US2115720A - Air conditioning apparatus - Google Patents

Description

M y 1938. R. E. HOLMES AIR CONDITIONING APPARATUS Filed Aug. 24, 1935 2 Sheets-Sheet l Fla. 2.

INVENTOR RlcHaRu E. HoLML-a.

y 3, 1938. R. E. HOLMES 2,115,720

I AIR CONDITIONING APPARATUS Fil ed Aug. 24,1935 2 Sheets-Sheet 2 i I I v I r 1 1 I 1 I r r I n I a ATT NEY Patented May 3, 1938 2,115,720 AIR oonm'rromo. APPARATUS Richard E. Holmes, Springfield, Mass.,assignor to Westinghouse Electric & Manufacturing Company, East Pittsburgh, Pa., a corporation of Pennsylvania Application August 24, 1935, Serial No. 37,667

8 Claims.

My invention relates to air conditioning apparatus, more particularly to a cabinet or casing for a unit air cooler of the suspended type, and it has for an object to provide improved apparatus.

Another object is to provide a simple and inexpensive cabinet construction.

A further object is to provide a cabinet that may be readily assembled on the unit air cooler after the remainder of the unit is installed, thereby minimizing danger of defacing the cabinet.

Still another object of my invention is to provide a cabinet comprising wall members secured in position with minimum externally visible securing means.

In accordance with my invention, 1- provide a supporting structure for the air treating element adapted to be installed with most of the cabinet nally visible. The upper and lower edges of the) vertical wall member are preferably provided with vertical projections adapted to be received in openings in said inwardly extending flange portions. The bottom wall member may be supported on the supporting structure, as by providing the latter with flanges engaging in the channels formed by the flanges on the bottom wall member, and the other wall members may rest in superimposed relation on the bottom wall member.

These and other obje ts are effected by my invention as will be apparent from the following description and claims taken in connection with the accompanying drawings, forming a part of this application, in which:

Fig. l is an exploded perspective view of the cabinet;

Fig. 2 is an end view, in section, of the complete unit air cooler;

Fig.3 is a detail view, in vertical section, showing the interlocking relation between top wall and the vertical wall member; and, V

' Fig. 4 is a front sectional view.

Referring to the drawings in detail, I show a unit air cooler having a supporting structure, which is preferably in the form of an inner casing Ill. The inner casing includes a top wall ll, side walls l2, a bottom wall l3 and a front wall It, and

it is open at the back. Adjacent'walls are secured to each other in any suitable manner, as by bolting a flange on one wall to the adjacent wall.- In the illustrated embodiment, outwardly extending flanges I5 are formed along the rear half of the top and bottom edges of the side walls I 2 and are secured to the top and bottom walls H and i3 by bolts l1. Similarly, the front edges of the top and side walls, It and i2, are formed with outwardly extending flanges it which are secured to the front wall ll.

Cooling coils l9 are mountedin the inner casing J0, the several tubes extending through the side walls l2. The front wall it is formed with a circular opening 2i, and a fan 22, driven by a motor 23, is disposed substantially in the opening 2| for circulating air forwardly therethrough. Four bolts 24 are secured to the top wall II by means of nuts 25 and extend upwardly forattachment to a ceiling or other structure from which the unit is suspended and supported. The bottom wall i3 is extended beyond the front and sidewalls and formed with an upwardly extending flange 26 at each edge, thereby forming a drip pan to collect moisture condensed from the air.

The unit air cooler is enclosed by an outer casing or cabinet 21 comprising a bottom wall 28, a top wall 29 and a vertical wall member 3| providing outer side walls 32 and a front wall 33, all disposed in spaced relation to the respective walls of the inner casing. These walls may be made of thinner metal than the inner casing and provided with an exterior decorative finish. A rear wall 34,

which may be considered as part of the outer casing, closes the back of the unit. The rear wall 34 is bolted at the top to a flange 35 formed at the rear edge of the inner top wall H, and it is secured by screws 36 to a wooden block 31 disposed adjacent the rear edge of the bottom wall i3.

The rear edges of the side walls l2 and the bottom wall l3 of the inner casing are spaced from the rear wall 34 providing passages for flow of air. The inner top wall II is formed with with respect to the bottom wall member.

and are formed with flanges 45 projecting horizontally into the channel interior of the flanges 42, thereby supporting the outer bottom wall 28. The outer top wall 29 is similarly formed with downwardly and inwardly extending flanges 46, the inwardly extending portions being indicated at 41. The outerside and front walls, 32 and 33, are formed by the U-shaped, vertical wall memher at resting on, the flange portions 43, the lower edge of the vertical wall member being formed with horizontal flanges 43 which rest on the flange portions 43; Said lower edge is also formed with downwardly projecting lugs 49 adapted to fit in openings or recesses formed in the inwardly extending flange portions 43,

whereby the vertical wall member is positioned The outer top wall 29 is adapted to rest on the vertical wall member, the latter being provided with inwardly extending horizontal flanges 52 at its upper edge,- on which the inwardly extending flange portions 41 rest directly. The upper edge ofthe vertical wall member is also provided with lugs 53 projecting upwardly through openings or recesses 54 in the flange portion 41, as shown in detail in Figure 3.- The outer top wall 29 is also formed with openings 55, through which the bolts 24 extend.

The outer front wall 33 is provided with a rectangular outlet opening 56 opposite the outlet opening 2! in the inner front wall l4. A rectangular collar 51 extends inwardly from the edges of the openings 56 to the inner front wall, 14; providing a discharge passage 58 between the outlet openings 2| and 51, and separating such passage from the remainder of the spaces between the inner and outer casings. Adjustable louvers 59 are pivotally mounted in the collar 51 for directing the discharged air in the desired direction, and also serve to conceal the fan to an extent dependent upon their position. The opening 56 and the collar 51 are square, so that said collar may be installed with the louvers extending either vertically or horizontally as desired. The collar 51 has a flange 6| engaging the front wall 21. I

When installing the unit air cooler, the outer top wall 29 is first placed over the inner casing, the bolts 24 being extended through the openings 55. The inner casing, carrying the air treating elements, such as the fan and the cooling coil, is then suspended in the desired position by means of the bolts 24. The outer bottom wall 28 is then positioned by sliding the same rearwardly with the channels formed by the side flanges 42 engaging the flanges 45. The vertical wall member is then moved downwardly into place, the lugs 49 entering the recesses 5!,

The top wall 29 is then brought down onto the vertical wall member, the lugs: 53 entering the recesses 54. Nuts 62 maybe turned down on the bolts 24 to engage the top wall 29, whereby the vertical wall member is held securely in place between the outer top and bottom walls;

In the operation of the unit the fan draws air inwardly through the several groups of louvers 4 I around the rear edges of the inner casing, and then forwardly through the coils IS, the fan 23 and the outlet passage 58.

From the above description it will be seen that I have provided a cabinet, the members of which are connected together byv interloclnng means that are not visible externally. It will also be noted that most of the walls may be positioned after the supporting structure is installed, so

1. In a casing structure, the combination of a chassis or supporting structure, bolts attached to and extending upwardly from the chassis- ,whereby the latter may be suspended, a top wall having openings through which said bolts extend, vertical walls, a bottom wall, means for detachably mounting said vertical walls and said bottom wall on said chassis after the latter is installed,

, and concealed means for interlocking the upper edges of the vertical walls with the top wall upon downward movement of the latter. I

2. Ina casing structure, the combination of a chassis or supporting structure, bolts attached to and extending upwardly from the chassis whereby the latter may be suspended, a top wall having openings through which said bolts extend, a bottom wall, means for detachably securing said bottom wall to said chassis after the latter is installed, vertical walls, means for positioning said vertical walls after said chassis is installed including concealed means for interlocking the lower edges of the vertical walls with the bottom wall, and concealed means for interlocking the upper edges of the vertical walls with the top wall upon downward movement of the latter.

3. In a casing structure, the combination of an innei: casing; said inner casing having flanges extending horizontally from the lower edges of two opposite sides thereof; and an outer casing comprising a bottom wall member, a second wall member providing front and side walls, and a top wall member, said bottom wall member having flanges at three edges thereof extending upwardly and then inwardly to form channels and being adapted to be mounted on the'inner casing by sliding the same horizontally with the firstmentioned flanges entering two opposite channels of the bottom wall member,-.said top wall member having flanges at'the three corresponding edges thereof extending downwardly and then \inwardly, the inwardly extending flange portions of the top and bottom wall members having slots therein, said second wall member having pro?- jections at its upper and lower edges registering .with and adapted to be inserted in said slots,

whereby said outer casing may be assembled without visible attaching means.

4. In a casing structure, the combination of a supporting structure; and a casing for enclosing the. supporting structure and comprising a bottom wall member, a second wall member providing front and side walls, a top wall member, said bottom wall member having flanges at three edges thereof extending upwardly and then inwardly, said top wall member having flanges at the three corresponding edges thereof extending downwardly and then inwardly, and concealed means for interlocking the inwardly extending flange portions of the top and bottom wall members with the upper and lower edges of the second wall member, respectively, upon relative vertical movement of said wall members.

5. In a casing structure, the combination of a supporting structure having flanges extending horizontally from the bottom thereof on two opposite sides; and an outer casing comprising a bottom Wall member, a second wall member providing front and side walls, and a top Wall member, said bottom wall member having flanges at three edges thereof. extending upwardly and then inwardly to form channels and being adapted to be mounted on the supporting structure by sliding the same horizontally, the fianges'on the supporting structure entering two opposite channels of the bottom wall member, said top wall member having flanges at the three corresponding edges thereof ext-ending downwardly and inwardly, the inwardly extending flange portions of the top and bottom wall members being formed to receive upper and lower edge portions of the second wall member upon relative vertical movement of the wall members, whereby said second wall member is supported upon the bottom wall member and retained in position between the top and bottom wall members.

6. In a casing structure, the combination of a chassis, a bottom Wall, means for connecting the chassis to a structure for supporting the chassis therefrom independently of the bottom wall, means for detachably mounting the bottom wall on the chassis by a horizontal sliding movement, a U-shaped vertical Wall member comprising front and side wall portions, a top wall, and interlocking means for positioning said vertical wall member on said bottom wall and said top wall on said vertical wall member, said interlocking means being concealed when said vertical wall member and said top and bottom walls are mounted.

'7. In a casing structure, the combination of a chassis, means forconnecting said chassis to a structure for supporting the chassis therefrom,

said chassis having horizontally projecting flanges at the bottom thereof, a bottom wall having upwardly and inwardly extending flange portions adapted to engage said flanges upon horizontal sliding movement of the bottom wall, a U-shaped vertical wall member comprising front and side wall portions and having downwardly extending projections at the bottom adapted to engage the inwardly extending flange portions of the bottom wall upon downward movement of the vertical wall member, and a top wall having downwardly and inwardly extending flange portions, said vertical wall member having upwardly extending projections at the top thereof adapted to engage with said inwardly extending flange portions of the top wall upon downward movement of the latter.

8. In a casing structure, the combination of a chassis, a sheet metal casing enclosing the chassis and including a top wall having flange portions, vertical walls, and a bottom wall having flange portions, means for connecting the chassis to a structure for supporting the chassis therefrom independently of the sheet metal casing, means for detachably securing said bottom wall to said chassis after the latter is installed, means for positioning said vertical and top walls after said chassis is installed including means for interlocking the top and bottom edges of the vertical walls with the flange portions of the top and bottom walls, respectively, said inter-

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