WO1995024596A1 - Machine automatique pour la production de glace en flocons - Google Patents

Machine automatique pour la production de glace en flocons Download PDF

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Publication number
WO1995024596A1
WO1995024596A1 PCT/DE1995/000316 DE9500316W WO9524596A1 WO 1995024596 A1 WO1995024596 A1 WO 1995024596A1 DE 9500316 W DE9500316 W DE 9500316W WO 9524596 A1 WO9524596 A1 WO 9524596A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
refrigerant
channel
flake ice
ice machine
Prior art date
Application number
PCT/DE1995/000316
Other languages
German (de)
English (en)
Inventor
Joachim Schill
Original Assignee
Maja Maschinenfabrik Hermann Schill 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 Maja Maschinenfabrik Hermann Schill Gmbh filed Critical Maja Maschinenfabrik Hermann Schill Gmbh
Publication of WO1995024596A1 publication Critical patent/WO1995024596A1/fr

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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
    • F25C1/142—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 outer walls of cooled bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • the invention is based on a flake ice machine according to the preamble of the main claim.
  • the channel for conducting refrigerant runs on the surface of the jacket of the evaporator body, which is usually made of plastic.
  • the evaporator jacket which is typically made of metal, surrounds the evaporator body and covers the channel incorporated in the evaporator body, which is referred to as the refrigerant channel. Since the Evaporator jacket is not provided with a profile on the side facing the body, the refrigerant channel has a U-shaped cross section in most known cases.
  • the area of the evaporator jacket, which covers the refrigerant channel and through which the refrigerant thus flows, is not particularly large.
  • the size of the surface has a decisive influence on the temperature distribution on the outer surface of the evaporator roller on which the ice layer forms. In the case of a relatively small area, cooling by the refrigerant is not used optimally.
  • the temperature distribution on the outside of the evaporator jacket is not homogeneous, since the temperature distribution given by the arrangement of the refrigerant channel on the inner surface of the evaporator jacket facing the evaporator body is discreet and, due to heat conduction in the evaporator jacket, only changes into a constant, homogeneous distribution.
  • the transition from discrete to continuous homogeneous distribution depends on the thickness of the evaporator jacket.
  • a homogeneous temperature distribution on the surface of the evaporator roller is a prerequisite for the formation of a uniform layer of ice on the evaporator roller.
  • the temperature directly on the outer surface of the evaporator roller is higher than directly at the refrigerant channel due to losses in the heat conduction by a value dependent on the material of the evaporator body and the evaporator jacket. This allows the cooling of the by the arrangement of the refrigerant channel in the evaporator body
  • REPLACEMENT LEAF Evaporator roller is not used optimally by the refrigerant. Losses occur.
  • the evaporator roller of the flake ice machine according to the invention with the characterizing features of the main claim has the advantage that the refrigerant channel for conducting the refrigerant runs in the evaporator jacket.
  • the area in the evaporator jacket over which the refrigerant flows is significantly increased compared to the corresponding area in known evaporator rollers, which has the consequence that the cooling of the evaporator jacket is optimized and thus a higher ice output is achieved.
  • the inventive arrangement of the refrigerant channel also makes it approximately homogeneous
  • the refrigerant channel is arranged directly below the surface of the evaporator roller and runs in the radial direction as far as possible outside. Losses that occur in the heat conduction between the refrigerant channel and the outer surface of the evaporator roller are minimized by the small distance between the channel and the outer surface.
  • the production of an evaporator jacket with a refrigerant channel is possible in a simple manner.
  • the channel open towards the evaporator body is shaped during the manufacture of the evaporator jacket - for example using the metal casting process - or is subsequently incorporated into the jacket.
  • the refrigerant channel in the evaporator jacket runs like a screw. Thanks to this channel, the refrigerant flows through as large an area of the evaporator jacket as possible.
  • the refrigerant channel runs in a parallel manner in each case in planes perpendicular to the axis of rotation of the evaporator roller, two adjacent sections being connected to one another. This makes it possible for the refrigerant channel to be guided over the entire evaporator jacket and, in particular, for refrigerant to also flow through the end regions of the evaporator roller.
  • the supply channel and the discharge channel open directly into the refrigerant channel.
  • the cross section of the supply channel and the discharge channel are adapted to the cross section of the refrigerant channel in the transition region. There is no need for special seals or connecting pieces in the transition area.
  • the supply channel and the discharge channel are arranged in opposite end regions of the evaporator roller, so that the coolant flows through the entire refrigerant channel from one end region of the evaporator roller to the other before it is discharged through the discharge channel.
  • the feed channel and the discharge channel are arranged in the same end region of the evaporator roller.
  • the cross section of the refrigerant channel is U-shaped with a semi-circular bottom section and parallel side walls.
  • This type of duct is particularly easy to manufacture, has a large surface area and enables the refrigerant to flow evenly in the refrigerant duct.
  • the cross section of the refrigerant channel is rectangular. This means that the refrigerant channel has an even larger surface area than a channel with a U-shaped cross section if all other parameters such as the diameter of the roller, the distance between the turns of the channel and the width and depth of the channel are the same.
  • Other cross sections for example triangular, pentagonal, hexagonal, etc., are also possible.
  • the evaporator jacket has a system of a plurality of refrigerant channels for conveying refrigerant.
  • the length of a channel from the supply channel to the discharge channel is shortened, the length of time the refrigerant stays in the evaporator roller and thus the temperature of the Refrigerant increases less strongly while passing through the refrigerant duct with the same efficiency than with a longer refrigerant duct.
  • the flow resistance is reduced, which means that a lower pressure is sufficient for the uniform flow of the refrigerant. This system enables particularly effective cooling of the roller.
  • each of the refrigerant channels of the system extends from one end region of the evaporator roller to the other and is parallel to the other refrigerant channels.
  • the screw-like channels are arranged so that adjacent turns belong to different channels.
  • the refrigerant channels each run only in one part of the evaporator jacket, as seen in the longitudinal direction of the evaporator roller. This is another way of arranging a system of refrigerant channels in the evaporator roller.
  • each refrigerant channel of the channel system there is a separate supply channel for each refrigerant channel of the channel system.
  • the supply channels can be arranged in different end regions of the evaporator roller, so that the refrigerant flows through the channels from both sides of the evaporator roller and the flow direction is different in adjacent channels. In this way, a particularly uniform cooling of the roller is achieved.
  • the evaporator body is against the evaporator jacket by an O-ring in each of the two end regions Evaporator roller sealed.
  • a very good seal is achieved in a simple and inexpensive manner.
  • FIG. 1 shows a schematic view of a
  • FIG. 4 shows a longitudinal section through a flake ice machine according to the invention, the evaporator roller of which has a system of several refrigerant channels,
  • Fig. 1 shows a flake ice machine according to the invention with an evaporator roller 1, which is rotatably arranged in a container 2 on a shaft 3 and immersed in water 5 up to a level 4.
  • evaporator roller 1 By rotating the evaporator roller 1, it is wetted with water. Due to the cooling effect of the refrigerant flowing through the refrigerant channel 6 of the evaporator roller 1, a thin layer of ice forms on the lateral surface 7 of the evaporator roller 1, especially after it emerges from the water, which layer is detached from the lateral surface with the aid of a fixed ice scraper (not shown in the drawing) and likewise Not shown collection container is supplied.
  • the evaporator roller 1 essentially consists of an evaporator body 8 and an evaporator jacket 9.
  • the refrigerant channel 6 runs in the form of windings of a screw for guiding the refrigerant.
  • the shaft 3 has an axial bore 12 into which both the feed channel 13, which runs radially in the evaporator body 8, and the discharge channel, which likewise runs radially, open. In Fig. 1 only the feed channel 13 can be seen.
  • the refrigerant is fed to the refrigerant channel 6 and discharged again via the feed and discharge channel.
  • evaporator jacket 9 is shown in longitudinal section. Since the evaporator body 8 in this illustration
  • the refrigerant channel 6 has a U-shaped cross section.
  • the bottom section 15 facing the lateral surface 7 of the evaporator roller 1 is round, the side walls 16 facing the shaft are parallel.
  • An O-ring is inserted into the annular groove 17, which ensures that the evaporator body 8 and the evaporator jacket 9 are sufficiently sealed from one another.
  • Fig. 3 shows the evaporator roller 1 in cross section.
  • the refrigerant channel 6 is drawn in a greatly simplified manner, since a spatial representation of a revolution of the helical turns 11 of the refrigerant channel could confuse the viewer.
  • the supply duct 13 of the refrigerant running radially in the evaporator body 8 and the axial bore 12 in the shaft 3 can be seen.
  • the supply duct 13 has a round cross section, its diameter corresponds to the height of the refrigerant duct 6. The same applies to the discharge duct.
  • FIG. 4 shows a flake ice machine, the evaporator roller 18 of which is equipped with a system of two screw-like refrigerant channels 19, 20. Both channels extend over the entire roller.
  • the supply channels 21, 22 and the discharge channels 23, 24 are arranged for both refrigerant channels 19, 20 on the same side of the roller 18. It is also possible to arrange them on different sides of the roller.
  • FIG. 5 shows a further possibility of arranging a system of refrigerant channels in an evaporator roller 25.
  • Each of the two refrigerant channels 26, 27 shown runs in each case only in a section of the evaporator roller 25.
  • the refrigerant is supplied and discharged for both channels 26, 27 from the same side of the Roller 25 from over axial
  • the two refrigerant channels 37, 38 run helically in the evaporator jacket, as in FIG. 5, but the arrangement of the supply and discharge channels 39, 40 and 41, 42 and the axial bores 43, 44 is different .
  • the supply of the refrigerant into the refrigerant channels 37, 38 takes place in both channels in the middle of the evaporator roller 36.
  • the refrigerant is transported via the axial bore 43 to the center of the evaporator roller 36 and via the two feed channels 39, 40 into the refrigerant channels 37, 38 headed.
  • the refrigerant flows in both refrigerant channels 37, 38 in the end regions of the evaporator roller 36 into the discharge channels 41, 42.
  • the axially running bore 44 is partially covered by the bore 43 in the drawing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Confectionery (AREA)

Abstract

L'invention concerne une machine automatique pour la production de glace en flocons comportant un cylindre d'évaporateur (1) animé d'un mouvement de rotation par un moteur (10), et composé d'un élément d'évaporateur (8) et d'une gaine d'évaporateur (9). Le canal (6) transportant le réfrigérant est disposé dans la gaine d'évaporateur (9).
PCT/DE1995/000316 1994-03-09 1995-03-08 Machine automatique pour la production de glace en flocons WO1995024596A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4407844.7 1994-03-09
DE4407844 1994-03-09

Publications (1)

Publication Number Publication Date
WO1995024596A1 true WO1995024596A1 (fr) 1995-09-14

Family

ID=6512260

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000316 WO1995024596A1 (fr) 1994-03-09 1995-03-08 Machine automatique pour la production de glace en flocons

Country Status (2)

Country Link
DE (1) DE19507868B4 (fr)
WO (1) WO1995024596A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507864B4 (de) * 1995-03-08 2005-12-22 Maja-Maschinenfabrik Hermann Schill Gmbh Scherbeneisautomat
DE19629447B4 (de) * 1996-07-23 2005-05-19 Maja-Maschinenfabrik Herrmann Schill Gmbh Scherbeneismaschine
DE102011017038A1 (de) * 2011-04-14 2012-10-18 Weber Maschinenbau Gmbh Breidenbach Vorrichtung zur Erzeugung von Scherbeneis

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913697C (de) * 1944-03-21 1954-06-18 Hermann Berstorff Maschb Ansta Walze zum Bearbeiten von Kautschuk, Kunststoff od. dgl. mit im Innern vorgesehenen, schraubenlinienfoermig verlaufenden Leitrinnen fuer das Heiz- oder Kuehlmittel
DE1244097B (de) * 1962-01-13 1967-07-13 Ramisch & Co Dr Walze mit beheizbarer Oberflaeche fuer die Druckbehandlung von Textil-, Papier- und Kunststoffbahnen
FR2338474A1 (fr) * 1976-01-13 1977-08-12 Ramisch Kleinewefers Kalander Cylindre de calandrage a noyau metallique et a enveloppe de matiere plastique
DE8905100U1 (de) * 1989-04-22 1989-07-06 Walzen Irle GmbH, 5902 Netphen Beheizbare Kalanderwalze
EP0371177A2 (fr) * 1986-02-24 1990-06-06 Italimpianti of America, Inc. Cylindres à régulation thermique du bombé
EP0556856A2 (fr) * 1992-02-20 1993-08-25 WEBER EISTECHNIK GmbH Dispositif pour la fabrication de glace en copeaux

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501193C3 (de) * 1966-01-10 1978-04-06 Maja-Maschinenfabrik Hermann Schill Kg, 7601 Goldscheuer Verfahren und Vorrichtung zum Herstellen von Feineis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913697C (de) * 1944-03-21 1954-06-18 Hermann Berstorff Maschb Ansta Walze zum Bearbeiten von Kautschuk, Kunststoff od. dgl. mit im Innern vorgesehenen, schraubenlinienfoermig verlaufenden Leitrinnen fuer das Heiz- oder Kuehlmittel
DE1244097B (de) * 1962-01-13 1967-07-13 Ramisch & Co Dr Walze mit beheizbarer Oberflaeche fuer die Druckbehandlung von Textil-, Papier- und Kunststoffbahnen
FR2338474A1 (fr) * 1976-01-13 1977-08-12 Ramisch Kleinewefers Kalander Cylindre de calandrage a noyau metallique et a enveloppe de matiere plastique
EP0371177A2 (fr) * 1986-02-24 1990-06-06 Italimpianti of America, Inc. Cylindres à régulation thermique du bombé
DE8905100U1 (de) * 1989-04-22 1989-07-06 Walzen Irle GmbH, 5902 Netphen Beheizbare Kalanderwalze
EP0556856A2 (fr) * 1992-02-20 1993-08-25 WEBER EISTECHNIK GmbH Dispositif pour la fabrication de glace en copeaux

Also Published As

Publication number Publication date
DE19507868A1 (de) 1995-11-02
DE19507868B4 (de) 2005-05-19

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