US2342447A - Dust separator - Google Patents

Description

Feb- 22, 194 D. L. BENNETT ET AL DUST SEPARATOR Filed Feb. 16, 1942 Patented Feb. 22, 1944 DUST SEPARATOB.

Dale L. Bennett, Riverside, and Alex J. McAllister, Chicago, 111., on to United Specialties Company, Chicago, 111., a corporation of Dela- Application February 16, 1942, Serial No. 431,112

2 Claims.

This invention relates to a cleaner, and particularly to a cleaner adapted to remove impurities from air and other gases. It has for one object to provide a simple and eiiective mechanism for accomplishing the purpose mentioned.

Another object is to provide a cleaner of simple construction in which the inlet and outlet passages are combined in a single simple structure which is in eilect the cover for the remaining mechanism.

Another object is to provide such a cover as a unitary assembly shaped to include the full inlet and outlet passages.

Another object is to provide a simple cover means for an oil bath air or gas cleaner.

Other objects will appear from time to time throughout the specification and claims.

This invention is illustrated more or less diagrammatically in the accompanying drawing, wherein:

Figure 1 is a vertical, sectional view of one form of the device.

Figure 2 is a transverse section taken at line 2--2 of Figure 1.

Figure 3 is a plan view of the cleaner, taken from the upper end.

Figure 4 is a partial vertical section illustrating a modified form.

Figure 5 is a iragmentary elevation illustrating the lock of Figure 4.

Like parts are indicated by like characters throughout the specification and the drawing.

The cleaner is usually made of sheet metal' for example. sheet steel-but it may be made of any other metal, and it may be made of materials other than metal. As shown, the cleaner includes an outer shell or wall i. Adjacent its lower edge a ring-like member 2 is secured to the wall i by soldering, welding, or otherwise. This ring has a laterally turned portion 3 and a downwardly turned flange 4. Packing material 5 may be positioned within the space below the member 3. A pair of ears 8, 6 is positioned in a ring-like member I which is positioned adjacent the lower end of the wall I and which may be against the upper surface of the member 3. This ring may or may not be permanently positioned, as desired. A bail 8 is mounted in the perforated ears 5 and arranged for swinging. It may have spring loops 9, 9 formed in it, and may also carry a roller or anti-friction member I 0.

A cup member H is arranged to be removably positioned at or about the lower end.0f the wall member I. As shown, the cup is provided with a rounded bottom portion l2 within which a depression I! may be formed to receive the roller ill or some equivalent member. Adjacent its upper end or edge the cup may be provided with a rolled portion H which contacts the packing 5, if any packing is present. The upper edge or the cup I I may be of any desired form. It is preferably so arranged that it has a somewhat extended area of contact with or against the packing or against the under surface of the member 3 in case no packing is present.

The cup Ii is provided with an outwardly extending head or depression l5 and with an adjacent, inwardly extending member l6 which forms on its upper surface a. shoulder ll. Upon this shoulder is positioned a bailie supporting member i8. This baille support may be held in place within the space provided by the bead 5 and against the shoulder I! by a ring l9. The ring is crowded in this space and holds the support member 18. The ring may be sprung into place removably or may be held permanently in place,

and obviously many other sorts of means may be used for holding the baflle support l8 against dis-= placement.

Secured to the support it is a baffle member 20. As shown, this member contacts the support It by a number of feet 28:; positioned away from the inner edge 2! of the support, and thus the inner edge 2| comprises in itself a baffling member, and there is a clearance between the upper edge of the member-'26 and the under surface of the support i8. The baille 26 is provided with a raised central portion 22 and is provided with a plurality of downwardly bent portions 23 which provide or form passages 24. A member 25 may be secured to the baflle 20 beneath the raised central portion 22.

Positioned symmetrically and centrally with relation to the outer wall I is an inner wall and passage member 21. At or adjacent its lower end, this member is secured to and supported from the outer wall member by a spider 28 which is provided with an outer annular portion 29 which is secured to the ring 2. It is provided with an inner annular portion 30 which might be secured to the inlet passage 21, but in the particular form of this invention here shown it is secured to the cylindrical portion 3| of a baffle 32 which as shown is provided with an upwardly curved terminal portion 33. Obviously the battle structure including the members 3|, 32, and 33 could be made unitary with the central tubular portion 21.

Adjacent its upper end the tube 21 has secured exteriorly an annular portion 34 of a downwardly the outer wall member I.

is provided with a downwardly bent annular facing and downwardly curved home 35. This baiile also serves to limit and position an annular member 38 which is perforated or formed of mesh material and which prevents upward displacement of the filtering material 31, which as shown substantially fills the space defined by the wall I and the tube 21 and lies above the spider 28 and below the member 38. This material may be of almost any desired nature. One suitable material is metal wool, or other finely divided metal, and while copper is suitable for this purpose, many other metals and many non-metallic filtering materials may be used without departing from the spirit of the invention.

At its upper end the central tube 21 is cut oiT diagonally, as indicated at 38, so that one side is of greater length than the opposite side. Secured at or near the upper end is the annular portion 39 of a closing member 40. This member is inclined, as shown, and the portion 40 is joined to the portion 39 by a curved portion 4|, the curvature of which varies as shown. The portion 40 serves as a closure or cover for the upper end of the annular space defined between the outer wall I and the central inlet passage member 21, and it is provided with an upturned flange 40a which is secured to the inner face of the outer wall I by welding, soldering, or otherwise. Preferably on the side of the cleaner to which the member 40 is closest to the top of the assembly, an outlet passage member 42 is secured in place. As shown it is secured to an outwardly bent portion 43 of the side wall I. On the opposite side, where the member 40 is at its lowest point, an inlet passage connection member 44 is secured to an outwardly bent portion 45 of A cover member 46 flange 47 by means of'which it is secured to the upper end of the wall member I. While the outlet passage connecting member 42 and the inlet passage connecting member 44 are shown as diametrically opposite to each other, it is to be understood that they need not be so arranged. It is ordinarily convenient to have each of these members secured to that portion of the housing which provides the most space for it, and thus it is convenient to have the inlet passage opposite the lowest edge of the member 40, and it is convenient to have the outlet passage member connected opposite the highest edge ber 40, but the invention is not limited' to this exact arrangement.

The member 40 has been shown and described as being generally fiat except for the perforation of the curved portion 4|. It need not, however, be flat, and it can be of almost any shape so long as it provides a cover for the annular space defined by the members I and 21, and so long as it does not make the attachment of the members 42 and 44 inconvenient or impossible. might be flat, as shown, or curved, or might have flat portions and curved portions.

While the device of this invention may be held in place in any desired manner, it is convenient to provide a bracket, and the member 48 is such a bracket member. As shown it is secured to the outer wall of the housing at any desired location, and is provided with two laterally extending members or portions 48 and 50, which are suitably shaped to receive some attaching means. Thus notches are provided. Of course perforations might be substituted for the notches, and the invention is in no way limited to the use of the bracket nor to any particular type of bracket. That which is shown is merely one convenient bracket form.

In the modified form of Figures 4 and 5 the part are substantially the same as those described in connection with Figures 1, 2, and 3. The main change is the provision of the bayonet lock mechanism and the associated parts. Thus there is secured to the ring-like portion 30, which forms a part of the-spider assembly, one or more pins 52 which are adapted to extend through and engage bayonet slots 53 which are formed in the tube or passage member 21. An extension 54 is secured to the generally cylindrical member 3|, which may be attached to or formed as a part of the baiile 32, and this extension is provided with an offset or outwardly flared portion 55.

The use and operation of the invention are as follows:

member 44 and pass downtube 21. It will then be carcollect in the cup so that gradually during use the oil becomes more or less filled with impurities.

When it is necessary to clean the oil, the bail is moved from the position shown to a position in which it no longer holds the cup in place. The cup is then removed and the oil is discharged for cleaning or replacement. As the baflie assembly is mounted in the cup it goes with the cup, and it it is necessary to remove the baiiie assembly from the cup, that is done by removing the ring I! which then permits the carrier i8 to be withdrawn and with it, the baflle 20. When the cup and baffle are removed, the spider 28 which supports the filter material 31 may or may not be removed with it. Thus the spider ring 29 may be permanently secured to the cup ll so that it moves with it or it may not. If it is permanently secured to the cup, then when the cup is removed the spider and the bailie 32, 33 come with it. In the form shown in Figure 1 on special arrangement is made at the end of the inlet tube 21 for engagement with the baflle ring 3| or the spider ring 30 or any of the parts adjacent this end of the device, and they may either iit together with a friction fit or be permanently secured in any desired manner. In the form of Figure 4, however, the structure differs, and the baflle is secured to the spider ring and the latter carries one or more pins which engage in suitable notches formed in the bottom of the tube 21, and thus when that part of the device is to be removed from the tube, it is given a slight turn to move the pins into the position in which they can be readily i'reed from or withdrawn from the slots or notches. Also in the form of Figure 4, when the assembly is moved into the position shown in that figure the filter material may be somewhat raised, as shown, and the edge of the spider ring which is 'flared away from the tube 2'! is eirective to prevent clogging or catching or the filter material which might otherwise interfere with the insertion or re-insertion oi the device. The modified construction oi! Figure 4 is therefore an alternate tom and one which possibly makes the assembly and re-assembly oi the devlce simpler and less likely to interlerence from the filter material'than. does the form of Figure 1. Both forms, however, are advantageous.

I claim:

1. In combination in an air cleaner, a housing and an inlet passage member positioned within said housing, and forming with said housing an air passage, a cover completely closing the upper end of said housing and in continuous contact therewith, a partition within said housing, an inlet opening in the wall of said housing above the point of contact of said partition with said housing wall, and an outlet opening in the wall of said housing below the point of contact of the partition with the housing wall, and a cup-like member removably closing the bottom of said housing, and a member positioned to move with said cup and including an annular part positioned to contact said inlet passage member, said annular part being flared outwardly adjacent its upper end, and removable latch means positioned partly on said outlet passage member and partly on said annular member, and adapted to secure the two removably together.

2. In combination in an air cleaner, a housing and an inlet passage member positioned within said housing, and forming with said housing an air passage, a cover completely closing one end of said housing, the periphery of said partition being in continuous contact with said housing, a partition within said housing, an inlet opening in the wall of said housing above the point of contact of said partition with said housing wall, and an outlet opening in the wall of said housing below the point of contact of the partition with the housing wall, said two openings lying generally within the same planes, and a cup-like member removably closing the bottom of said housing, and a member positioned to move with said cup and including an annular part positioned to contact said inlet passage member, said annular member being flared outwardly adjacent its upper end, and bayonet lock means positioned partly on said inlet passage member and partly on said annular member, adapted to secure the two removably together.

DALE L. BENNE'I'I. ALEX J. MOAI-LIBTER.

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