DK173125B1 - Freezer and use of the same - Google Patents
Freezer and use of the same Download PDFInfo
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- DK173125B1 DK173125B1 DK75794A DK75794A DK173125B1 DK 173125 B1 DK173125 B1 DK 173125B1 DK 75794 A DK75794 A DK 75794A DK 75794 A DK75794 A DK 75794A DK 173125 B1 DK173125 B1 DK 173125B1
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- freezer
- liquid nitrogen
- sensor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/08—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block
- A23B4/09—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid N2, at cryogenic temperature
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/066—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
- A23B4/068—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes with packages or with shaping in the form of blocks or portions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
- F25D3/11—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air with conveyors carrying articles to be cooled through the cooling space
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Description
j· i DK 173125 B1j · i DK 173125 B1
Fryseapparat samt anvendelse af sammeFreezer and use of the same
Opfindelsen angår et fryseapparat af den type, hvor et 5 produkt tilføres et åbent kar, med en bund, der er udformet som et reservoir, og hvor bunden ved den åbne ende er forhøjet, f.eks. som en rampe, hvor flydende nitrogen transporteres sammen med produktet og flyder fra den ene ende af karret til den anden ende af karrets åbne ende, 10 og hvor mindst et vibrationsorgan kan vibrere karret for transport af produktet. Desuden angår opfindelsen en anvendelse af fryseapparatet.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a freezer of the type in which a product is supplied to an open vessel having a bottom which is designed as a reservoir and the bottom at the open end is elevated, e.g. as a ramp where liquid nitrogen is transported with the product and flows from one end of the vessel to the other end of the open end of the vessel, and at least one vibration means can vibrate the vessel for transporting the product. In addition, the invention relates to the use of the freezer.
Nitrogenfryseapparater anvendes til frysning af varer så-15 som hamburgers, rejer, muslinger, fiskefilet'er færdigretter, forarbejdede kødvarer osv.Nitrogen freezers are used for freezing goods such as hamburgers, shrimp, mussels, fish fillets, ready-made meals, processed meat products, etc.
Flydende nitrogen er en letflydende og farveløs væske, der har en temperatur på ca. -196 °C, hvilken er særdeles 20 velegnet til indfrysning af varer. Flydende nitrogen giver en meget hurtig indfrysning, der især er velegnet til frysning af varer, som befinder sig på en produktionslinje. I øvrigt er det sådan, at den hurtige og nøje styrede indfrysning sikrer, at varens oprindelige kvalitet beva-25 res bedst muligt på ensartet og højt niveau. Med andre ord vil varen, efter at den er blevet indfrosset, ikke eller kun i ringe grad, ændre sit udseende, sin smag eller konsistens.Liquid nitrogen is a light liquid and colorless liquid having a temperature of approx. -196 ° C, which is very suitable for freezing goods. Liquid nitrogen provides a very quick freeze, particularly suitable for freezing goods on a production line. Furthermore, the fast and carefully controlled freezing ensures that the original quality of the product is kept at the best possible level at a uniform and high level. In other words, after it has been frozen, the product will not, or only slightly, change its appearance, taste or texture.
30 Der findes mange forskellige måder at opbygge nitrogenfrysere på.30 There are many different ways to build nitrogen freezers.
De mest almindelige er 35 1. tunnelfrysere 2. spiralfrysere 3. dyppe frysere DK 173125 B1 2 4. fryseskabe og v 5. vibrationsfrysere.The most common are 35 1. tunnel freezers 2. spiral freezers 3. dip freezers DK 173125 B1 2 4. freezers and v 5. vibration freezers.
De to første typer har det til fælles, at varen transpor-5 teres på et transportbånd og overbruses med forstøvet, flydende nitrogen. Spiralfryserne kan bygges til større kapaciteter end tunnelfryserne.The first two types have in common that the article is transported on a conveyor belt and sprayed with atomized liquid nitrogen. The spiral freezers can be built to larger capacities than the tunnel freezers.
Den tredje type anvender også et transportbånd, men her 10 nedsænkes varen på transportbåndet i et bad af nitrogen.The third type also uses a conveyor belt, but here the product is immersed on the conveyor belt in a bath of nitrogen.
Varen, der neddyppes i nitrogenbadet, bliver meget hurtigt afkølet, hvilket indebærer, at den type apparat har særdeles stor kapacitet.The product immersed in the nitrogen bath is cooled very quickly, which means that the type of appliance has extremely large capacity.
15 Ønskes portionsopdelte varer nedfrosset anvendes typisk fryseskabe. Indfrysning foregår ved cirkulation af meget kold nitrogengas forbi varerne, der er anbragt på hylder j i fryseskabet.15 If portioned goods are frozen frozen, cabinets are typically used. Freezing takes place by circulating very cold nitrogen gas past the goods placed on shelves j in the freezer.
20 Som det fremgår foran, skal produkter, der ønskes ned- frosset i de ovennævnte apparater, anbringes på et transportbånd eller på hylder. Med andre ord vil den ikke frosne vare få direkte kontakt med et underlag før indfrysning. Dette er ikke altid hensigtsmæssigt, især ikke ' 25 hvis der er tale om såkaldte granulerede produkter, såsom hakket kød med fedt og vand, der ved indfrysning på et transportbånd kan fryse fast på transportbåndet og i øvrigt fryse sammen til en stor klump.20 As stated above, products which are to be frozen in the aforementioned apparatus must be placed on a conveyor belt or on shelves. In other words, the frozen product will not have direct contact with a substrate before freezing. This is not always appropriate, especially not in the case of so-called granulated products, such as minced meat with fat and water, which, when frozen on a conveyor belt, can freeze firmly on the conveyor belt and otherwise freeze together to form a large chunk.
30 Til undgåelse af ovennævnte problem anvendes nu den femte type nitrogenfryser, som er en vibrations fryser, og af den type opfindelsen handler om.In order to avoid the above problem, the fifth type of nitrogen freezer, which is a vibration freezer and of the type of the invention is now used.
Ved vibrationsfrysere bringes varen i direkte kontakt med 35 flydende nitrogen under vibration af varen og nitrogenet.In vibration freezers, the product is brought into direct contact with 35 liquid nitrogen during vibration of the product and nitrogen.
3 DK 173125 B13 DK 173125 B1
En kendt vibrationsfryser består således i princippet af et kar, hvor der tilføres flydende nitrogen i den ene ende sammen med en vare såsom hakket kød, rejer og andre 5 lignende produkter, hvor der ønskes en hel eller delvis gennemfrysning, som sikrer at varerne ikke hænger sammen.Thus, a known vibration freezer consists, in principle, of a vessel in which liquid nitrogen is supplied at one end together with a product such as minced meat, shrimp and other similar products, where a complete or partial freezing is desired, which ensures that the goods do not hang. together.
Forestiller man sig eksempelvis, at et kødprodukt, såsom hakket kød, med et vis vandindhold skal indfryses, vil 10 det forstås, at det vil være særdeles vanskeligt at anbringe et sådant produkt på et transportbånd, da det ganske enkelt vil sætte sig fast på transportbåndet.For example, if a meat product such as minced meat is to be frozen with a certain water content, it will be understood that it will be extremely difficult to place such a product on a conveyor belt as it will simply attach to the conveyor belt. .
De ovennævnte produkter fryses derfor sædvanligvis i en 15 vibrationsfryser, der som nævnt har et kar, der i den ene ende er åben. Ved karrets lukkede ende tilføres flydende nitrogen og varen, idet der således i karret bliver tilvejebragt et bad af nitrogenet. I karrets anden, åbne ende findes der en rist, hvor overskudsnitrogenet kan ledes 20 bort og til en beholder hvorfra det med en pumpe recirkuleres til karrets lukkede ende. Dette har den fordel, at mængden af forbrugt, flydende nitrogen bliver holdt på et rimeligt lavt niveau, hvilket ikke er helt uden betydning, da flydende nitrogen er forholdsvis kostbar.Therefore, the above products are usually frozen in a vibration freezer which, as mentioned, has a vessel open at one end. At the closed end of the tub, liquid nitrogen is added to the product, thus providing a bath of the nitrogen in the tub. At the other open end of the vessel there is a grate from which the excess nitrogen can be discharged and to a container from which it is recirculated with a pump to the closed end of the vessel. This has the advantage that the amount of liquid nitrogen consumed is kept at a reasonably low level, which is not entirely unimportant, since liquid nitrogen is relatively expensive.
2525
En således kendt vibrationsfryser med rist er som nævnt særdeles velegnet til mange typer fryseopgaver, hvor der ønskes indfrysning af varer, som skal løsfryses.A vibration freezer with grate thus known, is, as mentioned, particularly suitable for many types of freezing tasks, where freezing of goods to be frozen is desired.
30 Endvidere kendes fra US patentskrift nr. 3 898 488 en vibrationsfryser af den i krav l's indledning angivne type.Further, from US Patent No. 3,888,488 a vibration freezer of the type specified in the preamble of claim 1 is known.
Denne kendte vibrationsfryser arbejder på den måde, at de emner der skal nedfryses fremføres i spring, idet appara-tets vibrationsprincip bevirker at emnerne kastes op af 35 væsken langs en fremadgående bane i karret, hvorefter emnerne falder ned i væsken igen, og berører bunden, hvor 4 DK 173125 B1 emnerne tilføres ny bevægelsesenergi, jf. publikationen * fig. 3. Der er ved det kendte fryseapparat selvsagt tale om et ret hårdt fremføringsprincip, som ikke alle slags emner vil kunne tåle. Desuden kræves der ved det kendte 5 apparat, at emnerne har en vægtfylde der er større end nitrogenbadets, hvis fremføringen skal kunne iværksættes.This known vibration freezer works in such a way that the items to be frozen are advanced in leaps, the vibration principle of the apparatus causing the items to be thrown by the liquid along a forward path in the vessel, after which the items fall back into the liquid and touch the bottom, where 4 DK 173125 B1 blanks are supplied with new motion energy, cf. the publication * fig. 3. Of course, the known freezing apparatus is a fairly rigid principle which not all subjects can withstand. In addition, in the known apparatus, the blanks are required to have a density greater than that of the nitrogen bath if the feeding is to be initiated.
Opfindelsen har nu til formål at forbedre det ovenfor om-! talte apparat, således at et større udvalg af emnerne så- j 10 som sarte emner, og emner med en vilkårlig vægtfylde, kan fremføres.The invention now aims to improve upon the above. spoken apparatus, so that a greater variety of the subjects as well as delicate subjects, and subjects of any density, can be advanced.
] * Dette formål tilgodeses ved et fryseapparat af det i krav l's indledning angivne art, der er ejendommeligt ved, at 15 karret er anbragt på et stativ med højdeindstillelige ben.This purpose is met by a freezing apparatus of the kind specified in the preamble of claim 1, which is characterized by the fact that the tub is placed on a rack with height adjustable legs.
Ved således at udformet karret med højdeindstillelige ben, kan dybden af nitrogenbadet justeres præcist, hvor-20 ved badet kan tilpasses emner under hensyn til blandt andet størrelse, vægtfylde, "skrøbelighed" og ønsket op-" holdstid. Fremføringen af emnerne vil ske på en sådan må de, at de hele tiden har kontakt med bunden, hvilket er nødvendigt af hensyn til apparatets vibrationsorganer, 25 som i øvrigt påvirker emnerne på en mere rolig måde, end vibrationsfryseren beskrevet i ovennævnte US patent. Det skal også bemærkes, at emnerne ikke behøver at være helt neddykkede i flydende nitrogen ved fryseren ifølge opfindelsen.Thus, by designing the tub with height adjustable legs, the depth of the nitrogen bath can be precisely adjusted, whereby the bath can be adapted to items taking into account, inter alia, size, density, "fragility" and desired retention time. such that they must always be in contact with the bottom, which is necessary for the vibration means of the apparatus, which incidentally affect the blanks in a quieter manner than the vibration freezer described in the above-mentioned U.S. patent. need be completely immersed in liquid nitrogen by the freezer of the invention.
30 I en udførelses form er det endvidere fordelagtigt, at der ’ ved karrets endevæg er anbragt en niveauføler, idet mæng den af flydende nitrogen i karret hele tiden kan holdes under kontrol, ved at niveauføleren giver signal til en 35 ventil for tilførsel/afbrydelse af flydende nitrogen.In one embodiment, it is further advantageous that a level sensor is provided at the end wall of the vessel, the amount of liquid nitrogen in the vessel being constantly controlled by the level sensor giving a signal to a supply / disconnect valve. liquid nitrogen.
1! 5 DK 173125 B11! 5 DK 173125 B1
Yderligere er det en fordel, som angivet i krav 3, at en ’ sensor har forbindelse med niveauføleren, idet sensoren er indrettet til at forhindre tilførsel af flydende nitrogen, hvis gasseparatoren ikke er på plads. Denne de-5 talje er særdeles fordelagtig af sikkerhedsmæssige årsager, idet det herved undgås, at flydende nitrogen bliver tilført i ukontrollerede mængder.Further, it is an advantage as claimed in claim 3, that a sensor is connected to the level sensor, the sensor being adapted to prevent the supply of liquid nitrogen if the gas separator is not in place. This de-waist is particularly advantageous for safety reasons, thereby preventing liquid nitrogen from being supplied in uncontrolled amounts.
Ved at niveauføleren er monteret på en separator for se-10 parering af gas/væske opnås den fordel, at turbulens i selve karret kan undgås, hvorved fås en nøjagtig niveauregulering.By installing the level sensor on a gas / liquid separator, the advantage is obtained that turbulence in the vessel itself can be avoided, thereby providing accurate level control.
Endelig er det en fordel i forbindelse med rengøring, at 15 karret ved hjælp af mindst en luftcylinder kan vippes.Finally, it is an advantage in cleaning that the vessel can be tilted by means of at least one air cylinder.
Som nævnt angår opfindelsen også anvendelse af indfrys-ningsapparatet. Dette apparats anvendelse er nærmere angivet i krav 7.As mentioned, the invention also relates to the use of the freezing apparatus. The use of this apparatus is further specified in claim 7.
2020
Opfindelsen forklares nu nærmere i forbindelse med en foretrukket udførelsesform og under henvisning til tegningen, på hvilken 25 fig. 1 skematisk viser fryseapparatet ifølge opfindelsen set delvis forfra, fig. 2 skematisk viser fryseapparatet set fra siden, 30 fig. 3 skematisk viser fryseapparatet i en stilling, hvor det er gjort klar til rengøring, og '' fig. 4 skematisk viser en gasseparator med niveauføler til indsættelse i karret.The invention will now be explained in more detail in connection with a preferred embodiment and with reference to the drawing, in which FIG. 1 is a schematic partial front view of the freezer according to the invention; FIG. 2 is a schematic side view of the freezer; FIG. 3 schematically shows the freezer in a position where it is ready for cleaning, and FIG. 4 schematically shows a gas separator with level sensor for insertion into the vessel.
35 9 6 DK 173125 B135 9 6 DK 173125 B1
Som det ses på tegningen, omfatter fryseapparatet ved en foretrukket udførelsesform for opfindelsen et åbent kar I, der har en bund 4, to sidevægge 2, 3 og en endevæg 6.As seen in the drawing, in a preferred embodiment of the invention, the freezer comprises an open vessel I having a bottom 4, two side walls 2, 3 and an end wall 6.
Modsat endevæggen findes der i karret 1 en åbning 5. Som 5 det kan ses på fig. 2, er bunden ved karrets åbne ende forhøjet i forhold til resten af bunden, her vist som en rampe 22, der typisk kan have en højde på 5 til 30 mm.Opposite the end wall there is an opening 5. In the vessel 1, as can be seen in FIG. 2, the bottom at the open end of the tub is elevated relative to the rest of the bottom, shown here as a ramp 22, typically having a height of 5 to 30 mm.
Som det yderligere ses på fig. 2, er karret ophængt i 10 fjedre 9, hvorved karret kan bringes til at vibrere ved hjælp af mindst en vibrator 20. Fjedrene 9 hviler på et I stativ, som har fire højdeindstillelige ben 7, 8, der er ; forbundet med hinanden ved hjælp af to tværgående profi ler 25. Selve karret er udført dobbeltvægget, idet der 15 mellem væggene er anbragt et isolerende lag af polyu- rethanskum. På fig. 2 ses endvidere en udsugningsenhed II, som er beregnet til at udsuge det kolde gasformige nitrogen, der fordamper fra overfladen af det flydende nitrogen. På grund af sin lave temperatur, har det gas- 20 formige nitrogen en højere vægtfylde end den atmosfæriske luft, således at gassen lægger sig umiddelbart over laget ‘ af den flydende nitrogen, og idet det når ud over side fladen ved den åbne ende af karret, kan udsugningsenheden 11 let suge gassen væk til et ikke vist udsugningsanlæg.As further seen in FIG. 2, the tub is suspended in 10 springs 9, whereby the tub can be caused to vibrate by at least one vibrator 20. The springs 9 rest on an I stand having four height-adjustable legs 7, 8 that are; connected to each other by two transverse profiles 25. The vessel itself is made of the double wall, with an insulating layer of polyurethane foam being arranged between the walls. In FIG. 2, there is also seen a suction unit II which is intended to extract the cold gaseous nitrogen which evaporates from the surface of the liquid nitrogen. Because of its low temperature, the gaseous nitrogen has a higher density than the atmospheric air, so that the gas settles immediately above the layer of liquid nitrogen and reaches beyond the surface at the open end of the vessel. , the suction unit 11 can easily suck the gas away to a suction system not shown.
25 I karrets lukkede ende, jf. også fig. 4, ses at der er anbragt en gas/væskeseparator, der virker på den måde, at flydende nitrogen føres via et rør 13 ned i separatoren 16, hvorved gas undslipper fra en øvre kant 17 af separatoren, mens væskeformigt nitrogen føres ud af en åbning 30 18 ved bunden af separatoren. I øvrigt, jf. fig. 2, er røret 13 forbundet til et isoleret tilgangsrør 14 for flydende nitrogen. På separatoren, jf. fig. 4, er der an-‘ ordnet en ikke vist niveauføler i et rør 19 for afføling B af højden af flydende nitrogen i karret 1. Sensoren er af : 35 ultralydtypen og er i øvrigt af kendt art, og skal derfor ikke omtales nærmere her. I forbindelse med sensoren og 7 DK 173125 B1 gas/væskeseparatoren er der Indrettet et afstandsstykke 15, som har en ikke vist elektronik med en yderligere sensor for afføling af, om gasseparatoren er på plads.25 At the closed end of the tub, cf. also fig. 4, it is seen that a gas / liquid separator is arranged which acts in the way that liquid nitrogen is passed through a pipe 13 into the separator 16, whereby gas escapes from an upper edge 17 of the separator while liquid nitrogen is discharged from an opening. 30 18 at the bottom of the separator. Otherwise, cf. fig. 2, the pipe 13 is connected to an isolated liquid nitrogen inlet pipe 14. On the separator, cf. fig. 4, a level sensor is not shown in a tube 19 for sensing B of the height of liquid nitrogen in the vessel 1. The sensor is of: 35 the ultrasonic type and is otherwise of a known type and is therefore not to be discussed further here. In connection with the sensor and the gas / liquid separator, a spacer 15 is provided which has an electronics not shown with an additional sensor for sensing whether the gas separator is in place.
Hvis det viser sig, at gasseparatoren ikke er på plads, 5 vil tilførslen af flydende nitrogen ikke kunne tilvejebringes. Karret kan i øvrigt heller ikke hæves for rengøring .If it turns out that the gas separator is not in place, the supply of liquid nitrogen cannot be provided. Also, the tub cannot be raised for cleaning.
På fig. 3 ses fryseapparatet ifølge opfindelsen i en po-10 sition, hvor det er gjort klart til rengøring. Nærmere bestemt er ultralydsensoren og gasseparatoren 15 fjernet fra karret. Mindst en luftcylinder 10, der forefindes ved den ene fjeder 9, er bragt til at hæve karret i skrå retning. På denne måde kan karret let rengøres ved spuling, 15 idet rengøringsmiddel nu godt kan løbe ud over kanten.In FIG. 3, the freezer according to the invention is seen in a position where it is made clear for cleaning. More specifically, the ultrasonic sensor and gas separator 15 are removed from the tub. At least one air cylinder 10 provided by one spring 9 is raised to raise the vessel in an oblique direction. In this way, the vessel can be easily cleaned by flushing, 15 as cleaning agent can now well extend beyond the edge.
Fryseapparatets virkemåde skal nu i det følgende forklares .The operation of the freezer will now be explained below.
20 Et produkt, der f.eks, kan være granuleret og være klæbrigt med højt vandindhold, tilføres sammen med flydende nitrogen i karret 1 ved karrets lukkede ende. Produktet vil nu fryse hurtigt og ved samtidig vibrering af karret ved hjælp af vibratoren 20, kan hastigheden, hvorved pro-25 duktet bevæger sig gennem karret, reguleres. Når produktet når hen til den åbne ende, er det frosset og kan nu ledes ud over kanten, hvor det kan tilføres f.eks. et transportbånd til videre bearbejdning. Den viste ultralydssensor 21, fra fig. 2 kontrollerer helt tiden, at der 30 er den rigtige mængde flydende nitrogen i karret. Appara-tet har i øvrigt typisk en kapacitet på 100 til 200 kg i timen, hvis et produkt ønskes gennemfrosset.For example, a product which may be granulated and sticky with high water content is supplied together with liquid nitrogen in the vessel 1 at the closed end of the vessel. The product will now freeze quickly and by simultaneously vibrating the vessel by means of the vibrator 20, the speed at which the product moves through the vessel can be controlled. When the product reaches the open end, it is frozen and can now be led beyond the edge where it can be applied e.g. a conveyor belt for further processing. The ultrasonic sensor 21, shown in FIG. 2 constantly checks that the correct amount of liquid nitrogen in the vessel is 30. Moreover, the appliance typically has a capacity of 100 to 200 kg per hour if a product is to be frozen.
Claims (7)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK75794A DK173125B1 (en) | 1994-06-24 | 1994-06-24 | Freezer and use of the same |
| PCT/EP1995/002426 WO1996000371A1 (en) | 1994-06-24 | 1995-06-23 | A freezing apparatus and use of it |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK75794A DK173125B1 (en) | 1994-06-24 | 1994-06-24 | Freezer and use of the same |
| DK75794 | 1994-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK75794A DK75794A (en) | 1995-12-25 |
| DK173125B1 true DK173125B1 (en) | 2000-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK75794A DK173125B1 (en) | 1994-06-24 | 1994-06-24 | Freezer and use of the same |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK173125B1 (en) |
| WO (1) | WO1996000371A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2853403B1 (en) * | 2003-04-07 | 2017-05-19 | Air Liquide | PROCESS AND INSTALLATION FOR PROCESSING-CROSSING / COOLING / FREEZING-PRODUCTS |
| CN117223752B (en) * | 2023-11-13 | 2024-01-26 | 福州源丰海洋科技有限公司 | Abalone product production and processing quick-freezing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229458B2 (en) * | 1972-12-27 | 1977-08-02 | ||
| US4171625A (en) * | 1977-11-02 | 1979-10-23 | Formax, Inc. | Cryogenic freezing tunnel |
| GB8611538D0 (en) * | 1986-05-12 | 1986-06-18 | Boc Group Plc | Food freezing tunnel |
| FR2674320B1 (en) * | 1991-03-21 | 1999-01-29 | Lair Liquide | FREEZING PROCESS AND DEVICE |
-
1994
- 1994-06-24 DK DK75794A patent/DK173125B1/en not_active IP Right Cessation
-
1995
- 1995-06-23 WO PCT/EP1995/002426 patent/WO1996000371A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| DK75794A (en) | 1995-12-25 |
| WO1996000371A1 (en) | 1996-01-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PUP | Patent expired |
Expiry date: 20140624 |