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US 4,905,613 AGranted
Fuel feeder
AssigneeDetroit Stoker Company
InventorsDavid C. Reschly, Timothy R. Loviska
Life of this patent
Estimating the term…
Abstract
An air swept fuel feeder for feeding particulate fuel into a furnace and having a closely coupled hopper, fuel metering device and air swept delivery plate. An alternate embodiment is disclosed in which a second fuel is delivered to the furnace by an air swept plate.
Claims23
A feeder for feeding particulate fuel into a furnace having a fuel charging opening, comprising:
- (a) a fuel hopper designed to be maintained substantially full of fuel and having an open lower end;
- (b) a metering device for conveying fuel in a direction towards said furnace, said metering device being disposed immediately below said open lower end of said hopper and arranged to receive fuel therefrom;
- (c) means defining a fuel delivery opening in the side of said hopper nearest said furnace, said fuel delivery opening being disposed immediately adjacent said metering device with the top of said metering device defining the bottom of said opening;
- (d) an adjustable means associated with said metering device for metering the quantity of fuel delivered by said metering device to said furnace;
- (e) a generally horizontally disposed, upwardly facing, slightly concave plate having a first portion disposed generally between said furnace and conveyor and positioned to receive fuel delivered by said conveyor, and a second portion extending into said charging opening, said first portion of said plate being disposed below and immediately adjacent the end of said metering device closest to said furnace;
- (f) an air spout disposed above and adjacent said first portion of said plate, said spout including a nozzle positioned to direct air along the top surface of said plate against fuel delivered to said plate by said metering device to propel same across said plate into said furnace;
- and
- (g) flow control means for supplying air at a continuously varying flow rate to said spout so that fuel is propelled into said furnace over a range of distances.
5 more elements
A feeder for feeding particulate fuel into a furnace having a fuel charging opening, comprising:
- (a) a fuel hopper having an open lower end;
- (b) a metering device for conveying fuel in a direction towards said furnace, said metering device being disposed immediately adjacent said hopper and arranged to receive fuel therefrom;
- (c) means associated with said metering device for metering the quantity of fuel delivered by said metering device to said furnace;
- (d) a generally horizontally disposed upwardly facing, slightly concave plate having a first portion disposed generally between said metering device and said furnace and positioned to receive fuel delivered by said metering device, and a second portion extending through said charging opening, said first portion of said plate being disposed immediately adjacent the end of said metering device closest to said furnace;
- and
- (e) an air spout disposed above and adjacent said first portion of said plate, said spout including a nozzle positioned to direct air along the top surface of said plate against fuel delivered to said plate by said metering device to propel same across said plate into said furnace.
3 more elements
A feeder for feeding particulate fuel into a furnace having a fuel charging opening, comprising:
- (a) a first fuel hopper having an open lower end;
- (b) a metering device for conveying fuel in a direction towards said furnace, said metering device being disposed immediately adjacent said hopper and arranged to receive fuel therefrom;
- (c) means associated with said metering device for metering the quantity of fuel delivered by said metering device to said furnace;
- (d) a generally horizontally disposed upwardly facing first plate having a first portion disposed generally between said furnace and conveyor and positioned to receive fuel delivered by said metering device, and a second portion extending through said charging opening, said first portion of said first plate being disposed immediately adjacent the end of said metering device closest to said furnace;
- (e) a first air spout disposed above and adjacent said first portion of said first plate, said first spout being positioned to direct air along the top surface of said first plate against fuel delivered to said first plate by said metering device to propel same into said furnace.
- (f) a second hopper for refuse derived fuel designed to have metered refuse fuel fall therethrough;
- (g) means defining a second fuel delivery opening at the lower end of said second hopper adjacent said charging opening;
- (h) a generally horizontally disposed upwardly facing second plate having a first portion positioned to receive fuel delivered from said second hopper, and a second portion extending through said charging opening into said furnace, said first portion of said second plate being disposed below said second discharge opening;
- and
- (i) a second air spout disposed above and adjacent said first portion of said second plate, said second spout being positioned to direct air along the top surface of said second plate against refuse derived fuel delivered to said second plate to propel same across said plate into said furnace.
7 more elements
Dependencies are inferred from the claim text.