US1821858A - Nonflashing gas burner - Google Patents

Description

Sept. 1, 1931. J, TE PAS 1,821,858

NONFLASHING GAS BURNER Origihal Filed April 21, 71928 IIIIII/I/ Patented Sept. 1, 1931 UNITED STATES PATENT OFF-ICE I EDMUND J. TE PAS, OI LAKEWOOD, EH10, ASSIGNOR TO THE CLEVELAND HEATER COMPANY, OF CLEVELAND, OHIO, A 'iCGRPORATZLON OF OHIO NONFLASHI-NG GAS BURNER Original applicatien filed April 21, 1928, Serial No. 271,798. Divided and this application filed April 29, 1929. Serial No. 358,770.

This invention relates to gas burners, particularly gas burners that do not require a primary gas and air mixing tube and is filed as a division of my copending application, Serial No. 271,? 98 filed April 21, 1928, for thermostatic valve and gas burner.

The purpose and object of this invention is to provide a simple inexpensive gas burner that may be used with uniform efficiency with different gases and over a wide range of pressures. A further object of this invention is to provide a gas burner that is adapted to be controlled by a graduating thermostat and which burns with a substantially blue flame at all capacities;

tional view in section, taken on line 2-2 Figure 1. v

A gas supply conduit 3 supports the burner elements which comprise a castin 11 having upwardly turned deflector plates The defiector plates 7 are each carried by a pair of shields 6 that are at their inner ends connected to the central portion of the casting.

The central portion of the casting 11 is provided with a threaded bore, the lower por tion of which receives the conduit 3, andthe upper portion 8 which receives the tube 1 and closure cap 2. A series of radially drilled and tapped holes are provided for the reception of the nozzles 4. These nozzles have a short passageway 9 of small diameter that leads to an enlarged passageway 10, and which terminates adjacent to the lateral air inlet openings 5.

When gas is supplied by way of the conduit 3 to the nozzles 4, a certain amount of air is drawn in through the openings and mixes with the gas in the passage 10. This mixture of gas and air burns at the outlet end of the nozzles 4.

The various ports and passageways of the nozzles 4 are of such size and so proportioned that it is impossible 'tomaintain a flame within the nozzle.

This result is achieved principally by restricting the amount of primary air that can be mixed with the gas before combustion takes place. WV'ith this construction however the burner flame is blue only for very small flames and when the flame is increased in size it becomes yellow and upon a further increase in size it impinges on the spreaders 7 and again ecomes blue in color.

The above phenomena takes place when the shields '6 are not used. By use of the shields 6 in the manner disclosed in the drawings a marked effect is produced in the action of the burner. For very small gas flows a tiny blue flame is supported at :the tips of the nozzles 4 as stated before. Upon increasing the gas flow the flame size increases but does not materially change in character remaining practically blue in color over the whole range of operation of the burner.

WVith my improved burner a more eflicient use of thegaseous fuel is accomplished, and at the same time sooting troubles resulting from the useof a yellow lame burner are eliminated.

The burner is adapted to operate with any commercial gaseous fuel over a widerange of pressures withoutfiashing back or burning in the mixing tube.

Furthermore, it is to be understood that the particular forms ofapparatus shown and de scribed, and the particular procedure set forth, are presented for purposes ofexplanation and illustration and that various modifications of said apparatus and procedure can be made without depa-rtin from my invention asde'fined in the appended claims.

I claim 1. In a burner, a hub portion, a pair of vertically arranged laterally extending walls carried by said hub portion, a deflector plate carried by the outer ends of said walls, and a-gas nozzle adapted to :project a stream of gas between said walls and against said deflector plate.

2. In a gas burner, the combination with a burner head having a plurality of radially Ill) extending mixing tubes arranged substantially in a common plane, a series of baliles each being spaced from the outlet of one tube and arranged in the path of the issuing gaseous mixture, said baffles having curved imperforate surfaces extending outwardly and transversely of said tubes and thereby defleeting the flames from all of said tubes in the same direction substantially perpendicular to the plane of said tubes, and means extending along each side of the axes of said tubes to a point adjacent said baffles adapted to retard the dissipation of heat from the flames supported by said tubes and to direct a supply of secondary air thereto, whereby a substantially blue flame is supported by said tubes when the burner is operated under reduced gas pressures and the flames from the nozzles are not ii'npingiug on said battles.

3. In a gas burner, the combination with a burner head, having a plurality of radially extending mixing tubes arranged substan' tially in a common plane, of a member extending radially of said burner head at one side of said plane, said member having a series of curved iinperloiuute haille surfaces opposite the respective tubes adapted to defiect the flames issuing theretrmn in a direction transverse tosaid plane, and means be tween said bafi'les and tubes outside the path of the flames issuing therefrom adapted to maintain the flames at a high temperature whereby a flame substantially blue flame in character is supported by said tubes when operating under reduced gas pressure.

4. In a gas burner, the combination with a burner head, of a series of mixing tubes extending radially from said head a series of radially projecting members arranged below said tubes, each member having a curved surface extending across the path of the mixture issuing from the adjacent tube and having a vertically disposed wall positioned on each side of the path of the mixture isr suing from said tubes.

5. In a gas burner, the combination with a central gas supply conduit, of a burner head mounted thereon, a series of mixing tubes extending radially from said head in a horizontal plane, and a member connected to said burner head below said tubes having vertically disposed pairs of spaced walls sup porting imperforate portions crossing the path of the gas stream issuing from each of said tubes, said crossing portions being spaced from said tubes and being gradually curved from the horizontal to the vertical.

6. A gas burner comprising a central gas supply head, a plurality of burner tubes extending radially outwardly from said head, each tube having gas and air inlet ports proportioned to produce a rich gas and air mixture in said tube having a low rate of flame propagation so that said tube will be swept free from flame at mixture velocities obtainable under normal gas pressures, a member having a hub secured to said gas supply head, said member having a series of integral baflles extending radially outwardly from said hub with each baflfle arranged 0pposite a burner tube and having a cut-away portion adjacent said tube and flanked on each side by a vertically disposed wall for introducing and directing air to the combustible gaseous mixture impinging on the bafifle, each baffle member having a surface extending at an angle to the path of the discharged gaseous mixture and of an area suiiicient to intercept and deflect all of the gaseous mixture issuing from the cooperating burner tube whereby complete combustion of the gaseous mixture is obtained with a relatively short flame.

7. In a gas burner, the combination of flame supporting gas and air mixing tubes and cooperating means for deflecting and spreading the flames issuing from said mixing tubes when gas is supplied thereto at a pressure reater than a predetermined pressure, and means to shield and direct a supply of air to the flames issuing from said tubes tor the purpose of maintaining the flames substantially blue flame in character when the burner is operated at gas pressures below the stated predetermined pressure.

In testimony whereof I aflix my signature.

EDMUND J. TE PAS.

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