Wood burning stove

Details Wood burning stove Wood burning stove

1981-06-05

1984-09-04

Yeung, James C.

Stoves and furnaces

Stoves

Heating

126 65, 126 77, 126 83, 126200, 126289, F24C 114

Patent

active

044690835

ABSTRACT:
A stove for burning solid fuel such as firewood. a lower level air inlet opening is provided for so-called "primary air," and another air inlet opening is provided at a higher level for so-called "secondary air." The volume of air introduced into the stove from each inlet opening is separately controlled. An air metering means controls the amount of secondary air introduced into the stove through the higher level air inlet opening. The lower level air inlet opening and the air metering means both have a finite number of predetermined, fixed air transmitting conditions and no other air transmitting conditions. The lower level air inlet opening has preferably two predetermined, fixed air transmitting conditions--a maximum and a minimum. The air metering means has at least a predetermined, fixed maximum air transmitting condition and preferably also a predetermined, fixed minimum, transmitting condition. The level at which the two air inlet openings are located is specified. The cross-sectional area of the air passageway provided by the air metering means is carefully controlled in relation to the volume of the fire chamber. This is done either dimensionally or by a trial-and-error method in which the appropriate air transmitting condition for each of three defined modes of operation of the stove--rapid burning, normal burning, and banked--is determined. When a viewing box is employed with the stove, the air metering means is arranged so that its terminal aperture is a narrow, elongated slot which directs a thin, planar sheet of preheated air substantially across the width of the viewing window to prevent deposition of creosote and other undesirable solids on the window. Thermostat controlled automatic operation is provided to shift the stove from its rapid burning to its banked mode and vice versa, or from rapid burning to normal burning mode and vice versa, as circumstances require.

REFERENCES:
patent: 2545680 (1951-03-01), Wyatt
patent: 4095581 (1978-06-01), Billmeyer et al.
patent: 4136662 (1979-01-01), Willson
patent: 4141336 (1979-02-01), Fitch
patent: 4210119 (1980-07-01), Kincaid
patent: 4212286 (1980-07-01), Shane et al.
patent: 4214569 (1980-07-01), Heine
patent: 4329930 (1982-05-01), Riley
patent: 4343289 (1982-08-01), Zimmerman
patent: 4362146 (1982-12-01), Schuller

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