US2517071A - Radiant gas stove with transparent air chimney - Google Patents

Description

4 Sheets-$heet 2 DE WITT H. WYATT RADIANT GAS STOVE WITH TRANSPARENT AIR CHIMNEY Filed Sept. 18, 1946 Aug. 1, 1950 r.. .T w m w Y V W n l l. H T H W e D @E mq mw Nw Attorneys Aug. l, 1950 DE wl'rr H. wYATT RADIANT GAS STOVE WITH TRANSPARENT AIR CHIMNEY Filed sept. 1s, 194e 4 Sheets-Sheet 3 FIG.

FIG. Il

FIG. I3.

DeWITT H. WYAT T A'rorneys Aug. l, 1950 DE wlTT H. wYATT RADIANT GAS STOVE WITH TRANSPARENT AIR CHIMNEY Filed Sept. 18, 1946 4 Sheets-Sheet 4 Attorneys Patented Aug. 1, 12950 BADIANT GAS AIR STOVE WITH TRANSPARENT CHIMN EY De Witt H. Wyatt, Nashville, Tenn. Application september 18, 1946, serial No. 697,686

8 Claims. (Cl. 126-92) The present inventionrelates to heaters for u sewith eithernatu'ral or articial gas, of a kind which are usually portable and which may be' positioned at any point in, a room convenientto a gas connection. In some instances, thesev heaters may be placed in a recess in the wall of `a room, such asin the conventional re place' recess.`

A principal object ofthe invention is to providefgasfheaters of the above general type which combine heating eiciency, cheapness of construction, and ornamental beauty to a marked degree.

A, further `object of the invention is to provide heaters oi the above type which supply heat to a room by` direct and indirect heat radiation in combination with circulating convection currents of hotair. In this connection, it is an important object` ofthe invention to provide for vertical circulation of pure heated air through the front of the heater, this circulation" being separate or isolated from that of the combustion gases, and at the same time to direct radiant heat from visible radiants in theheater in order to provide an 6 attractive soft-light appearance.` Ancillary to the above, it is an object of the invention to providea heater wherein the hot 6 burned lgases maybe `baffled througha hood of the heater atjthe front thereof, and wherein a most eifectivera'diator action is supplied at the front of the hood bya plurality of angular metal radiator surfaces which trap `the burnedgases for a short period of` time and change their directions 6radi`call`y6in6ord`er to extract the maximum oif-heat-unitsirom y'the gases prior to their discharge at the back of the hood. 6 6

'A1' furtherv object of the invention is to providea heater havihgtransparent or glass front members which control the upward ow of` both heated air and the heated or burning gases, and Whereinthe radiants, which `may be of attractive design in theiij'effect upon the re, will be Visible tothe occupantsof aroom through the front'oi' the heater. 6'6 66 6 6 66 6 AIt iis-also anobjectof the invention to provide such- -a-heater composed of a6 minimum 6 number otUparts/vvhich may6 becheaply fabricated and capable of convenient assembly with a minimum of labor. i 6 6 6 Variousaotherobjectsand advantages of the invention Willbecome apparent asthe description herein progresses.66 6 6 6 6' 6 In the drawings, which are illustrative of several preferred forms of the invention:

Figure l is a side elevational View of a simple heater design.

Figure 2 is a half front elevational View of the heater of Figure 1. 6

Figure 3 is a top plan View of the portion of the heater depicted in Figure 2.

Figure 3a is a detail sectional view of the andiron connection, taken along the line 3a-3a of Figure 3.

Figure 4 is a partial `iront sectional view of the body of the heater, showing the position and relation of the gas burner.

Figure 5 is a transverse vertical sectional view of the heater, taken along the line 5 5 of Figure 4, this heater being of a design which does not employ the separate front andiron supports as in Figures 1 3.

Figure 6 is a top plan View of the heater of Figures 4 and 5.

4Figure l is an enlarged detail horizontal sectional vieW through one end of the heater, showing the arrangement for attaching the structural parts of the base to one another, omitting the glass chimney for simplicity. `In this View, a portion of the trim plate 4D is broken away to clarify the section in Figure '7a.

Figure 'la is a Vertical sectional View taken along the line 'la-'la of Figure 7 Figure 8 is a transverse vertical sectional view of a further modification of the invention, Wherein a vented radiator hood is employed, said hood being shown in section along the line 8``8 of Figure 9.

` Figure 9" is a front view of the radiator hood of Figure 8.

Figure 10 is a partial vertical sectional View of the radiator hood, taken along the line lll- LID of Figure 9.

Figure 11 is an enlarged front view of the radiator hood 0f Figure 8.

Figure 12 is a top plan view of the radiator hood of Figure 8, partly in section.

` Figure 13 is a backview of the combustion gas outlet from the back of the hood.

` Figure 13a6 is an end view of the hood shown in Figureg. 6

Figure 14 is a transverse Vertical 'sectional View of a further'modication of theinvention, wherein glass covers are employed immediately in front ofthe radiants.J 6

3 Figure A15 is a half front elevational and half longitudinal sectional view of the heater of Figure 14.

Figure 16 is a top half plan view of the heater of Figure 14 with the hood omitted in the right half of the view.

Figure i7 is Ian enlarged partial horizontal sectional View of the aforesaid heater, showing details of the separate glass shields or covers for the radiants, the view showing the top edges of the glass shields. A r

Referring to Figures l, 5, and 6, the base of the heater comprises a rear Fmember IB andb a front member I2, said members being cast or otherwise formed of a light metal such as aluminum. The rear member has integral therewith opposite end legs It, and the front member 'likewise has 2in tegral therewith opposite legs I6, or in the case oi the andiron embodiment shown in .Figures l, 2 and 3, the front legs are omitted in Vfavor of the andiron legs to be described. y

The rear and iront base members IEI and I2 are hollow as shown in Figure 5, providing an open space between them, and they are secured together at each end by respective vertically extending flange portions 2li and 22 (Figure 7), said flanges being gripped together by clamping plate `C which embraces said flanges, said clamp- A ing plate having an aperture centrally therethrough to receive a bolt 25 which is secured by 'a Vnut 26 as shown in Figure 7.

In order to provide an enclosure 'for a burner tube 3D '(best shown in Figure 5) bent guard plate is provided extending between the `ends of the iront base member I2, this plate having rearwardly bent portions 3d (Figure 7a) at each of its ends (Figure 7) terminating in outwardly extending vertical lugs 38 with bolt holes therethrough and through which the bolts previously mentioned may pass, said bolts having heads 38 which bear against the inner face of the end portions '34. The lugs 35 lie between the ange portions 20 and 22, and the clamping plates C have similar lugs il@ 'which lie between said flange portions. y

With this construction, when "the nut 26 is tightened, the clamping plate C serves 'to vpress the flange portions 2o and 22 together and thus hold the base sections in rigid relation 'with 'respect to one another. The securing assembly just described may, if desired, be covered by ornamental dressing plates iii through whichthe bolts 25 likewise extend, there being a nut 42 on the extreme outer end of each bolt to clamp the dressing plates in position to cover the union between the front and rear base sections. As shown in VFigures 2 and 4, this ornamental dressing i0 may extend for a considerable distance upwardly along the ends of the heater to enhance its finished effect, and may engage over an abutment on the hood as shown to retain the hood and back in proper position on the base.

Resting on the top edges or" the base members just described, and on the top edge of the guard plate 32, is a horizontal plate 48 which provides a support for the refractory back B of the heater, and for a plurality of radiants R which are disposed in side by side relation along an indented open -channel-way 52 formed around a central longitudinal opening along the length of the supporting plate 48. A conventional burner tube 50 equipped with the usual outlet gas nozzles 56 is supported by bolts 5I adjacent the ends vof the supporting plate d8 to depend therefrom with a number of the nozzles or jets -56 .positioned beneath each of the radiants. The beck B of the heater has a forwardly extending top `62 which provides a sas space 64 above the radiants, and this top is beveled on its rear edge as shown to support a hood 65 likewise of refractory material, said hood having a downwardly depending lip 66 which covers the tops of the radiante when viewed from the front. The topl E2 of the back B terminates short of the ends of the bask, and at each end of the back there are integral forwardly extending end walls 61. The hood 65 has downwardly inclined end covering -portions `68 which rest on the top surfaces 6! ofthe end walls 61. as shown in Figure 4. In order to secure the hood vin place, there is a tie rod 'I0 which extends throughout the length of the burner, this tie rod passing through apertures in the upper ends of the nishing strip lill, and through the portions lIi!) of the hood, the ends of the tie rod being secured by nuts as shown, thus holding the parts firmly together while securing the end dressing plates 40 asvshow-n.

Referring to Figures `3 and 5, it will be noted that the front base member I2 has a wall 12 of somewhat rectangular configuration, leaving an open space 'It for the upward passage of air in from of the radiante. The wan 12 is inwardly hanged near "its top as at 16, and on this Hanse a curved heat resistant glass 'front Ta, formed to the same configuration as the opening T4, is "supported, said glass front extending rearwardly is at et to form a complete enclosure in iront ofthe radiantek Referring to Figure 4, Athe 'front outer edges of the end 'sections 61 ofthe back are 'charineled verticallyas at '8l to receive the rearward 'edges of the glass chimney to thus form a 4completely closed chimney effect.

It will be evident vfrom A`the above 'that the base member 'and `'the back B, 'together with the glass front, constitute a casing open at its top and bottom and having front and rear wall'sfand op* posite end walls.

It Will lbe understood that y'any appropriate means Vmay be ,provided 'to vent the .gases from the hood, as by means of any form of discharge connection leading from the hood chamber El, if venting of gases is desi-red, although this may not be regarded as essential in vSinirle deslgm. Appropriate means may be provided to `seal the hood 65 to the edges of the back B to prevent discharge of .burned ,gases into 'the room if this is regarded as unz'iesirab'le.l In this connection, .it will be noted that the forward lip 6B yoi the hood extends downwardly to a point above the upper ends of the radiants nin order to direct fthe yhet gases 4 into the hood. l Y With the/arrangement just described, :andreferring lparticl-llarlyU-to .Figures 1 vand 5 'it will be understood that the usual gas connection will be made withthe burnertube 30, as iat T82 Iin Figure 1, and the v.burner G0 will ,present mixed gas .and air at -the lburner tips 56 (Eigure 5) Additional or secondary fair is permitted to ,pass upwardly as at .84 beneath the burner guard plate .32 and `this air may pass .rearwardly fof the burner tube and `forwardly thereof in the space' between said tube and the guard plate 32 .as show-n by the arrows in Figure 5. This secondary air enters the open bottoms of the :radiants R approximately at Yor `just above the .flame level of the burners, in order that effective-combustion may take place within the radiants. The frodi'- ants R act in the .manner vwell known lin the flirt, directing heat and iight forward-1y, and ,this heu passes through the transparent wall F18 'of the' in any appropriate manner` glass chimney, the, light from the radiants being clearly visiblewthrough theiffwallswof the said chimney. The; burning gases i pass upwardly `through the radiants and may be discharged through the hood chamber 64 being led therefrom As the air passes upwardly through the ichirnney,

itis exposed to the actionof the radiants 415.. l.which heat the air andaccentuateithe convection eiect,

the pure heated air being discharged from the top of the chimney as shown by the arrows in Figure 5, tc provide upwardly .directed fresh air convec-`- tion heat for the room. b p

` While various arrangements may be provided to assemble the parts as just described together, it will be understood that the arrangements shown are quite desirable from the standpoint of cheap- Vness of manufacture. The' arrangement wherein the forward and rearfsections of thebase are secured together and to the burner guard 4plate 32 is quite important, for when these parts are thus connected, a rigid foundation is then provided for the remaining elements of the heater. As shown, the vertical 4finishing strip 40 is fitted over the bolts 25, and the up-per end of this strip has a suitable aperture" to receive the threaded end of a tie rod l which extends entirely through the top of the heater,being retained by nuts 'Il on the ends of the tie rod. Bythis arrangement.` the hood of the heateris `properly held on the back, the latter being in turn supported on the base as described. l

The burner tube 30 may be mounted in any suitable way in the base, .i but I haveshownit bolted at its ends as at to wellsl491whichdepend from the radiant supporting plate 48. ,5,

While the forwardsection of the `baselmay be supported by integral legs I6, the decorative appearance of the heater may be enhanced by providing andiron legs 90 at the frontthereof,` as shown in Figures 1, 2 and 3. These andirons may be of various designs,and canberemovably con-` nected on leg brackets 92 `which curve outwardly and forwardly from the front of the heater as" shown in Figure. Referring to Figure 3a, each leg bracket has an upwardly bent arch shaped cross section as shown at S4, and throughlthetop plate of this arch a bolt 90 is passed, the `head of said bolt being counter-sunkin the flange 7610i the base which supports theglass chimney; i A corner combing 98 on the forward part Iof the base acts as a skirt to hide thisconnection; 'and the lower edge of thecombing may be received in a shallow channel 99 at the rear of theuhori` zontal portion 9210i theleg andadjacent theedge ofthearch94. w .i

A modication of `the back and hoodiisshown in Figures ithrough 13. `'Iheupper edge ofthe back B is somewhat modified to accommodatel the hood, the latter being cast or otherwise formedf of metal, `and having a front vlip which depends downwardly in front` of the `top of the radiants of a, novel corrugated radiator design, in iorderto exact the zmaximumwof useful heat vif-rom the burned gases before `they are (permitted to *dis-n, charge through a pipe |02 in the` reariwallof the hood. The top wall |04 of the hoodis spaced from the topof the back throughout4 the length of` `the heater `to provide` a gas` spaceglnand;

this `tonsurface |04, being of somewhat extenf sive area, provides for substantial heat` transfer `by `upward, radiation into the room. Thefront lip of thehood is provided with a number of out-` wardly `extending jackets |08, and as shown in Figure ,10, these jackets provide spaced substan- `tiallyseparate pockets ||0 for` the burned gases `to pass forwardly into the hood after being def lected bythe baille |2 at the top of the back B `These gases are permitted to pass forwardly until they strike the front part of the top |04 being then caused to abruptly change direction through almost 180 and then move along the inner face of the top wall |04. These changes in direction of the gases cause a considerable radiation of heat upwardly,` forwardly and downwardly, Each chamber 0 has a forwardradiating wall I|4 (see Figure 11), a top radiating wall ||5 and side walls |16 and llii, `whereby the radiation of heat from said chamber will be maximum.

Itwill be noted in Figure 8, that the forward radiating wall of the hood extends some distance outwardly over the convection path formed through the chimney 13 and said radiator wall hasthe effect of deecting the rising air through the chimney outwardly as it passes upwardly. In addition, the radiator imparts further heat to this .air as it passes the surfaces described thereby contributing to the warmth of the room as well as to the acceleration of the convection movement of this air. It will also be observed that the lower edge of` the radiator front depends downwardly to such a point as at ||9 to conne the upper edges of the radiants, and thus to confine the flow of gas upwardly into the hood. Various structural details of `the embodiment of Figures 8 through 12 are not specifically described, it being apparent that they are substantially identical or similar to the embodiments of Figures 1 through 7, as illustrated in the drawings and previously described. b

In Figures 14 through 17, I have disclosed another` arrangement wherein provision is made to` further insure the sealing oir of the radiants from the convection air space within theehimney 18. The top of the back section IB2 altered to receive thereon a` modified hood |32, said hood` shield of heat resisting glass or the like which` may be formed in one piece, but which is more conveniently made in a plurality of angular cross sectional pieces 4| of transparent heat prooff glass or the like carried on asuitable angeon the upper edge of a modified burner guard plate` |44.H This guard plate may be formed integral with the rear section 45 of the burner, but I have shown` the guard plate andthe horizontal plate supporting the glass angle members, radiants and back made in one piece and resting on and at,-`

tached to the back frame member |as illustrated inlFigures 14 and 15. i

l As shown in Figure 17, adjacent edges of `the horizontal supporting portion of the guard platel |44, as indicated in Figure 17. The angle members .|4|. are outwardly suported at their, upper endsby the wave-like edge of the hood, and the;V

atraen i interior of the lhood may carry a cross brace |51 to provide an interior support for the upper ends of the angle members |48. Such a cross brace may be omitted if the vertical angle members |48 are secured with sufficient rigidity to the supporting plate on which they rest, and the brace is therefore not indicated in Figures 16 and 1'7.

It will be noted that the top edge of the back B'- has spaced recesses |52 therethrough which are in alignment with the vertical angle members |48 and with the depressions in the front of the hood. These recesses will permit some direct passage of burned gases from the top of the radiants to the outlet |02.

With the above described embodiment, it will be apparent that not only is a hood provided to receive the burned gases and discharge the same after extracting the maximum amount of heat therefrom, but also means are provided to conne the burning gases at each radiant and insure no mixture of the air passing through the chimney 'i6 as previously described. The transparent angle members Ml do not materially reduce the bright appearance of the heater, as the radiants are clearly visible therethrough. The wavy shape of the transparent elements MI causes direct radiation f a great volume of heat from the radiante to the air passing upwardly through the chimney, to add heat thereto. As shown in Figure 14, the hood |32 has a baling eifect on this rising air to cause the same to flow forwardly as well as upwardly when it leaves the chimney.

In this arrangement, there are substantially three channels of Ilow for gases or air. There is the direct movement of consumed gas upwardly through the radiants, and out through the hood. There is a further movement of hot air upwardly in the spaces |50 in the angle formed by the glass members IM, and this hot air joins the burned gases from the radiants in the radiator hood. There is also the separate movement of air upwardly through the chimney, which is uncontaminated by the burning gases within the remaining parts of the heater.

I claim:

1. A gas heater having a base, a refractory back with a row of radiants forwardly thereof supported on said base, a burner with gas jets carried in said base beneath said radiants, the upper termination of said back comprising a hood having means to receive the burned gases from said radiants and to discharge same, said base having an extension positioned a substantial distance forwardly of said radiants providing an enlarged vertical opening through the base across the front of the heater, a glass chimney positloned on the forward extension of said base and having side walls which reach rearwardly to the front face of the heater at the ends of the row of radiants, said chimney being open at its lower end and having an open upper end to permit an upward convection ilow of air therethrough, and a transparent sealing plate mounted on said base and positioned immediately in front of said radiante, the upper end of said plate being formed to substantially enter said hood to confine the passage of burned gases into and through said hood. whereby upward convection flow of heated air separate from the burned gases from said radiante is provided through said chimney and passing in front of said radiants to derive heat therefrom.

2. A construction in accordance with claim 1 wherein one or more of the radiants are coveredI by separate removable transparent sealing plates,

8 there being a plurality of said sealing plates which together form a sealing barrier across the front of the radiantsto separate the upward flow respectively of burning gases and convection air.

V3. A construction in accordance with claim 1 wherein each radiant is covered forwardly by a. separate transparent removable plate of glass or the like, and which is of angular horizontal cross section in order toform a passage for heated gases and air in front of said radiante.

4. In a gas radiator, a base comprising separatev metal Afront and rear sections having respective integral front and rear legs, and having respective vertical connecting flanges at each end of the` base, said Vflanges having inner faces presented toward one another and outer faces, a radiant 'carrying plate supported adjacent the top edge of said base, a gas burner supported in said base below said plate, a guard plate for said burner positioned forwardly of same, said guard plate having rearwardly directed end portions extending to points immediately within the engaging flanges of said base members, respective tie boltsextending through the end portions of said guard plate and between said respective flanges of said ,base member, and clamps on the outer ends of said bolts engaging the outside faces 0f said flanges of said base members to lock them together and in proper relation to said guard plate, whereby to provide a rigid mounting for the radi-ant carrying plate and radiants.

5,. A construction in accordance with claim 4 wherein the heater includes a back supported on said base and a hood on said back, and wherein vertical supporting members are provided at the ends of the base and extending upwardly to retain said back and hood in proper position on said base.

fii A gas heater comprising a hollow enclosing casing'open at its top and bottom, said casing comprising vertically disposed front and rear walls and opposite end walls and having spaced supporting legs depending therefrom providing a. bottom air inlet, a series of elongated hollow vertical radiante supported on said casing adjacen-t its rearwali, a burner supported on said casing between its end walls, said burner having gas' jets ypositioned beneath said radiante, the front wall of said casing comprising a nat transparent panel of heat resistant glass in horizontal alignment with. and of height substantially equal to the height of said radiante, said panel being spaced asubstantial distance forwardly of said radiante-and orming with said end walls an un* impeded vertical air flue forwardly of said radiants which is open at its bottom to said bottom air inlet and which opens to the atmosphere direotlyI above said front transparent panel, whereby to provide for free upward convection iiow of a current of fresh air through. said flue, said transparent panel providing for the visibility of said radiante from the front of the heater and the direct .forward radiation of heat and light therlefrom across said flue and through said front wal 7. A construction in accordance with claim 6 wherein said radiante are provided with a hood constructed to direct the burning gases which rise therethrough rearwardly away from the current: of fresh air which discharges from, said flue.

8. A gas heater having a base member, a refractory backwithf a: series of' radiants forwardlythereof supported on said base member, said' base` member vhaving av portion extending a 'substantial distance in front of said radiants and having an enlarged Vertical opening therethrough across the front of the heater, and a chimney supported on the forward extension of said base member, said chimney having end 5 walls and a at impervious front wall of transparent heat resistant glass but being open at its rearward side toward said radiants and being open at its lower end to permit entry of air, the front wall of said chimney terminating at a height substantially level with the tops of said radiants providing an opening for discharge of air to the atmosphere, whereby to provide an upward convection flow of heated air through said chimney and passing in front of said radiante, said convection ow of heated air augmenting the direct forward radiation of said radiants.

DE WITT H. WYATT.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS lo Number Name Date 2,302,796 Oyster Nov- 24, 1942 FOREIGN PATENTS Number Country Date 452,203 France May 10, 1913

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