US1719500A - Circulating heater - Google Patents

Description

J. L; BREES, JR 1,719,500

CIRCULATING HEATER July 2, 1929.

Filed Aug. l5, 1927 Patented July 2, 1929.

UNITED STATES 1,719,500 PATENT OFFICE.

JAMES L. BREESE, JR., OF CHICAGO, ILLINOIS, ASSIGNOR' TO OIL DEVICES CORPORA- TION, OF CHICAGO, ILLINOIS, Al CORPORATION OF ILLINOIS.

CIRCULATING HEATER.

Application filed August 15, 1927. Serial No. 212,875.

My invention relates to a hea-ting device and particularly to a hydrocarbon burning heater. One purpose is to provide a simple, convenient, compact burner and heater for 5 home use. Another object is the provision of such a heater which may be safely employed in a dwelling or a room which may safely be closely approached. Other objects will appear from time to time in the course i of the specification and claims.

I illustrate my`invention more or less diagrammatically in the accompanying drawings, Wherein- Figure l is a perspective view;

Figure 2 is a vertical section taken along the line 2 2 of Figure l;

Figure Sis a plan View; and

Figure 4 is a detail showing the supportin g structure;

Figure is a detail of the door.

Like parts are indicated by like symbols throughout the specification and drawings.

A A are angle iron frame members herein shown as forming a square or rectangle with f the supporting legs A1 at the corners. A2

are transverse supporting members upon which is seated the burner proper which in the particular form herein shown includes a base member generally indicated as B. The base member has a more or less concavebottom portion B1 surrounded by the cylindrical upwardly projecting wall B2 from which outwardly projects the circumferential flange B3. B4 is a centering flange upwardly projecting from the flange B3. The upper edge of the wall B2 is circumferentially channeled as at B5. B indicates a lower closure member or shield, spaced beneath the burner base member B and supported on any suitable. means, forA example upon. the frame members A2 by means of the securing bolts BT and spacers BS. It is centrally apertured as at B9, about the lower enlargement or fuel inlet G5 of the base B, to which'is connected the fuel inlet pipe G11 The circumferential flange B3 of the burner member B is provided with air inlet apertures B11.

Mounted on the flange B3 and centered by the flange B4 is the outer drum C. Seated in the channel B5 isthe inner drum C1 which is provided with a number of primary air apertures C2 and has about its upper edge a single row of upwardly and inwardly inclined secondary air apertures G3, herein shown as of greater diameter than the 'primary air apertures. Seated on the upper odge of the drum C1 and extending outwardly over the upper edge of the drum C is the closure ring C4 with the lower centering flange C5 and the upper centering flange C, Positioned thereupon and centered by the flange-C6 is the upper drum C7 which forms a combustion and radiation chamber. It is provided with a cover C8, herein shown as convex and a flue passage C9 in communication with the chimney C1".

Mounted on the channel members A is ,an outer housing formed of the metal sheets D and the reinforcing and connecting corner angle irons D1. Said housing may be preassembled and may be spot weldedor otherwise Asecured together if desired. D2 indicates a cover member therefor having a plurality of transverse air outer apertur's D2.

The side members D may be provided with any suitable air inlet apertures and I illustrate an air inlet member including a sheet of metal DI* provided with the ledges D5 beneath and between which air may flow. The forward member D is cut away as at D6 to admit the passage therethrough of the inlet member C1 outwardly projecting from the drum C7. It is provided with any suitable door C11. Referring to Figure 5 C12 is a perforated piece, or netting, or any other suitable member, having a large number of relatively small holes. C13 is a shield member partially blocking off said perforated member, but penetrated by a cruciform aperl ture C14.

Positioned between the drums C and C7 and the housing member D -is an interme diate shield or housing member E, preferably open at top and bottom in order to per' mit a free flow of air therethrough about the cylinder C and C7.

In order to supply fuel to the burner I may employ one or more fuel tanks G, preferably two, in thefrm herein shown. The details do not of themselves form any part of the present invention. Both tanks preferabl feed to a single vfuel inlet pipe G1 close by a valve G2 controlled by the Valve Irod G3 adapted to be axially moved by' rotationv thereof by means of the handle or lever G2. G5 is a fuel inlet adapted to receive fuel along the line G1 and to deliver it to the bottom portion .B1 of the burner. l

An important Afeature yof my device is the employment of the inflowing air to e001 the bottom of the burner, including the mixing chamber bottom 'B and the supports therefor, and to prevent overheating the floor. I am able to employ my circulating heater in dwelling rooms, over Wood ioors or even over carpets without damage, wing to the fact that the normal inflow of air, upward about the mixing chamber and throughthe space between thegmembers B and B6 has a cooling and heat insulating function. This obviates the using of an insulating support or pad, as is the practice for example with the old line coal burning stoves or heaters.

It will be realized that whereas I have described and shown a practical and operative device nevertheless many changes might be made in the size, shape, number and disposition of parts Without departing from shown aliquid hydrocarbon is supplied to l the lower portion B1 of the burner. It receives a primary air supply through the apertures C2, the hydrocarbon being va 0rizedor gasified in response to the radiant heat of the combustion taking place above. I so proportion the holes C2, or otherwise control the primary air supply, as to form a .relatively completely hydroxylated mixture.

This mixture is incombustible, or receives insuflicient air to support combustion, until it passes upwardly to the level of the seconde ary air apertures C3. Sufficient airrto support combustion is thereby supplied and the mixture is burned oil", combustion taking place largely within the drum C7. The air supply passes upwardly between the supporting members A2, the bottom ofthe stove assembly being open, and the flange Ba be-l ing suitably cut away or formed to permit air to flow into the space betweenthe drum C and C1. The waste products of combustion pass outwardly along the Hue C9 in the usual manner.

Instead ofexposing the drum Gland permitting the air of the room to be heated by radiation I prefer to circulate the air of the room through a restricted space about the heater. The cold air from the bottom of the room is drawn upwardly through the open supporting frame and passes upwardly along the outside of thedrums C and C'. As it passes therealong it is heated and the heated air escapes through the apertures Da of the top f the housing.. By employing the circulation principle a relatively small stove can heat a large volume of air and keeps the air in circulation, thus insuring the adequate and even heatin of large volumes of air and of a relative y large space. In the use of the commercial embodiment of my device, a single circulating heater may be employed to heat two or three adjacent rooms andsince the heated air is thoroughly circulated I avoid the overheating of a body of air about the stove and the consequent discomforts and disadvantages.

In order to cool the exterior housing and to make it safe for use in dwelling I employ the intermediate open ended housing or screen E the interior of which may, if desired, have a reflective surface, in order to reflect back into the upwardly flowing stream of air the heat received. by it from the cylinder C". Air will also flow upwardly through the space 4between the shield E andI the housing members D but in order to prevent such upward stream of relatively cool air from taking ani undulylarge relation to the total circulation of air I position the shield E relatively close to the members D, as shown in Figure 2. Further, to cool the place between the shield E andthemembers D I admit air as at D5, above thevbottom edge of the shield E.

Referring to Figure 5 in the typeof window emplo ed the perforated metal or netting C12 a mits a slight amount of air, and thereby keeps itself clean from soot b the action of the air entering the small oles. The cross-shaped aperture is so designed that the frame can be observed either by squatting down and looking through the horizontal port-ion or else by bending over and looking through the vertical portion.

essential, in a natural draft burner, that the flame be clearly seen while operating under draft conditions. The perforated window above described is sufficient for this purpose and has the advantage, over the well-known mica windows, of being kept entirely free.

from soot by the inllowingalr. v

I claim: 1 1. In a hydrocarbon heater, a combustion chamber and a door therefor, an observation window in said door and an air inlet member in said window having a plurality of 'It is a great advantage, and in fact almost l 3. In a circulating heater a supporting frame 'and feet therefor adapted to spa-ce such fra-me above the surface upon which the heater is Supported, a mixing chamber supported by said frame and means for supplyin a fluid fuel thereto, said mixing w cham r being provided with a closed concave bottom portion, the bottom of said mixing chamber being spaced upwardlyl from said. supporting surface, means for supplying air to said mixing chamber for the formation of acombustible mixture, and means for directing infiowing air about the bottom of the mixing chamber.

4. In a circulating heater a supporting frame and feet therefor adapted tov space Such frame above the surface upon which the heater is supporteda mixing chambel and means for supplying afluid fuel .theref to, the bottom ofV said mixing chamber being i spaced upwardly .from said supporting surface, means for supplying air to said mixf -ing chamber for the formation of a combustible mixture, and means for directing inowing air about the bottom of the mix-v ing chamber, including a shield` positionedbeneath said mixingl chamber and space `therefrom arid means for passing air' y through the space between 'the shieldand the'bottom of the mixing chamber. 5. In a circulating heater a mixing cham-` ber and means for' delivering a'pfluid fuel j' 16. In a' circulating heater a mixing chamber and means for delivering Va fluid fuel thereto, means for spacing said mixing chamber upwardly from the* surface upon which the heater lis supported,-means for delivering air to the mixing chamber and means forf directing 'a flowv of cool air, from without the heater, against said bottom portion, including a shield positioned beneath "the bottom of theA mixing chamber and spaced therefrom, and an air inlet in said shield.

7. In a circulating heater, a supporting frame, a mixing chamber positioned therefrom', means for delivering a fluid fuel to the mixing chamber, means for circulating a' cooling current of air about the exterior of the mixing chamber, and means for de- .I livering air from suchfcooling current to thev mixing chamberA for mixture with the 'fuel therein.

Signed at Chicago, countyl of Cook, and

4Starte'of'Il1inois,this 1st day vofvAugust1 v192 thereto, means for spacing 'said mixing JAMES L. -BREEsE, Jn.

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