EP0789207A2 - Appareil de congélation - Google Patents

Appareil de congélation Download PDF

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Publication number
EP0789207A2
EP0789207A2 EP96113000A EP96113000A EP0789207A2 EP 0789207 A2 EP0789207 A2 EP 0789207A2 EP 96113000 A EP96113000 A EP 96113000A EP 96113000 A EP96113000 A EP 96113000A EP 0789207 A2 EP0789207 A2 EP 0789207A2
Authority
EP
European Patent Office
Prior art keywords
freezer
evaporator
control means
freezer compartment
evaporators
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
EP96113000A
Other languages
German (de)
English (en)
Other versions
EP0789207B1 (fr
EP0789207A3 (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
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
Priority to SI9630664T priority Critical patent/SI0789207T1/xx
Publication of EP0789207A2 publication Critical patent/EP0789207A2/fr
Publication of EP0789207A3 publication Critical patent/EP0789207A3/fr
Application granted granted Critical
Publication of EP0789207B1 publication Critical patent/EP0789207B1/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
    • 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
    • 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
    • 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 freezer with at least two thermally separated freezer compartments arranged inside its heat-insulating housing, each of which is cooled by an evaporator and which are charged with refrigerant by a compressor.
  • 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.
  • freezer compartments are equipped with different useful contents and the evaporators used to cool them are connected in series in terms of flow, the evaporator serving to cool the freezer compartment with the larger useful contents being able to be decoupled from the refrigeration circuit by two control means and serves as a reservoir for liquid refrigerant.
  • the solution according to the invention enables the operation of a freezer with two freezer compartments with simple means, each of which is suitable as a **** freezer compartment.
  • the cooling capacity is this designed that the cheapest energy consumption is achieved according to the standard, the compressor being selected so that it works with a favorable efficiency under the conditions specified by standard regulations.
  • the refrigeration capacity increases proportionally 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 for cooling the freezer compartment.
  • the refrigerant contained in the evaporator for cooling the freezer compartment with the greater useful content can be coupled out particularly safely if, according to a preferred embodiment of the subject of the invention, it is provided that one of the control means can be controlled as an electrically controllable one that is introduced into the series connection of the evaporators Three-way solenoid valve and the other control means than at the outlet of the larger useful content in the freezer compartment Evaporator arranged electrically controllable shut-off valve is formed.
  • both control means are designed as electrically controllable three / two-way solenoid valves, one of which is connected in series between the evaporators is and the other three-way solenoid valve is arranged on the output side of the evaporator for cooling the freezer compartment with a larger useful content.
  • the amount of refrigerant required to achieve a low evaporation temperature in the evaporator for cooling the freezer compartment with a lower useful content in the refrigeration circuit can be achieved particularly precisely if, according to a next preferred embodiment of the subject matter of the invention, the switching process of the control means for decoupling the evaporator for cooling the freezer compartment is larger Usable content takes place at least approximately at the same time.
  • control means can be electrically controlled by an electronic evaluation circuit which, depending on the temperature in the freezer compartment with a greater useful content, switches the control means for coupling or decoupling the evaporator in this freezer compartment.
  • the freezing process in the freezer compartment with less useful content can be introduced in a particularly simple manner if, according to a next advantageous embodiment of the object of the invention, it is provided that the control means, by manually actuating an electrical switch, into the larger ones for decoupling the evaporator for cooling the freezer compartment Useful content serving switch position can be brought.
  • a particularly favorable transfer of cold from the evaporator surfaces to the goods to be frozen results if, according to a further advantageous embodiment of the object of the invention, it is provided that the evaporators used to cool the freezer compartment are designed as tiered wire tube evaporators.
  • Evaporators for cooling the freezer compartments can be arranged in a particularly space-saving manner if, according to an alternative embodiment of the object of the invention, it is provided that the evaporators used to cool the freezer compartments are designed as essentially closed-surface evaporator boards.
  • the freezer compartment with the lower useful content in the housing of the freezer is arranged above the freezer compartment with the larger usable content.
  • Such an arrangement has the advantage that, in addition to facilitating the loading of the freezer compartment which serves to freeze the frozen goods quickly, a significantly more favorable access option for checking the freezer condition of the frozen goods is created.
  • 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 formed by a heat-insulating Intermediate shelf 14 is thermally separated from one another and has a useful content of different sizes, the freezer compartment 12 equipped with the lower useful content being arranged at the top.
  • the freezer compartment 12 is cooled by a plate-like evaporator 15, the winding-side refrigerant channel arrangement 16 of which is connected on the output side to the input of an electrically controllable three / two-way solenoid valve 17 which has one input and two outputs.
  • One of the outputs of the solenoid valve 17 is connected to a connecting line 18, which can be connected to the refrigerant channel arrangement 16 of the evaporator 15 in a first working position I of the solenoid valve 17.
  • the other output of the solenoid valve 17 is connected to the inlet of a refrigerant channel arrangement 16 of the evaporator 15 belonging to a circuit-board-shaped evaporator 19 in a second working position II of the solenoid valve 17 with the refrigerant channel arrangement 20 of the evaporator 19 in series connection.
  • the evaporator 19 serves to cool the freezer compartment 13 arranged below the freezer compartment 12 and has an electrically controllable shut-off valve 21 at the outlet of its refrigerant channel arrangement 20, which is connected on the inlet side to the refrigerant channel arrangement 20 and which on the outlet side is connected to the connection line 18 in terms of flow technology connected refrigerant line 22 is connected.
  • This is connected to the suction side of a refrigerant compressor 23, which is connected on the pressure side to a condenser 24.
  • This is connected at its outlet via a refrigerant line, not specified, to a spiral-shaped throttle tube 25 which serves to reduce the pressure of the refrigerant flowing in from the condenser 24 and which does not shown injection point of the evaporator 15 is fluidly connected.
  • FIG. 1 and 2 different operating states of the household freezer 10 and its refrigeration system are shown by solid lines, the operating state shown in FIG. 1 showing the "normal operation", in which on the one hand the solenoid valve 17 in its working position II the two evaporators 15 and 19 connects in series, and on the other hand the shut-off valve 21 arranged at the outlet of the evaporator 19 is in its open position.
  • both evaporators 15 and 19 are arranged within the refrigerant circuit and flowed through by liquid refrigerant, so that the freezer compartments 12 and 13 cooled by them have their intended operating temperature.
  • control means used to control the refrigerant flow can be brought into their other working positions, namely the solenoid valve 17 and the shut-off valve 21 by means of a manually operated electrical switch (not shown), the solenoid valve 17 after the switching process is in its working position I connecting the refrigerant channel arrangement 16 to the connecting line 18, while the shut-off valve 21 changes from its open position to its blocking position by the switching process.
  • the evaporator 19 with its refrigerant channel arrangement 20 and the liquid refrigerant therein is decoupled from the refrigeration circuit, so that only the amount of refrigerant required to cool the evaporator 15 remains in the refrigeration circuit, as a result of which the evaporation pressure of the refrigerant amount remaining in the refrigeration circuit drops due to the refrigerant compressor 23 designed for supplying both evaporators 15 and 19 with liquid refrigerant, and thus the refrigerant compressor Evaporation temperature of the refrigerant is significantly reduced.
  • a temperature difference strongly accelerating the freezing process is created between the evaporator 15 and the freshly inserted frozen food, which is additionally favorably influenced by the lowering of the evaporation temperature due to the lower heat input into the freezer compartment 12 due to its lower useful content .
  • a fan circulating the cooling air therein can additionally be provided in the freezer compartment 12, which results in a more favorable heat transfer from the evaporator 15 to the frozen goods stored in the freezer compartment 12.
  • both the solenoid valve 17 and the shut-off valve 21 are switched to the working position in which the electronic evaluation circuit (not shown) evaluates the temperature in the freezer compartment 13 the evaporator 19 is coupled back into the refrigerant circuit, so that the refrigerant channel arrangement 20 is again flowed through by liquid refrigerant.
  • 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 19 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)
EP96113000A 1995-09-21 1996-08-09 Appareil de congélation Expired - Lifetime EP0789207B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630664T SI0789207T1 (en) 1995-09-21 1996-08-09 Freezing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19535145A DE19535145A1 (de) 1995-09-21 1995-09-21 Gefriergerät
DE19535145 1995-09-21

Publications (3)

Publication Number Publication Date
EP0789207A2 true EP0789207A2 (fr) 1997-08-13
EP0789207A3 EP0789207A3 (fr) 2000-05-31
EP0789207B1 EP0789207B1 (fr) 2003-11-05

Family

ID=7772804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113000A Expired - Lifetime EP0789207B1 (fr) 1995-09-21 1996-08-09 Appareil de congélation

Country Status (5)

Country Link
EP (1) EP0789207B1 (fr)
DE (2) DE19535145A1 (fr)
ES (1) ES2210330T3 (fr)
SI (1) SI0789207T1 (fr)
TR (1) TR199600707A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (7)

* 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
US2440534A (en) * 1947-01-04 1948-04-27 Gen Electric Selecting valve for two-temperature refrigerating systems
GB647601A (en) * 1947-04-22 1950-12-20 British Thomson Houston Co Ltd Improvements in and relating to refrigerating systems
FR987661A (fr) * 1948-06-30 1951-08-17 Svenska Turbinfab Ab Perfectionnements aux machines frigorifiques ou aux pompes thermiques réfrigérantes
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
DE1751420A1 (de) * 1968-05-27 1970-10-01 Siegas Metallwarenfab Kombinierter Kuehlschrank

Patent Citations (7)

* 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
US2440534A (en) * 1947-01-04 1948-04-27 Gen Electric Selecting valve for two-temperature refrigerating systems
GB647601A (en) * 1947-04-22 1950-12-20 British Thomson Houston Co Ltd Improvements in and relating to refrigerating systems
FR987661A (fr) * 1948-06-30 1951-08-17 Svenska Turbinfab Ab Perfectionnements aux machines frigorifiques ou aux pompes thermiques réfrigérantes
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
DE1751420A1 (de) * 1968-05-27 1970-10-01 Siegas Metallwarenfab Kombinierter Kuehlschrank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
ES2210330T3 (es) 2004-07-01
EP0789207B1 (fr) 2003-11-05
EP0789207A3 (fr) 2000-05-31
SI0789207T1 (en) 2004-06-30
DE19535145A1 (de) 1997-03-27
TR199600707A2 (tr) 1997-04-22
DE59610808D1 (de) 2003-12-11

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