US1596562A - Fuel-feed means for oil burners - Google Patents

Description

-c. UEBELMESSER v FUEL FEED MEANS FOR OILBURNERS Filed June 1. 1925 YINVENTOR w v BY 7 7/10;

5 ATTORNEY Mada/Q Patented Aug. 17, 1926.

nsirso STATES CHARLES 'UEBEL'MESSEE, OJ? YORK, N. Y.

FUEL-FEED LVIEANS FOB OIL BURNERS.

Application filed June 1, 1925.

hf Y improvements relate to what may be designated as a preheating pressure system for feeding liquid hydro-carbon fuel to burners of the type set forth in my concurrent application Serial No. 722,220 filed June 25th 1924:, in which vaporization is effected as a. preliminary to combustion in a manner well known in a general way in the art as related to, the heating of steam boilers, and for analogous purposes, the object of my present invent-ion being to attain more perfect combustion and complete utilization of the calorific value of the hydro-carbon oil used as fuel. Heretofore it has been the practice in the art to preheat the fuel oil by means of apilot light to vaporize the oil preparatory to the starting and operation of the burner, and a separate air pressure system has been essential to the fuel feed. My present improvement consists in the provision of electric pro-heating means, and an automatic pressure system of fuel feed as hereinafter fully set forth,the invention consisting essentially in the specific combination and arrangement of parts, devices and appurtenances described and claimed.

In the accompanying drawings I illustrate, diagrammatically, a practical embodh ment of the essential features of my new system and apparatus as applied to an oil burner of the type designated in my aforesaid concurrentapplication Serial No. 722,- 220, although I do not limit myself to the identical form, construction and arrangement of component parts of the system shown by way of exemplification. since changes may be made in minor details, and equivalent mechanical expedients resorted to with like results, and without departing from the spirit and intent of my invention in this respect. I

Referring particularly to the left hand portion of the diagram, which shows a top view of a fuel oil burner of the character designated, B, represents the grate plate and.

Z Z the bars thereof. Interposed between the expansive vaporizing chamber V, and the check valve e and the source of liquid fuel supply a), is the serpentine coil pipe 0 extending in circular and substantially horizontalalignment above vand parallel to the said grate plate B, the preliminary vaporization of the liquid hydro-carbon fuel being effected in said coil Q2 and completed in the expansive vaporizing chamber V, pre- Serial No. 33,982;

paratory to the introduction of the resultant gas into the grate chamber, as fully set in said concurrent application, the novelty in this connection in the present application, in so far as'the burner is concerned, being the interposition in the said vaporizing coil '0 of an expansive pressure chamber 3), connected by a. back pressure pipe p, with an oil supply tank S, 39 being a check valve interposed in said back pressure pipe 2'), adjacent to the said tank S, and between it and a pressure reduction valve r, interposed in said back pressure pipe go, between said check valve 72 and the expansion chamber 29, said pressure reduction valve r, being connected by a pipe r with the lower portion of the tank S, as illustrated in theright hand portion of the said diagrammatic view, it being understood that the parts therein shown other than the burner B, and its immediate connect-ions are shown in vertical plane, or substantially so, for convenience of exemplification.

Thus, I, represents a vertical sectional elevation of an initiatory heating tank interposed between the supply tank S, and the burner B, a pipe 2', in'whic'h is interposed a check valve 2", connecting the bottom of said initiatory heating tank I, with the bottom of the fuel supply tank '8, and the upper part of said initiatory heating tank I, being pipe-connected with a pressuregauge i The induction end 4), of the fuel supply pipe o,extends down axially into the said initiatory heating tank I, and is provided with a hand control valve o for regulating the amount of fuel .oil passing through the conduit 0, to the burner B, after the fuel feed'to the burner is started as hereinafter setforth.

2' is a bypass pipe connecting the upper part of the. initiatory heating tank I, with the main extension of the fuel supply pipe 11", and having interposed in it a pressure checlevalvec' which yields to admit vapor under pressure from the upper portion of the initiatory heating tank to the burner supply pipe o, but counteracts back pressure from said burner supply pipe o", to the initiatory heatingtank I.

Within the latter is positioned an electric resistance coil 6, interposed in an electric circuit of which the battery E, or other source of electricity forms a part, 6, being a symbolic representation of aswitch of well known type controlling the circuit, in which latter is also interposed a spark plug 0 positioned with the area of the burner B.

Normally the levels of liquid fuel in both supply tank S, and initiatory heating tank I, are substantially identical owing to the gravity feed therebetween. When it is desired to start fuel feed to the burner 13, the hand valve o is closed, cutting off temporarily the induction extension 11, of the burner supply pipe 12, and the electric switch 6, is then closed. As a result, the resistance coil 6, in said initiatory heating tank I, ra ses the temperature of the hydrocarbon oil therein, sufficiently to create vapor under pressure which escapes through the bypass 2' and check valve i into and through the burner supply pipe '0, to the burner B, where said initiator-y vapor escaping through the perforations in the grate bars I), Z), is ignited by the sparx plug 6 after which the hand valve o may be opened, and the electric circuit opened also, by means of the switch 6. Under these conditions the feed of liquid fuel is then established through the inductive extension 1), of the burner supply pipe 4), through the latter to the preliminary vaporizing coil v-, and thence to the expansive vaporizing chamber V, and its appurtenances in the burner B, as heretofore.

Vapor pressure incidentally existent in the auxiliary expansive chamber 29, is transmitted through the back pressure pipe 79, to the space in the fuel supply tank S, above the liquid level therein, to promote the feed therefrom; and if this back pressure is excessive it is relieved by means of the pressure reduction valve 1", and pipe 1", communicating with the bottom of the supply tank S, without interference with the continuous normal feed to the burner B, through the medium of the pipe 4, initiatory heating tank I, and feed pipe 4).

It will be seen that distinctive features of my present invention consist in the electrical pre-heating of the preliminary or pre paratory feed of fuel to the burner, and in the automatic pressure feed attained by means of the auxiliary expansion chamber p, in the vaporizing coil 12 as herein set forth, whereby preliminary vaporization and feed is established expeditiously and with certainty, and a continuous uniform feed insured thereafter, dispensing with the necessity for the supplemental air pressure system of feed heretofore resorted to.

What I claim as my invention and desire to secure by Letters Patent, is

1. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing cham ber and preliminary heating coil connected therewith, an initiatory heating tank the lower portion of which is pipe-connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a bypass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiator-y heating tank, an electric resistance coil in the latter and means for electrically energizing said resistance coil, for the purpose and substantially in the manner set forth.

2. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamber and preliminary heating coil connected therewith, an initiatory heating tank the lower portion of which is pipe-connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a by-pass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, an electric resistance coil in the latter and means for electrically energizing said resistance coil, together with a spark plug positioned in said burner and in parallel electric circuit with the electric resistance coil in said initiatory heating tank, and a switch controlling said electric circuit, substantially in the manner and for the purpose set forth.

3. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamher and a preliminary heating coil connected therewith, an auxiliary expansion pressure chamber interposed in said preliminary heating coil, a back pressure pipe connecting said auxiliary expansion pressure chamber with the upper portion of the main oil supply tank, an initiatory heating tank the lower portion of which is pipe-connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a bypass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, an electric resistance coil in the latter, and means for electrically energizing said resistance coil, for the purpose and substantially in the manner set forth.

4. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamber and a preliminary heating coil connected therewith, an auxiliary expansion pressure chamber interposed in said preliminary heating coil, a back pressure pipe connecting said auxiliary expansion pressure chamber with the upper portion of the main oil supply tank, an initiatory heating tank the lower portion of which is pipe connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a bypass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, an electric resistance coil in the latter, and means for electrically energizing said resistance coil, together with a spark plug positioned in said burner and in circuit with the electric resistance coil in the said initiatory heating tank, and a switch controlling said electric circuit, substantially in the manner and for the purpose set forth.

5. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamber and a preliminary heating coil connected therewith, an auxiliary expansion pressure chamber interposed in said preliminary heating coil, a back pressure pipe connecting said auxiliary expansion pressure chamber with the upper portion of the main oil supply tank, a pressure reduction valve and pipe connecting said back pressure pipe with the lower portion of said main oil supply tank, an initiatory heating tank the lower portion of which is pipe connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a bypass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, an electric resistance coil in the latter, and means for electrically energizing said resistance coil, for the purpose and substantially in the manner set forth.

6. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamber and a preliminary heating coil connected therewith, an auxiliary expansion pressure chamber interposed in said preliminary heating coil, a back pressure pipe connecting said auxiliary expansion pressure chamber with the upper portion of the main oil supply tank, a pressure reduction valve and pipe connecting said back pressure pipe with the lower portion of said main oil supply tank, an initiatory heating tank the lower portion of which is pipe-connected with the lower portion of the main oil supply tank, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a by-pass pipe and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, an electric resistance coil in the latter, and means for electrically energizing said resistance coil, together with a spark plug positioned in the burner and in parallel electric circuit with the electric resistance coil in the said initiatory heating tank, and a switch controlling said electric circuit, substantially in the manner and for the purpose set forth.

7. Fuel feed means for an oil burner of the character designated, comprising a burner provided with a vaporizing chamber and a preliminary heating coil connected therewith, an auxiliary expansion pressure chamber interposed in said preliminary heating coil, a back pressure pipe connecting said auxiliary expansion pressure chamber with the upper portion of the main oil sup ply tank, a check valve in said back pressure pipe, a pressure reduction valve and pipe connecting said back pressure pipe with the lower portion of said main oil supply tank, an initiatory heating tank, the lower portion of which is pipe-connected with the lower portion of the main oil supply tank, a check valve interposed in said pipe connection, a burner feed pipe connected with the upper portion of said initiatory heating tank and having an inductive end portion extending thereinto, a hand valve connected with said inductive portion of the burner feed pipe, a bypass and pressure check valve interposed between said burner feed pipe and the upper portion of the said initiatory heating tank, a check valve in said burner feed pipe positioned adjacent to the burner, an electric resistance coil in said initiatory heating tank, and means for electrically energizing said resistance coil, together with a spark plug positioned in said burner and in parallel electric circuit with said electric re sistance coil in the initiatory heating tank, and a switch controlling said electric circuit, substantially in the manner and for the purpose set forth.

CHARLES UEBELMESSER.

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