EP0789206A2 - Appareil frigorifique - Google Patents

Appareil frigorifique Download PDF

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Publication number
EP0789206A2
EP0789206A2 EP96112097A EP96112097A EP0789206A2 EP 0789206 A2 EP0789206 A2 EP 0789206A2 EP 96112097 A EP96112097 A EP 96112097A EP 96112097 A EP96112097 A EP 96112097A EP 0789206 A2 EP0789206 A2 EP 0789206A2
Authority
EP
European Patent Office
Prior art keywords
freezer
evaporator
freezer compartment
connecting line
refrigerant
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.)
Granted
Application number
EP96112097A
Other languages
German (de)
English (en)
Other versions
EP0789206B1 (fr
EP0789206A3 (fr
Inventor
Roland Dipl.-Ing. Maier (Fh)
Walter Dipl.-Ing. Holz
Hans Christian Mack
Wolfgang Dipl.-Ing. Becker
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
Bosch Siemens Hausgerate 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 Bosch Siemens Hausgerate GmbH filed Critical Bosch Siemens Hausgerate GmbH
Priority to SI9630656T priority Critical patent/SI0789206T1/xx
Publication of EP0789206A2 publication Critical patent/EP0789206A2/fr
Publication of EP0789206A3 publication Critical patent/EP0789206A3/fr
Application granted granted Critical
Publication of EP0789206B1 publication Critical patent/EP0789206B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves
    • 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
    • F25D2400/04—Refrigerators with a horizontal mullion
    • 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
    • F25D2400/30—Quick freezing

Definitions

  • the invention relates to a refrigerator with at least two thermally separated freezer compartments arranged within its housing, each of which is cooled by an evaporator, which are fluidically connected to one another via a connecting line and which can be acted upon with refrigerant via a control device.
  • the invention has for its object to design a freezer according to the preamble of claim 1 such that the freezing speed for frozen goods is increased significantly in a simple manner.
  • the freezer compartments are equipped with different useful contents, the evaporator serving to cool the freezer compartment with the larger useful contents being able to be coupled out of the refrigerant flow by a shut-off device arranged in the connecting line and serving as a reservoir for liquid refrigerant.
  • the solution according to the invention makes it possible in a simple manner to operate the evaporator used to cool the freezer compartment with the lower useful content with the compressor designed for both evaporators, as a result of which the compressor, which is oversized for this evaporator, increases the evaporating pressure and thus the evaporating temperature the evaporator used to cool the freezer compartment with the lower useful content drops significantly. This significantly increases the cooling capacity of this evaporator, which means that freshly inserted frozen food can freeze through much more quickly. Furthermore, for the freezer compartment with the lower useful content, the same heat insulation of this compartment results in less heat, which also lowers the evaporation temperature and thus increases the cooling capacity of the evaporator.
  • the cooling capacity for the entire freezer is designed so that the most economical energy consumption is achieved for the entire device.
  • the compressor is selected so that it works with a favorable efficiency under the conditions specified by standard regulations.
  • the amount of refrigerant is also matched to optimal energy consumption.
  • the two freezer compartments of the freezer can be operated side by side at the same time.
  • the refrigerant can prevent the compressor from sucking in liquid refrigerant and thus taking damage.
  • a shut-off device is particularly expedient and can be activated in a time-optimized manner if, according to an advantageous embodiment of the object of the invention, it is provided that an electrically controllable shut-off valve serves as the shut-off device.
  • the shut-off valve in the connecting line is essentially at the same time as the control means when the evaporator in the freezer compartment has a lower useful content, it switches from its pass mode to its blocking mode.
  • the connecting line is connected to the evaporator serving to cool the freezer compartment with a lower useful content at least 50% of its refrigeration-effective evaporator surface.
  • the coupling of the connecting line to the evaporator serving to cool the freezer compartment has a smaller useful content is arranged on the inlet-side section of its evaporator surface.
  • the evaporator system can be constructed particularly inexpensively in terms of production technology if, according to a next advantageous embodiment of the subject of the invention, it is provided that the evaporator serving to cool the freezer compartments is preceded in the flow direction of the refrigerant driven by the compressor, with a throttle device serving to reduce the pressure thereof, which is essentially a have identical flow volume per unit of time.
  • the evaporator serving to cool the freezer compartment has a particularly high cooling capacity if, according to a further advantageous embodiment of the subject of the invention, it is provided that the coupling of the connecting line to the evaporator serving to cool the freezer compartment has a greater useful capacity on the outlet side Section of an evaporator surface is arranged.
  • both freezer compartments of the freezer can be operated in a particularly simple manner with little effort from the control of the refrigerant if, according to a further preferred embodiment of the subject matter of the invention, it is provided that the evaporator serving to cool the freezer compartment has a larger useful content when activated by the Control means upstream of the other evaporator and connected to it in terms of flow technology via the connecting line.
  • the evaporators for cooling the freezer compartments are designed as wire tube evaporators with evaporator shelves arranged at different heights.
  • the evaporators used to cool the freezer compartments can be formed in a particularly space-saving manner if, according to an alternative embodiment of the object of the invention, it is provided that the evaporators for cooling the freezer compartments are designed as evaporator boards.
  • the freezer compartment with the lower useful content is arranged in the housing of the freezer above the freezer compartment with the larger useful content.
  • a solution according to these features has the advantage that, in addition to facilitating loading of the freezer compartment which serves to freeze the frozen goods more quickly, a significantly more favorable access option is provided for checking the freezer condition of the frozen goods.
  • FIG. 1 shows a purely schematically illustrated household freezer 10, in the heat-insulating housing 11 of which two freezer compartments 12 and 13 arranged one above the other are provided. These are thermally separated from one another by a heat-insulating intermediate floor 14 and have a useful content of different sizes, the freezer compartment 12 having the lower useful content being arranged on top.
  • the household freezer 10 is equipped with a refrigeration system 15, which has a refrigerant compressor 16 designed for simultaneous cooling of the two freezer compartments 12 and 13.
  • a condenser 17 is connected on the pressure side to the refrigerant compressor 16 and is connected on the output side to an electrically controllable 3/2-way solenoid valve 18 which serves as control means.
  • the solenoid valve 18, which is controlled by an electronic evaluation circuit depending on the temperature prevailing in the freezer compartment 13 and can be brought into two different working positions I and II, has at its two outputs a throttle tube 19 and 20 serving to reduce the pressure of the liquid refrigerant flowing from the condenser 17 which are spiral-shaped and which have an identical flow resistance for liquid refrigerant.
  • the throttle tube 19 is provided on the inlet side of an evaporator 21, which is designed as an evaporator board and is arranged in the freezer compartment 12, the refrigerant channel arrangement 22 of which is formed in turns on the evaporator board.
  • the evaporator 21 is connected on the outlet side to the suction side of the refrigerant compressor 16 and, on its inlet side facing the throttle tube 19, has a connection point 23 arranged close to its refrigerant injection point (not shown). This serves for the fluidic connection of the refrigerant channel arrangement 22 of the evaporator 21 to a connecting line 24, the flow cross section of which can be shut off by a shut-off device designed as an electrically controllable shut-off valve 25 is.
  • the evaporator 21 is connected in terms of flow technology via the connecting line 24 to an evaporator 26 which is arranged in the freezer compartment 13 and is also formed in the manner of a board.
  • a connection point 28 is provided at the outlet-side end of its refrigerant channel arrangement 27, while the inlet-side end of the refrigerant channel arrangement 27 is connected to the throttle tube 20.
  • FIGs 1 and 2 different operating states of the household freezer 10 and the refrigeration system 15 are shown by solid lines, the operating state shown in Fig. 1 showing the normal operation in which the solenoid valve 18 in its working position II and the shut-off valve 25 in its pass mode is operated so that the evaporator 26 in the freezer compartment 13 is connected in series to the evaporator 21 in the freezer compartment 12.
  • the refrigerant flow generated by the refrigerant compressor 16 is fed to the throttle tube 20 to lower its pressure to the evaporator-specific operating pressure of the evaporator 26, from where it flows over the injection point of the evaporator 26, not shown, in its refrigerant channel arrangement 27.
  • the refrigerant flow enters the connecting line 24 via the connection point 28 and becomes Via the connection point 23 of the refrigerant channel arrangement 22 of the evaporator 21, from where it is sucked in at the outlet side of the refrigerant channel arrangement 22 in the gaseous state from the suction side of the refrigerant compressor 16. Due to the working position II of the solenoid valve 18, both evaporators 21 and 26 are charged with liquid refrigerant, so that the freezer compartments 12 and 13 reach their intended operating temperature.
  • the liquid refrigerant is distributed approximately uniformly in the evaporator system, consisting of the evaporator 21 and the evaporator 26. If the solenoid valve 18 is now switched to its working position I by the manual actuation of an electrical switch (not shown) for the purpose of a quick freezing process in the freezer compartment 12, the shut-off valve 25 going into its blocking operation simultaneously with the switching process of the solenoid valve 18, that is in the evaporator 26 decoupled liquid refrigerant from the refrigerant circuit of the refrigerant compressor 16.
  • the refrigerant compressor 16 which is designed per se with regard to its delivery volume to supply both evaporators 21 and 26 with liquid refrigerant, is operated in a largely underfilled manner. This manifests itself in a sharp reduction in the evaporation pressure for the refrigerant and thus a substantial reduction in the evaporation temperature, which is additionally favorably influenced by the lower heat input due to the lower useful content of the freezer compartment 12.
  • the liquid refrigerant remaining in the refrigerant circuit is discharged from the refrigerant compressor 16 via the solenoid valve Working position I is supplied to the throttle tube 19, from where it is supplied to the refrigerant channel arrangement 22 of the evaporator 21 via the injection point (not shown) of the evaporator 21, which is only in the refrigeration circuit with the compressor 16, from where it is via the outlet side of the refrigerant channel arrangement 22 is fed to the suction side of the compressor 16.
  • the solenoid valve 18 is switched to its working position II by an electronic evaluation circuit (not shown) evaluating the temperature in the freezer compartment 13, as a result of which the evaporator 26 becomes Cooling of the freezer compartment 13 is coupled back into the refrigerant circuit.
  • the electronic evaluation circuit switches the two control means into their operating state which applies refrigerant to both the freezer compartments 12 and 13.
  • the evaporators 21 and 26 can also be designed as a wire tube evaporator with evaporator stages arranged at different heights.
  • a fan circulating the cooling air therein can additionally be provided in the freezer compartment 12, which results in more favorable heat transfer from the evaporator 21 to the frozen goods stored in the freezer compartment.

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)
EP96112097A 1995-09-21 1996-07-25 Appareil frigorifique Expired - Lifetime EP0789206B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630656T SI0789206T1 (en) 1995-09-21 1996-07-25 Refrigeration apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19535144 1995-09-21
DE19535144A DE19535144A1 (de) 1995-09-21 1995-09-21 Kältegerät

Publications (3)

Publication Number Publication Date
EP0789206A2 true EP0789206A2 (fr) 1997-08-13
EP0789206A3 EP0789206A3 (fr) 2000-05-31
EP0789206B1 EP0789206B1 (fr) 2003-10-01

Family

ID=7772803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112097A Expired - Lifetime EP0789206B1 (fr) 1995-09-21 1996-07-25 Appareil frigorifique

Country Status (5)

Country Link
EP (1) EP0789206B1 (fr)
DE (2) DE19535144A1 (fr)
ES (1) ES2208710T3 (fr)
SI (1) SI0789206T1 (fr)
TR (1) TR199600709A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002008676A1 (fr) * 2000-07-20 2002-01-31 BSH Bosch und Siemens Hausgeräte GmbH Appareil refrigerant
CN100347498C (zh) * 2001-09-13 2007-11-07 Bsh博施及西门子家用器具有限公司 具有两个蒸发器的制冷装置
CN100398948C (zh) * 1999-11-30 2008-07-02 Bsh博施及西门子家用器具有限公司 制冷机
RU2438075C2 (ru) * 2006-12-07 2011-12-27 Индезит Компани С.П.А. Холодильник
RU2447374C2 (ru) * 2006-12-22 2012-04-10 Бсх Бош Унд Сименс Хаусгерете Гмбх Холодильный аппарат
US8158770B2 (en) 2004-05-06 2012-04-17 University Of Rochester Content dependent inhibitors of cytidine deaminases and uses thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19756860A1 (de) * 1997-12-19 1999-06-24 Bosch Siemens Hausgeraete Kältegerät
DE102004014926A1 (de) 2004-03-26 2005-10-13 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit zwei Lagerfächern
EP1966549B1 (fr) * 2005-12-29 2017-07-19 Arçelik Anonim Sirketi Dispositif de refroidissement
DE102010001458A1 (de) * 2010-02-01 2011-08-04 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Kältegerät und Kältemaschine dafür
CN111854283B (zh) * 2020-07-22 2022-03-15 合肥华凌股份有限公司 制冷设备和制冷设备的控制方法
US12474091B2 (en) * 2023-07-26 2025-11-18 Whirlpool Corporation Vacuum insulated structure with a series evaporator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723128C (de) * 1941-08-31 1942-07-29 Lumophon Werke Bruckner & Star Kuehlanlage
GB647601A (en) * 1947-04-22 1950-12-20 British Thomson Houston Co Ltd Improvements in and relating to refrigerating systems
GB716651A (en) * 1951-04-28 1954-10-13 Gen Motors Corp Improved refrigeration apparatus
GB770272A (en) * 1952-02-20 1957-03-20 Gen Electric Improvements in and relating to refrigerating systems
JPS5915782A (ja) * 1982-07-19 1984-01-26 株式会社東芝 冷蔵庫の温度制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100398948C (zh) * 1999-11-30 2008-07-02 Bsh博施及西门子家用器具有限公司 制冷机
WO2002008676A1 (fr) * 2000-07-20 2002-01-31 BSH Bosch und Siemens Hausgeräte GmbH Appareil refrigerant
US6644044B2 (en) 2000-07-20 2003-11-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerator, marking system, and method for marking
CN100347498C (zh) * 2001-09-13 2007-11-07 Bsh博施及西门子家用器具有限公司 具有两个蒸发器的制冷装置
US8158770B2 (en) 2004-05-06 2012-04-17 University Of Rochester Content dependent inhibitors of cytidine deaminases and uses thereof
RU2438075C2 (ru) * 2006-12-07 2011-12-27 Индезит Компани С.П.А. Холодильник
RU2447374C2 (ru) * 2006-12-22 2012-04-10 Бсх Бош Унд Сименс Хаусгерете Гмбх Холодильный аппарат

Also Published As

Publication number Publication date
DE19535144A1 (de) 1997-03-27
DE59610749D1 (de) 2003-11-06
TR199600709A2 (tr) 1997-04-22
SI0789206T1 (en) 2004-02-29
EP0789206B1 (fr) 2003-10-01
ES2208710T3 (es) 2004-06-16
EP0789206A3 (fr) 2000-05-31

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