US1877888A - Air cleaner - Google Patents

Description

Sept. 20, 1932. E. A. RElcl-IERT ET AL AIR CLEANER Filed sept. 25, 1.929

I l l l I Patented Sept. 20, 19321 UNiTED STATES ERWD REICHERT AND WILLIAM S. HOLZINGER, OF HIGHLAND, ILLINOIS AIR CLEANER Application led September 23, 1929. Serial No. 894,540.

vThis invention relates to improvements in air cleaners of the character used in cleaning or straining the intaken air to the carburetor or intake manifold of an internal combustion motor, the invention having for its primary object to provide a device for acting on the air at dierent stages of its travel.

Another object of the invention is in providing an air cleaner for an internal combustion motor in which means are provided for catching and retaining the larger foreign particles in the indrawn air and subsequently acting on the indrawn air for separating the smaller foreign particles.

A further object of the invention is in providing an air cleaning device having a Huid body against which the indrawn air is entrained and having a saturated porous body through which the air is finally entrained.

A still further object of the invention is in providing an improved air cleaning device which is demountably connected to an internal combustion motor for cleaning purposes.

Other and further objects will appear in the specic'ation and be specifically pointed out inthe appended claims, reference being had to the accompanying drawing, exemplifying the invention, and in which Figure 1 is a side elevation of this improved 30 air cleaner showing it secured to the dash or front board ofn an automobile and connected to the carburetor of an internal combustion motor.

Figure 2 is a plan view of Fig. 1.

Figure 3 is an enlarged transverse vertical section taken approximately on the line III- HI of Fig. 1.

Figure 4 is an enlarged horizontal section taken approximately on the line IV-IV of Fi .3.

eferring by numerals to the accompanying drawing 1 designates a fragmentary portion of an internal combustion motor having the intake manifold 2 and the exhaust manifold 3 and in communication with the intake manifold 2 is a carburetor 4 and extending upwardly from the carburetor is an air intake pipe 5 which is connected to the discharge so pipe 6 of an air cleaner 7 by a connecting member or union 8.

The air cleaner 7 is secured to the front bo ard.9 of an automobile by the straps 10, said air cleaner having top and bottom members 11 and 12 and secured intermediate thereto is'a cylindrical body 13, the straps 10 encircling the cylindrical body 13.

The bottom member 12 is provided with an annular side wall 14; and extending upwardly from the bottom of said member is an inclosure 15 of coarse wire mesh material and mounted in the side wall 14 is a removable annular member 16 having an annular shaped horizontal portion 17 and depending from said horizontal portionis a neck portion 18 which encircles the. upper portion of the inclosure 15.

The cylindrical body 13is provided with a reduced portion 19 at its lower end for inserting engagement within the annular member 16, and secured to the inner surface of the cylindrical body 13 is a depending funnel 20, the lower constricted end of said funnel being disposed above and adjacent the top of the inclosure 15, the constricted end of said funnel being smaller in diameter than theneck 18 of the annular member.

Formed in the cylindrical body 13 on one side and adjacent the funnel 20, is a series of horizontally disposed openings 21 having a screen 22 mounted thereover, and transversely disposed across the upper end of the funnel 2O is a screen layer 23, and disposed within the, cylindrical body 13 and resting on the screen layer 23 is a body of mineral wool 24 of approximately number fourteen size and disposed above the mineral body is a screen pressure layer 25 which is adapted to frictionally engage the inner periphery of the cylindrical body 13 for holding the mineral wool in a somewhat packed condition.

Secured against the cylindrical body 13 over the openings 21 is an enclosing fitting 26 having a connecting branch 27, said branch being for securing one end of a flexible nietallic hose 28. The hose 28 is relatively short in length and is connected at its opposite end with a branch 29 of a bifuicated fitting 30, the jaws 31 of said fitting 30 overengaging the exhaust manifold 3 and being secured in this position by the set screws 32.

' extendin In mounting this improved air cleaner together, the bottom member 12 having the annular side wall 14 is filled with motor oil to the approximate height of the wire mesh inclosure 15 and the annular member 16 is then inserted in the annular wall 14 of the bottom member 12. The cylindrical body portion. 13 is then connected to the bottom member 12 by inserting the reduced portion 19 thereof into the annular member 16, and as the funnel 20 is secured in the cylindrical body 13, the lower constricted end of the funnel will be disposed a distance above and concentric with the inclosure 15.

After the cylindrical body 13 has been mounted on the bottom member 12, the body of mineral wool 24 which lhas been previously saturated in motor oil is mounted in the cylindrical body upon the screen layer 23 and the holding down screen la er 25 is then mounted in the cylindrical bo y 13 against the mineral l`wool body. The top member 11 is then secured to the upper end of the c lindrical body 13, the top member having the air discharge pipe 6 secured thereto which is coupled with the air intake pipe 5 which leads to the carburetor 4. The top and bottom members 11 and 12 of the cylindrical body 13 are each provided with a transversely disposed flat strip 33 each strlp at 1ts ends extending be ond the width of the top and bottom members and passing through the ends of said strips are securing rods 34 or holding the bottom member 12, top member 11 and cylindrical body 13 together.

After this improved air cleaner has been mounted together and coupled with the carburetor of an internal combustion motor as shown and described, and the motor is placed in operation, the intaking strokes of the piston of respective cylinders of the motor will create a suction through the carburetor 4, through the pipes 5l and 6 and upwardly through the air cleaner 7 from the fitting 30 which is engaged over the manifold 3 of the motor. This indrawing of the air to the carburetor is first introduced into the air cleaner 7 from adjacent the heated exhaust pipe 3 into the fitting 30 by Areason of said tting being secured over the exhaust pipe, the heated air after passing throu h said fitting entering the iiexible metallic ose 28, the fitting 26 and through the, openings 21 which are formed in the cylindrical body 13, and as the heated air currents enter the cylindrical body, they will be defiected downwardly by engaging the outer wall of the funnel 2O and will be directed on the oil body 35 whichv is exposed in the neck 18 of the annular member 16 of the bottom member 12. The air upon striking the oil body will cause the heavier dirt particles which have been indrawn with the air to engage the oil body and consequently will be held thereby, the air upon striking the oil body being drawn upwardly concentrically through the constricted lower end of the funnel 20 and will pass through the screen 23 into the oil saturated body of mineral wool 24, the smaller or finer dust particles which are still in the upwardly travelling air body being retained by the saturated mineral wool and consequently the entrained air upon reaching the upper end of the cylindrical bod 13 will have been purified or cleaned rea y for discharge into the pipe 6 and subsequently to the carburetor.

As this im roved air cleaner is constructed of .demounta le parts, it is obvious that it can be quiekl a new body o oil can be mounted in the botdemounted and cleaned and tom member 12 and the mineral wool ,body

24 can be removed and cleaned and resaturatedl with oil." v

Obviously the entraining of the air from the proximity of the exhaust pipe ,or` manifold 3, will provide for heated air being entrained into the air cleaning device for the purpose of creating a better combusting fuel in the motor.

During the summer months if desired, the connection to the exhaust manifold can be dispensed with so that cooler air may be enn means for entraining the air currents to an away from the liquid body 35, but also serves the purpose of providing a trap for cutting off air entrainment through the air cleaning device when a too great accumulation of dirt has accrued in the oil body 35. This cutting off of the air is brought about by the accumulated foreign matter or dirt in the oil body 35, causing the oil to rise so that the reduced end 36 of the funnel 20 will be closed by the raised oil body. This choking or cutting off of the air through the cleaner will cause a faulty motor operation which will `be a. warning to the operator of the automobile that the air cleaner should be dismantled and cleaned of its accumulated dirt content.

The wire mesh inclosure 15 provides a bafiiing element in the oil body 35 for steadyend adapted to contain a fluid, a baille late forming a top wall to said compartment av-v ing an opening therein, a funnel in said container above said compartment having its reduced end disposed adjacent the opening of said bailie plate, an air inlet opening formed 'in said container in communication with the outside of said funnel, a saturated porous body material disposed above said funnel in said container, and outlet means leading from said container above said saturated porous body material.

2. An air cleaner comrisin a container having a compartment a apte to contain a fluid, a baiiie plate having an intermediately disposed opening forming a top wall to said compartment, a funnel in said container above said' com artment having its reduced end disposed a jacent the opening of said balile plate and in alinement with the opeiing, an air inlet opening formed in said container inpcommumcation with the outside of

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