US2460263A - Kitchen range - Google Patents

Description

Jan 25, 1949. O QLLERT I 2,460,263

KITCHEN RANGE Filed Nov. 5, 1945 JNVENTOR. OLOF OLLERT ATTORNEY Patented Jan. 25, 1949 Olof Ollert, Stockholm, Sweden Application November 5, 1945, Serial No. 626,874 In Sweden November 11, 1944 1 Claim.

My invention relates to kitchen ranges, more particularly of the type having continuous combustion and provided with one or more cooking plates. The flue gases are directed against said plate from the furnace through a tubular member projecting downwardly toward the furnace. The gases are deflected over the upper end of t tubular member to a channel extending around the tubular member. This system ensures that the heat radiation from the furnace as well as the combustion gases escaping therefrom are directed directly against the point of heat output where they give off their heat. However in longtime tests performed on a range of this type it was found, inter alia, that the tubular member tended toward oxidation and the formation of scales through the high temperature produced, these drawbacks causing an unsatisfactory transfer of the heat. My invention has for its main object to eliminate this disadvantage and moreover to provide a range of high heat economy and a maximum of heat-delivering capacity from the upper surface of the plate.

Further objects and advantages of my invention will be apparent from the following description considered in connection with the accompanying drawing which forms a part of this specification and which illustrates a kitchen range in cross section.

The combustion chamber 3 of the range shown in the drawing is bounded by a casing 2 provided with an inner lining l of refractory material. Laterally of the chamber 3 there is arranged a fuel magazine 4 with an upper portion 5 having a filling opening 5 covered by a lid I9. The magazine 4 is formed with a wall I sloping toward a fuel opening 8, through which the fuel enters the furnace and is brought onto the grate 9. The combustion air enters through an intake I2 to the ash pit I0 having a door II. The quantity of the air is controlled by means of a plate l3 actuated by a thermostat regulator (not shown) in a manner known per se.

A tubular member l4 projects into the chamber 3 through a jacket tube iii and is integral with a flange 2| extending downwardly from and integral with a cooking plate l5. The lower side of this plate facing the upper and preferably narrower mouth of the member I 4 is curved upwardly and sideways from the centre of the plate.

The flange 2| of the cooking plate i5 forms the outer wall of an annular passage 18 extending around the upper portion of the member 14. The gases flowing toward the cooking plate through the tubular member M are deflected into the passage 18 while passing over the edge of the mouth of said member, in order then to flow out into the flue I! made integral with the jacket tube it. The flange 2| merges into the tubular member H3 at a distance from the upper edge of the latter. Extending outside the annular passage i8 and on a level with the latter or the upper part of the flange 2| is an annular shoulder 22, by means of which the unit consisting of the cooking plate 15, .the flange 2| and the member l4 rests on a corresponding supporting surface of the jacket Hi. In order that the flue gases shall not flow from the upper end of the member l4 directly out through the flue ll, the annular passage IB is interrupted in front of the flue by a partition 20 united with the cooking plate [5 and the upper portion of the member I4. Furthermore, the tubular member M has a flange 23 resting against the jacket I 6 below the flue ii, an intermediate layer 24 of packing material being provided between the flange and the jacket. A ring 25 of packing material prevents the gases from finding their way out between the jacket i 5 and the casing 2.

It will thus be seen that there is provided an uninterrupted path for flow of heat from the tubular member I 5 through the flange 2! to the plate I5 and, inasmuch as all of these parts are integral with each other, there are no joints through which flow of heat might be interfered with by the formation of scale.

While one more or less specific embodiment of the invention has been shown, it is to be understood that this is for purpose of illustration only, and that the invention is not to be limited thereby, but its scope is to be determined by the appended claim.

What I claim is:

In a stove means forming a combustion chamber, a metal cooking plate disposed above said chamber, a tubular fiange integral and extending downwardly from said plate, a tubular member spaced from said combustion chamber and integrally connected circumferentially at an intermediate point thereof to the lower end of said flange, the lower portion of said tubular member extending into said combustion chamber and the upper portion of said member being of less diameter than said flange and extending upwardly within the flange and spaced therefrom to form therewith an annular passage, the upper end of said upper portion being spaced below said plate to provide communication between the interior of said tubular member and said annular passage, said plate having a supporting surface radially outside said flange and substantially at the same level as the upper end of said tubular member, and a flue connected to said annular passage.

OLOF OLLERT.

REFERENCES orrnn The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,090,903 Sandberg Aug. 24, 1937 2,150,970 Hallstrom Mar. 21, 1939 10 2,255,877 Dalen Sept. 16, 1941 FOREIGN PATENTS Number Country Date 950 Sweden Feb. 6, 1887 96,609 Sweden June 21, 1939 108,984 Australia Nov. 1, 1939

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