Heating – With means diluting – purifying or burning exhaust gases
Patent
1977-08-11
1979-04-03
Yuen, Henry C.
Heating
With means diluting, purifying or burning exhaust gases
34 35, 432152, 422168, F23J 500
Patent
active
041475020
ABSTRACT:
A system is disclosed for controlling the thermal potential of an airstream containing combustible vapors such as is exhausted from a metal sheet treating oven. The system includes a sensing chamber into which the airstream is directed, a burner in the chamber for initiating oxidation of the vapors such that the temperature of the air in the chamber downstream from the burner is the sum of the temperature rise due to the heat added to the airstream by combustion of auxiliary fuel supplied to the burner and the thermal potential of the airstream. Means are shown for defining, over variations in airstream temperature and/or volumetric flow rate, the temperature rise which is due to combustion of auxiliary fuel so that a rise in the temperature of the airstream within the chamber which is due to a change in the thermal potential of the airstream introduced into said chamber is distinguishable. Means responsive to the distinguished temperature rise are provided for signaling a rise in the thermal potential of the airstream when a predetermined safe value is exceeded.
REFERENCES:
patent: 2743529 (1956-05-01), Hayes
patent: 2795054 (1957-06-01), Bowen
patent: 3314159 (1967-04-01), Betz
patent: 3472498 (1969-10-01), Price et al.
patent: 3606282 (1971-09-01), Stookey
patent: 3787171 (1974-01-01), Cromp
patent: 3917444 (1975-11-01), Conthew
patent: 4076504 (1978-02-01), Oshida et al.
Roper Corporation
Yuen Henry C.
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