US2774293A - Roof exhauster - Google Patents

Description

Dec..18, 1956 L. J. JENN 2,774,293

00k EXHAUSTER 2 Sheets-Sheet 1 Filed March 27. 1953 INVENTOR.

Lou/5 1. JEN/Y Dec. 18, 1956 J. JENN 2,774,293

ROOF EXHAUSTER Filed March 27, 1953 2 Sheets-Sheet 2 INVENTOR. [0 0/5 J. JEN/Y United States Patent 6 i RooF EmAUsTER Louis J. Jenn, Indianapolis, Ind.

Application March 27, 1953, Serial No. 345,030

8 Claims. (CI. 98-43) This invention relates to a ventilating device and particularly to a device supported on or adjacent the roof of a building for moving air outwardly and upwardly from the inside of the building through said roof. Such venti lating devices are commonly called roof exhausters.

The trend in modern commercial and institutional buildings is toward low rambling one story structures. Many school buildings are now designed without parapets. This type of building makes any superstructures on the roof, such as roof-mounted ventilators very conspicuous and they can spoil the pleasing or clean cut appearance striven for and intended by the architect. There is a problem therefore in keeping the design of such roof exhausters low enough to overcome the above mentioned effect. In many areas of this country the winter snows pile up to a considerable depth on the building roofs. It is therefore necessary to mount said roof exhausters on curbs of sufficient height so that the point of discharge from the same is above the snow level.

It is an object of this invention to provide a roof exhauster having a discharge outlet which is located very close to the top of the unit itself.

It is a further object of this invention to provide a roof exhauster having a motor therein, a fan connected to and driven by said motor, said motor and fan being disposed at a point as low as possible. With such a structure the 1 air discharged is directed up and around said motor to as high a point as possible.

It is also an object of this invention to provide such a device as set forth in the preceding paragraph together with means for directing the discharged air downwardly toward the roof.

It is still another object of the invention to provide such a roof exhauster as above setforth and one with which a centrifugal fan or a fan having an axial type of blade can interchangeably be used therewith.

It is more specifically an object of this invention to provide a roof exhauster having a supporting bracket at its lower end adapted to be secured to the roof or to a curb.

secured to the roof and extending upwardly therefrom, a conduit extending from inside of the building through the roof, an annular member communicating at its lower end with said conduit and extending upwardly and outwardly therefrom, a second annular member supported by said bracket and extending upwardly, a third annular member spaced vertically above said second annular member and forming therewith a passage for air, a motor supported 2,774,293 Patented Dec. 18, 1956 Fig. l is a top plan view of the device of this invention, a small portion thereof being broken away;

Fig. 2 is a central vertical section taken substantially spaced bolts or rivets 14. Member 12 has an'upstanding cylindrical portion 12b of smaller diameter than portion 12a and secured to the latter by a horizontal portion 120. A bracket 16 is provided and secured to member 12. While said bracket 16 could be variously supported, in the embodiment of the invention illustrated, it is shown as secured to the curb 12 and for this purpose the same has a depending cylindrical flange 16a fitting about portion 12b. Portions 16a and 12b are connected by circumferentially spaced bolts or rivets 17. A conduit 18 extends from inside of the building through the roof 10. While conduit 18 could be variously supported, in the embodiment of the invention illustrated it is shown as fitting over a flange 20a of annular member 20 to which it will be connected in any suitable manner, as by rivets or welding. l/lember 20 extends outwardly and upwardly andhas a substantially cylindrical upper portion connected to the upper end of bracket 16 by' circumferentially spaced bolts or rivets 22. A ring 24 having a vertically disposed outer flange and an upwardly and inwardly extending inner flange is connected to portion 20a substantially at the upper'end' of the latter by circumferentially spaced bolts or rivets 23. Said bolts or rivets extend through the verticalflange of ring 24. It will 'be' seen that conduit 18 thus communicates with the lower end of annular member 20. A second annular member 26 is provided, the same having a depending flange surrounding the upper end of annular member 16.v Annular member 16 at said upper end is disposed between the upper end portion of member 20 and the lower portion of annular member 26, and said three members are connected as shown by the bolts or rivets 22. Annular member 26 at its upper end has an outwardly extending horizontal portion 26a having an outer depending edge portion. A third annular member 27 is provided, the same extending upwardly and outwardly and having a substantially horizontal portion 27a, at its outer edge. Portion 27arests upon a number of circumferentially spaced sleeves 28 throughwhich pass headed and nutted bolts 29, said bolts at their lower ends passing through portion 26a beneath which the nuts on said bolts are disposed. Bolts 29 also pass through a'cover member 30 to be later-described. Member 26 thus constitutes a bracket supporting sleeves 28 and members 27 and 30. Member 27 at-its lower portion extends inwardly and horizontally for a short distance and then extends upwardly and inwardly fora short distance, the same terminating in ahorizontal annular flange 27a. A motor 32 is secured to the flange 27a by.-

the bolts 33, said motor having a hubextending downwardly through the opening-in flange 27a and having a ner, as by the key 36. Fan 34 at its lower end has a ringlike portion 34b having an inwardly and downwardly extending'portion which is in substantially'vertical align? ment with the inner flange of ring 24.

The cover member 30 extends upwardly and inwardly to forma dome-like portion and at its upper endhas an A member 11 has a horizontal peripheral It will be seen that the conduit 18, ring 24, annular mem- ;ber'2t), fan 34;and*motor 32'fare ingsnbstantially axial V alignment. Arrneans" foridirectin'g, the discharge d airi V downwardlydbwardthe roof 105' is shown 'as' 30b; and in,

theembcdiment of the inyenti'on illustrated; the same. is.

A cover member cured in any suitablemann'er, as -by:-'welding, to the i flange 54a. An outer cover 62'also of'inverted dish-like j forrnhas-a 11111375811 securedto shaft 50c in' any suitable V manner, as by the set screw 59. Fan 58 is shown as disposed within the lower portion of member 48. V

Cover member 54 extends upwardly and'inwardly in dome-like form and has a central upturned annular flange 54a at its upper end. a A cover'member 6.0 of in H v vertedr dish-like form has a-n outer depending flange se-' form is disp'osedi over cover. member fill-and its outer downwardly. curved p ortion'extendsisome distance. out-, 1

' "wardly' from"member 602 Member 62' is secured to iou'sly fermedfof diiierentmaterilsgin the enibojcli'nient 1 ofthe'in'vention' shown the yfare conveniently formed of sheet-metal? rotateifan 34f. Fan 34 willfdir'ect gajirioutwardly and this air as indicatedby theljarrows in Fig. 2 will pass up wardlyin the passage formed between members 26 and 27." 'Thi's 'air willmovetothernpp er endof 'said passage and"will"then*be defi'ectedfdownwardlyitoward roof' 10,

or connected fan- 34'it: as 19 i it," he-ai d s e V 'aronndfthejmotorfto as h fi d o tr ai' lyl and i ec d wnwar y to r as indicated by the arrows. The air wilfthusl b'e dr'awn' upthrough conduit 1810 and ithroughf the fan and will be forcedTfrorn-thednside of'the' buil ding to the outer side thereof. ltiwillfbe'seen thatthe discharge outlet is g a point as possible and tendsffrom withinj the building "upwardly; through the, V

'rooff 1'0"; Member; 11' h on l vflange nnrx lar 7' portion ll'g similargtO ilangeJIIb. CasingfITihas the 'yertically extending uppe'r; a p

a e. 1211 an "the p e -Y cal. 'fla g'c oh member. 2-?

member 45fillustratfid1as,an annular'inember has tzif vertical'flange of member 12 dithe same issecuredito, D saidilatte 'fi' ntially. Spaced r bolts-01".

, provided: having xtenda I through tlie sleeves A aits -thereen b t nd i ad 'at typeblade 5 lower flanges similarfton s. inwardly}ran l w y i i andfha'sfa itsfnpperendfayef callyflx tendirlgmcylindrical1., fiangeifibj A otherm r 8- v V w y ndiiml fl fittinafibtmt 'flngef b dg connectedjthiereto' by"ciijcumferentially;spaced. bolts149 V Member: 4 8' extendsfupwardly}andoutwardlyvandat'itsg PP? e s a, hor zont y xt ding flange 'rfl m i r 48d, the ont'er' edge portiongoffwhichlis curvedwdown, 1

wardlyg third ann lar; porfiQllv 50 is prtivided, the I same extending' npwardly and; outwardly from-tits inner portion-arid havingla hori ontal flange stliz, atgitsflpper: Qouter en'd. Said-flange '50a rests'1iponj a numberpf c1r l.

. 1 eumferentiallyspaced sleeves;SI-{Whichrest at their'lower ends upon the top-cf flange 48a; Headed and fnuttedi w icy i d c anger45a extend ngl the: pper- The device 1 member'jfitl by a central'headed and"nutted bolt 64. It

will be seen that members 50 and 48'form apassa'gei V therebetwe'en and means for directing the air fromsaid';

passage downwardly is provided. In the embodiment of the ,inventiqn illustrated, said means s lai isi formed fin- In"op;erati.6 motor 5,6j-willbeidriyeniand this. will rotate fanj 581:? Fan SSiWillidifctthe-air outwardly, and. f

upwardly as indicatedbyf-the arrows and said air will be drawnfupwardl'y throu'gh' condnitl44,'i through the fan, andfwill be' 'dijrectedupwardly. throughlthe passage be. tweenflthfernembers 43 Vand'SOZ' It will'then be deflected v downwardly;towardthe'roof 107' byjtheeoutwardly and downwardl'y curb'portion 54a." I v V l It'jfwillfibe seenthatth'etype offa'n shownin Fig. 3 couldalsogbe'nsed inthestructure, shown in Figs. land; 2.: The't'ype of fan shownin Figr2'could also be readily used in the; structure shown .Fig. 3; In certain instal-Q latinlsuth'efiypeof fan shown in- Fig. ,3iwill moye upito I double. the" amount of air moved by. the; type, oflfan."

' 2'? 'such' as, when used lwith'o'lit rdu ct work .s atic, p' r'es snrenapplication 1 1 i i i "From the ab as s'tatedipa'sses upwardly around th efmotor and is then directedvdownwardly towardthereof; /Aivery,lowwandi 1 comp'actfstrncture; is thus produced; In, many applications the use of the curb 12701, 12'fis unnecessa y 1 and members 1'6and"'45,"can be connected fdire'ctliyi-to theftopf o f the roofs lltl or 101" Attention Vcalldllto the fac't" use and is -nowbeing commercially" manufacturedif 'It ill Io'f course ,benunderstoodf"that: various changes may be m'adi in thie form, Vdetails'Qarrangement and "pro;

portions of'the parts without departin'g frornlthe. scope, .ot applicants'iiiyentibmhwhich,generallystated-consists, --in j adeyice capable, of, carrying;out the,olijectsabbve set-'1 7 thjejlrpartsi andj combinations;bf partsdisclose'cb rini helappended claims. claimed f roofiof a building or avgcnrbv extending, upwardlygfrom. V

ove' description itLwillIbeseen that Iihave. 1

proyided ja roofjeghauster gparticularly adapted to be 'i V mjounted'o'n one story structures. The heightofthe f g 'unit'has been kept to a minimum .and the motor and} fan dropp ed to a very jlow-pointi The discha'rged ir" demonstrate-din; I a 7 1".: in aroogfeiil lauster, adapted to be supported by the Combinati0n,;;an annular member 2. In a roof exhauster structure comprising a member supported on said roof and a conduit extending downwardly through said roof, the combination of a bracket secured at its lower end to said member and extending upwardly therefrom, an annular member secured at its upper end to said bracket and extending downwardly and inwardly, secured to and in alinement with said conduit, a second annular member secured at its lower end to the upper end of said bracket and extending upwardly therefrom, a third annular member supported at its upper end by the upper end of said second annular member and extending downwardly and inwardly so as to be spaced inwardly therefrom and forming an annular passage therewith, a motor supported by said third annular member and disposed largely therein and a fan above said conduit driven by said motor and disposed partially within said second annular member and directing air upwardly through said conduit and annular passage.

3. The structure set forth in claim 2, said fan, motor, conduit and third annular member being substantially coaxial.

4. The structure set forth in claim 2, and a member having a flange extending outwardly and downwardly from the upper end of said third annular member at the upper end of said passage for deflecting air from said passage downwardly.

5. In a roof exhauster structure having a member secured to a roof having a vertical opening extending through said roof and a conduit extending vertically and alined with said opening, the combination of a bracket secured to said member and extending upwardly therefrom, a second member secured at its lower end to said conduit and secured at its upper end to said bracket, said second member being annular in form, an annular member secured at its lower end to the upper end of said second member and extending upwardly and outwardly, a second annular member having sides extending upwardly and outwardly, spaced from and partially within the sides of said first mentioned annular member and forming therewith an annular passage through which air from said conduit is directed, said second annular member supported by said first annular member and having a bottom portion, a motor supported on said bottom portion and disposed largely within said second annular member, a fan disposed below and driven by said motor and disposed above said conduit, and a cover above said motor and extending outwardly to the upper end of said second annular member.

6. A roof exhauster to be supported by a roof having in combination, a member secured to a roof having an attachment portion, a bracket secured at its lower end to said portion and extending upwardly and inwardly therefrom, a conduit extending upwardly through said roof, an annular member secured to the upper end portion of said conduit and extending outwardly and upwardly from said conduit and secured at its upper end portion to the upper end portion of said bracket, a second member of inverted frusto-conical form secured at its lower end to the upper end of said annular member and extending upwardly and outwardly therefrom, a second annular member of inverted frusto-conical form thus having upwardly and outwardly flaring sides spaced from the sides of said second member to form a passage through which air from said conduit passes, means for supporting said second annular member, said second annular member having a horizontal bottom portion, a motor supported upon said portion, a fan disposed below said motor and driven thereby to draw air upwardly through said conduit and passage, means at the upper end of said passage for directing air passing therethrough downwardly and a cover for said motor.

7. In a roof exhauster structure including a member supported on said roof and a conduit extending vertically through said roof, the combination of a second member secured to said conduit and extending upwardly and outwardly therefrom, an annular member extending upwardly from said second member and secured thereto at its lower end, a third member of inverted frusto-conical form supported by said annular member and disposed largely therein, the sides thereof forming an annular passage for the passage of air from said conduit, said third member having a bottom portion, a motor supported on said bottom portion and substantially closing the same, a fan below said motor above said conduit and driven thereby for drawing air upwardly through said conduit and annular passage, said annular passage being open to the atmosphere at its upper end.

8. A roof exhauster adapted to be supported by a roof having in combination, a member having an upstanding annular portion, an upwardly extending conduit secured to the lower end of said member, upper and lower spaced members forming an upwardly and outwardly extending annular passage therebetween for receiving air from said conduit, said lower spaced member being supported on said upstanding portion of said member, means for supporting said upper member on said lower member, said upper member having a bottom portion, a motor supported on said bottom portion, a fan disposed below and driven by said motor and being disposed above said conduit, a member forming a cover for said motor overlying said upper spaced member and being secured thereto, and means for directing air from said passage downwardly.

References Cited in the file of this patent UNITED STATES PATENTS 1,889,117 Adamcikas et a1. Nov. 29, 1932 2,322,302 Martinson June 22, 1943 2,526,290 Solzman Oct. 17, 1950 2,571,513 Ammerman Oct. 16, 1951 2,582,902 Gohl Ian. 15, 1952 2,649,040 Knutson et al Aug. 18, 1953

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