US1665434A

US1665434A - Air cleaner for carburetors

Info

Publication number: US1665434A
Application number: US37766A
Authority: US
Inventors: Ashley C Bennett
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-06-17
Filing date: 1925-06-17
Publication date: 1928-04-10
Anticipated expiration: 1945-04-10

Description

Apt- 110, 192s.

1,665,434 A. c. BENNETT AIR CLEANER FOR CARBURETORS Filed June 17, 1925 C Bennett M WW I n ven for:

Patented Apr. 10, 19 28.

UNITED STATES PATENT OFFICE.

AIR CLEANER FOR CARBURETORS.

Application filed June 17, 1925.

My invention relates to air cleaners for carburetors, particularly to such air cleaners as may be applied to the carburetor of a gas engine of motor vehicles, as, automobiles or tractors.

It is an object of my invention to provide an air cleaner of exceedingly simple construction which will be cheap to make, easy to instal, easily taken care of and which will have a high degree of efiiciency.

The principal object of my invention is to provide an air cleaner having a cylindrical casing adapted to be mounted with the cylinder horizontal providing a tangential air inlet adapted to cause the air to move rapidly around the inner wall of the casing, and providing an air outlet entering the side of said cylindrical casing at a point removed from the center of said casing whereby the air circulating chamber is eccentric with reference to the air exit.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and the novel features of the invention are more fully and particularly pointed out in the annexed claims.

In the drawings illustrating an application of my invention in one form,

Fig. 1 is a side elevation view of my air cleaner in operative position. Fig. 2 is a central sectional elevation view of the cleaner in the. same position as in Fig. 1, or on line 22 of Fig. 3. Fig. 3 is a sectional elevation at right angles to the-view shown in Fig. 2 or on the line 3-3 of Fig. 2.

My cleaner comprises a casing formed of a cylindrical member 10 and front and rear walls 11, 12 which provides a closed chamber excepting for the opening hereinafter referred to. An air inlet pipe 13 extends'tangentially from the casing member, as clearly shown in Figs. 1 and 2. A cylindrical portion of the casing member is provided with an inturned lip 14 inside and adjacent theinlet pipe 13 which projects to a point near the top of the cylindrical casing member so as to leave an inlet opening 15 into the same.

The cylindrical casing member 10 is provided with an overlap indicated at 16 of Figs. 2 and 3 which overlap provides a tangential' slit-like opening 17 into a cup extension 18 secured to the lower central ortion of the cylinder member 10 and provided with threads 19 into'which a glass jar or other receptacle 20, having a threaded neck for example,

Serial No. 37,766.

21, is screwed so as to form an airtight junction with said extension 18.

An outlet pipe 22 extends through a flanged opening 23 in the front 11 of the cleaner at a point outside of the center of the cylinder 10, preferably along the vertical axis thereof, and so positioned as to come just below the lower limit of the air inlet opening 15. The pipe 22 is cut away'for half its circumference, as clearly shown at 24' in Figs. 2 and 3, the half opening being preferably turned so that its diametrical chord is somewhat angularly disposed in reference to the vertical diameter of the cylinder as clearly shown in Fig. 2.

In operation the pipe 22 is connected with the inlet pipe of a carburetor. The suction induced by the operation of the gas engine causes air to enter the cylindrical which air is greatly speeded up because of casing 10,

the restricted inlet opening at 15 and is caused to move along the inner wall of the cylinder 10. air are thrown against said wall by the combined action of the upward deflection of the lip 14, the centrifugal action of the whirling Particles of dirt carried in the current of air and the action of gravity as I the particles near the opening 17. These particles pass through the opening into the dead air space 25 within the receptacle 20, where the dust settles and is separated from the air, which passes upwardly to the pipe 22 and enters it through the opening 24 and passes through it to the carburetor.

The outlet pipe 22,

positioned as herein described, has three advantages of great importance in effecting dust separation. First, the upper portion 26 of the half of said pipe in the cylindrical casing comprises a deflector and a guide member for the incoming air passing above it. Second, because of the relatively large distance between the lower edge of said pipe as indicated at 27 and the lower part of the cylindrical casing 10, the air is carried around to the opening 24 in a relatively broad sweep and enters freely the half cylinder behind 24, so that the net ef feet is to greatly reduce the restricting ac tion which takes place when the outlet pipe is at the center of the cylindrical casing, wherein the air is caused to make much shorter turns, with the result of requiring more power to move the same volume of air through at the same speed. Third, because of the wide movement of the air along the effective cleaning portion of the inside of lot the cylinder, indicated at 28, the relative speed of the air at this critical point in the cleaner is greatly increased thereby, increasing the centrifugal action, which tends to throw the particles of dirt against the inner cylindrical wall and hence through the opening 17 into the settling dead air chamber 25. Stated another way, if there were merely a central outlet opening by which the air was drawn from the cylinder casing 10 and through the inlet pipe 13, there would immediately be a twisting pull upon that air tending to draw it away from the wall of the cylinder and toward the central outlet opening. With the construction herein shown the air moving along the inner wall of the cylinder 10 is not affected by the pull toward the discharge opening until it is substantially past the dust discharge opening 17, thus permittingathe incoming stream of air to move in a comparatively thin film along the inner casing wall to and past the dust discharge 17 after which it is pulled in from the casing wall to the opening 24 and the discharge pipe 22.

I claim:

1. An air cleaner comprising a cylindrical casing member adapted to be positioned with its axis horizontal and having its ends closed, an air inlet arranged tangentially with relation to the'cylinder wall, a dustdischarge passage at the lower portion of the cylinder -wall, and an air outlet pipe extending through one of the end walls of the cylinder, said outlet pipe extending across the cylinder and having a portion of its wall removed toward the side of the cylindrical casing through which said air inlet passes.

2. An air cleaner comprising a cylindrical casing member adaptedto be positioned with its axis horizontal and having its ends closed, an air inlet 0 ening arranged tangentially at the top 0 the cylinder, a dust ischarge opening at the bottom of the cylindrical wall, and an air outlet pipe extending through an end of the wall of the cylinder outside of the center of said cylinder, said outlet pipe extending across the cylinder and being cut away along one wall.

with and at the 3. An air cleaner comprising a cylindrical casing member adapted to be positioned with its axis horizontal. and having its ends closed, an air inlet-opening arranged tangentially at the top of the cylinder, a dust discharge opening at the bottom of the cylindrical wall, and an air outlet pipe extending through an end wall of the cylinder outside of the center of said cylinder, said outlet pipe extending across the cylinder and being cut away along the wall toward the side of the cylindrical casing through which the inlet opening extends.

4;. An air cleaner comprising a cylinder casing member adapted to be positioned with its axis horizontal and having its ends closed, an air inlet pipe united tangentially top of said cylinder, a lip comprising a portion of the cylinder wall blocking part of said inlet pipe and form ing therewith a tangential opening at the top 0 the cylinder, a dust discharge opening at the ottom of the cylinder, and an air outlet pipe extending through an end wall of the cylinder at a point on the vertical axis and above the center of said cylinder.

5. An air cleaner comprising a cylinder casing member ada ted to be positioned with its axis horizonta and having its ends closed, an air inlet pipe united tangentially with and at the top of'said cylinder, a lip comprising a portion of the cylinder wall blocking part of said inlet pipe and forming therewlth a tangential opening at the to at the bottom of. the cylinder, and an air outlet pipe extending through an end wall of the cylinder at a point on the vertical axis and above the center of said cylinder, said outlet pipe extending across the chamber formed by the cylinder and its end walls and being half cutaway within the cylinder along a diametrical line tipped angularly from the axis of the cylinder towards said inlet opening.

In testimony whereof Ihereunto afiix my signature.

' ASHLEY o. BENNETT.

of the cylinder, a dustdischarge opening