US2467209A - Horizontal burner pot and vaporizing cup - Google Patents

Description

April 12, 1949. B. HAYTER HORIZONTAL BURNER ,POT AND VAPORIZING CUP Filed July 29, 1944 2 Sheets-Sheet 1 i lll I2 @eeeeee eeeeefle 99900 l DILJ,L

April 12, 1949. B.'HAYTER 2,467,209

HORIZON TAL BURNER POT AND VAPORIZING CUP Filed July 29, 1944 I 2 Sheets-Sheet 2 g g o l/ g a Q g W 2; I 1 0) l o l 20 Q 35 f O l I 2;

6 o l I 2 1 o 5 3 .56 a j a g v L J 9/ f D /7 Patented Apr. 12, 1949 HORIZONTAL BURNER POT AND VAPORIZING CUP Bruce Hayter, Santa Fe, N. Mex., assignor, by mesne assignments, to Breese Burners, Inc., Santa Fe, N. Mex., a corporation of Delaware Application July 29, 1944, Serial No. 547,118

10 Claims. 1

My invention relates to an improvement in burner pots for pot type burners and has for one purpose to provide an improved pot for use with horizontal pot type burners.

Another purpose is to provide an improved liquid fuel vaporizing cup for use with pot type burners.

Another purpose is to provide a vaporizing cup having an improved recuperating member.

Another purpose is to provide improved means for guiding or directing air to the space about the vaporizing cup of a hydroxylating pot for pot type burners.

Another purpose is to provide improved means for supportin the vaporizing cup for a horizontal burner pot.

Another purpose is to provide an improved horizontal pot type burner.

ther purposes will appear from time to time in the course of the specification.

I illustrate my invention more or less diagrammatically in the accompanying drawings wherein:

Figure l is a plan view with parts in section;

Figure 2 is a section on the line 2-2 of Figure 1; Figure 3 is a section on the line 3-3 of Figure 2;

Figure 4 is a plan view of the fuel cup on an enlarged scale; and

Figure 5 is a section on the line 5-5 of Figure 4.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings I generally indicates a cylindrical outer housing wall having a bottom or end wall 2 provided with an aperture 3. 4 generally indicates a burner pot which includes a cireumferential side wall 5 and a bottom or end wall 6. It may also include an outwardly extending flange 'l with a cylindrical rearward extension 8 adapted to engage and be secured to the free edge of the housing wall I. 9 is any suitable flame ring which partly closes the top or end of the pot, and is shown as having a central flame aperture ill. The pot side wall 5 is shown as having a plurality of primary air inlets I [located at various distances from the end of the pot. The primary air inlets are shown as arranged in a plurality of circumferentially extending rows. Any suitable means may be employed for delivering secondary air to the primary mixture. I illustrate for example a single row of secondary air inlets l2 inclined toward the fiame ring opening Ill. The secondary air inlets are shown as both larger and more closely spaced than the primary air inlets l i3 is an access aperture in the housing wall I. It is aligned with the corresponding access aperture l4 in the pot wall 5. The aperture l4 may be surrounded by any suitable fitting or ring l5 which receives the ledge ll of the closure plug l6. l8 is any suitable chain which may be secured to the plug l6 at one end and to the housing wall I at the other, to prevent loss of the plug. When the plug I6 is removed access may be had through the apertures l3 and I4 to the space within the pot wall 5. For example, in initiatin combustion, fuel in the below described cup may be lit through the apertures.

I illustrate a sheet metal cup 20 which may for example be of stainless steel. It is shown as set in a baflle having a horizontal portion 2| with a flange or sleeve 22 through which the cup 20 passes and to which it may be secured, for example by welding. The baffle 2| has end portions 23 shown as having flanges 24 adapted to be welded or otherwise secured to the inner face of the pot wall 5. The battle 2| may be formed of a single strip of stainless steel or any other suitable material and may have generally parallel front and rear edges 25, 26. There is thus a clearance provided, as at 21, between the edge 26 and the rear end or bottom 6 of the pot. I find it advantageous to employ a foraminous baffle 28 about the upper edge of the cup 20, preferably overlying the part of the cup nearest the open end of the pot.

An additional supply of air may be provided for the space between the baffle 2| and the adjacent part of the pot. I illustrate for example a row of apertures 30 which extend about that part of the pot Wall which defines, with the bafile 2| and the portions 23, a pilot space.

Liquid fuel may be delivered to the pot 20, from any suitable source, along the fuel duct 3|, which extends to a fitting 32 having an air inlet 33 which may for convenience be located in the space between the bottom of the pot and the end wall 2 of the surroundin housing. 34 indicates a feed pipe insert through which liquid fuel is delivered to the interior of the cup 23. It is surrounded by an outer member 35, in screw threaded relation with the fitting 32 and the sleeve 36 which extends rearwardly from the cup 20. 31 is a recuperator ring which may for example be of cast metal and which preferably fits snugly within the circumferential side wall of the cup 20. It is cut away as at 38 in line with the area of admission of the liquid fuel, and is spaced away from the fuel inlet, to prevent heat conduction thereto.

It will be realized that, whereas I have described and illustrated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of my invention.

I therefore wish my description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to my precise showing.

The use and operation of my invention are as follows:

I illustrate a burner of the hydroxylating type in which a liquid fuel is vaporized by the heat of combustion taking place in or near the pot. The liquid fuel is supplied, from any suitable source of supply, along the duct 3|, the fitting 32, and the feed pipe insert 34. In the normal use of the device combustion is continuously taking place within or at the open end of the pot 4. Any

suitable means may be employed, not herein shown in detail, for controlling the rate of flow of the liquid fuel to the vaporizing cup. 'I may employ for example a float chamber assembly with a manual or automatic control. Assume that liquid fuel is being supplied at the minimum or pilot flow rate. A supply of air mixes with the fuel, being delivered to the fuel along the duct 34. The air assists in forming the primary mixture but its major purpose is to keep the oil line cool. Additional primary air is supplied through the inlets 39 and through such of the inlets II as are in communication with the space above the bafile 2|. The concentration of the extra inlets 30 provides an ample air supply to maintain combustion in the cup 20 or above and about its upper edge. The foraminous baflie 28 assists in steadying this pilot combustion. The recuperator ring 31 serves as a heat storage device to provide a carry over of heat sufiicient to permit the flame to come up rapidly when the rate of flow is increased sub- 3 stantiallyabove the pilot rate. However, no part of the ring 31 is near enough the actual fuel inlet to cause overheating and coking or deposit of carbon and tarry material. The baffle portions 2! and 23, with the surrounding upper part of the pot, constitute in effect a pilot chamber in which a relatively limited combustion may take place when little heat is called for. The combustion is sufficient, however, to keep the recuperating ring adequately heated and to initiate a starting flame. If the rate of liquid fuel inflow is sharply increased the rate of vaporization increases and combustion advances from the pilot area about the edge of the cup. The inlets I I then constitute the primary air supply means and a primary mixture is formed in the cup, which receives secondary air, through the inlets l2, to produce a final and fully combustible mixture. This mixture then burns at or beyond the inlets I2 and, at the high fire, flame may project through the flame aperture and be delivered to a substantial distance laterally from the pot. I may for example employ a booster fan and motor unit as illustrated in Figure 3. I illustrate for example the motor 50 which may be provided with any suitable conductive connections '52. Any suitable means, such as the rheostat 53 may be employed to vary the speed of rotation of the motor. 54 is an air baffle ring connected by securing clips to spring elements 55 associated with the motor which engage the edges of the aperture 3 of the end wall 2 of the housing. is the fan proper. Any other suitable means may be employed for maintaining and varying the proper flow or pressure of air but .I find the booster fan to be a convenient solution of the problem.

. I claim:

1. In combination, in a hydroxylating burner, a burner .pot having a circumferential wall provided with a plurality of air inlet apertures, a

vaporizing cup within said pot, a fuel duct extending to and in communication with the interior of said cup, said cup being of relatively thin metal stock and a heat storage ring in said cup, of relatively thick metal, broken away adjacent the area of fuel delivery to the cup, and out of contact with said fuel duct.

2. In combination, in a hydroxylating burner, a burner pot having a circumferential wall provided with a plurality of air inlet apertures, said pot having a horizontal axis, an open end and a closed end, a bathe in said pot, lying in general parallelism with the axis of the pot, said bafile defining, with adjacent portions of the pot, a pilot space, a vaporizing cup in said pot having a circumferential side wall, a closed bottom and an open top, the top of said cup lying in said pilot space, and means for controllably deliverin liquid fuel to the interior of said cup for vaporization.

3. In liquid fuel vaporizing means for pot type burners, an open topped cup, means for delivering liquid fuel to the interior of the cup, and a foraminous baffle positioned above the upper edge of the cup and including a portion overlying part of the interior of the cup and a portion extending outwardly beyond the edge of the cup.

4. In liquid fuel vaporizing means for pot type burners, an open topped generally cylindrical cup. means for delivering liquid fuel to the interior of the cup, and a foraminous baffle positioned above the upper edge of the cup and including a portion overlying the interior of the cup and a portion extending outwardly beyond the edge of the cup, said interior overlying por tion having an arcuate inner edge concentric with the axis of the cup.

5. In a pot type burner, a horizontally axised pot having a circumferential wall, a closed end wall and an open end, said circumferential wall having a plurality of air inlet apertures located at various distances from the ends of the pot, a transversely extending baffle lying in a plane generally parallel with the axis of the pot, and having a width less than the length of the pot, one edge of said baffle being adjacent but spaced somewhat from the closed end of the pot, the ends of the baffle being secured to the inner face of the circumferential wall of the pot, an open topped cup mounted on said baffle, the interior of the cup being in communication with the space above said baflle, and means for delivering a liquid fuel to the interior of said cup for vaporization.

6. In a pot type burner, a horizontally axised pot having a circumferential wall, a closed end wall and an open end, said circumferential wall having a plurality of air inlet apertures located at various distances from the ends of the pot, a transversely extending baflle lying in a plane generally parallel with the axis of the pot, and having a width less than the length of the pot, one edge of said baiile being adjacent but spaced somewhat from the closed end of the pot, the ends of the ballle being secured to the inner face of the circumferential wall of the pot, an open topped cup mounted on said bafiie, the interior of thecup being in communication with the space above said baffle, and means for delivering a liquid fuel to the interior of said cup for vaporization, the opposite edge of said baflle being spaced inwardly a substantial distance from the open end of the pot.

7. In a pot type burner, a horizontally axised pot having a circumferential wall, a closed end wall and an open end, said circumferential wall having a plurality of air inlet apertures located at various distances from the ends of the pot, a transversely extending baffle lying in a plane generally parallel with the axis of the pot, and having a width less than the length of the pot, one edge of said bafile being adjacent but spaced somewhat from the closed end of the pot, the ends of the baffie being secured to the inner face of the circumferential wall of the pot, an open topped cup mounted on said baffle, the interior of the cup being in communication with the space above said baffle, and means for delivering a liquid fuel to the interior of said cup for vaporization, said air inlet apertures being generally uniformly distributed about said circumferential wall, additional apertures being located in the portion of the circumferential wall above said baflle to provide an excess supply of air to the space defined between the upper surface of the bafile and the overlying portion of the circumferential pot wall.

8. For use in a pot type burner, a liquid fuel vaporizing element including an open topped cup of thin metal, a liquid fuel inlet duct extending to said cup and a heat storage insert of metal substantially thicker than the metal of which the cup is formed, said insert being in the form of a broken ring, with the break in the ring aligned with the liquid fuel inlet duct, all parts of the heat storage body being spaced away from the area of admission of liquid fuel along said duct to the interior of the cup.

9. In liquid fuel vaporizing means for horizontal pot type burners, an open top cup and means for securing it within the interior of a pot, a heat storage element in said cup in heat-conducting relationship with the rest of the cup, a fuel duct extending to said cup at a point spaced away from said heat storage element, and a foraminous bafile extending outwardly from the lip of the cup.

BRUCE HAYTER.

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

UNITED STATES PATENTS Number Name Date 2,162,844 Jenson June 20, 1939 2,219,349 Turner Oct. 29, 1940 2,275,002 Barr Mar. 3, 1942 2,287,346 Fishel June 23, 1942 2,326,221 Hill Aug. 10, 1943 2,346,814 Breese Apr. 18, 1944 2,348,721 Breese et al May 16, 1944 2,355,416 Breese Aug. 8, 1944 2,357,997 Breese Sept. 12, 1944 FOREIGN PATENTS Number Country Date 20,038 Australia Aug. 15, 1935 47,013 France Aug. 31, 1936 (Addition to 199,717) 465,736 Great Britain May 13, 1937 478,780 Great Britain Jan. 25, 1938 794,972 France Dec. 26, 1935 816,124 France Apr. 26, 1937

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