US2123693A - Air conditioning system - Google Patents

Description

July 12, 1938. w. CHILD AIR CONDITIONING SYSTEM Filed June 4, 1936 2 Sheets-Sheet l 5 mm H T m w; 0 v. w W W Q N A L H c Aw L o m h E F \\K \\A\\ mv f .rq a E I o m6 ow Mn w 31: 3. Wm 1,, t Q v m\ MPU W\ w NM huh n v mh m *h $1 QM i 2 Sheets-Sheet 2 ATTORNEYS.

L. W. CHILD AIR CONDITIONING SYSTEM Filed June 4, 1936 July 12, 1938.

I o\ Q Latented July 12, 1938 UNITED STATES.

,izatn AIR CONDITIONING SYSTEM Lachlan w. Child, South Bend, Ina, assignor, by

mesne assignments, to Air, Devices Corporation, Chicago, 111., a corporation of Delaware Application June 4, 1936, Serial No. 83,465

3 Claims.

prises upper and lower parts spaced apart to provide an annular outlet or mouth, with the fresh air supplied through the central portion of one part and room air (to be recirculated) through the central portion of the other part. After being conditioned, for example by a cooling coil inthe path of the air, the mixed cooled air is blown horizontally outward in all directions, just below the ceiling by means such as a centrifugal fan.

Various features of novelty relate to the provision and arrangement of shutters or the like controlling the fresh air supply, to the use of a freshair conduit simulating one of the beams of a beamed ceiling, or to supplying the air through the space above a false ceiling suspended below the true ceiling of the room, and to other novel combinations and desirable particular arrangements shown in the accompanying drawings, in

which:

Figure 1 is a perspective view of the upper part of the room, with the connections outside the room shown diagrammatically;

Figure 2 is a view, partly in elevation and partly in vertical section, showing the ceiling fixture and the hollow beam through which fresh air is supplied; and I Figure 3 is a. similar view showing a fixture to which fresh air is supplied from the space above of the upper part It may, as a matter of convenience of manufacture, be a separate annular stamping or the like 22. The part 22 and the part 20 are spaced apart to form an annular outlet or mouth, through which the conditioned air is forced substantially horizontally in all directions just below the ceiling.

The central portion of the lower part 26 is cut away to form an intake opening for room air to be recirculated; this opening is shown detachably covered by a grille or the like 24 carrying a filter 26.

The upper part 16 supports a vertical electric motor 28 driving a centrifugal fan or blower 30 about the periphery of which is a cooling coil 32 mounted on the posts l8. Cooled liquid refrigerant is supplied, from any suitable remote location outside the room, through a conduit 34, to an expansion valve 36 which opens into the coil 32. The refrigerant, after taking up heat in the 10 coil 32, passes as a gas through a conduit 38 to a motor-driven compressor 40, which delivers it through a water-cooled condenser coil 42 to an accumulator 44, from which it is again drawn ofi through the conduit 34,. 5

Moisture condensed by the coil 32 drips into an annular drip pan or the like 46 supported by the lower part 20, from which it is forced through a drain tube 41 by any suitable means, for example as described in my application No. 729,544, filed June 8, 1934, which has become Patent No. 2,082,- 44 June 1,.1937 or my application No. 83,466, filed concurrently herewith.

Fresh air enters, from outside the room, through a hollow beam 48 on the ceilingl This beam is blocked ofi just beyond the fixture described above, by a partition 58, leaving a dead end or false duct 52. The true duct end of the beam is formed with an outlet flange 5i sealingly embraced by an annular rubber seal 56 carried by a cylindrical flange about the central opening of the stamping 22. Thus fresh air enters through the top of the fixture and room air enters through the bottom of the fixture.

The relative volumes of fresh. air and room air 5 is determined by means such as a verticallyshiftable horizontal shutter or gate 68, slidably guided by pins 62 carried by a spider 66 secured by the bolts 66 which hold the grille 2E.

The shutter has at its center a nut 6t threaded on an operating bolt ill rotatably mounted in-a part 12 carried by the spider 6d. The lower end of the bolt lil is squared for engagement by a socket wrench, or is otherwise formed for engagement with an operating tool, and is accessible through a sleeve it at the center of the grille 2d and filter 2t.

By turning the bolt 16, the shutter 6t: is shifted vertically to vary the proportions of fresh and room air. In the lowermost position as shown, only fresh air is supplied; in the uppermost position of the shutter only room air is supplied; in intermediate positions various mixtures of fresh and room air are supplied.

Figure 3 shows a somewhat difierent fixture,

with fresh air supplied through. the space above a false ceiling supported'below the true ceiling of the room by means such as hangers 82. Parts corresponding to parts in Figure 2 are indicated by the same reference characters increased by I 00.

In this fixture, cold water or brine is circulated through a cooling coil I32, which is arranged in the annularmouth between upper and lower parts I22 and I20. The centrifugal fan I30 in this case is a double fan, the lower part acting on room air coming up through a grille I24 and a filter I26 held by spring latches I21. The room air is controlled by shutters lillconnected by a bar I68 for common actuation by a pull rod I10 extending down far enough for convenient operation.

The upper part of the fan I30 acts on fresh air brought in through a duct I48 arranged in the space above the false ceiling 80, under the control of a shutter shown as a butterfly valve 260 operated by a vertical operating rod 210.

Both fixtures may also, if desired, be used as lighting fixtures, as explained in my application No. 32,256, filed July 19, 1935 and which has become Patent No. 2,069,816, Feb. 9, 1937.

While two illustrative embodiments have been described in detail, it is not my intention to limit the scope of the invention to those particular embodiments, or otherwise than by the terms of the appended claims.

I claim:

1. An air-conditioning fixture comprising upper and lower parts connected in spaced relation to provide an annular mouth opening approximately horizontally outward in all directions,

a fresh air supply connected to the central portion of one of said parts, a room air intake provided at the central portion of the other of said parts, air-circulating means for taking air from said supply and from said intake and blowing it out in all directions through said annular mouth valve means between said parts for proportioning the relative amounts of fresh air and room air, and a cooling coil in the path of the air passing through said fixture.

2. An air conditioning fixture comprising a casing formed with a peripheral annular air outlet, air inlets in the top and bottom of said casing, one of said inlets being adapted to receive air from the space to be conditioned and the other to receive air from outside said space, means for circulating air through the casing, means in the casing for conditioning the circue .lated air, and a shutter shiftable between said inlets to control the proportions, of air taken in through said inlets.

3. An air conditioning fixture comprisinga casing formed with a peripheral annular air outlet, air inlets in the top and bottom of said casing, one of said inlets being adapted to receive air from the space to be conditioned and the other to receive air from outside said space, an annular centrifugal blower having an open center communicating on its opposite sides with said inlets respectively and discharging through said air outlet, and a disc shiftable axially through the center of said blower to control the proportions of air taken in through said inlets.

LACHLAN w. CHILD.

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