US1406055A - Condensing apparatus - Google Patents

Description

I. S, MERRELL. CONDENSFNG APPARATUS.

I. S. MERRELL.

CDNDENSING APPARATUS.

APPLICATION mtu Nov. 1s. |915.

Patented Feb. 7, 1922 SHL I'S'- SHEET 2.

l. S. MERRELL.

CONDENSQNG APPARATUS.

PPM/umu HLED Nov. Hs, |915.v

1 ,406,G55, .Patented Feb. 7, 1922.

ISHEETS-SHEET 3.

.flTTR/VEY l. S. MERRELL.

CONDENSING APPARATUS `APmlcATmN FILED Nov. xs. Isis.

l ,406,055 Patented Feb. 7 1922.

TSHLE. FS-SHEET 4.

5J A 11mm@ TTa RNEM l. S. MERRELL.

CONDE'ISING APPARATUS.

APPLCATION min Nov. Hs. 1915.

1,406,055, Patented Feb. 7, 1922.

, SHkEYS-SHEET 5.

.1. s. MERRELL.Y

coNnE'NsmG APPARATUS.

APPLICATION FLED NOV. 38, i915.

` A-r-roR/vav.

Patented Feb. 7, 1922.

I. S. MERRELL.

CONDENSING APPARATUS. APPucAnuN man Nov. la. :915.

1,406,055. 'Patented Feb. 7,

1922. -1 sHurs-SHEU 1.

QII- .tothe high Ines-zure pump milk,

where desired. Each of tanks MWh-i, 24' and W95 is provided with a anitable pipe 26 having preferably a spray 0r perforated head for introducing to the milk live steam to overheat the same, For instance, the milk ma Y be overheated with live steam to 19()o l?. Vor eight reunida and then the temperature may he lonen-:l ua ruickly as possible to 126, at 'laish point tlie milk may he drawn from the pan. The temperature may he rapidly rai-.emi or re- (lured hy drawing; or liroukinglho niv-nein respwtively. The oii'erheating aw i ized renders the milk piartirally sterili.

The milli parases from the heater "Elim" or.` as before described, may lie conveyed through the bypass wilyvdirectly from ianlcS Lle-i 24'- or--:":5-- to the pump-31?, by means of which it is forced through pipe -32- to a. spray nozzle 033m-, whieh propels the milk into the desiceating; eliamher l4- in the form of a finely divide-,l 'ipray or :niet and into aV current of moii ab sorbing air introduced through the ai? inlet -34'02 l'he liquid 'condensing apparatus whiol'i constitutes; the most important feature of this invention, as liest ahown in l'figures 3 to 1l, inclusive. comprises a vertically airranged cylindrical chamber or heater 35 formed preferably of thin sheet metal, auch as sheet tin, and in the particular construction shown eomprises a, p urality of', in thie instance twelve, sector shape sections 3G having their adjacent longitudinal edge portions (hinged outwardly and in sentant to form a substantially tight jointV .vhirh Duw be made liquii'l-tight by solder or other Weil known means. Such Bauges held Contact and connected together by auital'ile reinforcingr bars 37- and -38 ositirmed upon opposite sides of associated gangen and connected together hy bolts or rivet-S 39mextending through the flanges and the reign forcing bars upon opposite sides thereof.

The. bottom of the heater, as liest shown in Figure 10, is likewise formed of sectors -l!- eorreslxinding t0 the setioiie mii-Eil and having their adjacent edges; flanged ont wardly in like manner and fitted laatste-aai the saine reinforcing bars 37M and MI-mto form a Continuation of the joint heiwn the sections 36%. The respective ende of the bars 3T- and -38- are liaugeii at right angles to the main body of the bara and bolted to suitable castings 4l at the top and 42hat the bottom of the heaten and the sectors -40- are preferably riveted to the casting -42 which is provided with a ventral )roja-ting hoes --'l3-- internally and externally threaded for a pnrpoae lit-reinal'ter deserihed.

The exterior Surface of tinchamber or heater M35 is provided with a plurali@ of hdl'izontally disposed cireum ferential drip rings #44". preferahlv harinar their edges serrated or notched. The water wliirh von densi-e upon Ihe'surfae'o of the heater runs; down iipon the drip rings` and drops lroni their outer edges. to the lioom of the eilandje?.

The 'uppvr erige of the segmental nieiilm's (3- terminates adjacent the upper odin: of the circular wasting --41- and the casting Ml is provided with aieieppvd portion upon ite iuneil upper portion, in "aliirh and between the casting --iiand the segY ments -m a iylimlri'fai plate like memlser iim i adapted to he Iseated, and enitalile rivets Ahi-- extend through the mating. through the plate fiw, and; through theaegnwnts --Sltlforeri'uringihe parte together, umh for the pmpoae of mak ing asuhstantially Smootheven interior con4 tour, the segments 36,- are provided with 'Fruatwroniual eountersnnk portions 4`T adapted to hef drawn into the openings in the plates -4ilijf lha frusto-roi1ieul head M45-v, upon the bolts; or rivets -4-. i

A ring member Y- 'im of aililirient interior eirruniferenee i5 tightly itteil o\ er the plate -ei--land carries a eylindx'iezil sheet metal section Mlln, A, series of rivets or holte; -w-il'v-w haring their ends eountensunk in the `mclnbel. ll5 serve to connect these meinhera together and the ringr --49- is spaced a Snicient distance from the upper 'edge o f the member a5- to form a liquid receiving 'channel between the member 45h-f and the section --5(?-, and this rhaunel ia provided with a suitable outlet m52- and a disrharge pipe M-fli'l aligned with the outlet and connected to the rinli;r -49- and aertion --5U- hy the rivets -l-- and -5-l--.

The f-ircular casting lkw carries below it a second angular casting 55" secured thereto by holte -'--5(3- or otherwise, and the casting in turn carries a cylindrical shell 5T surrounding the heater -35- and having a suitable rlosed bottom 58- provided with aJ central opening fitted over ne boss l3- upon resting wlb and se mired in place hy means; of lori( nuts 59M to 'lez-rin a eliainlwi -Mf-fl-v-Y iulapeil to receive steam through piper, --B- for heating the wall roniprising the elialnber oi heater WSN, The steam inlet pipes --llv enter, and disehareje steam, tangentialy of .the shell or jacket M5L so that the introduced steam rotates between the shell iand heater 455- whereby a substantially uniform tezn'ieratnre is maintained at all portions of the heater B5-d and the drips" falling 'from the drip rings are thrown out away from the surfant of the heater W35- liy rentrifliggal form'.

The bottoni Mols.- ia provided with a muitallle outlet pipe 4511- for condensation,

oper-ably connect/6d thereto in any suitable Well known manner. The outlet pipe 62- may, as shown, he U shaped in form to constitute, or may embody, a trap in which the water of condensation collects to prevent the escape of steam from the steam chamber, and this pipe is provided with a suitable air-vent 6&2'- through which air entering with the steam, through inlet `61-, may esca e.

T e interior-ly threaded boss -43 is adapted to receive the exteriorly threaded pipe -21- for conveying the liquid to the heater 35`. Within the heater or chamber A552- is positioned a beater -63- comprising a vert? ally arranged central shaft having its lower end journalled in a supported on the sectors *40* and the casting -42-, and its upper end removably mounted in and keyed to a hub`-66 provided with a suitable endthrust spring 457` for holding the shaft to its bearing in the spider -65-.

The shaft M carries a pair of spaced castings 68` and --69-, the casting `68- arranged adjacent the interior of the lower surface of the heater --35 and the casting `-69` arran ged in a plane adjacent the upper edge of tie ring --4 5-, These castings -68- and -69-- comprise a, plurality of radially extending arms, the casting -69-, as best shown in Figure 7. comprising six arms --'lL` united at theirouter ends by u ring -7l-, and the casting -(8, as best shown in Figure 9, comprising a cen trai portion -T2 and twelve radiating arms -73-. The casting -G5lcarries a plurality of u )right bars -74- having their upper ends alternately secured to the outer ends of the arms -TU- and to the ring 71- intermediate the arms T(L by means ot' downwardly projecting lianges -75- to which the bars may be secured by rivets. bolts or otherwise The lower cast-- ing -68- carries a suitable circular plate 76` of slightly less diameter than th interior of the heater --l5- and having its circumference coi 'leiding with the outer edge of the bars T-fe.

ntermediate the casting plate *7&-

-69-- and the are positioned a plurality of orizontally disposed ring-shaped plates `TT`. The distance between tl: plates may gradually increase from the bottoni toward the top. These ring-shaped plates -TT--, u likewise the closed plate -Tl`, are provided with slots ---"h- :it their outer edges for receiving the bars Jlso that the circumferem'e of the plates` corresponds with the outer edge of the bars.

he opeipng at the center of thc disks 7- is o substantially greater diameter than the shaft 64m so as.V to leave considera le space for the passage of vapor, as hereinafter described,

Suitable posts 579-, having their lower ends projecting through openings -80- in the ring `71- and secured therein bv ke s or otherwise, project upwardly from t e upper of the plateilike rings -77`, and to the -e posts a suitable deflecting hood -S1- is secured', in any suitable manner, as by solderin rivets, or otherwise, said hood being space vertically a short distance from the upper surface of the plate -77 and provided with a vertical flange -82- rotating with the beater -63h and within a downwardly depending flanged portion -3- upon a disk 84- carried by a T- shaped ring 85` secured by screws or otherwise to a ring-shaped casting -86- which latter is mounted within and secured to the section 50- by rivets -87- or otherwise. A suitable groove is formed between the T-shaped member and the casting -86- for the reception of snitable packing for forming an air-tight Joint. between this portion and the cap -88- of a suitable vapor condensing apparatus -89 hereinafter described. r

A suitable detieoting plate 9D- 1s mounted upon the shaft G4-intermediate the upper of the plates -TT- and the cooperating flanges -82- and 83- and a igned with the openings through the plates -77- and he discharge outlet through the flanges --82` and 83-.

The bearing -66- carries an oil or grease cup -9ladapted to collect oi l or other foreign matter that may flow from the packed joint -92- for the shaft 93 of which the bearing -66- is a part, and upon which shaft a suitable beveled gear -94 is mounted for co-operation with a v second beveled gear -95 mounted upon a shaft 96- ournaled in a supporting frame hereinaflter described, and carryingr suitable pulleys 97- for driving the beater. and the lower edge of the cap S8- is provided with a Suitable flanged ringaped member `98- removably secured thereto und forming, in connection withthe cap 8H- a channel -99- adapted to receive and collect the condensation ont-ap -U5las well as oil or other foreign mat ter which may be thrown from the cup -911- h v centrifugal force, and romthis groove the oil or other matter may lowoutwardlv through the neck 100- into a cylindrical chamber -lflI- containing a substantially diametlicallv disposed pipe provided with a plurality of ier- -103 for discharging water into the chamber to condense the vapor which is drawn through the neck -l00, thereb producing a substantial vacuum in the alg params, the pump 104- serving to ex haust a certain amount of air from the apparatus and to form a seal for the water outlet through the pipe -105-.

position,

.gageme'nt or pressing coaction with s I y1 ed with t Vmounted 1n bea* The upper portion of the chainhcr 101:- is provlded with an opening A06- allowlng access to the chamber for chaining and repair purposes.v and a removable cap -107 normally closes the opening.

The discharge pipe 53,-- is oper-ably1 connected to 4the receiving chambers or tanks -24, -24'- and -25 by means of pipes -108-, --l09- and -l1ll-. rei spectxvely, each pipe including a valve for controlling -th'e flow of the and allowing its passage to any one. of the tanks desired. These tanks are each connected to the neck s100- ot the vapor con- (lensing apparatus -tlf' by a suitable main -111- having communication with the tanks -2l-, 24' and -25- through separate pipes l l'2-, 1l3 and -114. respectively, and each of the latter pipes is provided with a suitable valve for inde pondently controlling the equalization of the vacuum between the vapor condensing up parat-us and.the respective tank, it heilig; understood that the vacuum in the condenser and in the respective tank or tanks must equalize before the fluid willflow from one to the other,

In actual practice, these tanksure used successively. so that one may be receiving the condensed liquid from the heater 455 while the liquid is withdrawn from one of the others, and the tanks are provided with tively, for admitting air to neutralize the vacuum in .its respective tank when such tank is not in communication with the nei-k -100-. From either ol these tanks the liquid may be conveyed to the tank -G. or through bypasses 30C- and #-315- may be conveyed Vdirectly to the heater -3-, respectively, withoul passing through the tank -23 or in the latter case through the heater S0- A suitable framework is provided `For sup orting the entire apparatus in operable and for convenience in operation, cleaning and assemblage.` the heater `$5- with its jacket or shell 5T- the beater #63 and parts carried thereby. and the member 50W and parts carried thereby. which parts maY be termed the centrifugal evaporating apparatus, are. as a unit, vertically movable with respect to thc rest ofthe apparatus. so that the ri ng f and casting -i6- formingy a part oi' they centrifugal evaporatingl apparatus. and

rigidly connected to the chamber m35-Y. max,r be brought into and removed from-eni the cap -88- of the vapor condensing apparatus B9- all of which remains stationair)v upon its support. To accomplish this result. the

osite sides of the shell 5lare pronnions -12 suitahly ing blocks 121-5 which condensed fluid' blocks are vertically slidable between upright grooved members --1' upon the inner sides oi' spaced posts --l'lr-, which postspin this instance. arc lornled of chunnel or U shaped metal liars oi suliicient length to extend above the vapor condensing apparatus S9-v and to curr),`- a suitable, cross frame -l2-` disposed above the vapor condensing apparatus and secured to the posts disposed upon opposite sides ot' the centrifugal evaporating;r apparatus hy suitable bolts M125. which frame in turn carries bearings 126- l'or the shalt e925- carrying the' gear 4234- and hearings --llT- for the shaft QG- carrying the rear --S)5--.

i The blocks -ll are supported by rods 12H vertically disposed between the posts 223W and havingr their lower ends ti'ireaded and engaged with suitable internally threaded gears -1$.l-, rotatably mounted upon castings -]30-, secured to and between the posts 423- by means of rivets, bolts. or otherwise.

The gears F129- ure adapted to he rotated in unison by suitable gears 1$l1 mounted upon a shaft l3- journalled iu brackets l31l carried b v the castings A30- The shaft "--lifhas operabktv mounted upon it a gear 743% adapted to mesh with a relativelyv small gear -135- mounted upon the end of a shaft r1236* journalled in a bracket -13T- mounted upon one o'l' the posts 4123- and in a bearing -l3tamounted upon a brace 100 liillextending upwardly and inwardly from a base "lul-Ilm to engage one ot' posts 12Il-- at a point adjacent the cap 458-- of the vapor condensing apparatus @S9- The corresponding onc of the posts 123- 105 upon the opposite sido ot' the centrifugal evaporating apparatus is provided with a "Inilar brace -li9- rising from a similar base --l4U-- and in like manner extending upwardly and inwardly to engage the post ,at a point adjacent the ca --258 of the vapor condenser S9- hese braces are connected at their bases bv a suitable transverse har -l1-.

The shaft M6-- is provided with a Suit- 115 able handle -Mi2- for rotating the `saine. thereby in turn rotating the shaft 132-1 the gears -ll1- and thereby the enacting; gears -19 for simultaneousl)v raising or lowering. as desired. the blocks 121- to 120 raise and lower that portion ot' the apparatus, which may be termed the centrifugal evaporatiug portion. into engagement or pressing coal-tion with the cap S8- of the vapor condenser r8.9.

A Asuitable framework is provided for supportinlgr the chamber l01- ot' the vapor condensing,r apparatus, one side of which framework is shown in Figure 3, the frame.- wt i; toon the opposite side. being identical X80 ,operably carried by a post l2-3 therewith, and comprises n suitable vertical post M3- carrying, in connection with post -123-l longitudinal bars` N1M. :ind suitable obliquely disposed brace bars -145 extend from posts -Yl23- to the post JH- The ebzxznber mliil-vis provided with suitable brarkets -l4tand which engage the upper longitudinal bar -IMM and are set-tired thereto by bolts, as shown. or otherwise. The opposite side of the flamber 10U-w from that shown in Figure 3 is provided with imitar brat-kots su )orted upon a similar structure.n

i'heli the renti'ifugal ciapoisiting npparatus is moreil downwardly to such :in extent that the casting --86 and ring m85- ot the apparatus are disengaged with the cap -88- and the shaft '-(54- of the beater is withdrawn from the bearing -6-, snitable mechanism is provided for tilting the centrifugal evaporating apparatus upon its trunnions -IIL- to permit removal ot the beater from the chamber --3:'i--, This mechanism comprises, as best shown in Fi rures 3 and 4, suitable bars -14b" eacg'h having one end eonnected to the member -5(l-. of the rentrifugal evaporating ap Jav ratos. upon substantially diainetrically isposed points, and having their opposite end portions bent. at substantially right angles to the body of tliebzir and provided with threaded openings for receiving threaded shafts -14 suitably jonrnalled upon brackets -1it carried by the brace bar -145- and its eorresponding member upon the opposite side of the apparatus, respectively.

These shafts are rl (ridly connected -at their ends to suitable bevel ed gen WMU mesh-- ing with other suitable bevelied gears -15U- mounted upon a shaft -1iilfurried by the brackets -l-i=`5-- and upon which shaft a suitable sprocket i132m is mounted, operably connected by chain or otherwise to a second sprocket -lu mounted upon ii shaft -154- journalled in a benring M5- The sprocket M153m is adapted to be rotated by a suitable handle -15f3- for transferring rotaryY movement t0 the .sprocket -152.

the gears -l49- and -i5|lfor turning the shafts -l4T- thereby longitudinally moving the bars -146 as desired, either to tilt the apparatus from vertical position or to return the saine to vertical position after tilting.

The operation of thc condensing apparatus is follows s--The movable portions of the apparatus a'e pnt in operation, including means for rotating the pulley -9T-, whereby the beater -zis rotated within the heating chamber 735ithe puni p is started exhausting air from the vapor condensin a paratus, as likewise the meclianism or orcing Water through the perfothrough the pipes www, and the condensation upon the surface of the heater -35--, whit-h would tend to insulate the same and prevent the maximum heating ell'ect of the steam, is --H-, and is eentrifugally thrown outwai-diy by the rotating steam, and drops to the bottom oi' the chamber where it is discharged through the pipe {525-. An air entering with the .steam escapes throng the air vent -t'.

The mili( is allowed to enter the chamber or heater *35;- throngh pipe 2l--, and the amount" admitted may be controlled by the valve 23--. The milk passes upwardly through the spider -6T and by the ra id rotation of the beater, embodying the p ate 76, is caused to move in a layer upon the interior surface of the bottom ofthe chamber 3.5- and begins to move spirali up the side of the heatinir chamber in a liiyer due to the necessity o? passing through the narrow space between the edge of the plat/es T6- and the interior surface of the heater -`35-, and due to action of the u right bars holding it to the outside by centri ugal force. The ring disks -77- not as dams and, in combination with the centrifugal action of the beater, compel the milk to flow rapidly in a succession of thin tilms as it passes spirally upwardly upon the interior surface of the heater h-m As a specific instance; when the milk passii g in a layer along the inner surface of the vlizfmber or heater 3- becomes heated to :i temperature of 1260, being in a vacuum, approximately :35" to 26 in mercuryI it n'ill boii andlose a portion of its water constituent. the amounted' Such portion depending in i machine of predetermined size upon the quantity of iniik yforced through the machine in a given time. When the condensed milk reaches the top of the ring member www, it Hows over into the liquid receiving channel between. the upper edge ofthe member t9- and the section *5U- and escapes through the pipe -:'3- into one of the rerei ving tanks -2^1h,--24-or-25.

The vapor is drawn inwardly and passes upwardly through the central opening in the ringshaped disks --E'TA- and into the condensing chamber *101- where it oomes in Contact with the .sprays of water projected by the pipe -l02- and is condensed. The bubbles which form inthe liquid in the heater are. broken up by the imaterk'eutrifugally separating the vapor :uid liquid, and the vapor contained in them is released and is drawn inwardly and escapes upwardly through the openings in the ring-shaped disks 77%, whi'le the liquid portions of the bubbles carrying the solid constituents of` the milk are thrown centrifugiilly back into roilected upon the drip rings the liquid. quantities andpassing u center of the heater with it any small spa beater, and 1 is interposed betw the central openi the outlet S3-f, against which pinges and around u in its escape am inl turn deflec T h e'liquid .Qiiatters o the -phite -90 and are thrown the hood pass lect upon centrifugally outward against 8l-f and flow downwardly along the hood The vapor has ii forminpr iii large pwardly through the tendency to draw a minute and a quarter, during is moving rapidly and is subiected to a unliorni temperature under uniform conditions.

tters which escape the One of the fundamental features to which for this reaeon the plate 90- the advantages ot' this invention may be at.- een'the passage formed by tributed is that the milk material against nge in the disks -77- andr the surface of the hea-ter 35 is always through the` flanges 552- and liquid, and has not reached the boiling template the vapor linperature, the hotter liquid with its bubbles r spits and are thrown centrifugiilly from its tom int'o -the liquid receiving channel the escape of the fluid int'o the condenser if4 By spreading over the entire interior surface o ber 35,

possible an even heat and is l temperature vfor evapora to the. nec

tion.

As an i diameter o dianieter,--that is, one interior diamete that the edges o stantially a quarter ot an iiicli terior .surface ol" under the centri caused to flow in successive ie distance between the edge r surface ing; in dep tween the upper edge o and the section 5osize of chamber the chamber may be 24 and the disks Y-TT-=" w oi even mimi the milk out in a thin all of the mi ieated. essary llustration of one proportio inches ii'i diaii l the beater iiiav be 23,

half ini:

rolt 7 lthe disks are vspaced the clizinilier. l'ugaliu'tion ot' the bezit filmtv` not ext tli tl TT- and' the interim hit-h the 4vapor mustV .l by which plate the ted against the hood t the member By this construction tely eiiiall quantities prevented.

the chamlk reteires nearly hicli determine the l inches in li lees than the lie chaiiiher h5-- from the iu and the milk immediately moving radially inward from conte-vt will: suoli surface, While the heavier cooler liquid ie thrown radially outwardly, due to the centrifugal notion. The liquid is not vonly subjected to a rapid mechanically forced-movement, but the nature/of the force and the movement is Such that the material cannot cling to and burn upon the heated surface, due to the tact that the ebulliat'ing portionl of the liquid are immediately displaced and moved inwardly fror'n Contact with the heated surface by the heavier cooler liquid 1which has not yet attaine( temperature.

in the opera ratos? the. cooler portion Continuously moved into and held in contact with the heated surface, as distinguished from the known commercial apparatus and method which embody no forced mechanical movement and in which the hotter poitions .of the liquid remain in Contact with the heat.-

ed surface When bubbles'. are in contact with the effective heating; surface, iis when the liquid in contactivith the heated surface boils, it is practically impossibleto talielthe heat away fast enough n) prevent scorchiiigo'f the nia-i terial. The method herein elimiiiateh` such scorching ot the. material by continuously, and immediately uponthe foriiiat'ion of bubbles, displacing the Stime by other portions of the liquid-Which here not yet reached the im. be-

fillli tion of thin` method und appa.v

' s of the liquid are only nate

of the chamber 5a while the, inner kiurboiling` temperature? face of the milk between the disks takel sull- On account of the. action of the beater as Stantially the torni of a parabolic curve, deeg-.rbed und the mechanical freeing of the i illustrated diauran'iniiitirally in Figure ll. exhaust vapor from Spetters. there is a matewhicli curve gradually 'iiiireiises in radial rial saving in the amount of I nilk recovered. length toward the upper pai't of thc r'ciitiil`\:- The centri fungal i'aporarting apparatus gal empor-ating apparatus, However. it i5 may he mixed, lowered and tilted to permit apparent that the propo tion, noun-fi are removal ol' the bea und for other purmerelv illustrative and' my be widely varied poe-us as deofrilied. The extent of condenwithin the ecopc of my inventionA dition, as hel'orc dricribed. is controlled by lut a mail quantity ol Sill( is, cout-animi ilu` amount of mili: allowed to enter the in thc appurutui at one time` and the opi-rnappui-Him; Til more milk, the more raption is continuum. milk being admitted to idly ilu,k iii'illt mouw through the apparatus and diuifhzirgfed from thi apparato# ut All :rrd tliiI li-l it i4 coiflrnecd,

fiuitiiiiiairr ol lili` opciii- The niaiiuiiicturr o1" high grade milk protinies dui-iupv thi;

Vv'ith au apparatus tion.

shown ari-l drie:

has4

Chamber tyi'entyfou a vertical inches. 'it 'i milk to a si remains in in whit-li thiJ of mibsteiit i'ilied.

i'liziiiieter and iii whirli the in ally fortyr inr'hr How of xubetiiiiti ,5 found that in condeiisiu ratio ot 3 or z-oiistruf-cd a, heid ing 4 to L the materia the apparatus ier approximately stoof iliiwcil by tl which time it cury, the vacuum vused in l products of in vacuum or non-vacuum practican being from 23"v to"26"`, correspond-ng to a milkva rizing temperature of V144" to 120` ov far as the ap rata@ is' concerned, theA same may be use in the production of certain V:food and 'perha' milk erior grade, without t e utili- 'tation of any vacuum whatever, andcertain of-theclaims are,therefo1'e, directed to novel silbjechmatter of the apparatus without limitation as to its operation in carrying out a, process.

Although I have shown and -described one specific formv of apparatus and detailed coul struction thereof as, perhaps preferred, I do not desire to limit myself to the details of form, construction or arran ment as various modifications, substitutions and' omissions maybe made without departing from the spiritof the invention as set forth in the appended claims. Y

What I claim is:

1. In a condensing apparatus, a container of substantially circular cross section, a rotn rbeater within the container, a, vapor onli-let from the container and a deflecting hood mounted on and rotating with the beater disposed adjacent the vapor outletfz 2. In a condensing apparatus a container of substantially circular cross section, a vap'or outlet from the container, a rotary beater within said container and comprising a'driving shaft, a series of disks having aligned central o ings, a series of vertical bars secured to t driving shaft and oper- 'ably connected 'to said disks and a delecting plante adjacent the vapor Aoutlet and aligned with central openings through said disks.

3. In a condensing av paratus a container of 4substantially eircu ar cross section, a vapor outlet from the container a rotary beater within said container and comprising `a driving shaft,a series of disks having aligned central opening' s and a series of vertical'bars Secured to the driving shaft and operabl connected to said disks, a deiecting pilote a jacent the vapor outlet and aligned with central openings through said disks, and a deflecting hood spaced from and surrounding said deieeting plate.

,4. In a condensing apparatus a container of substantially circular cross section open at one end for the escape of vapor, Va rotary beater within the container, an annular collar mounted at the outlet end of the con.- tainier and having an inwardly projecting flange and a hood mounted upon the beater and' having amntractied end disposed within the said Hengel.

5. In a condensing apparatus a.V container of substantially circular cro section open at one end for the escape of vapor, a rotary beater within the container, an annular collar mounted at the outlet end of the container and having an inwardly projecting flange and a hood mounted upon the beater and having a contracted end disposed within the said flange, and a receiving trough ad jacent the upper end of the container and substantially Cut off from the vapor outlet by said hood and collar.

In witness whereof I have hereunto set my hand this i2th da of November 1915.

inviilo s. MERRLL. Witnesses:

E. A. THOMPSON, M. VIOLA Hownnzm,

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