US1570966A - Oil burner - Google Patents

Description

Jan 26 1926.

W. K. KISE OIL BURNER INVE NTOR l V/ lam/f. K/se.

Filed March 16 1925 Patented Jan. 26, 1926.

UNITED STATES R 1,570,966 PATENT OFFICE.

WILLIAM KENT RISE, OF KANSAS CITY, MISSOURI, ABSIGNOB TO THE EVERBBI'II STOVE COMPANY, OF KANSAS CITY, MISSOURI, A CORPORATION 01' MISBQUBL OIL BURNER.

Application filed March 18, 1925. Serial R0. 15,778.

State of Missouri, have invented certain new 7 and useful Improvements in Oil Burners;

and I do declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this application.

This invention relates to oil burners and articularly to oil burners for domestic eaters.

The primary object of the invention is to provide a simplified, inexpensive, efiicient oil burner whereby hydrocarbon distillates can be converted into vapor or gasified to combine with air to form a combustible mixture.

It is also the purpose of the invention to provide means whereby the outlet for the vaporizing chamber can be closed ofi In a convenient manner to prevent va or from passing into the distributing cham er of the burner and finally seeping out into the room when the supply of oil to the burner is cut off. Ordinarily, oil burning domestic heaters employ a needle valve in the supply pipe, which feeds oil to the vaporizing chamber, the vaporization, being the result of heat. When it is desired to discontinue the burner, the needle valve is closed but since the vapor izing chamber is still hot. the trapped oil will continue to vaporize for a short time but the period of time is long enough to permit enough oil to vaporize and pass out through the distributing chamber unignited into the room. The result is that an objectionable odor permeates the room and for tween the two valves and as soon as the vaporizlng chamber cools down, the va pors w ll condense down to oil. This entlrel eliminates the objection above enumerate The closing-off valve for the vaporizing chamber is of novel construction andI prefer employ it together with the burner castlng herein illustrated to provide a c0m plete unit.

The' novel construction of the invention vvlll be apparent by reference to the followmg descrlption in connection with the accompanyl ng drawings, in which-- F g. 1 1s a perspective view of a complete burner unit.

F1g. 2 is a cross sectional view through the mlxing chamber and the distributing chamber on line 2--2 of Fig. 1.

Fig. 3 is a detail perspective view of one of the disks having orifices through which the combustible mixture passes to be ignited.

Flg: 1s a cross sectional view through the vaporizing chamber of the burner and through the distributing chamber of the burner on line 44 of Fig. 1.

Fig. 5 is a perspective view partly in sect1on of the closing ofi' valve, and

Flg. 6 is a vertical, longitudinal, sectional vlew through the closing-oil valve, the valve element and stem being shown in elevation.

The main part of the burner consists of a hollow casting 1. substantially in the form of a rectangular tube or box closed at its respective ends and having openings 2 in the top Wall 3 thereof, the openings receivmg perforated disks 4 through which the mixture passes to be ignited. The distributmg chamber is closed except for the top openlngs and an inlet opening 5, which constitutes the discharge end of a tubular mixlng chamber 6. The tubular mixin chamber has one end distant from its discharge closed, as by a wall 7. The wall 7 hasan opening 8 to receive a vapor pipe 9 leading from t e vapor generator. The side of the mixing chamber is provided with an air inlet port 10, at the edges of which are guides 11 and 12 toreceive a sliding screen frame 13, having a rectangular panel or screen 14 adapted to be moved on the guides is proshelf is provided with longitudinal openings 17 to admit air from the bottom thereof and just above the slots or openings 17 are vapor distributing tips or disks 18, inclined in the annular seats 19 above the floors of the recesses 20, which communicate with the space in the casting 1 through the medium of openings 21, spaced above the floors of the recesses 20 and above the floor of the hollow casting 1.

The vapor generator is shown as comprising a tube 22 in line with the flame which issues from the disks 18 and also above the groove 17 so that it can be heated from either source.

At the inletend of the vaporizing chamber 22 is a needle controlling valve 24, which will control the supply of oil to the vaporizing chamber 22. The vaporizing chamber may be supported at one end by the bracket 25, the opposite end of the vaporizing chamber being held by the wall 7, as clearly indicated in Fig. 1.

At the end of the vaporizing chamber is a valve. The valve is in a casing 26 having a vertical orifice 27 in which is a rotatable stem 28, passing through a packing gland 29. The packing consists of rings, one of which has a lower edge wedge-shaped in cross section, as indicated at 30, to fit in a corresponding groove 31 in the valve casing. The upper edge of the ring is inclined from each side to the center to provide a kniferidge 32 to abut against the flat face 33 of the upper ring 34. The upper ring has its upper face inclined toward the center from opposite sides to form a knife-contacting ridge 35 to engage the cap 36 so that when the cap is screwed onto the collar 37, the packing will be made tight, yet the valve stem 28 can rotate. The valve stem is adapted to be rotated by a tool which may engage the head 38 and at the lower end of the valve stem is an offset or eccentric crank pin 39, which engages a hole 40 in a reciprocatory cylindrical valve 41, at one end of which is a cone 42 to engage the valve seat 43 to vary the effective port area of the discharge end of the vaporizer. The valve 41 is provided with longitudinal grooves 44 for the passage of vapor into the mixing chamber. By turning the valve stem 28, the cone 42 on the valve member 41 can be moved into and out of contact with the seat to vary the effective port area in an efficient way. The valve is tight and its construction is such that leakage will be prevented.

The special advantage of the valve in the casing 26 is to cut off the unconsumed vapor when it is desired to discontinue the operation of the burner. The operation of the device would be as follows:

Suppose it is desired to put the burner into operation. The oil is turned on through the needle valve 24. The vaporizer is primed so that the oil will be converted into vapor. The valve in the casing 26 will be open to admit the vapor into the mixing chamber where it will mix with air entering through the opening 10 so that it can be ignited from the disks 4 and also from the disks 18. As soon as the priming has taken place, there will be enough vapor issuing through the ports 21 to maintain the vaporizer at sufficient temperature to vaporize the oil. The vaporizer may have a suitable packer or filtering medium in it, if desired. The orifice or opening 10 will be normally closed by the screen to prevent the priming fluid from igniting the mixture through the opening. The screen may also vary the effective port area of the air opening.

As soon as the device is functioning the valve in 26 will be open. When it is desired to discontinue the operation of the burner, the valve in 24 will first be closed, then the valve in 26 will be closed; therefore, the unburnt vaporized fuel will be trapped in the vaporizer and as soon as the vaporizer cools, the vapor will be condensed. This will prevent the unvaporized oil from passing out to the atmosphere, causing the objectionable odor frequently observed when tliife supply of oil to the burners has been out o It will be seen that the invention is simple, rugged and adapted for operation so that liability of its getting out of order will be reduced to a minimum.

What I claim and desire to secure by Letters-Patent is:

1. An oil burner comprising an elongated, chambered body having burner openings in its top and a lateral shelf having a longitudinal trough and air slots between the trough and the chambered body, the body having inclined recesses communicating with its chamber, a generating tube located above the shelf and in the line of discharge from said recesses, a mixing chamber communicating with the generating tube and with the body chamber, and means for controlling intake to the mixing chamber.

2. In an oil burner, a casting comprising a chambered body having top burner openings and a shelf having an inclined rear wall provided with recesses having communication with the body chamber, the shelf comprising a trough and having air slots be tween the trough and said recesses, a generator tube above the shelf and in line of discharge from said recesses, a mixing chamber in communication with the generator tube and with the body chamber, and means for controlling flow to the mixing chamber.

In testimony whereof I aflix my signature.

WILLIAM KENT KISE.

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