Forced Air Patents (Class 126/15A)
  • Patent number: 5406932
    Abstract: There is provided a range for sealed combustion of a gaseous fuel comprising a hob assembly and an oven. The hob assembly comprises a glass ceramic cooking surface sealed to a support box and one or more burners. The hob assembly and oven are connected to a fresh air intake/exhaust manifold, such that there is no air exchange between the range and the room in which it is located.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: April 18, 1995
    Assignee: Canadian Gas Research Institute
    Inventors: Anthony L. P. Joseph, John C. K. Overall, Christopher Runcieman, Colin Wright
  • Patent number: 5168860
    Abstract: A barbeque has a base and a hollow column extending upwardly from the base to an upper housing, which may comprise a housing body an a lid. A firebox is provided within the housing for charcoal or other fuel and is perforated to permit combustion air to pass therethrough. A fan is provided at a lower end of the column, for drawing air up through the column and forcing it through into the upper body and hence through the firebox, for promoting combustion of the fuel.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: December 8, 1992
    Inventor: Gabriel Kibourian
  • Patent number: 5148798
    Abstract: A stove for burning solid fuel, such as coke or coal, comprises a feed hopper for storing a stock of fuel and a supporting member for supporting fuel present in a fireplace. The feed hopper is in communication near its lower side with the space incorporating the fireplace via a downwardly sloping fuel supply channel. The boundary walls of the channel are arranged one above the other. A passage is provided for the supply of primary combustion air near the lower side of the combustion chamber. An inlet passage for the supply of secondary combustion air is provided above the combustion chamber. The primary combustion air is sucked-in with the aid of a fan disposed upstream of the combustion chamber. The passage for supplying the primary combustion air is automatically closed by a valve when the fan is made inoperative.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: September 22, 1992
    Assignee: Oliehandel de Kock B.V.
    Inventor: Gerardus J. A. de Kock
  • Patent number: 5076258
    Abstract: An automatic food cooker having a tubular frame used as an air conduit system for delivering air to the fuel source. When the attached fan is turned on air is blown through the tubular frame and out the exhaust on the vertical frame members. The exhaust ports are adjacent the lower longitudinal frame near the fuel source. Therefore, regardless of the wind condition the fuel source may be fed sufficient air to promote burning. Use of the tubular frame as air conduits minimizes the cost involved in providing the air delivery system for the cooker. A portion of the frame is used as hot air conduits for drawing heated air from the cooker interior and delivering it to an upper chamber for heating or cooking food products contained therein.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 31, 1991
    Assignee: Nelgo Manufacturing, Inc.
    Inventor: Dean Gongwer
  • Patent number: 4867050
    Abstract: A barbecue cooking device includes a housing having a casing defining a combustion chamber supported centrally therein spaced from the walls of the housing. A heat shield surrounds the combustion casing and is spaced therefrom. A diffuser plate is mounted in the combustion chamber and includes openings in at least a portion thereof for the passage of air under pressure for creating a primary combustion zone. Air is forced against the bottom of the diffuser plate under pressure by an electrically driven fan. The combustion casing has a top open end spaced from the open top end of the housing where a cooking grill is supported. Air also is caused to flow between the combustion casing and the heat shield to supply air to the area at the top of the combustion casing for mixing with heated fuel gas from the primary combustion zone, whereby a secondary combustion zone is created above the combustion chamber and beneath the cooking grill.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: September 19, 1989
    Inventors: Jean-Pierre Patenaude, Gilles-Joseph Patenaude
  • Patent number: 4635610
    Abstract: A hot air circulating oven in which separate shape memory alloy springs are employed as a drive means to open and close a damper for the oven.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: January 13, 1987
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takao Nakanishi
  • Patent number: 4616627
    Abstract: A forced draft, solid fuel burning stove incorporates a plurality of air distribution conduits disposed intermediate an ash collection receptacle and a solid fuel support grate. The forced draft air is directed upwardly onto a deflector in a manner to permit the flow of air to be evenly distributed across the solid fuel and across the food support surface. The movement of the forced draft air against the deflector establishes a turbulent, randon movement which prevents high concentrations of forced air directly upon the solid fuel, which would otherwise loosen ash particles from the solid fuel and carry them upwardly onto the food support surface.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: October 14, 1986
    Assignee: Lawton Haygood Corporation
    Inventor: Lawton C. Haygood
  • Patent number: 4319556
    Abstract: A wood burning stove having a primary combustion chamber and a secondary chamber having a catalytic converter therein is disclosed. Primary air is introduced to said primary chamber and secondary air is introduced to said secondary chamber utilizing completely separate and independent control means, with the draft means for said primary and secondary air both being located below the fuel (wood) support level. Means are provided for preheating both the secondary air and the catalytic converter.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: March 16, 1982
    Assignee: Jamestown Group
    Inventors: Larry A. Schwartz, Robert Geiter, Peter S. Albertsen
  • Patent number: 4265214
    Abstract: A heating apparatus is disclosed wherein a combustion chamber which contains the fuel to be burned is located adjacent to an air heating chamber. Conduit means communicate from the air heating chamber to the combustion chamber for the purpose of leading air, which has been heated within the air heating chamber, into the combustion chamber. Blower means draw ambient air from the space surrounding the heater into the air heating chamber where it is blown through the conduit means into the combustion chamber to promote efficient combustion of the fuel.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: May 5, 1981
    Inventor: Henry Rasmussen
  • Patent number: 4263887
    Abstract: A refractory lined firebox is encased in a low profile furnace shell of generally rectangular configuration. Mounted on top of the firebox within the furnace shell is a heat exchanger which provides alternating passageways at right angles to one another through which flue gas and air to be heated flow in heat exchange relationship. The heat exchanger and firebox are so related that the axes of the passageways are inclined from the horizontal and the flow through them is generally upward as well as lateral. The furnace includes special combustion air ducts for use in combustion of the solid fuel. The furnace is also equipped with a back-up liquid fuel burner and a control system which activates and operates the liquid fuel burner in response to total consumption or burn out of the solid fuel in the firebox.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: April 28, 1981
    Inventor: Donald H. Dowdall
  • Patent number: 4232653
    Abstract: A wood-burning furnace including a combustion chamber having a novel combustion air distribution system including jets whereby air is delivered only to a limited portion of the area of the fire bed, and whereby clogging of the jets by the large quantities of wood ash is prevented, the combustion air being delivered by a thermostatically controlled blower and damper system such that the heat delivered by the furnace may be controlled and regulated with substantially the same degree of accuracy as that obtainable with gaseous and liquid fuels.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: November 11, 1980
    Inventor: James H. Otterpohl
  • Patent number: 3946733
    Abstract: Therapeutic device for locally topical treatment of the body comprising a skin-applicable open-mouthed combustion chamber, a grating support for herbs or other combustible material and means such as a pressurized air supply and/or a restricted combustion gas outlet to pressurize gases held at the skin by the combustion chamber mouth.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: March 30, 1976
    Inventor: Jin Suk Han