US2122482A - Air conditioning apparatus - Google Patents

Description

July 5, 1938.

G. M. MARR ET AL AIR CONDIIT IONING APPARATUS Filed Jul 28. 1934 2 Sheets-Shed 1 ATTORNEY July 5, 1938. G. M. MARR EI'YAL 2,

AIR CONDITIONING APPARATUS Filed July 28. 1934 2 Sheets-Sheet 2 ORNEY Patented July 5, 1938 I UNITED STATES PATENT OFFICE AIR CONDITIONING APPARATUS George M. Marr, New York, and Arthur P. Marr, Brooklyn, N. Y., assignors to Air Conditioners, Inc., New York, N. Y., a corporation of Delaware Application July-28, 1934, Serial No. 737,383

2 Claims. (01. 62129) The device, the subject of this invention we term an air conditioning apparatus and for the reason that it performs a number of the functions that are important in air conditioning.

Air conditioning in its broadest sense, consists of a number of treatments depending of course upon the initial condition of the air and the conditions required at the time that the conditioning or treatment is completed.

quired for operating the blower motor and as it is entirely portable, it is provided with a casing formed in two major parts. The part indicated at l we willrefer to as the upper casing, and the part indicated at 2 we will refer to as the lower casing.

Within the upper casing I we arrange a container 3, which maybe adapted to receive solid CO2 sometimes referred to as dry-ice, or water- The present apparatus and t one which we ice or even cold water, and this container is prowere about to describe will accomplish a number vided with an efficient cover or su t n of the desired purposes, such for instance as upon a gasket 5, the gasket in turn resting upon filtering the air if that is desired, of dehumidifya lip or flange 6 of the container 3. We desire ing the air, of cooling 11; during dehumidmcation that this container be not in contact with the and circulating it in a desired direction after it Outside casing I and for that reason the 13 has been filtered, cooled and dehumidified. Our tamer 3 is insulated from the casing I by h filtering is not in this instance air washing, butstrips 75 and 8 and .9150 by the insulation 9 the primary filtration i for t purpose of which surrounds the three sides of the conmoving, the larger particles of dust or foreign miner e ove 4. may be hinged as sugmatter. The dehumidification also accomplishes gested at Secured to the bottom of the container 3 and extending downward in'the casing l, are a plurality of fins or plates. These fins or plates are relatively thin and are spaced apart a desired distance which will of course be determined by the size and capacity of our device. In Figure 1 a plurality of these plates are shown, only one of which is indicated by the reference character II and it will be noted in Figure 2, that these plates while extending more than the full width 3 of the container 3, are provided with a slot l2 into which the uppper portion of the fan or blower I3 is introduced. The object of this construction is best stated as follows:

The plates II are secured to the bottom of the container 3 in any manner, such as riveting as suggested at H, soldering or in the manner shown in Figure 5. These plates conduct the heat from the air passing thru the fan to the refrigerant purification as in the dehumidification cool dry surfaces are provided for the removal of the. moisture or humidity and so in turn remove much of the foreign matter and smaller dust particles in the air. The circulation is not only for the purpose of causing air to' contact with the cooling and dehumidifying means, but is also for the purpose of distributing the air and we provide adirectional device for the breaking of the air streams as and when. desired and thus we have described the objects of the invention, the construction of which will be set forth in the specification which'follows and the accompanying drawings should be referred to for a complete understanding of the specification.

In the drawings.

Figure 1 is a fractured front elevation of our device;

Figure 2 is a side elevation generally in section of the completed device. within the container 3 or as it might best be said, Figure 3 is an enlarged view of a damper the plates are continually retained cold by the mechanism. I refrigerant, so therefore air passing between the Figure 4 shows an enlarged view of th h tt plates will be cooled to such an extent that the mechanism. a humidity in the air will be deposited upon the Figure 5 is a fractured sectional view showing 'p t s t dr p away't r m as t m ture 5 a modified construction of a part.

Figure 6 shows a device of a somewhat modified construction and is a fractured side elevae builds up on the plates. The recess I2 in all of the plates makes it possible to provide an overhanging means l'l' at the intake side of the fan tion, and or blower, pre-cooling to an extent the air drawn Figure .7 is a front elevation of the fins or prointo the device and materially increasing the eflijections. ciency of the device, both as an air cooler and a dehumidifier.

At the intake side of the fan we provide a screen l5 which'may or may not be an air filter as shown in Figure 6. We prefer however that it Similar reference numerals indicate like parts in all the figures where they appear.

Our air conditioning device is entirely portable except that an electrical connection is reshould to an extent at least filter the air. Forward of the fan is a baflie shown at E5 and intended'to direct the air out of the horizontal to a verticalcourse, changing the direction of the air flow may and probably does reduce the speed and volume of the air, but it also accomplishes a more important purpose, it insures that all of the air discharged from the fan will pass between the fins or plates II and will because of the peculiar shape of the plates, remain in contact therewith an appreciable period of time, with the result that great cooling and dehumidification results.

Leaving the fan I3, the air travels upward directed by the baflie l6 and between the plates II and is discharged through a shutter aperture II. In both figures the shutters are shown closed, but the dotted lines i8 in- Figure 2 suggest that the shutters may be opened to direct the air as desired, the shutters being operated by the handle l9, operating a link to which all of the shutters are connected by means of bell crank levers as shown at M, so that the shutters operate simultaneously from the single lever l9.

The upper portion of the casing i is supported upon the lower casing member 2 as shown in Figure 2, but is insulated from the lower casing by a gasket 22 not only for the purpose of conserving energy, but for the purpose of quieting the device by dampening the mechanical vibrations. The lower casing member 2 is provided with a shelf 23 to which the upper casing member i is secured. The lower casing member projects upward slightly above the juncture of the two casings and the space 24 between these two basings allows any moisture of condensation that might collect on the upper casing to pass down- Ward to the lower casing 23, from whence it is allowed to drip into a suitable container. If dry-ice is used as the refrigerant, it is desirable to introduce air into the refrigerant container 3 to insure controlled sublimation of the dry-ice.

At 25 we show a channel and Within the container dand local to the upper end of the channel is an adjustable damper member 26 as shown in Figure 3 and which controls the passage of air through the channel and into the container 3. The discharge of the gas is through the pipe 2! and this pipe is controlled by a valve 28, which valve will be allowed to remain open if d e is employed, but will be closed it water-ice is employed, except at that time that it is desired to draw off the water.

At 29 we show a container for the water of condensation or deh'umidification. This container is a drawer arranged in the lower casing member 2 and slideable upon suitable supports 30 and 35. This drawer is provided with a plurality of splash bafles as indicated at 32. The water from the ice melting in the container 3 may be discharged into the drawer 29 by operation of the plunger operated valve 28. The switch 38 is intended for the control of the fan motor 34 and to increase the flexibility and the satisfactory usefulness of our device, the fan motor may be a two speed or a multiple speed motor as suggested at the switch it.

May we call attention to the angular arrangement of the upper front plate at, the arrange! ment of which is not only for appearance, but is for the purpose of reducing discharge friction and for the further purpose of increasing the angles to which the shutters may direct the air.

. May we also call attention to the continuation of the discharge pipe -2l which is carried back and forth behind the lower edges of the fan l3.

When water ice is used possibly no appreciable cooling of the air will result from this circuitous arrangement of the pipe 21, but when dry ice is used the passage of the gas through this pipe will assure that all of the cooling effort contained even in the gas, will be removed and thegas will be discharged only after its usefulness has been exhausted.

To obtain the highest possible efficiency, a direct metallic contact of the plates H with a refrigerant is desired. We may accomplish this as previously stated, but another way and that shown in Figure 5 is to have the plates ll actually pass through the bottom of the container 3. Each plate is then bent over at the top as indicated at b and may then be secured in place by soldering, thus'the refrigerant rests immediately upon the plates and the maximum cooling effect is obtained.

In Figure 6 we show a device of somewhat difierent construction. In this device the casing 31 is continuous, that is it is not a two part casing. The front panel 33 is however arranged at an angle at the point where the air'is discharged. The fan or blower 39 in this construction is arranged at an angle and this makes it possible to employ continuous fins or plates as shown at 40, these plates being secured to the refrigerant container 4! in any manner desired, but it is very desirable that the connection between the fins or plates 40 and the refrigerant container, be a good thermal conducting joint.

The-plates or fins, an end elevation of whiph is shown in Figure 7, are corrugated as indicated at 42, and while such corrugations will slow down the passage of air to a slight extent, they will also assure that the air will contact with the plates and that no air film will form on the plates. As a. result of recent experimentation, we are led to believe that corrugated fins or projecting plates are very desirable and for that reason they may be employed with the device shown in the earlier Figures land 2. The fan or blower motor 39 when arranged at an angle should be provided with a'thrust bearing as indicated at 3. v

The space M between the refrigerant container 8! and the outer wall of our cabinet is in this construction closed by means of a member of a desirable shape. In closing this space we depend upon dead or impounded air as the insulating means, and such insulating means would be arranged at all sides of our reirigerant container ll except the bottom thereof. At it we show an air filter consisting of two sheets of screen with a filtering medium arranged therebetween. This filtering medium may be curled hair, steel wool or any other type of filter and isshown to indicate that a filter may well be employed with our device.

The drain pipe d? is in this construction arranged in front of the blower 39 and between the blower and the fins or plates ti) and may be cir-- cuitous in this space in any direction, and while the arrangement of this tubular member ill is desirable with water-ice, it is particularly desirable if dry-ice is used, as it assures that the gas of sublimation will be retained until all of its desirable cooling effect is removed therefrom.

In Figure 1 we show one horizontal run or" the drain pipe extending behind the lower portion of the fan blades, but in this Figure 6 we indicate that we may have aplurality of horizontally extended pipe lines, in fact we have shown four horizontal pipes 49 and 50 are connected atone end by means of a short length of pipe or nipple 53, and a longer pipe S4 connects one end of the horizontal pipe 50 with the next successively horizontal pipe -l.. v

In the short nipple '55 which connects the pipe 5| and 52, we may introduce a riser 56 arranged parallel to-the drain pipe 41. This riser extending upward into the refrigerant chamber 41 When water-ice .is used as the refrigerant or when a liquid is contained in our device, the valve 28 will be retained closed and under this conditionthe water from the ice will circulate through the pipes 41, I! to 56 and we have found that when the air delivered by the fan or "blower 39 is quite warm, a very active circulation and recirculation will take place in these p p When dry-ice is used as the refrigerant, we recommend that the uppermost open end of the pipe 56 be closed :and the valve Ii-allowed to remain open. assure that the gas of sublimation is retained in the pipe run for a suitable length of time as above referred to.

As this device shown in Figure 6.:ls smaller and somewhat lighter than the device shown in Figones 1 and 2, we may omit the casters or rollers shown in Figures 1 and 2 and substitute balls or ball shape metallic members or even rubber foot pieces as shown at 48; The operation of this device is in all respects similar to the device previously described. However even though .a number of structural changes or modifications are made,

they are intended to increase rather than decrease the efiiciency.

The plates It may be extended downward for a greater distance than that shown. 7

The shape of our device may be changed at will and the parts arranged to-accommodate such changes.

We have shown but four shutter plates 18. but the number of plates may be increased or decreased as may the area thereof.

Having carefully and fully described our invention, what we claim and desire to obtain is:

1. An air conditioner'comprising a casing, a blower arranged therein, a refrigerant container arranged therein, a plurality of heat conducting plates secured to said refrigerant container and projecting into the path of both the intake and exhaust of said blower.

2. An air conditioning device comprising a container, an air blower arranged therein, a refrigerant container within said casing and insulated therefrom, a plurality of thermal conductors secured to said refrigerant container, means for directing the air from the blower in contact with said thermal conductors, and means for directing the air upon its discharge from the said casing, and means for collecting the water of dehumidification from said thermal conductors and a tubular member connected to said refrigerant container and passing through certain of said conductors.

GEORGE M. MAR-R.

ARTHUR P. MARR.

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