EP1373104A1 - Procede et dispositif d'elimination d'un melange de glace/eau d'un contenant par l'intermediaire d'un refoulement - Google Patents

Procede et dispositif d'elimination d'un melange de glace/eau d'un contenant par l'intermediaire d'un refoulement

Info

Publication number
EP1373104A1
EP1373104A1 EP02714634A EP02714634A EP1373104A1 EP 1373104 A1 EP1373104 A1 EP 1373104A1 EP 02714634 A EP02714634 A EP 02714634A EP 02714634 A EP02714634 A EP 02714634A EP 1373104 A1 EP1373104 A1 EP 1373104A1
Authority
EP
European Patent Office
Prior art keywords
drain
ice
water
water mixture
container
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.)
Withdrawn
Application number
EP02714634A
Other languages
German (de)
English (en)
Inventor
Pieter Jellema
Jelle Luutzen Nijdam
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.)
Solutherm BV
Original Assignee
Solutherm BV
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 Solutherm BV filed Critical Solutherm BV
Publication of EP1373104A1 publication Critical patent/EP1373104A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F25C1/16—Producing ice by partially evaporating water in a vacuum
    • 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
    • F25C5/00—Working or handling ice
    • F25C5/20—Distributing ice

Definitions

  • This invention relates to a method for removing an ice-water mixture via a drain from a container, such as a chamber for producing an ice-water mixture under a low pressure and whilst cooling, wherein the ice-water mixture in the container is stirred, as known from NL-C- 1006921.
  • An ice-water mixture can be produced by supplying water to a, for instance tubular, chamber in which such a low pressure and temperature prevail that water is evaporated and freezes onto a cold surface placed in the chamber, while through the evaporation heat is abstracted from the non-evaporated water, which is thereby converted into an ice-water mixture.
  • the object of the invention is to provide a method with which adjacent the drain freezing can be prevented and remedied without necessitating the provision of moving parts that require a lead-through to the surroundings that is to be sealed.
  • this is achieved in a method of the type described in the opening paragraph hereof if the ice-water mixture is guided to the drain whilst flowing over a container wall, and adjacent the drain water is supplied in such a manner that an impulse is exerted on the ice- water mixture to be drained, so that at the drain a hydromechanical mixing is created.
  • An effective impulse can be exerted on the ice-water mixture to be drained if, according to a preferred mode of the invention, the water is supplied via at least one sprayer above the drain. As a result, the ice-water mixture can be held in motion and be pushed into the drain.
  • the water is supplied in the form of a jet into or at the drain, it being then particularly preferred that the jet is supphed while directed tangentially to the drain.
  • a turbulent mixing can be accomplished with a cyclone effect in the drain, so that the ice, lighter compared with the water, is urged away from the wall of the drain, which further reduces the risk of freezing on.
  • Another aspect concerns boiling phenomena occurring in a process under low pressure.
  • the relatively thin water vapor that is being formed should be discharged optimally with minimal flow resistance. This too is promoted by the cyclone action, because the mass density of vapor is still lower than that of ice, so that centrally in the drain an upward vapor discharge is created. Without cyclone action, the vapor flow would have to move through a swirling mass, with all the concomitant loss of flow.
  • water be used in the form of an ice-water mixture.
  • This ice-water mixture can then be drawn, for instance, from the drained ice-water mixture and be recirculated.
  • the production process and the production capacity are then affected to the least possible extent.
  • water having a temperature above the freezing point of the ice-water mixture it may be desirable that water having a slightly higher temperature which is yet to be converted to an ice-water mixture through evaporation and cooling.
  • the invention further relates to a device for removing an ice-water mixture via a drain from a container, such as a chamber for producing an ice-water mixture under low pressure and under cooling, in which container stirring means are accommodated, which device is characterized, according to the invention, by stirring means in the form of water supply means disposed adjacent the drain.
  • a device for removing an ice-water mixture via a drain from a container such as a chamber for producing an ice-water mixture under low pressure and under cooling
  • container stirring means are accommodated
  • stirring means in the form of water supply means disposed adjacent the drain.
  • sprayers placed directly above the drain, but it is also possible to arrange sprayers disposed above the drain at a distance therefrom, with a view to preventing drying up of any part of the guide surfaces present in the container for forming an ice-water mixture by having water flow over them.
  • the water supply means comprise at least one pipe terminating in or adjacent the drain, which pipe can serve to generate a cyclone effect, in addition to an impulse effect.
  • Effective prevention of clogging at the drain with the least possible disturbance of the production process can be accomplished in accordance with a further embodiment of the invention if the water supply means in the form of a sprayer or a pipe are connected, remote from the drain, with a drain conduit connected to the drain.
  • the water supply means in the form of a sprayer or a pipe are connected, remote from the drain, with a drain conduit connected to the drain.
  • the water supply means in the form of a sprayer or a pipe are connected with a supply conduit leading to the container, for water to be transformed into an ice-water mixture.
  • the water supply means the one time with a source with water having a temperature near the freezing point of the ice-water mixture and the other time with a source with water having a higher temperature, or in a desired mixed ratio of the two.
  • Fig. 1 shows a first embodiment in cross section
  • Fig. 2 shows a second embodiment in longitudinal section
  • Fig. 3 shows a section along the line III-III in Fig. 2;
  • Fig. 4 shows a part of a top plan view of a third embodiment on an enlarged scale
  • Fig. 5 shows a section along the line V-V in Fig. 4.
  • Fig. 1 schematically represents, in cross section, a cylindrical container 1, in which a reduced pressure can be created by means not shown.
  • a cooling body 2 is disposed above two inclined guide members 3, which are provided along their upper edge with distribution means 4, with which a water film running down along the guide members 3 can be created.
  • the distribution means 4 are supplied by a water supply 5.
  • the temperature of the non-evaporating water of the water film on the guide members 3 is lowered, as a result of which an ice-water mixture is formed, which collects adjacent the undersides of the guide members 3 and is removed from the container 1 via a drain 6, partly under the action of a pump 7 in a conduit 8 connected to the drain 6.
  • a sprayer 9 Placed above the drain 6 is a sprayer 9, by which the ice-water mixture to be drained can be kept moving, such that it does not proceed to freeze on the wall in the vicinity of the drain 6 or lump together, as a result of which the drain 6 could become blocked and clogged.
  • the sprayer 9 is supplied by a conduit 10 communicating with the water supply 5 via a conduit 11 including a cock 12, and/or by a conduit 13 connected via a cock 14 and an ice filter 15 with the conduit 8 at a point downstream of the pump 7.
  • the sprayer 6 can be supphed at will with warmer water coming from the water supply 5 or with colder water coming from the drain 6, or with a mixture of the two.
  • it will be preferred to spray water or ice-water mixture coming from the conduit 8 because this has substantially the same temperature as the ice-water mixture at the drain 6. If ice deposition is feared, or if ice deposits which are being formed or have been formed are to be removed, it may be elected to supply or admix water having a higher temperature.
  • Fig. 1 further represents a conduit 16, with which water from the conduit 11 and/or the conduit 13 can be supphed to a point in the drain 6, which embodiment will be further elucidated in the discussion of Figs. 4 and 5.
  • Figs. 2 and 3 represent a device for producing an ice-water mixture which, similarly to the device shown in Fig. 1, is provided with a container 1, a cooling body 2, guide members 3, distribution means 4, a drain 6, a sprayer 9 and a conduit 10. In such a device, a number of drains 6 may be present, which may then each be provided with a sprayer. However, if a centrally arranged drain 6 is opted for, as shown in Fig. 2, then the guide members 3 connect to a slightly inclined bottom 17.
  • Figs. 4 and 5 represent on an enlarged scale the part of the device around the drain 6.
  • a pipe 19 is arranged which terminates in the drain 6 tangentially thereto. This pipe 19 is to be supplied via the conduit 16 designated in Fig.
  • sprayers and/or pipes may be disposed adjacent the drain, for instance for generating a cyclone effect on the one hand and, on the other, for advancing the ice-water mixture to the drain and keeping the environment of that drain wet.
  • containers having more than one drain, each having drainage provisions are also conceivable, naturally, are containers having more than one drain, each having drainage provisions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

La présente invention concerne un procédé et un dispositif d'élimination d'un mélange de glace-eau par l'intermédiaire d'un drain (6) d'un contenant (1), tel qu'une chambre permettant de produire un mélange de glace-eau à basse pression et dans des conditions de refroidissement, le mélange de glace-eau étant dirigé vers le drain (6) tout en s'écoulant sur une paroi (3) du contenant, et de manière adjacente au drain (6), de l'eau est amenée, de sorte qu'une impulsion est exercée sur le mélange de glace-eau à drainer, ce qui permet de créer un mélange hydromécanique adjacent au drain. Le moyen d'alimentation peut comprendre un pulvérisateur (9) et un tuyau dirigé tangentiellement (16) disposés dans le drain ou près du drain.
EP02714634A 2001-03-28 2002-03-27 Procede et dispositif d'elimination d'un melange de glace/eau d'un contenant par l'intermediaire d'un refoulement Withdrawn EP1373104A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1017722 2001-03-28
NL1017722A NL1017722C2 (nl) 2001-03-28 2001-03-28 Werkwijze en inrichting voor het via een afvoer verwijderen van een ijs/water-mengsel uit een houder.
PCT/NL2002/000200 WO2002076856A1 (fr) 2001-03-28 2002-03-27 Procede et dispositif d'elimination d'un melange de glace/eau d'un contenant par l'intermediaire d'un refoulement

Publications (1)

Publication Number Publication Date
EP1373104A1 true EP1373104A1 (fr) 2004-01-02

Family

ID=19773149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02714634A Withdrawn EP1373104A1 (fr) 2001-03-28 2002-03-27 Procede et dispositif d'elimination d'un melange de glace/eau d'un contenant par l'intermediaire d'un refoulement

Country Status (3)

Country Link
EP (1) EP1373104A1 (fr)
NL (1) NL1017722C2 (fr)
WO (1) WO2002076856A1 (fr)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1257057A (fr) * 1960-02-13 1961-03-31 Lorraine Anciens Ets Dietrich Procédé pour faciliter la vidange des réservoirs de produits pulvérulents et dispositif pour la mise en oeuvre du procédé
US3955717A (en) * 1969-08-06 1976-05-11 Landau Richard E Methods and apparatus for flowing archable materials
US3713564A (en) * 1971-06-25 1973-01-30 Butler Manufacturing Co Method and means for facilitating the flow of granular materials
US4160618A (en) * 1978-02-13 1979-07-10 David Sensibar Irrevocable Trust Liquid agitator for hopper
DK147833B (da) * 1981-04-13 1984-12-17 Sabroe & Co As Fremgangsmaade og anlaeg til fremstilling af loes is med stor kapacitet
WO1983000850A1 (fr) * 1981-09-09 1983-03-17 Voss, Hans Batiment brise-glace
JPS5974821A (ja) * 1982-10-19 1984-04-27 Hitachi Zosen Corp 粉粒体貯槽等における架橋破壊装置
SE460557B (sv) 1987-06-10 1989-10-23 Stal Refrigeration Ab Foerfarande och anordning foer att framstaella isslurry i flera vakuumkammare som omvaexlande avfrostas
US5035733A (en) * 1987-07-17 1991-07-30 Sunwell Engineering Company Ltd. Ice storage and distribution unit
NL1006921C2 (nl) * 1997-09-02 1999-03-04 Fri Jado Bv Inrichting en werkwijze voor het bereiden van een ijsbrij.
NL1010857C2 (nl) 1998-12-21 2000-06-23 Doomernik Bv Werkwijze en inrichting voor het maken van een water-ijsmengsel.
GB9906139D0 (en) * 1999-03-18 1999-05-12 Curle William Materials transportation and storage apparatus
NL1014202C2 (nl) 2000-01-27 2001-07-30 Solutherm B V Werkwijze en inrichting voor het produceren van een ijs-watermengsel.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02076856A1 *

Also Published As

Publication number Publication date
NL1017722C2 (nl) 2002-10-01
WO2002076856A1 (fr) 2002-10-03

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