US1667072A - Proportional gas and air mixing device - Google Patents

Description

April 24, 1928.

J. L. KLUPPEL PROPORTIONAL GAS AND AIR MIXING DEVICE Filed July 24. 1926' 2 Sheets-Sheet 1 f/Mmi April 24, 1928. 1,667,072

J. L. KLUPPEL I PROPORTIONAL GAS AND AIR MIXING DEVICE Filed July 24. 1926 2 Sheets-Sheet 2 1524 Fiji;

Patented Apr. 24, 1928. I

UNITED STA JOHN L.

1,667,072, TES PATENT OFFICE.

KLUPPEL, OF HOUSTON, TEXAS, ASSIGNOR TO PORTABLE ROTARY RIG COM- PANY, OF HOUSTON, TEXAS, A CORPORATION OF TEXAS.

PROPORTIONAL GAS AND AIR MIXING DEVICE.

Application med um 24, 192 Serial No. 124,588.

This invention relates to new and useful improvements in a proportional gas and air mixing device.

One object of the invention is to provide a mixing device specially designed for the utilization ofnatural gas as a motive fuelin internal combustion motors.

Another object of the invention is to provide a mixing device of the character described, of such construction that the supply of gas and air will be automatically proportioned so as to. supply the'proper mixtures for different speeds of the motor.

lVith the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein Figure 1 shows a side elevation of the mixing device associatedv with an intake manifold of an internal combustion motor. F igure'2'shows a vertical sectional view thereof.

Figure 3 shows a horizontal sectional view taken on the line 3-3 of Figure 2, and

Figure 4 shows a vertical sectional view taken on the line 4-4 of Figure 2. Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 designates an intake manifold adapted to be connected to an internal combustion motor in the usual way. The numeral 2 designates-an ordinary ,gasoline carburetor adapted to be usedfor starting, or when the natural gas is not available. The intake pipe 3 leading from this carburetor to the manifold may be controlled by the usual butterfly valve through the arm 4, connected to the stem of said valve and the intake pipe 3 is also controlled by the shut-off valve 5, controllable through the arm 6 connected to the stem of said valve and this valve 5 may be adjusted to any desired position and there maintained by the conventional rack-and-dog arrangement 7. The intake pipe 3 has the tubular insert 8 connected into it, said insert being ,in the form of a T with a flange connection 9 to which the natural gas carburetor 10 is bolted. This mixing device is formed with an intake pipe 11 controllable by the valve 12, which may be manipulated through the arm the oppositely disposed 13, fixed to the stem of the valve, said valve 12 being located between the mixing device 10 and the intake pipe 3. Formed integrally with the intake pipe 11 there is the cylindrical member 14 whose outer end is closed by the cap 15' bolted thereto. A cup-shaped plunger 15 is reciprocablein the cylindrical member 14 and arranged within the plunger 15'and connected thereto there is a sleeve valve 16, which works'over the inner end of the nipple 17. This nipple is fitted through a gland 18, which is bolted to the side of the intake pipe 11, and projects up into said pipe and its projecting end is provided with a lateral discharge slot 19 adapted to be opened and closed by the valve 16. The nipple 17 is secured in position by means of the clamp nut 20 which is screwed on to the slotted end of the gland 18 and the outer end of the nipple 17 is formed with a connection 21 into which the gas line 22 is threaded. Mounted on the gland 18 there is a tubular plunger guide 23 over which the plunger 15 works and this guide has air ports 24, 24, which are aligned with the intake-pipe 11 and which contract downwardly.

The discharge slot 19 faces toward the the valve 12 opened. With the motor now runningthe suction produced. by the operation of the motor will create a partial vacuum in the end 27 of. the cylindrical member 14 and this vacuum will operate to lift the plunger 15 and the valve 16 to open the discharge slot 9 as well as the ports 24. This will admit gas through the nipple 17 and air through the intake pipe 11 which will mingle creating an explosive mixture and as the speed of the motor is accelerated the vacuum in the outer end 27 of the cylindrical member 14 will be increased causing the plunger 15 to rise and as it rises the amount of air admitted through the ports 24 will be accelerated or increased in greater proportion than the amount of gas, due to the upwardly widening form of the air ports 24 and thus a lean mixture will be admitted to the motor when running at high speed. As the motor is slowed down the vacuum in the outer end 27 of the cylindrical member 14 will be decreased and the plunger 15 and the valve 16 will descend thuscutting off the supply of gas and air.

It is to be noted that the sleeve valve 16 at its lower end is slightly above the lower end of the plunger 15 so that the lower end of the slot 19 will not be entirely covered when the plunger is in its lowermost position, thus admitting a small amount of gas to keep the motor running idly and on the upper side of the gland 18 there is a channel 28 cut across the same to admit a small amount of air when the plunger is in its "lowest position to mix with the gas admitted to keep the motor running idly.

It is thus apparent that when the motor is running at a high speed a lean mixture will be provided and as the motor slows down the supply of air will be cut off, in greater proportion than the supply of gas, so as to give a richer mixture at low speeds.

lVhat I claim is:

1. A mixing device including a fuel mixture intake conduit, a cylindrical member carried by said conduit and closed at its outer end, a plunger in said cylindrical member adapted to control the flow of air through said conduit, a nipple having a longitudinal discharge opening through the wall thereof into said conduit, and a sleeve valve fitted over the nipple and movable with said plunger and controlling said opening, there being a by pass connecting the conduit with said cylindrical member above the outer end of said plunger.

2. A mixing device including a fuel mixture intake conduit, a cylindrical member carried by said conduit and Whose outer end is closed, a cup-shaped plunger reciprocable in said cylindrical member, a plunger guide spannin said conduit and formed with air ports aligned with said conduit and over which said plunger works to control said ports, a gas discharge tube projecting into said guide and formed with a longitudinal discharge opening through the wall thereof, a sleeve like valve carried by the plunger and working over said tube and controlling the opening thereof, said device being provided with a by pass leading from said conduit and entering said cylindrical member beyond the outer end of the plunger.

3. A mixing device including a full mixture intake conduit, a cylindrical member carried by said conduit and whose outer end is closed, a hollow plunger reciprocable in said cylindrical member, a plunger guide over which the plunger works and having air ports aligned with said conduit, and controlled by said plunger said device being provided with a by pass leading from the. outer end of the cylindrical member beyond the outer end of the plunger and connected into said conduit, :1 gas inlet conduit having a longitudinal discharge opening through its wall and into said intake, conduit, a sleeve valve carried by the plunger and working over said gas inlet conduit and controlling said opening.

4. A mixing device including an intake conduit, a cylindrical member *arried by said conduit and having its outer end closed, a plunger reciprocable in the cylindrical mem her and adapted to control the flow of fluid through said conduit, a gas conduit having a longitudinal discharge opening through its wall and into said intake conduit and a valve connected to and movable with said plunger and controlling said opening, there being a by pass leading from said cylindrical member between the outer ends of said plunger and member, said by pass being connected into said conduit.

5. A mixing device having an intake conduit, a cylindrical member carried by said conduit, and whose outer ends is closed, means reciprocable in the cylindrical member and means in said conduit cooperating with said reciproca'ble means and formed with an air port which enlarges toward said cylindrical member and which is controlled by said reciprocable means, a gas delivery conduit having a. discharge opening in said air intake conduit, a valve movable with said reciprocable means and controlling said opening there being a by pass communicating with the conduit and also comn'iunicating with the cylindrical member between the outer end of said member and the plunger.

6. A mixing device having a full mixture intake conduit, a cylindrical member carried by said conduit and whose outer end is closed, means, having an opening in the conduit, through which gas may be delivered into said conduit, a guide spanning said conduit and having a port, which enlarges toward the cylindrical member, means reciprocable in said cylindrical member and whose position varies in accordance with variations of pressure on opposite sides thereof for controlling said port and ol'icning, said device having a bypass, leading from the outer end of the cylindrical member beyond the outer end of said reciprocable means which enters said conduit.

In testimony whereof I name to this specification.

JOHN L. KLUPPE-L.

have signed my

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