Fuel supply system for heater
AssigneeEngineered Air Systems, Inc.
InventorPaul A. Mutchler
Life of this patent
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Abstract
A fuel supply system for a fuel spray combustor nozzle of a portable heater including a pump connected to the fuel spray combustor nozzle on the high pressure side thereof and alternatively connectable on the low pressure side to an on-board fuel chamber storage means or to an off-board storage supply through an actuable valve and solenoid system connected by fluid piping, valves and fittings extending between the on-board nozzle, pump, and storage chambers and toward off-board supply.
Claims13
An improved fuel supply system for a fuel spray combustor nozzle of a portable heater comprising:
- a fuel pump having a low and high pressure side mounted on-board said portable heater, said pump being connected on said high pressure side thereof to said fuel spray combustor nozzle;
- fuel chamber supply means mounted on-board said portable heater including a fuel storage main chamber and a fuel storage auxiliary chamber connected thereto, said fuel chamber supply means being connected to said low pressure side of said fuel pump to allow for on-board deliverance of fuel from said fuel chamber supply means mounted on board said portable heater to said fuel pump;
- separate external off-board fuel supply means communicating with said fuel pump through said auxiliary chamber to allow fuel to be readily delivered from an off-board fuel storage source to said portable heater through said auxiliary chamber and to said pump to said fuel spray combustor nozzle, said auxiliary chamber providing through a vacuum created therein by spent fuel a negative pressure to said external offboard fuel supply;
- and,
- valve means to selectively control introduction of fuel to said pump from either said main chamber independently from said auxiliary chamber or from said auxiliary chamber independently from said main chamber on said on-board fuel chamber supply means or from said separate external fuel supply means through said auxiliary chamber independently from said main chamber.
An improved fuel supply system for a fuel spray combustor nozzle of a portable heater comprising:
- a fuel pump having a low and high pressure side mounted on-board said portable heater, said pump being connected on said high pressure side thereof to said fuel spray combustor nozzle;
- a large fuel storage main chamber and a small fuel storage auxiliary chamber connected thereto, both of said chambers being mounted on-board said portable heater and connected to said low pressure side of said fuel pump
- valve means to selectively control fluid flow to said pump independently from either said main or auxiliary fuel storage chamber;
- external off-board fuel supply means including a quick disconnect valved member connected to said auxiliary chamber to allow fuel to be delivered readily through a single conduit from an off-board fuel storage source through said auxiliary chamber and said pump to said nozzle independently of said main chamber, said auxiliary chamber providing through the vacuum created by spent fuel a negative pressure to said external off-board fuel supply means;
- purge means to purge said system prior to introduction of fuel to said combustor nozzle;
- a first control means to deliver fuel to said combustor nozzle at a variable fuel rate in accordance with a preselected temperature of said portable heater;
- a second control means to limit the amount of fuel delivered to said nozzle in accordance with said heater output temperature;
- and,
- a third control means to maintain a negative pressure in said auxiliary chamber of said on-board fuel chamber means to enhance fuel delivery from said external fuel supply means during said fuel pump operation.
Dependencies are inferred from the claim text.