US1546919A - Heat-saving appliance - Google Patents

Description

July 21. 1925.

P. 'G. DORE HEAT SAVING APPLIANCE Filed March 19, 1924 [Mk/Toff My. M a) .Xfro/ A-r/ Patented July 21, 1925'.

PAUL e. none, or rrrrwaunns, WISCONSIN.

i-rna'nsavrne' APPLIANCE.

Application filed March 19, 1924. Serial No. 700,196.

To all whom it may concern:

'Be 1t known that PAUL G. Donn, a. citizen of the United States residing at lvlilwaukee,

in the county of Milwaukee and State of ll isconsin, has invented a certain new and useful Heat-Saving Appliance, of which the following is a specification.

This invention relates in general to improvements in the art of heat transfer, and relates more specifically to improvements in the construction and operation of appliances especially associable with gas or oil burners,

for the purpose of eliminating waste of fuel and heat.

Ingeneral, an object of the present invention is to provide an improved fuel burning appliance which is simple in construction and "efficient in operation.

Some of the more specific objects of the inventionmay be summarized as follows To provide a burnerv applianceespecially adapted forthexcombustion of gas or oil, which will economize in the use of fuel and which will eliminate waste of heat.

To provide an attachment for gaseous fuel burners, which will thoroughly mix the fuel with the oxidizing agent thereby insuring more elfective combustion and reducing to a minimum the fuel consumption.

Toprovide a fuel burner which will antomatically and effectively concentrate the flame upon the most efliclent heat transfer-- ring portion of objects being heated.

ing the operation of such burners.

To provide improved supporting means for fuel economizers, which will automatr callyproperly position the device and which permits ready application a and removal thereof. a 7

To provide an attachmentfor gas burners or the like, which will automatically maintain such burners in clean condition by preventing accumulation of forelgn substances in and adjacent to the fuelsupply openings. To provide aheat saving device which is capable of effectively resistinghigh temperatures andvvhich has the ability to act as an accumulator for the storage or reten tion of heat for some time after the flame has been extinguished.

To provide a fuel economizer which may of fuel gas toward a grid5\ had by referring to the drawing accompanying and forming a part of this specification, in which like reference characters designate the same or similar parts in the various views. V

Fig. 1 is atopview' of a standard star shaped gas burner having an improved heat saving appliance associated therewith.

Fig. 2 is a centralvertical section through a standard star-shaped burner and an improved heat saving appliance associated therewith, showing the burner delivering a flame against a kettle supported thereabove.

Fig. 3 is a side elevation of an improved heat saving appliance.

7 While the invention will be specifically described herein as having been applied to a standard fuel gas burner, it is not desired to have such disclosure act as a limitation in scope, and it will be obvious that the improved economizing appliance is'applicable to other forms of burners as well as'to burners adapted to utilize other kinds of fuels.

The standard star-shaped fuel gas burner 4 comprises generally a plurality of hollow i radiallydisposed fuel distributing elements To provide an appliance which is co-nveniently applicable to any standard fuel gas or oil burner for the purpose of improv i ments is provided with a plurality of upwardly directed fuel discharge openings 7 adapted to deliver substantially parallel jets 3 The grid 5 is located some distance above the burner 4: and iscapable of supporting a kettle 6 or other objects which it is desired. to heat, above the openings 7 as indicated in Fig. 2. The grids 5 are readily removable to permit cleaning or removal of the burners 4E.

The improved heat saving appliance consists of an annular upwardly converging wall or deflector 2 forming a. converging flame directing passage 13 communicating with an upper circular central unobstructed flame discharge opening 1d, and means for properly supporting the deflector relatlvely to the burner 41:. The defleoto=rsupporting be manufactured and sold at minimum cost. means comprises aseries of four downwardly converging supporting and centering arms 3 extending through the passage 13 to a point below the deflector 2 and integrally united centrally below the discharge opening 14 of the deflector 2. These arms constitute the sole means for supporting the economizer when applied to a standard starshaped burner t having a relatively small central hole 9 as shown. Auxiliary supportin means comprising a series of four feet or lugs 11 are also provided for the purpose of properly supporting the economizer relatively to burners having relatively large central openings. The arms 3 and the lugs 11 are preferably cast integral with each other and with the deflector 2, these sup ports depending from. the underside of the deflector wall. The economizer is preferably formed of relatively massive structure and is cast of metal which is capable of resisting high temperatures and of retaining heat for a relatively long period of time.

In order to apply one of the improved heat saving appliances to a burner 94 the standard star-shaped type, it is only necessary to remove the grid 5 and to insert the lower ends of the depending arms 3 of the appliance into the central opening 9 of the burner 4. The converging arms 3 then serve to automatically support the appliance above the burner as shown in Fig. 2, and simultaneously function to properly center the deflector 2 relatively to the radial fuel distributing elements of the burner 4-. When applying the appliance to other types of burners having no relatively small central hole 9, the feet or lugs ll formed on the under-side of the deflector wall 2 are permitted to rest directly upon the upper surface of the burner. These lugs ll are so curved that they will function to antomatically center the appliance relatively to a burner engaged thereby. The appliance is freely vertically removable from any type of burner to permit cleaning or re mo'val of the burner.

During normal operation of a burner 4: having the improved economizer properly applied, the fuel is continuously supplied from the pipelO to the interior of the'burn- 4 from whence it is delivered in the form of individual jets, upwardly through the openings The jets of fuel thus delivered from the openings 7 are ignited after being mixed with air passing upwardly through the openings 8, to produce upwardly directed radial rows of flame 12. As the rows of flame 12 advance upwardly through the passage 13, the upwardly converging deflector 2 gradually constricts the cross sectional area of the flame and consolidates the several individual rows .of flame into one central circular homogeneous flame 12 at the upper discharge opening 1 1- of the appliance. This single homogeneous flame 12 is delivered upwardly from the unobstructed opening 14, directly against the lower central portion of the kettle 6 whereupon the flame 12 spreads laterally and uniformly over the entire bottom of the kettlc 6. The quantity of fuel admitted through the pipe 10 should be so adjusted that the flame 12 will be substantially confined to the bottom of the kettle 6 and does not advance upwardly along the kettle side walls to any appreciable extent. In this manner the heat resulting from ignition and combustion of the fuel is effectively and aut-r'nnatically concentrated to most efficiently heat the kettle 6 without waste of fuel or heat.

It will th be noted that the improve-c econoniizer besides eliminating waste of heat, serves to produce an absolutely homogcneous flame 12 by effectively mixing the fuel with the oxidizing agent and consolidating the several rows of flame, thereby insuring complete combustion of the fuel.

The appliance is obviously readily applicable to and removable from any standard fuel gas or oil burner to improve the operation thereof. The lugs 11 and the arms} autonuitically function to both support afll center the appliance without the aid of complicated attaching mechanism. The converging annular wall or deflector 2 besides functioning as hereinbefore stated to economize in he use of fuel and to eliminate waste of heat, serves to automatically maintain the l'uirner 4% clean by preventing substances which may drip from the objects being heated, from dropping upon the burner and clogging the openings 7. Such drippings flow downwardly along the outer flaring surface of the deflector 2 and eventually drop from the peripheral edge of the deflector upon the usual drip catch pan disposed beneath the burners. By forming the appliance of heat resisting and retaining metal such as maleable or gray iron, the

eccnomizer may be utilized a radiator to maintain kettles or other objects warm for a relatively long period of time after the flame has been extinguished. The appli ance is obviously extremely simple in construction being formed of a single casting which requires no finishing whatever, there by permitting manufacture thereof at minimum cost.

It should be understood that it is not desired to limit the present invention to the exact details of construction and opera tion herein shown and described, for various modifications within the scope of the claims may occui to persons skilled in the 125 art.

It is claimed and desired to. secure by Letters Patent 1. A heat saving appliance comprising an annular upwardly converging Wall forming a flame concentrating passage, and a plurality of downwardly converging arms united centrally within said passage.

2. A heat saving appliance comprising a circular upwardly converging wall forming a flame concentrating passage, and a plurality of downwardly converging arms extending downwardly and united below said wall.

8. A heat saving appliance comprising an annular upwardly converging wall forming a constricted circular flame concentrating passage, and a plurality of radially disposed arms united centrally below said passage.

4c. A heat saving attachment for starshaped burners, comprising an annular upwardly and inwardly curved wall forming a constricted unobstructed central flame concentrating passage, and a plurality of combined supporting and centering lugs formed integral with and projecting downwardly from the under side of said wall, said lugs being adapted to coact directly with and to maintain the peripheral edge of said wall free from contact with a burner.

5. A heat saving attachment for starshaped burners, comprising an annular upwardly converging wall forming a constricted unobstructed upwardly directed cene tral flame concentrating passage, and a plurality of supporting lugs formed integral with the under side of said wall, said lugs being adapted to coact directly with and to automatically center said attachment relatively to a star-shaped burner with the edge of said wall spaced from said burner. V

In testimony whereof, the signature of the inventor is affixed hereto.

PAUL G. DORE.

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