US2379638A - Extractor ventilator - Google Patents

Description

July 3, 1945. B. D. HUGHES ETAL 7 ,379,5

EXTRACTOR vmi'fiL-Awon A Filed Jan. 12, 194i? 2 Sheets-Sheet 1 B. D. HUGHES EIAL EXTRAGTOR VENTILATOR Filed Jan. 12, 1943 July 3, 1945.

2' Sheets-Sheet 2 FIG];

I 5Enzer tors. 6' 55nd Attorney Patented July 3, 1945 UNITED STATES A ENTf l i nxrnecr oifi zgp gi Ford, Wembley, England I Application January 12, mn smnsenznt In Great Brit n J n ry22i1942 8 Claims. (Cl. 98---8-4) This nvention relates to extractor ventilato and t has for its object the provision of a ventilater desi ned more perticularlyfor use on th side walls of ildings, cabins or vehicles tho it is equally applicable for use as a roof extractor, an essential feature of said ventilator being that t eilectively prevents he entry or ter and the exit-or light from within. j s

In the accompanying drawings which illustrate this invention t Figure 1 is a side elevation partly in section of one embodiment of the invention.

Figure .2 is a sectional side elevation of a fur-. ther embodiment.

u es 3 4, 5, 6, and 8 are similar views? f further embodiments, and

Figures 9 and are diagrammatic views, illustrating two further embodiments.

In the embodiment of the invention illustrated in Figure l, the ventilator comprises a short length of tube I constituting the stack pipe, the

inner end of which is outwardly flared or of conical form. A horizontally disposed annular plate orring 2 which constitutes a surge plate is furnished on its inner periphery with a flange, 3 by means of which said surge plat is secured to the central tube Or stack pipe I. A centrally apertured dome shaped element 4 and a shallow unapertured dish shaped element or cover member 5 are supported above the central tube I by brackets 5 in the desired position relativelyto the central tube, surge plate and each other.v The peripheral edge of the unapertured element or cover member 5 is reversely curved as at 1 so that when the parts are assembledias showna .fiared aperture 8 is formed between the apertured. memher 4 and the cover member 5 which flaredaperture is surrounded by deflector means. comprisin a band 8 of conical form, the major circumfer ence of which is outwardly flared as at it, said deflector band being maintained in the desired position by a. plurality of brackets or spaci members H, The ventilator may be provided with a wall (or roof) plate !2 furnished with a central flanged aperture to which the dependin flan e 3 on the surge plate 2 may be secured or if desired a longer len th of stack pipe may be employed either in place char in ddition to, th wall (or roof) plate. I In the embodiment of the invention il strated in Figure 2, the horizontalsurge plate 2..i I repl y a Vertically disposed cylindricaiplate 3 positioned pproximately mid way between the peripheral edge of the apertured domesha'ped element 4 and the deflector band .Inthis onstruction the elements 4 andi are spaced m r idely apartand the lement 4 is sup or d b and maintained in the desired spaced relationship by a plurality of spacingm'embers l4 a bolt or the like l5. Thedeilector :band- 9 and surge plate 3 are supported on the wall (or roof) plate I27 by brackets 16 the upper ends of which also serve to support the cover member 5.

i According to, the embodiment of the invention illustrated in Figure the stack pipe I, surge plate 2 and wall iorroof plate 12 are approximatelyathe same 'asin' the construction shown in V Fi ure 1, but in this case the dome shaped element disposed above the upper end of the stack pipe comprises an un pertured element l1 supported'by the cover member 5. A vertically disposed deflector "sur e plate IB is secured by a horizonta y dispose flange 19 to the Wall plate Ilse as to vform an enclosure and prevent the entry of Water between the lower edge of thev deflector surge plate l8 and the wall plate H. The deflector banal! is "pcsitionedaround the deflector sur e plate; 18 said band and the cover memher, 5 being su orted and ma ntained in their desired relative positionsby a plurality of brackets 20 secured to the surge plate 18 as shown or in any other convenient manner, V i V The embodiment illustrated in Figure 4 is the same asth t in Figure 3 with. this exception,

that the dome shaped element I1 is formed somev rse ycu d as'at 21,. V

e. embodim nt lustrated in Figure 5 is what. shal wer. and the peripheral edge is reagain practicallythe same as that in igure 3,

bu n is se he d f e or band 9 is vertically p sed a d p r e 'with the vertically d sposed surge P e t, The w r dge or the deflector band may, if desired, be outwardly flared as. in

, dicated' by broken lines at 22.

According to the further embodiment illustrated in'Figure 6, the annular ring or surge plate secured to the stack pipe I is of conical .form downwardly directed as at 2-3 and the vertically disposed surge plate isreplaced by a, horizontally disposed water bafile plate 24 extending inwardly from the lower edge of the vertically disposed deflelctor band 9 t o Within a short distance of the wall of stack pipe or central duct I. As shown the baffle plate 24 may be formed integrally the deflector band 9, or, thetwo parts may be connected together by flanges,

Asshown in Figures, the stack pipe I may if desired be formed integrally with the wall or roof plate l2.

A c rdingt he embodiment otthe invention illustrated in Figure '7, designed to produce a twin ejector action, the central element of the ventilator comprising a stack pipe I, secured to a wall or roof plate l2, a centrally apertured dished shaped element 4, an unapertured dome shaped element I1, and a shallow unapertured element or cover member 5, may be more widely spaced apart and surrounded by deflector means comprising a cylindrical inner deflector or surge plate 25 and outside this a pair of conical deflector bands 26 and 21 so arranged that their maximum diameters are flared and directedtowards each other. The stack l is provided adjacent its upper end with an annular conical ring 28*constituting a surge plate. The several elements are maintained in their relative positions by a plurality of spacing members I4, liand brackets 29 arranged in any convenient manner.

According to a still further embodiment as illustrated in Figure 8 the central elements may be arranged as above described and be surrounded by deflector means comprising a cylindrical inner deflector or surge plate 30 of any convenient depth, and outside this a pair of conical deflector bands 3|, 32 the maximum diameters of which are flared and downwardly directed, said deflector means 30, 3i and 32 being maintained in position by suitably disposed brackets 33, 34 the latterbeing also, if desired, arranged to support certain of the central elements. In this embodiment a deflector plate 35 having anupwardly directed peripheral edge is secured to the base plate [2 and serves to deflect water or' air upwards on to the'deflector 32.

For. various purposes the number and arrangement of the outer deflector bands may bebination a short stack pipe having a flared upper end, a base plate secured to said stack pipe, a dome shaped element arranged above, said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved-arranged above said dome shaped element, at least one deflector surge plate surrounding said stack pipe for cooperation with the reversely curvededge of said dish-shaped element to cause an outward deflection of the air flow, deflector means surround-' ing said elements and a plurality of brackets and spacing members for supporting the several elements and parts relatively. to each other.

2. An extractor ventilator comprising in combination a short stack pipe having a flared upper end, a base plate secured to the lower end of said stack pipe, a deflectorsurge plate located below said flared upper end of and outwardly directed from said stack pipe, an unapertured dome shaped element arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said unapertureddome shaped element, a vertically disposed deflector surge plate surrounding said ing said elements and a plurality of brackets and spacing members for supporting the several eleoutwardly directed surge plate at a distance from ments and parts relatively to each other.

3. An extractor ventilator comprising in combination a, short stack pipe having a flared up-' per end, a base plate secured to the lower end of said stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe, a dome shaped element arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said dome shaped element, deflector means comprising an outer deflector band of conical formation the lower part of which is outwardly flared, the upper edge of said deflector band being disposed substantially in the same plane as the peripheral edge of said dish-shaped element, and a plurality of brackets and spacing members for supporting the several elements and parts relatively to each other.

4. An extractor ventilator comprising in combination a-short stack pipe having a flared upper end, a base plate secured to the lower end of said stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe, an apertured dome shaped element arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said dome shaped element, deflector means comprising an outer deflector band of conical formation the lower part of which is outward- 1y flared, the upper edge of said deflector band being disposed substantially in the same plane as the peripheral edge of said dish-shaped element, and a plurality of brackets and spacing members for supporting the several elements relatively to each other.

5. An extractor ventilator comprising in combination a short stack pipe having a flared upper end, a base plate secured to the lower end of said stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe, an unapertured dome shaped element arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said unapertured dome shaped element, a vertically disposed deflector surge plate arranged externally to the peripheral edge of the dome shaped element, deflector means comprising an outer deflector band of conical formation the lower part of which is outwardly flared, and a plurality of brackets and spacing members for supporting the several elements and parts relatively to each other.

6. An extractor ventilator comprising in com bination a short stack pipe having a flared upper end, a base plate secured to the lower end of said stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe, an unapertured dome shaped element the peripheral edge of which is reversely curved arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said unapertured dome shaped element, a vertically disposed deflector surge plate arranged externally to the peripheral edge of the dome shaped element, deflector means surrounding said elements comprising an outer deflector band of conical formation the lower part of which is outwardly flared, and a plurality of brackets and spacing members for supporting the several elements and parts relatively to each other.

7. An extractor ventilator comprising in combination a short stack pipe having aiflared upper end, a base plate secured to the lower end of said 2,379,638 7 stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe an unapertured dome shaped element arranged above said stack .pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said unapertured dome shaped element, a vertically disposed deflector surge plate arranged externally to the peripheralledge of the dome shaped element, the lower edge of said surge plate being arranged in close contact with said base plate, deflector means comprising anouter deflector band of substantially cylindrical forma tion, disposed with its upper edge in substantially the same plane as the peripheral edge of said dish-shaped element, and a plurality of brackets and spacing members for supporting the several elements and parts relatively to each other. I

8. An extractor ventilator comprising in combination a short stack pipe having a flared upper end, a base-plate secured to the lower endof said stack pipe, a horizontally disposed deflector surge plate secured to said stack pipe, an unapertured dome shaped element arranged above said stack pipe, a shallow dish shaped element, the peripheral edge of which is reversely curved, arranged above said dome shaped element, a vertically disposed deflector surge plate, arranged externally to the peripheral edge of the unapertured dome

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