US1798652A - Cooling unit for refrigerating systems - Google Patents

Description

March 31, 1931. I M, oo-m 1.198.652

COOLING UNIT FOR' REFRIGBHATI NG SYSTEMS Illad'Enh. 13. 1930 2 Shuts-Sheet 1 INVENTOR Zrrrz'sffliaoih BY Z ATTORNEfl March 31, 1931. M BOOTH 1,798,652

COOLING UNIT FOR REFRIGERATING SYSTEMS Filed Feb. 13, 1930 2 Shuts-Shut 2 INVENTOR orriZBooZh f; M

ATTORNE Patented Mar. 31, 1931 PATENT OFFICE- UNITED STATES This invention relates sohcooling units for refrige' an as to "cularly w i tli ii of the 811mm and provided with a suitable header.

resent inmfiofi isaa'7continiiiilatiopulin part0 my a cation 0. 8,843 y 17, 1929, will mainly directed to novel improvements in the fabrication of the complete sheetmetal unit and in the details of the novel in com leted unit.

a single outlet connected wit respecifically, it isthe object of the present invention to row a coolin unit refembly formed 0 a single sheet 0 meta the header and side walls of which are completey fabricated and formed prior to shapmg e unit. In this case, the header and float chamber and the side walls are preferably stamped from sheet metal, one or more of the side walls being corrugated and. the con portions between the corru tions being w ed r rior to distortion.

Another important eature of this invention "des in the manner of fabricating the unit whereby the side walls which are formed integral with the head and which lead therefrom, are positions above the point at which the ends of the side walls contact with the header. This not only results in marked efliciencies in the operation of the unit but also results in a marked saw in hi and fabrication. The sidew which lea from the upper part of the header are referably provided with a plurality of inle but the ends of these side walls and garticularly the corrugations thereof prefers 1y terminate in a manifold which in turn ma terminate in the interior of the header. This results in much stro r header construction, and particularl res ts in eifecting a positive circulation o the mfri rant.

her features reside in the details of construction as will be more clearly brought out in the specification and claims.

In the drawings:

Fig. l is a perspective view illustrating the form of the unit after it has been fabricated and preparatory to being sha d.

Fig. 2 is a perspective view ustrating one manner of forming the unit shown in Fig. 1.

Fig. 3 illustrates a inodified construction wherein the fabricated side walls are shaped to provide a plurality of shar freezin chambers P K F g. 4 1s a pers ctive view illustrating a modified step in e method of manufacture wherein the complete unit is formed from two preformed halves.

Fig. 5 illustrates the preferred manner .of positioning my novel unit'within a cabinet.

Fi 6 is a perspective view illustrating a mod ed form of the invention wherein the unit including the header thereof is fabricated from two preformed sheets of metal, the two wings and the entire unit being welded together before being bent into shape.

Fi ii. 7 18 a front elevation of a further modi ed form of the invention wherein the return side of the passagewa formed by the sheet metal sections termina at the bottom of the header.

Fig. 8 is a somewhat diagrammatic view illustrating a unit embodyin the features of the resent invention but a apted to be utilize in conection with a refrigerating system of the dry type.

The present unit may be fabricated from sheet metal into many difiere'nt types and shapes of cooling units and for this reason the drawings must be considered as more or less diagrammatic. Re rdless of the form of the coolin unit I pre erably fabricate the same from r atively thin iauge sheet metal. In order to ermit of quic and inex nsive assembly, t 5 sheet metal is pre erably shaped to provide a flat side 1, a cor ted side 2 and a header portion or drum It will be understood that both the sides 1 and 2 may be corrugated if desired, but in the simpilest form only one side need be corruate g The sheet metal blank is preferablyinitially formed by stamping out the header or drum 3, the corrugated portion of the side wall 2 and then folding over the same as shown in Fig. 1. The corrugations 4 in this side wall preferably terminate in a manifold 5 and this manifold 5 in turn terminates, in a suitable connectin conduit 6. There may be one or more of 51888 conduits 6 but one is all that is nry, as will be later explained.

When the two side walls shied gether, as shown in y pre ere y are inserted in a stitching machine or other form of welding machine and the contacting iaces of the two side while be tween the corru ations, suitably secured together. The si e walls may then be gradually bent. so as to form the complete coohn unit and in Fig. 2 I have shown one form so bending the side walls.

In forming the unit the side wall immediately adjacent the header 8 is preferably bent at an angle as at 7, then bent to form the side wall 8, the bottom wall 9 and the spaced side wall 10. In Fi 2 the walls 8, 9 and 10 form three sides 0 the unit, and the bottom part of the header and the inclined walls extending from the header formthe fourth side. The walls of the header 8 are preferably imperiorateexoept at a point 11 where the conduit 6 is c to the interior of the header. The and 12 of the two wallsl and 2 may, if desired, be welded to the outer surface of the header 8 but due to the provision of the manifolil 5 the ends of said walls are not connected with the interior of the header.

The point 11 at which the conduit 6 en here the header 3 is preferably at a lower level than the level at which the corrugations 4 lead into the header 8, but both the level of the outlet conduit 6 and that of the inlet conduits formed by the corrugations 4 are preferably below the normal level of the liquid within the; header.

In Fig. 8 I have illustrated a.slightly modified form of construction wherein the bottom wall is bent to. form three separate sharp freezing chambers. In this connecti on. it will be obvious that after the side walls are formed, as shown in Fig. 1, they may be shaped in substantially any manner desired so as to form shrugs freezing chambers completel surround by refrigerant or only partia y surrounded refri rant.

In abricating the originals sets 0 metal before distorting the sides to form the cooling unit, I ma. form the sheets in two integral halves, as est shown in Fig. 4. In this case the one half may be generally designoted 13 and the other half 14, and it will obvious that such two halves may be stamped out and fabricated to form the same relative unit as that shown in Fig. l. The onl exception would be the fact that the has or is formed in two parts with the result that the halves 15 will have to be welded or otherwise secured together. It will be obvious that the point at which the header is divided may be substantially any point in its circumference so that this method of fabrication greatly assists in forming the inlet 11 to the header.

The main feature of the form of construction shownin F 4 isthe factthattlieeh tire unit is to from only two halves each of which may be integrally stamped out and W h 11;. 1H s r s t" n ops on y aces e two v i fls are secured 4 her.

In Fig. ii I have illustrated the preferred manner of mounting my novel un t within asuitable refrigerating cabinet. By 'tioning the unit in the manner shown, it will be obvious that the circulation of air past the side 8 will materially assist in the va rizatiomof the li aid in such side wall with the result that e vaporized refrigerant will rise and enter the header 8 and will in turn be replaced b li uid re rant which, will flow outwar y conduit 6 and around the passageways of the cooling unit. Inasmuch as the outlet of aseous refrigerant born the header is lilni by the sine of the exhaust passagewa or the exhaust valve, it will be obvious t tthe outlet conduit 6 need only be approximately the same size as the gaseous outlet in the compressor. It will thus be seen that it is only n to form a single small opening 11 in the header 3 which wjll reduce the possibility of leakage to a mmmium.

In Fig. 6 I have disclosedthe manner of formin a coo unit somewhat along the lines o the unit used in Fig. 4, in that the entire unit is initially formed of two sheet metal stamping. The u per stem ing may be generally designated 1; and maylionsist of the semi-spherical header portion 17 and the two 18 and 19. Each wing is preferabl provi d with a series of corrugations 20, hose corrugations terminating in a manifold 21.

The lower half may be generally designated 22 and preferably consists of a semi-spherical header memberflh together with the flat wings 24 and 25. In assembling this unit, the two halves 16 and 22 are positioned together as shown in Fig. 6, and each wing inserted in a suitable stitch welding machine. All that is necessary is to stick each win in such machine and feed the wing in as made longitudinally in between each corrugation 20. The pockets 26, formed at points adjacent the headers by the corrugations and the manifolds 21, may also be utilized in effecting a final welding or joining of the two sheet metal halves directly adjacent the header member. As the parts are secured t0- gether in the manner illustrated, the two wing members may be bent as shown in dotted lines so as to form the sharp freezing chamber. If desired, it will be obvious that the wing memhere may be somewhat lengthened so thatthey may be bent in the general form shown in Fig. 3.

A further modified form of construction is illustrated in Fig. 7 wherein the header is e stitches are formed in one ieee ae ehown, in Fig. 1 lint sheet forming the 1 way: ie no formed as to terminate in a verbit tad' tthbott the f I a In, men e om m," ln l elilliave shovinauuit of substantially ienticnl 11min in Fig. 2 but inverted so as to be nmeen which preferably enters the header below construction, to the unit readil eda to'arefri a eyetemof chamber PM In thiffi fiilreltion. the

the ry t conduit 6 en era the header 8 in the some man ner as shown in Fig. 8, and'the intake conduit 80 for the mcom1ng m the one eat of-. the unit will the bottomof the header 8 betion when it will e suction line ot the next cycle. The enchon line tioned at the bottom of the header 8. g5 IneaehofF' 1to7,ltwillbeun(lersot theboiler or evaporator may he'cloeed being tgsmerally indicate; in Fi tale.

It 'be obvious thet'in ron lease or stem m ll h Pad 86 yr ch'is formed 0 6 and 7 whereby if one oontiglm' as wall or the example shown in-Fi ch18 reseed metal blanks and welded at the boiler. The case erefore,eoconstructe d have the test tendency. to resist a'll emupon by reesure within or Furthermore, e aaeegewa metal or hem-siphon efl'ect. I

What claim is: i g

1. A cooling unit formed of sheet metal,

- comprising a substantially cylindrical header w terminating in two being bent to form and chamber s er in said walla an g at eader for eon ducting refrigerant, a m'enifold at the end'of to said walls for dcolin theemgeof amagewa an means connecting mnm old with th: interior of the header.

2. A. cooling unit formed ofeheet metal, comprisinga eubetantielly cylindrical header ca terminatingoint'wo spaced walls, aa id walla bein bent forni'walle of a sharp freezing :1:

er or con nc geran 1; a manifold at the end -of eaifl ane for heating de of the passageways and the Jo gin an at 82 and preferably is posinect le cape, the front elo h a suitable header cap as receive the intake and exhaust valve etruc each case have d -metal' eader or bollerchamber of land 8, 18 mil aced'wcll eaidjalhi- 'de bzttom walle in inthe Aeoolingnnitolthotmha metal header-and a shar V formed of yalle fabricated to rant ways, tlie end of one \vall' i "W a ee eva rater m tie in outer one-piece shell rtion and laterally ammo: walla t to form a freezin her or cham- 1- t $3 comemen orm esgoqt e 't ieofmg grovide Illa we tmetal he l l oe ova r oom an outer one-piece hell tion 11nd late ,eaid two'arcuate porbemmn 58. 1%? to f '5 or one o sa'l mu wells bein fembmd m Krovrde \yaye m1 e mm l 'er,an.a orm moneo Bar Walls and transversely of-the pasways at a pointadjacent the-header.

A aheet metal evaporator outer-and innerahelle iabncatedtoeac form .a rfion of a cylindrical header and laterall; and downwardlg depending side walls one of snid'eide val being corrugated anti said co'rru time openatoneendto permit wePing tl1e in epaeee between thenhm nidweldedside 7 we" at Go ,.u.' e g i tfi eideemdbotmm the! betwee n tfie a m 'onewh t from o nheetmetelqvepormeom "gheaderiambetmti outer end inner newsman-410cm then bending mew; mew

' w in 5 manifold po'lifi rt1 onofuey ol-lheederuid hawtheiemofnnevepontor theeidew'llla ing side 1 m e of aid it being aeeled by weldingtoge'ther the edges oorrugl ln eudbemgopm thereof. gtoneendmdhrmmgfllelfend 18. The proeell of mk'mg e gheet tel a the evaporetorgwhieh ooneietain I. web- 7 e hndrieel heldertn permit (hug the stantiefly eirenlu' header porlionwi late:- am in the s leen thenallyextending side walls end hterdlly em iombmbhQquduelMnde tem hng ooirqget'lonsiu one well, said outmormbtg udes em! bottom gitlqns openlpg n! one end into the we:

comprising outer and endoitheeidewell mpemn oem; one eoqgilntogethereothetueuateporhonsoflhe r and butler register, wekling the side well totoioun ude gather on between tie eormgntiona PW gzthenetertapg 'a from from the helder, and a on-ag e! min 6. de: well, mto the m e en en rotor, 25 extendingtransvemely-eemeeiqfintmmefl the side walls being seale by toco honeend spaced "hor dmteneqhom .gether the ed'gee thereof. mid der, the-two wells being aeeuged to- 14. A sheet metnl ooo'fing unit of the .gether'in the speeesbetweenthe-oon gefiens; floodedtype eomprisin e hquid end, gee 10. A 9100888 0 mnking m eveporltm for chamber, conduits fox-me" by m exteniion of :0 e reh'igerfltor fromtw'o eheeteol m which material formin'gthe chamber and extending u consists in forming eomplemen I der froma ointalongone side thereof and 5mmdepressions in a; portion oi eaeh eet M111 wud 1ytm1efinee freezing lnterllly extendmg I onefieheet, eeid corruga ions o emng' et one from a int where said eonduite lesdfrom' 55 end into said header rfion end te -wading the w thereof q nmu'llolrl conn cting the m.

' of ma shee eupe1' ends oi said oomimte and e omrlm t onnedim oeing sent eheets so that potin; said menifold math and o enmg in the tionn re mter, welding the beets toget er on and ehlmher. lines between the eon-options,- and that 15. A sheet meta-1 enporltor .40 bending the 'ahoeia thuseeeemr er apto outer end-inner shells fabricated toeee form 1 the form of en evaporator, the eete er porli li'ndnenl head r, edieeent eeeled by weldingtogether the edges thereo header oo L end 11 A process oi'meking m evlporltor for end m allay ereh-lgeretortromtwo sheets of metal whih dnenlhelderJ yextm eo sistfl in forming com lement"? heeder an said I depression! in the eentnl portion of ysexten into sheet and laterally extenfing ea-db eonjne117 extending gationa in one sheet, aid corrugations openther around the ing at one end who said header rtion and e spew n0 termineting near the opxosite "of adjacent the header ed 1! sheet, mperim oeing sol sheets the't the e walls being bent vet-d1;

header portlo r; welding the sheets between the corrugations end ,together on lines the co nu etepomt speeediromthe hemertoforme and around the ed end then bendmg the freezmgfchamber, and

e sheets thus secured together into the form of memiold extemlmg when a] 15o l e a l1 EV I.

mm mmofmmnguheetmm aeidfiretnemed evepontor, which consists in to l eub- 1B. 4. ooling umt 00mg eeymmetstan'tielly circuhr header portion wi later.- rloal pleoe of motel-folded upon meal! on subally extending side walls end lateral y exetentlellz center transverse line, the two a tending eorruglfions in one well, said eon'uo the sheet beingiepeeed at the line getione o emng' at one end into the hood?, of old to form n header and the remunder e aide the o e 4 end of the side wall. su erim oaiqg kg their edges, into w ys formed in wells together sothat areuete portmns of the at least one mg m extending from and m header to near the gpgosite side of said unit, said wing portion 0 t e unit fo at least two sides of a sharp freezing cham r and means for closing the open ends of said header.

17. A coolin unit of the flooded comprisin a float amber the sides of w 'ch are orme of contiguous sheet metal walls, one of which is corrugated said walls meeting and contacting except for said corru 'ons and extending laterally from one si e only of the chamber and then downwardly to form refrigerant assageways and at least two walls of a re igeratinf chamber.

18. A cooling unit 0 the flooded t ,comprising a header chamber substantia {cylindrical in shape, the drum of said 0 amber formed from a single piece o! sheet metal, said piece of sheet metal meeting and continuing as adjacent walls to form the sharp freezing chamber of the unit, said adjacent walls being permanently secured together and formed to provide passageways for the refri erant, and said walls extendmgdownward y and outwardly from the float chamber so as to provide inclined assageways for the refrigerant, and then ownwardly to form an outer wall of the sharp freezing chamber.

In testimony whereof I aflix m si ature.

MORRIS F. O

header to near the opposite side of said unit, said wing portion of the unit forming at least two sides of a sharp freezing chamber and means for closing the open ends of said header.

17. A cooling unit of the flooded type, comrising a float chamber the sides of which are i ormed of contiguous sheet metal walls, one of which is corrugated said walls meeting and contacting except for said corru ations and extending laterally from one si e only of the chamber and then downwardly to form refrigerant assageways and at least two walls of a re rigeratin chamber.

18. A cooling unit 0 the flooded type, com prising a header chamber substantially cylindrical in shape, the drum of said chamber formed from a single piece of sheet metal, said piece of sheet metal meeting and continuing as adjacent walls to form the sharp freezing chamber of the unit, said adjacent walls being permanently secured together and formed to provide passagewa s for the refrigerant, and said walls extendlng downwardly and outwardly from the float chamber so as to provide inclined passageways for the refrigerant, and then downwardly to form an outer wall of the sharp freezing chamber.

In testimony whereof I aifix my si nature.

MORRIS F. BO TH.

DISCLAIMER 1,798,652.M0rr1ls F. Booth, Chicago, Ill.

SYsTELrs. Patent dated March 31, 1931. the asslgnee, Mu l'ins Manufacturing Oorpor Coonme UNIT non REFRIGERATING Dlsolaimer filed August 8, 1931, by

Hereby enters this disclaimer to claim N o. 5 in the said patent, the said claim being here quoted as follows, to wit:

A sheet metal evaporator comprising portion and laterally extending side wa chambers, an inner one-piece shell having an opposite] laterally extending walls cooperatin with the side we an outer one-piece shell having an arcuate s bent to form a sharp freezing chamber or formed arcuate portion, and s of the outer shell, said two arcuate portions registering comp ementally to form a substantially cylindrical header, one of sald laterally extending walls being embossed to provide passageways leading from said header.

[Oficwl Gazette September I, 1931 .1,

DISCLAIMER 1,798,652.M0r1-s F Booth, Chicago, Ill. COOLING UNIT FOR REFRIGERATING SYSTEMS. Patent dated March 31, 1931. Disclaimer filed August 8, 1931, by the assignee, Mu lins Manufacturing Corporation.

Hereby enters this disclaimer to claim N o. 5 in the said patent, the said claim being here quoted as follows, to wit:

A sheet metal evaporator comprisin an outer one-piece shell having an arcuate portion and laterally extending side wal s bent to form a sharp freezing chamber or chambers, an inner one-piece shell having an oppositely formed arcuate portion, and laterally extending walls cooperating with the side walls of the outer shell, said two arcuate portions registering complementally to form a substantially cylindrical header, one of said laterally extending walls being embossed to provide passageways leading from said header.

[W Gazette September 1, 1981 .1

Images