US1263654A

US1263654A - Fuel-control system for burners.

Info

Publication number: US1263654A
Authority: US
Inventors: William A Doble
Original assignee: DOBLE LAB
Current assignee: DOBLE LABORATORIES; DOBLE LAB
Priority date: 1917-11-26
Filing date: 1917-11-26
Publication date: 1918-04-23
Anticipated expiration: 1935-04-23

Description

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To all whom it may concern."

Be it known'that ll, mnmn A. Donna, a citizen of the United of the cit and county of San Francisco, State of alifornia, have invented a certain new and useful Fuel Control System for Burners, of which the following is a specification.

The invention relates to devices for controllin the flow of fuel to burners, and particular y to burners which include an electric motor in their operating mechanism.

An object of the invention is to provide means for stopping the flow of fuel to the burner when the electric circuit is opened or when the current in the circuit decreases beyond a predetermined value.

A further object of the invention is to providemeans for simultaneously opening the fuel line and closing the ignition circult.

The invention possesses other advantageous features, some of which, with the foregoing, will be set'forth at length in the following description where I shall outline in full that form of the invention which have selected for illustration in the drawing accompanying and forming part of the present spec1 catlon. In said drawing ll have shown one specific form of my invention, but it is to be understood that do not limit myself to such form, since the invention as expressed in the claims may be embodied in a plurality of forms. In the drawings T have shown my invention applied to a rotary burner in which the fuel is atomized by a rotating element to which the blower for supplying air for combustion is attached, so that both are rotated by the same motor, but it is to-be understood that the invention is equally applicable to all types of burners in whlch an electric motor is used,' either to atomize the liquid or to introduce the air for combustion.

Referring to said drawingsz' Figure 1 is a partly diagrammatic representation of the fuel control system of my burner.

modified form of the system.

.The burner consists of a casing a rotating element or on 3 therein for producin a fuel spray,- whlch is driven-by the electric meter 4, through the sh 5. e-

States, and a resident burner and the 'mediately falls, stopping '2 having cured to the shaft below the cup is a blower which is rotated by the motor to induce the necessary air for combustion into the canng. A spark plug 6 or other ignition device 1s arran ed in the casing for igniting the combusti 1e mixture.

Fuel is fed to the burner from the supply tank 7 through the conduit 8, and a pp 9 arranged in the conduit andconnected to the she 5 operates as a meter to measure the fuel fed to the burner in proportion to the speed of the motor. Means are rovided for opening and closing the conduit as the motor circuit is closed and opened.

Arranged in the conduit 8 between the I pump 9 and preferabl close to the burner, is a valve casing 12 aving an inlet passage 13 and an outlet passage 14:, formed at the bottom of the casing. Arranged in the casing is an iron core or plunger 15 provided on its lower end with a valve 16 adapted to seat in and close the outlet passage 14. Connectin the upper end of thevalve casing with the conduit 8 on the tank slde of the pump is a by-pass conduit 17, and the core 15 is provided on its upper end with a valve 18 adapted to seat in and close the opening of the conduit 17 into the casing. The core 15 is so constructed that the fuel may flow through the casing past the core, either by making the core smaller in diameter than the casing or by providing the core with passages 19. Surrounding the casing is a solenoid 21 which, when energized, raises the core, unseating' valve 16 and seating valve 18, permitting the fuel to flow to the burner. When the circuit through the solenoid is opened, the core imthe flow of fuel to the burner and causing it to flow through the by-pass conduit 17. The solenoid 21 is connected in series with the battery 22, the motor 4 and the control switch 23. Connected in parallel with the motor is' a rim fuel which is subsequently pumped by the pump, due to the momentum of the motor and the cu 3, is diverted through the by pass condult. When the burner 1s used in connection with a steam boiler operating under. widely varying loads, as in a motor vehicle, which is provided with means for automatically opening and closing the motor circuit in accordance with variations in boiler conditions, the device ofmy invention operates to shut off the fuel instantly and thereby permits of a close regulation of the casing by the pump flows out through the b -pass.

I c alm: v

1. The combination with a liquid, fuel burner, of an electric motor operatively associated therewith, a circuit for said motor, a conduit through which fuel is conve ed to said burner, a pump in said conduit, e ectrically operated means in said conduit between the burner and the pure and connected to said circuit for controllmg the flow,

of fuel through said conduit and a conduit connectin said means with said first con duit on t e intake-side of the pump,

2. The combination with a liquid fuel burner, of an electric motor operatively associated therewith, a circuit for said motor,

.aconduit through which fuel is conveyed to said burner, a pump in said conduit, an electrically operated valve in said conduit between the pump and the burner, and a byon the intake side of the pump. v

3. The combination wlth' a liquid fuel burner, of an electric motor operatively associated therewith, a circuit for said motor,

a conduit through which fuel is conveyed 'to said burner, a pump in said conduit, a valve in said conduit, a by-pass connecting said valve with the conduit-Yon the intake side of the pump and a solenoid associated .with said valve and connected to said circuit. a

4. The combination with a liquid fuel burner, of an electric motor operativelyassociated therewith, a circuit for said motor, a conduit through which fuel is conveyed to said burner, a pump in said conduit, a valve casing in said conduit between the burner and the pump, a by-pass connecting the valve casing with the conduit on the intake side of the pump, a valve in said casin for controlling the flow of fuel to sai noid associated with said va ve.

5. The combination with a liquid fuel burner, of an electric motor operatively associated therewith, a circuit for said motor a conduit through which fuel is conveyed to sald burner, a pump in said conduit, a valve casing in said conduit between the burner and the pump, a by-pass connecting the valve casing with the conduit on the intake side of the pump, a valve in said casing adapted in one position to stop the fiowjof fuel to the burner and in the other osition to stop the flow of fuel through the y-pass, and a solenoid associated with said valve and connected to said circuit.

In testimony whereof I have hereunto set my hand at San Francisco, California, this 17th day of November," 1917.

- WILLIAM A. DOBLE. In gresence of G. Pnos'r.

pass connecting said valve with the conduit -burner and through said byass and a sole-