US1067505A - Liquid cooler or heater. - Google Patents

Description

o. B. DALZBLL L H, PBLDMBIER.

LIQUID COOLER 0R HEATER.

APPLICATIQN FILED MAR. 8, 1911.

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LIQUID COOLER 0R HEATER.

APPLICATION FILED MAR. s, 1911.

Patented July 15, 1913.

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LIQUI) COOLER QR .EEA'IERh Speoication of Letters Patent.

Patented July 153., 19113.

Application filed March 1811. SelfafNc. 613,163;

To all whom t may concern i Be it known that we, CrrARLEs B. DAL- znLL and HARVEY FELDMEIER, citizens of the United States, residing at Little Falls, in the county of Herkimer and State of New York, have invented a new and useful Improvement in Liquidoolers or Heaters, of which the following is a specification.

This invention relates to that class of apparatus for cooling orhea-ting liquids in which an inner flow tube or passage is enveloped by an outer iiow tube or passage and two liquids iow in opposite directions, one through the inner tube or passage and the other through the annular space between the inner tube and the enveloping tube. It an apparatus of this general character is employed for cooling milk, cream and the like in the process of pasteurization, itis desirable to run the hot milk through the vinner tube and the coolingV water or other liquid through the annular space between the inner tube and the enveloping tube.

The objects of the invention are mainly to produce an apparat-us of this character which is so constructed that the inner surfaces of the inner tube and its return bends and connections are readily accessible for cleanin so that sanitary conditions can be maintained with little eE'o-rt; that ifa leak occurs in the connections of the diierent members of the inner tube it can be readily repaired; that it a leak occurs in the enveloping tube and its connections it cannot contaminate the milk; that individual sections or units can be readily combined or grouped for use in different ways. as circumstances may require, and 'that the unequal expansion and contraction of different parts of the apparatus when in operation does not cause injurious strains. f

ln the accompanying drawings, consisting of two sheets: Figure l is a side elevation, Fig. 2 a frontelcvation, and, F-ig. 3 a rear elevation ofthe apparatus. Fig. 4` is a fragmentary vertical section, on an enlarged scale. Fig. 5 is a horizontal section on line 5 5, Hg. 4. Fi 6 is a i'ragrnentary longitudinal section o one of the outer tubes and its stung boxes. Fig. 7 is a fragmentary longitudinal section of 1one of the return bends ofthe inner tubes and con` necting parts. Fig. 8 is :1v-horizontal section on line 8 8, Fig. 2. Fig. 9 is a fragmentary longitudinal section, showing means for pre- 'these sections,

VentingA longitudinal displacement of the inner tubes.

Like reiference characters refer to like part-'s in the several figures.

The apparatus represented in Figs. l, 2 and' 3, comprises four longitudinal sections orunits arranged vertical-ly side by side and grouped' so as to form three initial sections lor. u nits A B C in which the hotmilk is cooled by lspring water, anda final section Din Whichthe milk is cooled by ice water or brine. The hot milk enters the inner tube at the upper front end of the first sec- 1 tion A through thepipe a, flows back and forth and downwardly through the inner tube of this section; flows across to the secondl section B through the pipe b connect? ing the lower-'frontl ends of the inner tubes oit these sections, iows upwardly and' back and forth through the ,second ysection B, iows acressto thethird section C through thevpipe c connecting the upper front ends of the inner tubes ofthese sections, flows downwardly and back and forth'through the third section C, flows across to the final section D through the pipe d connecting the lower front ends of the inner tubes'of flowsupwardly and back and forththrough e from the upper front end of thel inner tube thereof'through the pipe e.'

Each section or unit comprises upright front and rear manifold heads or headers 10 and 1l, which support both the inner tubes 12 and the outer tubes 13, and also serve as return bends for the outer tubes, while the inner tubes extend through and beyond these headers and are connected by return bends 14. outside of the latter. The flow passages ofl the headers are divided by horizont-al partitions or diaphragms 16 and 17 which subdivide the cavities of these headers in such manner that Izig-zag flow passages areformed by. thev headers andthe outer tubes through which the cooling liquid flows back and forth andupwardly or downwardly through the section or unit, as indicated by the arrows in Fig. 4.

p Inthe arrangement of sections represented in Figs. 11, 2 and 3, the cooling water enters the lower'endl ofthe front header 10 ofthe third section C through the pipe f flows upwardly andback and forth through the outer tubes. 13 Iand front and rear headers of this section, Hows across to the upper end the-final section and escapes Vto of the front header of the second section B through a connection orI return bend 18, flows downwardly and back and forth through the outer tubes and front and rear headers of the second section B, flows across tothe lower end o'f. the `front header of the .first section A through a connection or reand rear headers of this section, and escapes at the lower end of the front header through the pipe t'. The connections 18 and 19 are preferably constructed in the form ofat return bends and permit of the ready connection of any desired number of front headers.

The headers are supported upon a rigid frame of any suitable construction. As shown, the front headers are securedl at their lower ends to a transverse angle bar 20 which is supported by an upright frame 21, and the rear headers are ,secured at their lower ends to a transverse angle bar 22 which is supported-on an upright frame 23. These frames areconnected by longitudinal diagonal rods 24 and-the headers are connected by longitudinal rods 25. and tubular stays 26, Figs. 1 and 4. p

The outer tubes 13 are connected with the headers byv stuffing boxes 27 arranged on the inner sides of the headers and having packings 28 and glands 29, Figs. 4 and 6. Each tube is preferably secured to one header but free to slide in the other header in expanding and contracting. For that purpose thc tube may be provided at one end with a iiange 30 which is clamped between the bottoni of the stuiing Vbox andthe packing, while the tube is straight and free at the other end.

The inner tubes 12 extend through the headers and are held in position by stuffing boxes 31 arranged in the outer sides of the headers and having packings 32 and glands 33. The inner tubes extend straight through these stung boxes of both headers and are free to expand and contract. 1n the arrangement of partsy represented in Figs. 1 and 4, the inner tubes are held by the resistance of the stuffing boxesy only and as the boxes at'opposite ends of a tube seldom oder' exactly the same resistance the tube moves usually only or mainly at one end in expanding and contracting, very much as if it were fastenedm at., one end and free at the other.A

It is preferable, however, to hold the 'tube positively at one end because'that prevents any possible longitudinal displacement or crawling of the tube, and for that purpose the tube may be provided at one end with an external collar or bead 122, as represented in Fig. 9, which collar or bead is held in the stuiiing box v31 between the bottom thereof and the packing 32, while the tube is free to move in the opposite stuiiing box and header in expanding and contractlng. This collar or bead may be swaged on the tube or secured to the same by soldering or brazing or in any other suitable manner.

The return bends 14 which'connect adjacent inner tubes in the same section are connected with the ends of these tubes by detachable couplings. These couplings are preferably ,constructed as represented in Figs.4and 7 and comprise a flaring or conical seat 34 in the end of the return bend` which latterA is provided with an external screw thread, a tapering ring 35 of ductile metal, preferably copper or brass, which enters said seat and is thereby tightened upon the tube which it surrounds, and a shouldered or recessed screw nut 36 which is screwed upon the threaded end of the return bend and forces the ductile ring into the seat and against the tube. Upon removing thesereturn bends the ends of the inner tubes 'are exposed and as the tubes are straight they can be readily cleaned.

The transverse tubes Y) c d which connect the inner tubes of the adjacent headers are each composed of two elbows 37 and a straight tube 38 connecting the elbows, Figs. 2, 4 and 5. Each elbow is connected to the end of the inner tube 12 and the transverse tube 38 by a detachable metallic coupling, preferably like that which is employed for connecting the return bend 14 with the inner tube, and comprising a conical seat 34, a tapering metallic packing ring 3i), and a screw nut 36. The transverse tube 38 has sufficient clearance at its ends in the elbows to permit the connection to be adjusted to the position of the headers.

The connections between the water tlow spaces of adjacent headers can be readily changed as the desired grouping of the sections may require. The pipes g f it and z' are leach connected with a tapped tiange 39, Fig.l

2, and by the' use of these flanges and ot return bends like those shown at 18' and 19 different groupings of sections can be effected to meet the requirements of the user. For illustration, if five sections are employed one may be used -with brine or ice water'and four with well water and these four sections may be arranged in pairs, each pair having a separate inlet and outlet for the water, so that these four sections are arranged in two pairs in parallel, so to speak, which arrangement would provide for -a comparatively larger flow of water, owing to reduced triction, than 1f these four sections were. connected in series. Each of the lower connections b and d of the inner tubes is prefer.- ably provided with a drain cock 40, as represented in Figs. 2 and 8.

Among the numerous advantages of thisl V:tree to move -in the headers, such movementv being considerable, especially when the apparatus is used for heating a, liquid. The inner tubes. are easily accessiblefor cleaning and as the couplings applied to these tubes are of metal and cont-ain vno rubber or soft packings or gaskets thetubes and connections can` be easily kie/pt in a sanitary condition. tubes is of full size throughout. Solder joints are avoided. The headers need not be disturbed for rearranging the grouping of the sections. Thecapacity of the apparatus can be increased Vbyl lengthening the .tubes o r by increasing the number of sect-ions. The joints of the inner tubes with their return bends are located outside of the headers where they areeasily accessible if a leak should occur, and water cannot leak into the inner tubes `from theheaders or the outer tubes. V

We claim as our invention:

1. The combination of two headers having` flow passages, outer tubes connecting said How passages, inner tubes extending',

through the outer tubes and headers, means for holding said inner tubes xed with relation to one of said headers, and stuthng boxes provided at the other header through 1y which the inner movable.

2. The combination ing flow passages, said flow passages,

tubes are longitudina of two headers havmeans for holding said tubes fixed with relation to one of said' headers,

stuffing boxes provided at the other header through which the tubesare longitudinally movable, and inner tubes passing through said headers and outer tubes.

3. The combination of two headers having flow passages and provided with stuffing boxes in their inner and outer` sides, outer tubes connecting said iow passages and having their end portions arranged 1n said inner stuffing boxes, means for holding -s'aid tubes against lengthwise `"movement in said inner stufiin'g boxes at one end only, inner tubes extending through the headers and through the outer stuffing boxes, tween the outer ends of the innertubes.

' 4. The combination of .two headers, each provided with transverse partitions which divide the header into separated iow passages, such headers having'stuiing boxes on their inner and outer sides, outer tubes hav- The flow space through the inner.

outer tubes connectingv and connections being their end portions arranged in said in- .ner stuiing boxes, inner tubes extending throughthe outer tubes and the headers and through the Vouter stuffing boxes, means for holding said inner tubes at one end in said outer stufling boxes, said tubes passing freely through the opposite stuiing boxes, and con-A nections between the outer ends of the inner tubes. r

5. The combination of two headers having flow passages, outer tubes connecting said iiow passages, tubes fixed at one end with relation to a header, connections between said outer tubes and the other header permitting longitudinal movement ot said outer tubes, inner tubes passing throughsaid headers and outer means for holding said outer t tubes, means for holding said inner tubes fixed at one end with relation to a header, and connections between said inner tubes and the other header nal movement of said inner tubes.

6. The combination of two headers having iow passages, said headers having stuiiing boxes on their inner and outer sides,.outer tubes having their end portions arranged in said inner stuiling boxes, one end of each of said outer tubes havin a projection clamped in one'of said stuiiingoxes, and inner tubes extending through the headers, outer stutl'- ing boxes and outer tubes.v

7. The combination of two headers having iow passages, said headers having stuiing boxes on their innerl and outer sides, outer tubes having their end portions arranged in said innerstuiiing boxes, and inner tubes passing through-said headers, outer stuiiing boxesand outer tubes, each inner tube having a projection near.l one end thereof4 clamped in one of said outer stuffing boxes.

8. In an apparatus for changing the tem` perature/ of liquids, the combination of two sections, each comprising two headers having flow passages, -outer tubes connecting said passages, inner vtubes extending through said outer tubes and lsaid headers, and a transverse connection between the ends of inner tubes in both sections, said transverse connection comprising a transverse tube connected to one of said inner tubes, an elbow connected to the other tube, and-a detachable coupling connecting said elbow with said transverse tube. l

9. In-an'apparatusfor changing the tempera-ture of liquids, the combination oftwo sections, each comprising two headers having flow passages, outer tubes connecting sald passages, inner tubes extending through said outer tubes and said headers and connections' between the ends of adjacent inner tubes in the same section, and a transverse connection between adjacent ends'of inner tubes inbot-hy sections, said transverse connection comprising a transverse tube, elbows connecting said tube with the vinner tubes, l

.through the outer and detachable couplings connecting said elbows with said inner tubes and with said transverse tube, substantially as set forth.

l0. The combination of two headers having flcw'passages, outer tubes connecting said ilow passages, inner tubes extending tubes 'and headers and return bends connecting the ends of the inner tubes, the end portions of the tubes .fitting within the return bends, the ends of the return bends' having internal conical seats, tapered metal rings surrounding the tubes and fitting said seats, and means, for forcing said rings into said seats. i

11. In an apparatus for changing the temf perature of liquids, the combination of a plurality of sections, each comprising two headers having flow passages, outer tubes connecting said passages, inner' tubes eX- tending through said outer tubes and said headers, and connections between the ends of adjacent inner tubes, the ends of all the headers at one end of the apparatus being alike, an inlet pipevconnected to one end of the header of the irst section, an outlet pipe connected to one end of the header of the last section, and return bends connecting thc ends of the headers of adjacent sections, the portions of said inlet and outlet pipes and of said return bends which engage the ends of the headers being alike, whereby the inlet and outlet pipes may be connected to any header and any number of headers may be connected together.

Witness our hands in the presence of two subscribing witnesses.

CHARLES B. DALZELL. HARVEY FELDMEIER.

` Witnesses:

GRIFFITH PRICHARD, CELIA WooDARD.

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