US2938475A - Incinerator burner and controls therefor - Google Patents

Description

May 31, 1950 H. F. KLUGE 2 Sheets-Sheet 1 I l 7 a 16 y FIG.4 /0O /9 H/ INVENTOR. HERMAN F. KLUGE gg, 4! F163 0 M ATTYS.

y 1, 1950 H. F. KLUGE 2,938,475

INCINERATOR BURNER AND CONTROLS THEREFOR Filed Oct. 28, 1957 2 Sheets-Sheet 2 "i LI /4 .25 I04 /04 a, A (iqDl l 11 (1D 3 L L o o 2 .9 GD I 2 (H) /02 O o 2/ .23 o Z8 FIG. 5

INVENTOR.

HERMAN F. KLUGE 0% new.

ATTYS.

States. 1

INCINERATOR BURNER CONTROLS THEREFOR Herman F. Kluge, Shaker Heights, Ohio, assignor to Donley Bros. Company, Cleveland, Ohio, a corporation of Ohio Filed Oct. 28, 1957, Ser. No. 692,874

2 Claims. (Cl. 110-18) atent O have not been reliable in service and some have not provided for automatic shut off of the gas upon pilot failure. Yet other types of burner controls are objectionable because the pilot light can be blown out readily by drafts or wind pufis in the flue, and yet other burners and controls are objectionable because they are not compact,

independently operating units.

The general object of the present invention is to provide a new and improved type of an incinerator burner and controls therefor characterized by the compactness of'the burner and controls therefor and by the pilot being positioned within an enclosed control box provided, which box is separate from the flue and combustion chamber.

Another object of the invention is to provide means in an incinerator burner and control for spreading the ignition flame across the combustion chamber.

Further objects of the present invention are to provide a burner construction that can ignite small fires at frequent, but short intervals; to reduce air pollution caused by burning large amounts of garbage or other refuse at widely separated periods of time; to provide means of controlling the intervals, predetermined, at which a. burner unit will automatically operate for igniting any unburned refuse of any type charged into the incinerator since the previous automatic ignition thereof; to provide 100% fuel shutoff in case of fuel failure or the failure invention will be made more apparent as the specification proceeds.

Reference now should be had tothe accompanyingdrawings, wherein:

Fig. 1 is a vertical section through an incinerator combustion chamber and associated burner and control means with such means embodying the principles of the inven-' tion and being operatively associated with the burner chamber; Fig. 2 is an enlarged vertical section taken on-line 2-2 of Fig. 1; Fig. 3 is an end elevation of the control box unit shown in Fig. 2;

Fig. 4 is a fragmentary horizontal section taken on line 44 of Fig. 2; t l Fig. 5 is a front elevation of a burner control unit embodying the principles of the invention with an enclosure wall of such unit removed; i Fig. 6 is an enlarged fragmentary vertical section taken on line 6-6 of Fig. 5; and i Fig. 7 is a fragmentary plan on line'7-7 of Fig. '6. When referring to corresponding parts shown in the drawings and referred to in the specification, correspond ing numerals are used to facilitate comparison therebetween. 1 1 With reference to the details of the construction shown in the drawings, the numeral 1 refers to an incinerator indicated as a whole. In this incinerator, a conventional flue 2. is provided and it has a lining of fire brick 3 or other customary material therein. Suitable grates 4 are also provided in this incinerator 1 and are positioned in a conventional manner. A charging or firing door 5 is provided in the incinerator 1 directly above a burner receiving opening 6 provided in a .wall of the incinerator 1. At this burner receiving'opening 6, a flame spreader 7 is provided and extends across the flue. The flame spreader 7 is in the shape of an inverted U-shape in section channel in theinterior of the flue 2, whereas the flame spreader 7 has a hollow rectangular section .8 thereof received in the wall of the flue'2 adjacent the charging door 5. The ends of this flame spreader..7 are positioned by portionsof the wall forming the .flue 2 but are adapted to expand or contract with relation. thereto. As an important feature of the invention, a :burner control box or unit 9 is provided and it is positioned externally of the combination chamber 2 by means described hereinafter in more detail. This burner control unit9 is positioned on end flanges 10a or equivalent members provided on the outer end of a wallor burner sleeve 10 suitably received in and anchored to the wall defining a portiojri of the combustion chamber 2 in the opening 6.

pilot, which incinerator burner operates with a minimum of supervision and automatically turns on the main burner at regular intervals;

A further object of the invention is to space a control box and associated pilot burner member slightly from the flue means so that drafts in the flue means do not readily adjustable, or variable timer member for use in automatic control of a burner means of the type referred to hereinbefore.

The burner control unit 9 includes a hollow rectangular frame-or box 11 that has a top 12 thereon for covering and enclosing all of the components of the burner control unit. A front wall 100 is pivotally secured to the frame 11 as by journal shafts 101 to permit access'to the interior of the frame. The front wall 100 is smaller than the opening in which it is received to provide limited air and gas flow to and from the unit 9. Spacer brackets 13 are secured at their ends to the frame or box Himhe imagi a e h r sbis s an ad an es .5 the mediately adjacent the burner sleeve 10 and center secf tions of the brackets abut against end flanges'on the burner sleeve so as to spread or separate the frame or box 11, as a feature of the invention, from the associated and positioning burner sleeve 10. Thus cap screws 14 or other equivalent means can extend through holes pro 'vided in the frame or box 11 and engage tapped apertures (not shown) provided in the flanges 10a of the burner sleeve 10 for fixedly securing the burner control unit 9 to the burner sleeve 10.

sta esman Figs. .2 and 3 .of the drawingsshowthat a gassupply pipe 15 extends from the burner control unit 9 and frame 11 for connection to a suitable source of gas, whereas a burner hood 16 is positioned by and'extends from the frame 11 at another portion thereof and has a burner 17 receivedtherein for directing flame therefrom into the burner sleeve for flow to the spreader sleeve 8 and out intothe incineratorl by passing into and along the heat, or. flame spreader 7. Fig. 4 shows that the burner hood 16 extends farther from the frame 11 than the brackets 13 sothat the flame passing from the burner 17 and hood 16 will be received directly in the burner sleeve 10. In this specification and claims, the expression gas burner means is taken to include both the burner 17 and the burnerhood 16. 7 An overhanging section 12a is provided on the top 12 of the cover 11 and it abuts against the outer wall of the flue 2 to'aid in spacing the burner control unit 9 therefrom. It also will be seenthat the burner sleeve 10 is of much larger sectional area than the burner hood 16. However, an airspace is provided between the end of the burner sleeve 10 and the frame 11 so that if down drafts or pufis of air are produced in the incinerator 1, they can be dissipated by flowingfrom the burner sleeve 10 to the atmosphere rather than flowing through the burner hood 16 into the burner control unit 9, as the burner hood 16 only extends a short distance such as about A" to /2" into the sleeve 10.

The heat or flame spreader 8 extends through the burner sleeve and has a downwardly extending lip or flange (not shown) thereon engaging the end of the burner sleeve to aid in positioning the heat spreader 7.

Fig. 6 of the drawings best shows how the burner 17 is positioned in and shielded by the hood 16 which extends from the frame 11. As a feature of the invention best shown in Fig. 6, it will be seen that a hole 18 is provided in the lower portion of the burner hood 16 immediately adjacent the end of the burner 17 and below it. Thus, a gas pilot and thermocouple unit 19 is positioned directly below this hole 18 so that when the pilot and thermocouple unit 19 is ignited, flame therefrom will pass through the hole 18 up to a point adjacent the end of the burner 17 for igniting such burner when gas is turned on and regulator is integral withthe gas valve 25.

flows through it. It will be seen that such portion of the burner hood 16, pilot and thermocouple unit 19 and hole 18 are all positioned within the frame 11 and shielded from external air currents and other disruptive forces. A bracket 102 supports the pilot and thermocouple unit 19 on an elbow 103 to which the burner 17 is secured. Brackets 104 position the gas supply tube or line 15 in the unit 9. The pilot generator 19 includes a pilot burner 19a, and a thermocouple element 19b. Gas is supplied to the pilot burner 19a through a tube or conduit 119.

As a'feature of'the invention, the burner control unit 9 is adapted to ignite itself automatically in predetermined time intervals. Thus an electrically operated timer 20 is provided and it has adjustable control plates 21 provided thereon, which cam or control plates 21 have a roller 22 in continual engagement therewith. The roller 22 is positioned on a contact arm 23 for closing a switch 24 at proper intervals in the operation of the timer 20. When the switch 24 is closed, an energizing current is permitted to flow to a solenoid-operated gas control valve 25, by leads 26, connected in the main gas supply pipe 15. However, such gas valve 25 is not opened unless a second solenoid-operated pilot valve 27 is open by virtue of ignition and operation of the pilot and thermocouple unit 19 which has a conventional thermocouple associated therewith and passes electric current to' the gas valve 25 by leads 28 that also connect to the pilot valve 27. Such pilot valve 27 controls passage of gas to the pilot and thermocouple unit 19. An air inlet and mixer sleeve 29 connects to, thegas supply pipe. 15 intermediate the gas valve 25 and the burner 17 for supply of airto the gas to provide for combustion of such gas in the incinerator '1. Obviously the gas is supplied under some pressure so that Conventional lock means may engage a lug 30 on the box '11 which extends through a slot in the front to kee'pfthe box closed, when desired.

It will be realized that semi-automatic means or manually controlled means may be used in the control unit 9, as desired, to replace the timer 20, valve 25, etc. and control gas flow t0 the burner 17.

From the foregoing, it will be seen that a compact, safe unit has been provided for the pilot on an incinerator or the like. Such unit has a special spaced connection with combustion chamber means and provides a well shielded pilot. Hence, the objects of the invention have been achieved.

While one complete embodiment of the invention has been disclosed herein, it will be appreciated that modificason of this particular embodiment of the invention may be resorted to without departing from the scope of the invention as defined in the appended claims.

What is claimed is:

1. In an incinerator, a control box with air flow openings therein, a gas burner means positioned in said control box and protruding therefrom in sealed relation thereto, a pilot thermocouple unit positioned within said control box for igniting gas flowing through said gas burner means, control means connected to gas supply means and to said pilot-thermocouple unit for controlling gas flow to said gas burner means in said control box, a burner sleeve connected to said control box, said burner sleeve being of greater cross sectional area than and surrounding the end of that part of said gas burner means which protrudes from said control box to provide a passage, rneans including brackets on said control box separating said control box and said burner sleeve for air flow to and from said burner sleeve without passage through said control box, said burner sleeve being adapted to'be positioned in a Wall of an incinerator with one end of said burner sleeve being exposed, said burner sleeve having end flanges on its exposed end and said brackets being abutted against said end flanges to space said control box from the exposed end of said burner sleeve, and a flame spreader connected to said burner sleeve and'extending across a combustion chamber.

2. In an incinerator, a control box, a gas burner means positioned in said control box and protruding therefrom insealed relation thereto, a pilot-thermocouple unit positioned within said control box for igniting gas flowing through said gas burner means, control means connected to said pilot-thermocouple unit for control thereby and to said gas burner means for controlling gas flow thereto, a burner'sleeve connected to said control box, said burner sleeve being of greater cross sectional area than and surrounding the end of that part of said gas burner means which protrudes from said control box to provide a passage, means including brackets and an overhanging top on said control box separating said control box and said burner sleeve for air flow to and from said burner sleeve without passage through said control box, said burner sleeve being adapted to be positioned in a wall of an incinerator with one end of said burner sleeve being exposed, said burner sleeve having end flanges on its exposed end and said brackets being abutted against said end flanges to space'said control box from the exposed end of said burner sleeve, and a flame spreader connected to said burner sleeve and extending across a combustion chamber to aid in directing the burner flame across such chamber, said overhanging top extending from said control box substantially the same distance 6 as said brackets and being adapted to abut against the 2,493,939 Ames Jan. 10, 1950 incinerator wall surface. 2,504,592 Scharbau et al. Apr. 18, 1950 2,565,039 Mueller Aug. 21, 1951 References Cited in the file of this patent 12,74 ,72 Trigngs Jun 5, 1956 UNITED STATES PATENTS 5 ,75 ,87 Short et a1. July 3, 195

2,167,183 Naab et a1. July 25, 1939

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