Abstract A liquid fuel oil burner of the type including an outer tubular housing including discharge and inlet ends and through which combustion air is blown under pressure with a tubular body disposed within the discharge end of the housing or tube and enclosing an axial discharge atomizing nozzle for liquid fuel and spaced ignition electrodes. The end of the tubular body corresponding to the discharge end of the housing is open and encloses the aforementioned nozzle and electrodes. Further, the discharge end of the housing includes a vaned turbulator ring of the tapering type for causing the air being discharged between the body and the housing to swirl about and toward the center axis of the housing. Disposed immediately outwardly of the discharge end of the housing is a secondary air turbulance developing plate in the form of an annular member whose inner peripheral marginal portion is registered with the annular spacing between the housing and body and includes further vanes inclined in the same direction as the vanes of the ring and are angularly displaced about the center axis of the housing so as to bridge across the angular spacing between adjacent vanes of the turbulator ring. Also, the nozzle and ignition electrodes are supported within the body for at least slight axial adjustment relative to the latter and the turbulator ring and the turbulator plate is also supported for axial displacement relative to the turbulator ring and body, independent of axial adjustment of the nozzle and the electrodes.
In a fluid fuel burning apparatus, a tubular housing including inlet and outlet ends and adapted to convey combustion air to a combustion chamber with which the outlet end of said housing is communicated, hollow air flow deflecting body means within the outlet end portion of said housing and spaced radially inwardly from the side wall portions of said housing to define an annular air passage between the opposing inner and outer surface portions of said housing and body means, the end of said body means corresponding to the outlet end of said housing being open and having fluid fuel outlet nozzle means generally centered therein and opening outwardly through the open end of said body means, primary turbine vanes supported in and spaced circumferentially about the discharge end of said annular air passage, a flat annular turbulator plate supported from said housing and spaced slightly outwardly of the outlet end thereof, said plate including secondary turbine vanes spaced circumferentially about its inner periphery in registry with the discharge end of said air passage, whereby the combustion air being discharged from said annular air passage will be acted upon first by said primary turbine vanes while still in said air passage and thereafter by said turbulator plate secondary turbine vanes after having been discharged from said passage, means supporting said plate from said housing for limited adjustable shifting along the longitudinal axis of said housing and relative to said fuel outlet nozzle means and the outer peripheral portion of said plate being at least substantially free of air flow passages formed therethrough and extending radially outwardly of the radially outermost portions of the discharge end of said annular air passage, the radial innermost portions of said secondary vanes being spaced closer to the center axis of said annular air passage than the central circumferential zone of said annular air passage.
Claim 2
Dependent Claim
310 words
In a fluid fuel burning apparatus, a tubular housing including inlet and outlet ends and adapted to convey combustion air to a combustion chamber with which the outlet end of said housing is communicated, hollow air flow deflecting body means within the outlet end portion of said housing and spaced radially inwardly from the side wall portions of said housing to define an annular air passage between the opposing inner and outer surface portions of said housing and body means, the end of said body means corresponding to the outlet end of said housing being open and having fluid fuel outlet nozzle means generally centered therein and opening outwardly through the open end of said body means, primary turbine vanes supported in and spaced circumferentially about the discharge end of said annular air passage, a flat annular turbulator plate supported from said housing and spaced slightly outwardly of the outlet end thereof, said plate including secondary turbine vanes spaced circumferentially about its inner periphery in registry with the discharge end of said air passage, whereby the combustion air being discharged from said annular air passage will be acted upon first by said primary turbine vanes while still in said air passage and thereafter by said turbulator plate secondary turbine vanes after having been discharged from said passage, means supporting said plate from said housing for limited adjustable shifting along the longitudinal axis of said housing and relative to said fuel outlet nozzle means and the outer peripheral portion of said plate being at least substantially free of air flow passages formed therethrough and extending radially outwardly of the radially outermost portions of the discharge end of said annular air passage, the radial innermost portions of said secondary vanes being spaced closer to the center axis of said annular air passage than the central circumferential zone of said annular air passage.
Claim 3
Dependent Claim
48 words
The combination of claim 1, whereby said primary turbine blades are circumferentially spaced apart about said air passage, said secondary turbine vanes being equal in number to said primary vanes and being arranged so as to be generally axially aligned with the spacing between adjacent primary turbine vanes.
Claim 4
Dependent Claim
33 words
The combination of claim 1, wherein the outlet end of said air passage is defined between inwardly tapering inner surface portions of said housing and inwardly tapering outer surface portions of said body.