US1948221A

US1948221A - Liquid fuel stove

Info

Publication number: US1948221A
Application number: US402058A
Authority: US
Inventors: Frederic E Kip
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-24
Filing date: 1929-10-24
Publication date: 1934-02-20
Anticipated expiration: 1951-02-20

Description

Feb. 20, 1934. F, E, KIP 1,948,221

LIQUID FUEL STOVE Filed 001;. 24, 1929 2 SheetsSheet 1 F LL E.

NVENTOR %Y 1 ATTORNEYS Feb. 20, 1934. F. E. KIP 1,948,221

LIQUID FUEL STOVE Filed Oct. 24, 1929 2 Sheets-Sheet 2 A TTORNEYS.

Patented Feb. 20, 1934 UNITED STATES PATENT OFFICE 7 1,948,221 LIQUID FUEL STOVE Frederic E. Kip, Montclair,.N. J.

Application October 24; 1929. Serial No; 402,058

8 Claims.

The present invention relates to an oil burning stove and is a continuation in part of a copending application Serial No. 319,252 filed by me November 14. 1928.

l The invention will be understood by reference to the accompanying drawings in which Fig. 1

is a front elevation; Fig. 2 a vertical section on the plane of the line 2--2 of Fig. 1, on a larger scale; and Fig. 3 is a front view of the stove with the fuel tank and associated parts.

' The stove,'forming the subject matter of the present application has been installed by me in a motor yacht and has been found of great practical utility and safety. The drawings illustrate more or less diagrammatically the general layout and arrangement of the piping system. For the purpose of the present specification I will describe the invention as'it has been installed, but it is to be understood that it is capable of use under conditions other than that prevailing on a yacht.

Referring to the drawings, the numeral 1 designates the frame or casing of the stove, and 2 the oven. A door 3 for the oven is hinged at 20 the bottom to swing into vertical or substantially horizontal position. Three burner units are shown-one below the oven; one within the upper part of the oven and the third above the oven. Each unit may have one or more individual burners and each is preferably provided with a plurality of jet openings such as are commonly employed in cooking stoves.

As the lowermost and uppermost units are similiar, the parts thereof will be designated by the same reference numerals. Each comprises a manifold 4 upon which the burners are supported and to which they are pipe connected. I have shown two

burners

5 and 6 although the invention is not limited to any particular numher which may be mounted upon the manifold. The manifold serves as a receiving chamber for the vaporized fuel from a generator I.

The burners 5, will for convenience of description be referred to as the vaporizer burners, and

the burners 6 as the service burners, although it will be understood that the burners 5 may be used for heating and cooking as well as for the purpose of vaporizing the oil fed to the generator.

The. generator extends longitudinally above and in proximity to the vaporizing burner 5. It is supplied with liquid fuel through a pipe 8 controlled by a needle valve 9. The heat from the said burner is suflicient to vaporize the oil admitted to the generator, the vaporized fuel flowing to the manifold 4 from which it passes to the several burners of the unit.

For the purpose of increasing the flow of fuel from themanifold to the burners I provide a pipe 10, connected with a suitable source of air 6Q under pressure, and controlled by a main valve 11. From pipe 10 branches 12 are lead to the manifolds. These branches terminate in the lower part of the manifold in line with each burner and each is controlled by a manually 5 operable valve 13.

The burner 14 in the upper part of the oven is inverted and receives its supply of vapor from the uppermost manifold 4 through a connection 15 leading to a manifold 4. The air supply for .burner 14 is through a branch 12' controlled by a manually operable valve 13'. A valve 15" controls the connection 15 leading to the oven burner 14.

The starting device comprises an open-ended tube 17 controlled by a needle valve 18. Oil is delivered to tube 17 through a branch pipe 8. When valve 18 is opened, a small quantity, of 'oil will be delivered to a priming cup 19. Upon igniting such oil the tube 1'7 will be heated, thereby vaporizing the oil in the tube.

The issuing vapor being ignited will heat the generator 7 to vaporize the oil therein. After the burner 5 has been started, valve 18 is closed and thereafter the heat from the burner 5 will effect the vaporization of the oil in the generator. If the service burner 6 or others like it as well as the oven burner 14, are to be used, the vaporized fuel from the manifold will be admitted through their individual valves 20 and 15' respectively.

The bottom of the stove is made up offtwo sheets of metal 21 with a layer22 of asbestos between them. This bottom is removable, being supported by a ledge 23 arranged about the oven.

The oven is also provided with a tray24 adapted to be supported upon two of the ribs 25 arranged upon the side walls of the oven. A grill 26 having legs 26' is also adaptedto be supported upon a pair of the ribs 25. H

The internal arrangement of the ovenwith the described arrangement of the burners is advantageous for many purposes and permits the use of the stove for all culinary purposes. By removing the base 21 the lowermost burner may be used for boiling, making with the topmost burners two boiling units in a stove not over 24 inches wide. When it is desired to broil, the burner 14' is utilized. The meat to be broiled is placed on the grill 26 so as to receive the heat from the downwardly directed flame from the burner. The grill may be placed as near or far away from the burner as may be desired. The meat juices escaping during the broiling are received in the pan 24 and may be subsequently utilized.

To avoid any possibility of danger resulting from the lowermost burner becoming extinguished, I provide a mirror 27 pivoted near the base of the stove frame and so positioned as to give a clear view of the lower burner. Should the flame become extinguished the condition may be readily observed by means of the mirror and the precaution taken of either re-igniting the fuel or closing the supply valve. 7

From the foregoing it will be seen that myinvention contemplates a stove adapted to utilize liquid fuel, such as gasoline, under the most favorable conditions. are self-contained, that is, each has its individual generator for vaporizing the fuel, and

separate valve controlled pipes for admitting air under pressure at will to theseveral burners.

An important feature of the invention resides in the fact that an extremely hot and clean flame may be produced at the service burners. This is made possible because of the fact that the quantity of vaporized fuel and air may be accurately regulated by properly adjusting the valves in the air and fuel pipes to effect the proper mixture to give complete combustion of the fuel without soot. When an extra hot flame is desired the control valves are so adjusted that the mixed air and fuel will issue from the jet openings with great force giving the resulting flame What may be termed a blow-torch effeet, in which case it will rise with great force high above the burner and be blue and clean. Because of the fact that the air which is supplied to the manifold comes from a storage tank its flow is even and under considerable pressure and the result is a steady flame regardless of its height.

The fuel for the stove is stored in the main tank A located remote from the galley. From this tank it is fed, as may be required, to auxiliary tanks B and C of relatively small size. When the system is installed in a boat or yacht the tanks 13 and C may be located in the galley and by making them of a limited capacity in practice, one gallon only, danger is practically eliminated. A'pipe 30, having a valve 31 and branches 32 and 33 connect the main storage Pumps indicated at 34 and 35 are interposed in the branches 32 and 33. These may be of any approved type but I prefer an automatic electric pump of known construction because of its many advantages in situations requiring a fuel and air tight supply system. These pumps are controlled by current from a source 36 arranged in circuit 37 having switches 38 and 39.

Each of the tanks B and C is provided with a pressure gauge'40, and a hand pump 41 for pumping air into the tank to create a pressure upon the surface of the fuel to maintain a cer- The several burner unitsthe switch 38. When sufficient fuel has been fed to the tank, as indicated by gauge 43, switch 38 is opened and valve 44 closed. The hand pump is then operated to introduce sufficient air pressure upon the surface of the fuel to feed the latter to the burners.

The mode of filling tank 0 will be readily understood from the above description, and need not be completed, the parts being correspondingly numbered. Of course, if desired both tanks Band C may be filled at the same time.

I It will be noted, that in the described system' the inflammable fuel is confined and 'moved within strong metal pipes with no possibility of the escape of vapor. Safety is secured to such extent that either one of the tanks may be filled while the burners of the other tanks are ignited.

The burners each of which has a plurality of jet openings are of known construction, except for the addition hereafter described. The supply of fuel to the generators '7 of the burners is through

branches

8 and 8, these branches being controlled by valves 18.

To secure complete combustion of the fuel I provide means for admitting air under pressure directly to the burner manifold. For this pur pose the system includes a tank 49 and pump 50 for supplying air under pressure to the tank.

The pump is operated by an electric motor 51 connected to the pump by belt 52. In the motor circuit is a switch 53 adapted to be opened and closed by a pressure regulator 54. When the pressure reaches the desired maximum the switch will be opened to stop the pump. When the pressure falls to a predetermined minimum the switch will be closed to start and maintain the pump in operation until the maximum is reached. A gauge 55 indicates the pressure in the tank. In practice the pressure may vary from approximately 40 lbs. per square inch as a minimum to a maximum of 80 lbs.

A pipe 56 having a branch 57 leads from tank 49 to the upper burners, and a branch 53 to the lower burners. The amount of air admitted is controlled by suitable valves 13 13 which may be manually adjusted until the character of flame indicates proper proportions of fuel and air.

What I claim is: r

1. Means especially constructed and adapted for use in a domestic cooking stove for generating and burning vaporized fuel, comprising a source of liquid fuel, a vaporizer including a burner connected to said source and valve controlled means for regulating thefuel fed to the vaporizer, a manifold pipe-connected with the vaporizer, one or more service burners supported upon and pipe-connected to the manifold, and each having a plurality of jet openings, a storage supply of air under pressure pipe-connected with the manifold and having branches, one terminating below and in line with each of the pipes leading from the manifold to the burners, and separate manually controlled valves at each of the service burners for regulating at will the quantity of pressure air and fuel to be mixed and fed thereto, whereby a substantially sootless blue flame of variable pressure may be provided at the said burner.

2. Means especially constructed and adapted for use in a cooking stove for generating and burning vaporized fuel having in combination, one or more service burners of the conventional cooking stove type, each provided with a plurality of jet openings, a vaporizer including a burner and valve means for supplying liquid fuel thereto, a starter for the vaporizer, a manifold constituting a mixing chamber to which the vaporized fuel is delivered, said burners being pipe connected with said manifold, a storage source of air under pressure, a pipe connection from said source to said burners to supply pressure air to the vaporized fuel directly as the latter is admitted to the burners, and separate manually controlled valves operable at will for independently regulating the amount of the air and fuel fed to the service burners, whereby a substantially sootless blue flame of variable pressure may be produced at said burners.

3. In combination with a cooking stove having a conventional cooking top and one or more operatively associated service burners each provided with a plurality of jet openings, a vaporizing burner having a generator operatively connected therewith, and means for supplying liquid fuel thereto having a control valve, a manifold constituting a mixing chamber connected to said generator and to which the vaporized fuel is delivered, said burners being supported upon and pipe-connected with said manifold, a storage tank for air under pressure, pipe connections leading from said tank to said manifold and connected thereto below and in line with the pipe connections between the manifold and the burners, and separate manually operable valves for regulating at will the quantity of pressure air and fuel delivered to each service burner.

4. In combination with a cooking stove having a conventional cooking top and a plurality of operatively associated service burners each provided with a plurality of jet openings, a vapor generator including an associated burner and manually operable valve means for supplying liquid fuel to the generator, a manifold constituting a mixing chamber to which the vaporized fuel is delivered, said burners being pipe connected with said manifold, a storage source of air under pressure, a pipe connection from said source having branches leading to said manifold to supply air to the vaporized fuel directly before its admission to the burners, and

separate manually controlled valves at each of the service burners for regulating at will the quantity of pressure air and fuel fed thereto, whereby a substantially sootless blue flame of variable intensity may be produced at the several service burners.

5. In combination with a cooking stove having a conventional cooking top and a plurality of operatively associated burners therebelow each provided with a plurality of jet openings, a vapor generator and a starter associated with one of the burners and manually operable valvecontrolled means for supplying liquid fuel to said generator and starter, a manifold constituting a mixing chamber to which the vaporized fuel is delivered, said burners being supported upon and pipe connected with said manifold, a

storage tank for air under pressure, a pipe connection from said tank having branches leading to said manifold and each branch terminating below and in line with a pipe connection leading to its associated burner, and separate manually operable valves for regulating at will the quantity of pressure air delivered to each burner.

6. In combination with a cooking stove having a conventional cooking top and a plurality of operatively associated service burners each provided with a plurality of jet openings, a vapor generator associated with one of the burners and valve-controlled means for supplying liquid fuel thereto, said vaporizer being located above and in proximity to one of said burners, a manifold constituting a mixing chamber to which the vaporized fuel is delivered, said burners being supported upon and pipe-connected with said manifold, a storage tank for air under pressure, a pipe connection from said tank to said manifold having branches to supply regulated quantities of compressed air to the vaporized fuel before its admission to the burners, and separate manually operable valves in each branch pipe for regulating at will the quantity of pressure air supplied to each burner, whereby a substantially sootless blue flame of variable intensity may be produced at the burners.

7. A domestic cooking stove adapted to burn vaporized fuel, having in combination a conventional top and a plurality of operatively associated burners each provided with a plurality of jet openings, a vapor generator associated with one of the burners and manually operable valve means for supplying liquid fuel thereto, a manifold constituting a mixing chamber to which the vaporized fuel is delivered, said burners being pipe-connected with said manifold, a storage tank for air under pressure, a pipe-connection from said tank having branches leading to said manifold and each branch discharging into its associated burner, and separate manually operable valves in each branch for regulating at will the quantity of pressure air delivered to each burner, whereby a substantially sootless blue flame of variable intensity may be produced at the burners.

8. A domestic cooking stove adapted and constructed to generate and burn vaporized fuel, having in combination a conventional cooking top and an oven, a plurality of operatively associated service burners each provided with a plurality of jet openings and one of which burners is inverted and located in the oven of the stove with its jet openings directed downwardly, a vapor generator associated with a burner and manually operable valve means for supplying liquid fuel thereto, a manifold constituting I a mixing chamber to which vaporized fuel is delivered, said burners being supported upon and pipe-connected with said manifold, a pipeconnection from the manifold to the oven burner, a storage tank for air under pressure, a pipeconnection from said tank having branches one leading to each of the burners and each branch discharging into its associated burner, and a separate manually operable valve in each branch pipe at each service burner for regulating at will the quantity of pressure air and vaporized fuel delivered thereto, whereby a substantially sootless blue flame of variable intensity may be produced at any or all of the service burners.