US2403291A - Damper - Google Patents

Description

July 2, 1946. F, J, KURTH 2,403,291

DAMPER Filed Dec. 8, 1942 2 Sheets-Sheet 1 July 2, 1946. F. J. KLJRTH 2,403,291

DAMPER Filed Dec. 8, 1942 2 Sheets-Sheet 2 PatentedJuly2,1 946 UNITED srATs DAMPER Fran: J. Klillfli, New York, N. Y., assignor to An emostat Corporation of America, New York, lil. Y., a corporation of Delaware Application December a, 1942, Serial No. 46am 18 Claims. (01. 98-40) ent amounts of air through difleren't portions of the outlet or diffusing device according to requirements in particular instances.

'-manner and may have any other desired shape.

of either substantially equal amounts or difler- With the foregoing and otherobjects it view, I which will become more fullyappar'ent as the nature of the invention is better understood, the

same consists in a damper embodying the novel features of construction, combination and ar-- rangement bi parts as will be hereinafter more fully described, illustrated in the accompanying drawingsand defined in the appended claims.

In the accompanying draw1ngs,-wherein like characters of reference denote corresponding. parts in the different views:

Figure 1 is a central, vertical section through a damper constructed in accordance with one practical embodiment of the invention.

For example, said frame may be cast and instead of having four arms and being in the shape of a Greek cross, it may have any other desired number of arms of the same or different lengths and may be of a shape dictated by the number of arms which it comprises. In any event, arm connectingportions ll of said frame preferably are spaced equal distances from the center-of said frame to adapt said frame to fit either into acylindrical air supply duct or, equivalently, into the cylindrical neck of an air outlet or diffusing device crosswise or at right angles'thereto and to be held therein against lateral shifting movement by the cooperation of said portions H with the duct or neck, as the damper particularly is intended for use in association with air outlet or diffusing devices of circular shape and usually such devices have cylindrical necks or are connected to cylindrical ducts-through which air is supplied to them and in which the damper is to be located. In this connection, the frame A has been illustrated in the present instance as being disposed in the cylindrical neck I 2 of an air'outlet or diflusingdevice B of a well known type comprising a plurality of successively smaller,.

open-ended, hollow, frustro-conical members l3 spaced successively inwardly of one another to Figure 2 is a horizontal section on the line 2-2 of Fig. 1.

Figure 3 is a, fragmentary enlarged vertical section showing in detail the means connecting together certain of the vanes of the damper for simultaneous actuation and illustrating by. full define therebetween a plurality of flaring passageways through the supplied air flows, and as being secured in said neck by means of screws.

I4 extending through the portions and into and dotted lines open and closedpositions, re-

spectively, of the vanes.

Figures 4, 5 and 6 are elevations of different vanes of the damper; and v Figure 7 is a view similar to Fig. 3 illustrating an alternative form of means for simultaneously adjusting certain ofthe vanes of the damper.

Referring to the drawings in detail, it will be observed that the present dampercomprises primarily a frame, designated generally as A, having, in the particular instance illustrated, the

said neck. However, the frame A need not include the portions II and may be secured in a neck such as the neck i2 or, equivalently, an air 1 supply duct, in any other appropriate manner.

In and extending transversely of each of the arms of the frame A is a series of horizontally distical as shown by full anddotted lines, respecgeneral shape of a (lireelr cross,- and that said frame comprises four arms of equal length spaced ninety degrees apart and each composed of a' pair of side rails designated as l0, It. This frame A may be formed from a single length of strap metal of suitable thickness and width bent into the shape described, or it may be formed from any other suitable material in any other suitable posed, P rallel, spaced apart vanes 15 which may be formed from sheet metal or other suitable material and which, in accordance with the invention. are suitably pivoted at their ends to the rails to, i II for rotatable adjustment between vertical positions and positions inclined to the vertively, in Fig. 1, either for the purpose in. the first instance of permitting supplied air to flow directly downwardly through the spaces between them to the device B orfor the purpose in the second instance of deflecting the supplied air either outwardly or inwardly as may be desired.

To provide for pivotally mounting said vanes upon the rails ll, it said vanes may be provided at their ends with ears it bent at right angles thereto and rivets or other suitable fasteners ll i may extend through alined holes in said ears and the rails III, Illywhile in order to provide for retaining said vanes in any positions to which they may be rotatablyadjusted said fasteners ITmay be employed to-c'lamp said earsagainst the rails III, III with suflicient tightness so that the resulting friction accomplishes the desired purpose.

Each vane I501 each series of such vanes may, of course, be manually rotated to any desired position independently of each other such vane.

In the embodiment of the invention illustrated may be thermally or otherwise, controlled as, for

of vanes I5 or in a'horizontal plane below orabove the plane of said series of vanes I5. In

' this connection it will be noted that in the illustrated embodiment of the invention the frame A has secured thereto at the junction of each two adjacent right angularly disposed rails III, II) of adjacent arms thereof or, in other words, at each of the four corners of the central, rectangular space in said frame, a vertically disposed angle-iron member I8; that these angle-iron example, by the temperature of either the supplied air or of the room or enclosure air. Preferably, too, the vanes I8 are divided into two sets disposed respectively to opposite sides of the center of the damper and the two sets of vanes'are connectedtogether for reverse operation with respect to each other to insure the same type of air flow regulation at each side of the center of the damper.

The vanes of each of the two sets may be connected together in any suitable manner as, for example, by means of tongues 26 bent from the vanes at right angles thereto and pivotally connected, as indicated at 2|,'to a rod 28, the pivots 21 being offset from the pivots 2I so that by shifting the rod 28 longitudinally the vanes may simultaneously be rotated between vertical and horizontal positions. The tongues 28 may be bent members depend'from said frame A; that opposite pairs of said angle-iron members are connected together adjacent totheir lower ends by rails 28, and that the vanes I8 extend between said. rails 28 and are pivoted thereto, 'as indicated at 2 I, in the same manner as the vanes I5 are pivoted to the rails III, III, for rotatable adjustment between vertical positions and positions inclinedto the vertical for the same purpose as adjustment of the vanes I5. Accordingly, the series of vanes I8 is effective to regulate flow of supplied air through the central, rectangular the outlet device B in the same manner as each of the four series of vanes I5 is effective to regulate flow of supplied air'to the related underlying portion of said outlet device. In fact, all of the vanes I5 and I8 are rotatablyadjustable not only be-- tween vertical positions and positions inclined to the vertical, but to horizontal or substantially horizontal positionsto completely or substantially completely, out ofi flow of s pplied air to any part of the outlet device B incase that should be desired in any particular instance. Moreover, the angle-iron members I8 are provided with vertically spaced holes 22 for the selective reception of the screws, bolts or other fasteners 23 by means of whichsaidangle-iron members are secured to the rails I 0, whereby said angle-iron members and, consequently, the series of vanes I8 may be vertically adjusted relative to the frame A and,

from top portions of the vanes I8 to provide recesses 29 opening through the tops'of the vanes, as shown in Fig. 6, to accommodate the rod 28.

The vanes I8 preferably are of such widths, and their pivots 2i preferably are spaced such distances apart, that when said vanes are rotated -to horizont'alpositions, as indicated by dotted lines in Fig. 3, they are disposed in a common plane, substantially in edge to edge abutting relationship, so as to completely or substantially comspace in the frame A to the central portion of consequently, with respect to the series of vanes space defined by the angle iron members IS. The

vanes 24 of these four additional series may be pivotally connected, as indicated at 25, to the angle-iron members I9 in the same manner as the vanes I5 and I8 are pivotally connected to the pletely close the central rectangular area of the damper against flow of supplied air directly downwardly therethrough to the outlet device B;

Any suitable means may be provided to connect together the two sets of vanes I8 for simultaneous reverse rotation of the vanes of these two sets relative to each other. In this connection and as illustrated by way of example in the drawings, a pair oflinks 30, 30 may be pivotally connected at their upper ends to a cross head 3| and may extend downwardly. and inwardly from said crosshead and at their lower ends may be pivotally connected, one to each set of the vanes I8, through the instrumentality of the pivot element 21 which connects the innermost vane of the related set to the related rod 28. Thus, by vertical movement of the. crosshead the links 38, 38 will be caused to act in conjunction with the rods 28 and in an obvious manner tosimultaneously rotate the two sets of vanes in opposite directions either toward 7 vertically disposed open positions or horizontally.

disposed closedpositions, depending upon whether the-crosshead is moved upwardly or downwardly.

According to the embodiment of the invention illustrated in Fig. 1' of the drawings th cr'osshead 3i has connected thereto'by means of a rod 82 a suitable thermostat device, designated generally as C, which is suitably mounted lnythe path of flow of the air supplied to the outlet device l3 whereby said crosshead is raised and lowered in detailed description of asoaeei the same is deemed unnecessary.

In Fig. 7 ofthe drawings is illustrated an alter-- native means of raising and lowering the crosshead 3|. According to Fig. 7 a suitable bearing 38 is suitably mounted below the vanes it in vertical alinement with the central portion of the crosshead iii, a vertical shaft 13 3 is rotatably mounted in said bearing and is held thereby against vertical movement and at its upper end is threaded on the central portion oi the crosshead 88, and on said shaft is fixed. a'sheav ilfi around which extends a rope, cord, cable or the like 36 which may lead to any desired point for manual manipulation to rotate said sheave and shaft, thereby to cause said shaft, because of its 6 spaced apart rotatably adjustable vanes above threaded connection with the crosshead 39, to

raise or lower'said crosshead and thus 'rotatably adjust the vanes 85. Y

Preferably, but not necessarily, all of the vanes It, It and 2dare turned upon themselves at their tops as indicated at El to provide rounded edges for the purposeof avoiding or reducing noise in-. cident to the supplied air impinging against and flowing over said edges. Moreover, the corners of the vanes 28 preferably are removed, as indicated at 86, so that the diilerent sets of said vanes are adjustable without interference with each other at their ends. 1

The vanes l8 are intended primarily to regulate the volume of air flowing to the central portion of the outlet device B. On the other hand, while the sets of vanes l5 and 24 also are eflectlve to regulate the volume of air flowing through thedamper, these sets are intended primarily for adjustment to secure either equalized,

or substantially equalized, air flow to the different portions of the outlet device 13, or a greater or lesser volume of air supply to any given portion of said outlet device as may bev desired in any particular instance. A

Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art,

and it will of course be understood that changes in the form,.proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claims.

I claim: L 1. A damper comprising a central set of pararms.

allel spaced apart rotatably adjustable vanes disposed in a common plane, a plurality of other sets of parallel spaced apart rotatably adjustable vanes each disposed outwardly of said coiltral set of vanes and in a plane parallel to and.

spaced from the plane of said central set of vanes, and other sets of vanes disposed in planes at right angles to the planes of said central set and said other sets and extending between the margins oi said central setand the inner ends of said other sets. I

2. A damper comprising a central set of horizontal parallel spaced apart rotatably ,adlustable vanes, a plurality of other sets of horizontal parallel spaced apart. rotatably adjustable vanes disposed outwardly of and abovesaid central set of vanes. and vertical sets of horizontal parallel spaced apart rotatably adjustable vanes at the sides and ends of said central set of vanes and between said central set of vanes and the' sets of vanes thereabove.

3. A damper comprisingv a central set of horizontal parallel spaced apart rotatably adjustable vanes, other sets of horizontal parallel and one at each side and one at each end of said central set of vanes, and vertical sets of horizontal parallel spaced apart rotatably ad- Justable vanes one at each side and end of said central set oi' vanes and between said central set of vanes and the related set "of vanes thereabove.

.bers and pivotally mounted at their ends upon their related vertical members for rotatable ad- Justment, rails connecting opposite pairs of said vertical members adjacent .to their lower ends. and a set of horizontal parallel vanes spaced apart along and pivotally mounted at their ends upon said last mentioned rails for rotatable ad- Justment.

5. A damper comprising a central set of parallel spaced apart rotatably adjustable vanes disposed in substantially a common plane, a plurality of other sets of. parallel spaced apart rotatably adjustable vanes'disposed outwardly of and adJacent to said central set of vanes substantially in planes parallel to the plane of said cen; tral set, mounting means for said other sets of varies, and means mounting. said central set of vanes for unitary adjustment in directions at right angles to' the plane thereof and relative to said other sets of vanes.

6. A damper to be-mounted in an air or gas duct to regulate and direct flow of air or gas 'therethrough, said damper comprising a, frame including more than two arms disposed substantially radially with respect to the center of said frame, ,each arm comprisinga pair of parallel spaced apart side rails, and a separate set of air or gas deflecting and volume regulating vanes mounted between the side rails of each of said '7; A damper to be mounted man air or gas duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including more than two arms disposed in a. com-' mon plane and extending substantially radially with respect to the center of said frame, each arm comprising a pairyoi' parallel spaced apart side rails, and a separate set of airor gas. defleeting and volume regulating parallel vanes mounted between the side rails of each of said 8. 'Adamper'to be mounted in a'n air or gas v duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including more than two arms disposed radial- 1y with respect to the center of. said-frame, each arm comprising a pair of parallel spaced apart side rails, and a. separate set of air or gas deflecting and volume regulating vanes mounted between the side rails of each of said arms in the plane thereof.

-9. A damper to be mounted in an air or gas duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including more than two arms disposed radially with respect to the center of said frame, each in each arm between the side rails thereof, the vanes of each set extending transversely .of their related arm'and being mounted at their ends a rm lncluding'a pair of parallel spaced apart side rails, and a separate set of vanes mounted upon the side rails thereof, said arms and said vanes all being disposed in a common plane.

10.'A damper to be mounted in an air or gas duct to regulate and direct flow'of air or gas therethrough, said damper comprising" a frame including a central portion and more than two, arms disposed radially with respect to the .center of said central portion, a separate set of air or gas deflecting and volume regulating parallel vanes mountedin each of said arms, and a central set of parallel vanes mounted in a common plane in the-central portion of said frame forwardly with respect to said first mentioned sets.

. .v I 8 I 14. A damper to be mounted in an air or gas duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including four arms disposed in a common plane and extending'radially with respect to the center of said frame, each arm including a pair of spaced apart side rails, a separate set of air or gas deflecting and'volume regulating parallel vanes mounted in each of said arms, a member extending at right angles to said frame from each of the four corners thereof where the side rails of adjacent arms meet, a set of air or gas deflecting and volume regulating parallel vanes mounted between eachediacent two of said members, rails connecting opposite pairs of said members, said member-connecting rafls being disposed parallel to and being" spaced from the 11. A'damper to be mounted in an air or gas duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including more than two arms disposed in a common plane and extending radially with respect to the center of said frame, each arm including a pair of spaced apart parallel side rails, a separate set of air or gas deflecting and volume regulating parallel vanes in and extending transversely of each arm and mounted between the side rails thereof, said sets of vanes being disposed in the plane of said arms and the vanes of each .set being mounted at'their ends upon the side rails of their related arm. v

12. A damper to be mounted in an air or gas duct to regulate and direct flow of air or gas therethrough, said damper comprising a frame including more than two arms disposed in a eluding a pair-of spaced apart side rails, a separate set of air or gas'defiecting and volume regulating parallel vanes mounted in each ofsaid arms in the plane thereof, a central set of air or gas deflecting and volume regulating vanes mounted in said frame inwardly with respect to said first mentioned sets and disposed in a plane parallel to and spaced from the plane of the vanes of said first mentioned sets, andother sets common plane and extending radially with respect to the center of said frame, each arm inr of air or gas deflecting and volume regulating vanes disposed in planes at right angles to said first mentioned sets and said central set and extending between the margins of said central set and the inner ends of said first mentioned sets.

13. A damper as set forth in claim 12 including means mounting the central set of vanes for adjustment toward and away from the plane of the first mentioned sets of vanes. 1

ing means mounting the central set of vanes for unitary adjustments in directions perpendicular to the plane thereofxrelative' to the first mentioned sets of vanes. p

17. A damper to be mounted in an air or gas duct to regulate and direct flow of air or gas therethroug-h, said damper comprising a frame including a plurality of arms each including a pair of parallel spaced apart side rails, said arms being disposed in a. common plane, aseparate set of parallel vanes in each arm disposed in the plane thereof and extending transversely between and mounted at their ends upon the side-- rails thereof, and a central set of parallel spaced apart vanes disposed in a commonplane parallel to the plane of said arms and said first mentioned sets of vanes and mounted in the central portion of said frame forwardly with respect to the vanes of said first mentioned sets.

18. A damper asset forth in claim .17 including means mounting the central set of vanes for unitary adjustments in directions perpendicular to the plane thereof relative to the sets of vanes that are mounted in the arms.

FRANZ J. xcn'm.

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