US2088280A - Heating attachment fob stoves - Google Patents

Description

July 27, 1937. A. scHlLLlNGER 2,088,280

AND THE LIKE HEATING ATTACHMENT FOR STOVES, RANGES Filed Oct. 5. 1935 2 Sheets-Sheet 14 Izumi/110111111111114 July 27, 1937: A. scHILLlNGER HEATING ATTACHMENT FOR STOVES, RANGES, AND THE LIKE Filed Oct. I5, 1935 2 Sheets-Sheet 2 Mllllllm 1 l I 5 i i 5 l l ll l l l i ..r

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NVENTOR.

WAM,

A TTORNEYS.

Patented July 27, 1937 UNITED STATES HEATING ATTACHMENT RANGES, AND THE LIKE FOR STOVES,

Adolph schiluhger, Tulsa, Okla. Application October 3, 1935, Serial No. 43,412

5 Claims.

This invention is an attachment for use particularly on a gas stove or range, but also usable on a coal or wood stove or range, and also usable in connection with a hot pipe, for creating convection currents in the air of a room, for warming the room uniformly.

Where a stove or other type oi' heater is in a room, the heat therefrom will rise to the ceiling and accumulate there in a layer of warm air, While the floor will be covered with cool or cold air. Further, those parts of the room remote from the stove or heater will be many degrees colder than that portion of the room near the stove. The present invention is an attachment for use with a stove for remedying the above condition. 'I'he present attachment is intended to be placed over the burner of the usual gas range, for example, or over one of the openings in the top of a coal or wood stove, or around a vertically disposed hot ue pipe in the room, for creating sufficient pressure and circulation of warm air for causing a very definite lateral or horizontal flow of warm air away from the stove toward the cooler parts of the room. As the attachment of the present invention pushes or throws warmed air into the room, the resulting displacement of the air forces the cold air in the lower part of the room toward the stove where it is drawn up into the stove and through the heater and circulated through the room. As a result of many experiments with the heater of this invention, it has been found that the ordinary room is very satisfactorily heated, even in portions thereof remote from the stove, by reason of the convection currents of warm air created by the heating device of the invention. That is to say, a thermometer placed, say 15 or 20 feet away from the heating attachment, will register as high, or even higher, than thermometers placed to one side of the stove within say 5 or 6 feet thereof.

Another important aspect of the invention is that it enables the ordinary gas, coal or wood stove, which is primarily for cooking, to function efficiently as a heater and heat the room. The ordinary cook stove, of course, does heat the room, but it does not heat it well because, as

stated above, those portions of the room remote from the stove remain rather cold. The usual stove has more than one burner or opening on it and so if a heating attachment according to this invention is placed over one of such burners or openings, the room will be sufficiently heated, and, at the same time, the other burnersv or openings in the stove can be used for the usual cooking purposes. y

In one aspect of the invention the heater is placed around a vertically disposed hot pipe.

This form of the invention creates laterally iow- 5 l ing convection currents, as before, and can be used for heating the room, either alone or in conjunction with a heater placed on top of the stove.

'Ihe ordinary stove, therefore, can be instantly 10 converted into a room heater, while, if it has more than one burner or opening, which is usually the case, it can still function efficiently as a cook stove.

The attachment has no burner as a part there- 15 of, and therefore it is simpler in construction and much cheaper to manufacture, than a heater having a built-in burner.

. 'I'he main features of the invention having been thus described, it will be further illustrated in the accompanying drawingsillustrating the present preferred ways of carrying it out.

In these drawings:

Fig. 1 is a front view of ment;

Fig. 2 is a section on the line showing its use on a gas range;

Fig. 3 is a section on the line 3 3 of Fig. 1;

Fig. 4 is a sectional view similar to Fig. 2, showing a modication for use on a coal or Wood stove;

Fig. 5 is a vertical section similar to Fig. 4, showing the parts in another position;

Fig. 6 is a section on the line 6-6 of Fig. 4

Fig. '7 is a section on the line 'I-l of Fig.` 4; 35

Fig. 8 is a sectional view of a modification for use on a hot pipe;

Fig. 9 is a section on the line 9-9 of Fig. 8; and

Fig. 10 is a perspective View of a securing collar.

Referring now to these drawings, in which similar reference characters indicate similar parts, the attachment comprises a generally rectangular housing 2, the bottom of which is provided with a large opening 4 of a size to fit over 45 a burner 6 of a gas stove, the top of which is shown at 8.

The opening 4 at the bottom of merges into a substantially `vertical passage I0 defined by an inner front wall I2 and an in- 50 ner rear wall Il. 'Ifhe front wall I2 is offset as at I6, then extends vertically and is provided with an outwardly turned lip I8. The passage I0 is further defined by a. rear wall Il which, about half way up, bends smoothly tothe heating attach- 25 2 2 of Fig. 1,

the housing ward the horizontal, as shown at 20, causing delivery of the hot gases through the horizontally disposed discharge aperture 22. Due to the fact that the passage I0 is directly above the -gas flame and is entirely free from bafiies or any obstruction, and due to the smooth curve of the wall 20, the ,relatively large volume of hot gases from the burner 6 are delivered out of the discharge aperture 22 with some pressure and velocity, sumcient to create a very definite laterally owing convection current, which carries the warm air to the more remote parts of the room.

The front of the attachment is double walled, as shown in Fig. 2, a second front wall 24 cooperating with the inner front wall l2 to deilne between them a vertically disposed upwardly extending channel 26 for cool air. Wall 24 is provided, near its lower edge, with one or more inlet openings 28 for the entry of cool air, the amount of which can be controlled by a damper plate 30 which is vertically movable manually by handles 32.

The upper end of the channel 26 opens directly into the stream of hot gases flowing laterally out of passage 22. The flow of hot gases out of 22 over the open upper end of channel 26 creates a suction, eduction or Venturi effect which causes a rapid iiow of cool air up the passage 26. This cool air mixes with the hot gas issuing from 22, most of the mixing taking place outside of the attachment. This is advantageous, because as the cool air coming up channel 26 is warmed by its contact with the hotter gas, it would tend to expand and build up back pressure; but since most of, this mixing takes place outside of the attachment, no such back pressure is created.

The back of the housing is preferably double walled, a second back wall 34, following generally the curvature of the inner wall I4, being spaced from the Wall I4 to form ai second channel 36 for the passage of cool air, which is delivered at 38 at a point just above the discharge aperture 22. This cooler air tends to descend and so will mix with the hot gases from aperture 22, just outside the attachment. The double back wall is provided at its lower edge with one or more openings 40 for the inlet of cool air.

Referring now to the modication shown in Figs. 4 to 7, this form of the invention is particularly for use on a coal or wood stove, the top of which is shown at 42, one of the usual openings in the top of the stove for the stove lid being shown at 44. In this form of the invention, a hinged plate or valve 46, the outer edge of which, when in the closed position, rests on a flange 41, is pivoted at 46, and is provided with a manipulating handle 48. This plate is large enough to close the bottom of the main passage l0, for preventing passage of undesirable combustion gases into Vthe heater. When the plate is closed, as in Fig. 4, it becomes heated and so heats the air inside the passage i0, which hot air passes upwardly as has been described; the sidewalls of the housing are provided with one or more inlet openings 48 for cool air, which openings may be controlled by dampers 50. If the combustion of the fuel in the stove has progressed so that the combustion gases are unobjectionable, the plate 46 may be opened as in Fig. 5.

The usual stove lid may also be put in place in the opening 44, in which case the plate 46 would be kept open as in Fig. 5.

The other features of this form of heater are substantially as in Fig. 2.

Figs. 8 and 9 show modifications for use with a vertically disposed hot ilue pipe. In this form of the invention, the inner and outer walls 52 and 54 are provided with openings 52 and 54 for the passage therethrough of a hot iiue pipe 56 which is preferably arranged vertically. The attachment is placed on the pipe 'by breaking the ilue pipe at one of its joints, such as 58, slipping the attachment down over the 'pipe and securing it in place by a collar 60 which grips the pipe and which is provided with a vertical stud 62 for engaging the upper under part of the inner wall 52, while the other side of the collar 60 supports the inner wall 52 at 64. 'Ihe hot pipe 56 sets up convection currents within the passage ili which pass upwardly in substantially the same way as described in connection with Fig. 2,

while cool air passes upwardly through the channel 26 and mixes with such hot gases. Cool air also passes upwardly and laterally in the pas' sage 36 and mixes with the hot gases from the discharge aperture 22.

The device is preferably made of sheet metal, spot welded, and may be enameled and provided with ornamentation, and a carrying handle, as may be desired.

While the invention has been described in some detail in its present preferred embodiments, it should be understood that the invention is not restricted to these details, but may be carried out in other ways 'as falling within the scope oft the claims.

I claim as my invention:

1. An attachment for creating laterally fiowng convection currents of heated air comprising a hollow housingrthe bottom of which is open to receive warm air, the walls of said housing near the bottom extending substantially vertically, one wall curving inwardly toward the top and flnally closing the upper end of said housing, the opposite wall of said housing having a conduit extending substantially parallel with said wall, an opening in said latter wall near the bottom communicating with said conduit for the passage of cool air and another opening in the same wall vertically arranged near the top thereof to form an outlet for intermixed warm and cool air, said conduit terminating adjacent the upper opening and the inner side of the upper end of the conduit being deflected outwardly toward said upper opening, whereby the cool air passing through the conduit is eicently blended with the warm air issuing from said upper opening in a substantially horizontal direction.

2. An attachment for creating laterally flowing convection currents of heated air comprising a hollow housing, the bottom of which is open to receive warm air, the walls of said housing near the bottom extending substantially vertically, one wall curving inwardly toward the top and iinally closing the upper end of said housing and overhanging the opposite wall thereof, the outer end of said curved wall extending downwardly from the horizontal, the opposite wall of said housing having a conduit extending substantially parallel with said wall and an opening in said wall near the bottom communicating with said conduit for the passage of cool air and another opening in the same Wall vertically arranged near the top thereof to form an outletfor CII intermixed warm and cool air, said conduit terminating adjacent the upper opening and the inner side of the upper end of the conduit being deiiected outwardly toward said upper opening, whereby the cool air passing through the conduit is blended with the warm air issuing from said upper opening in a. substantially horizontal direction, a. second conduit extending along the curved wall of Asaid housing having an opening adjacent the bottom of said housing and another opening inwardly of the upper terminus of said curved Wall whereby cool air passing through said second conduit is directed downwardly at the terminal end of the conduit into positive intermixed relationship with said warm air issuing in a horizontal direction.

3. An attachment for creating laterally ilowing convection currents of heated air comprising a hollow housing, the bottom of which is open to receive warm air, the walls of said housing near the bottom extending substantially vertically, one Wall curving inwardly toward the top and finally closing the upper end of said housing and overhanging the opposite wall thereof, the outer end of said curved wall extending downwardly from the horizontal, the opposite wall of said housing having a conduit extending substantially parallel with said wall and an opening in said wall near the bottom communicating with said conduit for the passage of cool air and another opening in the same Wall vertically arranged near the top thereof to form an outlet for intermixed warm and cool air, said conduit terminating adjacent the upper opening and the inner side of the upper end of the conduit being deilected outwardly toward said upper opening. whereby the cool air passing through the conduit is blended with the warm air issuing from said upper opening in a substantially horizontal direction, a second conduit extending along the curved wall of said housing having an opening adjacent the bottom of said housing extending vertically to permit the entrance of cool air in a horizontal direction to said second conduit,

and another opening inwardly of the upper ter minus of said curved wall whereby cool air passing through said second conduit is directed downwardly at the terminal end of the conduit into positive intermixed relationship with said Warm air issuing in a. horizontal direction.

4. The combination as claimed in claim 1, wherein the curved wall of the housing is provided with an aperture to permit the passage therethrough of a vertically disposed pipe adapted to conduct a heated medium and means for securing said attachment to said pipe in spaced relationship around the same.

5. 'I'he combination as claimed in claim 2, wherein the curved wall of the housing and conduit adjacent the same are provided with an aperture to permit the passage therethrough of a vertically disposed pipe adapted to conduct a heated medium and means for securing said at tachment to said pipe in spaced relationship around the same. ADOLPH SCHILUNGER.

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