EP3227621A1 - Appareil de froid comprenant un circuit de chaleur - Google Patents

Appareil de froid comprenant un circuit de chaleur

Info

Publication number
EP3227621A1
EP3227621A1 EP15797097.1A EP15797097A EP3227621A1 EP 3227621 A1 EP3227621 A1 EP 3227621A1 EP 15797097 A EP15797097 A EP 15797097A EP 3227621 A1 EP3227621 A1 EP 3227621A1
Authority
EP
European Patent Office
Prior art keywords
heat
refrigerant
circuit
cycle
refrigerating appliance
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.)
Ceased
Application number
EP15797097.1A
Other languages
German (de)
English (en)
Inventor
Niels Liengaard
Matthias Mrzyglod
Andreas Vogl
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3227621A1 publication Critical patent/EP3227621A1/fr
Ceased 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F25B23/006—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect boiling cooling systems
    • 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
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface
    • 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
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the present invention relates to a refrigerator with a heat cycle.
  • the refrigerant in the refrigerant cycle is compressed by the refrigerant compressor, conveyed to the refrigerant condenser, then passed to the refrigerant evaporator and pumped from the refrigerant evaporator back to the refrigerant compressor.
  • the components mentioned are part of the closed refrigerant circuit, which is filled with refrigerant. Since the refrigerant evaporator and the refrigerant condenser make up a considerable volume of the refrigerant cycle, the volume of the refrigerant cycle is increased by said components, thereby increasing the amount of the refrigerant in the refrigerant cycle.
  • the object according to the invention is achieved by a refrigeration device with a refrigerant circuit, which comprises a heat exchanger, and with a heat circuit, wherein the heat exchanger is thermally coupled to the heat cycle by means of a coupling element, and wherein the coupling element with the heat cycle by means of a detachable connection mechanically connected is.
  • the technical advantage is achieved that an efficient heat transfer between the refrigeration cycle and the heat cycle is made possible by the use of the heat cycle, which is in thermal contact with the heat exchanger of the refrigerant circuit through the coupling element. Due to the thermal coupling of the heat exchanger with the heat cycle, the function of the heat exchanger, such as heat absorption or heat dissipation, at least partially be outsourced from the refrigeration cycle to the heat cycle. Thereby, the size of the refrigerant cycle and the amount of the refrigerant in the refrigerant cycle can be reduced. Due to the releasable mechanical connection between the coupling element and the heat cycle of the heat cycle can be separated as a replaceable module of the refrigerator with a small amount of work from the refrigeration cycle and replaced, for example.
  • the refrigerant compressor, the refrigerant evaporator and the refrigerant condenser are fixed components of the refrigerant cycle.
  • the refrigerant circuit has to be closed again and then the refrigerant has to be filled again into the refrigerant circuit.
  • the heat cycle is as a separate circuit physically separate from the refrigerant circuit, and can be replaced with little effort, without having to open the refrigerant circuit thereby. All that needs to be done is to release the releasable mechanical connection between the coupling element and the heating circuit in order to remove the heat cycle from the refrigerant circuit.
  • a uniform refrigerant circuit can be installed in all device variants.
  • different types of heat cycle can be made as separate modules and then easily installed in the various device variants of the refrigerator type.
  • the size of the refrigerant cycle and the amount of refrigerant in the refrigerant cycle can be reduced since the functions of components of the refrigerant cycle, such as the heat absorption of the refrigerant evaporator or the heat release of the refrigerant condenser, from the refrigerant circuit can be outsourced.
  • the heat cycle is a circuit physically separate from the refrigerant circuit and filled with a heat transfer substance different from the refrigerant, and thermally connected to the heat exchanger of the refrigerant cycle by the coupling member is coupled.
  • the heat cycle may be thermally coupled to the refrigerant condenser of the refrigerant circuit to receive and remove heat from the refrigerant condenser.
  • the heat cycle may be thermally coupled to the refrigerant evaporator of the refrigerant circuit to absorb heat and deliver the absorbed heat to the refrigerant evaporator.
  • a refrigeration appliance is understood in particular to mean a domestic refrigeration appliance, that is to say a refrigeration appliance that is used for household management or in the gastronomy sector, and in particular for storing food and / or drinks at specific temperatures, such as, for example, a refrigerator, a freezer, a refrigerated freezer combination, a freezer or a wine fridge.
  • the detachable connection comprises a frictional connection, in particular a screw connection, a plug connection or a positive connection, in particular a latching connection.
  • Frictional connections require a force on the surfaces to be joined together, whereby the mutual displacement of the joined surfaces is prevented, as long as caused by the static friction counterforce is not exceeded.
  • a preferred traction connection comprises a screw connection.
  • a screw has an external thread, wherein the external thread is screwed into an internal thread of a receiving element, or wherein the screw an internal thread when screwed into the receiving element itself feared to obtain a frictional connection.
  • a plug connection In a plug connection, a plug is inserted into a matching receiving element and a coupling between the plug and the receiving element is achieved, for example, in conjunction with an elastic sealant.
  • Form-fit connections are created by the interaction of at least two connection partners.
  • a preferred form-locking connection comprises a locking connection, as an interlocking holding device, in which, for example, a pin is inserted into a recess and fixed in the recess. Due to the aforementioned types of connections, an effective mechanical connection between the heat exchanger and the heat cycle can be realized by the coupling element, which in contrast to a cohesive connection, eg a welded joint, however, is solvable.
  • the releasable mechanical connection between the coupling element and the thermal circuit can be made by a force, for example, by inserting the pin of a locking connection in the corresponding recess, and the pin is fixed in the recess by a snap. Without a force directed in a specific direction, the mechanical connection will remain and ensure efficient thermal coupling between the refrigerant circuit and the heat circuit during operation of the refrigerator. However, the mechanical connection can be solved by a force directed in a specific direction. By loosening the detachable mechanical connection of the heat cycle, for example in case of a defect, be removed from the refrigerator and replaced.
  • the frictional connection, eg screw, the connector, and the positive connection, eg latching connection can be realized both on the side of the coupling element as well as on the side of the heat cycle.
  • the pin of a snap connection may be attached either to the coupling element or to the thermal circuit, and the corresponding receiving element may accordingly be mutually attached either to the heating circuit or to the coupling element in order to obtain an effective releasable mechanical connection.
  • said adhesion, plug-in, and form-fitting connections may also comprise combinations of the various connections.
  • the heat exchanger is a refrigerant evaporator or a refrigerant condenser.
  • a refrigerant evaporator or a refrigerant condenser receives heat in a refrigerant circuit during operation of the refrigerator, or gives off heat, and the heat between the refrigerant circuit and the heat cycle can be transmitted.
  • the refrigerant evaporator is a heat exchanger in which the liquid refrigerant is vaporized by absorbing heat from the thermal circuit in thermal contact with the heat exchanger.
  • the refrigerant condenser is a heat exchanger in which the vaporized refrigerant is liquefied by dissipating heat to the thermal circuit in thermal contact with the heat exchanger.
  • the heat exchanger is a refrigerant evaporator, wherein the heat circuit is designed to receive a quantity of heat from a cooling region of the refrigeration device and deliver it to the refrigerant evaporator.
  • the heat transport substance of the heat cycle absorbs the amount of heat in the cooling area, is thereby heated and can then release the absorbed heat quantity to the refrigerant evaporator of the refrigerant circuit. By delivering the amount of heat, there is a cooling of the heat transport substance in the heat cycle. The cooled heat transport substance is thus again available for receiving a quantity of heat from the cooling region of the heat cycle. Thus, an effective heat transfer from the cooling area of the refrigerator to the refrigerant evaporator is achieved.
  • the heat exchanger is a refrigerant condenser, which is designed to deliver a quantity of heat to the heat cycle, wherein the heat cycle is designed to deliver the absorbed amount of heat to the outside of the refrigerator.
  • the technical advantage is achieved that the heat released from the refrigerant condenser amount of heat can be dissipated by the heat cycle effectively to the outside of the refrigerator.
  • the heat transport substance of the heat cycle is heated by the absorption of the amount of heat from the refrigerant condenser. In a region of the heat cycle, preferably in the vicinity of the rear wall of the refrigeration device, the heated heat transport substance can deliver the amount of heat absorbed to the outer region of the refrigeration device.
  • the heat exchanger is a refrigerant evaporator
  • the refrigerant circuit comprises a further heat exchanger, which is a refrigerant condenser
  • the refrigeration device comprises a further heat cycle, wherein the heat cycle is formed, an amount of heat from a cooling region of the Receive refrigerant and deliver to the refrigerant evaporator to supply the amount of heat to the refrigerant circuit
  • the refrigerant condenser is adapted to deliver the refrigerant circuit supplied amount of heat to the other heat cycle, and wherein the further heat cycle is formed, the absorbed amount of heat to the outside of the refrigeration device.
  • a particularly effective refrigerant circuit can be provided by the thermal coupling of two heat exchangers of the refrigerant circuit with two heat circuits, which ensures effective cooling of the cooling area of the refrigerator.
  • the supply of the amount of heat from the cooling area of the refrigerator to the refrigerant evaporator is realized by the heat cycle, while the removal of the amount of heat from the refrigerant condenser is realized by the further heat cycle.
  • the functions of the refrigerant evaporator and the refrigerant condenser can be outsourced by the thermal coupling to the heat cycle, or to the further heat cycle, to the respective heat cycle.
  • This not only the Effectiveness of the refrigerant circuit can be increased, but it can also be the size of the refrigerant circuit can be reduced, whereby in particular the amount of refrigerant in the refrigerant circuit can be reduced.
  • the heat exchanger comprises an inner tube for conducting the refrigerant, wherein the inner tube has a porous or corrugated surface structure.
  • a porous surface structure can be realized by attaching a porous material to the surface of the inner tube.
  • a corrugated surface structure comprises a surface structure with ridges, e.g. Ribs, or with depressions, e.g. Gutters. Due to the porous or corrugated surface structure of the inner tube of the heat exchanger, the surface of the inner tube is increased.
  • the enlargement of the surface increases the efficiency of heat transfer between the refrigerant flowing through the inner tube and the heat cycle because the heat circuit can efficiently receive large amounts of heat from the heat exchanger or efficiently discharge it to the heat exchanger. For this reason, even a small length of the inner tube with a porous or corrugated surface structure is sufficient to ensure sufficient heat transfer between the heat exchanger and the heat cycle.
  • the heat exchanger is designed as a thermally conductive plate.
  • the technical advantage is achieved that by using a thermally conductive plate as a heat exchanger of the refrigerant cycle, the size of the refrigerant cycle can be reduced, and thereby less refrigerant is required in the refrigerant cycle. Due to the thermal coupling of the heat cycle with the heat exchanger of the refrigeration cycle, the function of the heat exchanger can be outsourced to the heat cycle.
  • the heat cycle may either remove heat from the refrigeration cycle, or may supply heat to the refrigerant cycle. If the heat exchanger is designed as a thermally conductive plate, the thermal coupling between the refrigerant circuit and the heat cycle is sufficient to ensure an efficient heat transfer between the two circuits.
  • the coupling element comprises a thermally conductive plate.
  • a thermally conductive plate as a coupling element ensures effective thermal coupling between the heat exchanger and the heat cycle, whereby an effective heat transfer between the heat exchanger and the heat cycle is ensured.
  • the coupling element is also mechanically connected by means of a detachable connection to the heat cycle.
  • a plate as a coupling element is therefore suitable for ensuring an effective mechanical connection between the coupling element and the thermal circuit, since, for example, a latching connection can be effectively attached to the plate.
  • the heat cycle comprises a thermosyphon, a ventilated thermosyphon or a heating tube, preferably a ventilated thermosyphon.
  • thermosyphon is a passive heat cycle that allows heat exchange by utilizing natural convection in a vertical, closed fluid circuit.
  • the thermosyphon contains a heat transport substance that is heated in the lower part of the thermosyphon, resulting in evaporation of the heat transport substance, causing it to rise in the vertical fluid circuit.
  • In the upper part of the thermosyphon there is a condensation of the heat transport substance and a heat release, whereby the heat transport substance in the vertical fluid circuit drops due to gravity.
  • thermosyphon contains a two-phase gas mixture having a constant pressure and a constant temperature, and is operated by a temperature difference in various outer portions of the thermosyphon.
  • a vented thermosyphon is particularly preferred because a ventilated thermosyphon, in addition to the heating loop, includes a fan configured to supply airflow to the thermosyphon heat cycle. By the supply of the air flow to a point of the heat cycle absorbed by the heat, or is released, an effective heat transfer can be achieved by the thermosyphon. As a result, in particular the effectiveness of the heat transport of the aerated thermosyphon can be increased.
  • a heating tube is also a passive heat circuit, which allows heat exchange by a heat transfer substance in a closed tube.
  • the operation of the heating tube is similar to the operation of the thermosyphon, except that the ends of the heating tube are not connected to each other and therefore no pipe circuit is present. Instead, the inner walls of the heating tube are provided with a coating which has a high capillary action. If the heat transport substance flows due to a temperature difference of regions outside the heating tube in a core region of the tube, then the heat transport substance may flow back due to the capillary action of the coating on the outside of the inner region of the tube.
  • the heat cycle contains a heat transport substance which comprises an alkane, a fluorohydrocarbon, an alcohol or water, preferably isobutane, an alcohol or water.
  • a heat transport substance which comprises an alkane, a fluorohydrocarbon, an alcohol or water, preferably isobutane, an alcohol or water.
  • Alcohol and water have proven to be particularly advantageous heat transfer substances that are suitable for use in a heat cycle, and also have a low harmfulness. Due to the In contrast to water, especially in a heat cycle where temperatures are close to 0 ° C, alcohol is suitable for low freezing points of alcohol, since water could freeze in such a low temperature heat cycle. On the other hand, water is useful as an advantageous heat transport substance at temperatures other than the freezing temperature of water.
  • the heat cycle comprises a valve, wherein the valve is designed to release the heat cycle in a first position, and to close the heat cycle in a second position.
  • the technical advantage is achieved that can be released or closed by the valve as needed, the heat cycle, whereby the heat cycle can be switched on or off, can be.
  • the cooling capacity of the refrigeration device can be efficiently controlled as a function of the required cooling by the regulation of the valve.
  • the refrigeration device comprises a temperature sensor for detecting a temperature value of a cooling region of the refrigeration device, and a valve control for controlling the valve, wherein the valve control is designed to control the valve in dependence on the detected temperature value.
  • the technical advantage is achieved that the cooling of the cooling region of the refrigeration appliance can be effectively controlled by the valve control as a function of the temperature value detected by the temperature sensor, depending on the required cooling capacity.
  • the valve control can open the valve in order to release the heat cycle and to achieve effective cooling of the cooling area.
  • the valve controller may close the valve to close the heat cycle, thereby preventing unnecessary cooling of the cooling area.
  • the cooling region has a cooling compartment, wherein the heating circuit is thermally coupled to the cooling compartment, wherein the temperature sensor is adapted to detect a temperature value in the cooling compartment, and wherein the valve control is formed that valve in dependence of the detected Temperature value to control.
  • the cooling region of a refrigeration device may comprise at least one refrigeration compartment, in particular one, two, three, four, five, six, seven, eight, nine or ten refrigerators. If the temperature sensor is designed such that it can detect temperature values in the various cooling compartments of the refrigeration device, the valve controller can determine whether the detected temperature value in the refrigerated compartment corresponds to the desired temperature value in the refrigerated compartment or if necessary must be adjusted. The fact that the heat cycle is thermally coupled to the cooling compartment, it is possible to achieve a targeted cooling of the various cooling compartments of the refrigerator by controlling the valve of the heat cycle.
  • the cooling compartment of the refrigeration device comprises a freezing chamber.
  • the technical advantage is achieved that a particularly effective cooling of the freezer of the refrigerator can be achieved by the thermal coupling of the heat cycle with the freezer of the refrigerator, in combination with the temperature detection by the temperature sensor and in combination with the valve control.
  • FIG. 1 shows a schematic representation of a refrigeration device
  • FIG. 2 is a schematic representation of a refrigerant circuit
  • FIG. and Fig. 3 is a schematic representation of a refrigerant circuit with a heat cycle and with another heat cycle in a refrigerator.
  • FIG. 1 shows a general refrigeration device 100, in particular a refrigerator, which can be closed by a refrigerator door 101 and has a frame 103.
  • the refrigerant circuit 105 includes a refrigerant evaporator 107, a refrigerant compressor 109, a refrigerant condenser 11, and a throttle body 13. After the expansion of the liquid refrigerant by absorbing heat from the medium to be cooled, e.g. of the air inside the refrigerator, the refrigerant evaporator 107 evaporates the refrigerant.
  • the refrigerant compressor 109 is a mechanically operated component that sucks refrigerant vapor from the refrigerant evaporator 107 and discharges at a higher pressure to the refrigerant condenser 1 1 1.
  • the throttle body 1 13 is a device for the continuous reduction of the pressure by cross-sectional constriction.
  • the refrigerant is a fluid used for heat transfer in the cryogenic system which absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and higher pressure of the fluid, usually including changes in state of the fluid.
  • Fig. 3 shows a schematic representation of a refrigerant circuit with a heat cycle and with another heat circuit in a refrigerator.
  • the refrigerant circuit 105 includes a refrigerant evaporator 107, a refrigerant compressor 109, a refrigerant condenser 1 1 1 and a throttle body 1 13, wherein the refrigerant evaporator 107 as a heat exchanger 1 15 and the refrigerant condenser 1 1 1 as a another heat exchanger 121 is formed.
  • the refrigeration appliance 100 comprises a heat cycle 1 17, which is physically separate from the refrigerant circuit 105 and may be designed as a thermosyphon, and is thermally coupled to the refrigerant evaporator 107, which is designed as a heat exchanger 15, by a coupling element 1 19 in order to absorb heat from the heat cycle 1 17 to be transferred to the refrigerant evaporator 107.
  • the refrigerant evaporator 107 or the coupling element 1 19 may be formed as a thermally conductive plate.
  • the coupling element 1 19 is mechanically connected to the heat circuit 1 17 by means of a detachable connection, wherein the releasable connection may comprise a frictional connection, in particular a screw, a plug connection or a positive connection, in particular a latching connection.
  • the heat cycle 1 17 is filled with a heat transport substance, in particular an alcohol, and is adapted to receive heat from a cooling region of the refrigeration device 100 in order to obtain a heated heat transport substance.
  • a heat transport substance in particular an alcohol
  • the heat transport substance is in the upper part of the heat cycle 1 17 in a gaseous state.
  • the heated heat transport substance can deliver the amount of heat absorbed to the refrigerant evaporator 107 of the refrigerant circuit 105 by means of the coupling element 19.
  • the heat transfer substance condenses and as liquid in the heat cycle 1 17 drops down. If the cooled liquid substance has reached the lower part of the heat cycle 1 17, it is again available for the absorption of heat.
  • an effective heat transfer in the heat cycle 1 17 can be made possible by the heat transport substance.
  • the amount of heat discharged to the refrigerant evaporator 107 is absorbed by the refrigerant in the refrigerant circuit 105.
  • the heated refrigerant is then compressed by the refrigerant compressor 109 in the refrigerant circuit 105 and forwarded to the refrigerant condenser 11 1 at a higher pressure.
  • the refrigerant condenser 1 1 1 is formed as a further heat exchanger 121 to dissipate the amount of heat from the refrigerant, whereby the Refrigerant is condensed in the refrigerant circuit 105.
  • the refrigerant condenser 1 1 1 may be formed as a thermally conductive plate.
  • the refrigerant condenser 1 1 1 is the amount of heat absorbed by the refrigerant via a further coupling element 125 to a further heat circuit 123 from.
  • the refrigerant condenser 1 1 1 is thermally coupled to the further heat cycle 123 by the further coupling element 125, wherein the further coupling element 125 is mechanically connected to the further heat circuit 123 by means of a detachable connection.
  • the further coupling element 125 may comprise a thermally conductive plate.
  • the further heating circuit 123 is based on a similar to the heat cycle 1 17 mode of operation.
  • the further heat cycle 123 is filled with a heat transport substance which is heated by heat absorption from the refrigerant condenser 1 1.
  • the heated heat transport substance rises in the further heat cycle 123 upwards.
  • the heated heat transport substance can deliver the amount of heat absorbed to the outer region of the refrigeration device 100.
  • Due to the heat release there is a cooling of the heat transport substance in the further heat cycle 123, whereby the heat transfer substance condenses and sinks down as liquid in the further heat cycle 123 to the lower area again for receiving a quantity of heat from the refrigerant condenser 1 1 1 to be available.
  • an effective heat transfer through the heat transfer substance can be made possible.
  • the heat exchanger 1 15, 121 may include an inner tube for conducting the refrigerant of the refrigerant circuit 105, wherein the inner tube has a porous or corrugated surface structure. Through the porous or ribbed Surface structure, the surface of the inner tube in the heat exchanger 1 15, 121 can be increased.
  • This measure increases on the side of the refrigerant circuit 105, the heat transferred between the heat exchanger 1 15, 121 and the heat cycle 1 17, 123 amount of heat. Since the heat cycle 1 17, 123, in particular designed as a thermosiphon that can absorb large amounts of heat, or leave, even a small length of the inner tube is sufficient to the necessary amount of heat between the heat exchanger 1 15, 121 and the heat cycle 1 17 123 transfer.
  • the heat cycle 1 17, 123 may include a vented thermosyphon, since a vented thermosyphon can transfer a greater amount of heat than a static thermosyphon.
  • a ventilated thermosyphon includes a fan that directs airflow to the thermosyphon, which effectively increases the heat input or heat output of the ventilated thermosyphon.
  • the heat cycle 1 17, 123 may include a valve through which the heat cycle 1 17, 123 on or off as needed by the flow of heat transfer substance is either released by the valve or interrupted.
  • the control of the valve can be done in dependence on the temperature requirements in the refrigeration device 100, and be performed for example in combination with temperature sensors.
  • the temperature sensors can detect the temperature in certain areas of the refrigeration device 100.
  • a controller can control the flow of the heat transfer substance in the heating circuit 1 17, 123 as a function of the detected temperature by releasing or closing the valve.
  • the heat cycle 1 17, 123 may be configured to absorb heat from a particular refrigeration compartment to be cooled, such as e.g. a freezing chamber to dissipate.
  • the present invention realizes a refrigerator 100 having a refrigerant circuit 105 having a reduced size and a small amount of refrigerant.
  • a releasable mechanical connection between the coupling element 1 19, 125 and the heat cycle 1 17, 123 is realized.
  • the heat cycle 1 17, 123 can be installed in a simple manner during assembly of the refrigeration device 100.
  • Simplification of the assembly of the refrigeration device 100 is achieved and the number of joints can be reduced.
  • a detachable connection is advantageous if prefabricated modules, such as prefabricated heat circuits 1 17, 123, are supplied to the production lines during assembly of the refrigeration device 100. Then, the various prefabricated heat circuits 1 17, 123 can be connected without soldering or welding together and technically sealed.
  • the refrigerant circuit 105 Due to the physical separation of the refrigerant circuit 105 from the heat cycle 1 17, 123, a modular delimitation of the functions of the refrigeration device 100 is possible. Thus, the refrigerant circuit 105 can be produced in large quantities and be installed firmly in various types of apparatus of the refrigerator 100. The various forms of the heat cycle 1 17, 123 can then be connected in a simple manner in the various types of equipment with the refrigerant circuit 105. In repair cases, the heat cycle 1 17, 123 can be exchanged with little effort.

Landscapes

  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne un appareil de froid (100), qui comprend un circuit de fluide frigorigène (105) doté d'un échangeur de chaleur (115, 121), ainsi qu'un circuit de chaleur (117, 123). L'échangeur de chaleur (115, 121) est couplé thermiquement au circuit de chaleur (117, 123) au moyen d'un élément de couplage (119, 125). L'élément de couplage (119, 125) est raccordé de manière mécanique au circuit de chaleur (117, 123) au moyen d'un raccord détachable.
EP15797097.1A 2014-12-02 2015-11-18 Appareil de froid comprenant un circuit de chaleur Ceased EP3227621A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014224669.5A DE102014224669A1 (de) 2014-12-02 2014-12-02 Kältegerät mit einem Wärmekreislauf
PCT/EP2015/077014 WO2016087210A1 (fr) 2014-12-02 2015-11-18 Appareil de froid comprenant un circuit de chaleur

Publications (1)

Publication Number Publication Date
EP3227621A1 true EP3227621A1 (fr) 2017-10-11

Family

ID=54557428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15797097.1A Ceased EP3227621A1 (fr) 2014-12-02 2015-11-18 Appareil de froid comprenant un circuit de chaleur

Country Status (5)

Country Link
US (1) US10495367B2 (fr)
EP (1) EP3227621A1 (fr)
CN (1) CN107003043B (fr)
DE (1) DE102014224669A1 (fr)
WO (1) WO2016087210A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10718558B2 (en) * 2017-12-11 2020-07-21 Global Cooling, Inc. Independent auxiliary thermosiphon for inexpensively extending active cooling to additional freezer interior walls

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO954600A (no) * 1995-11-14 1997-04-28 Kvaerner Asa Fremgangsmåte til kjøling av beholdere samt et kjølesystem for utførelse av fremgangsmåten
KR100377618B1 (ko) * 2000-06-09 2003-03-26 엘지전자 주식회사 상변화 물질을 이용한 냉장고
US6668570B2 (en) * 2001-05-31 2003-12-30 Kryotech, Inc. Apparatus and method for controlling the temperature of an electronic device under test
US8219569B2 (en) * 2003-08-25 2012-07-10 Oracle International Corporation In-place evolution of XML schemes
ATE410647T1 (de) * 2003-11-20 2008-10-15 Arcelik As Kühlvorrichtung
US8161760B2 (en) * 2006-12-28 2012-04-24 Whirlpool Corporation Utilities grid for distributed refrigeration system
EP2653386B1 (fr) * 2012-04-17 2014-12-10 Airbus Operations GmbH Dissipation de chaleur de l'électronique d'alimentation d'une unité de refroidissement
DE102012207683A1 (de) * 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit Wärmetauscher und Verdampfer am Gefrierfach

Also Published As

Publication number Publication date
CN107003043B (zh) 2020-09-15
US20170343266A1 (en) 2017-11-30
CN107003043A (zh) 2017-08-01
DE102014224669A1 (de) 2016-06-02
WO2016087210A1 (fr) 2016-06-09
US10495367B2 (en) 2019-12-03

Similar Documents

Publication Publication Date Title
EP2625478B1 (fr) Appareil frigorifique comprenant un accumulateur de froid
EP1416233B1 (fr) Refrigerateur à adsorption avec accumulateur de chaleur
DE102011007415A1 (de) Verdunstungsvorrichtung für ein Kältegerät
WO2015128164A1 (fr) Appareil de froid
DE69903657T2 (de) Den peltiereffekt verwendender haushaltkühlschrank mit wärmespeichern und thermosiphons mit verdampfung
EP3213012A1 (fr) Appareil de froid comportant un élément échangeur de chaleur
WO2012123268A2 (fr) Appareil de froid pourvu d'un accumulateur de chaleur
EP2697580B1 (fr) Dispositif évaporateur pour appareil frigorifique
DE202013101884U1 (de) Vorrichtung zum Aufnehmen und Verdampfen von kondensierten Flüssigkeiten an einer Kälteanlage und Kälteanlage mit dieser Vorrichtung
WO2016087210A1 (fr) Appareil de froid comprenant un circuit de chaleur
EP2064503A1 (fr) Appareil de réfrigération
WO2016173792A1 (fr) Appareil frigorifique muni d'un échangeur de chaleur
DE102014222113A1 (de) Kältegerät mit einem Wärmekreislaufsystem
EP3810999B1 (fr) Procédé de fonctionnement d'une pompe à chaleur et machine frigorifique
EP3260797A1 (fr) Système de conditionnement d'air d'une pièce et ensemble système
DE102004057432B4 (de) Kühlgerät
DE102023207543A1 (de) Wärmepumpe
WO2016074893A1 (fr) Appareil de réfrigération sans givre
DE102015207747A1 (de) Kältegerät mit einem Wärmetauscher
DE102023202884A1 (de) Wärmetauscher mit Abtauvorrichtung und Vorrichtung zum Temperieren
DE102015207842A1 (de) Kältegerät mit einem Heizabschnitt
WO2025252720A1 (fr) Système de régulation de température ayant un collecteur et une pompe dans le circuit secondaire, procédé de fonctionnement d'un système de régulation de température ou procédé de production d'un système de régulation de température
WO2025040492A1 (fr) Évaporateur doté d'un mécanisme de fermeture, dispositif de régulation de température et compartiment de refroidissement
DE1601010C3 (de) Kühlgerät, insbesondere Zweitemperaturen-Kühlschrank
DE102017128524A1 (de) Wärmepumpe

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170703

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210611

REG Reference to a national code

Ref country code: DE

Ref legal event code: R003

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20231028