US1854323A

US1854323A - Gas burner

Info

Publication number: US1854323A
Application number: US185513A
Authority: US
Inventors: Wildhaber Ernest
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-04-21
Filing date: 1927-04-21
Publication date: 1932-04-19
Anticipated expiration: 1949-04-19

Description

April 19, 1932. WILDHABER 1,854,323

GAS BURNER Filed April 21. 1927 FIG-6 III III INVENTQR EWr WVum Patented Apr. 19, 1932 umrsn STATES ,PAT"ENT' FF1CE ERNEST, WILDHABEB, OF BROOKLYN, NEW YORK ASSIGNOR F ONE-H AL]? T0 G TYR, OF ROCHESTER, NEW YORK.

GAS. BURNER Application filed April 21,

The present invention relates to gas burners, and especially to gas ranges, suchas are used in households.

Gasburners, especially gas ranges hitherto constructed contain the drawback and danger, that a small flame can be easily blown out. Such an: everydayoccurrence may have sometimes disastrous results, inasmuch as unburnt gas: is; poisonous to the. human organism, as

wellknown.

OneJma-in object of the present invention is to provide increased protection of small flames, and to preventthem from being blown out.

Another object is to improve the combus-' tion at low'flame.

My invention isexemplified in the accompanying drawings, in which Fig. land Fig. 2 are a partial-plan view 29 and corresponding front elevational view, the latter'showrr partlyin section, of a gas burner according to the present invention. The shown type of gas-burner may be used for-instance in laboratories.

Fig. 3 and Fig. 4 are a plan view and a corresponding; section along lines AA of anelnbodiment of the present invention as applied 1301-15116 sta-rterfl'ame of a gas range. 1 Fig.v 5 isra section of agas burner, illustrattve ofa modification as compared with Fig. 4."

Fig. 6 is a plan view ofa, gas burner, such as may be: used- .in household gas ranges for produci-lrgthe cookingflame, said gas burner being constructed according to thepresent invention.

Fig; 7 is-asectionalong lines B-B of Fig. 6. V

Fig. Sand. Fig19 are a section and aside viewof a protective member, showing adj-acent parts insecti-on, the protector being illustratixve of a refinement as com-pared with the protecto-rshown as. part of the gas-burner of Fig;

In the Figures 1 and 2-,. the numeral l1denotes-thebody of gas burner differing from knownpty pesby having ribs 12 provided at the-top, and by containing an additional protective memberv 13-. Member 13 contains a central lpart 14,,which is preventedfromsubstantial loss of heat by the configuration of part 15. Member 13' isplacedon the top of 1927. Serial'No. 185,513.

JOSEPH body 11, and rests with part 15 on the ribs 12 v Owing to its protection from loss of heat, part 14 adjacent flame 16 stays very hot, even when the flame is at its smallest.

The proportions are preferably so selected, that the temperature ofpart 14 exceeds the lowest lighting temperature of gas. A small gas flame will therefore not be immediately cooled (bycontact with a cool body as at present), but will stay hot inasmuch as it passes the hot member 14. In this manner duration of combustion is not unduly shortened, and perfect combustion is assured.

A'usual gust of wind,1-t 1s evldent, will not be able to cool the'fla'me 16 sufficiently toblow it out, on account of the hot member 14. Andif an exceptionally strong and sudden gust of wind should blow it out an instant, the flame will immediately start burning again, because part 14 is preferably .kept hotter than the lighting temperature of. gas, and its mass is made sufficiently large-,that it retainsatem-i perature in excess of lighting temperature even after being cooled fora momentby wind. Part 14 will then act like a match and start combustion again.

Ribs 12 not onlyhold member 13, but they also add cooling surface to the top of body 11. It-is important that body 11 remains cool,for it contains gas and air already mixed, air entering at 18. If its top. should become very hot, combustion might take place in body 11, which is entirely undesirable. This p.ossi-" bility isremoved through the additional cool-' ing' surface afforded by ribs 12, so-ithat the proximity of the hot part 14 has no harmful influence.

If so desired, member 13 maybe removably placed on body 11', so-that it can be; taken oflf with one hand. Although member 13' can be easilyremoved, it is not necessary to do so when a large flameis being used.

An application ofthe'present invention to starter flames will now be described with reference to the Figures 3 5. a

20- denotes a conduit admitting gas to apermanent starter flame21 through'small-holes 22. When the gas is admitted at fullpressure, the flames will shoot out from' the small holes, and "extend through openings 23 to theindividual burners of the range. Ordinarily however the starter flame 21 will be very small. It is protected by member 24, made of suitable insulating or semi-insulating mate Member 2 1 is provided with such a configuration, that the inside points of it preferably stay hotter than lighting temperature of the gas. The outside surface of member 24 however, will usually be much cooler.

Member 2 1 is secured to a substantially cylindrical member 28, which is removably placed around flame 21, and which somewhat protects space 26 from wind.

Air is admitted to the small flame to some extent through holes 23 and especially through openings 25 (see Fig. 3). V The combustion air leaves at the top of member 24.. It is noted that the points where the air enters and the point where the combustion air leaves space 26 are somewhat close together. Wind will therefore equally affect these points; when causing a suction at the central hole, it will also cause a suction at the openings 25, so that excessive draft will seldom occur.

Fig. 5 illustrates an embodiment, in which protective member 30 is made of metal, that is of a good conductor of heat. In order to keep the central part 31 at the desired high temperature, means are preferably provided for reducing loss of heat, such as a second part 32, surrounding part 31, and holding it along small areas only. Part 32 may also be made of metal, as shown. An air space 33 is left between

parts

31 and 32, except at the points of contact. The points of contact of part 31 may be kept cooler than the other part by such means as shown at the top of part 31. A circular groove is there provided, which hampers convection of heat to the points of contact with part 32.

Starter flames are usually supplied with pure gas, and do not contain admission of air before the flame, as do the cooking flames. According to the present invention combustion may be made perfect nevertheless, by providing means for heating the air prior to its admission to the flame. The air is heated by the

same members

24 and 31 respectively, which protect'the flame from sudden extinction.

An embodiment of the present invention as applied to cooking flames of gas ranges will now be described, referring to the Figures 6 and 7 Gas mixed in known manner with air is admitted through the arm 35 and passes to arms 36 of a distributor 37. It leaves the distributor through holes 38 of the arms 36, and burns up after having left the holes. In a case such as the one illustrated I preferably confine protection to one or a few of the individual flames, and dispose the holes in such manner, that a protected flame or the few protected flames can light the other flames again after sudden extinction. Extinction should be prevented, when the flame is in actual use, while little attention needs to be given to the case of an open flame. An open and unused flame is seldom left without attention.

In the embodiment shown in Figs. 6 and 7 a central gas hole 40 heats up a protector 4-1 of substantially cylindrical form, resting on a ring 39 of suitable insulating material. Protector 41 contains two symmetrically placed slots 42, which lead the hot combustion air past the two

gas holes

43, 44 respectively. Protector 4:1 and especially its slots 42 assume a high temperature, which is preferably kept above the lighting point of gas, but, even if kept below, the protector Will have a beneficial influence.

The individual flame at 40 will be prevented from extinction by the hot protector 41; and its hot combustion air will relight the flames at 13, 14. Then the fire will gradually reach the other holes.

The Figures 8 and 9 illustrate a slightly modified embodiment of the protector of the flame at hole 40. This protector 15 is prevented from undue loss of heat, by being surrounded by a part 46 which holds it in points only, and keeps a separating air space between, except at the points of contact. Fig. 9 is a side View showing the slot 12 from the front. A protector 45 as indicated in the Figures 8 and 9 can be kept at a temperature above the lighting point of gas with less difficulty than protector 4:1, and constitutes therefore a refinement in the design of a protector. Inasmuch as part 46 is not very hot at its lower end, it may be set directly onto the distributor 37. It is noted that the protector is placed between the distributor 37 and the heat consumer, such as a cooking pan, and out of contact with the heat consumer. While it can be made in one piece with one of the present known parts, it is preferably embodied as a separate member, as has been illustrated in the drawings.

It is understood that my invention is capable of further embodiments within the scope of the appended claims.

What I claim is:

1. A gas burner containing in combination,

a nozzle facing upwardly for emitting gas, a

3. In a gas burner, a part containing a plurality of nozzles for emitting gas, a protective member disposed on said part, said member having a surface exposed to the gas flame P emitted from a fraction only of the whole number of said nozzles, and means for restricting convection of heat away from said surface.

4. In a gas burner, a part containing a plum rality of nozzles for emitting gas, a recess provided in the center of said part, a nozzle provided in said recess, a replaceable protective member disposed in said recess and having a surface exposed to the gas flame emitted from the last named nozzle, means for restricting the conduction of heat from said member to the part containing the gas nozzles, and a groove formed in said member and leading from the last named nozzle towards other nozzles of said part.

5. In a gas burner, a part containing a plurality of nozzles for emitting gas, a replaceable member for protecting said nozzles, said member being disposed adjacent a nozzle and having a surface exposed to the gas flame emitted from the last said nozzle, insulation means for restricting the conduction of heat from said member to the part containing the gas nozzles, and a channel provided in said member and leading from said adjacent nozzle towards other nozzles of said part.

6. In a gas burner, a nozzle for emitting gas, a removable protective member disposed adjacent said nozzle, said member containing a channel exposed to the gas flame emitted from said nozzle, and insulation means for restricting convection of heat away from said channel, said insulation means being disposed in the path of heat flowing from said channel 0 to the part containing said nozzle.

ERNEST WILDHABER.