EP0703422A2 - Appareil de congélation - Google Patents

Appareil de congélation Download PDF

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Publication number
EP0703422A2
EP0703422A2 EP95114898A EP95114898A EP0703422A2 EP 0703422 A2 EP0703422 A2 EP 0703422A2 EP 95114898 A EP95114898 A EP 95114898A EP 95114898 A EP95114898 A EP 95114898A EP 0703422 A2 EP0703422 A2 EP 0703422A2
Authority
EP
European Patent Office
Prior art keywords
freezer
refrigerant
reservoir
evaporator
circuit
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Withdrawn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
EP95114898A
Other languages
German (de)
English (en)
Other versions
EP0703422A3 (fr
Inventor
Roland Dipl.-Ing. Maier (Fh)
Walter Dipl.-Ing. Holz
Hans-Christian Ing. Grad. 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
Individual
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 Individual filed Critical Individual
Publication of EP0703422A2 publication Critical patent/EP0703422A2/fr
Publication of EP0703422A3 publication Critical patent/EP0703422A3/fr
Withdrawn legal-status Critical Current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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • 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
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0415—Refrigeration circuit bypassing means for the receiver
    • 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
    • F25B2400/16—Receivers
    • 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 freezer with at least two thermally separated freezer compartments arranged within its heat-insulating housing, each of which is cooled by an evaporator, which lie in a refrigeration circuit with a compressor and a condenser and 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, that the freezing speed for frozen goods is increased significantly in a simple manner.
  • the freezer compartments have different usable volumes, and are cooled by the evaporators arranged in series, of which the evaporator arranged in the freezer compartment has a larger usable volume which is connected downstream of the other evaporator, which on the inlet side is connected to the refrigeration circuit by a deflection element coupling reservoir for liquid refrigerant is connected upstream.
  • the solution according to the invention makes it possible in a simple manner, simply by decoupling the reservoir filled with liquid refrigerant, to operate the evaporator used to cool the freezer compartment with the lower usable content with the compressor designed for both evaporators, as a result of which, per se, for this evaporator oversized compressor, the evaporation pressure in the refrigeration circuit and thus the evaporation temperature in the evaporator used to cool the freezer compartment with a lower usable 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.
  • the same heat insulation of this compartment results in a reduced heat input, which also lowers the evaporation temperature and thus increases the cooling capacity of the evaporator.
  • the reservoir filled with liquid refrigerant By coupling the reservoir filled with liquid refrigerant, operation that is essentially performance-optimized for both evaporators and thus efficient cooling is achieved of the two freezer compartments possible. Furthermore, by decoupling liquid refrigerant from the refrigeration cycle through the reservoir, it is always ensured that the evaporator used to cool the freezer compartment is never overfilled, so that it is ensured that the compressor cannot suck in any liquid refrigerant and can therefore be damaged.
  • the refrigeration capacity increases in proportion to the temperature difference, so that the freezing speed for freshly stored frozen goods is significantly increased by the significant lowering of the evaporation temperature in the evaporator serving to cool the freezer compartment.
  • the reservoir serving to hold liquid refrigerant and the deflecting member serving to couple it into the refrigerant circuit are connected downstream of the condenser.
  • the reservoir serving to hold liquid refrigerant and the deflecting member serving to couple it into the refrigerant circuit is arranged between the compressor and the condenser.
  • the reservoir for receiving liquid refrigerant is coupled into the refrigerant circuit by the deflection element when both evaporators are in operation.
  • This measure provides the refrigerant circuit with the amount of refrigerant that is matched to an optimal energy consumption of the freezer.
  • the reservoir used to hold liquid refrigerant during operation of the evaporator arranged in the freezer compartment with a smaller usable volume is decoupled from the refrigerant circuit by the deflecting element.
  • the liquid refrigerant accumulated in the reservoir is removed from the refrigeration cycle in a simple manner, as a result of which the amount of refrigerant remaining in the refrigeration cycle is optimally adapted to the deepest evaporator temperature suitable for achieving the lowest possible deep evaporator temperature for rapid freezing of fresh frozen goods at the smaller usable volume for cooling the freezer compartment serving evaporator is achieved without additional measures.
  • the reservoir can be particularly easily coupled into the refrigerant circuit if, according to a further advantageous embodiment of the subject matter of the invention, it is provided that the deflection element is designed as an electrically controllable 3/2-way solenoid valve.
  • the electrically controllable solenoid valve is controlled by an electronic evaluation circuit depending on the temperature in the freezer compartment with the larger usable volume for coupling the reservoir into and out of the refrigerant circuit.
  • the freezer compartment with the larger usable volume is temporarily supplied with refrigerant as required, so that an inadmissible temperature rise in this compartment is always reliably prevented.
  • the invention provides that the solenoid valve decoupling of the reservoir from the refrigerant circuit can be controlled manually by actuating an electrical switch.
  • a user of the freezer can quickly initiate a rapid freezing process for fresh frozen goods as required without complex control measures of the freezer.
  • FIG. 1 shows a purely schematically illustrated household freezer 10, in the heat-insulating housing 11 of which two freezer compartments 12 and 12 are arranged one above the other 13 are provided.
  • the evaporators 15 and 16 are part of a refrigeration system 17, which has a refrigerant compressor 18 designed for simultaneous cooling of the two freezer compartments 12 and 13. On its pressure side, this is fluidically connected to a condenser 19, which is equipped on the output side with a refrigerant line branch 20. This serves to connect two refrigerant line sections 21 and 22, the latter of which is equipped with a reservoir 23 serving as a collector for liquid refrigerant.
  • the line sections 21 and 22 are each fed to an input of an electrically controllable solenoid valve 24, which has two inputs and serves as a deflecting element, which is controlled by an electronic evaluation circuit depending on the temperature prevailing in the freezer compartment 13 with the larger usable volume and which has two working positions I and II has, of which in the latter the reservoir 23 is coupled into the refrigeration cycle.
  • the solenoid valve 24 is connected to a throttle tube 25, which serves to reduce the pressure of the liquid refrigerant flowing in from the condenser 19, and is designed in a spiral-like manner and which is connected to the injection point of the evaporator 16, not shown.
  • FIG. 1 and 2 different operating states of the household freezer 10 and the refrigeration system 17 are shown by solid lines, the operating state shown in FIG. 1 representing the "normal operation” in which the solenoid valve 24 is operated in its working position II , in which the reservoir 23 is integrated into the refrigeration cycle and thus the amount of refrigerant required for cooling both evaporators 15 and 16 is circulated in the refrigeration cycle by the refrigerant compressor 18, so that the freezer compartments 12 and 13 reach their intended operating temperature.
  • the refrigerant flow generated by the refrigerant compressor 18 is supplied via the condenser 19, the reservoir 23 and the throttle tube 25 to the evaporator 15 connected upstream in the series connection of the two evaporators 15 and 16, from the output side of which the liquid refrigerant flows into the evaporator 16, from which it flows is sucked in by the refrigerant compressor 18 in the vapor state.
  • the solenoid valve 24 is brought into its working position I by manual actuation of an electrical switch (not shown) on the domestic freezer 10, in which the reservoir 23 serving as a liquid refrigerant reservoir from the Cooling circuit is disconnected.
  • an electrical switch not shown
  • liquid refrigerant no longer flows through the reservoir 28, so that the reservoir 23 has a lower temperature than the condenser 19, as a result of which liquid refrigerant collects in the reservoir 23.
  • 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 15 and 16 can also be designed as a wire tube evaporator with evaporator stages arranged at different heights.

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)
EP95114898A 1994-09-21 1995-09-21 Appareil de congélation Withdrawn EP0703422A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4433712A DE4433712A1 (de) 1994-09-21 1994-09-21 Kühlmöbel mit wenigstens zwei Fächern unterschiedlicher Temperatur
DE4433712 1994-09-21

Publications (2)

Publication Number Publication Date
EP0703422A2 true EP0703422A2 (fr) 1996-03-27
EP0703422A3 EP0703422A3 (fr) 1997-09-24

Family

ID=6528820

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95112177A Expired - Lifetime EP0703421B1 (fr) 1994-09-21 1995-08-02 Armoire frigorifique avec au moins deux compartiments à des températures différentes
EP95114898A Withdrawn EP0703422A3 (fr) 1994-09-21 1995-09-21 Appareil de congélation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP95112177A Expired - Lifetime EP0703421B1 (fr) 1994-09-21 1995-08-02 Armoire frigorifique avec au moins deux compartiments à des températures différentes

Country Status (5)

Country Link
EP (2) EP0703421B1 (fr)
DE (2) DE4433712A1 (fr)
ES (1) ES2159586T3 (fr)
SI (1) SI0703421T1 (fr)
TR (2) TR199501116A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008077697A3 (fr) * 2006-12-22 2008-09-04 Bsh Bosch Siemens Hausgeraete Meuble de réfrigération pourvu d'au moins deux compartiments thermiquement séparés l'un de l'autre
WO2016113899A1 (fr) * 2015-01-16 2016-07-21 三菱電機株式会社 Dispositif à cycle frigorifique

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843484A1 (de) * 1998-09-22 2000-03-23 Bsh Bosch Siemens Hausgeraete Einkreiskältesystem
AU6887700A (en) * 1999-06-04 2000-12-28 Arcelik A.S. A supplementary evaporator for refrigerators
BR9905700A (pt) * 1999-12-03 2001-09-25 Brasil Compressores Sa Aperfeiçoamento em circuito de refrigeração
DE10154273A1 (de) * 2001-11-05 2003-05-15 Bsh Bosch Siemens Hausgeraete Tischkühlgerät
DE10162500A1 (de) 2001-12-19 2003-07-03 Bsh Bosch Siemens Hausgeraete Kältemaschine mit einem druckseitigen Kältemittelsammler

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2133961A (en) * 1936-11-11 1938-10-25 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2133964A (en) * 1937-04-01 1938-10-25 Westinghouse Electric & Mfg Co Refrigerating apparatus
DE1095861B (de) * 1958-04-19 1960-12-29 Atlas As Kuehl- oder Gefrieranlage mit mindestens zwei voneinander getrennten Kammern
DE3317074C2 (de) * 1983-05-10 1986-07-17 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kombiniertes Kühl- und Gefriergerät, mit einem gemeinsamen Kälteaggregat
DE3508805A1 (de) 1985-03-12 1986-09-18 Bosch Siemens Hausgeraete Kuehlmoebel, insbesondere zweitemperaturen-kuehlschrank
DE3721388C1 (de) * 1987-06-29 1988-12-08 Sueddeutsche Kuehler Behr Vorrichtung zur Klimatisierung des Innenraums von Personenkraftwagen
ES2012138A6 (es) * 1988-11-08 1990-03-01 Ulgor S Coop Mejoras introducidas en un frigorifico-congelador combinado de tres recintos independientes.
DE3930319A1 (de) * 1989-09-11 1991-03-14 Mo T I Kompressionskaelteaggregat
DE4020537A1 (de) 1990-06-28 1992-01-02 Bauknecht Hausgeraete Mehrtemperaturen-kuehlmoebel, z.b. kuehl-gefrierkombination

Non-Patent Citations (1)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008077697A3 (fr) * 2006-12-22 2008-09-04 Bsh Bosch Siemens Hausgeraete Meuble de réfrigération pourvu d'au moins deux compartiments thermiquement séparés l'un de l'autre
EP2426434A1 (fr) * 2006-12-22 2012-03-07 BSH Bosch und Siemens Hausgeräte GmbH Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre
CN101568773B (zh) * 2006-12-22 2012-07-25 Bsh博世和西门子家用器具有限公司 包括至少两个隔热隔室的制冷设备
WO2016113899A1 (fr) * 2015-01-16 2016-07-21 三菱電機株式会社 Dispositif à cycle frigorifique
JPWO2016113899A1 (ja) * 2015-01-16 2017-07-13 三菱電機株式会社 冷凍サイクル装置

Also Published As

Publication number Publication date
ES2159586T3 (es) 2001-10-16
EP0703421A2 (fr) 1996-03-27
DE4433712A1 (de) 1996-03-28
TR199501152A2 (tr) 1996-06-21
EP0703421A3 (fr) 1997-09-24
DE59509398D1 (de) 2001-08-16
EP0703421B1 (fr) 2001-07-11
SI0703421T1 (en) 2002-10-31
TR199501116A2 (tr) 1996-06-21
EP0703422A3 (fr) 1997-09-24

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