Heater and burner assembly therefor
OwnerJohn A. Kitcheninventor
Life of this patent
Estimating the term…
Abstract
A heater, particularly for emergency use in a car or other vehicles is designed to use solid paraffin wax fuel. The heater has a housing containing a combustion chamber and burner. A vent duct is angled outwardly from the housing and both provides combustion air and permits exhaust of combustion products. The vent duct can be inserted through a window opening in a vehicle so that interior air is not consumed or contaminated when the heater is in operation.
Claims14
A heater comprising:
- a housing defining a combustion chamber and adapted to permit radiation of heat produced by combustion in said chamber, the combustion chamber having an exhaust outlet, and the housing including a combustion air inlet passageway;
- a fuel reservoir disposed in said housing below the combustion chamber, for containing a fuel supply;
- a burner disposed in the combustion chamber and comprising:
- a combustion air inlet tube disposed in a generally upright position above said fuel reservoir and having an air outlet at its upper end and an air inlet at its lower end, said air inlet communicating with said combustion air inlet passageway;
- a wick in the form of a mass of non-combustible fibres wrapped around an annular support surrounding said air outlet and defining a combustion zone;
- means constraining the fibres to extend downwardly from said support and into the fuel reservoir for conveying liquid fuel to said combustion zone;
- and means for delivering secondary combustion air to said combustion zone externally of the wick, from said combustion air inlet passageway;
- said means constraining the fibres of the burner comprising a series of tubes extending downwardly from positions adjacent said air outlet of the combustion air inlet tube and into the fuel reservoir, said fibres being disposed in said tubes, the tubes being coupled together adjacent said inlet tube to provide a substantially continuous annular wick and being spaced from one another away from said tube to permit said secondary combustion air to flow outwardly between the tubes;
- and,
- a vent duct defining a first passageway providing communication between said air inlet passageway in the housing and a remote air inlet at an outer end of the duct, and a second passageway providing communication between said combustion chamber exhaust outlet and an exhaust opening adjacent said air inlet, said duct being of elongate form and extending outwardly from said housing to space said air inlet and exhaust outlet from the housing so as to permit the heater to be disposed within a space to be heated and vented outside said space by way of said vent.
In a heater including a housing defining a combustion chamber and adapted to permit radiation of heat produced by combustion in said chamber, a fuel reservoir disposed in the housing below the combustion chamber for containing a fuel supply, a burner disposed in the combustion chamber and including a wick communicating with the fuel supply, an exhaust outlet from said combustion chamber, and combustion air supply means communicating with said burner;
- the improvement wherein said burner comprises a combustion air inlet tube disposed in a generally upright position above said fuel reservoir and having an air outlet at its upper end and an air inlet at its lower end, said inlet communicating with said combustion air inlet of the heater;
- said wick comprising a mass of non-combustible fibres wrapped around an endless support surrounding said air outlet and defining a combustion zone;
- means constraining the fibres to extend downwardly from said support and into the fuel reservoir for conveying liquid fuel to said combustion zone;
- and means for delivering secondary combustion air to said combustion zone externally of the wick, from said combustion air inlet passageway;
- said means constraining the fibres of the burner comprising a series of tubes extending downwardly from positions adjacent said air outlet of the combustion air inlet tube and into the fuel reservoir, said fibres being disposed in said tubes, the tubes being coupled together adjacent said inlet tube to provide a substantially continuous annular wick and being spaced from one another away from said tube to permit said secondary combustion air to flow outwardly between the tubes.
Dependencies are inferred from the claim text.