EP0093975A1 - Dispositif pour la fabrication de la glace rompue - Google Patents

Dispositif pour la fabrication de la glace rompue Download PDF

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Publication number
EP0093975A1
EP0093975A1 EP83104192A EP83104192A EP0093975A1 EP 0093975 A1 EP0093975 A1 EP 0093975A1 EP 83104192 A EP83104192 A EP 83104192A EP 83104192 A EP83104192 A EP 83104192A EP 0093975 A1 EP0093975 A1 EP 0093975A1
Authority
EP
European Patent Office
Prior art keywords
ice
helix
knives
cylinder
screw conveyor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83104192A
Other languages
German (de)
English (en)
Other versions
EP0093975B1 (fr
Inventor
Friedhelm Strauss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intercontinentale Ziegra-Eismaschinen & Co GmbH
Original Assignee
Intercontinentale Ziegra-Eismaschinen & Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intercontinentale Ziegra-Eismaschinen & Co GmbH filed Critical Intercontinentale Ziegra-Eismaschinen & Co GmbH
Publication of EP0093975A1 publication Critical patent/EP0093975A1/fr
Application granted granted Critical
Publication of EP0093975B1 publication Critical patent/EP0093975B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
    • F25C1/145—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the inner walls of cooled bodies
    • F25C1/147—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the inner walls of cooled bodies by using augers

Definitions

  • the invention relates to a device for the production of broken ice, with an approximately vertically arranged, externally cooled cylinder, a water inlet in the lower region of the cylinder, an ice outlet in the upper region of the cylinder, a driven screw conveyor mounted on the cylinder, which is the the thin-layer ice forming the cylinder inner wall is continuously scraped off with at least one helix and conveyed as an ice helix in the direction of the ice outlet, and with an obstacle arranged on the screw conveyor in the space between the helix at the upper end of the helix to break the ice helix into pieces.
  • Such a device is known from US-PS 33 26 014.
  • a single-flight screw conveyor is provided in the cylinder. Between this one spiral, which scrapes off the thin-layer ice on the inner wall of the cylinder, spiral attachments are provided which are intended to promote the ice upwards.
  • a free space of large cross-section is provided in the helical area of the screw conveyor, so that there is no compaction and drainage effect on the ice.
  • an obstacle in the form of a pin is arranged on the conveyor side of the coil, which rotates with the screw conveyor relative to the housing.
  • This pin is positioned at an angle to the axis of the screw conveyor and apparently has the task of breaking the ice helix into pieces. Since this obstacle also has no compaction effect, it appears questionable whether such a device can be used to produce a compressed, dewatered hard-grain ice. Due to the lack of compaction and drainage effects, the ice may be more pasty. If an ice cream If there is a spiral in at least part of the space between the spirals, the pin breaks it up into pieces of ice with very different dimensions. The ice cubes must have a very different shape and a grain size that fluctuates over a wide range.
  • the invention has for its object to develop a device of the type described above so that the grain size of the ice cubes can be fixed to the desired dimensions and within narrow limits.
  • the dewatering and compaction function of the device for the ice must also be retained so that the pieces of ice have sufficient hardness and freedom from water.
  • the device for the special application in such a way that pieces of ice with the desired cross-section from width and height, for example in one Grain size of 5 x 5 mm can be produced, the length of these ice cubes usually being set within further limits, for example 3 to 6 mm.
  • the obstacle consists of a plurality of knives equally spaced over the interspace between the helix and a deflector adjoining the conveying side of the helix, that the knives each have a cutting edge on their side facing the conveying side of the helix, and that the knives in have connection to the cutting edges and the deflector in the connection to the delivery side of the helix a respective, mutually parallel each deflecting surface that are set at an angle of about 50 to 60 0 against the conveying direction of the Eis Maisl.
  • the equally spaced knives and the deflectors with their cutting edges and deflecting surfaces fulfill several functions. While the obstacle designed as a pin in the prior art cannot be expected to have a compaction effect on the ice, surprisingly, the arrangement of the majority of the knives and the deflector not only results in compaction and dewatering of the ice, but also the division of the ice helix into pieces of ice of a fixed size order with very narrow Abweichungstoleran - zen, which lie in the order of ⁇ 10%. On the one hand, it is important to achieve the required compaction effect, that is, to work towards backing up the scraped-off thin-layer ice and thus forming the ice helix over the entire space between the helices.
  • This compacting effect is probably not achieved by the fact that the knives are arranged, but rather by the deflecting surfaces on the knives and the deflector and their inclination relative to the direction of conveyance of the ice spiral. Care must be taken to ensure that the flow of ice between the knives is not obstructed, so that there is no congestion and no wedge action, but that the ice flows through the row of knives while being broken into pieces of ice.
  • This angle of attack of the deflecting surfaces can be varied in a range from 50 to approximately 60 ° against the conveying direction of the ice helix. A larger angle also affects the increase in the hardness of the ice, while a smaller angle favors the unimpeded outflow of the ice spiral or pieces of ice.
  • the knives can have a guide surface which is approximately parallel to the conveying direction of the ice helix or to the helix or with itself in the conveying direction slightly widening passage cross-section can be arranged opposite the delivery side of the coil. This prevents the cut ice chip from wedging between two knives and promotes the flow of ice through the obstacle.
  • the knives arranged next to one another in the association and the deflector can have such a shape and arrangement in the space between the spirals that the passage cross section for the ice bands or ice chips formed from the ice spiral remains approximately constant over the deflecting surfaces.
  • the knives can be arranged in the manner of a blade grid in the space between the helixes, with the knives being followed by a free space which merges into the ice outlet without a compacting effect.
  • This design prevents the shape of the ice pieces from changing on the way between the knives and the ice outlet.
  • the pieces of ice come into contact here only loosely and loosely, as far as is necessary for the conveyance of the pieces of ice.
  • two ice outlets can also be provided in order to convey the pieces of ice defined in their dimensions as quickly as possible and without mutual interference.
  • the knives are generally axially offset from one another in the conveying direction of the ice helix.
  • the knives are provided at the same height on the screw conveyor.
  • the size, shape and arrangement of the knives depends on the desired dimensions of the ice grain.
  • the knives can have an elongated shape. For strength reasons alone, you must have an appropriate material thickness.
  • the knives can also have an essentially triangular shape with a guiding surface and a deflecting surface starting from the cutting edge.
  • the knives in the dressing can be arranged so that they are offset from one another in the space between the helixes so that the end of the guide surface facing away from the cutting edge of that of two adjacent knives, which is at a greater distance from the conveying side of the helix, outside the projection of the one starting with the cutting edge other knife is perpendicular to the direction of conveyance of the ice helix.
  • this projection of the cutting edge hits approximately the area of the rear edge of the guide surface of the other knife.
  • the knife length is also tied to the width of the ice.
  • the helix of the screw conveyor and thus also the knives with their guide surfaces can be arranged with a pitch of 72 mm and an outer helix diameter of 90 mm.
  • the deflector is expediently arranged at the end of the screw of the screw conveyor.
  • the part of a cylinder 1 shown in FIG. 1 makes up about one third to one half of the entire cylinder.
  • the cylinder 1 has an inner cylinder wall 2, which is surrounded by a cooling coil 3 of a refrigeration unit, with which heat is dissipated.
  • the entire cylinder 1 has a more or less continuous insulation 4.
  • a screw conveyor 5 is arranged, which here is double-start and has the two coils 6 and 7.
  • the screw conveyor 5 has a core 8, so that a spiral space 9 is defined between this core 8 and two adjacent spirals 6 and 7. If the screw conveyor is of a single-start design and has only one helix 6, there is a spiral space 9 in an analogous manner.
  • the screw conveyor is driven in the direction of an arrow 10o so that the helix (s) 6, 7 engage the cylinder inner wall 2 forming thin-layer ice is continuously scraped off and conveyed relative to the screw conveyor 5 in the conveying direction according to arrow 11.
  • the conveying direction according to arrow 11 corresponds or is parallel to the pitch of the helix.
  • the spiral space 9 is filled more and more and finally completely with ice, the thin-layer ice being appropriately enriched, dewatered and compressed.
  • An ice spiral 12 is formed in the upper region, of which only a small part is shown for the sake of clarity.
  • the screw conveyor 5 merges into a helical-free cylindrical section 13, which is surrounded by an annular space 14, from which in turn there is a connection to two ice outlets 15, which are arranged so as to protrude radially from one another by 180 °.
  • a plurality of knives 16 and a deflector 17 are arranged on the screw conveyor 5 and are evenly distributed over the spiral space 9.
  • the deflector 17 connects directly to the conveying side 18 of the respective conveying helix 6 or 7.
  • the ice band 12 is cut into individual ice chips in this area, deflected and broken off, so that individual pieces of ice of appropriate shape are formed here.
  • the knives as well as the deflector have approximately the height of the helix 6 or 7. This determines the height of the ice cubes.
  • the distance between adjacent knives or the deflector 17 and the first knife 16 perpendicular to the conveying direction of the ice helix 12 according to arrow 11 gives the width of the ice pieces.
  • the coil space 9 is divided into three parts by the arrangement of a deflector 17 and three knives 16. This happens in two places with a two-speed screw conveyor 5.
  • FIGS. 2 to 4 serve to clarify the mode of operation and the processes. Excerpts from the screw conveyor 5 are shown in the transition region of interest in the plane.
  • the 2 shows a first embodiment of the knives 16 and the deflector 17, which are arranged here in a disk-like manner on the core 8 of the screw conveyor 5 in the manner shown.
  • the knives 16 each have a cutting edge 19 facing the conveying side 18 of the helix 6 and then a deflecting surface 20.
  • the knives 16 each have a guide surface 21 following the cutting edges 19, which is parallel to the conveying direction according to arrow 11 the ice helix 12 are formed or arranged.
  • the deflector 17 connects to the respective helix 6 or 7 on the conveying side 18 and in itself has only one deflecting surface 20.
  • the deflecting surface 20 on the knives 16 and the deflector 17 is at a certain angle with respect to the conveying direction of the ice helix 12 according to Arrow 11 turned on.
  • the angle between the deflecting surface 20 and the guide surface 21 is between 50 and 60 °, preferably approximately 55 °. This angle 22 is shown particularly clearly in FIG. 3.
  • the inclination of the deflecting surfaces 20 with respect to the conveying direction according to arrow 11 is decisive not only for the compression and drainage of the ice helix 12, but also for the deflection or deflection of the ice chips 23 according to the arrows 24.
  • This deflecting movement simultaneously causes the ice chips to develop of transverse cracks divided into individual pieces of ice or ice grains, this subdivision determining the length of the pieces of ice.
  • An ice grain or piece of ice 25 is shown in a schematic and idealized manner in FIG. 5, namely with its width 26, height 27 and length 28.
  • FIG. 3 again illustrates the situation in the embodiment according to FIG. 2.
  • the two adjacent knives 16 are arranged offset from one another in such a way that the cutting edge 19 of the knife 16 arranged closer to the conveying side 18 of the helix 6 is perpendicular to the guide surface 21 or
  • the direction of conveyance according to arrow 11 lies outside the area which strikes the adjacent knife 16, that is to say arranged further away from the spiral 6.
  • This ensures that the passage cross-sections 30 and 31 for the ice chips 23 on their way through the blade grid of the knives 16 do not cause any narrowing, but only a deflection.
  • the knives 16 can have roundings 32 in their rear end region following the guide surfaces 21.
  • FIG. 4 shows a very similar representation, but here the knives 16 and the deflector 17 are designed and arranged with a triangular cross section.
  • the deflector surfaces 20 are lengthened or enlarged in comparison to the embodiment of FIGS. 2 and 3.
  • the ice chips 23 are guided longer during the deflection according to the arrows 24, so that the break occurs comparatively later and less often, so that the total length 28 of the ice grains 25 grows through this measure.
  • the guide surfaces 21 are here inclined at a very small angle 33 with respect to the conveying direction of the ice helix-12 according to arrow 11 arranged that the passage cross-section 30 increases slightly on the conveyor path to a passage cross-section 30 '.
  • the passage cross section 31 will essentially not hinder the flow of ice chips 23 during the deflection according to arrows 24.
  • the compact, compressed and dewatered ice helix 12 is conveyed to fill the interspace 9 of the helix according to arrow 11.
  • a first ice chip 23 is now cut off and deflected by the first knife 16, which is assigned to the conveying side 18 of the helix, with this deflection breaking open according to the length 28 of the ice grains 25.
  • This process continues on each knife 16 which is arranged to the left, to the last ice chip 23, which then remains and is deflected with the aid of the deflector 17 and the deflecting surface 20 provided there.
  • the ice grains 25 formed and dimensioned in this way reach the ice outlet 15 or the ice outlets 15 without any further compression.
  • the ongoing conveyance pushes the ice grains 25 loosely out of the ice outlets 15, where they are used for their intended purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Screw Conveyors (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Confectionery (AREA)
EP83104192A 1982-05-03 1983-04-29 Dispositif pour la fabrication de la glace rompue Expired EP0093975B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3216473 1982-05-03
DE3216473A DE3216473C1 (de) 1982-05-03 1982-05-03 Vorrichtung zur Herstellung von Brucheis

Publications (2)

Publication Number Publication Date
EP0093975A1 true EP0093975A1 (fr) 1983-11-16
EP0093975B1 EP0093975B1 (fr) 1985-08-14

Family

ID=6162567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104192A Expired EP0093975B1 (fr) 1982-05-03 1983-04-29 Dispositif pour la fabrication de la glace rompue

Country Status (3)

Country Link
US (1) US4569209A (fr)
EP (1) EP0093975B1 (fr)
DE (1) DE3216473C1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414869C1 (de) * 1994-04-28 1995-05-11 Intercont Ziegra Eismasch Maschine zur Herstellung von Brucheis
DE19822228B4 (de) * 1998-05-18 2005-10-13 Maja-Maschinenfabrik Hermann Schill Gmbh Scherbeneismaschine
US6540067B1 (en) 2000-10-24 2003-04-01 Hoshizak America, Inc. Ice transporting assembly, ice making and transporting system and method for transporting ice
US6698228B2 (en) * 2001-11-02 2004-03-02 Moobella, Llc Method and apparatus for producing and dispensing an aerated and/or blended food product
US6860408B2 (en) * 2002-05-24 2005-03-01 Follett Corporation Auger apparatus for conveying ice
WO2006007924A1 (fr) * 2004-07-19 2006-01-26 Unilever Plc Produits contenant de la glace
BRPI0513624B1 (pt) * 2004-07-19 2020-03-31 Unilever Nv método de fabricação de um produto alimentício que contém gelo
AT7780U1 (de) * 2004-09-01 2005-08-25 Stefan Krichbaum Computermaus
CN100401001C (zh) * 2006-02-24 2008-07-09 哈尔滨工业大学 地表水源热泵***凝固热利用及防污染装置
US20120213899A1 (en) * 2009-10-29 2012-08-23 Alexander Aldred Process for producing frozen confectionery products

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126719A (en) * 1964-03-31 swatsick
US3230737A (en) * 1965-05-10 1966-01-25 Norman J Lunde Ice nugget producing machine
US3290896A (en) * 1965-10-21 1966-12-13 Lasco Ind Inc Salt water ice making machine having cleaning pin
US3326014A (en) * 1966-11-03 1967-06-20 Tastee Freez Ind Inc Ice flake making machine
DE1949504A1 (de) * 1969-10-01 1971-04-08 Coester Florens Dipl Ing Vorrichtung zum Herstellen von Eisstueckchen
DE2800540A1 (de) * 1977-01-12 1978-07-13 Douwe Egberts Tabaksfab Gegenstromkristallisator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962878A (en) * 1959-01-14 1960-12-06 Jesse J Shelley Means for discharging ice chips
US3034311A (en) * 1961-01-10 1962-05-15 King Seeley Thermos Co Ice making apparatus
US3196628A (en) * 1963-06-10 1965-07-27 Reynolds Products Ice making and dispensing machine
US3256710A (en) * 1963-06-27 1966-06-21 Manitowoc Co Apparatus for making frozen product
US3372558A (en) * 1967-05-24 1968-03-12 Westinghouse Electric Corp Auger type icemakers
US4429551A (en) * 1982-04-29 1984-02-07 Hoshizaki Electric Co., Ltd. Auger type icemaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126719A (en) * 1964-03-31 swatsick
US3230737A (en) * 1965-05-10 1966-01-25 Norman J Lunde Ice nugget producing machine
US3290896A (en) * 1965-10-21 1966-12-13 Lasco Ind Inc Salt water ice making machine having cleaning pin
US3326014A (en) * 1966-11-03 1967-06-20 Tastee Freez Ind Inc Ice flake making machine
DE1949504A1 (de) * 1969-10-01 1971-04-08 Coester Florens Dipl Ing Vorrichtung zum Herstellen von Eisstueckchen
DE2800540A1 (de) * 1977-01-12 1978-07-13 Douwe Egberts Tabaksfab Gegenstromkristallisator

Also Published As

Publication number Publication date
DE3216473C1 (de) 1983-08-25
US4569209A (en) 1986-02-11
EP0093975B1 (fr) 1985-08-14

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