Apparatus and method for monitoring the operating condition of a

Details Apparatus and method for monitoring the operating condition of a Apparatus and method for monitoring the operating condition of a

1992-04-03

1993-10-05

Dority, Carroll B.

Automatic temperature and humidity regulation

Furnace controlled

Furnace controlled responsive to combustion products...

236 15C, 431 12, 431 78, F23N 1100

Patent

active

052497399

ABSTRACT:
Apparatus and method for sensing the operating condition of a burner temperature as the indicating variable. When the operating status is stable, the flue temperature should be nearly identical to that when the system was known to be in proper condition. During a time when the system is known to be in proper operating condition, the flue temperature is recorded during stable operation for a number of different firing rates. When identical or similar firing rates occur at a later time and operation is stable, the operating flue temperature is compared with the current flue temperature, and if substantially different, an operation status signal is set to a state indicating this change in operating condition.

REFERENCES:
patent: 3877636 (1975-04-01), Sato
patent: 4373663 (1983-02-01), Hammer
patent: 4375950 (1983-03-01), Durley
patent: 4606529 (1986-08-01), Tooch
patent: 4994959 (1991-02-01), Ovenden et al.

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