US1996777A - Chilling device - Google Patents

Description

April 9, 1935. H. E. VON SEGGERN EI'AL 1,996,777

CHILLING DEVICE Filed June 29, 1932 3nnentor5 firmer f." l/o/v SEGGEEA ZE/rfirA. Val 52665641 Patented Apr.9,1935 v T 139 777:

a a :11,996,777 I a CHILLING DEVICE Henry E. von Seg'gern and Ernest A. von Seggern, Es'condido, Califl i j Application 'June 29; 1932, Serial No. 619,896

7 18 Claims. (01.62-,-126) Our invention relates to chilling devices, and 2 is an end elevational view of the trough memthe objects of our invention are: r V her from which'the substance to be chilled is First, to provide a device of this class] which poured; Fig.3 is an enlarged sectional View of our is particularly suited for cooling liquids, such as; novel chillingunit taken through 3'3 of Fig. 1; 5 milk, which may be poured thereover; 7 Fig.4 isan enlarged sectional View of the sep'ara 5" V Second, to provide a chilling devicein which. tor'used inconjunction with our chilling unit, the surfaces thereof may be made smooth and, and Fig. 5 is an enlarged fragmentary, sectional V flat so as to be readily cleaned, thereby providview through 0f Fig. 1 showin the er ing a device which may be easily maintained in of arra the tubes Containing the e a 10:2 sanitary and sterile condition; p similar'characters of reference refer to similar Third, to provide a device of this class, which pa t a portions heu e Seve al V WS is particularly efficient by reason'of ample con-- of the drawing. j tact of the cooling medium and the substance: to Bracket support 1,-water outlet tube 2, water: be cooled with the inner and outer surfaces of inlet tube 3, en member M e Plates afi et the device; V l 1 members'fi, distributing trough1,refrigerant dis- Fourth, toprovideadevice of this class inwhich Qharge p p 8, o -P inlet the cooling medium may be readily, quickly and pipe. '0, evaporatort Covering J2, colcompletely drained from the chilling device so as lector trough 13, separate! Casing ba e to permit sterilization; 'valve l6 float l1, drain plate I8, gas outlet tube Fifth, to provide a device of'this class which 9, oil co t pa 0, a d equalizer p pe incorporates a preliminary cooling means and. a constitute the Principal Parts and Portions Of 0 1 final cooling means or chilling means, the first 1 v l Chilling deViCei a i of which may use water as acooling medium, a The herein described Chilling device D while the second utilizes arefrigerant sothat the eu a y ad pt d for use in conj n i n with 25 substance to be cooled may be progressively re- Ou eepending app entitled COO-ling al duced in temperature as it flows over the chill paratus, Serial No. 619,8 fi in e U ted ing it; a p States Patent Ofiice June 29, 1932. Y 1 Sixth,to provide a device of this class'in which. A bracket upport I is provided which i a p the gas evolved from the refrigerant is'permit to be secured to a vertical surface. Near its up 3o ted to flow upwardly and collect yet causing only per extremity the bracket support I supports a a minimumemount of disturbance to'the'liquid, water outlet tube 2 which extends laterally ther'es that the gas maybe collected in a relatively from. Directly below the water outlet tube the dry state without the use of extra equipment for a bracket I supp e w r inlet 3 Which extends this purpose; f Y in parallel disposedrelation with the water out- Seventh, to provide a'chilling device which in-' let, tube. These two members are connected at 5V corporates a novel means of circulating the retheir extremities to a verticallyarranged end irigerant therethrough and of separating the vamember or connecting member 4. The two tubes rious components of the refrigerant for re-cir- 2 and 3 are joined at their adjacent sides to verculation, and a tically disposed side plates Swhich are arrangeda 40 Eighth, to provide onthe whole a novelly com in parallel disposed relation with each other structed chilling unit which is durable efficient and separated a distance considerably lessjthan in its action and which will not readily deterio the diameters of the inlet and. outlet tubes thererate or get out of order. 7 a i by forming a vertically arranged flat panel with With these and other objects in view aswill upp an lower rims formed-why t e tubes 2 and v appear hereinafter, our invention consists of cer- 3, an extended rim formed by the end member 4,

tain novel features ofconstruction, combination and a supported-rim formed by the bracket l. and arrangement of parts and portions as will- The tubes Zand 3 areprovided with openings 2m be hereinafter described in detail and particuand 3a, respectively, which communicatewith the larly set forth in the appended claims, reference chamber, designated A, formed by the side plates 5 being had to the accompanying drawing andjto. 5'. Within the chamber there is provided a series x the characters of reference thereon which form of. baffle stripsB extending between the side mema part of this application, in which: bers so as to cause water to flow back and forth in a Figure l is a side elevational view-of our chill-.- order to progress from the lower inlet tube to ing device with parts and portions broken away the upper water outlet tube, as shown by the and in section to facilitate the illustration; arrows in Fig. 1. I

. A distributing trough I is mounted above the Water outlet tube; This trough is-substantially semi-cylindrical in cross section and is provided with a series of holes Iaalong its bottom directly over the water outlet tube 2. The ends of the trough are closed and provided with projections "lb arranged in pairs so as to straddle lugs la and 4a extending upwardly from the bracket support I and the end member 4'. j Y

Immediately below: the water inlet pipe 31andprojecting laterally from the bracket" I; is a repip 3'ar p f a ly-p tionedin nc semen with each. other and theiifhorizo'ntal sides; are bridged by cover plates 9, as shown best in Fig."

3, so aste'provide fiat'verticallsurfacesbetween the two pipes.

At the lower end of the bracket there isp'rovidedaza horizontally; extending refrigerant inlet piper] fl whichis disposeddirectly below thepipesj 2;-'3:-andv8; in parallel relation therewith. Like- 30 :j tor; tubes! I are..joined to, the refrigerant inlet ll'l'ie refrigerant inlet pipe -I Brests in a substanwise. the refrigerant inlet, pipe: l l:is. joined to the end member 4. The space: between, the refriger-; ant inlet and discharge pipes is filled with a plu-; rality' of vertically disposedevaporatori tubes :1 l

which are rectangular in .crosssection-so when positioned against eachv other, formsubstantially smooth outer surfaces. The. endsof the evaporaand discharge pipes so as to provide a plurality of independent fiuidlconductors' between these two members .The evaporator -tubes are provided with covering 12 on their exposed surfaces which providesa smooth, easily cleanedsurface: The; evaporator. tubes are therefore in effect a pair of: parallel disposed walls, such as the Walls 5, connectedbyvertical partitions at closely spaced in- I i Y I through the liquid refrigerant, passes through tervals.

tially semi-cylindrical oollecton tr'ough l 3 which is closed at itsend adjacent the bracket I" and is provided with a spout l3a -at its extended end, as shown in Fig. 1.

Well as the tubes II and collectortrough 13 are rounded or made assmooth aspossible so asto eliminate all corners or' crevices where} bacteria might lodge and to otherwise provide a'surfacewhich may be readily and quickly cleaned and sterilized.

55.:.-' 1 7 end" is separated'from-thesremaining portion of Therefrigerant discharge pipe projects through the bracket l and into the-lower portion of a separator casing l4 nearone end thereof. This thecasing by a bafilev 15 which provides an opening I50; at the upper portion of the casing and an 7 opening IBb'at the 10WI '1JOItiOI1 ofthe casing.

the lower edge ofthe opening Ilia is joined to a drain plate I8 which is disposedat a slight angle and slopes towards the extended endof the casing M. ::The drain is oonnectedalong its side margins to the casingso that liquid mustfiow down to the lowerv end of the. drainplate. 'At

' this end the drain plate is' provided with a'low wall. I86; and arudimentary spout 1822. Liquid down turned end I9afof a gas outlet. tube. lfi proi- I The connections between the} several-pipes- 2-,:3,"8= and i8, and the'platesfi as with the gas.

jectinginto the casing l4 from'the extended end thereof.

" The refrigerant outlet pipe 8 is provided with a partition 8a at its end projecting into the easing [4, said partition covers the upper half of the refrigerant discharge pipe so as to form a gas collecting chamber disposed above the evaporator tubes ll.

An equalizer pipe 2 I communicates with the bottom of the separator casingbetween the. bafile l and the :end of the casing provided with the refrigerant discharge pipe 8. The equalizer pipe 7 extends downwardly and joins the refrigerant in- *let;pipe l0 and continues to a storage chamber S, shown fr s en r y in i thereof onto thefside plates, 5; between which cooling water is circulated. The milk intheform.

of two sheets-one oneach side of the chilling device thenifiows over the Water inlet pipe 3,.

erant discharge pipe and flows out underneath the partition 8a, whereupon the gas bubbles-up the, openingJEa, flows. over the drain plate l8, and isdrawn into the'gas outlet-tube l9.which is connected to the. intake side of a compressor,

notshown. It is'customary, in some types. of.

compressors, such as sulphur dioxide compressors,

tof'provide. a quantity of oil or otherlubricant inv the refrigerant. =This oil collects on topof the liquid refrigerant betweenthe baflle; I5 and the end of the casing having'thel refrigerant discharge pipe. 8. Thebubblesof gas which pass up. through the liquid refrigerant becomeooatedwith oil: as they pass through-the oil film on top and carry the 'oil;.over the.baffle,l,5;on to the drain plate I8, whereupon the oil is deposited on the drain'plateiand flows into theoil. collecting pan 28. The oil: accumulateshere until. the gas outlet tube l9 isv nearly submerged therein, where,-

upon' the-.Ioil is. drawn into the gas.- outlet tube- This arrangement ensures circulation of the lubricant; with. the gas but renders iti-practieally. impossible for liquid refrigerant to free to fiow. through the refrigerant outlet pipe without undueagitation-of the liquid refrigerant,". whereby the gas maintains al relatively; dry.

condition. Inasmuchas thefloat valve. in the separator casing tends tojmaintain the refrigere ant liquid level above. the refrigerant discharge pipe} 8, the. evaporatortubesiare normally full of: liquid; refrigerant"; Withithe evaporator tubes:

filled with'liquid refrigerant-the' capacity ofa compressor to remove heat from the evaporator tubes is practically directly proportional to the absolute suction pressure produced byithe conipressor, thusprovidinga particularly eflicient evaporator construction, Though we have shown and described .a particular.1construction, combination and arrangement of parts'and portions, wet-do not wishwto belimited to this particular construction, com,- bination and arrangement, butdesire toinclude in the scope of our invention the construction,

combination and arrangementsubstantially set forth inthe appended claims. g i

Having thus described our invention, what-we claim as new and desire to secure by. Letters-Patent is: f

1. In a chilling device, a hollow fiatsurfaced vertically disposed panel, a liquid-refrigerant supply tube traversing the lower end thereof,'a re-' frigerant discharge tube traversing the upper end thereof, a plurality, of vertically disposedpartitions arranged in spaced parallel disposed relation across and within said panel, saidpartitions forming, evaporating spaces therebetween communicating with said supply tube and said outlet tube, whereby the gaseous particlesof evaporated refrigerant are free to rise directly into saidoutlet tube, and a second hollow flat surfaced verti-j cally disposed panel arranged directly above and joined at its lower margin to said first panel, a

circulating means formed within said-panel between the central portion and upper end thereof, and a refrigerant circulating means formed within said panel between said central portion and the lower end thereof. r a

' 3. In a chilling device, a smooth flat surfaced hollow vertically disposed panel; enlargements protruding laterally from the surfaces of said panel but merging therein, said enlargements disposed at the upper and lower ends of said panel and across the central portion thereof, a water circulating means formed within said panel between the central portion and upper end thereof, a refrigerant circulating means formed within said panel between said central portion and the lower end thereof, said refrigerant circulating means comprising an inlet pipe incorporated in,

the lower enlargement, anoutlet pipe incorporated in the central enlargement, and vertically disposed evaporator tubes formingaplurality of independent conduits between said inlet and outletpipes.- y 1 4. In a chilling device, apair of thin hollow vertically disposed panels onearrangeddirectly below the other and forming anrupper and'a lower panel, transversely extending enlargements at the adjacent ends and remotei ends of said panels,. saidenlargements merging into the surfaces of said panels,a water circulating means associated with the upper panel, said'lower panel comprising a pluralityof vertically'disposed rectangular evaporator tubes securediltogether side by side'so that their exposed sidesfo'rmthe sur i faces of said lower paneL-and-an' inlet pipe'and 7 an outlet pipe common. to said "tubes 'andincor-L porated in the enlargements borderingsaid lower panel. a i

5.-In az'chilling device, a smooth flat surfaced circulatingmeans formed within said panel'be- I tween the' central portion and upper end thereof, a: refrigerant circulating means iformed within said panel between'said central 'portion and the lowerend thereof, means for distributing a, liquid along the upper enlargement-whereby the liquid iscaused to flow inrsheets'orlfilmsiover'the surfaces of 'saidpanel', and means for collecting said liquid at the bottomofj said panel s a 6. lnz'a chillingdeyice, a smoothiflat surfaced hollow vertically disposed panel,- enlargements protruding, laterally from the 7 surfaces ofsaid,

panel but merging therein, said enlargements disposed'at the upper 'andlowereends of saidpanel and across the "centralportion thereof; a water circulating means'formed within said panel a betweensthe central portion and upper endthereof, a refrigerant circulating means formed within said panel between said central portion and-the lower end thereof, said; refrigerant circulating meanscomprising an inlet pipe incorporated in the lowerlenlargeme'nt, an outlet pipe-incorporated in the central enlargement,everticallydis: posed evaporator .Itubes forming a plurality of independent conduits between said inlet andlouta let pipes, means for distributing a liquid along the upper enlargement'xlwhereby the liquid" is caused to flow in sheets or: films overthe surfaces of said panehand meansfor collectingsaidliquid at the bottom of said panel 7. In a'chilling deviceyapairlofi tmdhbnbw vertically disposed panels one arranged directly below the other andforrning an upper and;.a lower panel, transversely extending enlargements at the adjacent'ends and remote ends tofxsaid panels, said enlargements merging'int'o the surfaces of .said panels, a watercirculating :means associated with the upper panel, said lower panel comprising a plurality of vertically disposed rectangular evaporator tubes secured together side by side so that theirexposed sides'form: the sur- 1 I faces of said lower panel, an inlet pipe'and ianx outletpipe commonto'said tubes and incorporated in the enlargements bordering said lower panel, means for. distributing a liquid along the upper enlargement 'wlrie'reby the liquid is. caused toiflow in sheets or films over the surfaces of said panels, and means disposedat the lower edge of the bottom panel for collecting said liquid.

8JIn-a chilling device; a plurality. ofvertically disposed rectangular" evaporator tubes "secured together side byside: so thatitheir exposed sides form fiatparallel disposed surfaces, an inlet pipe separator chamber connected with said" outlet,

and .means therein tendingyto maintain liquid refrigerant at levels above said outlet pipe where'- bysaid evaporator tubes'are normally completely filled and said outlet tube-is 'onlypartially filled with liquid refrigerant. 1 u; 1- 9; In a chilling device, a pair of 5 thin hollow tain liquid:refrigrantntdeveb. above :said zoutlet pipe whereby :said evaporator tubes; arein'ormally 20 completely' filled'withf'liquidt-refrigerant. l

-10. :I n a Ichillinga'device,ia;pluralityiof vertically disposedsrectangular :evaporator rtiibes secured together sidekby side so that their zexposed sides formjiflatiparallel disposed :su f aces, :an. inlet :pipe common :tothedower eridszof said :tuhes,;an,= cute let pipe common to :the :upper: endsio'f saidxtubes, said ioutlet 'pipeiprovided 'gwith itsz: outlet :opening disposed ldownvvardlyironiiits ;upper.:side:thereby forminga:gaseoussrefrigerant receiviing chamber 7 above:saidl-evaporator tubes; V

zll; inn chillinga'device' amlura ft yri'ofzvertically Y .dlsposed' tevaporator eitubes, ram-lower:horizontal 'connecting pipecommon tmtheldwer ends ;of said tubesQanIrupper horizontal aconnecting pipe .conimonfto'the upperzends of said-tubes, the upper connecting,zpipeiincluding :ani'outleti aperture LdiSr posed iibelow its .upper-zsi'de; said spipe .;forming along :its upperaportion above :saidoutlet; aperture an :eva'porated tor agaseous refrigerant rreceiving 4o .chaniberQ a iijecept'aclefin communication :withla source of refrigerantfand connectedxrwit-hmoth said :upper connecting pipe :jandl said: lower connecting pipe said receptacleextending above the upper connecting pipe,-anda1neans :fcr Emaintain- 7 ing the liquid level :in saidreceptaclerabovethe .upper connecting pipe whereby :the :gaseous: refrigerantin said receiving chamber isrcaused "to pass upwardly-through additional liquid irefrige Aera-nt."@-

:12; Ina-chillingzdevice, a pluralityzof yertically disposed evaporator tubes, aa lower :zhorizontal connecting apipeicommonxto the ilOWBI ends of .said tubes, tanupper --hor'izontal connecting pipe common to-the'upperendstof said tubes,:the :upper "connecting pipe including :an outlet aperture :dis-

:posedgb'elow its upper sside, :said pipe :forming .alongQz-its Iupper aportion-gfabovesaid "outlet aperrture .an-evaporated or;gaseousrefrigerant receiving chamber, anequalizer iconduitrconnected :to both theoupperiandclower rpipes, sazfloat chamber 7 atzethe upper-pend so'f J said: conduit :Land receiving sthe ou tlet end of sai'diupper :pipe and meansiin the :fioat :chamberfor maintaining the. liquidre frigerant level :above: theaupper connecting gpipe whereby, thegaseous refrigerant in' the receiving .chamber. is 1 caused Jto. pass :upwardly rthroughaad ,ditional liquid refrigerant. upongentering itheifloat vchamber. V

, 13. Inia chilling idevicesapluralitv of wertically L disposedtubes','- a lower horizontal-connecting pipe commonzto' theslower ends of said tubes, arr-upper horizontal connecting :pipe a-oommon to the, rapper ends of.esaidetubes,:the'upp ii connec-tinggpipe including an outlet aperturerdisposedzbelow;itsiup- I afirigerantwntletitube m aproximityf-to the ilubri- $5 per side, said pipe 'zformingr alongritstzupper nor tion abovegsaidwoutletiaperture :i'an evaporated or gaseous :refrigerant :receivinguchamb er; :mhereby aflubricanticontamedi-inzthe refm'gerant tends to risexand ifloatzonlthegsurfaceiof the liquid :definingitheireceivingfohamber,:meanszconnectedrwith r,

the outlet end of the uppenccnnectingpipearranged itoz maintaingiliqnidizrefrigerant above the levelssaidzupper :pipe whereby :the ::lubricant andzgaseous refrigeranirare caused :to. mix asirthey issue from said supper :pipe :and v:pass iiupwardly frnmzthesliquidssurfaceiin saidizmeans in theiform ofibuhbles.

:14. ttn raechilllngidevice an e'vaporatormeans in communication :iwith :a "source .Jof :uqum re-' frigerant,esaidaevaporatormeans having iavgase euseretrigerant arecewing schamber at lits :upper I outlet-whereby the :gaseous refrigerant "from .the

evaporator'means is caused; to :pass through additionaliliqui'd refrigerant. Y 1 V :15. ln a chilling device;employing1arefrigerant containing:a-lubricantgan evaporator means in communication with a source of liquid refrigerant, said evaporator means having. a gaseous refrigerant-receiving chamber, at its upper side, and agaseous 'refrigerant outlet itherefor below said upper sidefwhereby a lubricant contained in the refrigerant tends to rise andiloat on the surface of the liquid refrigerantin said chamberand fflowzrwith-fithe gaseous refrigerant through said outlet, a receptaclecommunicating with said outlet-to receive gaseous refrigerant therefrom, and means for maintaining a liquid refrigerant in said receptacle at a "level-above; said-outlet whereby the-lubricant issuing from-'theoutlet'tends to collect on the surface of the liquid refrigerant and the gaseous refr-igerant is caused to pass upwardly through the lubricant and carrythe lubricant jtherewithfl 3 Q 'lfiilni-a-chilling device employing a refrigerant containing :alubricant; "an evaporator means in communication with a source 0f *liquid refrigerant, saidevaporator means having -a gaseous refrigerant receiving chamber at-' its upper side,

' and a gaseousrefrigerantroutlet therefor below said upper *side, *whereby a lubricant contained in= the refrigerant tends "to rise andfloat on the surface of the liquidrefrigerant said chamber and flow with "the gaseous refrigerant through said:outlet,- a receptacle communicating with said outlet :to receive gaseous refrigerant therefrom, em ansfor maintaining a-liqui'd refrigerant, in said receptacle -1at-a"level above said-outletwhereby *the fliibricant issuing "from 'the outlet tends to collect on the 'sur'face of'the liquid refrigerant a-nd the" gaseous refrigerant-is caused-to pass up- 7 wardly through the lubricantandcarry the lubricant therewith, -;*and a collector means "for the gaseous refrigerant and lubricant carried thereby. L17.-p=In a chilling apparatus employinga-refrigerant containing a lubricant, an evaporator means, a separator; chamber and a float-chamber communicating-with the-upper side of the evapiorator Vmeans, a liquid refrigerant in-let in'the float :chamber; arfloa't 1 controlled I val-ve therefor, :said :char'nbrs'kbeing irelativ'ely'disposed so that the float .=:contro1led' walve maintains the liquid 'FIEVGI'S. in tbdthichanibers above' the evaporator means;aiubricant:collectlngimeans communicatwith:gsaidnseparator rchamber, a gaseous recant collecting'means whereby lubricant may be drawn with the gaseous refrigerant into said tube.

18. In a chilling apparatus employing a refrigerant containing a lubricant, an evaporator means, a separator casing arranged opposite the upper portion of said evaporator means, a bafiie dividing said separator easing into a pair of chambers communicating at their upper and lower portions, one of said chambers communieating with said evaporator means, a liquid refrigerant inlet in the other of said chambers, a

per portion of said other chamber and communi.

eating with said first chamber, and an evaporated or gaseous refrigerant outlet tube extending in contiguous relation to said oilcollecting means I 7 whereby oil may be drawn into saidtube with the gaseous refrigerant. a '7 HENRY E. VON SEGGERN.

ERNEST A. voN SEGGERN.

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