EP0726433A1 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
EP0726433A1
EP0726433A1 EP96101479A EP96101479A EP0726433A1 EP 0726433 A1 EP0726433 A1 EP 0726433A1 EP 96101479 A EP96101479 A EP 96101479A EP 96101479 A EP96101479 A EP 96101479A EP 0726433 A1 EP0726433 A1 EP 0726433A1
Authority
EP
European Patent Office
Prior art keywords
cooling device
working fluid
evaporator housing
outflow opening
flow channels
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
EP96101479A
Other languages
German (de)
English (en)
Other versions
EP0726433B1 (fr
Inventor
Peter K. Dr. Maier-Laxhuber
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.)
Zeo Tech Zeolith Technologie GmbH
Original Assignee
Zeo Tech Zeolith Technologie 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 Zeo Tech Zeolith Technologie GmbH filed Critical Zeo Tech Zeolith Technologie GmbH
Publication of EP0726433A1 publication Critical patent/EP0726433A1/fr
Application granted granted Critical
Publication of EP0726433B1 publication Critical patent/EP0726433B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
    • F25B17/08—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a solid, e.g. salt
    • 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
    • F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
    • F25D2331/80—Type of cooled receptacles
    • F25D2331/803—Bottles

Definitions

  • the invention relates to a cooling device with an evaporation housing, which has flow channels in the interior and an opening for the outflow of working fluid vapor.
  • EP 0.577.869 A1 discloses a cooling system with a vacuum-tight working medium vapor manifold, to which any evaporator for a working medium and at least one sorbent filling, which the working medium can sorb, can be connected in a vacuum-tight manner. Liquid working fluid can evaporate in the evaporators and flow to the sorbent via the manifold. The evaporators can be separated from the manifold.
  • the solidified working fluid should release the stored cold to a product to be cooled, if possible over a long period in the range of the melting temperature of the working fluid. This requires the best possible contact with the evaporator housing.
  • the cooling device is usually intended to cool larger objects, for example a mobile trolley. When cooling such large-area units, it must be ensured that the stored cold is removed homogeneously from the refrigerated goods. Since the solidification often takes place in a negative pressure, especially with high-boiling work equipment, the large amounts of steam have to discharge it suitable and large-sized flow channels must be provided. In addition to the flow channels, special attention must be paid to the outflow opening.
  • the object of the invention is a cooling device which allows refilling of the evaporating working medium and solidification of the non-evaporated working medium for cold storage in a simple and inexpensive manner.
  • the object is achieved in a cooling device of the type mentioned at the outset by the characterizing features of claims 1, 9 and 10.
  • the cooling device according to the invention therefore consists essentially of an evaporator housing, which contains flow channels in the interior, which are connected to an opening for the escape of working fluid vapor so that when the evaporator housing is flooded, all the retention means are filled with liquid working fluid and that when the unnecessary liquid is removed The flow channels are completely emptied.
  • the outflowing working medium vapor can flow unhindered from the retention medium into a coupled sorbent filling.
  • All absorbent materials that hold the liquid working fluid in the desired area of the evaporator housing are suitable as retention agents.
  • Plastic sponges with open pores are advantageous.
  • mineral fibers with a capillary-like suction effect are also particularly suitable, as they can also transport the liquid working fluid to more remote areas of the evaporator housing. These materials, which are usually used for thermal insulation, become good heat conductors when wet.
  • the retaining means must also allow the working medium to solidify and ensure good heat transfer to the evaporator housing.
  • retention agents In addition to the use of absorbent materials, retention agents have also proven themselves, which form basin-like depressions which prevent the liquid working fluid from leaking out.
  • the depressions are to be designed in such a way that the liquid working fluid is not inadmissible even when the cooling device moves suddenly expires.
  • Shallow depressions have the advantage that the solidification of the working medium quickly reaches the bottom of the depression from the surface.
  • high-boiling agents especially water
  • the evaporator housing must therefore contain suitable support structures. Support materials are suitable for this, for example, which on the one hand form the flow channels and on the other hand fix the absorbent retention means or represent basin-shaped depressions for the working medium.
  • Perforated sheets and expanded metals have proven themselves, for example, which support opposite housing surfaces and at the same time fix the absorbent material outside the flow channels. Due to the open structure, the working fluid vapor can flow unhindered into the flow channels from the retention means. In cases where the evaporator housing should only give off the cooling effect on one side, according to the invention, thermal insulation can itself be provided in the evaporator housing.
  • Known insulation materials made of PU foam or foamed polyethylene material have proven successful. The flow channels and the basin-shaped depressions can already be incorporated into these materials. This creates a very cost-effective, vacuum-proof structure.
  • the insulation materials can also be glued or welded to the outer shell of the evaporator housing.
  • Plastics such as polyethylene, polypropylene or polystyrene are also particularly suitable as evaporator housings when water is used as the working medium.
  • weight and processing Even particularly complex housing shapes are easy to form with these materials, such as.
  • Closure flaps are advantageous which, when docked to a sorbent filling, the flow path release independently and in the undocked state, for example via the action of a spring, close the outflow opening.
  • the outflow opening is arranged in relation to the evaporator housing in such a way that both the flooding of the evaporator housing and the discharge of unrestrained working materials can take place through the outflow opening.
  • the outflow opening is arranged at the lowest point of the housing and the flow channels are designed so that the unbound, liquid working fluid can run off from the interior independently.
  • the retention means are flooded, for example, at specially provided charging stations which have a supply of liquid working fluid and a vacuum pump.
  • a method according to the invention for example, vacuum is generated within the evaporator housing by means of the vacuum pump, then liquid working fluid is passed via the outflow opening and the flow channels to the retaining means until all retaining means are filled with liquid working fluid and then by re-venting the system Unbound liquid working fluid is drained from the evaporator housing.
  • the evacuation of the housing ensures that the working fluid flows into all areas of the interior.
  • the excess working fluid runs out through the outflow opening. This means that no additional openings in the evaporator housing are necessary. In practical operation, it is usually not known how much working fluid is present in the retention means before flooding. In the manner according to the invention, the restraint is always filled with the maximum possible amount of working fluid.
  • the cooling device is coupled to a sorbent filling via the outflow opening.
  • the vaporous working fluid will partially evaporate in the retention means and the working fluid vapor will be passed through the outflow opening into the sorbent filling.
  • the sorbent filling adsorbs the working fluid vapor with the release of heat.
  • the working tool in the restraint solidifies through partial evaporation.
  • the cooling device can then temper the goods to be cooled for a longer period by melting the solidified working medium. If water is used as the working medium, the solidification takes place below an absolute pressure of 6 mbar.
  • the cooling device can be fixed to the sorbent station solely by the internal negative pressure without additional holding devices.
  • a quick and secure fixation of the cooling device, for example in trains or airplanes, is thus possible in a very simple and economical way.
  • Zeolite has proven itself as a sorbent for the application according to the invention and water as a working medium. Water freezes at 0 ° C. It is therefore ideal to guarantee a cooling temperature between 2 and 6 ° C. At lower cooling temperatures, the addition of agents that lower the freezing point of the water is recommended. Salts are ideal here, which, depending on the salt type and salt concentration, allow solidification temperatures of up to - 30 ° C.
  • FIG. 1 shows a bottle cooler in section, placed on a sorbent filling
  • FIG. 2 shows a cool box in a sectional view, docked to a filling station
  • FIG. 3 shows a cooling plate shown in two sections.
  • a bottle cooler (1) consists of an evaporator housing (2) which can hold a bottle to keep cool in a funnel-shaped double-jacket vessel.
  • the evaporator housing (2) forms continuous flow channels (6) in the interior, in which retention means in the form of basin-shaped depressions (7) are arranged on the inward-pointing housing wall (2).
  • An absorbent material (8) which is soaked with water is located in the annularly arranged depressions (7).
  • the bottle cooler (1) sits on a sorbent cartridge (8), the metal housing (9) of which has an opening (10). This opening (10) engages in the outflow opening (3) of the bottle cooler and forms a connection with the evaporator housing (2), which is designed to be vacuum-tight via an annular seal (11).
  • An opening pin (12) protrudes from the opening (10) of the sorbent cartridge (8) and, when the bottle cooler (1) is placed on it, the cap (4) against the spring (5) into the interior of the evaporator housing (2 ) and thus connects the flow channels (6) with the interior of the sorbent cartridge (8).
  • a zeolite filling (13) is arranged inside the sorbent cartridge (8), which adsorbs water vapor as soon as the air pressure in the evaporator housing (2) has dropped below the respective evaporation pressure of the liquid water.
  • a vacuum pump (14) is coupled to the sorbent cartridge (8) via a suction line (15).
  • the missing water is replenished in the retention basin (7), for example by filling tap water into the flow channels (6) via the outflow opening until the absorbent material (8) is saturated.
  • the excess water can flow out to a few drops via the flow channels (6) and the cap (4), which is slightly pressed in by hand.
  • a flooding of the evaporator housing (21) by a vacuum method is shown using the example of a cool box (20) shown in section.
  • the cooling box (20) consists of an evaporator housing (21) which is shaped into a box with an outer wall and an inner trough.
  • the cool box (20) can be closed by an insulated cover (22).
  • the storage vessel (31) In the upper area of the storage vessel (31) there is a ventilation valve (32) and a line (33) to a vacuum pump (34).
  • the storage vessel (31) is evacuated according to the invention via the vacuum pump (34) and the suction line (33). Due to the negative pressure generated at the same time, the water line (30) Interior of the evaporator housing (21) also evacuated.
  • the vacuum pump (34) is switched off and air is applied to the water surface (35) via the ventilation valve (32).
  • the water filling is pressed into the interior of the evaporator housing (21) via the water line (30) and pressed there via the flow channels (24) to the basin-shaped depressions (26).
  • the excess water can be sucked out of the evaporator housing (21) by closing the ventilation valve (32) and evacuating again via the vacuum pump (34).
  • the vacuum pump (34) should now build up a slightly lower pressure than when it was first evacuated.
  • the ventilation valve (32) can be dispensed with if the vacuum pump (34) is a self-venting pump.
  • Fig. 3 finally shows an evaporator plate (36) in two sections.
  • the section AA cuts the evaporator plate (36) in the transverse direction, while the section BB represents a section in the longitudinal direction.
  • a flow channel (39) leads from a discharge opening (38) to a plurality of smaller flow channels (40). Between them is an absorbent material (41), which consists essentially of mineral fiber strips.
  • the boundary between the flow channels (40) and the absorbent material (41) is formed by U-shaped expanded metal (42), which supports the evaporator housing (37) when the plates are evacuated.
  • a polyurethane foam is applied around the evaporator housing (37), which specifically directs the cooling effect of the evaporator plate (36) to the insulation-free side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP96101479A 1995-02-08 1996-02-02 Dispositif de refroidissement Expired - Lifetime EP0726433B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19504081 1995-02-08
DE19504081A DE19504081A1 (de) 1995-02-08 1995-02-08 Kühlvorrichtung

Publications (2)

Publication Number Publication Date
EP0726433A1 true EP0726433A1 (fr) 1996-08-14
EP0726433B1 EP0726433B1 (fr) 1999-04-28

Family

ID=7753423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101479A Expired - Lifetime EP0726433B1 (fr) 1995-02-08 1996-02-02 Dispositif de refroidissement

Country Status (3)

Country Link
EP (1) EP0726433B1 (fr)
AT (1) ATE179508T1 (fr)
DE (2) DE19504081A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037958A1 (fr) * 1998-01-24 1999-07-29 The University Of Nottingham Dispositif de transfert de chaleur
EP1022523A1 (fr) 1999-01-25 2000-07-26 Bass Public Limited Company Dispositif de transfert de chaleur
FR2810015A1 (fr) * 2000-06-13 2001-12-14 Thermagen Procede de fabrication d'un emballage de boisson auto-refrigerant et equipement de mise en oeuvre dudit procede
US6341491B1 (en) 1999-01-25 2002-01-29 Bass Public Limited Company Heat transfer device
WO2003059779A1 (fr) * 2002-01-18 2003-07-24 Thermagen Isolation d'un emballage auto-refrigerant a boissons
FR2836544A1 (fr) * 2002-02-28 2003-08-29 Thermagen Emballage de boisson auto-refrigerant et dispositif de declenchement associe
US6722153B2 (en) 2000-06-13 2004-04-20 Thermagen (S.A) Self-cooling package for beverages
US7240507B2 (en) 2001-11-16 2007-07-10 Thermagen Heat exchanger
WO2008015608A2 (fr) * 2006-08-04 2008-02-07 Koninklijke Philips Electronics N.V. Appareil ménager de distribution de boisson comprenant un dispositif de refroidissement adsorbant
US7390341B2 (en) 2001-11-16 2008-06-24 Thermagen Sa Liquid/gas state separating device
WO2009118670A2 (fr) 2008-03-25 2009-10-01 Koninklijke Philips Electronics N.V. Poste d’accueil et procédé de refroidissement pour un dispositif de traitement de la peau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020605B4 (de) 2008-04-24 2021-02-18 Schwörer Haus KG Heiz- und Kühlanordnung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002770A1 (fr) * 1990-08-01 1992-02-20 International Thermal Packaging, Inc. Dispositif refrigerant comprenant un agent de sorption et isole par une chambre a vide
DE4134322A1 (de) * 1991-10-17 1993-04-22 Jubt Karl Heinz Verfahren und vorrichtung zum kuehlen von austauschbaren getraenkebehaeltern oder aehnlichen fluessigkeitsbehaeltern
EP0543214A1 (fr) * 1991-11-19 1993-05-26 ZEO-TECH Zeolith Technologie GmbH Dispositif de refroidissement et procédé pour refroidir un fluide dans un récipient
EP0577869A1 (fr) * 1992-07-06 1994-01-12 ZEO-TECH Zeolith Technologie GmbH Système frigorifique avec un conduit collecteur étanche travaillant sous vide pour la vapeur du fluide de travail
EP0603638A1 (fr) * 1992-12-23 1994-06-29 ZEO-TECH Zeolith Technologie GmbH Adaptateur pour un système de sorption et méthode de sorption utilisant cet adaptateur
US5359864A (en) * 1992-06-30 1994-11-01 Sanden Corp. Cooling apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002770A1 (fr) * 1990-08-01 1992-02-20 International Thermal Packaging, Inc. Dispositif refrigerant comprenant un agent de sorption et isole par une chambre a vide
DE4134322A1 (de) * 1991-10-17 1993-04-22 Jubt Karl Heinz Verfahren und vorrichtung zum kuehlen von austauschbaren getraenkebehaeltern oder aehnlichen fluessigkeitsbehaeltern
EP0543214A1 (fr) * 1991-11-19 1993-05-26 ZEO-TECH Zeolith Technologie GmbH Dispositif de refroidissement et procédé pour refroidir un fluide dans un récipient
US5359864A (en) * 1992-06-30 1994-11-01 Sanden Corp. Cooling apparatus
EP0577869A1 (fr) * 1992-07-06 1994-01-12 ZEO-TECH Zeolith Technologie GmbH Système frigorifique avec un conduit collecteur étanche travaillant sous vide pour la vapeur du fluide de travail
EP0603638A1 (fr) * 1992-12-23 1994-06-29 ZEO-TECH Zeolith Technologie GmbH Adaptateur pour un système de sorption et méthode de sorption utilisant cet adaptateur

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037958A1 (fr) * 1998-01-24 1999-07-29 The University Of Nottingham Dispositif de transfert de chaleur
EP1022523A1 (fr) 1999-01-25 2000-07-26 Bass Public Limited Company Dispositif de transfert de chaleur
US6341491B1 (en) 1999-01-25 2002-01-29 Bass Public Limited Company Heat transfer device
US6722153B2 (en) 2000-06-13 2004-04-20 Thermagen (S.A) Self-cooling package for beverages
FR2810015A1 (fr) * 2000-06-13 2001-12-14 Thermagen Procede de fabrication d'un emballage de boisson auto-refrigerant et equipement de mise en oeuvre dudit procede
WO2001096796A1 (fr) * 2000-06-13 2001-12-20 Thermagen Sa Procede de fabrication d'un emballage de boisson auto-refrigerant et equipement de mise en oeuvre dudit procede
US6854280B2 (en) 2000-06-13 2005-02-15 Thermagen S.A. Method for making a self-refrigerating drink package and equipment therefor
US7390341B2 (en) 2001-11-16 2008-06-24 Thermagen Sa Liquid/gas state separating device
US7240507B2 (en) 2001-11-16 2007-07-10 Thermagen Heat exchanger
WO2003059779A1 (fr) * 2002-01-18 2003-07-24 Thermagen Isolation d'un emballage auto-refrigerant a boissons
US7266949B2 (en) 2002-01-18 2007-09-11 Thermagen Sa Insulation of a self-cooling beverage package
FR2834973A1 (fr) * 2002-01-18 2003-07-25 Thermagen Isolation d'un emballage de boisson auto-refrigerant
WO2003073019A1 (fr) * 2002-02-28 2003-09-04 Thermagen Emballage auto-refrigerant et dispositif de déclenchement associe
US7213401B2 (en) 2002-02-28 2007-05-08 Thermagen Self-refrigerating packaging and associated actuation device
FR2836544A1 (fr) * 2002-02-28 2003-08-29 Thermagen Emballage de boisson auto-refrigerant et dispositif de declenchement associe
WO2008015608A2 (fr) * 2006-08-04 2008-02-07 Koninklijke Philips Electronics N.V. Appareil ménager de distribution de boisson comprenant un dispositif de refroidissement adsorbant
WO2008015608A3 (fr) * 2006-08-04 2008-04-10 Koninkl Philips Electronics Nv Appareil ménager de distribution de boisson comprenant un dispositif de refroidissement adsorbant
WO2009118670A2 (fr) 2008-03-25 2009-10-01 Koninklijke Philips Electronics N.V. Poste d’accueil et procédé de refroidissement pour un dispositif de traitement de la peau
WO2009118670A3 (fr) * 2008-03-25 2010-03-11 Koninklijke Philips Electronics N.V. Poste d’accueil et procédé de refroidissement pour un dispositif de traitement de la peau
US8435251B2 (en) 2008-03-25 2013-05-07 Koninklijke Philips Electronics N.V. Docking station for a skin treatment device having a cooling member
RU2494661C2 (ru) * 2008-03-25 2013-10-10 Конинклейке Филипс Электроникс Н.В. Система, содержащая устройство для обработки кожи и док-станция для устройства для обработки кожи

Also Published As

Publication number Publication date
ATE179508T1 (de) 1999-05-15
DE59601741D1 (de) 1999-06-02
EP0726433B1 (fr) 1999-04-28
DE19504081A1 (de) 1996-08-14

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