (1981-12-01), Barnes

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