EP2235449A1 - Appareil frigorifique - Google Patents

Appareil frigorifique

Info

Publication number
EP2235449A1
EP2235449A1 EP08865525A EP08865525A EP2235449A1 EP 2235449 A1 EP2235449 A1 EP 2235449A1 EP 08865525 A EP08865525 A EP 08865525A EP 08865525 A EP08865525 A EP 08865525A EP 2235449 A1 EP2235449 A1 EP 2235449A1
Authority
EP
European Patent Office
Prior art keywords
condenser
heat storage
storage mass
heat
channel
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.)
Withdrawn
Application number
EP08865525A
Other languages
German (de)
English (en)
Inventor
Detlef Cieslik
Niels Liengaard
Berthold Pflomm
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2235449A1 publication Critical patent/EP2235449A1/fr
Withdrawn legal-status Critical Current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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
    • 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
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F28F3/14—Elements constructed in the shape of a hollow panel, e.g. with channels by separating portions of a pair of joined sheets to form channels, e.g. by inflation
    • 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
    • F25B2339/042—Details of condensers of pcm 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a refrigerator according to the preamble of claim 1.
  • a cooling circuit in which a refrigerant circulates.
  • the refrigeration cycle includes a compressor, a condenser, an expansion nozzle and an evaporator.
  • the compressor and the condenser are provided on the outside of the refrigerator, since heat is radiated from both components.
  • the evaporator is on the other hand in the interior.
  • the refrigerant which has been expanded by the expansion nozzle, passes into the gaseous state and cools down considerably. It can now absorb heat from the interior via the evaporator.
  • the compressor the refrigerant is compressed on the outside of the refrigerator and thereby heated.
  • the condenser the pressurized refrigerant reverts to the liquid state and releases heat.
  • the condenser It is the task of the condenser to extract the heat energy from the refrigerant and to deliver it to the environment. In order to ensure the necessary heat exchange, the condenser must have a certain size, which is particularly at built-in appliances at the expense of the size of the cooled interior.
  • the condenser must always be designed in such a way that the amount of heat generated during the operating time of the compressor can also be dissipated during the operating time of the compressor. During the rest periods of the compressor practically no heat is generated. In these times, therefore, no heat transfer from the condenser to the ambient air is necessary. The condenser must therefore be designed so that the heat to be dissipated is released only at the times in the ambient air in which the compressor is operated.
  • the invention has for its object to provide a refrigerator with a condenser and / or an evaporator, exchanged very quickly and effectively with the heat energy between the refrigerant and a heat storage mass and discharged as effectively from the heat storage mass to the environment or taken from the interior can. Furthermore, the condenser and / or evaporator should be inexpensive to manufacture.
  • the condenser and / or evaporator has at least one channel for the refrigerant and at least one adapted to the structure of the channel cavity for a heat storage mass can within the Plate condenser and / or evaporator made a rapid and effective heat transfer between the refrigerant and the heat storage mass.
  • the heat exchange can take place over a large area, since both the channel for the refrigerant and the cavity for the heat storage mass have a very favorable ratio between outer surface and volume.
  • the channel is meandering, wherein the cavity is adapted to the course of the channel, that the cavity at least in some of the meander arrangement of the channel forms meandering gaps, but is spatially separated from the channel. Due to the spatial separation of channel and cavity heat exchange between the two takes place only by the heat conduction properties of the evaporator or condenser material.
  • Compressor more heat can be removed from the coolant, as is discharged from the condenser to the ambient air. This heat is temporarily stored in the heat storage mass. In the times in which the compressor is not working and normally no heat is released from the condenser to the ambient air, the heat previously absorbed by the heat storage mass is now released again. This heat is released by the condenser over a much longer period of time.
  • the condenser can therefore be designed smaller and the existing space can be better used.
  • the cavity for the heat storage mass has at least one closable opening. Through this opening, the heat storage mass in the
  • Production facility are filled.
  • the condenser and / or evaporator is produced by a bonding process.
  • a bonding process ensures low production costs.
  • the plate condenser and / or compressor can be produced in Z-bonding technology.
  • the condenser and / or evaporator is manufactured in roll bonding technology.
  • the structure for the at least one channel for the refrigerant and the structure for the cavity for receiving the heat storage mass is applied to a metal plate with a release agent.
  • the structure of the cavity is adapted to the structure of the channel for the refrigerant so that the smallest possible distances between the channel and the cavity for the heat storage mass exist.
  • the thus prepared sheet metal plate is now connected in a rolling mill at high temperature and under high pressure with a second sheet metal plate. In the places where the release agent has been applied, no connection is made.
  • the sheet metal plates disengage at the non-communicating locations and the channel for the refrigerant and the cavity for the heat storage mass can form and take on their final shape.
  • the condenser and / or evaporator according to the invention consists of aluminum. This material conducts heat particularly well, so that the heat quickly removed from the refrigerant and the heat can be quickly removed from the heat storage mass or the heat storage mass and transferred to the refrigerant. Also, aluminum can be processed excellently with the roll bonding technique.
  • the heat storage mass contains a eutectic material.
  • This material can be used as a latent heat storage and therefore has a very high heat capacity.
  • a low cost eutectic material that can be used here is paraffin.
  • water is used as the heat storage mass. Also, water has a high heat storage capacity and has the additional advantage of causing virtually no cost. Water is therefore ideally suited for use as a heat storage mass.
  • the heat storage mass is filled in the liquid state through the closable opening in the space provided for this purpose.
  • the heat storage mass during the filling process should have a temperature which is above the temperature which is at most reached during operation of the refrigeration appliance. In this way, no problems with the thermal expansion of the heat storage mass can result after closing the openings.
  • Fig. 1 is a schematic representation of the cooling circuit of an inventive
  • FIG. 2 shows the view of the plate condenser of the refrigerator from FIG. 1.
  • the invention is explained here by way of example with reference to a refrigerator with a condenser of corresponding design. However, it can also be used on all other refrigeration appliances such. B. Freezers, freezers or combination appliances realize. Furthermore, the invention is not limited to a refrigerator with a condenser constructed in this way, but also applies to refrigerators with a correspondingly constructed evaporator.
  • FIG. 1 the cooling circuit of a refrigerator 1 is shown schematically.
  • the cooling circuit has a compressor 2 and a condenser 3, both outside a cooled interior 6 of the refrigerator 1 are mounted. Furthermore, an expansion nozzle 4 is provided at the boundary to the cooled interior 6. An evaporator 5 is arranged inside the cooled interior 6.
  • the refrigeration cycle is a closed circuit filled with refrigerant.
  • the gaseous refrigerant is compressed and heated by the compression process.
  • the condenser 3 the gaseous refrigerant heat is removed and released into the ambient air, thereby liquefying the refrigerant.
  • the evaporator 5 upstream expansion nozzle 4 the refrigerant expands when passing in low pressure region of the cooling circuit. During this transfer, the refrigerant changes its state of aggregation from liquid to gaseous and cools down considerably. About the evaporator 5, the refrigerant now withdraws the interior 6 heat and thereby assumes a higher temperature.
  • the further gaseous refrigerant is then compressed again and brought to a temperature which is higher than the ambient temperature, so that the heat absorbed in the interior 6 through the condenser 3 can be discharged to the ambient air.
  • the size of the heat removal by the evaporator 5 is determined by a controller, not shown here, which controls the duty cycle and the switch-on of the compressor 2.
  • a condenser 3 is shown, which is a particularly effective
  • This condenser is constructed from two sheet metal plates 7 and is manufactured in roll bonding technology. This results in a channel 8 for the refrigerant, which extends in successive channel loops 9 over a large part of the surface of the condenser 3.
  • a line to the compressor 2 connected to the drain 10, a line which supplies the pressurized liquid refrigerant via the expansion nozzle 4 to the evaporator 5.
  • a cavity 12 is arranged for a heat storage mass. Finger-shaped extensions 13 of the cavity 12 extend between channel loops 9 and thus allow the heat storage mass as close as possible to the To introduce refrigerant in the channel 8.
  • the cavity 12 has a filling opening 14, through which the heat storage mass can be filled into the cavity 12. After the filling process, the filling opening 14 is closed.
  • a further cavity for receiving heat storage mass is provided to the right of the channel loops 9. Finger-shaped extensions also extend from the cavity between the channel loops 9. Of course, this cavity also has a closable filling opening for the heat storage mass.
  • the condenser is advantageously made of aluminum.
  • two aluminum plates are rolled together, with the plates joining together at high pressure and temperature.
  • the structure of the channel 8 with the channel loops 9 and the cavity 12 with its finger-shaped projections 13 is applied to one of the plates by means of a release agent.
  • no connection of the two plates takes place. Therefore, these areas can be released from each other after the rolling process by blowing high-pressure gas from each other. In this way, the cavities forming the channel 8 for the refrigerant and the cavity 12 for the heat storage mass.
  • the condenser 3 is dimensioned so that during the running times of the compressor 2 the refrigerant withdrawn so much heat and to the ambient air and to the Heat storage mass can be transmitted, that the refrigerant at the outlet 10 of the condenser 3 is not much warmer than the temperature of the ambient air.
  • the heat storage mass By using the heat storage mass, it is possible to temporarily store the heat generated by the compressor 2 and to deliver this heat even in the downtime of the compressor 2 to the ambient air. In this way, a heat release not only during the life of the compressor 2 instead of the heat dissipation can take place continuously.
  • the heat storage mass should have a high heat capacity, so that the refrigerant heat energy can be withdrawn quickly.
  • the heat storage mass must not cause high costs, so that the manufacturing costs of the condenser compared to a conventional condenser are not raised too much.
  • Water has therefore proven to be the ideal heat storage material. Water meets all requirements in an outstanding way, because it has a high heat capacity and at the same time only causes very low costs. Also, the filling process in the cavity 12 can be done in a simple manner, since water is always liquid in the normally prevailing conditions.

Landscapes

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

Abstract

L'invention concerne un appareil frigorifique (1) comprenant un compartiment intérieur réfrigéré (6) et un circuit de refroidissement destiné à un fluide frigorigène. Le circuit de refroidissement comprend un évaporateur (5) sous forme de plaque, situé dans le compartiment intérieur réfrigéré (6), ainsi qu'un compresseur (2) destiné au fluide frigorigène et qu'un condenseur (3) sous forme de plaque, situé du côté extérieur de l'appareil frigorifique (1). Le condenseur (3) et/ou l'évaporateur (5) est/sont doté(s) d'au moins un conduit (8,9) destiné au fluide frigorigène et d'au moins une cavité (12, 13) destinée à une matière d'accumulation de chaleur, la cavité (12, 13) étant adaptée à la structure du conduit (8,9).
EP08865525A 2007-12-21 2008-12-10 Appareil frigorifique Withdrawn EP2235449A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062022A DE102007062022A1 (de) 2007-12-21 2007-12-21 Kältegerät
PCT/EP2008/067202 WO2009080517A1 (fr) 2007-12-21 2008-12-10 Appareil frigorifique

Publications (1)

Publication Number Publication Date
EP2235449A1 true EP2235449A1 (fr) 2010-10-06

Family

ID=40470074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08865525A Withdrawn EP2235449A1 (fr) 2007-12-21 2008-12-10 Appareil frigorifique

Country Status (5)

Country Link
EP (1) EP2235449A1 (fr)
CN (1) CN101903713A (fr)
DE (1) DE102007062022A1 (fr)
RU (1) RU2010128081A (fr)
WO (1) WO2009080517A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054416A1 (de) * 2008-12-09 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
DE102012106075B4 (de) 2012-07-06 2022-06-30 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Überladeschutz für einen Wärmespeicher
DE102012017345A1 (de) * 2012-08-29 2014-05-15 Johannes Georg Mehlig Haushalts-Kühlschrank oder -Gefrierschrank
DE102013223737A1 (de) * 2013-11-20 2015-05-21 BSH Hausgeräte GmbH Einkreis-Kältegerät
CN105823150B (zh) * 2015-01-05 2018-08-03 中国科学院宁波材料技术与工程研究所 冷却装置及空调冰箱一体机
DE102017000237A1 (de) 2016-03-16 2017-09-21 Liebherr-Hausgeräte Lienz Gmbh Kältemittelkreislauf für ein Kühl- und/oder Gefriergerät
FR3052246B1 (fr) * 2016-06-06 2019-05-10 Valeo Systemes Thermiques Echangeur thermique comportant des moyens d’amortissement de variations de temperatures
EP3327398A1 (fr) 2016-11-23 2018-05-30 Siemens Aktiengesellschaft Système d'échange de chaleur comportant un dispositif de refroidissement et procédé d'échange de chaleur utilisant le système d'échange de chaleur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502473A (nl) * 1985-09-10 1987-04-01 Jacobus Maria Joannus Kochx Koelkast met gebruikmaking van een eutectische plaat, een condensor met ingebouwde afsmeltelementen, een thermostaatklok die ervoor zorgt dat de compressor slechts enkele malen per etmaal aanslaat.
US5239839A (en) * 1991-06-17 1993-08-31 James Timothy W Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media
EP0794396A1 (fr) 1996-03-08 1997-09-10 Société d'Electromenager du Nord Selnor Un appareil à génération de froid comportant un échangeur de chaleur à accumulation
DE29605781U1 (de) * 1996-03-28 1997-07-24 AEG Hausgeräte GmbH, 90429 Nürnberg Kühl- und/oder Gefriergerät
DE10126818A1 (de) * 2001-06-01 2002-12-05 Bsh Bosch Siemens Hausgeraete kältegerät und Verdampfer dafür
ES2761649T3 (es) 2005-05-11 2020-05-20 Liebherr Hausgeraete Ochsenhausen Gmbh Aparato de refrigeración y/o congelación

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009080517A1 *

Also Published As

Publication number Publication date
WO2009080517A1 (fr) 2009-07-02
RU2010128081A (ru) 2012-01-27
CN101903713A (zh) 2010-12-01
DE102007062022A1 (de) 2009-06-25

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