Gaseous flow control for combustion devices

Details Gaseous flow control for combustion devices Gaseous flow control for combustion devices

1985-10-07

1987-09-08

Jones, Larry

Stoves and furnaces

Stoves

Heating

126117, 126288, 126289, 126112, 110203, F24C 114

Patent

active

046916865

ABSTRACT:
An intake air pathway for a wood-burning stove is provided with a control mechanism which automatically responds both to changes in temperatures for controlling the amount of intake air flowing in the pathway and to pressure due to back puff conditions in the stove for closing the intake pathway with and thereby preventing emissions due to back puff. The point of control of the intake pathway may be placed along different points of the pathway. Control valve and check valve functions may be accomplished with a single control surface (i.e., plate or flap), or alternatively, be segregated into two control surfaces. The control arrangement is disposed such that gravity always acts as a safety feature to close the intake air pathway during an uncontrolled fire (e.g. chimney fire) or physical failure of the control apparatus. A fixed-shield baffle system surrounding a combustor of the stove causes reversals of combustion gasses and a secondary air flow supplied to the combustor. Such reversals generate a swirling action of the combustion gasses and secondary air flow which in turn causes a balanced flow of the same across the entire surface of the combustor. This enhances the eveness of combustor activity, thereby improving both efficiency of combustor operation and longevity of a given combustor.

REFERENCES:
patent: 4180051 (1979-12-01), Maier et al.
patent: 4267818 (1981-05-01), Taylor
patent: 4345897 (1982-08-01), Stanton
patent: 4471755 (1984-09-01), Faehling et al.
patent: 4476852 (1984-10-01), Lee et al.
patent: 4530346 (1985-07-01), Roy

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