US1698440A

US1698440A - Refrigerating apparatus

Info

Publication number: US1698440A
Application number: US128893A
Authority: US
Inventors: Joseph W Jones
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-08-12
Filing date: 1926-08-12
Publication date: 1929-01-08
Anticipated expiration: 1946-01-08

Description

Jan; 8 E929.

J w. JONES 1,698,440l

REFR IHERATING. AIhPARATUS Filed Aug. 12. 1925 2 sheets-sheet 1".

vINVENTOR l y 'BY AT mRNEYs S, 3229. 1,698,440 J. w. JONES REFRI GERAT ING APPARATUS Filed Aug. l2, 1925 Sheets-Sheet 2 5V.; 3f

.l zo' O 9 4 wlmi-3555s O O 5f: INVENTOR ma 7- r se/171 WMZ/76.5 fZf//w La v BY w Z9 Z7 ATTORNEYS 30 plete apparatus;

j valve F in said pipe'l tor which iso Patented Jan. 8, 1929.

Ui'rED STATES 'PATENT OFFICE.

` :rosErH w. JoNEs, or NEW YoEE', N. Y.

BEFEIGEEATING Armures.

Applioationnled August 12, 1926. Serial No. 128,893.

This invention relates to refrigerating apparatus, an object of the invention being to provide an improved construction of pump, in combination with high pressure and low 5 pressure coils, which produces an apparatus where leakage is prevented and where highly eicient results are had.

With apparatus such as heretofore known the leakage of gas occurred. This is not only l0 objectionable but causes many apparatus to,

be discarded after installation, and so far as I have any knowledge no eectualremedy has been providei for this serious defect prior to my invention. p

It is therefore the primary object of my invention to provide an apparatus Where leakage is practically impossible and whichby reason of an improved construction and arrangement of parts an economical and hi hly elicient apparatus is produced. Y

ith these and other objects in view, the invention consists in certain novel features oic construction and combinations and arv rangements of parte, which will be more full Y hereinafter described and pointed out in t e claims. n In the accompanying drawings-- Figure 1 is a view in elevation, more or less diagrammatically illustrating 'my com- Figure 2 a view in vertical section through my improved lpump and its support;

Figure 3 is-a view in vertical section on se the staggered line l-- of 'Figure 2;

, Figure'4 is a top lan view of the ump.

= I shall rst describe the construction of lmy improved apparatus with particular reference-to the pump and shall then set forth e the o eration.

Re erring nioredparticularly to Figure 1 A represents e lbe on which my improved pump B is rigidly secured. C, C are high pressure -coils and D a low pressurecoil i vis connected by a ipe Ev with vthejhigli prespressure, reducing G represents a moeratively ,connected by a belt or other suitabxle mechanism with a combinasure coils, and avinl'a l v 45a tion flywheel and fan J, on the drive shaft K of the pump, so that this member J iunctions to ecol the pump and the high pressure coils. I, ci course, do not. limit lmyself to the precise arrangement ofthe parts-illustrated 5B and above described as this is ca able of .a

wide range or modification, but have illustrated Vwhat I believe to be :iQ-preferred v also ixedly secured to a vertically recipro# eating block 6 mounted in a guide 7 on the base 2. This block 6 has a slot 8 therein in which a laterally reciprocating block 9 is mounted, and an eccentric 10 on shaft K turns in the block 9 to impart the desired stroke to the piston. This stroke is relatively short and is positive inl both directions.

The lower portion of the base. 2 constitutes a chamber 11 Jfor lubricant 12, the

walls of the guide 9 being perforated as shown4 at 13k and 14 to permit the lubricant to splash and thoroughly lubricate the movable parts of the piston drive. wall of the chamber 12 is preferably ro vided with wick -lled openings 15 'which prevent undue splashing and allow the chamber to be supplied with lubricant when occasion may require.

A disc 1e is rigidly secured on the-lower The upper portion of the rod 5 and a flexible corrugated A tubular metal wall has its lower end secured to said disc, whereby saidlower end is closed, and its upper open end secured to the lower open end of the cylinder 1. The mean diameter of the iiexible wall 17. (whiclias experts in the' art will understand-is approximately the eil'ective diameter thereof) 1s practically the same as the/internal diameter of the cylinder 1 or the external vdiameter of the pisteil4. y. 18 indicates a head which is fixed to'tlie` upper end of the cylinder 1,'andy this "head is formed with inlet and exhaust valve chambers 19 and 20, respectively.v Spring' pressed check valves 2l` and 22 control oommunication between the chambers 19 and 20 and the cy1in'der'1,'and these lvalves are of relatively' large diameter so that when opened a relatively large passage' is provide for quick movement of the ofthe iston being short, suc .large'diameterpv' ves are desirable." I Y On the head 18 inlet and erhaust: valve thestroke k'

lili casings

23 and 24 are xed. These valve casings at their lower ends are in open communication with the chambers 19 and' 20, and at their upper ends are normally closed by

removable plugs

25 and 26, respectively.

The gas from the expansion coil D is ref turned to the valve casing 23 through the medium of a pipe 26', and a needle valve 27 located in the casing 23 controls a port 28 communicating with pipe 26. A second needle valve 29 located in the casing 24 controls a port 30 communicating with a pipe3l which connects said port with the high pressure coils C, C.

32 represents a by-pass pipe which communicates at its lower end with the interior of the cylinder 1, at a point which will not be covered bythe down stroke of the piston, and with a port 33 Iin valve casing 23. rIhis ley-pass pipe 32 is provided with acheck valve 34, allowing the flow of gas upwardly thereof but preventing any movement of the gas in the opposite direction, and a cut-oft' valve 35 is located in the pipe 32 above the check valve 34 for a purpose which will hereinafter appear.

rIhe flexible corrugated tubular metal wall 17 is filled to the desired level with oil 36, and I preferably employ castor oil which I nd to be eiiicient for the purpose. This oil acts as a seal for the piston and the ilexible wall does away with the ordinary packing so that there isno movement Whatever of the piston rod through any bearing which would be liable to leak. Furthermore, the

flexible wall, piston and the cylinder 1 form a chamber 37 which-is sealed against leakage as the flexible wall is fixedly secured to the cylinder and expands and contracts with the movement of the piston. Furthermore, the mean diameter of the flexible wall (which, as is welll understood by those skilled in the art, is approximately the effective diameter thereof), is practically the same as the diameter of the piston so that in the movement of the several parts there is no variation in thesize of the chamber 37. The only point where as may probably leak is around the packing of the piston 4 and such gas will pass into the chamber 37 and be returned to the now be explained.

The operation of my improved apparatus is as follows:

After installation it is of course necessary to remove the air in the system, and to accomplish this I close the port 30 through the medium of the needle valve 29 and remove the plug 26. The pump is then operated to cause the iston 4 to reciprocate and this movement ofp the piston induces a suction throughout the entire apparatus to draw the air past the valve 29 and `force the same past the valve 22 to the atmosphere. This pumping operation is continued unsystem as will til the air is removed, and then the plug 26 is returned to its former position and the needle valve 29 opened. During this initial operation of the pump there is a possibility that portions of the oil 36 may be drawn through the pipe 32 and the cut-oil' valve 35 is provided to reduce the passage throughl the pipe 32 or entirely close the same as may be found desirable. Normally, however, this valve 35 is wide open. After the air Iis exhausted from the apparatus, a gas supply pipe is coupled to the opening closed by the plu@r 25 and gas is drawn into the apparatus. 'Ibis plug is then returned to position and the mechanism is ready for use.

In normal operat-ion the piston is reciprocated, drawingthe gas from the expansion coil D, through pipe 26', and discharging it under pressure into the high pressure coils C; If during such operation any gas may escape past the piston 4 into chamber 37 it will be immediately returned to the coils by reason of the fact that the downward movement of the piston 4 will induce a suction through the pipe 32 and thus return this surplus gas to the system.

Referring to the operation of the apparatus in terms of pressure, it is desirable that theexpansion coil have a pressure of approximately one to three poun'ds, while the pressure in the coils C is apropximately seventy pounds. The pressure within the chamber 37 is maintained at approximately two and a half pounds by the check Valve 34. Any excessive pressure will cause the check valve to open and the pressure to be automatically reduced.

While I have illustrated and described in detail the specific construction shown in the drawings, it is to be understood that I do not limit lmyself to such details but consider myself at liberty to makelsuch changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim: I

l. In a refrigerating apparatus, a pump comprising a cylinder open at one end, a piston in said cylinder, a piston rod extending from the piston through the cylinder, a

disc fixed on the rod 'beyond the open end llll of said cylinder, and a flexible, corrugated,

tubular, metal wall connecting said discand the open end of said cylinder, the end of said flexible wall opposite said disc being also open, whereb said cylinder, lexible wall, piston, and isc form a chamber surrounding said rod.

2. In a refrigerating apparatus, a pump comprising a cylinder open at one end, a piston in said cylinder, a rod connected to the piston and extending through the cylinder, a disc fixed to said rod beyond the open end of the cylinder, a flexible, corrugated, tubular, metal wall connected at one end to the disc and at the other end to the open l end of the cylinder, said flexible wall being l end of said cylinder..

' it ljoins said cylinder being open, whereby .3. In .a refrigerating apparatus, comprismg a cylinder open at one end, a'

piston in said cylinder, arod connected to said iston and extending through v4said` c lin er, a disc fixed to said rod beyond- .a t e open end of the cylinder, a iiexilolfa':` corrugated, metal, tubular Wall connecting said disc with the open end of said cylinder, the end of said flexible Wall Where it joins said cylinder being open, whereby a chamber is formed by said cylinder, fiexible wall, disc, and iston, a bypass pipe connecting said cham r with the working end of said cylinder, and a check valve in said pipe.

` 4.l In a refrigerating apparatus, a pump` comprising a cylinder open'at one end, a piston in said cylinder, a rod extending through the cylinder beyond the open end thereof, a disc fixed on said rod beyond the open end of the cylinder, an oil containing, flexible, tubular, corrugated, metal wall connectingsaid disc with the open end of said cylinder, the end of said flexible wall where a ychamber is formed by said cylinder, flex ible Wall, piston, and disc, and a by-pass pipek connecting said chamber with the Working end of said cylinder.

5. In a refrigerating apparatus, a pump comprising `a cylinder having an open en d, a piston in sai piston and extendin beyond the open end of said cylinder,` a isc on said rod, an oil containing flexible, corrugated, tubular, metal wall connecting said disc with the open en d of said cylinder, said 'flexible Wall being open where it 'oins said cylinder, whereby achamber is` ormed by the cylinder, flexible wall, piston, and disc, a by@ l pass pipefconnecting said chamberwith theY working end ofthe cylinder, and acheck fvalve in said pipe.

tubular, metal wall of approximately the?- 'same mean diameter as the cylinder 'connect-1; v ed at one endto' said disc and at the other end lWiththe open end of said cylinder, said ilez v y 4 l.

6.,In a refrigerating apparatum-ja pum i v comprising a cylinder o nat its lower en 'zL-'apiston in said cylin er, .'a' rodx connectedv f 'Withl'saidpiston and Aextending ont through- -r'gthe open end-of said-cylinder, @a "disc,` fixed g jon 'said rod', and. al flexible, corrugated,

cylinder, a rod fixed to said' t e stroke of t e piston. ,t u

10.*As a neyrarticle offimanu'facture, a

f saidl l der, saidilexiblew ible wall being open at joins said cylinder. H v

7. In a refrigerating apparatus, a pump comprising a cylinder. open at one end, a piston in said cylinder, a rod connected with said lpiston and extending open end of the'cylinder, a disc-on said` rod be ond the open end of the cylinder, a lexthe vend ,-where l it ont beyond the ib e, corrugated, tubular,- metal wall 'ofw- 'i approximately the samen'ieanY diameter as ".fsaidcylinder connected at'one end to said dise and at'its other o en endto the open end of the' cylinder, w ereby a chamber is 'to y formed b said cylinder, ilexible wall, pis

tom-and isc, and a by-pass pipe connecting said chamber `wth thesworking'en'd of the cylinder" "ff-1*.l .bf 8. In `a refrigeratingappar'atusf, apump said piston'and extending out beyond the. open end-ofl the cylinder, a disc `fixed on said rod beyond the open end of the cylinder, aiiexible, corrugated, tubular, metal `wall whose mean diameter is approximately that of said cylinder` said flexible wall being connected at one end to said disc and at its other open end to the open end of said cylinder, whereb a. chamber is formed' by said v cylinder, flexible wall, piston, and disc, a

ton and extending out through .the o en end leirible,"4 corrugated, tubular, metal wall connecting sai disc withI the 'o en end of said cylinder, said liexible wall eing open lwhere it is' connected to said cylinder said c linder havin below an outlet at apoint corrugated, tubular, Zfnietalwall connecting l having an outlet ata point below the stroke of the` outlet;` w JOSEPH W. JONES.

ng end of the cylinder, and a isc with the; vpen -endj-of said'. cyliny being 'open where it Y. is'v connected to said" cylinder, said cylinder *comprising a cylinder. open, at one-end, a piston in said cylinder? a rod connected to `ofsaid cylinder, a disc fixed onsai rod, a

icc

`piston rod connected tosaid piston Land veir- 'f tending lout' .through l' the' l open e, endv of sai-d 1.cylinder,.a disc fixedl on said rod, a exible,

lie

me. piston, and acheck valve in said y y' 9:1` therein, a piston rod connected to said pis-