US2788648A

US2788648A - Air conditioned telephone booth

Info

Publication number: US2788648A
Application number: US353264A
Authority: US
Inventors: Percival H Sherron
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-05-06
Filing date: 1953-05-06
Publication date: 1957-04-16
Anticipated expiration: 1974-04-16

Description

s E n m m MR o V n n M A w 3 H 4 N NY C B a v P g April 16, 1957 P. H. SHERRON AIR CONDITIONED TELEPHONE BOOTH Filed May 6 1953 FIG. 2.

United if'tates Patent AIR CONDITIONED TELEPHONE BOOTH Percival H. Sharron, Jamaica, N. if.

Application May 6, 1953, Serial No. 353,264

4 Claims. (Cl. 62-14tl) This invention relates to an air conditioned telephone booth.

It is an object of this invention to provide an air conditioning system for a telephone booth in which conditioned air is circulated within the booth during periods of use of the booth and in which the cooling air employed in the operation of the air conditioning system is drawn from the outside of the booth and returned to the outside of the booth after being passed through the elements rcquiring cooling.

It is a further object of the invention to provide a compartmented ceiling structure for a telephone booth in which there is mounted an air conditioning system.

It is a further object of the invention to provide an air conditioning system in which moisture condensed on the refrigerated coils is carried outside of the booth thus providinga reduction in humidity within the booth during the air conditioning period.

It is a further object of the invention to provide an air conditioning apparatus arranged to operate only during those periods when the booth is in use and the door is closed.

These and other objects of the invention will become apparent from the following description when read in conjunction with the accompanying drawings, in which:

Figure 1 is a perspective view of a telephone booth in.- corporating the invention;

Figure 2 is a perspective view showing the underside of the ceiling structure of the booth;

Figure 3 is a perspective view of the upperside of the ceiling structure shown in Figure 2 showing the arrangement of the air conditioning elements within the ceiling structure; and

Figure 4 is a diagrammatic showing of the electrical circuit involved.

In Figure 1 there is shown generally at M an assembled telephone booth including a ceiling structure 12. Figures 2 and 3 show perspective views of this ceiling structure removed from the booth. The ceiling structure includes a lower pan indicated by thenumeral 12 and

upstanding sides

14, 16, 18 and 20 connected thereto. Brackets 13 are connected to the

upstanding sides

14 and 18 and provide for the mounting of the ceiling structure in the booth.

A pair of

partition plates

22 and 24 extend across the interior of the ceiling structure from the front toward the rear of the booth. The partition plate 22 extends from the front flange 16 to the rear flange 2d. The partition 24 extends from the front flange and terminates at 26 at a distance from the rear flange 20. The two partition plates serve to divide the ceiling structure into compartments forming two passages.

A first of these compartments or passages is formed between the partition plate 22 and the

flanges

16, 18 and 20. This compartment is lined with a suitable insulating material 28, which may be, for example, in the form of glass wool bats. Mounted within this compartment is a refrigerated coil 3% formed of a conventional serpentine tube arrangement passing through heat conducting fins. An opening in the ceiling pan 12 at the forward end of this compartment is provided with louvers 32 and is adapted to admit warm air from the booth into the insulated compartment. A motor 34 and blowers 36 are positioned at the rear end of the insulated compartment and are adapted to draw warm air from the booth through the louvered opening 32, through the refrigerated coils 30 and to force the air out through conditioned air outlets 38. Each of these conditioned air outlets 38 is provided with a plurality of grills 4% which may be made adjustable if desired in order to adjustably direct the flow of conditioned air into the booth.

The second passage is provided by the space between the

plates

22 and 24 and the connecting space between the plate 24 and the flange 14 of the ceiling pan 12. The space between the

partition plates

22 and 24 is connected through an opening 42 in the flange 16 of the ceiling pan and a suitable flexible connector 43 to louvers 44 in the front of the telephone booth. A pan 46 is mounted in the space between the

partition plates

22 and 24 and is adapted by means of a passage 48 to collect condensate which forms on the refrigerated coils 36?. An illuminating lamp 5%) is mounted on the partition plate 22. A glass window 52 is mounted in the ceiling pan 12 below the lamp Sit to permit the passage of light from the lamp into the booth to provide booth illumination.

In the compartment between the partition plate 22 and the ceiling pan flange 14 there is mounted a conventional type of refrigerator compressor unit 54, a condenser coil 56 similar to the refrigerated coil 30 and a motor 53 driving blowers 60. The ceiling pan 12 is provided with a downwardly extending depression $5 for the reception of the compressor unit 54. The depression is provided in the corner of the booth above the telephone 80. Flexible air conduit lines are connected from the blowers 60 to outlet louvers 63 mounted in the front of the telephone booth.

Operation of the blowers 60 will draw air from outside of the booth through the inlet louvers 44 and through the compartment between the

partition plates

22 and 24 over the condensate pan 46 which is provided with a few coils 66 forming a portion of the condenser line which serves to heat condensate which has accumulated in the tray 46 in order to induce the evaporation thereof. The flow of air then passes over the illuminating lamp 5i cooling the lamp, and passes around the back end 26 of the partition plate 24. The flow of air proceeds to cool the compressor unit 54 and thereafter to pass through the condenser coils 56. The air passing through the condenser coils 56 carries off the heat accumulated by the refrigerating system. The air leaving the condenser coils 56 is forced through the outlet tubes as by the blowers 6t} and thence through the outlet openings 63 to the ex terior of the booth. Dummy louvers 64 are provided to balance the external appearance of the booth.

A switch '74, which is adapted to be closed when the telephone booth doors are closed, is provided to control the. supply of electric current to the apparatus described. A thermostatic control is provided in order to control the minimum temperature of the refrigerated coils 30. This thermostatic control includes a conventional liquid filled bulb positioned within the coils 3t) and connected by means of the tube 70 to a pressurev actuated switch 63 which serves to interrupt the flow of current to the cornpressor unit 54 when the temperature of the refrigerated coils 30 is below a predetermined value.

Within the booth there is shown a conventional telephone which is mounted above a suitable tray 82. An ash tray 84 is positioned on the tray 82 and is preferably recessed therein. A hood d6 extending outwardly from the wall of the booth is positioned above the ash tray and is connected by means of a conduit 88 to the chamber containing the blowers 60. It will be evident that by this arrangement smoke and fumes rising from the ash tray will be drawn through the conduit 88 and discharged to the exterior of the booth through the flexible lines oz and the outlet louvers 63.

The electrical circuit is shown in Figure 4. Power from power supply lines 76 passes through a master control switch 78 to lines 30. The door switch 74 is connected in one of these lines and subsequent to the door switch there is connected across the lines the ceiling lamp 50, the blower motor 34 and the blower motor 58. Also connected across the power lines 8i beyond the door switch 74 is the compressor unit 54 which is controlled individually by the thermostatically controlled switch 68.

It will be evident that when the booth is not in use and the doors of the booth are open there will be adequate change or recirculation of air within the booth, the relatively dense cooled air will flow out and fresh air will take its place. When the booth is in use the doors will be closed and the air conditioning unit will be in operation.

The refrigeration system shown is preferably a hermetically sealed capillary tube refrigeration system. However, it will be evident that various refrigeration systems may be employed and similarly various modifications may be made in the elements of the particular system shown. For example, the refrigerated coils and the condenser coils, which are shown as tubes carrying heat dissipating fins, may be replaced by press formed sheets resistance welded together providing passages between the adjacent sheets. Whenever the word coil is used herein with respect to either the condenser coil or the refrigerated coil,

it will be evident that any conventional type of heat ex-' change unit may be employed in place thereof and the term coil is considered to apply to any conventional type of heat exchanger construction. It will be evident that these and other modifications may be made to the embodiment of the invention disclosed herein Without departing from the scope of the invention as set forth in the following claims.

What is claimed is:

1. In a telephone booth including two side panels, a rear panel, a front door and means for mounting a telephone in one rear corner of the booth; a compartmented ceiling structure comprising a pan and including a downwardly extending depression in the pan in the vicinity of said one corner of the booth and means forming two passages above the pan, 2. first of the passages containing an air blower and a refrigerated coil and having an inlet for air communicating with the interior of the booth and an outlet for air communicating with the interior of the booth, the blower circulating air from the inlet, through the passage and the refrigerated coil to the outlet, and the second passage containing a refrigerator compressor unit positioned in said depression, condenser coils and a blower and having an inlet for air communicating with the exterior of the booth and an outlet for air communicating with the exterior of the booth, the blower circulating air from the inlet through the passage and the condenser coil to the outlet.

2. In a telephone booth, a compartmented ceiling structure including two passages, a first of the passages containing an air blower and a refrigerated coil and having an inlet for air communicating with the interior of the booth and an outlet for air communicating with the interior of the booth, the blower circulating air from the inlet, through the passage and the refrigerated coil to the outlet, and the second passage containing a refrigerator compressor unit, condenser coils, a collector for collecting condensate from the refrigerated coil, an illuminating lamp and a blower in serial arrangement therein and having an inlet for air communicating with the exterior of the booth at the front thereof and an outlet for air communicating with the exterior of the booth at the front thereof, the blower circulating air from the inlet through the passage and the condenser coil, past the lamp, over the condensate collector and to the outlet, and the ceiling structure including a light transmitting panel positioned below said illuminating lamp to provide for illumination of the telephone booth therein while heat from the lamp is dissipated to the exterior of the booth by said last mentioned circulating air.

3. In a telephone booth, a compartmented ceiling struc ture, the ceiling structure including a first compartment positioned adjacent to one side of the booth and containing a refrigerated coil, an inlet for air communicating with the interior of the telephone booth, an outlet for air communicating with the interior of the telephone booth and a blower for circulating air from the inlet through the refrigerated coil and to the outlet, a second compartment positioned centrally of the ceiling structure extending from the front toward the rear thereof and containing a lamp mounted substantially centrally thereof for illuminating the interior of the booth, a collector for collecting condensate from the refrigerated coil and a passage for air communicating with the exterior of the booth, and a third compartment positioned adjacent to the other side of the booth and containing a refrigeration compressor unit, condenser coils and a passage for air communicating with the exterior of the booth, means providing for the passage of air between the second and third compart- 'ments, and means circulating air through one of the air communication passages, through the last two mentioned compartments and through the other of the air communication passages.

4. In a telephone booth including two side panels, a rear panel, a front door and means for mounting a telephone in one rear corner of the booth; a compartmented ceiling structure including two passages, a first of the passages containing an air blower and a refrigerated coil and having an inlet for air communicating with the interior of the booth in the vicinity of the other rear corner thereof and an outlet for air communicating with the interior of the booth in the vicinity of the front thereof, the blower circulating air from the inlet, through the passage and the refrigerated coil to the outlet, and the second passage containing a refrigerator compressor unit, condenser coils and a blower and having an inlet for air communicating with the exterior of the booth and an outlet for air communicating with the exterior of the booth, the

blower circulating air from the inlet through the passage and the condenser coil to the outlet, and a conduit having one of its ends adapted to terminate above an ash tray adjacent to the telephone mounting means and having the other of its ends connected to said last mentioned air circulating means to discharge smoke rising from the ash tray to the outside of the booth.

References Cited in the file of this patent UNITED STATES PATENTS