EP0703421A2 - Armoire frigorifique avec au moins deux compartiments à des températures différentes - Google Patents

Armoire frigorifique avec au moins deux compartiments à des températures différentes Download PDF

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Publication number
EP0703421A2
EP0703421A2 EP95112177A EP95112177A EP0703421A2 EP 0703421 A2 EP0703421 A2 EP 0703421A2 EP 95112177 A EP95112177 A EP 95112177A EP 95112177 A EP95112177 A EP 95112177A EP 0703421 A2 EP0703421 A2 EP 0703421A2
Authority
EP
European Patent Office
Prior art keywords
refrigerant
compressor
circuit
refrigerated cabinet
cabinet according
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
EP95112177A
Other languages
German (de)
English (en)
Other versions
EP0703421A3 (fr
EP0703421B1 (fr
Inventor
Roland Dipl.-Ing. Maier
Walter Dipl.-Ing. Holz
Friedrich Dipl.-Ing. Arnold
Wolfgang Dipl.-Ing. Nuiding
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 SI9530493T priority Critical patent/SI0703421T1/xx
Publication of EP0703421A2 publication Critical patent/EP0703421A2/fr
Publication of EP0703421A3 publication Critical patent/EP0703421A3/fr
Application granted granted Critical
Publication of EP0703421B1 publication Critical patent/EP0703421B1/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
    • 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 refrigerator with at least two compartments of different temperatures, the evaporators of which lie in a refrigeration circuit together with a compressor and a condenser and are acted upon by the compressor when a refrigeration requirement is signaled for the compartments with liquid refrigerant, the amount of refrigerant contributing to refrigeration being controllable is.
  • the compressor is connected downstream of the compressor on the pressure side, which is connected to the pressure line of the compressor via a connecting line similar to a cul-de-sac and which has a heating element for Expulsion of the liquid refrigerant stored in its collection space is assigned.
  • the heating element assigned to the collector is activated with a lead time before the compressor is started up, in order to then supply the stored liquid refrigerant to the refrigerant circuit.
  • Another two-temperature cooling device is known from DE-OS 40 20 537, the thermally separated refrigeration compartments of different temperatures are connected in series within a refrigeration circuit equipped with a single compressor and, depending on the refrigeration requirement, controlled individually by shut-off throttles can be acted upon together with refrigerant, the amount of refrigerant being matched to the charge of the two evaporators. If refrigeration demand is only signaled for one of the two refrigeration compartments, the amount of refrigerant available in the entire refrigeration circuit is divided according to the capacity of this evaporator by tapping the condenser to prevent overfilling of an evaporator to be operated individually. As a result of the tapping of the condenser, only the section lying in front of this tapping is flowed through by the refrigerant which is forcibly circulated by the compressor.
  • the invention has for its object to propose measures in a refrigerator according to the preamble of claim 1, on the basis of which the optimal amount of refrigerant for cooling the individual compartments is always provided and at the same time the disadvantages of the prior art are avoided.
  • the compressor is connected on the pressure side to a reservoir for receiving liquid refrigerant, which can be coupled into the refrigeration circuit by a deflection element, the refrigerant flow caused by the compressor being coupled in by the coupling is guided at least substantially over the reservoir.
  • the solution according to the invention ensures that the refrigerant quantity required for all subjects is available to the refrigeration circuit immediately after the refrigeration requirement is signaled, without any time reserve, when there is a refrigeration request. Furthermore, the entire surface of the condenser is always acted on as a heat exchange surface, so that, in particular when the refrigeration circuit is operated underfilled, the compressor running times and thus the energy consumption of the refrigerator is significantly reduced. In addition, energy-intensive heaters for expelling the refrigerant from the collector can be omitted.
  • the reservoir serving to hold liquid refrigerant and the deflecting member capable of being coupled into the refrigerant circuit are connected downstream of the condenser.
  • the reservoir serving to hold liquid refrigerant and the deflecting member serving to integrate it into the refrigeration circuit between the compressor and the condenser is arranged.
  • the deflection element is connected upstream of the reservoir serving to hold liquid refrigerant.
  • the deflection element is designed as a 3/2-way valve.
  • a 3/2-way valve is particularly expedient if, according to a next preferred embodiment of the object of the invention, it is provided that the 3/2-way valve is designed as a bistable, electrically controllable solenoid valve.
  • the solenoid valve is particularly precisely timed and controlled as required if, according to a further preferred embodiment of the object of the invention, it is provided that the electrically controllable solenoid valve is controlled by an electrical evaluation circuit as a function of the temperature in the compartment with the higher storage temperature by a temperature sensor and by the evaluation circuit rated temperature is controlled.
  • the evaporators used to cool the compartments at different temperatures are arranged in series with one another within the refrigeration circuit and have a cooling capacity falling in the direction of the refrigerant flow.
  • the evaporators used to cool the compartments at different temperatures are arranged in parallel within the refrigeration circuit.
  • a household cooling device 10 is shown, on the heat-insulating housing 11 three doors 12 to 14 are pivoted about vertical axes of rotation. These serve to close compartments 17 to 19, which are arranged one above the other, are produced by two spaced-apart partition walls 15 and 16 and are thermally separated from one another and have different storage temperatures.
  • the overhead compartment 17, which can be closed with the door 12 is designed as a normal cooling compartment
  • the middle compartment 18, which is separated by the intermediate wall 15 and can be covered by the door 13 is designed as a cold storage compartment
  • the bottom compartment, through the intermediate wall 16 is designed as a cold storage compartment
  • Cold storage compartment 18 thermally separated compartment 19 serves as a freezer compartment and can be closed with the door 14.
  • the subject-specific storage temperature prevailing in the individual compartments 17 to 19 is generated and maintained by a single refrigeration circuit 20.
  • the refrigeration circuit 20 is equipped with three evaporators 21 to 23 arranged in series within the refrigeration circuit to maintain the temperature in the individual compartments 17 to 19, with different refrigeration capacities, of which the highest refrigeration capacity having evaporator 21 is assigned to the freezer compartment 19 and has an injection point for the refrigerant.
  • Downstream of the freezer compartment evaporator 21 in the refrigerant flow direction is the evaporator 22 which serves to cool the cold storage compartment 18 and to which the evaporator 23 associated with the normal refrigeration compartment 17 and having the lowest cooling capacity is connected.
  • a refrigerant compressor 24 which is followed by a condenser 25 on the pressure side in the refrigerant flow direction, which is arranged, for example, on the rear side of the housing 11 facing away from the doors 12 to 14.
  • the condenser 25 is followed on the output side by a dryer cartridge 26 equipped with hygroscopic material, which serves to absorb the residual water content arising from the liquid refrigerant during the filling process of the cooling circuit.
  • the dryer cartridge 26 is connected on the output side to the input of a deflection member 27.
  • this is designed as a bistable 3/2-way solenoid valve which, in its switching position 1, creates a flow path for the refrigerant between the outlet of the dryer cartridge 26 and the inlet of the freezer compartment evaporator 21, which is designed as an injection point.
  • the solenoid valve 27 connects the outlet of the dryer cartridge 26 to the input of a reservoir 28 used to hold liquid refrigerant, which is connected on the output side to the refrigerant line leading to the freezer compartment evaporator 21, which can be controlled via the switch position 1 of the solenoid valve 27, so that via the solenoid valve 27 the reservoir 28 can be coupled into the refrigerant flow.
  • the control signals which cause the switching positions of the solenoid valve 27 to change are generated by evaluation and control electronics 30, which are not described in detail, and are supplied to the solenoid valve 27 via a signal line 31. Furthermore, the storage temperature prevailing in the normal refrigerator compartment 17 or in the cold storage compartment 18 is detected via the evaluation and control electronics 30, with a sensor element 32 designed as an NTC sensor and detecting the air temperature being provided for this purpose, each of which via a signal line 33 and 34 for data transmission to the evaluation and control electronics 30 is connected to the latter.
  • the evaluation and control electronics 30 also serve to control a fan 35 which circulates the storage air in the cold storage compartment 18 and which is connected for the purpose of control via a control line 36 to the evaluation and control electronics 30, via which the operation of the compressor 24 is also controlled, A control line 37 connecting the evaluation and control electronics 30 to the compressor 24 is provided for this purpose.
  • the operation of the only compressor 24 arranged in its cooling circuit 20 is determined by the storage temperature prevailing in the cold storage compartment 18 and detected by the sensor element 32 arranged therein, whose corresponding voltage signals are fed via the signal line 34 to the evaluation and control electronics 30, by means of which the compressor 24 is activated or deactivated via the control line 37 when the temperature limit values for the storage temperature in the cold storage compartment 18 are reached.
  • the amount of liquid refrigerant circulated by the controlled compressor 24 in the refrigeration circuit 20 is controlled as a function of the temperature prevailing in the cooling compartment 17, detected by the NTC sensor and transmitted via the signal line 33 to the evaluation and control electronics 30, this falling below a predetermined temperature limit in Cooling compartment 17 switched the solenoid valve 27 into its switching position 1 via the signal line 31, so that the reservoir 28 serving as a collector for liquid refrigerant is no longer flowed through by the refrigerant.
  • the reservoir 28 becomes colder than the condenser 25 connected upstream of it in the opposite direction of the refrigerant flow, as a result of which liquid refrigerant accumulates in the reservoir 28, which in terms of its capacity corresponds at least to the liquid volume of the amount of liquid refrigerant to be extracted from the cooling circuit 20 for temperature control of the storage compartments.
  • the refrigeration circuit 20 is operated underfilled, an underfilling of this type being particularly noticeable in the cooling compartment evaporator 23 located at the last position in the evaporator series connection, which is depleted of liquid refrigerant due to the solenoid valve position, so that the temperature in the normal cooling compartment 17 rises.
  • the reservoir 28 is integrated into the refrigeration circuit 20 and thus flows through so that the amount of liquid refrigerant accumulated therein reaches the refrigeration circuit 20 and is available for cooling the storage compartments 17 to 19 of the cooling device 10.
  • the invention can also be applied to evaporators connected in parallel, with a corresponding circuit with electrically controllable solenoid valves being provided for the separate application of refrigerant.

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

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530493T SI0703421T1 (en) 1994-09-21 1995-08-02 Refrigerated cabinet with at least two compartments having different temperatures

Applications Claiming Priority (2)

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

Publications (3)

Publication Number Publication Date
EP0703421A2 true EP0703421A2 (fr) 1996-03-27
EP0703421A3 EP0703421A3 (fr) 1997-09-24
EP0703421B1 EP0703421B1 (fr) 2001-07-11

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 After (1)

Application Number Title Priority Date Filing Date
EP95114898A Withdrawn EP0703422A3 (fr) 1994-09-21 1995-09-21 Appareil de congélation

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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017588A1 (fr) * 1998-09-22 2000-03-30 BSH Bosch und Siemens Hausgeräte GmbH Systeme de refroidissement a circuit unique
WO2000075580A2 (fr) * 1999-06-04 2000-12-14 Arçelik A.Ş. Evaporateur supplementaire pour refrigerateur
WO2001040719A1 (fr) * 1999-12-03 2001-06-07 Empresa Brasileira De Compressores S/A. - Embraco Amelioration dans un circuit de refrigeration
WO2003052331A1 (fr) * 2001-12-19 2003-06-26 BSH Bosch und Siemens Hausgeräte GmbH Machine frigorifique munie d'un collecteur d'agent refrigerant cote refoulement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10154273A1 (de) * 2001-11-05 2003-05-15 Bsh Bosch Siemens Hausgeraete Tischkühlgerät
DE102006061091A1 (de) * 2006-12-22 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Kühlmöbel mit wenigstens zwei thermisch voneinander getrennten Fächern
WO2016113899A1 (fr) * 2015-01-16 2016-07-21 三菱電機株式会社 Dispositif à cycle frigorifique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508805A1 (de) 1985-03-12 1986-09-18 Bosch Siemens Hausgeraete Kuehlmoebel, insbesondere zweitemperaturen-kuehlschrank
DE4020537A1 (de) 1990-06-28 1992-01-02 Bauknecht Hausgeraete Mehrtemperaturen-kuehlmoebel, z.b. kuehl-gefrierkombination

Family Cites Families (7)

* 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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508805A1 (de) 1985-03-12 1986-09-18 Bosch Siemens Hausgeraete Kuehlmoebel, insbesondere zweitemperaturen-kuehlschrank
DE4020537A1 (de) 1990-06-28 1992-01-02 Bauknecht Hausgeraete Mehrtemperaturen-kuehlmoebel, z.b. kuehl-gefrierkombination

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017588A1 (fr) * 1998-09-22 2000-03-30 BSH Bosch und Siemens Hausgeräte GmbH Systeme de refroidissement a circuit unique
WO2000075580A2 (fr) * 1999-06-04 2000-12-14 Arçelik A.Ş. Evaporateur supplementaire pour refrigerateur
WO2000075580A3 (fr) * 1999-06-04 2001-02-08 Arcelik As Evaporateur supplementaire pour refrigerateur
WO2001040719A1 (fr) * 1999-12-03 2001-06-07 Empresa Brasileira De Compressores S/A. - Embraco Amelioration dans un circuit de refrigeration
WO2003052331A1 (fr) * 2001-12-19 2003-06-26 BSH Bosch und Siemens Hausgeräte GmbH Machine frigorifique munie d'un collecteur d'agent refrigerant cote refoulement
US7520141B2 (en) 2001-12-19 2009-04-21 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerating machine with a pressure-side refrigerant header

Also Published As

Publication number Publication date
ES2159586T3 (es) 2001-10-16
TR199501152A2 (tr) 1996-06-21
EP0703421A3 (fr) 1997-09-24
DE4433712A1 (de) 1996-03-28
TR199501116A2 (tr) 1996-06-21
EP0703422A2 (fr) 1996-03-27
SI0703421T1 (en) 2002-10-31
EP0703421B1 (fr) 2001-07-11
EP0703422A3 (fr) 1997-09-24
DE59509398D1 (de) 2001-08-16

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