SE100740C1

SE100740C1 -

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Publication number: SE100740C1
Authority: SE
Publication date: 1940-01-01

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PATENT N9.- 1007 SVERIGE KLASS 17: b: 2-06 BESKRIVNING OFFENTLIGG3ORD AV KUNGL. PATENT- OCH REGISTRERINGSVERKET BEVIDAT DEN 28 NOVEMBER 1940 GILTIGT FRAN DEN 11 FEBR. 1938 PUBLICERAT DEN 28 JANUAR! 1941 Ans. nr 81211938.Härtill en ritning. PATENT N9.- 1007 SWEDEN CLASS 17: b: 2-06 DESCRIPTION PUBLIC WORD OF KUNGL. PATENT AND REGISTRATION AGENCY PROVIDED ON 28 NOVEMBER 1940 VALID FROM 11 FEBRUARY. 1938 PUBLISHED ON JANUARY 28! 1941 Ans. No. 81211938. Here is a drawing.

SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM, FINSPANG. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM, FINSPANG.

Isgenerator. Ice generator.

(Uppfinnare: E. Oman, G. B. Ax och X. G. E. Engqvist.) Vid koncentrering av losningar genom frysning eller vid koldackumulering genom losningsmedlets (t. ex. ILO) partiella utfrysning ur en lOsning skola stora mangder kyla overfOras fran generatorns kylytor till losningen. Det r i dessa fall synnerligen viktigt att ytorna effektivt befrias fran bildad is, ty i annat fall hindras kaloritransporten, vilket kan Ora sig gallande i synnerligen avsevard grad. Tidigare liar man anvant generatorer med kylbehallare i cylinderform med invandig eller utvandig skrapning av ytan for avlagsnande av bildad is. Denna anordning i olika utforingsformer liar anvants for tillverkning av forbrukningsis genom frysning av rent vatten. For (.1.etta andamal kan man manga, ganger ntija sig med dylika anordningar, dels darfor, att mangden is, som i detta fall shall tillverkas, Or fOrhallandevis ringa, och dels darfor, att i detta fall kylbehallarens anskaffningskostnad ej spelar sa, stor roll. Annorlunda blir forhallandet da det •ár fraga em att genom frysning koncentrera losningar, I. ex. sulfitlut eller havsvatten, det senare i och for saltutvinning. 115,rvid ar det mycket stora kalorimingder, som skola overforas till losningen i generatorn — I. ex. flora miljoner timkalorier mot nagra hundratusentals timkalorier vid istillverkning av ovan antytt slag — och i dessa fall ban man ej utfora anlaggningen med cylinderformiga kylbehallare, ty delta skulle krava orimligt stor plats °eh bliva, alltfOr dyrbart i anskaffning. (Inventors: E. Oman, G. B. Ax and X. G. E. Engqvist.) When concentrating solutions by freezing or in case of carbon accumulation due to the partial freezing of the solvent (eg ILO) from a solution, large amounts of cold must be transferred from the generator cooling surfaces to the solution. In these cases, it is extremely important that the surfaces are effectively freed from formed ice, because otherwise the calorie transport is hindered, which can be very debilitating to a very considerable degree. Previously, generators were used with cooling tanks in cylindrical shape with internal or external scraping of the surface for depositing formed ice. This device in various embodiments has been used for the manufacture of ice cream by freezing pure water. For (.1.this occasional, one can many, times ntija oneself with such devices, partly because the amount of ice, which in this case is to be manufactured, Or relatively small, and partly because, in this case, the refrigerator's acquisition cost does not play so, The situation will be different when it comes to freezing concentrations of solutions, such as sulphite liquor or seawater, by freezing, the latter in and for salt extraction. For example, a flora of millions of hourly calories compared to a few hundred thousand hourly calories in ice-making of the kind indicated above - and in these cases the plant was not to be lined with cylindrical cooling tanks, for delta would require an unreasonably large space, and would be too expensive to procure.

Foreliggande uppfinning avser en isgenerator, avsedd att avhjalpa de ovan angivna olagenheterna. Densamma kan anvandas saval for framstallning av is for forbrukningsandamad genom frysning av vatten som for bonbontrering av losningar av ovan angivet slag, I. ex. sulfitlut eller havsvatten, i sistnamnda fall for saltutvinning. Isgeneratorn enligt uppfinningen Ear ett flertal, foretradesvis vertikalt anordnade, parallellt vid varandra placeratle plana behallare fOr kylmedium, anbragta med inbtirdes mellanrum, vilka mellanrum Oro avsedda att upptaga den for frysning avsedda vatskan, och i vilka mellanrum finnas roterbara organ, I. ex. skrapor, for avlagsnande av bildad is fran behallarens ytor. Isgeneratorn enligt uppfinning en kannetecknas i huvudsak darav, att vane behallare an delad i tva, ftiretradesvis lika delar, anordnade i samma plan och pa avstand fran varandra, mellan vilka delar en roterbar, nam.nda organ for isens avlagsnande uppbarande axel 'an anbragt. Be namnda behallarna Oro foretradesvis vertikalt anordnade, da, man harigenom synnerligen latt och effektivt kan avlagsna all den bildade isen frail kylbehallarnas ytor, varjamte derma is, vilken erhalles som en issorja, pa grand av namnda anordning synnerligen latt kan avlagsnas frau mellanrummet mellan namnda behallare, eftersom isen flyter :app till ytan. Isp,,eneratorn enligt uppfinningen ka,n dock vara fOrsedd med horisontellt anordnade kylmediumbehallare, varvid emellertid sarskilda atgarder bdra vidtagas for att avlagsna isen frail mellanrummet mellan behallarna. Generatorns koldalstrande parti utfores alltsa lampligen i form av plana, parallellt med varandra, anordnade behallare for kylmedium, som anordnas med in-hordes mellanrum, van i frysvatskan inrymmes, och i vilka anordningar for avlagsnande av bildad is flan behallarnas ytor finnas. The present invention relates to an ice generator, intended to remedy the above-mentioned malfunctions. The same can be used for the production of ice for consumption purposes by freezing water as for bonbontronation of solutions of the above kind, I. ex. sulphite liquor or seawater, in the latter case for salt extraction. The ice generator according to the invention comprises a plurality, preferably vertically arranged, parallel to each other flat containers for cooling medium, arranged at intrinsic intervals, which spaces are intended to receive the liquid intended for freezing, and in which spaces there are rotatable means, e.g. scrapers, for removing ice formed from the surfaces of the container. The ice generator according to the invention is characterized mainly by the fact that habit containers are divided into two, preferably equal parts, arranged in the same plane and at a distance from each other, between which parts a rotatable, named member for the ice-depositing support shaft is arranged. The said containers are preferably arranged vertically, since, in this way, all the ice formed can be removed very easily and efficiently from the surfaces of the cooling containers, and this ice, which is obtained as an ice oil, can be removed very easily from the space between said containers. , as the ice floats: app to the surface. The ice generator according to the invention may, however, be provided with horizontally arranged refrigerant containers, however, special measures may be taken to remove the ice from the space between the containers. The cold-generating portion of the generator is thus suitably designed in the form of flat, parallel containers arranged for coolant, which are arranged at in-ear intervals, used in the freezer compartment, and in which devices for depositing formed ice flan the surfaces of the containers are located.

Uppfinningen shall i dot foljande narmare beskrivas under hanvisning till a bifogade ritning visade utforingsformer. Fig. 1 askadliggOr huvadpartiet av en isgenerator enligt uppfinningen i sidovy. Fig. 2 ar en sektion av en kylmediumbehallare utmed linjen B—B i fig. 1. Fig. 3 visar en sektion utmed linjen A—A i fig. 1. A's fig, 4 framgar, hum u skrapanordningarna for isens avlagsnande fran kylytorna kunna vara fjadrande fasta vid det desamma uppbarande organet. Fig. 5 Or en principskiss, visande kylmediets till- och bortforande till resp. fran generatorn. Fig. 6 slutligen vicar en annan utfolingsform av skrapanordningen, tankt i sektioni fig. 1. The invention will be described in more detail below with reference to the embodiments shown in the accompanying drawing. Fig. 1 shows the main part of an ice generator according to the invention in side view. Fig. 2 is a section of a refrigerant container along the line B — B in Fig. 1. Fig. 3 shows a section along the line A — A in Fig. 1. A, Fig. 4 shows how the scraping devices for removing the ice from the cooling surfaces can be resiliently attached to the same support member. Fig. 5 Or a principle sketch, showing the supply and removal of the refrigerant to resp. from the generator. Fig. 6 finally shows another unfolding form of the scraper device, tanked in section in Fig. 1.

Sasom narmare framgar av fig. 1 utforas kylinediumbehMlarna i tva, delar 1, som foretradesvis arc lika stora ocli likformiga saint anordnade i samma plan och pa ay-stand frail varandra. Behallarna tillverkas av platar 2, se fig. 2, som stagas med svetsade distansbultar 3 eller dylikt, t. ex. infalkla nitar, som efterat slipas for erhallande av en jamn yta. Rr underlattande av isens avlagsnande frail ytorna 2— — karma desamma vara behandlade pi lampligt satt, t. ex. emaljerade, slipad.e eller Overdragna med nagot fysikaliskt eller kemiskt medal. St t. ex. kan man tillgripa platering av platarna, exempelvis med koppar, forkroraning, fornickling eller overdragning med monel-metall. lit- efter omkretskanterna fastsvetsar man en platstrimla 4 eller dylikt, varigenom en sluten be-Ma'am erhalles. Det inre aystandet mellan platarna 2 valjes lampligen att yam a:a 10 eller 20 mm. Kylbehallarna kunna hava godtycklig form, namligen sä, att de bada halvorna tillsammans i huyuclsak bilda en cirkel, rektangel eller manghorning, lampligen en sex- eller attahorning. Denna form dr synnerligen lamplig, dels fill den synpunkten, att man harigenom effek-tivast kan utny-ttja jarnplaten, varur man utskar de for behallarnas tillverhung avsedda platarna, dels fran den synpnnkten a:tt man darigenom Mr god stagning i varje behallares hornpunkter, utan att dessa stagningar hindra skrapornas passerande Over hela ytan i och for fullstandig renskrapning av ytan. De hada behallarehalfterna anordnas pa ett visst avstand fran varandra (i fig. 1 betecknat med a), men som sagt, i sam.ma vertikalplan och bestrukna av samma skrapa eller skrapor. Tva sadana halvor bilda tillsamnaans ett »stall», och tack vane mellanrummet a mellan de bada halvorna kan man int infora axeln for skrapornas clrivande i detta mellanrum. Ett dylikt mellanrum am fordelaktigt vid monteringen och demonteringen, ty, da, ett dylikt mellanrum forefinnes, kan man latt, sedan behallarn.a am fixerade i sina lagen och inmonterade, nedfora eller upptaga en axel med armar och skrapor, utan att behova rubba behallarna. Detta Or en. myeket stor forenkling, ty sa, fort man maste rnbba behallarna, am man oaks& tvungen att avlagsna kylmediet samt bryta ledningarna f Or detsamma, vilket am synnerligen besvarligt.- Detta mellanrum mellan de hada, generatorbehallarehalvorna, van i axeln an placerad, gores lampligen vertikalt, d. v. S. varje behallare dr lampligen delad i tva halfter av ett vertikalplan, sã att axeln med armar och skrapor 'Eft ka.n nedforas vid monteringen. Dock moter det inga hinder att dela varje beh.allare i tva, pa nagot avstand flan varandra anbragta halfter ntrned ett horisontellt plan eller ett mot horisontalplanet snett forlOpande plan, om man av flagon anledning skulle foredraga detta. Tv& behallarehalvor bilda sasom sagts ett »stall», och man placerar dylika stall parallellt och med det avstand mellan dem, som erfordras for de mellan behallarna rorliga skraporna. Ett stort antal dylika stall hopmonteras batterivis till ett »knippe» med gemensam tilloppgedning for kylmediet och likaledes gemensam avloppsledning for avsngen gas. Kylmediet am lampligen flytande ammoniak eller kall saltlosning. Barest flytande ammoniak anvandes, far denna overga till gasform i resp. behallare under utveckling nv kyla. Den nn beskrivna anordningen visas schematiskt i fig. 5. Han beteaknar liksom i fdregaende figurer 1 de tudelade behallarna, 14 en vinkelratt mot desamma forlopande roterbar axel, yid vilken aro fdsta armar 15 forsed.da med skrapanordningar 16. Flytande ammonia,k eller kall saltlosning tillfores genom den for smutliga behallare gemensamma och med dem forbundna ledningen 8, och ammoniakgas el1ei nagot uppvarmd saltlOsning avgar genom ledningen 9. Lampligt am att varje halva bar dylika ledningar for tillopp och avlopp, sasom framgar av fig. 1, dam 10 betecknar forbindelseledningar, som forbinda varje behallarehalva med det gemensamma tilloppet 8. Bet gemensamma avloppet ar betecknat med 9. 11-13 beteckna profiljarn, avsedda for stagning av aggregatet. As can be seen in more detail from Fig. 1, the cooling line containers are made in two, parts 1, which are preferably equally large and uniform saints arranged in the same plane and on ay-stand apart from each other. The containers are made of plates 2, see Fig. 2, which are braced with welded spacer bolts 3 or the like, e.g. infalkla rivets, which are afterwards sanded to obtain a smooth surface. If the deposition of the ice is neglected, the surfaces 2— - karma will be treated in a suitable manner, e.g. enamelled, sanded.e or Coated with some physical or chemical medal. St e.g. you can resort to plating the plates, for example with copper, pre-corroding, nickel plating or coating with monel metal. a flat strip 4 or the like is welded to the circumferential edges, whereby a closed be-Ma'am is obtained. The internal spacing between the plates 2 is suitably chosen to be 10 or 20 mm. The cooling containers can have any shape, namely so that the bath halves together in a huyuclsak form a circle, rectangle or mango horn, suitably a sex or attahorn. This form is particularly suitable, partly from the point of view that one can thereby most efficiently utilize the iron plates, from which one separates the plates intended for the production of the containers, partly from the point of view that one thereby thereby Mr good bracing in the corners of each container, without these braces preventing the scrapers from passing over the entire surface in order to completely scrape the surface. The two container halves are arranged at a certain distance from each other (in Fig. 1 denoted by a), but as said, in the same vertical plane and coated with the same scraper or scrapers. Two such halves together form a "stable", and thanks to the habit of the space a between the two halves it is not possible to insert the shaft for the scraping of the scrapers in this space. Such a gap is advantageous in assembly and disassembly, for, since such a gap exists, one can easily, since the containers are fixed in their layers and mounted, lower or take up a shaft with arms and scrapers, without having to disturb the containers . This Or a. very great simplification, for so, as soon as you have to rnbba the containers, if you oaks & had to remove the refrigerant and break the wires f Or the same, which am extremely difficult.- This space between the hada, generator container halves, used in the shaft an placed, is done appropriately vertically , i.e. S. each container is suitably divided into two halves of a vertical plane, so that the shaft with arms and scrapers' Eft ka.n is lowered during assembly. However, there is no obstacle to dividing each container into two halves, spaced apart from each other at a horizontal plane or a plane obliquely to the horizontal plane, if one were to prefer this for flag reasons. As mentioned, two tank containers form a "stable", and such stalls are placed parallel and with the distance between them required for the scrapers movable between the containers. A large number of such stalls are assembled battery-wise into a "bundle" with a common supply line for the refrigerant and also a common drain line for the exhaust gas. The refrigerant is suitably liquid ammonia or cold brine. Most liquid ammonia is used, if this is converted to gaseous form in resp. container under development nv cooling. The device just described is shown schematically in Fig. 5. As in the preceding Figures 1, he denotes the two-part containers, 14 an angle steering wheel towards the same extending rotatable shaft, the first arms 15 being provided with scraping devices 16. Liquid ammonia, k or cold saline solution is supplied through the pipe 8 common and connected to dirty containers, and ammonia gas or slightly heated brine is emitted through the pipe 9. It is convenient for each half to carry such pipes for inlet and drain, as shown in Fig. 1, dam 10 denotes connecting pipes , which connect each container half with the common inlet 8. The common drain is denoted by 9. 11-13 denote the profile iron, intended for bracing the unit.

En mycket viktig del dr skraporna. Bet an namligen absolut nodvandigt att pa mekanisk vag halla kybnediumbehallarnas ytor fria fran is. Sasom framga'r av figurerna ax i mellanrummet mellan behallarehalfterna infOrd en roterbar, in.ot behallarnas verksamma kylyta, vinkelratt anbragt axel 14, pa vilken anord.ningar for avlagsnande av a behallarens ytor bildad is arc anbragta. Ett vasentligt kannetecken enligt uppfinningen är att i mellanrummet mellan varje par av behallare finnes en roterbar arm 15, fOrsedd med ett flertal isskrapor 16, strackande sig fran amens rotationsaxel i huvudsak nt till behallarens omkrets eller oaks& sa, att arinen utefter hela sin ldngd an besatt med skrapor av namnt slag. Givetvis dr dock intet som hindrar att armen utefter hela sin langd an forsedd med eller utbildacl som en enda skrapa, t. ex. i form av en frau armen vinkelratt eller under annan vinkel utgaende list eller ham. Detta an dock ej det basta rtforandet, ty skrapor av sistnamndla slag gOra ganska start mothtand, da de bring-as aft Totem i losningen Bet am darfor lampligare att i stallet anvanda ett flertal skrapelement, sasom ovan antytts. Skraporna bilda foretrad.esvis en viss vinkel med den desamma uppbarande amen, sasom tydligt framgar al:- fig. 1. Ju storre vinkel skraporna gam mot armen, desto mindre blir deras motstand vid rotationen av armarna, som av den motoriskt paverkade axeln 14 aro drivna i den med pill fig. 1 antydda riktningen. Varje skrapa 16 dr lampligen atminstone nagot langre an avstandet a mellan nanmcla halfter. Harigenom kommer varje skrapa att ga jamnt Over fran den ena halvan till den andra. Vilket utforande man an ger skraporna bOra, desamma utforas sa, att varje kylyta fullstandigt avskrapas anda ut till omkretsen Lampligt an att skraporna anordnas pa, en arm, som stracker sig pa, Eanse sidor om axeln, varigenona axelns, armparternas och skrapornas upplyftande blir 'att. Vid anordningar av i fig. 1 antytt slag k' det lampligt att skraporna, aro sa dimensionerade eller a,nordnade, att varje skrapa vid rot ationen nâ- got Overlappar foreghende och/eller efterfOljande skrapas skrapomrade. B5 flera snedstallda skrapelement forefinnas, sasom antydes i 1, kan det vara, av fOrclel att ej utfOra dessa — — skrapor raka utan }Ada pa sh satt, att varje skrapas framkant (i rotationsriktningen raknat) dr nagot avfasad (tillspetsad) och varje skrapas bakre kant (i rotationsriktningen raknat) an bojd (stromlinjefomad). Genom den bojda eller stromlinjeformade utgestaltningen av varje skrapas bakre del »slappes» den melba varje par av behallare varande vatskan battre vid rotationen. Genom den tillspetsade framk-anten pa varje snecistalld skrapa, erhalles mjukare ging och mindre vatskemotstand. A very important part where the scrapers. Namely, it is absolutely necessary to keep the surfaces of the kybnedium containers free of ice on a mechanical level. As can be seen from the figures, in the space between the container halves a rotatable shaft 14 is arranged perpendicularly to the effective cooling surface of the containers, on which devices for depositing ice formed on the surfaces of the container are arranged. An essential feature according to the invention is that in the space between each pair of containers there is a rotatable arm 15, provided with a plurality of ice scrapers 16, extending from the axis of rotation of the container substantially nt to the circumference of the container or oaks & sa, that the fireplace along its entire length is occupied with scrapers of the kind mentioned. Of course, there is nothing to prevent the arm along its entire length from being provided with or trained as a single scraper, e.g. in the form of a frau arm angle knob or at another angle outgoing strip or him. This, however, is not the best performance, for scrapers of the latter kind make quite a start, as they are brought by Totem in the solution. It is therefore more convenient to use a number of scraper elements in the stable, as indicated above. The scrapers form a certain angle with the same supporting amen, as is clear from Fig: 1. The larger the angle of the scrapers towards the arm, the less their resistance is at the rotation of the arms, which of the motor-driven shaft 14 is driven in the direction indicated by pill Fig. 1. Each scraper 16 should be at least slightly longer than the distance between half halves. As a result, each scraper will pass evenly from one half to the other. The design is carried out in such a way that each cooling surface is completely scraped out to the perimeter. It is appropriate for the scrapers to be arranged on an arm which extends on the sides of the shaft, whereby the lifting of the shaft, the arm parts and the scrapers becomes'. to. In the case of devices of the type indicated in Fig. 1, it is appropriate for the scrapers, aro so dimensioned or a, north, that each scraper at the rotation slightly overlaps the previous and / or subsequent scraper area. B5 several obliquely scraped elements are present, as indicated in 1, it may be, by reason not to perform these - - scrapers straight but} Ada pa sh sat, that each scraping front edge (in the direction of rotation shaved) dr somewhat bevelled (pointed) and each scraped rear edge (shaved in the direction of rotation) on the bend (streamline shape). Due to the curved or streamlined design of the rear part of each scraper, it is "relaxed" between each pair of containers that the liquid is better at rotation. The tapered leading edge of each snow-steel scraper provides a smoother gait and less water resistance.

Sasom framgar av fig. 3 forefinnes i mellanrummet mellan varje par av behallare 1 en roterbar arm 15, vans ena sida r forsedd med ett flertal t. ex. snedstallda skrapanordningar 16 av i fig. 1 visat slag, anordnade att bestryka den angransande ytan av den ena behallaren, och vars motsatta sida likaledes an forsedfl med ett flertal skrapanordningar 16, anordnade att bestryka, den angransande ytan av den andra, behallaren av naninda par. Foretradesvis aro harvid, sasoin likaledes framer av fig. 3, skrapanordningarna, 16 a omse sidor om resp. arm inbordes fOrskjutna. Armarna 15, som kunna tillverkas av smidesjarn, aro medelst nay 17 fastgjorda vid den gemensamma axeln 14. Varje skrapelement 16 tillverkas foretradesvis av smidesjarn i form av en vinkelbajd metallstrimla, inetallplat eller dylikt, dar vinkeln a (se fig. 3) bOr va,ra storre an 900. Ett sa.da,nt vinkeljarn fastgores med sin ena vinkeldel stadigt p5, armen, och den andra vinkeldelen tjanster som skrapande kant mot kylytan (i forbighende ma, sagas, att de vinkelbojda och snedstallda skrapelementen 16 i fig. 3 fOr askadlighetens skull aro nagot schematiskt framstallda, i det att man av skrapan i donna figur ser endast sjalva sektionen). Genom vinkelbojningen (vinkeln a) erh.alles god barighet, och tack vane att vinkeln a lampligen an storre an 90° tenclerar den skrapande ytan att ligga an mot resp. behallares kylyta battre an om vinkeln a yore lika med 90° eller mindre. As can be seen from Fig. 3, there is in the space between each pair of containers 1 a rotatable arm 15, one side of which is provided with a plurality e.g. inclined scraping devices 16 of the type shown in Fig. 1, arranged to coat the adjacent surface of one container, and the opposite side of which likewise provided with a plurality of scraping devices 16, arranged to coat, the adjacent surface of the other, the container of nine pairs . Preferably, as well as the front of Fig. 3, the scraping devices 16a have sides of resp. arm inboard displaced. The arms 15, which can be made of wrought iron, are by means of nay 17 attached to the common shaft 14. Each scraper element 16 is preferably made of wrought iron in the form of an angled metal strip, metal plate or the like, where the angle a (see Fig. 3) should be, ra greater than 900. A sa.da, nt angle iron is fastened with its one angular part firmly on the arm, and the other angular part serves as a scraping edge against the cooling surface (in passing ma, it is said that the angularly curved and obliquely scraped elements 16 in fig. 3 For the sake of innocence, something is schematically represented, in that only the section itself can be seen from the scraper in this figure). Due to the angular bending (angle a) all good barability is obtained, and thanks to the habit that the angle α is suitably greater than 90 °, the scraping surface tends to abut against resp. container cooling surface better than the angle a yore equal to 90 ° or less.

En sarskild utforingsform av skrapanordningen visas i fig. 6. Enligt densamma Sr endast den ena halften 15 (straekande sig frau armens rotationsaxel 14 till i hu.vudsak resp. behallares omkrets) av en arm mellan ett par av angransande behallare fOrsedd med. ett flertal skrapanordningar 16, bestrykande den ena behallarens yta, medan den andra halften 15' av amen ãr ffirsedd med ett flertal it motsatt hall sig strackande skrapanordningar 16', fordelade -atmed amen frail doss rotationsaxel i huvudsak fram till dess ande och bestrykande den angransande ytan av den andra behallaren i namnda par. Vid en dylik utforingsform an dot lImpligt, att de bada armhalfterna 15, 15' bilda annan vinkel an 180° med varandra. Harigenom kan losningea hitt stromma runt skrapan utan att era nagot stone motstand. Det bor observeras, att en hog koldoverforing erhalles mera genom att ytskiktet avlagsnas frau resp. behallares kylyta On genom att losningen sattes i rotation. I det ovanstaende har omnamnts, att skrapelementen fastsattas pa armen i sned stailning, d. v. s. att de bilda en viss vinkel med amen (se fig. 1). ,Tu stOrre vinkel dessa element bilda med amen, desto mindre bun deras motstand i frysvatskan vid rotationen. Genom att vidare hoger- och vansterhalvorna av samma arm dessa skrapelement anbringas alternerande, kan losningen latt stromma forbi varje skrapelement (se fig. 3). Harigenom vinnas foljande fordelax: 1. notstandet i vatskan blir Etat; 2. vatskans rorelse relativt kylytorna blir stor; 3. ytskiktet av is avlagsnas fran resp. behallares kylyta for varje gang som en skrapa passerar; 4. isen tones med 'agora hastighet ut mot periferien. A particular embodiment of the scraper device is shown in Fig. 6. According to the same, only one half 15 (extending from the axis of rotation 14 of the arm to substantially the circumference of the container, respectively) of an arm between a pair of adjacent containers is provided with. a plurality of scrapers 16, covering the surface of one container, while the other half 15 'of the amen is provided with a plurality of scrapers 16' extending opposite it, distributed with the amen frail dose axis of rotation substantially up to its spirit and coating the adjacent the surface of the second container in said pair. In such an embodiment it is convenient that the two arm halves 15, 15 'form another angle of 180 ° with each other. As a result, the solutions can flow around the scraper without any stone resistance. It should be noted that a high cold transfer is obtained more by depositing the surface layer frau resp. container cooling surface On by setting the solution in rotation. In the above it has been mentioned that the scraper elements are fixed on the arm in an oblique position, i.e. that they form a certain angle with the amen (see Fig. 1). , The larger the angle these elements form with the amen, the less their resistance in the freezing liquid will rotate. Furthermore, by arranging these scraper elements on the right and left halves of the same arm alternately, the solution can be allowed to flow past each scraper element (see Fig. 3). As a result, the following advantages are gained: 1. the net position in the vat becomes Etat; 2. the movement of the water relative to the cooling surfaces becomes large; 3. the surface layer of ice is removed from resp. container cooling surface for each time a scraper passes; 4. The ice is toned with 'agora velocity towards the periphery.

Enligt en lamplig utforingsform, sour narmare askadliggores i fig. 4, fastas skrapanordningarna fjadracle vid den desamma uppbarande roterbara armen. I fig. 4 betecknar 1 frysbehallaren, 15 den roterbara amen, som medelst navet 17 an fast vid axeln 14. 16 betecknar de vinkelbojda skrapelementen, som medelst dot fjadrande partiet 18 aro fastgjorda vid fastanordningen 19 for skrapelementens fastgorande vid armen 15. For att fa, god verkan av en s&- dan fjadrande skrapa bor dot skrapande partiet vara uppdelat i mindre element. According to a suitable embodiment, which is more closely damaged in Fig. 4, the scraper devices fjadracle are attached to the same supporting rotatable arm. In Fig. 4, 1 denotes the freezer container, 15, the rotatable amen, which by means of the hub 17 is fixed to the shaft 14. 16 denotes the angularly curved scraper elements, which by means of the dot resilient portion 18 are fastened to the fastening device 19 for attaching the scraper elements to the arm 15. , good effect of such a resilient scraper, the dot scraping portion should be divided into smaller elements.

Claims

1. Patent claim: 1: o) Ice generator with a plurality of, preferably vertically arranged, parallel placed flat containers for coolant, arranged at inboard spaces, which between TIMs were intended to receive the liquid intended for freezing, and in which spaces there are rotatable organs, e.g. scrapers, for depositing formed ice from the surfaces of the container, can be illustrated by the fact that each container is divided into two, preferably equal parts, arranged in the same plane and on, spaced apart from each other, between which parts a rotatable, said member Mr ice retention stops, axel ar anbragt. 2: o) Ice generator according to patent claim 1: o), characterized in that each container's half halter arc arranged in a vertical plane. 3: o) Ice generator according to patent claim 1: o) or 2: o), characterized in that the circumference Sr of each container is mainly eirkuldr. 4: o) Ice generator according to patent claim 1: o) or 2: o), characterized in that the circumference of each container is Sr maughornig, e.g. rectangular or preferably sex- or attalnknig. 5: o) Ice generator according to some of the foregoing patent claims, can be signed dSrav, that the side plates of each container half are ground ground and held together by means of spacer bolts (3), suitably welded to the plates and with their extruded surfaces ground flat with the container surfaces. 6: o) Ice generator according to any one of the preceding 4-10070 patent claims, characterized in that the shaft is provided with an arm which carried one or more scrapers. 7: o) Ice generator according to any one of the foregoing patent claims, characterized in that the scrapers extend from the axis of rotation of the arm substantially out to the onakrets of the container or are arranged along the entire length of the arm. 8: o) Ice generator according to the patent claim 6: o) or 7: o), can be drawn therefrom, to scrape, the pores form an angle with the same supporting arm. 9: o) Ice generator according to patent claim 6: o), 7: o) or 8: o), characterized in that the length of each scraper is at least somewhat greater the distance (a) between the container halves. 10: 0) Ice generator according to any one of the patent claims 6: o) -9: o), can be characterized in that the scrapers are said to be dimmed or arranged so that each scraper at the rotation slightly overlaps the previous scraper and / or subsequent scraper scraper height. 11: o) Ice generator according to any one of the patent claims 6: o) -10: o), indicating that the leading edge of each scraper (shaved in the direction of rotation) is somewhat bevelled. 12: o) Ice generator according to any one of the patent claims 6: o) -11: o), characterized in that the rear edge of each scraper (rotated in the direction of rotation) is bent (streamlined). 13: o) Ice generator according to apt of the preceding patent claim, characterized in that, cT ar but in the space between two adjacent containers extends on 5 sides of the shaft, its one part is provided with scrapers arranged to coat the surface of one container ° eh den the other party with scrapers arranged to coat the surface of the other beggar, 11: o) Ice generator according to patent claims 6: o) —12: o), can be drawn therefrom, that the scrapers Omse sides of resp. arm arc inboard displaced. 15: o) Ice generator according to any one of the foregoing patent claims, characterized in that the two arm parts form a different angle of 180 ° to each other. 16: o) Ice generator according to any one of the preceding patent claims, kb, characterized in that each scraper forms an angle stone of 900 with the supporting arm. 17: o) Ice generator according to any of the foregoing patent claims, kanneteeknad & ray, that the scrapers are resiliently fixed to the same supporting, rotatable arm. 18: o) Ice generator according to any of the foregoing patent claims, kanneteeknad daray, aft the containers' surfaces 5, ro so acquired or treated, e.g. enamelled, ground or oyster-coated by any physical or chemical means to facilitate removal of the ice on the surfaces. 19: o) Ice generator according to any of the preceding patent claims, kanneteeknad daray, that all behMlarehgfter are connected rned one. common supply line for cooling medium ° eh a common drain line for cooling medium. Stockholm 1941. Kungl. Boktr. P. A. Norstedt & Slicer 410089