US1053156A - Air-circulating system for vacuum-producers. - Google Patents

Description

C. G.' CAMPBELL @L M. BENBROOK.

AIR OIRGULATING SYSTEM POR VACUUM PRODUCERS.

APPL'lOATION FILED AUG. 15, 1912.

Patented. Feb. 1s, 1913.

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C. GQGAMPBELL &, M. BENBROOK.

AIR CIRGULATING'SYSTBM FOR VACUUM PRODUCERS..

APPLICATION FILED AUG. 15, 1912.

Patented Feb..18, 1913.

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CHARLESVG. CAMPBELL AND MONROE BENBROOK, OF MILWAUKEE, VISCONSIN, AS- SIGNORS TO THE CREAMERY PACKAGE MFG.. COMPANY, OF CHICAGO, ILLINOIS.

AIR-CIRCULATING -SYSTEM/ FOB.` VACUUM-PRODUCERS.

Specification. of Letters Patent.

rai-musa Feb. 18,1913.

Application filed Auust 15, 1912. Serial No. 715,155.

To all 107mm it may concern.'

Be it known that. We, CHARLES G. Cani?- BELL and lif'ionuon BENnRooK, both citizens of the United States, and residents of Milwaukee, in the county of ltlilv'aukee and State of lWisconsin, have inventedl cer-tain new and useful lmprovements in Air- Circulating Systems for vi/Yacuum-Producers; and we do hereby declare that the' following is a full, clear, and exact description thereof.

Our invention refers to vacuum producing apparatus especially Vdesigned for use in connection with dust-collecting separators, its object being to provide a simple, economical, effective air-circulating system therefor.

The construct-ion and arrangement'. of our present invention is such that back-pressure is avoided and more uniform distribution of air admit-ted to and exhausted from a suction chamber, which chamber is divided into upper and lower compartments separated by a screen or partition through which the air is adapted' totravel, whereby the maximum suction capacity is obtained by fans of a predetermined capacity relativetfo the expenditurel of power. Another advantage of our novel arrangement of air distributionis that the full area of the chamber screen surface is utilized for separating the'dust from the outgoing filtered air, whereby clogging df the screen at one point is avoided, resulting in an even application of Athe motive force to the fan elements, the apparatus as herein fully dcscribed with reference to the accompanying drawings and claimed, being particularly applicable to suchdevices as disclosed in an application for patent for improvements in vacuum-cleaner apparatus, tiled by us March 8, 1912', Serial Number (382,362.

.In the drawings Figure 1 represents an elevation of an apparatus embodying the features of cur invention with parts broken away and parts in section as indicated by line 1-1 of Figs. 2 and 3; Fig. 2, a plan view of the same, and Fig. 3, a sectional elevation of the apparatus, the section being indicated by lines 3-3 of Figs. l 'and 2.

lReferring by characters to the drawings, 1 represents a suction chambel1 provided with a cover-plate 2 that constitutes a supporting bed for a vacuum producer mechapair of alined' fancasings 3, of the snail type, havingfans 3 therein, which lfans are mounted directly i upon the opposite ends of a shaft 4 that car" ries the armature of an electric motor 5, the

motorbcing secured to the cover-plate 2 intermediate of said fan casings, through an interposed bracket. The suction cham er 1 is divided into upper and lower compartments tl and 7 respectively by a screen-cloth partition-wall 8 that is located just below the cover-plate and parallel thereto. The lower compartment 'Tof the suction-chamber l is provided with the usual removable dust-receiving tray 9, all o-f which specific chamber' elements form no partof our prescntinvention, except so far as they cooperate to accomplish the desired result in a circulating system of the character herein described. I

The cover-plate 2 is provided with opposi tely disposed end suction ports 2 that communicate with the upper chamber compart ment (l, the ports being adjacent to the end's of said compartment. Each port is connect-- ed to a suction mouth l0 of a juxtaposed fancasine by a hollow leg 11. The fan casings are a so provided with the usual peripheral discharge leg 12, which legs in turn are conlnected to oppositely extended branch tubes 12', 12', of a common main exhaust pipe 13 that is open to atmosphere. The cover-plate 2 is also provided with a pair of oppositely disposed and transversely arranged apertures 14C, through which apertures are fitted branch suction tubes 15 that connectto a common suction or stand-pipe 16, the same being provided with a plurality of nipples 16 for attachment to suction nozzles, not shown. tubes l5 extend through the upper compartment G of the suction chamber and also through suitable apertures in the screen partition 8 having their mouths in communication with the lower compartment. of said suction-chamber, whereby dust-laden .airdelircred from the suction tubes lfis trapped therein. Y

From the foregoing description it. will be secu that air is admitted at two points to the lower compartment of the suction chamber and. centrally thereof, the points of air admission being adjacent to the side walls of The ends of the branch suction.

the chan'iben while thtl exhaust from the v screen. Hence it is apparent that the dustfiltered.

laden currents of air from the suctionmout-hs of the tubes will be drawn over .the under sideof the screen 8 in opposite directions, the air being thus broken u'p into thindiverging sheets coincident to its travel as it rises upward through the screen and is This ltered air is thereafter drawn 01T from'the upper compartment of the suction chamber at its opposite ends,l

whereby the opposing cross-currents ot air 'caused through the positioning of the various ports tends to more evenly distribute said air, which distribution will thus cause the 4entire screen surface to be utilized as a dust and air separating medium, whereas under the usual conditions all of the air is directed to a small area of the screen surface, thus choking the same, whereby not only the efficiency of the separator or suc-v tion chamber is impaired, but the suction or pulling power of the air is unduly loaded,

due to back pressure or choking of the air currents.

With our arrangement of air` circulation the above mentioned objectionable features are overcome and the apparatus, as practically demonstrated, shows `an increased suction capacity rela-tive to th'e motive force employed and also great eliciency in separation due to the fact of the position of the various suction and exhaust ports in the chamber and the proportion of the various pipes or channels 'comprising the circula-ting system, whereby a free and even circulation of air s obtained, to thus prevent fluctuations in the load that is applied to a motor of a predetermined capacity.

We claim: Y, l`

In va 'circulating system for vacuum producers; the combination of a suction chamber having a division screen therein, an eX- haust pipe having branches in communication with opposite ends of thechambcr above the screen, a vacuum producer interposed in each branch pipe, and an air 'discharge stand-pipe having branches that communi-A CHARLES G. CAMPBELL. MONROE BENBROOK.

Witnesses GEO. W. YOUNG, M. E. DowNEY.

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