Heating apparatus having improved combustion

Claim 2

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary air path and extending at least along said downwardly directed baffle for providing preheated air to said secondary combustion chamber at said opening, a manually controlled night air supply path spaced apart from said primary and secondary supply paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 3

The apparatus of claim 1 further including a thermostatically controlled inlet port in said frame for supplying air to said primary and secondary supply paths.

Claim 4

The apparatus of claim 1 further including a pivoting top cover for providing a smokeless loading aperture in said frame top when said top cover is pivoted to an open condition.

Claim 5

The apparatus of claim 3 wherein the ratio of the area of the loading aperture to the area of the exit aperture is approximately three to one.

Claim 6

The apparatus of claim 3 further including an asbestos sealing member between the top cover and the frame member when the top cover is in a closed condition.

Claim 7

The apparatus of claim 1 further including a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, and means for rigidly mounting said fixed flue collar to said frame member in one of said positions.

Claim 8

The apparatus of claim 1 wherein said secondary air supply path comprises a first imperforate conduit section connected to a supply port and a second apertured section positioned substantially around the opening at the bottom of said baffle for supplying air substantially evenly across a substantial portion of said baffle opening.

Claim 9

The apparatus of claim 7 wherein said supply path has a variable cross-sectional area, said area being a maximum at approximately the intersection of said imperforate and apertured sections.

Claim 10

The apparatus of claim 1 wherein said opening at the bottom of said baffle has a height of between 3 and 41/4 inches.

Claim 11

The apparatus of claim 9 wherein said opening has a height of approximately 4 inches.

Claim 12

The apparatus of claim 1 wherein said frame has a corrugation shaped back panel for providing a larger heat radiation area.

Claim 13

The apparatus of claim 1 wherein said baffle is parallel to the long dimension of said primary combustion chamber.

Claim 14

The apparatus of claim 12 wherein said primary air path extends and is apertured along a first short side of the primary chamber away from said opening, said opening being bounded on one side by a short side of the frame member which also forms the other short side of the primary combustion chamber, whereby the flow of gas across the primary combustion chamber is substantially from said first short side, parallel to said baffle and then through said baffle opening.

Claim 15

The apparatus of claim 1 wherein said primary air path in said primary combustion chamber is defined by a slotted air tube conduit comprising, in cross section, a J-shaped horizontally directed portion extending from a vertical wall of said frame and an upwardly directed vertical portion directed to intersect, if extended, the J-shaped portion.

Claim 16

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a pivoting top cover for providing a smokeless loading aperture in said frame top when said top cover is pivoted to an open condition, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, and said top cover, in a closed position, lying in a plane extending no higher than said combustion products exit aperture.

Claim 17

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a pivoting top cover for providing a smokeless loading aperture in said frame top when said top cover is pivoted to an open condition, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, and said top cover, in a closed position, lying in a plane extending no higher than said combustion products exit aperture.

Claim 18

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, means for rigidly mounting said fixed flue collar to said frame member in one of said positions, said flue collar being physically removed from said frame when changed from one said position to the other position, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 19

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, means for rigidly mounting said fixed flue collar to said frame member in one of said positions, said flue collar being physically removed from said frame when changed from one said position to the other position, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 20

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, said primary air path in said primary combustion chamber being defined by a slotted air tube conduit comprising, in cross section, a J-shaped horizontally directed portion extending at least in part from a vertical side wall panel of said frame and an upwardly directed vertical portion extending from a bottom panel of said frame and directed to intersect, if extended, the J-shaped portion, the top of said vertical portion extending above the lowest level of said J-shaped portion, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 21

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, said primary air path in said primary combustion chamber being defined by a slotted air tube conduit comprising, in cross section, a J-shaped horizontally directed portion extending at least in part from a vertical side wall panel of said frame and an upwardly directed vertical portion extending from a bottom panel of said frame and directed to intersect, if extended, the J-shaped portion, the top of said vertical portion extending above the lowest level of said J-shaped portion, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 22

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, said frame having a corrugation shaped back panel for providing a larger heat radiation area, said corrugations being reflected on both the interior and exterior surfaces of said back panel, means for enclosing, on an interior surface of at least one externally projecting corrugation a portion of an air supply path, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 23

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber, for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting said primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, said frame having a corrugation shaped back panel for providing a larger heat radiation area, said corrugations being reflected on both the interior and exterior surfaces of said back panel, means for enclosing, on an interior surface of at least one externally projecting corrugation a portion of an air supply path, and a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products.

Claim 24

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary supply path and extending at least along said downwardly directed baffle for providing at said opening preheated air for promoting secondary combustion, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, said night air supply path extending along a corrugation shaped back panel of said frame, and there being enclosed, for at least a portion of an externally projecting corrugation in said back panel, a pivoting top cover and means for providing a smokeless loading aperture in said frame top when said top cover is pivoted to an open condition, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, and a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus.

Claim 25

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary supply path and extending at least along said downwardly directed baffle for providing at said opening preheated air for promoting secondary combustion, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, said night air supply path extending along a corrugation shaped back panel of said frame, and there being enclosed, for at least a portion of an externally projecting corrugation in said back panel, a pivoting top cover and means for providing a smokeless loading aperture in said frame top when said top cover is pivoted to an open condition, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, and a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus.

Claim 26

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary path and extending at least along said downwardly directed baffle for providing preheated air to said secondary combustion chamber at said opening, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, means for rigidly mounting said fixed flue collar to said frame member in one of said positions, wherein said flue collar must be removed from said frame to change the mounting from one position to said other position, said primary air path in said primary combustion chamber being defined by a slotted air tube conduit comprising, in cross section, a J-shaped horizontally directed portion extending at least in part from a vertical side wall panel of said frame and an upwardly directed vertical portion extending from a bottom panel of said frame and directed to intersect, if extended, the J-shaped portion, the top of said vertical portion extending above the lowest level of said J-shaped portion, and said opening extending parallel to a damper element pivot axis.

Claim 27

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary path and extending at least along said downwardly directed baffle for providing preheated air to said secondary combustion chamber at said opening, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, means for rigidly mounting said fixed flue collar to said frame member in one of said positions, wherein said flue collar must be removed from said frame to change the mounting from one position to said other position, said primary air path in said primary combustion chamber being defined by a slotted air tube conduit comprising, in cross section, a J-shaped horizontally directed portion extending at least in part from a vertical side wall panel of said frame and an upwardly directed vertical portion extending from a bottom panel of said frame and directed to intersect, if extended, the J-shaped portion, the top of said vertical portion extending above the lowest level of said J-shaped portion, and said opening extending parallel to a damper element pivot axis.

Claim 28

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary path and extending at least along said downwardly directed baffle for providing preheated air to said secondary combustion chamber at said opening, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, and means for rigidly mounting said fixed flue collar to said frame member in one of said positions, wherein said flue collar must be removed from said frame to change the mounting from one position to said other position, and p1 said downwardly directed baffle and a rear panel of said frame member having means cast integral therewith for defining said long flame path as at least two gaseously connected, substantially horizontally directed gas flow paths, said horizontal paths extending substantially parallel to said opening.

Claim 29

A wood-burning heating apparatus comprising a heat conducting frame member enclosing a primary combustion chamber, a secondary combustion chamber in gaseous communication with said primary combustion chamber, and a baffling arrangement in gaseous communication with said secondary combustion chamber for providing a long internal flame path, a vertically oriented, downwardly directed baffle for separating said primary and secondary combustion chambers, a portion of said baffle being spaced from a bottom surface of said frame for providing an opening connecting the primary and secondary combustion chambers adjacent said frame bottom surface for providing said gaseous communication therebetween, a primary air supply path for providing air for promoting combustion in said primary combustion chamber, a secondary air supply path spaced apart from said primary path and extending at least along said downwardly directed baffle for providing preheated air to said secondary combustion chamber at said opening, a manually controlled night air supply path spaced apart from said primary and secondary paths for providing a controlled amount of preheated air from a manually controlled inlet port to said secondary combustion chamber, a combustion products exit aperture at a top portion of said frame and in gaseous communication with said baffling arrangement for providing an exit port for combustion products, a removable flue collar for providing in one position a top exiting heating apparatus and in a second position a rear exiting heating apparatus, said flue collar having a positioning configuration for mounting against said frame member in only said first and second positions, and means for rigidly mounting said fixed flue collar to said frame member in one of said positions, wherein said flue collar must be removed from said frame to change the mounting from one position to said other position, and p1 said downwardly directed baffle and a rear panel of said frame member having means cast integral therewith for defining said long flame path as at least two gaseously connected, substantially horizontally directed gas flow paths, said horizontal paths extending substantially parallel to said opening.