EP1076798B1 - Vorrichtung zum einbringen von co2-schnee in behälter zur kühlung des behälterinhaltes order des behälters - Google Patents

Vorrichtung zum einbringen von co2-schnee in behälter zur kühlung des behälterinhaltes order des behälters Download PDF

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Publication number
EP1076798B1
EP1076798B1 EP99929097A EP99929097A EP1076798B1 EP 1076798 B1 EP1076798 B1 EP 1076798B1 EP 99929097 A EP99929097 A EP 99929097A EP 99929097 A EP99929097 A EP 99929097A EP 1076798 B1 EP1076798 B1 EP 1076798B1
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EP
European Patent Office
Prior art keywords
dry ice
container
snow
gas
pipe
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.)
Expired - Lifetime
Application number
EP99929097A
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German (de)
English (en)
French (fr)
Other versions
EP1076798A1 (de
Inventor
Klaus LÖSCHE
Gerhard Dirksen
Ralf Wiesmann
Dirk Sikken
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.)
Craft Tech GbR
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Craft Tech GbR
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Application filed by Craft Tech GbR filed Critical Craft Tech GbR
Publication of EP1076798A1 publication Critical patent/EP1076798A1/de
Application granted granted Critical
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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow

Definitions

  • the present invention relates to a device for introducing CO 2 snow into a container for cooling the contents of the container or the container, with a container, a CO 2 snow generating device for producing CO 2 snow, one with the CO 2 snow Production device connected CO 2 snow injection device with a snow tube for injecting the generated CO 2 snow into the container, a CO 2 gas separation device for separating CO 2 gas and CO 2 snow in the area of the snow tube and a CO 2 gas extraction device for extracting separated CO 2 gas, the CO 2 gas separating device comprising an outer tube surrounding the snow tube and arranged coaxially therewith, which in the region of the side of the snow tube opposite the CO 2 snow discharge side with the CO 2 gas extraction device is connected.
  • a device is known for example from US-A-4,415,346.
  • the goods to be processed must be tempered within a certain range in order to avoid damage or poorer processability of the goods.
  • the introduction of mechanical energy for example in the form of mixing or homogenizing, increases the temperature in the container and thus also the goods.
  • Some materials have low thermal conductivity, high layer thickness, high viscosity or other properties that require direct cooling during the machining process.
  • the temperatures depending on the different types of pastries, must be kept as constant as possible in the range from 23 ° C to 30 ° C (for example 24 ° C +/- 0.5 ° C), in order to keep the to be able to master the enzymatic and chemical processes that are crucial for the preparation of the dough undiminished.
  • direct cooling of raw materials, intermediate and end products requires that the coolant in the material to be processed is not harmless. It is also important that the cooling process does not cause any dilution or any other change in the concentration, as is possible with direct cooling with water ice, in the material. Direct cooling with CO 2 snow fulfills these criteria.
  • the invention is therefore based on the object of the known device to further develop that the aforementioned disadvantages avoided, or at least reduced become.
  • this object is achieved in that the outer tube protrudes over the same in the longitudinal direction on the CO 2 snow discharge side of the snow tube.
  • the CO 2 snow production device comprises a supply device for supplying liquid CO 2 and an evaporation device for evaporating the liquid CO 2 .
  • the evaporation device is advantageously arranged in the region of the side of the snow tube opposite the CO 2 snow discharge side.
  • the evaporation device advantageously comprises a nozzle.
  • the snow tube and the outer tube advantageously end in the head space of the container.
  • the snow tube and the outer tube are arranged vertically are.
  • the snow tube and the outer tube are arranged at such an angle that the CO 2 snow falls into the container.
  • the snow tube on the CO 2 snow discharge side is advantageously widened. This ensures a more even discharge of the CO 2 snow into the container.
  • the outer tube is widened at its end located on the CO 2 snow discharge side of the snow tube.
  • the snow tube and / or the outer tube is conical is / are designed.
  • the suction device advantageously comprises a fan.
  • the device is characterized by a temperature control device for controlling the temperature of the container contents or the container itself by injecting a corresponding amount of the CO 2 snow.
  • the temperature control device is a target temperature input device, a temperature sensor for measuring the actual temperature of the Container contents, a temperature comparison device for comparing the actual temperature with the target temperature and a control device for controlling one in the supply line 18 arranged valve comprises.
  • Another particular embodiment of the invention is characterized by an oxygen partial pressure control device for controlling the oxygen partial pressure in the head space of the container by suctioning off a corresponding amount of the CO 2 gas.
  • a special embodiment can be characterized by a carbon dioxide partial pressure control device for controlling the carbon dioxide partial pressure in the head space of the container by measuring the carbon dioxide partial pressure and extracting a corresponding amount of the CO 2 gas.
  • the CO 2 gas fraction is measured directly compared to the embodiment with an oxygen partial pressure control device.
  • the container is a container for kneading bread or Cake batter is.
  • the invention is based on the surprising finding that the relative to the outer tube shorter snow tube allows extraction of the non-converted CO 2 snow CO 2 before CO entering 2 gas at all in the container, which results in better monitoring and adjusting the oxygen partial pressure in the head space enables the container, and also prevents displacement of oxygen and an entry of CO 2 gas into the material in the container and prevents contact with the same.
  • the device according to the invention has a very high CO 2 snow production efficiency, which corresponds almost to the theoretical efficiency of 60%.
  • the CO 2 gas-suction device may be used in combination with the outer tube 2 snow injection phase also be used after the CO to suck the replicated from the CO 2 snow CO 2 gas.
  • the device according to the invention thus enables a particularly good cooling of reaction processes by means of the cold content of CO 2 snow, without the material to be cooled coming into significant contact with CO 2 gas and being damaged.
  • the device according to the invention can also be very helpful in maintaining the cold chain when transporting food and other sensitive materials.
  • a suitable insulating container for example, a suitable insulating container (container) can be "snowed” with CO 2 snow very easily. If this is carried out on the upper part of the container, the snow is evenly distributed from top to bottom, which is distributed very evenly on the packaged food (boxes, etc.).
  • the desired transport or intermediate storage temperature of, for example, -18 ° C can thus be maintained for a long time (for example 8 hours).
  • the device 16 has a supply line 18 for supplying liquid CO 2 , an outer tube 20 with an inner snow tube (not shown) for injecting CO 2 snow generated in the device 16 into the kneading container 10 and an exhaust line 22 for removing CO 2 gas on.
  • FIG. 2 shows details of the device 16 according to the invention from FIG. 1.
  • the outer tube 20 there is a coaxially arranged snow tube 21, the upper end of which is connected to the supply line 18 via a nozzle 24 and a solenoid valve 26.
  • the outer tube 20 and the snow tube 21 are designed conically, the cross sections of the outer tube 20 and the snow tube 21 increasing towards the CO 2 snow discharge side of the snow tube 21.
  • the upper end of the outer tube 20 is connected to the exhaust pipe 22 via a fan 28.
  • the lower end of the outer tube 20 protrudes in the longitudinal direction over the snow tube 21.
  • FIG 3 shows the device according to the invention during the production of CO 2 snow.
  • Liquid CO 2 is injected through the nozzle 24 into the snow tube 21 via the supply line 18 and a corresponding control of the solenoid valve 26. Relaxation changes the physical state of the liquid CO 2 and creates CO 2 snow (indicated by flakes) and CO 2 gas (indicated by black dots).
  • the CO 2 snow serves to cool the bread dough directly by sedimenting it and absorbing heat from the kneading container 10 and the bread dough located therein. During this heat transfer, the CO 2 snow passes into the gaseous phase.
  • the CO 2 gas which emerges from the snow pipe 21 at the same time as the CO 2 snow is being produced, is drawn in by the fan 28 in the suction direction indicated by the arrows and discharged via the exhaust line 22.
  • FIG. 4 shows the suction of the CO 2 gas produced by the cooling process after the CO 2 snow injection has ended in the container by means of the fan 28 in the suction direction indicated by the arrows.
  • a temperature control device for controlling the temperature of the container contents regulates the temperature of the material to be cooled in the range of -30 ° C. and by measuring the temperature of the container contents and correspondingly controlling the solenoid valve 26 and thus the amount of CO 2 snow added 60 ° C.
  • the oxygen partial pressure in the head space of the kneading container 10 is regulated by means of an oxygen partial pressure control device (not shown) by measuring the oxygen partial pressure and correspondingly controlling the fan 28 and thus extracting a corresponding amount of the CO 2 gas.
  • FIG. 5 shows a schematic illustration of a dough kneading machine with a further special embodiment of the device according to the invention in side view, the kneading container of the dough kneading machine being shown transparently.
  • the dough kneading machine has a kneading container 10, a container lid 12 and a kneading arm 14.
  • the particular embodiment of the device 16 according to the invention for introducing CO 2 snow into the kneading container 10 for cooling the dough is an integral part of a switch box 30 (see FIG. 6) for a central control unit of the dough kneading machine.
  • the device 16 has a supply line 18 for supplying liquid CO 2 from a CO 2 container 19, an outer tube 20 with an inner snow tube 21 for injecting CO 2 snow generated in the device 16 into the kneading container 10 and an exhaust gas line 22 Removal of CO 2 gas.
  • the supply of liquid CO 2 is made possible or prevented by a solenoid valve 26.
  • the CO 2 snow formation is brought about by a nozzle 24 in the form of a full jet nozzle.
  • a control panel 32 serves to display the target or actual temperature of the dough and to set the same.
  • the actual temperature of the dough during the kneading is detected by a temperature sensor 34 in the form of an infrared temperature probe. 6 shows these aforementioned details.
  • the container lid 12 of the Kneading container 10 are attached in such a way that the outer tube 20 with its dimensions protrudes into the kneading container 10.
  • the outer tube 20 may not with the Kneading arm 14 come into contact.
  • the temperature sensor 34 should be on the container lid 12 or the outer tube 20 are mounted so that it only with its infrared beam Surface of the dough and not that of the kneading arm 14 or the kneading container 10 reached. This must be ensured even when the kneading container 10 is filled to a minimum. Further The temperature sensor 34 must not come into contact with the dough.
  • the process-controlled dough cooling during the kneading takes place as follows: The temperature of the dough (actual temperature) during the kneading is continuously detected via the temperature sensor 34. The actual temperature is compared with the desired dough temperature (target temperature), which was manually entered at the beginning of the kneading process via the control panel 32 of a relay (not shown).
  • the relay controls the solenoid valve 26. Liquid CO 2 is supplied to the solenoid valve 26 via the supply line 18 in the form of a supply hose.
  • the relay opens the solenoid valve 26, and when the setpoint temperature is undershot, the solenoid valve 26 remains closed.
  • the resulting CO 2 gas is separated in the injection phase via the outer tube 20.
  • the fan switches to the second stage with the solenoid valve 26 closed at the same time.
  • the separated CO 2 gas and the simulated CO 2 gas are thus conducted outside by means of the fan via the exhaust line 22.
  • the device 16 can advantageously be controlled via the central control unit of the dough kneading machine. It can thus be achieved that the injection of the CO 2 snow takes place only after the mixing phase. This is expedient because CO 2 snow is poorly distributed in the dough in the mixing phase. Furthermore, the injection of the CO 2 snow can be stopped at the same time as or shortly before the kneading time expires. The second variant also ensures a distribution of the CO 2 snow injected shortly before the kneading time expires.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Carbon And Carbon Compounds (AREA)
EP99929097A 1998-05-08 1999-05-10 Vorrichtung zum einbringen von co2-schnee in behälter zur kühlung des behälterinhaltes order des behälters Expired - Lifetime EP1076798B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19820588A DE19820588C2 (de) 1998-05-08 1998-05-08 Vorrichtung zum Einbringen von CO¶2¶-Schnee in Behälter zur Kühlung des Behälterinhaltes oder des Behälters
DE19820588 1998-05-08
PCT/DE1999/001437 WO1999058913A1 (de) 1998-05-08 1999-05-10 Vorrichtung zum einbringen von co2-schnee in behälter zur kühlung des behälterinhaltes order des behälters

Publications (2)

Publication Number Publication Date
EP1076798A1 EP1076798A1 (de) 2001-02-21
EP1076798B1 true EP1076798B1 (de) 2002-10-02

Family

ID=7867076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99929097A Expired - Lifetime EP1076798B1 (de) 1998-05-08 1999-05-10 Vorrichtung zum einbringen von co2-schnee in behälter zur kühlung des behälterinhaltes order des behälters

Country Status (6)

Country Link
US (1) US6427482B1 (es)
EP (1) EP1076798B1 (es)
AT (1) ATE225489T1 (es)
DE (2) DE19820588C2 (es)
ES (1) ES2183574T3 (es)
WO (1) WO1999058913A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951520A1 (de) * 1999-10-26 2001-05-03 Linde Gas Ag Verfahren und Vorrichtung zur Maischebehandlung
DE10129217B4 (de) * 2001-06-19 2006-07-06 Air Liquide Deutschland Gmbh Verfahren zum Kühlen von Waren in einem Isolierbehälter unter Einsatz eines Kühlmoduls
EP1444899A1 (en) * 2003-02-06 2004-08-11 CFS Bakel B.V. Gas injection into meat and apparatus for use therein
SI2336684T1 (sl) * 2009-12-21 2013-07-31 Messer France S.A.S. Polnilna naprava za polnjenje prekata posode s hladilnim sredstvom, pritrjenega na posodo s hladilnim sredstvom s kriogenskim hladilnim sredstvom
NO335251B1 (no) * 2011-03-29 2014-10-27 Trosterud Mekaniske Verksted As Fremgangsmåte og anordning for distribusjon av tørrissnø
US9291296B2 (en) 2012-11-06 2016-03-22 Polar Tech Industries, Inc. Blowback shield for carbon dioxide discharge horn
DE102021002056B4 (de) 2021-04-20 2023-02-23 Messer Se & Co. Kgaa Vorrichtung zum Dosieren von Kohlendioxidschnee
DE102022132086A1 (de) * 2022-12-02 2024-06-13 Mario Principe Trockeneisschnee-Erzeugungsvorrichtung und Verfahren zur Herstellung von Trockeneisschnee

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786644A (en) * 1972-06-02 1974-01-22 Airco Inc System for changing the static electrical charge on co{11 {11 ice particles
NL7317330A (es) * 1972-12-22 1974-06-25
US3861168A (en) * 1973-09-17 1975-01-21 Union Ice Company Carbon dioxide cooling machine
FR2253193A1 (en) * 1973-12-03 1975-06-27 Air Liquide Refrigeration of prods partic food prods - using carbon dioxide snow
US3952530A (en) * 1974-08-20 1976-04-27 Lewis Tyree Jr CO2 -snow-making
US4415346A (en) * 1978-10-11 1983-11-15 Love James H Carbon dioxide snow horn for dry ice production
BR9207143A (pt) * 1990-10-23 1995-12-12 Pallet Reefer Co Resfiador/congelador partátil auto-sulciente para uso em aeroplanos e em caminhões de transporte comuns não-frigerados
IT1267144B1 (it) * 1994-11-15 1997-01-28 Sancassiano Spa Macchina impastatrice per prodotti alimentari
US5657642A (en) * 1995-11-24 1997-08-19 Reznikov; Lev Apparatus for cooling food products
DE19716844C1 (de) * 1997-04-22 1998-12-10 Gct Gase Und Cryo Technik Gmbh Vorrichtung zur Erzeugung von Kohlensäureschnee

Also Published As

Publication number Publication date
ES2183574T3 (es) 2003-03-16
WO1999058913A1 (de) 1999-11-18
US6427482B1 (en) 2002-08-06
ATE225489T1 (de) 2002-10-15
DE19820588A1 (de) 1999-11-11
DE59902944D1 (de) 2002-11-07
DE19820588C2 (de) 2002-07-18
EP1076798A1 (de) 2001-02-21

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