Stoves and furnaces – Liquid heater – Fluid fuel burner for other than top-accessible vessel
Patent
1979-05-11
1981-11-03
Scott, Samuel
Stoves and furnaces
Liquid heater
Fluid fuel burner for other than top-accessible vessel
431 6, 431 12, 122235R, 237 8D, F24H 100
Patent
active
042979870
ABSTRACT:
A package heat exchange system is disclosed having a burner positioned in the central plenum of a substantially cylindrical heat exchanger. A fuel-air mixture is supplied through a blower supplied with fuel from a pressure regulator which requires a somewhat less than atmospheric pressure at the blower inlet to draw gaseous fuel through the pressure regulator. A solenoid-operated, positive pressure valve in the main gasline provides the heat exchanger with an enriched gas mixture on ignition. The enrichment valve automatically closes after 30 seconds of operation. Air for combustion is drawn through a series of orifice plates positioned between the regulator and the blower. The fuel-to-air ratio may be altered by changing the size and/or number of the holes in one of the orifice plates. Further, one of the orifice plates may be deformable so as to form a seal, and to supply a predetermined quantity of air to the burner for combustion. The blower motor also drives a solution pump that circulates a fluid to the cylindrical heat exchanger and from there to a second heat exchanger for heating the air within an enclosure. The blower supplies the fuel-air mixture to the burner where it is ignited. An ignition reset timer automatically initiates an ignition cycle every 30 minutes as long as the thermostat is calling for heat. The products of combustion are radially exhausted upward through a wrapper surrounding the cylindrical heat exchanger and discharged from the package through a cap. The package heat exchanger system may be combined with a conventional air conditioning system to either heat or cool an enclosure, depending upon the mode desired.
REFERENCES:
patent: 2525400 (1950-10-01), Crawford
patent: 3383042 (1968-05-01), Mobus et al.
patent: 3887325 (1975-06-01), Finger et al.
patent: 3967590 (1976-07-01), Hays et al.
patent: 3997109 (1976-12-01), Hays
patent: 4008038 (1977-02-01), Berthiaume
patent: 4058087 (1977-11-01), Rehm
patent: 4095930 (1978-06-01), Huston
patent: 4135487 (1979-01-01), Hays
Amana Refrigeration Inc.
Green Randall L.
Hoke II Robert W.
Scott Samuel
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