EP1782004A1 - Cylindre de refroidissement pour machine a glace en paillettes - Google Patents

Cylindre de refroidissement pour machine a glace en paillettes

Info

Publication number
EP1782004A1
EP1782004A1 EP05752779A EP05752779A EP1782004A1 EP 1782004 A1 EP1782004 A1 EP 1782004A1 EP 05752779 A EP05752779 A EP 05752779A EP 05752779 A EP05752779 A EP 05752779A EP 1782004 A1 EP1782004 A1 EP 1782004A1
Authority
EP
European Patent Office
Prior art keywords
path
jacket
cylinder
channel
cylindrical body
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
EP05752779A
Other languages
German (de)
English (en)
Other versions
EP1782004B1 (fr
Inventor
Cesarino Maroli
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.)
Brema Ice Makers SpA
Original Assignee
Brema Ice Makers SpA
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 Brema Ice Makers SpA filed Critical Brema Ice Makers SpA
Priority to PL05752779T priority Critical patent/PL1782004T3/pl
Publication of EP1782004A1 publication Critical patent/EP1782004A1/fr
Application granted granted Critical
Publication of EP1782004B1 publication Critical patent/EP1782004B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C1/00Producing ice
    • F25C1/12Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14Producing 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

Definitions

  • the invention relates to a cooling cylinder for forming ice flakes.
  • This type of ice which is widely used to keep at a low temperature food inside containers for display or transportation, is obtained by means of apparatus which use a cooling cylinder such as, for example, that forming the subject of Italian Utility Model No. 0216265.
  • the cylinder of these apparatus consists of a central body in the form of a tubular interspace which is closed at the ends by two flanges/ the interspace has, arranged inside it, radial baffles which define a channel extending along the generatrices of the cylinder.
  • the refrigerating fluid is made to evaporate inside the channel and thus cools the outer surface of the cylinder onto which the water is sprayed: the latter freezes and is scraped off in the form of flakes by a knife rotating about the cylinder.
  • the idea for solving this problem consists in providing a novel cooling cylinder in which the path along which the refrigerating fluid flows has a winding progression with coil-like sections, which are preferably short compared to the height of the cylinder, such that the turbulence of the flow and consequently also the heat exchange increases.
  • the flow is obtained with a channel formed on the surface of the cylinder body, closed externally by a tubular jacket mounted on the aforementioned body.
  • FIG. 1 shows a cooling cylinder according to the invention
  • - Fig. 2 shows a cross-section through the above cylinder, along the plane A-A of Fig. 1;
  • - Fig. 3 shows in detail the outer surface of the cooling cylinder according to Fig. 1; - Fig. 4 shows the planar extension of the surface according to Fig. 3;
  • FIG. 5 shows a horizontal cross-section through the apparatus according to Fig. 1 along the plane B-B;
  • Fig. 6 shows another application of the invention.
  • FIGS. 10 show an overall view of a cooling cylinder 10, according to the invention, which is intended to be used in combination with a compressor and a condenser, not shown in the drawings, in accordance with the usual operating principle of known refrigerating units.
  • the cylinder 10 acts instead as an evaporator of the unit and comprises a central body 20 with a cylindrical geometry, to which a jacket 40 is joined externally; in accordance with a preferred embodiment, the cylindrical body 20 is made of high-impact strength steel (instead of aluminium) and the jacket 40 is welded onto it at the ends so as not to require seals for sealing thereof.
  • cylindrical body 2Q may be made of aluminium and the jacket 40 shrunk on it, while the seal between them is ensured by means of sealing gaskets.
  • Respective flanges 80 and 81 are mounted on the top and bottom ends of the body 20, thus closing off the space inside them; these flanges are constrained together with isolating spacers 82 and 83 by means of bolts 84 and the upper flange has a neck 86 through which two pipes 22, 24 for entry and return, respectively, of a refrigerating fluid pass.
  • a collar 87 is mounted on the outside of the neck 86 and is able to rotate on revolving bearings 88; a gear wheel 89 is fixed (by means of screws visible in Fig. 2) around the collar 87, while a scraper knife 90 projects radially therefrom; the knife has a series of comb-like blades 91 of the known type and is connected at the bottom by means of a radial tie-rod 92 to a rotating ring 93, so as to be free to rotate with respect to the vertical axis of the cylinder.
  • the apparatus in which the cooling cylinder 10 is used has a motor-driven pinion
  • the latter is formed as a result of freezing of the water which is sprayed onto the outside of the jacket 40 by means of a pipe (not shown in the drawings) which rotates about the cylindrical body 20, integrally with the knife 91.
  • This cooling action is achieved as a result of evaporation of the refrigerating fluid along a channel 50 (visible in detail in Figs. 3 and 4) formed on the outer surface of the cylindrical body 20; as can be seen, this channel 50 has a coil-like progression along superimposed horizontal circular bands 55a, 55b, 55c, 55d which are connected together by means of vertical sections 53.
  • the jacket 40 is joined to the cylinder 20 so that the respective surfaces are juxtaposed and the channel 50 closed on the outside, thus defining a continuous path for the refrigerating fluid, at the ends of which an inlet 61 and an outlet 62 connected respectively to the pipes 22 and 24 are situated. Therefore, the refrigerating fluid supplied by means of a compressor (not shown in the drawings) reaches the cylinder 20 in the liquid condition, passes into the pipe 22, enters the inlet 61 which is situated at the bottom of the body 20 (c.f. Fig. 3) and flows along the channel 50 along which it evaporates, cooling the jacket 40; when it reaches the outlet 62 it is in the gaseous state and is evacuated from the top via the return pipe 24.
  • a compressor not shown in the drawings
  • the methods with which the ice is formed are substantially similar to the known methods, in the sense that the water is sprayed onto the outer surface of the jacket 40 and freezes in contact with it when it is cooled from the inside by the refrigerating fluid which flows inside the channel 50; the ice is scraped off by the blades 91 of the knife 90 which rotates about the axis of the cylinder 20 as a result of operation by means of the gear wheel 89.
  • the coil-like progression of the channel 50 which extends in the form of the various circular bands 55a, b, c, d causes a turbulent flow of the refrigerating fluid, thus favouring the heat exchange for cooling the jacket 40; in this connection it is important to note the considerable difference from the Italian Utility Model referred to further above in which the refrigerating fluid flows along straight sections oriented in the manner of the generatrices of the cooling cylinder so as to produce in fact a laminar movement without turbulence.
  • a possible modification consists in forming the path for the refrigerating fluid by means of a raised rib on the wall of the body 20, instead of forming thereon the channel 50 as in the example shown in the drawings; it is obvious, however, that by mounting the jacket 40 externally, a fluid flow path equivalent to that already seen is obtained.
  • the channel 50 (or aforementioned rib) may be formed on the jacket 40 instead of on the cylinder 20, which in this case will instead be smooth; in other words it is possible to reverse the position of the smooth or channelled surfaces which together form the coil-like flow path of the refrigerating fluid.
  • This path may obviously be configured differently provided that it is able to promote the turbulence and therefore the heat exchange for cooling the jacket 40 of the cylinder 10; for example, instead of following the circular bands 55a, 55b, 55c, 55d which extend horizontally with respect to the cylindrical body 20, it could be possible to form a channel 50 with vertical sections, namely arranged along the generatrices of the body 20 as in the already mentioned Italian Utility Model, but with the coil-like progression explained above.
  • Il “1 Il” This machine comprises a tubular body 120 on the outer surface of which a channel 150 identical to that formed on the cylindrical body 20 seen above is formed; a rotating screw (not shown in the drawing) is housed inside the body 120.
  • a jacket or sleeve 140 is mounted on the outside of the tubular body 120 and closes off the channel 150 so as to define together therewith a path in which the refrigerating fluid supplied by an output pipe 122 and a return pipe 124 flows.
  • the bottom part of the tubular body 120 is filled with water supplied by a pipe 125 and raised upwards by the screw, while at the same time the refrigerating fluid circulates inside the channel 150 and, evaporating, cools the wall of the tubular body 120.
  • the ice is formed inside the cylinder, instead of outside, as in the example of Figs. 1-5; the operating principle and the advantages achieved by the channel are in any case the same. It is therefore clear that the teaching of the invention is applicable with success to all ice-making machines where a wall is cooled by means of heat exchange with a refrigerating fluid which flows in contact with the said wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Confectionery (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP05752779A 2004-07-16 2005-05-19 Cylindre de refroidissement pour machine a glace en paillettes Active EP1782004B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05752779T PL1782004T3 (pl) 2004-07-16 2005-05-19 Cylinder chłodzący do urządzenia wytwarzającego płatki lodu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001437A ITMI20041437A1 (it) 2004-07-16 2004-07-16 Cilindro di raffreddamento per apparecchiature di formatura di ghiaccio in scaglie
PCT/EP2005/052305 WO2006008203A1 (fr) 2004-07-16 2005-05-19 Cylindre de refroidissement pour machine a glace en paillettes

Publications (2)

Publication Number Publication Date
EP1782004A1 true EP1782004A1 (fr) 2007-05-09
EP1782004B1 EP1782004B1 (fr) 2010-09-08

Family

ID=34970198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05752779A Active EP1782004B1 (fr) 2004-07-16 2005-05-19 Cylindre de refroidissement pour machine a glace en paillettes

Country Status (7)

Country Link
EP (1) EP1782004B1 (fr)
AT (1) ATE480743T1 (fr)
DE (1) DE602005023486D1 (fr)
ES (1) ES2349796T3 (fr)
IT (1) ITMI20041437A1 (fr)
PL (1) PL1782004T3 (fr)
WO (1) WO2006008203A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101742312B1 (ko) 2016-01-05 2017-05-31 송화종 제빙기용 냉각드럼
KR101939048B1 (ko) * 2017-01-10 2019-01-17 주식회사 대일 2중관형 해수 샤베트 아이스 제조장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU627651B2 (en) * 1990-07-13 1992-08-27 Alden Commercial Refrigeration Pty. Ltd. Ice making apparatus
US5799726A (en) * 1996-01-23 1998-09-01 Frank; Jimmy I. Refrigerated mixing chamber and method for making same
US6253573B1 (en) * 1999-03-10 2001-07-03 Specialty Equipment Companies, Inc. High efficiency refrigeration system
US6343416B1 (en) * 1999-07-07 2002-02-05 Hoshizaki America, Inc. Method of preparing surfaces of a heat exchanger
US20010045275A1 (en) * 2000-05-25 2001-11-29 Hoshizaki Denki Kabushiki Kaisha Cylindrical heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006008203A1 *

Also Published As

Publication number Publication date
ITMI20041437A1 (it) 2004-10-16
WO2006008203A1 (fr) 2006-01-26
DE602005023486D1 (de) 2010-10-21
EP1782004B1 (fr) 2010-09-08
ATE480743T1 (de) 2010-09-15
ES2349796T3 (es) 2011-01-11
PL1782004T3 (pl) 2011-03-31

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