US2474611A - Mounting of fan units in ventilating shafts - Google Patents

Description

June 28, 1949. "r. WYLIE MOUNTING OF FAN UNITS IN VENTILATING SHAFTS 2 Sheets-Sheet 1 Filed 001;. 21, 1946 Inventor Arrorhey Fizz-7,2

III.

June28, 1949. T. WYLIE 2,474,611

MOUNTING OF FAN UNITS IN VENTILATING SHAFTS Z 548% v Attorney Patented June 28, 1949 MQUNTINGALUNITS IN VENTILATING SHAFTS f";

Thomas li ;,Twiekenham;:Engiaiifl Applicatiomflctober'21; 1946,-aSerial N01. 104M81 In :Great Britain April T23,x- ;191&gp

6 Claim-S. ,(Cl. 230%;4 2) I This .invention.,irelates; to ventilating systems. and. more "particularly but- ;notexclusively-to the mounting. of :ventilating ,fan, units tin ventilating,

shaftsiontmarine ,ivesselsa It is anmobjecttoftheihvention to provide ant improved ventilating, system-- ,whereby .a ventilat-= ing fan unit mountediin a ventilating shaftmaybe rendered morelreadilylaceessible,for repairsor otherwise, thanshas; hitherto beenlther case. t lt is a further object of then-invention to provider an improved ventilating system, wherein the position e l of the ,ventilating fan may be readily reversed to "reverse the direotionwf air flow" produced by thefane According tp-theimention there is provided a ventilating systemn,eomprisingta ventilating I; shaft containing ventilating; fantunit wherein, a theulfaniunitis carriedbyl-a portion-"of said shaft; Which is pivotallymounted between theadjac ent.-

portions thereofeabout a central transverse axis so that said intermediate portion may be turned out of line with-spaidgadiauentzportions to render the fan unit accessible, and turned through,180.?u to *reve-rse the-direction "of air fiowsproducedpby the fan if desired.

The invention is illustrated by wayef example in the accompanying drawings, in which- Figure "1 is a part sectional side elevationiof a ventilating. system comprisingya ventilating fan unit-andwa ventilatingshaft according to the invention;

FigureZ is a sectional plan viewjtakenionfthea linei2 2 of Figure 1;

Figure-3 is a sectional sideelevation taken at right angles to Figuneljl; ShOWiEDgith intermediate p rti f the ve i at ngtshaft-din two different positions; and

Figure 4 is a perspective view' of a ships ventilator incorporating a ventilating system according to the invention.

In the particular construction shown in the drawings, a vertical ventilating shaft generally indicated at I0 which may be of circular cross section, is formed in three portions, an upper portion I I, an intermediate or middle portion I2 and a lower portion I3. The middle portion [2 is pivotally mounted between the upper and lower portions II and I3 respectively so that the said middle portion may be turned out of its normal vertical position, in which itis in line with the upper and lower portions, into a position in which it is at right angles to said upper and lower portions.

The middle portion l2 of the ventilating shaft I0 is mounted so that it can be pivoted as indieach sideLnlateil-A X1 eachgpin; 21 tieing bolte 2 as A4,-

tedabove, tbytmeausiinelusiins' two rectan ular side plates tl game l 5 iizvhichsare of somewhat. ereaterheie t tha itheie ietkrof themiddle P tioniof 1tha.shattandial'etSp cedapart in parallel, relationship at adista ice somewhat erea rr thenoutside Qdiarhetemof saidturhiddle portion of the shaitiit'lhe iupper; and lgwzer endsof theside i plates! tareaconneqiiedthyhgt ntrallylapertured top and. ibottomaplatesfllfi and-,1] respectively, the upper and lower portionspi the;shaft.,proj.ecting respectively thnougn thei apertures in isaidtplat'es l La dfill and,;beine,useq.uned.thereimin sp c relationship;forexamplenby Weldin or l y-m The middleiportioneli .of ithlventilatin shaft which is slightly'shorter in length than the dis-i tance between the upper and lower portions all andi 1.3 iespectiyely gf the-shaft .iS 'pivotally tweeniithe idfiinlatle p rtiomlo theiyeritilatin en atedfl r; v. i ventilating shaft= of t e idd etorti portions ll and"l3 respectively of said shaft are normally each closed by a sealing band generally indicated at 2'! comprising two semi-cylindrical parts 28 and 29 with outwardly projecting end lugs 30 and 3| adapted to receive a fastening bolt 32. For this purpose the fastening bolt 32 may be pivoted to one end lug 3| of each pair of adjacent lugs, the other lug 30 of each pair being slotted for cooperation with said bolt 32 when the latter is in a substantially tangential position with respect to the sealing band 21, the bolt being secured in this position by means of a nut 33. The bands 21 may be located in position by pads IS on the shaft In as shown.

The ventilating fan unit may comprise a ventilating fan 34 and an electric motor 35 for rotating the fan, the motor casing having supl4 andyliitrorthis purpose i. is nroyidedwith a: hollow flaneedit srum iiiior stut.islnaftieem:mli iindir l a ed-ia e 1 iw i li ;h ie;ctsi"inwacdl throughia centra apertu ein theinlate' towardsithamiddley haftJtheJfianeeJZ oniu. iptherwiselsecuredto dleib rtioh J2 of the,

s bstantiallyihalf. LA yb tween s e ds w tha ,airzof .externaLdia-i a "trunnion's 13 Ilwhich a prov ed with*ann l r-tb aringsy .carriedlby h n a dly: b q-i et n'eizends o the a ove. men- .l tfil's de lates may; be nforced mana erial. rlbs'jfi il iieletirigiin a c.en-, i b h 1. i m in m lly surrounds the .;cor-, respo d n iu trum a2" 4' Thereapsy tween th Jupi er. yandglowen ends of the ,entilatingshaft, th lasentte dste :thehunnehandlowon porting arms l9 by which it is secured to say three equidistantly spaced supporting lugs 36 arranged around the interior of the middle portion of the ventilating shaft, thefanbeingdisposed beneath the motor. The electric leads (not shown) to the motor 35 from a terminal plug 31 bolted to the plate It may pass through one of the hollow fulcrum pins 2| of the trunnion. bearings 23 previously referred to, the middle portion of the ventilating shaft being provided with an appropriate aperture on the axis of the trunnion.

From the foregoing description it will be seen that in order to render the fan unit accessible, it is only necessary to remove the sealing bands 21 and rotate the middle portion I! of the ventilating shaft ill, with the fan unit therein, out of line with the adjacent portions H and 13 of said shaft. Thus it will be seen that where. for example the upper portion ll of the ventilating shaft carries a heavy cowl 38 above a ships deck 39 as shown in Figure 4, the above procedure is considerably simpler than removing said cowl or entering the ventilating shaft to reach the fan as has hitherto been the practice."

It is to be understood that the invention is not limited to the particular construction described above. For example the ventilating shaft may be other than circular in cross section and other than vertical in position.

As previously indicated the middle portion 12 of the ventilating shaft l may be turned through 180 about its pivotal axis if desired to reverse the position of the fan and consequently reverse the direction of the air flow produced by the fan.

What I claim is:

1. A ventilating system including a ventilating shaft comprising an intermediate portion and adjacent portions two side plates connected by apertured top and bottom plates within which the adjacent portions of the shaft are secured, a stud shaft projecting inwardly from each side plate towards the intermediate portion of the ventilating shaft, and diagonal ribs on each side plate meeting in a central bush surrounding the corresponding ,stud Shaft.

2. A ventilating system including a ventilating shaft having an intermediate portion pivoted between adjacent portions of said shaft, a fanunitin the intermediate portion two sideplates connected by apertured top and bottom plates within which the adjacent portions of the shaft are secured and a stud shaft projecting inwardly from each side plate towards the intermediate portion of the ventilating shaft, for pivotally mounting the intermediate portion, one of said studs be:- ing hollow for the passage therethrough of elec- '4 trio leads to the fan motor within said intermediate portion.

3. A ventilating system comprising a ventilating shaft containing a ventilating fan unit, wherein the fan unit is carried by a portion of said shaft which is pivotally mounted between the adjacent portions thereof about a central transverse axis so that said intermediate portion may be turned out of line with said adjacent portions to render the fan accessible, and turned through to reverse the direction of air flow produced by the fan if desired.

4. A ventilating system as claimed in claim 3 comprising lugs on the interior of the intermediate portion for supporting the casing of an electric motor for driving the fan.

5. A ventilating system including a ventilating shaft comprising an intermediate portion and aligned adjacent end portions, means for mounting the intermediate portion between the end portions including two side plates connected by top and bottom plates, each plate having a central aperture within which said adjacent end portions are secured, means at right angles to the axis of the ventilating shaft for pivotally mounting the intermediate portion between the end portions, and a ventilating fan unit supported by the intermediate portion, whereby the intermediate portion carrying the fan unit may be turned about an axis at right angles to the axis of the ventilating shaft.

6. A ventilating system as claimed in claim 5, wherein the means for pivotally mounting the intermediate portion consists of stud shafts projecting inwardly from each side plate toward the intermediate portion of the ventilating shaft, and a pair of external diametrically opposite trunnions mounted on the said inwardly projecting stud shafts.

' THOMAS WYLIE.

REFERENCES CITED The following references are of record in the file of this patent:

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