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
  • 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
• • 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
  • F25B27/00—Machines, plants or systems, using particular sources of energy
  • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
• • 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
  • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
  • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
• • 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
  • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
  • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
  • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
• • 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
  • F25D23/00—General constructional features
  • F25D23/06—Walls
  • F25D23/069—Cooling space dividing partitions
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
• • 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
• • 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
  • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
  • F25D2400/12—Portable refrigerators

Definitions

• the invention relates to a portable temperature control.
• DE 200 13 775 Ul describes a cooling container with a universal exchange module for cooling, which is formed for example by a thermoelectric converter device and can be attached to different devices.
• a portable cooling unit is known, on the outside of which solar cells can be attached, with which a cooling unit is supplied with energy.
• a cool box which is divided by a vertical partition into two chambers, wherein in the bottom region of a chamber an ice container is provided, the cooling capacity, since it is located on the ground, only with low efficiency in the rest Volume of the cooler is transmitted.
• the dividing wall is provided with openings whose cross-section, relative to the area of the dividing wall, is smaller in the lower area than in the upper area.
• the two separated by the intermediate wall chambers have different Temper atur notion, wherein the temperature of the chamber, in the bottom region of the ice container is arranged, is lower than the temperature in the other chamber.
• a tempering which has an outer space and an inner space, which are held at different temperatures and separated by insulating material.
• a heat exchanger is provided in a lid of the container.
• another tempering such as dry ice, arranged in the inner space.
• a fan is provided, with which an air flow is driven through the heat exchanger, which flows through the rooms.
• a refrigerator which has a storage space which is stable at variable temperatures in its inner cooling chamber.
• a variable temperature boiler room On one side of the storage room, a variable temperature boiler room is formed.
• cooling air in a freezing chamber flows through the variable temperature storage space in a rear path.
• the amount of cooling air of this path is adjustable.
• heated air from the heater flows through the variable temperature storage room and then back into the boiler room.
• the invention has for its object to provide a portable temperature control, which has at least two chambers in which Temperiergut can be tempered with high efficiency and in a wide power range.
• the tempering according to the invention contains two, separated by a partition from each other chambers above which the tempering is.
• at least one flow-through opening is provided in the dividing wall near the top wall and near the bottom wall. These flow-through openings become effective only if different temperatures prevail between the two chambers, for example as a result of different temperature-controlled material.
• the additionally provided fan achieves a constant circulating flow between the chambers, which runs along the tempering body in its upper region, so that the tempering efficiency is increased overall.
• FIG. 1 shows a schematic section through a tempering container according to the invention, cut in the plane II of FIG. 2,
• Figure 2 is a sectional view of the container of Figure 1, taken in the plane II-II of Figure 1,
• Figure 3 shows a matching circuit for improving a to a thermoelectric
• FIG. 5 shows a circuit according to FIG. 3 supplemented by a switching device.
• a temperature control container has a bottom wall 6, side walls 8 and a top wall 10.
• the interior of the container is divided by a partition wall 12 into chambers 14 and 16.
• the top wall 10 is sandwiched between a heat exchanger body 18 and a tempering 20, which are in intimate contact with a preferably designed as a Peltier element 22 thermoelectric converter whose power supply is not shown in Figure 1.
• a fan 24 is provided for an intensive heat exchange between the ambient air and the surface of the heat exchanger body 18.
• the components 18, 20, 22 and 24 form a per se known tempering device, depending on the polarity of the connection of the Peltier element 22 to a power source, the temperature control body 20 cools or heats.
• At least one throughflow opening 26 is provided in the lower region of the partition wall 12 and at least one further throughflow opening in the upper region 28 provided.
• a fan 30 is arranged, which drives an air flow through the flow opening 26 therethrough.
• a circulating through the chambers 14 and 16 air flow is formed, which ensures that the temperature of the material to be tempered to the temperature of the tempering body s 20 equalizes.
• the fan 30 may be disposed in the upper flow opening 28.
• a conventional axial fan can be used, which builds flat.
• the upper throughflow opening 28 is advantageously located within a recess of the tempering 20, in order to intensify the heat exchange.
• the entire container housing is advantageously formed in two parts, wherein the front in the figures front side wall for loading and unloading of the interior is removable (parting line 32) and the remaining part of the container walls advantageously integrally formed including the partition wall 12, for example is poured.
• the assembly can be made such that the Peltier element 22 is inserted into the top wall 10, then the provided with corresponding recesses for the partition wall 12 tempering 20 is used, the heat exchanger body 18 is placed and the fan 24 is placed, the parts, for example by means of continuous Bolt under pressure of the body 18 and 20 are secured against the top wall 10.
• the fan 30 is inserted into the flow-through opening 26, wherein the electrical connection is laid in the partition wall 12 and is connected to the not shown electrical connection of the Peltier element 22 and the fan 24.
• the dividing line 32 may, for example, meander.
• the connection between the front wall 34 and the remainder of the container may be made by any suitable means, such as a drawstring, Velcro, etc.
• the wall material is advantageously foamed plastic, the surface of which is closed pore-porous or additionally laminated with a film. It is understood that other temperature-insulating wall structures are possible.
• the container may be provided with a handle and / or straps, not shown.
• the chambers 14 and 16 can be filled with molded parts 36 which are shaped as required, advantageously deformable and made of foam, which hold the temperature-controlled material in a shock-proof manner and additionally effect that inside the chambers no unnecessarily large volume of air is present, especially outside of the circulation flow for which a path is kept free.
• the one or more moldings are advantageously compressed elastically by the material to be tempered.
• Peltier element 22 and the fan 24 and 30 are advantageously used in its construction known per se solar module 40 (see block diagram Fig. 3), which may be attachable to the container may be present separately from the container or integrated into the container ,
• a matching circuit 42 which includes a known MPP controller 44, a DC / DC converter 46, a switch operating circuit 48 and a switch 50. Connection points between the Peltier element 22, the matching circuit 42 and the solar module 40 are denoted by 52.
• the function of the matching circuit 42 is as follows:
• the switch 50 While the solar radiation to the solar module 40 is well below the nominal radiation, ie, the output power of the Peltier element 22, for example, in the range between 20 and 80% of its rated power, the switch 50 is open, so that the output voltage of the Peltier element 22 under control of the MPP controller over the DC / DC converter 46 is adjusted. When the output power of the solar module 40 exceeds 80% of its rated power, the switch operation circuit 48 closes the switch 50 so that the Peltier element 22 is directly coupled to the solar module 40.
• Figure 4 illustrates the function schematically. The abscissa shows the solar radiation in the range between a minimum irradiation P MIN and a maximum irradiation P MAX .
• P MIN may be 5-20 % of P MAX .
• P MAX may correspond to the maximum terrestrial irradiance of 1000W / m 2 .
• the ordinate indicates voltages or power.
• the dashed curve a indicates the output power of the transducer 46 over the solar radiation.
• the double-dotted curve b indicates the output voltage of the converter 46, the single-dotted curve c indicates the voltage of the solar module 40.
• the switch 50 is switched on from point H, when the solar radiation reaches about 80% of the maximum power or the output of the solar module about 80% of the rated power, so that the lying on the Peltier element 22 voltage b directly the output voltage of the solar module c is.
• the matching circuit 42 may be integrated in the top wall 10 or the heat exchanger body 18, so that the solar module only needs to be connected to designated ports. It is understood that further connections can be provided, to which an external battery or an external other voltage source can be connected. Next, the container may have batteries that are additionally charged in sunlight and their energy is available in sunshine-free time for operating the container. With the aid of an additional electronics unit, small electronic consumers such as mobile phones, organizers, GPS devices etc. can be supplied with energy from the solar module.
• FIG. 5 shows a circuit with which the above-described problem is reduced:
• connection point 52 of the matching circuit 42 is not connected directly to the solar module 40, but via two switches S 1 and S 2, which belong to a switching device 54, that of the MPP controller or any other, of the output power of the solar module 40 dependent unit is controlled. Further, connection points 56 are shown, via which the fan 24 and preferably additionally the fan 30 not shown in FIG. 5 are connected.
• the switch Sl represents a circuit breaker which connects the connection points 52 and 56 in the closed state.
• the switch S2 represents a changeover switch which connects the solar module 40 optionally to the connection point 56 or the connection point 52.
• the function of the switching device 54 with the switches Sl and S2 is the following:
• the disconnecting switch Sl is opened and the changeover switch S2 is operated alternately.
• the respective periods of time are adapted to the performance of the Peltier element 22 and the geometry of the heat exchanger body 18 and the tempering 20 and the performance of the fan 24 in particular. While the Peltier element is supplied with power and, for example, cools the temperature control body 20 and heats the heat exchanger body 18, the surface temperatures of the heat exchanger body 18 and the temperature control body 20 change.
• the solar module delivers about 5 watts at full power, of which about 1.5 watts are consumed for the fans, so that for the Peltier element 3.5 watts are available.
• the fans which can be additionally regulated, require about 1.0 watts, leaving only 1.5 watts for the Peltier element. Below 1.5 watts, the cooling performance of the Peltier element decreases sharply, so it is advantageous to go to the interval mode, the overall brings the greater efficiency advantages, the lower the solar radiation or the output of the solar module.
• the circuit according to FIG. 5 can be modified in many ways.
• the switches Sl and S2 can be designed as semiconductor elements.
• the interval circuit 54 can also be used without the matching circuit 42 and also brings advantages to other tempering containers which are supplied with energy by means of one or more solar modules or other energy sources and have a thermoelectric converter, in particular a Peltier element, as well as fans.
• the container can be modified in many ways. For example, it can be composed of several individual components.
• the partition wall can be an insertion part or otherwise removable, so that larger tempering or refrigerated goods can be accommodated.
• the lid may be removable together with the tempering device.
• Several chambers can be provided.
• the matching circuit may be part of the solar module, etc.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36822289

Family Applications (1)

Country Status (4)

Families Citing this family (32)

Citations (1)

Family Cites Families (15)

• 2005
  • 2005-05-03 DE DE102005020937A patent/DE102005020937B4/de not_active Expired - Fee Related
• 2006
  • 2006-04-28 WO PCT/EP2006/003985 patent/WO2006117149A1/de not_active Application Discontinuation
  • 2006-04-28 CN CN2006800149838A patent/CN101317048B/zh not_active Expired - Fee Related
  • 2006-04-28 EP EP06742737A patent/EP1794511A1/de not_active Withdrawn

Patent Citations (1)

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