Space heater

Details Space heater Space heater

2007-03-27

2007-03-27

Basichas, Alfred (Department: 3749)

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

C126S11000R, C432S219000

Reexamination Certificate

active

11028680

ABSTRACT:
Disclosed is a space heater, with an air cleaning function, that monitors combustion at a burner, and prevents the halting of combustion due to the erroneous detection of a combustion abnormality. According to the present invention, a space heater includes: a heating unit control unit, which performs a “heating operation” for igniting fuel gas at a burner to operate a heating fan; an air cleaning unit control unit, which performs an “air cleaning operation” for operating an ion generator and an air cleaning fan; a combustion forced halt unit, for monitoring the combustion state of the burner based on a thermoelectromotive force TC generated by a thermocouple, and for halting combustion at the burner when the thermoelectromotive force TC drops, from a reference value TC_b, the equivalent of a determination level TC_j or more; and a reference value setup unit for, when the mode is shifted from an “independent heating mode”, during which only the “heating operation” is performed, to a “synchronous operating mode”, during which both the “heating operation” and the “air cleaning operation” are performed, designating as the reference value TC_b the thermoelectromotive force TC, generated by the thermocouple16, that is stabilized after mode switch.

REFERENCES:
patent: 6382305 (2002-05-01), Sano
patent: 6647203 (2003-11-01), Helt et al.
patent: 0330157 (1989-08-01), None
patent: 5-223248 (1993-08-01), None

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