USRE19729E

USRE19729E - Air conditioning system and method

Info

Publication number: USRE19729E
Authority: US
Publication date: 1935-10-22

Description

Oct. 22, 1935. E. L. GARFIELD AIR GONDTONNG SYSTEM ANT M ET H [TD Original Filed Nov. 18,

BY h1 s ATTORNEYS.

Ressued Oct. 22, 1935 UNITED STATES PATENT. OFFICE 19,729 AIB CONDITIONING SYSTEM AND METHOD tured ice.

Edward L.

lee

Serial No. 496.424, November 18, cation for reissue Ap al No. 1,987,188,

and method for condition trolling its Garfield, Scarsdale, N. Y., Air Conditioning Company, Ine., N. Y., a corporatie Origin assigner to New York,

n of New York dated January 8, 1935,

1930. Appliril 12, 1935, Serial No.

9 Claims. (Cl. 62-176l n general to a system ing air, that is, contemperature and humidity.

m employing natural One of the objects of this invention is the provision of an apparatus and tioning air,

ethod for condiice or manufac- A further object of the invention is the provision oi' apparatus and method employing natmanufactured ice in which water is ural ice or allowed to before it is sprayed the provision of appara the warmest water, af an amount approximately eq flow over from the melting ice.

A still further object of the provision or such a system and trolling the amount around the reduced in of water ice as the ice melts order to maintain perature of the spraying water. A still further object of this provision with the same apparatus of of conditioning air at such times as or circulate around the ice into the incoming air, and tus to discharge to waste ter spraying into air, in ual to the water invention is the method for coniiowing over or and its surface is the proper teminvention is the a method its relative humidity, vapor pressure and the like are such as to produce the culating and spraying w ing the water.

An imprtant object of desired cooling eifect by cirater into it without coolthis invention involves the control of the amount of water owed over the surface of the ice be air to be conditioned, so will be at substantially the quantity of Another ice diminishes. important object of the provision of thermostatic trolling the mec the amount oi retu to the receptacle of the These and other objects as the following disci this invention.

This invention resi combination, construction, tive location of as will be set fo Referring to a sectional diagrammatic view of this invention.

attempts to employ natural ice or Previous manufactured ice in for use in rooms, and indeed the necessity for compensating fore it is sprayed into the that the cooling water` the same temperature as this invention is means for conhanical valve which proportions rn water going ice chamber.

to the ice and will appear from osure are secured by means of des substantially in the arrangement, relaparts, steps and series of steps, rth in detail below.

the drawing, the single ligure is of the apparatus cooling and conditioning air for any use, has

lor users did not realize for the reduction in area of the ice as it melted, and hence were not able to get uniformly conditioned air, If they did realize this reason for not being able to get uniformly conditioned air, they conceived no means or method by which such compensation could be eiected.

- The general object of this invention is to provide an air conditioning that is humidifying and cooling, apparatus and method employing ice by which as the ice melts a uniformly conditioned air is produced.

The apparatus and method will best be understood by direct and detail reference to the drawing.

At I is shown the room or place the air of which is to be conditioned. It is of course apparent that the conditioned air may be used for any desired purpose. At 2 is an opening extericrly of the space into the open atmosphere, which is controlled by means oi a suitable shutter 20 arrangement 3 to vary the amount of fresh entering air. Air passes through this opening into a chamber l within which is mounted a suitable water receptacle 5. Projected into this chamber and through the water receptacle is a pipe 6 con- 25 trolled by a valve 1 and having a plurality of nozzles 8 directed into the path of the incoming air. The lower end of pipe 6 is connected to the discharge port of a suitable pump 9. The intake port of this pump is connected to pipe III. The 3o ice cabinet or chamber is shown at II, and is provided at the bottom with a water receptacle. The water receptacle is substantially divided into a large body and a smaller body I2 by means oi.' one of the walls of the ice chamber. This wall 35 is provided with a passage I3. The level of the smaller water body I2 is maintained at a predetermined point by means of pipe I4 which delivers into a drain. Within the ice chamber Il is a perforated platform i5 upon which the ice 40 rests. It is noted that pipe iIl projects into the large water body in the ice cabinet. The cover i6 is removed when it is desired to place ice within the ice chamber.

The water receptacle 5 is connected by a pipe I1 which is submerged in the smaller water body I2. This pipe is provided with a control valve 2D and a mixing valve I9. The mixing valve can of course be o! any of the many well known forms. Pipe I1 and mixing valve I9 are connected by a branch pipe IB which extends into the ice chamber and is provided with a series of nozzles which spray water over the ice. Pipe 1 within chamber l is provided with a branch pipe 2l which connects to the discharge port of 65 a pump 23. This pipe is provided with a control valve 22. The second port oi' the pump 23 is connected by pipe 24 to a point below the water level in receptacle 5. The discharge end of chamber 4 is provided with a series of vertical eliminator plates 25 of any known construction by means of which the drops of water sprayed into the air are removed therefrom. The discharge end of chamber 4 is connected by pipe 26 to the intake port of a blower 21. The delivery port of this blower is connected by pipe 28 to the space I. A suitable damper or nap valve 2! is provided to control the amount and velocity of air being discharged into the space. Pipe 28 should discharge into the space I near the top thereof. An air pipe 30 connects space I near the bottom thereof with chamber 4. At the point where pipe 30 enters chamber I there is provided a suitable shutter valve 3| for controlling the amount of air delivered thereinto. In the operation of this

system air valves

3, 29. and 3| are adjusted so that the proper quantity of fresh air is.being delivered into the space I and the air in the space is being recirculated at the desired rate. When ice is to be used for reduction of temperature and humidity in the air, valve 22 is closed and pump 23 does not operate; valves 1 and 2li are open and pump 9 is operating as well as blower 21.

Water from the bottom of the ice chamber is drawn through pipe I0 by the pump il and delivered through pipe B to the sprays Il. Here the cooled water is sprayed into the fresh air entering the system through the opening 2, and the previously used air entering chamber 4 through pipe 30. The air passes through the spray and into discharge pipe 2G after passing through the eliminator or baille plates 25. With the system properly adjusted the air delivered by blower 21 into the space has the correct tempart or all of this returned water is shunted through the mixing valve in a quantity depending upon the adjustment of the mixing valve, into pipe I8 and is sprayed therefrom over the ice. This sprayed water iiows over the surface of the ice, melting it, thus becoming cooled, and then drains into the receptacle at the bottom of the ice chamber.

of this invention resides in the thermostatically or manually controlled valve I9 by means oi' which the water returning through pipe I1 is divided so as to be delivered to tank I2 and the adjusted to maintain a substantially constant temperature of spray water as the ice melts.

The invention does not involve per se the form device employed since any of the and the like. It is also pointed out that the thermostatic device can be placed adjacent the inlet of pipe 3l! or at any other point in the system suitable for effecting the proper control.

As the ice melts valve I8 is adjusted so that more and more water ows over the ice and less returns directly to receptacle l2. Thus as the quantity of ice diminishes by melting, the reduction in cooling surface is compensated for by controlling the amount of water sprayed thereover. Valve I9 may be adjusted so that none of the water returns to receptacle I2, but all of it is sprayed over the ice.

Another .feature of this system is that when the relative humidity, vapor pressure, etc., of the air is at values which will permit it. suilicient cooling and humidifying of the air may be obtained, without the use of ice. In this operation of the system valves I and 20 are closed, valve 22 is open and pump 23 is operated. Of course, blower 21 is also operating, although pump 8 is not in operation. 'Ihe water in receptacle 5 is then continuously circulated through pump 23 and sprayed into the air. 'I'he evaporation oi' the sprayed water is then sufficient to maintain a substantially uniform temperature condition. if the air being treated is at the proper temperature. relative humidity and vapor pressure.

From the above description it will be apparent that this invention recites certain principles which may be employed in other physical forms and carried out in other ways without departure from the invention. I do not, therefore. desire to be strictly limited to the disclosure as given for purposes of illustration, but rather to the scope of the appended claims.

What 1 seek to secure by United States Letters Patent is:

1. In an air cooling and conditioning system the combination comprising an ice chamber having a water receptacle therein, means for circulating water over the ice in the ice chamber, means for delivering the water from the water receptacle and spraying it into air conned to a flow path, means for returning the sprayed water to the receptacle and to the means for circulating water over the ice, and automatic means for controlling the amount of water returned directly to the receptacle and the amount of water returned to the means for circulating water over the ice to maintain a constant spray water temperature.

2. A combination as described comprising a space, the air of which is to be conditioned. said space having air inlet and outlet ports, a pipe system including a blower connected to said ports and to a source of fresh outside air, means for spraying water into the air as it circulates through said pipe system. means for collecting the sprayed water including a tank, an ice chamber having a water receptacle. means for delivering water from said receptacle to said sprays at a substantially constant temperature, a water spray in said ice chamber, and connections between said tank, said receptacle and said water spray in the ice chamber including control means for proportioning the amount of water delivered to the water spray ln the ice chamber and the water receptacle as the area of the ice is reduced by melting to maintain the temperature of the water going to the means for spraying water into the air substantially constant.

3. In an apparatus of the type described the combination comprising means for defining a path of air flow having an inlet and au outlet. a space into which the outlet discharges, means for spraying water into the air as it ilows thrcugzi said means for dening a path of air iiow, an ice chamber having a receptacle below the ice. means for returning the sprayed water, part for circulation over the ice and part to the receptacle, and means controlled by the temperature of the water sprayed into the air for automatically proportioning the parts circulated over the ice and returned to the receptacle.

4. In an apparatus ol the type described the combination comprising means for denning a path o! air ilow having an inlet and an outlet. a space into which the outlet discharges, means for spraying water into the air as it dows through said means for dening a path of air now, an ice chamber having a receptacle below the ice, means for returning the sprayed water, part for circulation over the ice and part to the receptacle, and thermostatic means for automatically proportioning the parts circulated over the ice and returned to the receptacle.

5. In an apparatus o! the type described the combination comprising means for dening a path of air ow having an inlet and an outlet, a space into which the outlet discharges, means for spraying water into the air as it flows through said means for defining a path of air flow, an ice chamber having a receptacle below the ice, means for returning the sprayed water, part for circulation over the ice and part to the receptacle, thermostatic means for automatically proportioning the parts circulated over the ice and returned to the receptacle. said thermostatlc means being subject to the temperature of the water going to the spraying means.

6. In a method of conditioning air, the steps of spraying cooled water into the air to be conditioned, dividing the water after spraying into two parts, delivering one part directly to a receptacle, spraying the other part over ice, varying the quantity of the part sprayed over the ice as the area of the ice is reduced by melting, collecting the part sprayed over the ice in the receptacle with the iirst part, the mixture in the receptacle providing the cooled spraying water for spraying into the air and providing it at a substantially constant temperature as the ice melts, and controlling the variation o! the amount of the part sprayed over the ice by'the temperature of the water being sprayed into the air '1. In an air cooling and conditioning system the combination comprising an ice chamber having a water receptacle therein, means for circulating water over the ice in the ice chamber, means for circulating the water from the water receptacle in heat exchange relation with air coniined to a flow path, means for returning the circulated water to the receptacle and to the means for circulating water over the ice, and automatic means subject to the temperature o the water going to the circulating means for controlling the amount o! water returned directly to the receptacle and the amount of water returned to the means the ice to maintain a constant temperature of the water delivered to the circulating means.

8. In an apparatus of the type described the combination comprising means for dening a path of air ilow having an inlet and an outlet, a space into which the outlet discharges, means for circulating water in heat exchange relation with theA air as it flows through said means for deiining a path oi' air flow, an ice chamber having a receptacle below the ice, means for returning the circulated water, part for circulation over the ice and part to the receptacle, and means controlled by the temperature of the water circulated in heat exchange relation with the air for automatically proportioning the parts circulated over the ice and returned to the receptacle.

9. In an apparatus of the type described the combination comprising means for deiining a path of air ilow having an inlet and an outlet, a space into which the outlet discharges, means for effecting heat exchange between water and the air as it flows through said means for deiining a path of air flow, an ice chamber having a receptacle below the icel means for returning the water, part for circulation over the ice and part to the receptacle. and thermostatic means subject to the temperature o1' the water going to the circulating means portioning the parts circulated over the ice and returned to the receptacle.

EDWARD L. GARFIELD.

for circulating water over i for automatically pro- 45