US1703459A - Multiple-flue heater - Google Patents

Description

Feb. 26, 1929.

T. A. SALA MULTIPLE FLUE HEATER Filed April 1928 2 Sheets-Shee Feb 26, 1929- T. A. SALA MULTIPLE FLUE HEATER Filed April 1928 2 Sheets-Shem v w M 2/ n W 5 W w, 4 5 w r; w A 00 000 /4 2 z "/Il/i/IA I74. In IYIII;

TALSQA Patented Feb. 26, 1929.

UNITED STATES;

PATENT OFFICE.

THEODORE A. SALA, DALLAS, TEXAS.

MULTIPLE-FLUE, HEATER.

Application filed April 5 sirable locations for producing the best heat'g ing results.

Another object of the invention is to concentrate the discharge of the hottest air currents at the upper central portion of the grille, whereby the most eflicient circulation will be set up and also whereby the side and top margins of the grille will only be subj ected to therelatively cooler heated air currents.

An important object of the invention is to utilize to the fullest extent the heat generated in the fire box, whereby the greatest volume of air may be heated by a given fire and full advantage of a maximum radiation had.

A still further object of the invention is to provide an arrangement of flues and component parts lending themselves to a more compact, I eflicie'nt and economical organization. a a i A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily under stood, from a reading of the following specification and by reference to the aceompanying drawings, in which an example Ofthe invention is shown and wherein: p

. Fig. 1 is a front view of a heater constructed in accordance with the invention,

Fig. 2 a similar view, the grille being omitted and a portion being'in section, I

Fig. 3 is a vertical sectional. view,

Fig. 4 is a detail partly in section and partly in elevation,

Fig. 5 is a horizontal cross-sectional view taken on the line 5-5 of Fig. 3, and.

Fig. 6 is an enlarged sectional detail taken on the line 6'6 of Fig. 5f

In the drawings the numeral 10 designates a jacket or outer casing lncluding outwardly flared vertical wings or sides 11 and upwardly inclined top 12. At the open i' nt of the jacket outwardly directed.

1928. Serial no. 267,578.

vertical flanges 13 are formed on the front edges of the wings, while an upwardly di rected horizontal flange 14 is provided on the front edge of the top 12. These flanges form a ready means of securing a front grille 15 to the jacket, which overlaps the flanges and conceals the same. The grille is made slightly larger than the opening receiving the jacket, so as to overlie the surrounding panel 16 (Fig. 1), thus adding to the ornamental appearance.

The grille and jacket when united constitute a unit which may be readily slipped into place. Of course the grille and jacket could be'secured in some other way. The

' grille may be given any desired design and finish.

- Within the jacket I dispose an inner vertical shell 17 having an inclined top 18 and provided with flared wings 19. This shell has substantially the same shape as the jacket and is placed concentrically therein. However, this particular shape and exact arrangement is not essential to the invention. Abottom 20 connects thelower edge of the shell 17 with the lower edge of the jacket'lO.

Between the jacket and the inner shell 17 I dispose an intermediate shell or divider 21 which has an inclined top 22 and vertical side wings 23. This divider exhibits a rectangular shape in plan, the wings extending at substantially right angles to the back ,wall. The inner shell has. vertical out-v wardlydirected flanges 24 on the front edges of the wings 19 by which it is securedto the 'grille15 contiguous to the fire opening 25' of said grille. I

While the shape of the divider 21 is subject to change, convenience in assembling is obtained by'turning-vertical flanges 26 on the front edges of the wings 23'and securing said flanges to the rear sides of the flanges 1 245, by means ofbolts 27 whereby the parts are fastened to the grille.

The jacket and the divider form a vertical flue A therebetween; in plan, as is shown in Fig. 5, and has its front covered by the grille 15. The divider 21 and the inner shell 17 form a vertical flue B, the front of which is closed by the This flue is U-shaped flanges 24 and 26' and a front plate 28 (Figs.

and 4). The entire front of the flue A being exposed through the grille, air may enter and escape thrmi h said girdle:

It is pointed out that the flue B is open only at its top and bottom. Air admitting ports 29 near the bottom of the shell 1? provi de entrances for air to the flue B and adj acent openings 30 in the bottom of the divider 21 admit air to the lower end of the flue A.

Within the shell 17 I dispose a vertical fire back 31 spaced from the shell and including outwardly flaring wings 32 provided with laterally directed vertical flanges secured to the wings 19 of: the shell. The firehackhas its top andhottom terminating short of. the'top'and bottom of the shell and co-acts therewith to. form a short vertical flue. C.

The firehack, together with the wings 19, forms the fire loox of. the heater. A suitable horizontal burner 34, gasor other fuel, is placed Within the fire back at the bottom thereof and radiants 35 may be mounted on theburner in the usual manner. A shield 36provided. with. an inclined top 37 and a depending apron 38 mounted. on legs 39 is fitted in the lower portion of the grille opening. 25. The apron has draft slots 1-0 and abuts the grille, while the top 37 inclines up to the burner 34. As is shown in Fig. 1,.the shielezconceals-the ports 29 and the burner parts, aswell as. the lower portion of the shell 1.7,.thusenhancingthe ornamental appearance of. the heater.

It is: evident thatthe heated. air currents rising from the radiants 35 will. be most intense. Air. currents passing up. the flue G will be heated to a; high. degree, but will carry off or cause the radiation of a large amount of. heat; Air currents passing up thefiue B will also. be heated anilwill carry ofl heat,.hut these currents will not he so hot. The heat of the air currents passing through theflue A will he moderate.

From: the foregoing, two things will be apparent. First, that. the generated heat. is dissipated to. a maximum and rapidly carriedoff,v whereby a: large volume of air is heated. Second, that theair. currents passing through the various flues will: be heated to diflerent degrees Farenheits and: thuswill flow. at'difl'erent ratesof speed. I

In'order. to segregate the discharges. of the flue currents and to confine the most intensely heated to the upper centerof the grille, the top 18 of the shell is merged into a central duct D and a front baffle 41. inclines from the top of the fire box to the duct D. The hot air currents from the radiants andthe'flue G aremcrged at the topof the fire boxand discharged from the duct Dv at the center of the grille.

The top 22 ofth'e divic 21 also merged into a central duct E which surrounds the duct. D and is spaced therefrom. The air currents from the flue B are discharged through the duct E.

In order to keep the main body of the llody ofthe grille.

grille 15 relatively cool, an outwardly displaced panel 43 is attached to the grille at each end and covers an opening 44 through which the ducts I) and E are exposed. The intenseheat i i omithe ducts contacts with the panel which obviates its transmission to the This panel foms the subject. matter of a separate application.

When the burner 34 is operating, heated air currents of the highest temperature. will be discharged through the duct D from the fire. box and the flue C. The air passing up the flue G will carry off the heat from the lire hack 31, thus keeping the same rela tively cool and dissipating the heat.

Air will. be drawn into the flue B through the ports 29 and. as this air passes upward in said flue, it willhe heated by. contact with the shell 1? and. the divider 2.1. This air will be discharged. from the duct E. The hotter air currents emerging from the duct D will have a tendency to draw the. air currents from the duct E owing to the lower temperature of said air currentsflowing from the duct EL This action will promote circulation and result that the: jacket 10 will not. be heated to any marked Xtent, so that said jacket may be safely mounted in a wooden cabinet or mantle. i

The air currents discharged from the fines, each having different temperatures, will set up. a rapid circulation. The flue B and its duct E, substantially surrounding the flue-(1,. lire box and duct D, will. aid materially in carrying oil the high heat. The flue A being. around and over the other lines and ducts will cause a further heat dissipation or radiation. and will protect surrounding woodwork.

Various changes in the size and shape of the different parts. as well as modifications and alterations, may he made within the scope of the appended claims.

l Vhat I claim, is:

1. In a heater, the combination of an open lire box, a duct connected with the top of the fire lQOX,.ZL vertical ihie-contiguous to the fire box, a second duct connected with the top of the flue and contiguous to the first. duct, a jacket within which the tire box, flue and ducts are contained and from. which the parts are spaced, and 'a grille covering the front ofthe jacket and having a segregated. area through which the ducts discharge.

and a grille covering the front of the jacket and having a section spaced inwardly from its margin through which the ducts dis charge.

3. In a heater, the combination. of a jacket, a divider within the jacket and spaced therefrom to form. a flue, a shell. within the'divider and spaced therefrom to form a second fine, a fire box within the shell, a duct directed forwardly from the top of the fire box, a second duct directed forwardly from the top of the second flue and substantially surrounding the first duct, and a grille covering the front of the jacket and having a section spaced. inwardly from its margin through which the ducts discharge, the first flue receiving air. through the grille and the second flue having air admitting openings. at its lower portion.

l. In a heater, the combination of a jacket, a divider within the jacket and spaced therefrom to form a flue, a shellwithin the divider and spaced therefrom toform a second flue, a fire box within the shell, a fire back within the fire box and spaced from the shell to form a third flue, a duct directed'forwardly and receiving heated air currents from the top of the fire box and the third flue, said first duct being reduced to a comparatively small area, a second duct within which the first duct is located and receiving air currents from the second flue, and a grille co-vering the front of the jacket and through which air currents from the first flue are discharged above and on each side of said ducts and through which said ducts also discharge.

5. In a heater, the combination of ajacket,

a divider within the jacket and spaced therefrom to form a flue, a shell within the divider and spaced therefrom to form a second flue, a fire box within. the shell, a fire back Within the fire box and spaced from the shell to form a third flue, a duct directed forwardly and receiving heated air currents from the top of the fire box and the third flue, said first duct being reduced. to a comparatively small area, a second duct within which the first duct is located and receiving air currents from the second flue,and a grille covering the front of the jacket and'through which air currents from the first flue are discharged above andon each side of said f ducts and through which said ducts also discharge, the shell having ports at its lower end for at'lmitting-air to the second flue, the

bottom of the third flue being open-for receiving air from below the fire box.

6. In a heater, the combination of a jacket having outwardly flared wings and an mclined top, flanges on the front'edges of the wings and top, a grille attached to said flanges and having a fire opening, a divider within the jacket having wings, and a shell within the divider having wings, the wings of the divider and the shell being attached to the grille contiguous to its fire opening.

7 In a heater, the combination of a jacket clined top, flanges on the front edges of the wings and top, a grille attached to said flanges and having a fire opening, a divider within the jacket having wings, a shell within the divider having wings, the wings of the having outwardly flared wings and an individer and the shell being attached to the grille contiguous to its fire opening, a fire back within the shell, a burner at the bottom of the fire back, a duct attached to the divider, and a second duct within the front duct and attached to the top of the shell, both ducts having their discharge ends contiguous to the grille above the fire opening.

8. In a heater, the combination of a jacket having outwardly-flared wings and an inclined top, a grille attached to the wings and top of the jacket and having a central fire opening, a shell within the jacket having outwardly flared wings and an inclined top, and a divider disposed between the jacket and the shell and forwardly directed wings and an inclined top, the front edge portions of the wings of the shell and also, the divider being secured in common to the grille contiguous to the fire opening thereof.

9. In a heater, the'combination of a jacket having outwardly flared wings and an inclined top, a grille attached to the wings and top of the jacket and having a central fire opening, a shell within the jacket having outwardly flared wings and an inclined top, a divider disposed between the jacket and the shell and forwardly directed wings and an inclined top, the front edge portions of the wings of the shell and also the divider being secured in common to the grille contiguous. to the fire opening thereof, a burner within,

inclined top, thefront edge portions of the fitting against the grille endhaving a top Wings ofthe shell andelso the divider being inclined up to the burner Wiihin the shell, secured: in common. to she grille contiguous the shield having draftv openings for supply- 10 to-the fine opening thereof, a fire back withing air below the burner.

in the shell having flared Wings, a horizontal In testimony whereof I affix my signature. burner at the botfiom of thefire back extending betweenthewings thereof-, and a shield THEODORE A. SALA.

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