Forced air heater

Claim 2

A portable heater comprising a housing forming a shell having an inlet and an outlet, a combustion chamber positioned within said shell between said inlet and outlet, said combustion chamber having inlet and outlet ends, said outlet end of said combustion chamber having a baffle member secured thereto, said baffle member having a central opening and a plurality of openings disposed around said central opening, and nozzle means disposed within said shell and extending into said inlet end of said combustion chamber.

Claim 3

A heater as in claim 1 wherein said central opening of said baffle member includes an inturned flange, and said combustion chamber includes a substantially cylindrical wall extending between said inlet and outlet ends thereof.

Claim 4

A heat as in claim 1 wherein airscoop means is affixed to the inlet end of said combustion chamber for deflecting air through said inlet end and about said nozzle means, said scoop means including means for supporting said nozzle means at the inlet end of said combustion chamber.

Claim 5

A heater as in claim 1 wherein said shell is substantially cylindrical and said combustion chamber includes a body which is substantially cylindrical, and a liner mounted within said shell about said combustion chamber, said body of said combustion chamber, said liner and said shell forming an airspace surrounding said body and an air space surrounding said liner.

Claim 6

A heater as in claim 1 including bracket means coupling said nozzle means to said combustion chamber, ignition means disposed in said combustion chamber for igniting fuel from said nozzle means, and said nozzle means comprises a nozzle having a plurality of orifices, and having a configured peripheral portion mating with a configured opening in said bracket means for facilitating orientation of said orifices with respect to said ignition means.

Claim 7

A portable forced air heater comprising a housing forming a shell having an inlet and an outlet, fan means coupled with said shell for supplying air through said shell toward said outlet, a combustion chamber positioned within said shell downstream of said fan means for receiving air from said fan means, said combustion chamber having constricted inlet and outlet ends, said outlet end comprising a baffle member secured to said chamber, said baffle member having a central opening and a plurality of openings disposed about said central openings, said baffle member having a flange at said central opening extending into said chamber, nozzle means disposed in said shell and extending into said inlet end of said combustion chamber for supplying fuel into the combustion chamber, and liner means mounted about said combustion chamber between the chamber and said shell.

Claim 8

A portable forced air heater comprising a housing forming a shell having an inlet and an outlet, fan means coupled with said shell for supplying air through said shell toward said outlet, a combustion chamber positioned within said shell downstream of said fan means for receiving air from said fan means, said combustion chamber having constricted inlet and outlet ends, said outlet end comprising a baffle member secured to said chamber, said baffle member having a central opening and a plurality of openings disposed about said central openings, said baffle member having a flange at said central opening extending into said chamber, nozzle means disposed in said shell and extending into said inlet end of said combustion chamber for supplying fuel into the combustion chamber, and liner means mounted about said combustion chamber between the chamber and said shell.

Claim 9

A heater as in claim 6 wherein said combustion chamber has a substantially cylindrical wall extending between said inlet and outlet ends, said cylindrical wall having apertures therein for admitting air into said combustion chamber.

Claim 10

A heater as in claim 6 wherein said combustion chamber comprises a substantially cylindrical wall with an inlet cover, and with an outlet cover forming said baffle member, said inlet cover having an aperture therein, and bracket means mounting temperature sensitive means adjacent said aperture in said inlet cover for sensing a predetermined temperature within said combustion chamber.

Claim 11

A nozzle assembly for use with a portable forced air heater employing a combustion chamber having an inlet end to which said nozzle assembly and ignition means are coupled, said assembly comprising bracket means for mounting said assembly in a predetermined relationship with respect to said ignition means, said bracket means having a configurated opening therein, an elongated nozzle having a passageway therein terminating in a plurality of fuel outlet orifices radiating from the longitudinal axis of said nozzle, said nozzle having at least a configured peripheral portion mating with the configured opening in said bracket means for facilitating orientation of said orifices with respect to said ignition means, and a flame spreader plate coupled with the downstream end of said nozzle downstream of said orifices.

Claim 12

A nozzle assembly for use with a portable forced air heater employing a combustion chamber having an inlet end to which said nozzle assembly and ignition means are coupled, said assembly comprising bracket means for mounting said assembly in a predetermined relationship with respect to said ignition means, said bracket means having a configurated opening therein, an elongated nozzle having a passageway therein terminating in a plurality of fuel outlet orifices radiating from the longitudinal axis of said nozzle, said nozzle having at least a configured peripheral portion mating with the configured opening in said bracket means for facilitating orientation of said orifices with respect to said ignition means, and a flame spreader plate coupled with the downstream end of said nozzle downstream of said orifices.

Claim 13

A portable forced air heater comprising a housing having an inlet and an outlet, fan means coupled with said housing for supplying air through said housing toward said outlet, combustion chamber means positioned within said housing for receiving air from said fan means, said combustion chamber means comprising a substantially cylindrical shell having an inlet cover and an outlet baffle, said inlet cover having an opening therein and said outlet baffle having a central opening therein and a plurality of apertures disposed aboUt the central opening thereof, ignition means coupled with said inlet cover of said combustion chamber means for igniting fuel in said chamber, nozzle means mounted in said housing and extending into said opening in said inlet cover of said combustion chamber means for supplying fuel into said combustion chamber, said nozzle having a plurality of fuel outlet orifices radiating from the longitudinal axis of the nozzle and having at least a configured peripheral portion mating with bracket means for facilitating positioning of said nozzle in said inlet cover with respect to said ignition means, and a flame spreader plate coupled with the downstream end of said nozzle, and air deflecting means mounting downstream of said fan means for deflecting air into said opening in said inlet cover of said combustion chamber means.

Claim 14

A portable forced air heater comprising a housing having an inlet and an outlet, fan means coupled with said housing for supplying air through said housing toward said outlet, combustion chamber means positioned within said housing for receiving air from said fan means, said combustion chamber means comprising a substantially cylindrical shell having an inlet cover and an outlet baffle, said inlet cover having an opening therein and said outlet baffle having a central opening therein and a plurality of apertures disposed aboUt the central opening thereof, ignition means coupled with said inlet cover of said combustion chamber means for igniting fuel in said chamber, nozzle means mounted in said housing and extending into said opening in said inlet cover of said combustion chamber means for supplying fuel into said combustion chamber, said nozzle having a plurality of fuel outlet orifices radiating from the longitudinal axis of the nozzle and having at least a configured peripheral portion mating with bracket means for facilitating positioning of said nozzle in said inlet cover with respect to said ignition means, and a flame spreader plate coupled with the downstream end of said nozzle, and air deflecting means mounting downstream of said fan means for deflecting air into said opening in said inlet cover of said combustion chamber means.

Claim 15

A portable forced air heater comprising housing means forming a shell having an inlet and outlet, fan means disposed for supplying air through said shell toward said outlet, combustion chamber means positioned within said shell downstream of said fan means for receiving air from said fan means, said combustion chamber means having constricted inlet and outlet ends, said outlet end comprising a baffle member having a plurality of openings therethrough, and nozzle means disposed in said shell and extending through an opening forming said constricted inlet end of said combustion chamber means and extending into said chamber means for supplying fuel into the combustion chamber means, said nozzle means comprising an elongated nozzle having a plurality of fuel outlet orifices radiating from the longitudinal axis of the nozzle and a flame spreader plate coupled with the downstream end of said nozzle, the downstream end of said nozzle with said orifices being positioned within said combustion chamber means downstream of the constricted inlet end of said combustion chamber means.

Claim 16

A portable forced air heater comprising housing means forming a shell having an inlet and outlet, fan means disposed for supplying air through said shell toward said outlet, combustion chamber means positioned within said shell downstream of said fan means for receiving air from said fan means, said combustion chamber means having constricted inlet and outlet ends, said outlet end comprising a baffle member having a plurality of openings therethrough, and nozzle means disposed in said shell and extending through an opening forming said constricted inlet end of said combustion chamber means and extending into said chamber means for supplying fuel into the combustion chamber means, said nozzle means comprising an elongated nozzle having a plurality of fuel outlet orifices radiating from the longitudinal axis of the nozzle and a flame spreader plate coupled with the downstream end of said nozzle, the downstream end of said nozzle with said orifices being positioned within said combustion chamber means downstream of the constricted inlet end of said combustion chamber means.