US2522743A

US2522743A - Fuel mixing device

Info

Publication number: US2522743A
Application number: US734323A
Authority: US
Inventors: Brousseau Fred; Philip J Brousseau
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-13
Filing date: 1947-03-13
Publication date: 1950-09-19
Anticipated expiration: 1967-09-19

Description

Sept 19, 1950 RBRoUssr-:AU x-:TAL 2,522,743

FUEL-MIXING DEVICE Filed March 13, 1947 IN VEN TORS Patented Sept. 19, 1950 OFFICE 4 FUEL MIXING DEVI-CE I FredBrousseau, Schenectady, and Philip J.

Brousseau, Peasleeville, N. Y.

Application March 13, i947, serial No. tease?,

This invention relates to -fuelmixing devices and more' particularlyto `an oil and air mixer. lt `istuan object of theinvention to provide a Vmixing device which willcause a thorough commingling `of the oil andairto lproduce a highly combustible fuel mixture.` i j: A further object of `the invention resides in injectingstreams of oil into an air line under pressure, the intersecting ow of oil and air resul'ring in a breaking up of the oil into small particles and a thorough mixing of the oil particles and air.

A still further object of the invention resides in providing a mixing device Whereinthe air supply for the fuel line serves to exert a pressure on the oil supply to inject the oil into the air stream prior to its discharge from the burner nozzle.

It is also an object of the invention to provide an atomizer in the fuel line between the mixing device and burner nozzle to break the fuel mixture into a ne spray or mist before being discharged.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification and wherein like numerals are employed to designate like parts throughout the same,

Fig. 1 is a longitudinal sectional view of the mixing device and fuel line,

Fig. 2 is a section taken on line 2-2 of Fig. l, and

Fig. 3 is an enlarged section taken on line 3-3 of Fig. 1.

In the drawing wherein for the purpose of illustration a preferred embodiment of the invention is shown the numeral 5 denotes an oil holding chamber having an integral top wall 6 and removable bottom wall 1. The bottom wall has a marginal flange 8 having screw-threaded connection with the Outer wall of the chamber, as`

at 9. The center of the bottom wall has a screwthreaded opening II) adapted to receive the lower end of `a mixing tube II extending vertically of the chamber 5 to a point spaced from the top wall. An oil inlet I2 is :provided in the wall of the chamber intermediate its ends having a pipe I3 leading therefrom to a suitable oil supply source. Oil is admitted into the chamber until the volume reaches a level just below the upper end of the tube II. An air inlet I4 is provided in the top wall 6 connected with a pipe I5 leading to a source of air under pressure. The upper end of mixing tube II has a valve seat I6 formed aolaims. (oizfnfss)A i ftherein for co-action with needle valve Il which regulates the admission of air into the mixing tube.` The needle valve extends through the top `wall 6 and is threaded in a bushing I8 secured the Wall. A hand knob I9 is formed integral with the outer end of the needle valve for controlling the same to regulate the flow of air into the mixing tube. The tube II adjacent its lower lendv is provided with diametrically opposed orifices 26 and 2l for admitting oil into the tube. The orices have

valve seats

22 and 23 formed therein for co-action with the

needle valves

24 and 25 mounted in the wall of the chamber in diametrically opposed relation. The

needle valves

24 and 25 are threadedly mounted in

bushings

26 and 21 and have hand knobs 2e and 29 at their outer ends for adjusting the valves to control the flow of oil through the oriiices 2G and 2|. The bore of the tube II at its lower end is enlarged and screw-threaded, as at Btl, to receive the end of the fuel line 3| extending to the burner nozzle, not shown. A ball valve 32 is in terposed in the fuel line which closes the line if any back pressure builds up in the line between the valve and burner nozzle. An atomlizer tube as is connected in the line between the ball valve and burner nozzle and as shown in Fig. 3 consists of a solid body 34 having a series of parallel longitudinal lpassages 35 therethrough which break the fuel mixture into a fine spray or mist.

In operation, the mixing chamber 51 holds a supply of oil introduced into the chamber through inlet I2 while air under pressure is introduced into the upper end of the chamber through inlet I4. The level of the oil in the chamber is maintained below the upper end of the mixing tube II so the air entering the chamber is free to pass into the upper end of the mixing tube and ow therethrough. The flow of air into the mixing tube is regulated by the needle valve II which is manually adjustable. The oil under the pressure o-f air in the upper end of the chamber is forcibly ejected through the orifices 2! and 2l to intercept the stream of air flowing through the mixing tube. The flow of oil through

orifices

20 and 2| is regulated by

needle valves

24 and 25 which are manually adjustable. The oil discharge orifices being diametrically opposed to each other and at right angles to the flow of air through the mixing tube cause the oil to disintegrate into une particles and become thoroughly mixed with the air. The mixture of air and oil fio-ws through the fuel line 3| and passes through an atomizer 33 before it reaches the burner.. The ball valve 32 cheat@ 3 serves to close the fuel line should a back pressure occur in the line between the valve and burner.

It is to be understood that the form of our invention herein shown and described is to be taken as a preferred example of the same and that changes in the shape, size and arrangement of the parts may be made Without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described our invention, we claim:

1. A fuel oil and air mixing device comprising a chamber adapted to contain a supply of fuel oil, a mixing tube disposed centrally of said chamber having its upper end opening into the chamber above the level of the oil, said tube having a valve seat in its upper end and diametrically opposed orifices with valve seats ad#- jacent its lower end,` `a fuel line leading from the lower end of said mixing tube, an air supply v.conduit connected to the upper endrof said chamber `for supplyingv a continuous stream of air under pressure to the chamber above the level Of the fuel oil, a valve member co-acting with the valve seat in the upper end of said mixing tube for regulating the 110W of air throughrsaid tube, and valve members co-acting with the valve seats of the orifices in the lower end of said tube for l regulating the opposed streams f oil forcibly ejected from the orices across said tube through the stream of air passing therethrough whereby the oil is broken into fine particles for thorough mixing with the stream of air.

2. A device as described in claim 1 including a fuel atomizer connected to said fuel line consisting of a Vsolid body having a series of parallel longitudinal passages therethrough.

3. A device as described in claim 1 including a fuel atomizer connected to said fuel line and a ball valve interposed in the fuel line actuated by the back pressure to close said fuel line.

FRED BROUSSEAU. PHILIP J. BROUSSEAU.

REERENCES CITED .The following references are of recordr in the le of this patent:

lNumber Name Date K 418,582 Monsanto Dec. 31, 1889 1,118,237 Saint-@vify Nov. 24, 1914 1,832,503 Rasmussen Nov. 17, 1931 2,054,734 Akast et al. Sept. l5, 1936 2,067,412 Pickup Jan. 12, 1937