US2456311A - Ventilator - Google Patents

Description

B. K. PAGET VENTILATOR Dec. 14, 1948,

5 She'ets-Sheet 1.

Filed Feb. 7, 1944 I INVENTOR. BERT/E K. PAGET k B. K. PAGET Dec. 14, 1948.

VENTILATOR 5 Sheets-Sheet 2 Filed Feb. '7, 19 44 .R O mr Wi, RAM KJ md L 8% w :Nm

Dec. 14, 1948.

Filed Feb. 7, 1944 B. K. PAGET 2,456,3\l11' VENTILATOR' w 5 Sheets-Sheet 3 i zNvENToR. BE/eT/E Ky PAGETA BY B. K. PGET VENTILATOR Dec. 14, 1948.

5 Sheet's-Sheet 4 Filed Feb. 7, 1944 zNvENToR. BE/zT/E K. PAGE?- U. Jm

B. K. PAGET Dec. 14, 1948.

VENTILATOR 5 Sheets-Sheet- 5 v Filed Feb. 7'. 1944 Patented Dec. 14, 1948 NITED STATES PATENT OFFICE 2',456,311 VENTILATOR Bertie K. Paget, Detroit, Mich.

Application February 7, 1944, Serial No. 521,303

This invention relates to ventilators for industrial purposes and more particularly to ventilators of the multi-cell or multi-section unit type, such as disclosed in my Patent No. 2,134,l43, October 25, 1938.

It is among the objects of my invention to provide a ventilator having the advantages with respect to efficiency and operation of said patented ventilator and one Which will provide a number of improvements relating to lowered costs, simplicity in construction, fiexibility of use and improved air flow and Operating characteristics.

More particularly it is an object yof my invention to provide a multi-cell or multi-section unit ventilator wherein a series of bafiles and dampers are arranged with respect to each other within the unit so that the dampers in their open position function to prevent Wind-blown air from entering the interior of the building which is being ventilated.

It is a further object of my invention to provide a multi-cell or multi-section unit wherein a series of bafiles and dampers are so arranged with respect to each other, Within the unit, that the path of the air or gas moving upwardly through the ventilator between one pair of baffies and dampers is parallel to the path of air or gas moving upwardly through all of the other pairs of baflies and dampers, so as to provide a passageway between each cooperating pair of baffles and dampers which will be especially conducive to a laminar flow of air or gas upwardly through the ventilator.

It is a further object of my invention to provide a ventilator of a multi-cell type, wherein a series of parallel, inclined baflles are arranged near the bottom of the ventilating unit and a series of pivoted dampers are arranged thereabove so that the dampers may be disposed in their open position at an angle to the bafiles therebelow which will prevent rain from entering the building being ventilated.

It is a further object of my invention to provide a ventilator according to the preceding objects in which the bafiles and dampers are provided with drainage means constructed and arrang-ed to carry drainage water along-the lower edges of the dampers and bafiies, transversely of the opening being ventilated. v

It is a further object of my invention to provide a ventilator according to the preceding objects in which the drainage means for the-baflles is constructed and arranged to accommodate and carry away moisture resulting from M suchcondensation as may form onith'elowe'r side ofthe 4 Claims. Cl; 98 42) bafile as well as rain water falling upon theupper side of the bafile.

" It is a further object of my invention to providea multi-cell vventilator according to the preceding objects with an improved damper-operating mechanism constructed and arranged to facilitate the installation of the unit and to house the damper-Operating mechanismlat one side of the unit in a way that will contribute to the ease of operation, low cost and long, efficient life of the ventilating unit.

Further objects and advantages relating to low manufacturing costs, ease in handling, installation, and sturdiness in construction will appear from the following description and the appended drawings, wherein:

Figure l is a perspective view, with parts broken away, of a multi-cell unit constructed according to my invention;

Figure 2 is a sectional View taken longitudinally of the unit showing the dampers in open position;

Figure 3 is a view, corresponding to Figure 2, showing the dampers in closed position;

Figure 4 is a sectional view taken transversely of the unit;

Figure 5 is a perspective view showing a bafile element included in my ventilator unit;

Figure 6 is a view showing a damper element and damper rod comprising a part of the unit;

Figure 7 is an elevation with parts in section showing a damper-Operating mechanism for-a ventilator made according to my invention; and

Figure 8 is a showing of a modified form of ventilator made according to my invention.

,I have obtained the objects above referred to and'the advantages associated therewith by providing a casing With a series of inclined bafiles arranged adjacent the bottom of the casing, and a series of dampers mounted thereabove so that the dampers in their open position cooperate with the bafiles therebelow to form with the baflles a series of ventilating passageways. Said passageways in the lower portion of the uni are parallel to each other due to the parallel arrangement of thev baffles. The passageways formed above the baffles are likewise parallel to each other due to the parallel disposition of the dampers in their open position. The lower section of th-e passageways, that is the section of the passageway formed by the baffles, is at an angle to the passageway formed by the dampers. I have found this arrangement to be well suited for-the maintenance of an unrestricted free flow Lof, air upwardly through the ventilator.

According to my invention, the dampers When closed perform the usual function of dampers, in that they prevent the movement of air upwardly through the ventilator and in addition to said usual function, constitute a top or cover for the entire unit to prevent snow, ice or dirt from accumulating within the ventilator itself.

It will also be understood as the description proceeds that the dampers When open provide an air conducting part of the ventilator as distinguished from the conventional damper, which, when open, is an idle, non-functioning element with respect to the air moving upwardly through the ventilator.

Referring to the drawings, Figure 1 illustrates a multi-cell unit indicated in its entirety as at 5, which comprises a casing having parallel side Walls 6 and 'l and end walls 8 and 9. Ordinarily the unit is arranged on a longitudinally-extending, rectangular opening vformed in the roof of the building to be ventilated and-the unit shown in Fig. 1 is proportioned 'to ventilate'such an opening. It will be understood, however, that the unit may have a length less than that shown and that the specific proportions as to width and length form no essential part of my invention. It will also be understood that-the unit may include any desired number of bafiles and damper-s so long as they are constructed and arranged to a'ccomplish the results obtained by the dampers and bafiies in the unit illustrated.

The unit 5 which I have employed for the purpose's of illustrating my invention, includes a series, narriely ten inclined baflies l2, ex'tending transver-sely of the unit. The ends of each of the baflie units |2 are preferably formed With flanges l3 which may be bolted, spot-welded or otherwise carried by the oppose'd'side walls 6 and l of the ventilating unit. The lower edge of each of the baflies l2 is' provided with an integrally formed drainage device comprising the side wall M and a curved bottom wall or trough [5. The side Wall f is formed with a series of stag'gered louvers le .so that moisture condens'ed on the lower side of the baflie |2 may run down said under side and into the louvers IS and thence into the trough formed by the curved bottom wall 15. Rain Water impinged upon the upper side of the baflie l2 may run downwardly into the trough formed by the bottom wall IE of the drainage device. The rain Water and the condensate thus gathered in the trough [5 fiows transversely to either side 'of the unit and thence downwardly through a notch I'I into a trough |8 formed by the lower edge of the side Walls 6 and 'I and the longitudinally extending lower rail or fiashing strip extension IQ. The lower edge of the walls [i and 'I i-s apertured at suitable intervals indicated at 20 to permit the drainage water in the trough l8 to iiow outwardly onto the roOf of the building. Preferably the openings 20 are offset from the ends of the troughs l5 to insure that wind pressure at the openings 26 will not adversely affect the drainage within the ventilator. In certain installations it may be necessary or desirable to lead the drainage water accumulated in the trough IS directly outward through apertures formed in alignment with the trough'IS in the side Walls 6 and '1. The illustrated drainage provision is preferred, however, in that it provides drainage for water flowing vertically down the inner wall of the side members 6 and T.

Arranged above the passageways formed by the bafiies l2 are aseries of damper elements 23 (ten in number) securedthrough the medium of brackets 24 to transversely extending damper rods 25. The rods 25 are rotatably supported in bearings 26 and 26 carried by the side walls 6 and 'l of the unit. The dampers in their open position, as shown in Fig. 2, are disposed in planes approximately normal to the planes of the baffles therebelow. The pivot points of the dampers are spaced from and arranged with respect to the plane of the upper edge of the baffles so that the dampers' and bafiles acting together prevent rain from entering the building being ventilated. The extreme angles of angularly moving rain directed downwardly toward the ventilator is indicated in the dotand-dash lines A and B. It will be observed that rain blown along the line indicated at A will, after itclears the top edge of the baifle [2, fall upon the next adjacent bafile and be conducted therefrom into the drainage trough at the lower edge of the baffle. Likewise rain moving dowiiwardly along the line indioated at B, in the event it misses the upper edge of a bafile l2, will strike the next adjacent bafile 12 and be conducted therefrom by the drainage trough at the lower edge thereof.

Preferably the dampers 23 are Secured to the pivot rod 25 so that the center of gravity of the damper element is eccentric of the axis pivot rod and the weight of the unbalanced damper material will assist in holding the dampers closed. That edge of the damper which becomes the topmost edge when the dampers are open is provided With an integrally formed arcuate rim 21 Which is adapted to receive and enclose a semiarcuate edge portion 28 on the lower edge of the neXt-adjacent damper When the dampers are closed. This arrangement provides an effective seal along the edges of the dampers in their closed position.

It will be observed that the damper elements at the extreme ends of the unit cooperate with arcuate and semi-arouate portions 29 and 30, respectively, formed at the upper edge of the end walls 8 and 9. The edge portions 28 of the damper elements, in addition to their sealing function when the dampers are closed, serve as troughs or gutters to lcarry rain water transversely of the damper element when the damper is open. In this way rain water striking the upper surface of the dampers 23 in their open position, is carried transversely of theV unit to the side walls thereof. Thence it flows downwardly on to the upper surface of the baiiles i2 and thence to the drainage portion 15 of the bafiie.

To facilitate the assembly or installation of the ventilating unit and provide an improved damper mounting, the upper edges 'of the side Walls 6 and 'l are formed with horizontal flanges 32 and 33 and said flanges are cut away'in the form of a T-s'lot 34 which is in alignmeht with a vertical slot 35 formed in the side wall.

The bearings 26 for the damper rods 25 are preferabLy-*formed of graphited bronze or similar self-lubricating hearing material and are shaped to provide an annular groove having a diameter corresponding to the width of the vertical slot 35 in the side wall of the unit. The maximum diameter of the bearings 26 corresponds to the width of the T-slot 34 and thus the damper unit may -be assembledy on the side walls by sliding the bearings 26 and 26'vertically downward into the position shown in Fig. 4. The side wall 1 of theV unit carries the damper-operating mechanism and will for convenience be referred to as the operating side of the unit. The damper rods 25 on the Qperating side of they.unit are provided' pulleys 45-46 so that movement of the Operatingl member 43 will effect the opening or closing of theV dampers. A stop 4l,carrie.d by the side wall engages the member 40 to'limit the openposition ofthe'dampers to that shown in Fig. 2, wherein thedampers function as heretofore described;

The operating mechanism is preferably enclosed by a housing member 50 Secured to the operating side of the unit by overlapping the flange 33. The housing 50 is provided with a depending portion as at 5l, adjacent the end wall 8, and the Operating cable or rope 43 is carried downwardly into the interior of the building through the housing portion 5I. The hearing 26 and the damper rods projecting through said bearings, on the side wall 6, are also housed in a channel-Shaped member 55 which is secured to the flange 32 as best illustrated in Fig. 4. It

will be understood that the horizontal portionsI of the housing members 50 and 55 are unslotted and thus close the T-slots 34 in a manner to retain the bearings 20 26 and the damper rods 25 in their Operating position.

As indicated at 5A in Fig. 2, the side and end walls of the casing 5 may extend upwardly so as to conceal the dampers when open. Such upward extension may be desirable to guard against the adverse effects of Winds which might strike the underside of the inclined dampers.

Although the preferred form of my invention illustrated in Figs. 1 to 7, is suited for most industrial ventilation uses, I am aware that in some installations it is not essential to provide a ventilator with dampers. Accordingly, I have shown in Fig. 8 a modified form of ventilator made according to my invention, wherein the pivoted dampers of the preferred form are replaced by fixed bafiles designed to be supported by the casing in a position corresponding to the position of the pivoted dampers when open. In this modification the rectangular casing comprising side walls 60 and end walls BI is provided with a series of inclined baifles 63 arranged near the bottom of the casing, substantially as in the preferred form. Spaced thereabove and staggered with respect to the lower baflles, is arranged a series of baflies 64. The bafiles 64 prevent the movement of rain down- Ward through the unit in substantially the same way as the dampers of the preferred form.

The modified form of ventilator shown in Fig. 8 may have pivoted dampers applied thereto at any time by mounting the pivoted dampers 65 as shown. It will be appreciated that the pivoted dampers 65 may be connected to each other and operated in unison substantially in the manner shown and described in connection with the preferred form.

Among the advantages associated with the modification is that the purchaser may select and use the ventilating unit comprising side walls 60 and end walls Bl and balfles 63-64, as original installation and thereafter should there be a change in the requirements of the ventilator, the dampers may be added without disturbing the original.v installation or Although :I have'shown andv described two4 formsafo'f my invention in considerable detail, it will beappreciated by those skilled in the art that numerous i modifications may be made therein without departing from the scope of the invention as defined in the following claims.

I-Iavingwthus described lmy invention, what I claim is: p

i 1. A ventilator comprising a casing having side and end walls; a series of spaced, inclined baifles arranged transversely of said casing, drainage devices carried by the lower edges of said baffies comprising a trough having a width sufficient to catch moisture moving down the upper end and lower sides of said bafiles, means to support said trough by said baflie having openings therein to permit moisture condensed on the lower side of the baffle to flow to said trough.

2. A multi-cell ventilator comprising a casing having side and end walls, a series of spaced, inclined bafiies near the bottom of said casing, forming inclined, air-conducting passageways, a series of pivoted dampers thereabove arranged in their open position to form a series of air-conducting passageways extending substantially normal to the first-mentioned passageways, the pivotal axis of said dampers being spaced vertically and horizontally with respect to the upper edges of said baflles, the lower edges of said dampers being provided with means to conduct drainage longitudinally of the damper and the lower edges of said bafiles being provided with means to conduct drainage longitudinally of the baflie, whereby rain is prevented from moving downwardly through the casing when said dampers are in their open position and means for receiving and conducting any water from said dampers and baffles.

3. A ventilator comprising a casing having side and end walls, a series of substantially parallel balfles extending transversely of the unit along the lower part of said casing, said bafiies inclined to provide a series of inclined passageways, a second series of baflies arranged transversely of the casing above said first series of bafiles, said second series of bafiles disposed at an angle substantially normal to the angle of said first series of bafiies, said second series of bafiles spaced vertically and horizontally with respect to said first mentioned series of bafiles so that the upper edge of a baflle of the second series overlaps in a horizontal direction the upper edge of one baflle of the first series and the lower edge of a baiile of the second series is overlapped in a horizontal direction by the upper edge of a next-adjacent baiiie means on the lower edges of each baflie for conducting drainage longitudinally of said baffies, and means for collecting water from vsaid first mentioned means.

4. A ventilator co-mprising a casing having side and end walls, a series of spaced inclined baflles supported by said side walls and provided with means along their lower edges for conducting drainage water longitudinally of said baifles, a series of pivoted dampers mounted above said bafiles adapted to be moved to an open position to present said dampers at an angle substantially normal to the angle of said bafiles with the upper edge of said dampers overlapping in a horizontal direction the upper edge of said baflles and the lower edge of said dampers overlapped in a horizontal direction by the upper edge of said baflles, to allow air to flow upwardly through said baffles and dampers and any rain moving downwardly 7 through vthe space between said '-ampers vfslmd bafes to be collected by said means on the. lower edges ofsad bafiies to prevent; theerain 'passing beyond said bafiles vand means for Leellectmg water from said firstmentioned baflle means.

" BER'I'IE K.:.PA.GE'I'.

REFEBENCES CLTED The following references are of record in the file of this patent: w

UNITED STATES PATENTS Number Name Date 345,694 Hayes 1 Ju1y'20, 1886 1,249,'731 Fekete .4-1- Dec. 11, 1917 15 1,323,978 Gebhardt Dec. 2, l1919 1,467,005 Lawrence Sept. .4,'1923 Number 7-,

Number:

Great Britain Aug. 27, 1931

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