Wall-mounted fluid-fuel furnace
阅读：978发布：2023-05-12
专利汇可以提供Wall-mounted fluid-fuel furnace专利检索，专利查询，专利分析的服务。并且A gas or other fluid fired furnace for mounting in a wall, especially of a recreational vehicle providing living accommodations, such as so-called ''''campers,'''' house trailers, and the like, where space is at a premium and special problems of vibration, proper venting, and reliability in operation are presented. An elongate, specially fabricated, Venturi-tube burner is mounted, along with a fuel feed control unit, on a removable closure plate positioned across the lower end of a front pan-like member of a shallow, rectangular, upstanding firebox. The firebox provides a combustion chamber and heat exchanger for the furnace in a compact heater unit housing and has an outwardly extending peripheral fin through which a fuel supply extends at the bottom of the firebox and is preferably canted forwardly along the top of the firebox to direct air flow and increase efficiency. A special vent unit, provided for mounting exteriorly of the spaced to be heated flush with the exterior wall face and having a lower air inlet separated from an upper gas outlet by baffles, is connected with the heater unit by air or gas flow conduits which are thermally isolated one from the other by special gasket and mounting arrangements.，下面是Wall-mounted fluid-fuel furnace专利的具体信息内容。
1. A fluid-fired furnace adapted to be mounted on a wall of a structure to be heated, comprising a heater unit including a substantially rectangular heat exchanger firebox having front and rear broad panel walls and relatively narrow peripheral walls defining an upstanding combustion chamber, said firebox being formed by similar front and rear pan-like members having outwardly-turned rims and being secured together in open face to open face relationship to provide an intermediate peripheral fin extending outwardly of such firebox to increase the heat exchange surface area thereof; an elongate fluid fuel burner extending substantially entirely across the lower end of said firebox to direct flames upwardly in Said combustion chamber across the width thereof; conduit means communicating with the interior of the firebox at a low level thereof through the rear panel wall for supplying combustion-supporting air to said burner; conduit means communicating with the interior of the firebox at an upper level thereof for exhausting gaseous products of combustion from the firebox; a housing having walls defining flow channels about the exterior of said firebox for air to be heated and providing for inflow of cool air and outflow of heated air; the lower end of the front panel wall of the firebox and the adjacent bottom peripheral wall portion of the corresponding pan-like member being provided with an access opening leading to the interior of the firebox; a closure plate for said opening provided with a depending flange corresponding to the confronting portion of the rim of the rear pan-like member, the burner being mounted on the inside face of said closure plate; and a fluid fuel supply pipe leading into the firebox from the exterior thereof and connected with said burner, the rim of the rear pan-like member and the flange of the closure plate being recessed for receiving and accommodating said pipe.
2. A furnace according to claim 1, additionally including a saddle plate secured to the fuel supply pipe and to the inner face of the depending flange of the closure plate.
3. A furnace according to claim 1, wherein a control unit for feeding fluid fuel to the burner is connected to the supply pipe below the firebox within the flow-channel-defining walls.
4. A furnace according to claim 1, wherein the broad panel walls of the firebox in the areas thereof immediately above the burner and between the low level and upper level conduits are transversely corrugated, respectively, in mutually spaced relationship across the interior of said firebox, said corrugations being in approximately mating positional relationship with respect to the placement of ridges and valleys to provide flame-diverting baffles immediately above the burner.
5. A furnace according to claim 1, wherein the peripheral fin of the firebox is canted forwardly along the top of the firebox to direct air flow.
6. A furnace according to claim 1, additionally including a vent unit for drawing in combustion-supporting air from, and for exhausting combustion gases to, the atmosphere while the structure to be heated is traveling along a highway, said vent unit having baffle means separating a gas-exhaust area from an air-intake area, the low level conduit means communicating with said air-intake area and the upper level conduit means comprising an exhaust flue communicating with said gas-exhaust area and passing through a wall of the flow-channel-providing housing; and a fluid-tight, heat resistant seal supporting said flue in its passage through the housing wall, said seal including a recessed retainer frame secured to said wall and holding a sheet of stiffly flexible, heat resistant, sealing material with freedom for lateral movement, said flue passing snugly through said sheet of sealing material and through said wall in spaced relationship with said wall and said retainer frame.
7. A furnace according to claim 6, wherein the exhaust flue extends to interconnection with the vent unit through a radiation protective conduit supported at one end by brackets affixed to the retainer plate of the seal and at the opposite end by brackets affixed to the vent unit.
8. A furnace according to claim 7, wherein the vent unit includes a housing adapted to be mounted in the wall of the space to be heated, and the baffle means includes an exhaust vent pan having a baffle thereon defining exhaust openings near the top and being open at the bottom for the inflow of atmospheric air, said vent pan being secured to the exhaust flue and removably secured to the vent unit housing.
9. A furnace according to claim 8, wherein the vent pan is removably secured to the vent unit housing by means of tongues at opposite sides of the vent pan fricTionally fitted into receiving recesses of mounting brackets secured to the vent unit housing.
10. A furnace according to claim 1, wherein the burner is fabricated from two recessed metal stampings having outwardly extending peripheral rims and welded together in open face to open face relationship to provide an intermediate peripheral fin, there being a series of burner openings extending longitudinally of each of said metal stampings to one side of said fin and canted outwardly toward the broad panel walls of the firebox.
11. A furnace according to claim 1, wherein the housing defining flow channels about the exterior of the firebox includes top, bottom, side and rear walls, an internal first heat radiation shield attached to the firebox and defining flow channels therearound, a second heat radiation shield defining flow channels around the said first shield, and a third heat radiation shield interposed between said first and said second shields, the said top wall being cut and bent upwardly as a flap to form another heat radiation shield extending along the width of the housing.
12. A furnace according to claim 11, wherein the first and second radiation shields and said second radiation shield and the flap of the top wall of the housing are connected by dimpled portions of said second radiation shield.
13. In a fluid-fired furnace adapted to be mounted on a wall of a structure to be heated and comprising a heater unit, provided with a heat exchanger firebox having front and rear broad panel walls and with a housing having walls defining flow channels about the exterior of said firebox, a vent unit for exhausting combustion gases to the atmosphere from said firebox, and an exhaust flue interconnecting said firebox and said vent unit and passing through a wall of said housing, the provision of a fluid-tight, heat resistant seal supporting said flue in its passage through the housing wall, said seal including a retainer frame secured to said wall; and a sheet of stiffly flexible, heat resistant, gasket material held by said frame with freedom of movement within said frame as an entire sheet and peripherally thereof substantially without distortion, said flue passing snugly through said sheet and through said wall in spaced relationship with said wall and said retainer frame.
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