Classifications

• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
  • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
  • A23G9/04—Production of frozen sweets, e.g. ice-cream
  • A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
  • A23G9/222—Freezing drums
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
  • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
  • A23G9/04—Production of frozen sweets, e.g. ice-cream
  • A23G9/08—Batch production
  • A23G9/12—Batch production using means for stirring the contents in a non-moving container
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
  • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
  • A23G9/04—Production of frozen sweets, e.g. ice-cream
  • A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
  • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
  • A23G9/04—Production of frozen sweets, e.g. ice-cream
  • A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
  • A23G9/225—Ice-cream freezing and storing cabinets
  • A23G9/227—Details
• • 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
  • F25B21/00—Machines, plants or systems, using electric or magnetic effects
  • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect

Definitions

• the invention initially relates to a method for operating a container suitable for freezing its contents, wherein in a wall of the container for cooling Peltier elements are arranged, which are actively cooled on its hot side by means of circulating in a separate circuit coolant, which in turn actively cooled becomes.
• Peltier elements During cold generation / ice production with Peltier elements, a cold and a hot side are created on the element. The resulting cooling capacity is directly dependent on the heat dissipation via the hot side of the element. This heat dissipation is usually done via heat sink and / or fan and / or a water cooling. Peltier elements work effectively with small temperature differences between the hot and the cold side. In order to achieve greater temperature differences or a greater cooling capacity between hot and cold side, it requires a cooling of the hot side. The temperature differences of more than 30 K necessary for ice production are achieved, for example, with water cooling and additional heat exchangers in the form of a fan on the hot side of the elements.
• EP 0 133 844 Bl shows and describes a device for ice cream, in particular in the form of a household appliance, in which according to a first embodiment, the cold generating Peltier elements are actively cooled backwards through a coolant circuit.
• This coolant circuit has a heat exchanger which cooperates with a motor-driven fan.
• a technical problem of the invention is seen as a method of the present in question Type in particular with regard to the active cooling of the coolant to further improve.
• the coolant circuit ensures that the hot side of the Peltier elements is cooled continuously and for a long time with a preferably minus-grade liquid.
• a much greater amount of heat can be removed from the hot side of the Peltier elements and, in turn, a negative temperature sufficient for ice formation can be achieved on the cold side of the Peltier elements.
• the coolant has ambient temperature and warms relatively quickly. With increasing warming of the cooling water sinks the temperature difference to the ambient temperature, which is necessary to transport amounts of heat.
• the latent heat storage by means of the cooling circuit, which is associated with a separate Peltier element is cooled.
• the Peltier technology is also used for charging the latent heat storage.
• a separate Peltier element can be provided.
• the Peltier element which cools the container serving for ice making serves at the same time as the charge of the latent heat store.
• a separate Peltier element is provided which acts indirectly on the latent heat accumulator via the cooling circuit.
• the entire cooling system is more preferably divided into two stages.
• the latent heat storage is, for example, cooled down with Peltier technology over a period of four hours, during which the cooling cycle is preferably reduced to a minimum during this first stage.
• the heat exchanger area between the cooling circuit and the Peltier elements to be assigned to the ice preparation is excluded during this first stage.
• the container in which the latent heat storage is located so that no heat energy is lost to the environment. If the latent heat storage is loaded, then the complete cooling circuit can be opened and the icing process can begin.
• the coolant is preferably kept in circulation by a pump, more preferably by an electric pump.
• the invention further relates to a Eiseleispunungs- device with a suitable for icing its contents container, whose wall for cooling a (first) Peltier element is assigned, said Peltier element is actively cooled on its hot side by means of a heat transfer medium, wherein further the heat transfer medium in a separate cooling circuit is performed.
• the cooling circuit is associated with a cold reservoir in the form of a latent heat accumulator.
• a Eiseleis washerungs- device is created whose pervious Peltier element on the back, that is kept on the hot side by means of the cooling circuit at a preferably constant temperature.
• the cold reservoir is formed by a latent heat storage, which was preloaded in a separate process.
• Such a memory can transmit a constant temperature over a longer period, so in the present case to the coolant.
• This is promoted in a closed pipe system, which cooling tube passes through the latent heat storage or the heat storage material for heat exchange.
• an arrangement may be provided, in which the cooling line on an outer wall the memory is passed. In the usual way, such cooling pipes are arranged spirally for heat exchange, so as to provide a sufficiently large surface area.
• the latent heat storage is preferably loaded via a Peltier element.
• a Peltier element This may be the same Peltier element which is associated with the wall of the container suitable for icing its contents.
• the cooling circuit is assigned a separate Peltier element for charging the latent heat storage. This is energized only to charge the latent heat storage, while the activation of the first Peltier element is performed only for icing of the container contents.
• the latent heat accumulator can be charged at relatively low energy, which thereafter emits a constant temperature to the cooling circuit over a relatively long period of time.
• the cooling circuit for the time separation of the charge of the latent heat storage of the ice cream preparation from the cooling of the first Peltier element can be decoupled. This further contributes to the increase in the efficiency of the device.
• the coolant does not flow around the container area with the first Peltier elements provided here.
• the cooling circuit for charging the latent heat storage is kept as small as possible to counteract losses.
• the coolant is used for heat transfer between the other Peltier element and the latent heat accumulator, wherein further the further Peltier element does not necessarily have to act directly on the coolant or the pipes receiving the coolant. Also an indirect action is conceivable, for example, with the interposition of another circuit. If the latent heat storage device is charged, the further Peltier elements are switched off and the large cooling circuit which includes the sleeve-like cooling sections of the container having the first Peltier elements is unlocked.
• the storage material of the latent heat storage is preferably based on paraffin or salt.
• the liquefaction / solidification temperature of the latent heat storage medium is preferably chosen below 0 ° C, ideally the liquefaction temperature and the solidification temperature are the same. By all means, these temperatures may also be different, albeit only by a difference of a few degrees C.
• the solidification temperature can be minus 8 ° C, while a liquefaction is already achieved at minus 5 ° C. In general, the temperature is between minus 1 ° C to minus 10 ° C, so ideally at minus 5 ° C.
• the efficiency of the Peltier elements for generating cooling capacity in the area suitable for icing its contents container is considerably improved according to the proposed invention.
• the ice making process is accelerated.
• the cold reservoir (latent heat storage) can be recharged at any time.
• the advantages of a latent heat storage and the Peltier elements are advantageous and low energy combined.
• the cooling capacity of the Peltier elements can be optimally used as the hot side is optimally cooled.
• the heat loss amounts are kept small, with the cooling of the Peltier elements also taking place at constant temperature.
• FIG. 2 shows a partially sectioned illustration through the base area of a container suitable for freezing its contents and the receptacle area of the device which surrounds the container base in the manner of a sleeve;
• Fig. 3 shows a schematic representation of the device for icing a container contents.
• an ice-cream preparation device 1 which is part of a food processor 2 in the exemplary embodiment shown, is shown and described.
• a container 3 can be assigned. This is placed in a receptacle 4 of the food processor 2.
• the agitator bottom is associated with an agitator 5, which arranged on a in the kitchen machine 2 below the receptacle 4, not shown Electric drive is operated.
• control in particular speed control of the agitator 5 is made via a control panel 6 of the food processor 2. Further functions can be controlled via this control panel, for example, a heating of the container 3 in the region of its bottom, thus, for example, for cooking food in the container 3 or, as explained further, for cooling up to icing of the contents of the container.
• the container 3 has a handle 7.
• the upwardly facing container opening can be closed by a removable cover 8.
• the receptacle 4 is essentially formed of two oppositely arranged, tower-like jaws 9. The upper free end portions of these jaws 9 form shoulders 10. In these shoulder areas locking elements 11 are provided in the form of horizontal grooves. These act together with corresponding counter-elements in the form of radially projecting fingers 12 of the lid 8. After inserting the container 3 in the receptacle 4, the lid 8 is placed and locked by screwing the fingers 12 in the groove-like locking elements 11 of the shoulders 10, wherein further the retracting fingers 12 provide a release of the electrical functions, in particular a release of the agitator 5.
• the food processor 2 is further designed for ice cream, for which purpose the same container 3 can be used.
• a container 3 with heating integrated in the container bottom may also be provided for the usual food preparation, optionally with heat being influenced, while for ice cream preparation a container 3 is preferred which does not have this bottom heating.
• the agitator 5 is exchanged for ice cream preparation against a corresponding agitator, so in particular against a scraper-like blades exhibiting.
• a refrigeration device 14 is initially provided in the cuff-like manner the base region of the container 3 comprehensive portion of the receptacle 4. This consists of several sleeve-like in the receptacle 4, the base portion 15 comprehensively arranged Peltier elements 16. These are electrically controlled.
• the upper regions of the Peltier elements cool, while the lower ones heat up.
• the stream thus "pumps" heat from one side to the other and creates a temperature difference between the surfaces.
• Peltier elements 16 in the receptacle 4 can also be provided in the receptacle 4 directly in the base region of the receptacle 3, even with corresponding electrical contacting.
• a cooling circuit 17 is provided.
• a water-glycol mixture flows through a pipeline 18 which produces a circulation.
• a section of this pipeline 18 comprises the region having the Peltier elements 16 in the manner of a sleeve, for the large-area cooling of the same.
• the cooling circuit 17 is driven by an electric pump 19th Cooling undergoes the circulating mixture through a provided, a cold reservoir bidding latent heat storage 20, through which the tube power is 18 guided helically.
• the latent heat storage 20 is double-walled and serves as a heat exchanger.
• the storage material may be based on paraffin or salt.
• the Eiseiszurungs- device 1 To start up the Eiseiszurungs- device 1 is a preparation in the form of a loading of the latent heat storage 20 is required.
• the energy is stored in the latent heat storage by means of Peltier technology, for which purpose further Peltier elements 21 are provided. These are arranged facing with their cold side of the pipe wall of the cooling circuit 17, while the hot side are provided with cooling fins 22.
• the entire cooling system is divided into two stages.
• a first stage the latent heat storage 20 is cooled down over a period of about four hours using Peltier technology, for which purpose the Peltier elements 21 are activated.
• the cooling cycle area which concerns the first Peltier elements 16 will not pass, for which purpose a bypass line 23 is provided. This is opened by means of electrically actuated valves 24, while the path over the Peltier elements 16 is blocked via further valves 25. Accordingly, very little energy is needed to cool down and charge the latent heat storage 20.
• the container in which the latent heat storage 20 is located is insulated, so that no heat energy is lost to the environment.
• the circulating water-glycol mixture is maintained at a constant temperature of minus 5 ° C. Accordingly, the hot side of the supply-side Peltier elements 16 is cooled with the minus-5 ° C cold coolant mixture, so that 16 sets a temperature of minus 10 to minus 20 ° C on the cold side of the Peltier elements. Due to the fact that the hot side of the Peltier elements 16 are kept constant at -5 ° C. by the latent heat accumulator 20, optimum cooling takes place with a small temperature difference.
• the content to be frosted 13 thus has - taking into account temperature losses due to the heat transfer / heat losses - a minimum temperature of minus 5 ° C.
• ice cream preparation can be achieved while supplying low energy at a constant temperature over a longer period of time.
• Peltier elements 16 By reversing the polarity of the Peltier elements 16 and the concomitant exchange of cold and hot side, they can in a further embodiment also for heating a content received in the container 3 this content. For example, in particular for keeping food warm, which is particularly the case when the device is arranged in a food processor 2 as shown.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Food Science & Technology (AREA)
• Polymers & Plastics (AREA)
• Manufacturing & Machinery (AREA)
• Confectionery (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38462490

Family Applications (1)

Country Status (7)

Families Citing this family (6)

Family Cites Families (5)

• 2006
  • 2006-05-23 DE DE200610024031 patent/DE102006024031A1/de not_active Withdrawn
• 2007
  • 2007-05-21 EP EP07729333A patent/EP2023743A1/de not_active Withdrawn
  • 2007-05-21 CN CNA200780016457XA patent/CN101437408A/zh active Pending
  • 2007-05-21 WO PCT/EP2007/054889 patent/WO2007135130A1/de active Application Filing
  • 2007-05-21 RU RU2008150864/13A patent/RU2008150864A/ru not_active Application Discontinuation
  • 2007-05-21 MX MX2008014951A patent/MX2008014951A/es active IP Right Grant
  • 2007-05-23 TW TW96118341A patent/TW200808195A/zh unknown

Non-Patent Citations (1)

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