US2833200A - Control register for air conditioning apparatus - Google Patents

Description

y 1958 E. OLSON ETAL 2,833,200

CONTROL REGISTER FOR AIR CONDITIONING APPARATUS Filed March 21, 1956 2 Sheets-Sheet 1 FIG.| 39 /5/2 20 U 20 fig /6 42 3? ,2, ML m I v i It a l i N 22- so 00 go 00 gm :0 49. 5% J0. 4 J g-4a 59 57 I Ta "45 35 A m 56 1 a 1 H HI T /O A? HQ II H 5 49 35 561 4 27 2/ 2a 5e 25 57 37 INVENTORS EDWIN OLSON BY ERNEST H. PERSON I A TORNEYS United States Patent CONTROL REGISTER FOR AIR CONDITIONING APPARATUS Edwin Olson and Ernest H. Person, New Britain, Conn, assignors to Allied Thermal Corporation, New iii-stain, Conn., a corporation of Connecticut Application March 21, 1956, Serial No. 572,988

3 Claims. '(Cl. 98-101) This invention relates to control registers for air conditioning apparatus of the type having fixed and movable vanes or baffles, and more particularly toa novel improved means for adjusting the movable vanes or baffles of such a register.

It is the aim of this invention to provide in a, control register of the type described in U. S. Patent No. 2,082,335 issued June 1, 1937, a novel and improved means for adjusting the movable baffles thereof whereby the plane of the movable baffles will be maintained parallel with the plane of the fixed bafiles in any adjusted position of the movable baffles in order to permit accurate adjustment of the register.

It is another aim of this invention that the adjusting means for the register be simple and economical to manufacture, while assuring long and trouble-free service.

Other objects will be in part obvious, and in part pointed out more in detail hereinafter.

The invention accordingly consists in the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereafter set forth and the scope of the application of which will be indicated in the appended claims.

In the drawings:

Figure 1 is a plan view of a register constructed in accordance with the invention as viewed from the upstream side thereof;

Fig. 2 is an enlarged side view of the register of Fig. 1 with a portion of the register cut away; and

Fig. 3 is an enlarged end view of the register of Fig. 1.

With reference to the drawings, a control register constructed in accordance with this invention is comprised of a hollow open ended casing having a pair of side walls 11 and 12 and a pair of end walls 13 and 14 extending therebetween. Mounted within the casing are a plurality offixed elongated baflles 15 having a tear drop cross section and fixed to the side walls 11 and 12 such as by the inwardly struck tabs 16 on the side wall 11 as shown in Fig. 3. The end walls 13 and 14 are each struck inwardly as at 17 to form end baflles having a cross section substantially equal to one-half the cross section of one of the bafiles 15.

Also mounted Within the casing are a plurality of movable baflles 20 having a cross section similar to that of the fixed bafiles 15 but extending in the opposite direction. As can be seen from Fig. 2, the baflies 20 are respectively interposed between the fixed baflles 15 and are of a diameter permitting spanning engagement with the fixed baffies to prevent flow of air through the casing when in the closed position, as shown in Fig. 2. As shown in Figs. 1 and 2, the baflies 15 and 20 are perforated and filled with fibrous material having a sound absorbent effect, such as glass wool, to provide attenuation of noises attendant to air flow past the baffles.

In order to support baffies 20 for movement relative to the fixed baflles and the casing, there is provided a frame 21 which in the preferred embodiment is comprised of a pair of spaced apart web members 22 and 23 ex- 2,833,200 Patented May 6, 1958 tending transversely of the baffles 20 and provided with notches as at 24 which receive the trailing edges of the baffles 20 which are fixed to the web members 22, 23 by any suitable means'ysuch as welding. The web members 22, 23 are provided with aligned elongated slots such as indicated at 25 on the web member 22.for a purpose to be later explained. A second pair of web members 27 and 28 are disposed parallel with the baflies 20 and in the preferred embodiment are fixed at either end to the web members 22, 23. The web members 27, 28'are also provided with aligned elongated slots extending at right angles to the slots in the web members 22, 23 as at 29 in the web member 27 for a purpose to be later explained.

As can be seen from Fig. 2 the movable baflles 20 lie in a plane which is parallel with the plane of the fixed baflles 15 when in the closed position and in moving the bafiies 20 away from the baflies 15' or upwardly as viewed in Fig. 2 to permit flow of air through the casing it is desired to maintain the plane of the bafiies 20 parallel with the plane of the baffles 15 in order to assure a predeterminable and smooth air flow. I

Therefore, in accordance with the invention, the center portion 36 of a crank member 35 having aligned crank arms 37 and 38, and aligned ofiset ends 39 and 40 pivotally received in apertures provided in resilient tab members 41, 42 fixed to the side walls 11 and 12, extends through and is engaged in the slots such as 25 in the web members 22, 23. The means for mounting the ends 39, 40 of the crank 35 permits easy assembly and disassembly of the crank member relative to the casing. Further in accordance with the invention, the center portion 46 of a second crank member having aligned crank arms 47 and 48 and aligned ofifset ends 49 and 50 journaled in the end walls 13 and 14 extends through and is engaged in the slots such as 29in the web members 27, 28.

As'should be apparent, if it is desired to move the movable baflles 20 away from the closed portion shown in Fig. 2 to permit flow of air through the casing it is merely necessary to drive one of the crank members 35 or 45 to rotate it about the pivotal axis of the ends of the crank member in a counterclockwise direction as viewed in Figs. 2 and 3, thus moving the frame 21 and baffles 20 upwardly or away from the bafiles 15 as viewed in Fig. 2. As the frame 21 is thus moved, the other of the crank members 35 or 45 will of course be pivoted about the longitudinal axis of its ends and because of its cooperation with the associated slots in the frame will maintain the parallel relation between the planes of the first and second set of bafiies during the movement of the second set. In certain applications because of the overall size of the register it might be advantageous to provide more than one crank member 35 or 45 in order to provide proper support of the movable baflles. I

In the specific embodiment the crank member 45 is the member which is driven and to impart rotation thereto there is rotatably mounted in the end wall 13 a stub shaft 56 which is provided with a hub 57 having a keyway 58 for the driving reception of the key 59 as shown in Fig. 1. Fixed to the shaft 56 is a pinion 60 engageable with a gear segment 61 fixed to the end 49 of the crank member 45. A washer 62 fixed to the shaft 56 is engageable with a portion of the gear segment 61 under the influence of a leaf spring 65 mounted on the end wall 1 13. A screw 66 rotatably mounted in the end wall 13 is threadably engaged with the leaf spring 65 intermediate its ends whereby rotation of the screw tending to move the leaf spring toward the washer 62 will increase the frictional engagement of the washer and gear segment, thus frictionally impeding rotation of the gear segment by the pinion to assure that the movable batfies 20 will remain in any adjusted position in which they are placed.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended'that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

1. In a control register of the type described, a hollow open ended casing, a first set of parallel spaced apart bafiles fixed to the casing, a second set of spaced apart bafiles respectively interposed between baflles of said first set of bafiles and lying in a plane parallel to and-movable toward and away from the plane of said first set, a frame to which said second set of bafiles are fixed having two said crank members is pivoted about its ends to move the second set of baffles relative to said first set the other crank member maintains the parallel relation between the planes of both sets of bafflesduring such movement.

2. In a control register of the type described, a hollow open ended casing including a pair of side walls and a pair of end walls extending therebetween, a first set of spaced apart parallel elongated baflles fixed to the casing,

a second set of spaced apart elongated baifles respectively interposed between baflles of a fixed set of battles and lying in a'plane parallel to and movable toward and away from the plane of said first set, a frame fixed to said second set of bafiles and comprising a pair of spaced apart web members extending transversely of the baffles of said second set adjacent the ends thereof and having aligned elongated slots, and a second pair of spaced apart web members extending parallel to the baffles of said second set and having aligned elongated slots extending at right angles to the slots in the first pair of web members, a crank member having a center portion extending through and engaging in the slots of said first pair of web members and having aligned ofi'set'ends pivotally mounted on the side walls of the casing, a second crank member having a center portion extending through and engaging in the slots in said second pair of web members and having aligned ofiset ends pivotally mounted on the end Walls of the casing, and means on the casing to rotate one of said crank members about its ends to move said second set of bailles relative to said first set.

3. In a control register of the type described, a hollow open ended casing, a first set of parallel spaced apart bafiies fixed to the casing, a closure member comprising a second set of spaced apart bafiles respectively interposed between the baliies of the first set of baifies and parallel thereto and a frame to which the second set of baffles are fixed, said closure member being mounted in sliding engagement with the interior of the casing for movement toward and away from the first set of bafiies, and a pair of crank members extending at right angles to each other and having their ends rotatably supported by the casing, said frame having a pair of spaced apart aligned slots engaging each of the crank members to maintain the closure member parallel to the first set of bafiles.

References Cited in the file of this patent UNITED STATES PATENTS 2,082,335 Hart June 1, 1937 2,328,659 McKenna Sept. 7, 1943 FOREIGN PATENTS 518,135 France May 19, 1921

Images