US1530645A - Air cleaner - Google Patents

Description

March" 24,1925. 1,530,645

1 yC. P. BROCKWAY AIR CLEANER Fil'dsept. 13, 1920 2 Sheng-sheet 1 ATTORNEY INVENTOR.

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March 24, 1925.

v INVENTOR. Carl I? vBrac'lcwczy WMM ATTORNEY Patented Mar. 24, 19,25.`

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CARL r. BnocxwAY, oF ToLE-Do, oHIo,

ASSIGNO'R, BY -MES-NE ASSIGNMENTS, TO

STROMBERG MOTOR DEVICES COMPANY, 0F CHICAGOJ ILLINOIS, .A CORPORATION 0F ILLINOIS. y

AIR CLEANER.

`Application led September 13, 1920. Serial No. 410,023.

To aZZ whom t may concern;

Be it knownJ that I, CARL P'. BRocKWAY, a citizen of the United' States, residin at Toledo, in the county of Lucas and tate of Ohio, have invented certain new and useful Improvements in Air Cleaners, of which I declare the following to be a full, clear, andexact description.'

This invention relates to improvements in.

air cleaners or purifiers, especially those employed for cleaning air used in internal combustion engines, and has for its object the provision of means for the purpose specified which `shall be economical to manufacture and efiicient in operation.

The principal object of this invention is the ,provision of an air cleaner which has its dust laden air discharged by a pressure reducing means.

Another object is to provide an air cleaner in which thedust is separated by centrifugal force and discharged from the dust box by a separately created blast.

Another object is to combine *the air cleaner with an internal combustion engine in which the blast is obtained from the engine exhaust.

Other objects will appear as I proceed with a detailed description of the particular embodiment of the invention which for the the cleaner and showing it operatively asso-- ciated with a blower.

Figure IV is a section on line 4 4 4of Figure III.

Fi re V is a viewsimilar to Figure III but s owingthe cleaner associated with the induction pipe of the blower.

Figure VI is a section on line 6-6 .of 7

Figure V.'

The air ofl'take pipe through which the clean air leaves the apparatus is indicated by numeral 1. When the cleaner is used in connection with an internal combustion en- Y gine this pipe is attached to the air intake of the carburetor. When the cleaner is used for other purposes this pipe may be attached to any suction creating means, or in case the air to be cleaned is forced through the cleaner rather than drawn through by suction, the pi e 1 may constitute simply a yclean air disc arge pipe. The separating chamber of the cleaner shown is made up of two parallel end pieces 3 joined by a sheet metal element bent into a convolute wall 2 which has spaced overlapping portions 4 and 5 upon the upper side thereof, forming an air inlet 6 to the interior 7 of the separating chamber. ,The oiftake pipe 1 extends from end to end within the chamber 7, the end opposite the `o'utletbeing closed by the endplate 3.v The pipe 1 is provided with a series of perforations 8, preferably on or near its top portion, which serve to allow the clean air to enter pipe 1. The wall 2 is provided With one or more perforations 9 throughout its length in the bot` tom of chamber 7 which serve as a free outlet for the outer skim of dust laden air to separate out by centrifugal force assisted by gravity. The bottom may also beprovided with a series of smaller perforations 10, similar to the perforations 8 above, which serve to allow some of the air which passed out through opening 9 to reenter the chamber 7 after having deposited the greater part of the'suspended dirt particles. A dust box- 11 is rovided extending throughout the length of) under side and enclosing the perforations 9 .and 10. The walls of the dust box 11 are ya rectangular sha ed Venturi tube 13. This Venturi tube is s own in Figure I as constitutingrthe outlet of the exhaust p`pe 14 of an internal combustion englne, not shown.

In the operation of this device, the air is drawn by the suction of the engine into the inlet 6 and is whirled at a high Ivelocit-y in the-narrow passageway between plates 4 and 5 and discharged tangentially into chamber where it continues its rotating motion around the cylinder 1. The outer skim of the rapidly revolving air contains most of the dirt due to centrifugal force acting with greater e'iect on the heavier particles, and

the separating chamber ou its' this outer skim of dust laden air is directed i down into the dust box 11 by the edges of the opening 9. The'cleanest air is of course nearest the center of the Whirl, therefore the air which is drawn by the suction of the engine down through the perforations 8 and on through the oll'take pipe 1, is piactically freed of dust particles. The higli velocity of the exhaust gases from theenf In Figures III and IV, the dust box 11` of the air cleaner is cleaned by the blast from the blower 15 creating a vacuum in the throat of the venturi 13, in much the same way in which the engine exhaust created the vacuum in the arrangement of Figure I.

In Figures V and VI, the outlet 12 of the dust box 11 ,is connected to the induction pipe 16 of a blower 17, and the suction in the blower intake draws' the dlust laden air from box 11 and discharges it through pipe 18.

In the arrangement shown in Figures III to VI the air cleaner may be used to obtain clean air for any purpose and is not limited to a use in connection with an internal combustion engine. It isalso obvious that any pressure producing means or vacuum producing means may be used for. cleaning out the dust box 11 instead of the blowers illustrated in Figures III`and V. i

I/Vhile I have described my invention in detail and as` being embodied in certain forms I do not intend to be limited thereto, a-s it is obvious that the same may be varied without departing from the scope of the in'- 'vention as defined in the appended claims..

I claim as my invention:4 1. An internal combustion enginek in coin- .bination with means for cleaning the'air as the engine 'for delivering air thereto, a settling chamber for the dust, anejector connected with the settling chamber, and means connecting the ejector with the exhaust conduit of the engine for operating the ejector with the engine exhaust gases.

2. An air cleaner for internal combustion engines, comprising, in combination, a cylindrical chamber'with a tangential inlet and a horizontal axial outlet, a peripheral pocket at the lowermost.. portion of the. periphery to collect solid material, and engine ope 'ated means for continuously withdrawing the ac cumulatie-n of material from said pocket by ejector action.

3. An air cleaner comprising, in combination, a cylindrical chamber with a tangential inlet-and an axial out-let, a peripheral pocket to collect solid material, and a ioi'aminatedvbai'le projecting opposite to the direction of rotation part way across said pocket.

4:. An air cleaner comprising, in combination, a cylindrical chamber with a taugenA tial inlet and an axial outlet, a peripheral l pocket to-.collect solid material, and a fo aminated baffle projecting part way across said pocket.

5. An air cleaner, comprising, in combination, a chamber with a tangential inlet and an axial outlet, a` peripheral pocket to collect solid material, and iforaininated baffle means choking eddy currents in said pocket, but permitting passage of solid material to said pocket. l

6. An internal combustion engine in combination with means for cleaning the air as it is drawn into the engine for combustion purposes, and comprising a centrifugal separator connected With the suction intake oi' the engine for delivering air thereto, an ejector connected with the separator, and means connecting theejector with? the exhaust conduit ot' the engine for operating the ejector with the engine exhzust gases.

In testimony' whereof, I affix my sign-.1- ture.

CARL P. BROCKIVAY.

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