US2490127A - Mount for gas burners - Google Patents

Description

Dec. 6, 1949 HANDLEY 2,490,127

MOUNT FOR GAS BURNERS Filed Aug. 50, 1946' 2 Sheets-Sheet 1 IN V EN TOR.

Hfl/POZ D E kWh/01E Y BY 6 M, *W

ATTORNEYS Dec. 6, 1949 E. HANDLEY 2,490,127

MOUNT FOR GAS BURNERS Filed Aug. so; 1946 2 Sheets-Sheet 2 I) W R D m N a w 0 INVENTOR. HAROLD #flMOLEY ATTORNEYS larly adapted "for use during I hich-m'ay be readily I Patented Dec. 6, 1949 UNITED .sT-ArEs PATENT OFFICE MOUNTFGRGAS' BURNERS Harold Handley, Jackson; Mich. Maserati-armament, 1946, Serial no. tsgort (cries-2i 2"Gla'ims.

' 1 This invention relatesto'a mount for "gas burners for use inhe'atihg plants. in-my patent No. 2,295,784 it have disclose" a burner-"particuthe early and late art of the heating-season" p inserted mend-removed from-the door of anordina'ry coalburning furnace.

Specifically, it is "an object of the invention to reduce the cost ofthe burner head and ofthe mounting arrangements a dthe -control devices; Other'ieatures and" objects ofthe invention have to'do with the details of construction and o eration which will be set forth in the following specifications and claims. I

Figure 1 is a vertical sec'tional'view of a burner in place in a hi-rhac'e andembo'dying apreferred form of the present invention.

Figure 2 :is a top view oithe burner-in place. Figure 3 is a view partly in section of an improved pressure regulator and shut-cit valve forming part of the burner assembly.

Referring to-the drawings, in Figure 1 there is 'autoinaticfpressurecontrol valve '50 which serves ing miiier tube 54 having -a slotted bracket 53- welded to the end thereof and cooperating with a set screw 58 on the bottom "of the gas orifice shown a furnace 'Hl -comprising-fthe firegrate l4 and fuel door opening 16. The burner assembly, generally designated '18, mounts on-a plate 2'llhaving a horizontally pivoted upper section 22. The plates and'22alout 'the dooropem ing and the unit is held in position by a door holder rod 24 which is somewhat longer thaiithe width of the fuel door opening it. A chain 26 is secured to the rod 24 and has a screw-eye 28 bvwhich the mounting plate 20 may be tightly clamped in theposition illustrated. Slidably secured to the closure plate 2c is the curved cira cul'ar mixture-tube 30, the left-hand endof which proiects somewhat-outside the door in a straight section 32"and the right-handeird of which carries the burner head 34. Surrounding the mixture tube is a secondary air duct 36 of rectangular form which has a distribution box 38 by which secondary air is directed downwardly into the zone around the burner head 34.

The burner head 34 comprises two identical shell-shaped stampings 36 and 38 which are joined together by a straight connector piece 40 at the left-hand edge. This provides a narrow circumferential slot 42 through which gas and air are delivered for combustion. The automatic pilot tube 44 is also mounted on the door plate 20' within the secondary air duct 36' and has a downwardly extending tip 46 adjacent the burner head 34. Mounted on the doorplate 20 is a gas inlet 48 which may be connected to a gas supply nature 52. The mixer tube '54 'may 'be'moved toward and away from the orifice--52 and because of the relatively large diameter of the orifice 'fixture, the rimar air opening at the endoi mixer tube may be controlled by the proximity oi the 52 to the end-oi tube 54.

The gas regulator valve 50 is illustrated in detail in Figure 3 from which it will be seen that the valve on cooperates with the seat 62 "to o en crelose communication with the inlet at the right and the outlet at the left. The valve stem B4 is connected to a flexible "diaphragm so and carries a weight 68. The diaphragm is thus responsive to the pressure above the seat "62 which is outlet pressure and has a "normal fluctuation which 5 serves to adius't "the valve to to whatever posifrom is required to maintain the outlet pressure constant.

For the purpose or providing manually controlled "shut off of "gas, the stem 64 is provided with a headed upward extension To which is "surrounded by a small tube 12 slidable in the cover H. The "tube 12 "has a shoulder beneath the head of extension To and has ahead at its top. A bell-crank lever 18 is pivoted at 80 on the cover 14 and is connected for manual actuation by area 82 which is pivotally connected to the door section-ZL- A suitahle spring and collar arrangement at 84 provides a yielding connection to permit further movement of rod 82 after valve is tightly engaged with the seat 62. For further disclosure of the details of the various elements of the burner such as the automatic pilot and thermostatic control circuit, reference may be had to my above mentioned prior patent.

In operation, it will be seen that when the unit by a Suitab CO -Iith as inlet feeds an 5.5 shut off by reason of the rod 82 having rotated the bell-crank l8 counterclockwise to close the valve 60. After the unit is secured in position, the pilot burner 46 may be lighted and the access door 22 closed. If the room thermostat is calling for heat this will open the automatic control valve 54' so that gas is now delivered to the orifice 52 because both valves 50 and 54' are open. The mixture is accordingly delivered to the burner head 34 where it is ignited by the pilot flame.

The flame produced by the burner head disclosed wipes the side walls of the combustion chamber and exchanges heat from the bottom up. With the horizontal gas burning port, flames and hot gases are naturally sent in this direction since they are projected toward the side walls and the natural tendency is for them to rise. In

' said opening, and a tension member of adjustable addition, the ineffective heating surface at the front of the fire pot below the fire door is not scrubbed with either flames or hot gases since in most furnaces there is little heating surface at this point. In the :present construction, secondary air is introduced at this point and passes downwardly beneath the burner head 34 so that it may .be introduced under the flame to assure proper aeration. It has been found that a much more stable combustion and higher efficiency are produced by this construction. Furthermore, the burner operates over a much wider range of inputs and one size burner can cover the range previously requiring two different sizes of burner.

The telescoping mixing tube 54 provides :a convenient adjustment for the primary air volume and also one which is not readily clogged by collection of lint. It furthermore makes adjustment for different depths of fire door construction more convenient.

It will thus be seen that the present invention provides a simple, low-cost construction in which more convenient attachment of the unit is possible and which produces higher efficiency of operation and more reliable controls.

In addition, the sliding and telescoping mounting of the mixture tube on the mounting door, and of the secondary air duct and pilot tube as well, permit ready adjustment of the burner head at any required distance from the mounting door thus adapting the unit to furnaces of different sizes and depths of fuel door opening. Furthermore, such adjustment in no Way disturbs the permanent position of the controls and gas inlet mounted on the outside of the door and thus adapts them to standardized roughing-in dimensions based on the position of the normal fire door.

Iclaim: I 1. A mount for a gas burner assembly to be length extending between said elongate member and closure.

2. A mount for a gas burner assembly to be -.used in connection with the fire box and fuel "opening of a building heating unit including an auxiliary closure member for the fuel opening of said heating unit which comprises a stationary portion for supporting a gas heating unit; adapted to be temporarily and removably mounted in said fuel opening, a movable door portion adapted to permit access to the interior of said heating unit, an elongate member having a length substantially equal to the width of the closure member and insertable through the fuel opening to a position inside the fire box and extending across said opening, and a tension member of adjustable length comprising a screw-eye mounted in the closure and a chain extending between said' elongate member and screw-eye.

HAROLD E. HANDLEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 382,510 Carrico May 8, 1888" 440,929 Stirling Nov. 18, 1890 1,424,739 Reeves Aug. 1, 1922 1,513,260 Mooring Oct. 28, 1924 1,675,133 Riayfield June 26, 1928' 1,780,896 Anderson Nov. 11, 1930 1,887,150 Torney Nov. 8, 1932' 1,921,152 Caldwell Aug. 8, 1933 1,986,311 White Jan. 1, 1935 2,070,535 Hansen Feb. 9, 1937 2,131,221 Crary Sept. 27, 1938 2,178,703 Robbins Nov. 7, 1939- 2,183,836 Gordon Dec. 19, 1939 2,200,264 Dennis et al May 14, 1940 2,215,983 Smith Sept. 24, 1940 2,295,784 Handley Sept. 15, 1942 2,297,856

' Ames Oct-6, 1942.

Images