US1869763A - Gas heater - Google Patents

Description

ug, 2, 1932. G MCFADDEN 1,869,73

GAS HEATER Filed May 19, 1951 5 Sheets-Sheet l Aug. 2, 1932.

G. H. MGFADDEN GAS. HEATER Filed Maly 19, 1931 5 Sheets-Sheet 3 cut-out portio-n in the base plate Patented Aug. z, 1932 UNITED sTAEs GEORGE H. IIICEAIDDEN,` OF STEU'BENVILLE, OHIO, ASSIGNOR T'OTI-IE OHIO FOUITDRYV AmrENT OFFICE MANUFACTURING COMPANY, OF STEUBENVILLE, OHIO, A CORPORATION ,OF .OHIO

GAS HEATER Application ined May i9, i931. .serial no. 538,436,

My invention relates'to gas heaters and more particularly to those of the radiant type wherein refractory clay elements suchV as burner tubes or radiants are employed for eiecting sui'icient combustion of the fuel and radiation of the heat produced thereby.

One obj ect of my invention is to provide a heater of the type referred to wherein the usual heavy clay backwall is not required.

Another object ofmy invention is toprovde a struct-ure that is of simpleform, and of much lighter weight than various types of heaters heretofore employed.

Still another object of inyvinvention is to provide a heater of generally simplied and improved form.

As shownin the accompanying drawings, Figure 1 is a face view of the heater with some of the elements removed; Fig.2 is an end elevational view thereof; Fig. 3 is a sectional plan viewof the heater; Fig. 4 is a view, on an enlarged scale, taken on the line )lV-#IV of Fig. l, and Fig. 5 shows a modification. i

The heater comprises a metal frame for supporting the burner andthe clay tubes or radiants and the artificial fuel, and includes a metal base plate 6 to the rear cornersof which legs 7 are secured by bolts or screws extending vertically through the corners of the base plate into the legs. The base plate at its forward edge has depending lugs 8 through which bolts 9 extend for the purpose of retaining a hearth plate or face plate 10 in place. f .Y

Front legs 11 are secured to the hearth plate 10 by means of bolts or screws 12, these legs being provided with ribbed or shouldered portions lwnich abutagainst the bottom edge of the hearth plate, andv thel legs are thereby held against pivotal or swinging movement about ltheir attachingbolts 12.

A burner 14 is secured at its ends tothe base plate by means of screws 15. Gras is supplied to the burner from a suitable source through a valve 16, and the burner is provided with a series of burner openings 17 which are disposed opposite to an elongated 6, as shown more clearly in Fig. 3.

End plates18 are secured to the base plate by means of bolts 19 which extend through horizontally-extending ears formed on the bottom edges ofthe end plates. the forward and upper edges of the end plates `are bent outwardly'to form flanges 21 for the purpose short `'height vrelative to the end plates, leav-v .ing a large open space between the end plates,

as'shown more clearly in Figs. 2 and 4.' tAn' intermediate back plate or partition plate 2T' of sheet metal or other suitable material, is disposed between the end plates, and has its bottom edge flanged as shown at 28, whereby it is Lattached to lthe bottom plate 6 vby suitable bolts. The plate 27 is recessed or stepped as shown at 29, for the reception of refractory clay blocks 3l, and at its upper edge, theplate is cut out as indicated at 32, to leave passage space between it and the upper backplate 24 for heated air, which will circulate upwardlyy along the rear face ofthe plate 27 and pass through the open ing at 32. There is therefore less tendency for the plate 27 to vbecome overheated, and the use of a heavy metal plate, or a refractory back wall is thereforel not necessary.

Radiant or burner tubes 34, preferably of clay, and formed fon their faces with proturberances 35 that simulate fuel such vas coal are supported at their lower ends between ribs 37 that are formed on the base plate 6 adjacent to the elongated burner opening vthrough the 'said plate. The tubes 34 have The burner tubes. 34V are disposed mainly.

inistraight lines and attheir upper ends are bevelled. The clayV blocks 31 seat at their forward edges against the rear bevelled walls of the tubes, and loose lumps 38 of clay or other material simulating fuel are placed against the upper ends of the tubes 34, and

5 distributed over the blocks 3l,`and the rear shelf-like port-ion of the plate 2?.

The blocks 31 are provided with radiating projections corresponding to the projections 36 to produce a glowing effect on the lumps 0 of fuel supported thereby. The members 3l could be made integrally with one another, but I prefer to form them in sections, because if one becomes broken, it can be replaced without the necessity of replacing the.

M other blocks 3l, and without the necessity of disturbing more Ythan a few lumps of fuel incase the breakage occurs when the block is in use. The bar 23 vsupports the upper ends of the radiants 34 from tilting outwardly, and may also serve to assist in maintaining the artificial fuel 38 in place.

' Referring to F ig. 5, I show a vertical tube 34a that corresponds to the tube 34, and an inclined tube 40 that is lformed similarly to ,g5 the tubes 34 and 34a, and constitutes a. continuation of the tube 34a'. Loose fuel 38a may be piled on the tubes 40 to increase the simulation lof a coal lire'. The tubes 40 are supported'by the louter ends of the tubes 04a 30 and by a sheet metal plate 27a which is cut away at 32a in a manner similarto the upper edge of the plate 27, to provide for circulation of air behind the plate 27a, The heater structure is otherwise substantially as in Figs. l'to 4.

I Yclaim as my invention 1, Heater structure comprising aframework having a back plate and an intermediate plate disposed between the back plate in and the front side of the heater, the intermediate plate extending from one'end of the heater, the intermediate yplate extending from one end of the heater toward the other end adjacent to the longitudinal medial line thereof, and extending upwardly and rearwardly to the back plate, a burner disposed forwardly of the intermediate plate, and radiating elements disposed above the burner and inproximity to the forward side and so top sides of the intermediate plate, a passageway for air being provided between the uppermost edge of the intermediate plate and the back plate, and the space below the bottom edge of the back plate, being unobstructed to permit circulation of air upwardly along the rear face of the intermediate plate.

2. A gas heater comprising a framework having a base plate, end walls, a back plate,

"il an intermediate plate disposed between the end walls and extending upwardly and then rearwardly from the base plate to the back plate, burner tubes supportedY on the base plate at the front side of the intermediate 05 plate, and artificial fuel elements supported on the rearwardly extending portion of the intermediate plate and against the upper ends of the said tubes.

3. A gas heater comprising a framework havinCr a base plate, end walls, a back plate, an intermediate plate disposed between the end walls and extending upwardly and then rearwardly from the base plate to the back plate, burner tubes supported on the, base plate at the front side of theintermediate plate, radiant blocks supported upon the rearwardly extending portion of the intermediate plate with their forward edges in abutting engagement with the upper ends of the tubes,

and means for directing gases of combustion from said tubes across said blocks.

4. A gas heater comprising a framework having a base plate, end walls, a back plate, an intermediate plate disposed between the end walls and extending upwardly and then rearwardly from the base plate to the back plate, a burner tube supported on the base plate at the front side of the intermediate plate, a radiant block supported upon the rearwardly-exten'ding portion of the intermediate plate with its forward edge in abutting engagement with the upper end of the tube, and meansfor directing gases of combustion 'from said tube across said block.

5. A gas heater comprising a framework having an intermediate plate located between the front and rear sides of the framework, the said plate extending upwardly and then rearwardly, the forward part of the rearwardly-extending portion being offset downwardly for the'reception of a radiant block with its upper surface in substantial alinement with'the rear portion of the plate, and a burner tube disposed below the forward edge of said block, the block and Vthe upper rear portion' of the plate being adapted to support artificial fuel.

6. A gas heater comprising a framework having an intermediate plate located between the front and rear sides of the framework, the said plate extending upwardly and'then rearwardly, Vthe forward part of the rearwardly-extending portion being offset downwardly for the reception of a radiant block with its upper surface in substantial alinementA with therear'portion of the plate, a burner tube disposed below the forward edge 'of said block, the block and the upper portion of the plate being adapted to support artificial fuel, and means for permitting circulation of air through the framework and upwardly along the rear side of the said intermediate plate. j

I-n testimony whereof I, thesa-id GEORGE II. MCFADDEN have hereunto set my hand.

GEORGE l-l. MGFADDEN.

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