US1649007A - Heat collector - Google Patents

Description

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Nov.. '15, 1927.

INVENTOR EW/S 7." W/CX.

ATTORNEY.

L. T. wlLcox HEAT COLLECTOR Filed Feb. 19. 1927 2 Sheets-Sheet 2 INVENTOR. FWS Tiff/C/Y.

BY f

Mag/@maf A ATTORNEY.

atented ov. l5, 192..'

LEWIS T. WILCOX, 01E'` PEEKSKILL, NEW YORK.

naar oonnncronr.'

Application led February 19, 1927. 'Serial No. 169,446.

ln many types of liquid fuel or gas burns,

ing cooking stoves in which there are a lurality of cooking holes in the top or eyplate, it is desirable to cause a single burner c to supply heat to two or more holes.- This is accomplished as a rule by situating the burner in register with onehole and providing means to conduct the heat from that hole underneath the key-plate to the other hole or lo holes to be served by the same burner. Such means are commonly termed heat collectors and it is to such devices that this invention relates. The collector functions in combination with the stove top when the hol-es 'are closed by cooking utensils or otherwise, and

also with a suitable grate in the remote opening to collect substantially all the heat from the burner and pass it lirst in efficient heat ing relation to the utensil on the immediato A 2@ hole and thence conduct it with a minimum of loss to ecient heating relation to the utensil on the remote hole. That combination forms the subject matter of another copending application, Serial No. 170,756.

This application is confined to the features peculiar to the heat' collector `itself, which make it especially adapted for its purpose.

The heat collector which forms the subject matter of this application is characterized by the fact that it approximates the shape of an elongated tray which has a plane top and is relatively shallowat its ends and grows deeper toward the middle, being deepest in its transverse center line. The one end which is termed the front end has a large opening in the sloping bottom which in use is overthe burner and in register with the iirst cooking hole, while at the other end the oppositely sloping bottom is imperforate. Both 4o ends 'are rounded and the 'side walls are brought in at the center so as to constrict the width where the depth is greatest. The device is economically stamped from sheet metal, in whichl case it is provided with a down-turned strengthening llange around its outer edge to prevent warping from the heat. Suitable holes in the top adapt it for attachment to the stove top. There are other details of its construction which are of merity 5o that will appear from the following description of one embodiment of the invention as shown in the drawings, in which:

Fig. 1 is a longitudinal section through" the center of a heat collector constructed in l to an oil stove;

is a'section on line 3-3 of Fig. l,

' lector constructed in accordance with this invention.

Referring particularlyto Fig. 4 there is steel constructed in accordance with this invention and comprising an oblong tray-like member, the entire centerportion of which is depressed forming a dish-like structure leaving "a narrow horizontal Hange 1 around the outer edge thereof and having a bottom 2 which inclines downwardly from each end toward the center, the rear end being inclined more steeply than the' front end. The side walls 3 of the depression are substantially vertical and at the end portions deline two somewhat circular chambers 4 and 5 one at each end of thetray. The two side walls converge toward each other at the center portionof the `tray as at 6 and form a narrow passage 7 connecting the two end chambers 4 and 1 rlhe front end of the tray-like members has a circular opening 8 through the bottom thereof to permit the heat emerging from the upper end of a burner to enter the heat collector. The edge oftheopening 8 is flared upwardly as at 9 to aid in collectin the rising heat. The radius ofy curvature o the side wall' of the front chamber 4 increases at the sides thereof so that the front chamber has 'an increasing diameter with its maximum diameter at the sides thereof. It is to be 4noted that although the opposite side walls -shown a heat collector preferably of sheet Y the mean level. The outer periphery of the tray is bent downwardly to form al depending fstifening' and strengthening-flange 10 which also serves to prevent the collector f vfrom'warping when subjected tol heat. The

top horizontal surface may be bored as at 11, at'the four corners to secure the collector to a key-plate or stove top.

In Figs. 1, 2 a'nd 3 an embodiment of this invention is shown as applied to an oil vstove having a top frame 12 supportingr a key-plate` or stove top 13 to which is attached a col- Cil lector constructed in accordance with this invention.

The key-plate has two openings therein one directly over the' burner 14 which supplies the heat and another positioned rearwardly and removed from the burner, the

two openings being positioned directly over the chambers 4 and 5 of the heat collector.

The front opening has a flush grid 415 there' in, whereas the rear opening which is suplied from the same source of heat, namely, burner 14, has a special grid or grate 16 thereover constructed in accordance with that disclosed in my application Serial No. 170,756.

The flow of heat is particularly indicated by arrows in Figs. 1 and 2 from which it can be seen that as the heat rises from the burner it enters the front chamber. of the heat collector and strikes the key-plate, the

Ycurved sides of the chamber and the bottom of a vessel supported over the front opening, and is thereby `defiected and drawn rearwardly by the draught through the collector. The front chamber 4 being larger as it recedes rearwardly, it readily permits an increasing volume of heat to be collected and conducted rearwardly. As the heat asses through the center portion of the colector the inean level is lowered due to the sloping bottom and narrowed sides, but its iiow is not restricted inasmuch as the cross sectional area is not decreased. The heat then iows from the lowest point up into chamber 5 and through the rear grate being aided in its upward movement by the rear upwardly sloping bottom of chamber 5.

It is to be noted that the front upper end of burner 14 is slightly below the edge of the bottom of the collector thereby permittin the hot gases of any accidental flarebac Ito escape forwardly and out without coming directly up through the two openings in the stove top.

t follows therefore that a heat-collector as shown and described will collect substantially all of the heat from a single burner and apply it in a most eiiicient manner to two openings by reason of the unrestricted duct which guides and increases the flow of the heat.

It is obvious that minor changes may be made in the structure disclosed without departing fromthe spirit and sco e of this invention as defined in the appen ed claims.

I claim:

1. A- heat collector for stoves comprising a dish-shaped tray member deeper at its center portion than at its end portion, one of said end portions having an openin in the bottom thereof for the admission of eat and the other of said ends having an imperforate bottom.

2. A heat collector for stoves comprising a dish-shaped tray member deeper and narrower at its center portion than at its end portion, one of said ends having an opening in the bottom thereof for the admission of heat and the other of said ends having an imperforate bottom.

3. A heat collector for stoves comprising a dish-shaped tray member deeper and narrower at its center portion thanv at its end portions, one of said endsbeing deeper than the other and having an opening in the bottom thereof for the admission of heat and the other of said ends having an imperforate bottom.

4. A heat collector for a stove com rising a dish-shaped tray member having a ottom wall which slopes from the center portion upwardly toward each' end, one of said sloping portions having an o ening therethrough to permit the entry o heat and having tw'o chambers joined at the center portion of the tray by a relatively narrow passage.

5. A heat collector for a stove com rising a dish-shaped tra member having a ottom which is incline from the center portion upwardly 'to the end portions, lone of said end portions havin an openin therethrough to permit t e entry of eat and having two substantially circular chambers, one at each end of the tray joined at the center portion of the tray by a transversely narrowed center passage, the radius of curvature of the circular chamber associated with the end Ihaving an opening therethrough being reater at the sides than at one end thereof? 6. A heat collector for stoves comprising a dish-shaped tray member having a substantially circular depression at each end thereof, the bottom walls of which incline downwardly toward the center portion of said member, the side walls of which converse at the center portion, one of said de pressions havin an opening therethrough adapted to permit admission of heat, the periphery of said tray-like member having a strengthening fiange therearound to prevent warping of said tray member.

7. A heat collector for use with cooking .t

stoves'comprising a tray-sha member for attachment to the under si e of a stove to and adapted to enclose two cooking holes an having a bottom sloping from both ends downwardly to the transverse middle line and provided with a burner opening in one of the sloping bottom ortions.

8. A heat collector or use with cooking stoves comprising a tray-shaped member for attachment to the under side of a stove top and adapted to enclose two cooking holes and having a bottom sloping from both ends downwardly to the transverse middle line and provided with a burner opening in one of the sloping bottom portions, said tray also having formed therein two chambers in one of the sloping bottom portions, said tray also having formed therein two chambers in. the end portions joined by a relatively narrow passage through the centerh portion of the tray, said chambers being substantially circular and of greater diameter than said cooking openings.

10. A heat collector for use with cooking stoves comprising a tray-shaped member for attachment to the under side of a stove top and adapted to enclose two cooking holes and having a bottom sloping from both ends and provided with a burner opening in one of the sloping bottom portions, said tray also having formed therein two chambers in the end port-ions joined by a relatively narrow passage through the center portion of the tray, the outer periphery of said tray being formed with an angularly bent stii'ening flange.

11. A heat collector for stoves comprising a sheet metal tray-shaped member, the depression in the endsbeing of substantially circular shape and connectedby a narrowed downwardly to the transverse middle line' passage, one end having an opening in its bottom for the admission oi heat/ and the other end having an imperforate bottom sloping upwardly from the connecting passage, and the depression beingof maximum depth at the beginning of sald sloping bottorn.

12. A heat collector for stoves com rising a sheet metal single walled tray-shape member having a depression with substantially circular ends connected by a narrowed passage, the bottom of onel end being open and the other imperforate, the sheet metal being flanged laterally from the top edge of the depression to form a 'lat -top face about the depression and having its extreme edge gt flanged downwardly and forming a stren ening iange to prevent warping of the tray member. t

13. For cook stoves and the like a combined stove top part and heat collector', both being formed oi' sheet metal and the stove top part including two cooking holes and the heat collector being disposed underneath the stove top part and coupling the two holes and being of a shape approximating the figure 8 and being relatively deep at the restricted central connecting part and having the bottom at one end provided with a burner opening and the bottom at the other end imperforate and sloping up from the restricted connecting part.

In Witness whereof, I hereunto subscribe m si ature.

y gn LEWIS T. WILCOX.

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