US343035A - kauffeld - Google Patents

Description

(No Model.) i 2 Sheets-Sheet 1; E. KAUFFELD.

COOLING AND REFRIGERATING APPARATUS.

No. 343,035. Patented June 1, 1886.

N. Ferias Phmmmgnvnnr, Wan-mmm, o. c,

(No Model.) 2 Sheets-Sheet 2.

E. KAUFFELD.

GooLING AND RBPRIGBRATING APPARATUS. No. 343,035. Patented'Ju'ne 1, 1886.

NITED STATES PATENT Ormea..

ELIAS KAUFFELD, OF PITTSBURG,PENNSYLVANIA.

COOLING AND REFRIGERATING APPARATUS.

SPECIFECATION forming part of Letters Patent No. 343,035, dated June 1, 1886. Application filed September 9, 1885. Serial No. 176,575. (No model) To all whom, it may concern:

Beit known that I, ELIAS KAUFFELD, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Penn- Sylvania, haveinvented certain new and useful Improvements in Cooling and Refrigerating Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled iu the art to which it appertains to make and use the same.

My invention has relation to cooling orrefrigerating apparatus, and has for its object the provision of a comparatively simple and inexpensive apparatus which maybe applied to ice-boxes or other cooling-chambers now in use, and which will, by the mechanical conipression of air and the subsequent cooling and expansion ofthe same, and with the expenditure of but little power, quickly reduce the temperature of an ice box, vessel, or chamber with which it is connected.

In carrying my invention into effect I propose to force the atmospheric air into a box or vessel having a surrounding wateijacket, and, having produced a sufficient degree of pressure within said vessel, allow the com pressed and cooled air to escape suddenly and expand either directly into the chamber 'or vessel which is to be cooled or into suitable pipes arranged within the same. As au additional means for securing the desired reduction of temperature in the refrigerati iigchamber, I propose to cause an attenuation of the air within the refrigerating chamber or ves- Sel or in the air-conducting pipes arranged therein, and to this end I apply to the exit of such chamber, or the pipes therein, a suctionpump of suitable construction.

Having the above objects in view, my in ven tion consists in the novel construction, combination, and arrangement of partshereinafter 'fully described and claimed.

Referring to the accompanying drawings, Figure l is a vertical sectional View of a refrigerating-chalnber with my improved aircooling apparatus connected therewith; Fig. 2, a top View of the same.

A designates the refrigerating chamber, which may be of any desired or suitable forn1- as, for instance, an ordinary cooling-box, a refrigerator-car, or,in fact,any form or design of chamber wherein articles or materials are to be cooled. Around three sides of the chamber A, the door of the chamber being on the fourth side, I place a continuous line of serpentine pipes, a a a, which enter the chamber at c and leave the same at a?. Connected to the exit end a2 of the pipe a is a suction-pump, H, which may be of any desired form and operated either by hand or power, as may be found most desirable. Y l

B designates the air-cooling chamber, which may be arranged at any desirable point in the vicinity of the refrigerating chamber, but

which for facility of illustration Ihave shown as being placed upon the top of said chamber. Said box consists of two shells, B B2, placed one within the other, the outer shell, B', being l of iron or other suitable material, and the inner shell, B2, being for the purpose of securing a rapid conduction of the heat from the air, of copper or other good conductor of heat, and having rounded corners, as shown, so as to withstand the pressure of the air. The inner shell is mounted upon legs I I), leaving a water-space, C, all around, and is connected to a pressure-gage, I), by a pipe, d.

E designates a water-supply pipe leading into the space O, and F au overflow-pipe at the opposite end of the water-space, the former pipe dipping down nearly to the -bottom of said water-space,while the latter has its mouth vnearthc top of the same, so as to secure a p'roper circulation of water around the shell B2. A diain-cocl{,f,.is placed near the bottom of the water-space, so as to permit `of drawing olf the water when for any reason it is desired to empty the shell B, a suitable cock, e, being placed in the water-supply pipe E, so as to shut off the supply when necessary.

G designates a pi pe which leads from the interior of the shell B'l through the water-space C, and outside the latter is divided into two branches, G G2, each provided with a cut-oil' valve or cock, G. The branch G is connected directly with the pipe c, while the branch G leads direct] y into the i nterio'r of the refrigerat- Y ing-chamber.

Upon the pipe Ga govcrnouvalve, g,hav1ng a lever, g, and weight 921s arranged, and by means of Said governor-valve the amount of ICO From the above description it will be seen that the air entering the refrigerating-chamber A can either be passed through the pipe a or dispersed throughout the chamber, or both simultaneously, in either case being attenuated and drawn ofi' by means of the suction-pump H. A small door, k, is arranged near the bottom of the chamber A, for the purpose of permitting the entrance of a small amount of the external atmosphere should the temperature within the chamber A become too low.

Upon the top of the chamber A,and near the water-box,is placed a small double-acting airpump, I, having ingress-valvest' and egressvalves i at each end. 'Ihe egress-valves t" fi lead into pipes '52, which both connect with a pipe, k', which leads directly into the interior of the shell B2.

Ldesignates the pitman of the air-pump,con nected at one end to the piston-rod Z and at the other to a crank, on, upon a shaft, M. Said shaft carries at its outer end a fly-wheel, N,to

` which is attached the rod O of atreadle, P. A

handle, o,is also secured upon the same pin as the treadle, so as to allow ofthe fly-wheel heilig turned by hand or foot power, or both.

The suctioirpump H can be operated by a similar device as that by which the force-pump is operated, or either or both pumps may be operated by steam or gas engine or other available power; but in the drawings I have shown the suction-pump operated by means of a beltconnection from awheel, R, on the shaft M to a wheel, R', on the crankshaft of the suction pump.

Having described my invention, what I de sire to clainnand secure by Letters Patent, is-

l. In a refrigerating orcooling apparatus,the combination, with a force-pump and an air- 'reservoir connected thereto, said air-reservoir having a two branched pipe, one of said brano es leading directly into a cooling-chamber and the other branch being connected to a coil of pipes inclosed in said cooling-chamber, of an exhaust-pump having a two-branched connection leading, respectively, from said cooling-chamber and the coil of pipe contained in it, substantially as shown and described.

2. In a refrigerating apparatus, the combination, with a force-pump and an air-reservoir having double wal1s,and water inlet and outlet pipes leading thereto, and a pipe leading from the interior of said reservoir to a refrigeratingchamber, of a pressure-regulating valve on the air-pipe between the air-reservoir and the refrigerating-chamber, a line of pipe within the refrigerating chamber, and a suction-pump connected to the extremity of said last-named pipe, substantially as described.

3. In a refrigerating apparatus, the combination,with a forcepump, an air-reservoir, and a pipe leading therefrom and provided with a pressure-regulating valve, of branches leading from said air-pipe to a refrigeratiiig-chamber, one of said branches opening directly into said chamber, while the other is connected with a line or coil of pipe arranged within the chamber, substantially as described.

4. In a refrigerating o r cooling apparatus, the combi nation,with the force-pump I,the doublewalled air-reservoir B, having a water-jacket `completely around it, the air-pipes G G2, and

the governor-valveg,of the refrigerating-chamber A, the line of pipe a, arranged therein, and t-he suction-pu mp H,connected to said line of pipe, all constructed and arranged substantially as described.

In testimony whereof I have aixed my signature, in presence of two witnesses, this 5th day of September, A. D. 1885.

ELIAS KAUFFELD.

Titnessesz J oHN F. AcroHEsoN, A. A. MOORE.

Images