EP0602371A2 - Réfrigérateur à enveloppe thermiquement isolée - Google Patents

Réfrigérateur à enveloppe thermiquement isolée Download PDF

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Publication number
EP0602371A2
EP0602371A2 EP93117883A EP93117883A EP0602371A2 EP 0602371 A2 EP0602371 A2 EP 0602371A2 EP 93117883 A EP93117883 A EP 93117883A EP 93117883 A EP93117883 A EP 93117883A EP 0602371 A2 EP0602371 A2 EP 0602371A2
Authority
EP
European Patent Office
Prior art keywords
refrigerant
evaporator
compressor
cooling device
compartments
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
EP93117883A
Other languages
German (de)
English (en)
Other versions
EP0602371A3 (en
EP0602371B1 (fr
Inventor
Walter Dipl.-Ing. Holz
Friedrich Dipl.-Ing. Arnold
Wolfgang Dipl.-Ing. Nuiding (Fh)
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 EP0602371A2 publication Critical patent/EP0602371A2/fr
Publication of EP0602371A3 publication Critical patent/EP0602371A3/de
Application granted granted Critical
Publication of EP0602371B1 publication Critical patent/EP0602371B1/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
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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

Definitions

  • the invention relates to a cooling device with a heat-insulated housing and with at least two thermally separated compartments of different temperature, each of which is equipped with an evaporator, which are supplied with refrigerant from a common refrigerant compressor, that via a valve arrangement, which is also the compressor controlling controller unit is controlled, one of the evaporators is supplied, the need for the supply of refrigerant to the respective evaporator is signaled to the controller unit via temperature sensors arranged in the compartments.
  • DE-OS 19 22 517 discloses a refrigeration system which is essentially composed of a compressor, a condenser and two evaporators which serve to produce different temperatures.
  • the flow of refrigerant to these two evaporators one of which is arranged, for example, in a freezer compartment and the other in a refrigerator compartment of a household refrigerator, is electromagnetic via one Operated 3/2-way valve controlled, the switching of this valve is initiated from the evaporator in one refrigeration circuit to the evaporator in the other refrigeration circuit by a thermostat arranged in the compartments of different temperatures.
  • the temperature zones realized with two individual evaporators can be regulated independently of the other temperature zone in each case by optionally supplying one of the evaporators with refrigerant.
  • this system has the disadvantage that the refrigerant of the refrigerant circuit which is currently inactive is not available to the other circuit after the solenoid valve has been switched over, but remains in the inactive circuit.
  • the compressor runtime inevitably increases, since the temperature for switching off the compressor is reached considerably later. This results in long compressor running times, which increases energy consumption on the one hand and the often unpleasant noise of compressor operation over a longer period of time.
  • the invention has for its object to provide a refrigeration system for a cooling device according to the preamble of claim 1, in which each of the actively switched refrigerant circuit, the entire amount of refrigerant in the refrigerant system is available.
  • the object is achieved according to the invention in that the refrigerant located in the evaporator charged with refrigerant for cooling purposes is supplied to a common reservoir arranged in the flow direction of the refrigerant upstream of the compressor in the respective refrigerant circuit after the refrigerant flow to this evaporator has been interrupted.
  • the solution according to the invention minimizes the compressor running times required for cooling the compartments of different temperatures, since the full amount of refrigerant in the refrigeration system is always available, which on the one hand significantly reduces the energy consumption of the refrigeration system and on the other hand, in the event that a cooling device with the inventive Refrigeration system is installed in a living room, the noise-causing compressor run is limited in time.
  • the evaporators are equipped with refrigerant channels, the channel course of which, starting from the injection point of the respective evaporator, is arranged in a falling manner up to their outputs and is free of siphon-like structures.
  • the evaporators are higher on the outlet side than the reservoir.
  • the refrigerant flow from the evaporators to the reservoir is guided in a particularly simple manner if, according to a further advantageous embodiment of the object of the invention, it is provided that the refrigerant channels of the evaporators are combined on the output side in a common refrigerant channel, which in the opposite of the outputs of the Evaporator deeper reservoir opens.
  • the reservoir has an inflow and an outflow opening, which are arranged offset in height from one another, the higher outlet opening being connected to the compressor in terms of flow technology.
  • valve arrangement for controlling the flow of refrigerant to the respective evaporator is particularly expedient and space-saving if, according to a further advantageous embodiment of the subject matter of the invention, it is provided that the valve arrangement is designed as an electromagnetically operated 3/2-way valve, which depends on the temperature is controlled in the various subjects evaluating controller unit.
  • the 3/2-way valve is cyclically switched over when the compartments of different temperature are simultaneously requested for cooling.
  • This solution is characterized in that the equal treatment of the two compartments of different temperatures does not make one of the compartments too warm, while the other is acted upon by refrigerant for cooling it.
  • a household cooling device 10 is shown, the heat-insulated housing 11 of which is closed at its opening by doors 12 and 13 which are attached at the opening edge and can be opened separately. Via the doors 12 and 13, thermally separated compartments of different temperature, not specified, are accessible, the compartment temperature of which is maintained by means of a refrigeration system 14 described below.
  • the refrigeration system 14 has two refrigerant circuits I and II, which are supplied with liquid refrigerant by a common refrigerant compressor 15.
  • the refrigerant compressor 15 is connected on the pressure side in a conventional manner, a condenser 16, the output of which is connected to a dryer cartridge 18 via a line section 17.
  • a line section 19 leads away from the dryer cartridge 18 and opens into a valve arrangement 20 which is designed as an electromagnetically operated, 3/2-way valve.
  • the Valve arrangement 20, like refrigerant compressor 15, is controlled by a controller unit 21, which for this purpose is connected to valve arrangement 20 via an electrical connecting line 22 as well as to compressor 15 via a further electrical line 23.
  • a throttle member 27 arranged in each refrigerant circuit in the form of a spirally wound capillary tube is connected downstream in terms of flow technology. These are each fluidically coupled to the outputs of the valve arrangement via refrigerant lines 28 and 29.
  • the throttle elements 27 are connected to a refrigerant line section 30 or 31, each of which opens at the injection point of an evaporator 32 or 33, which are connected in parallel to one another.
  • Each of the evaporators 32 and 33 is equipped with at least one continuous refrigerant channel 34 and 35, from its injection point to its outlet, for the purpose of its flow through with refrigerant, the channel course of which is arranged in a falling manner and free of siphon-like, liquid refrigerant-retaining structures is.
  • Falling channel course is to be understood here to mean that the refrigerant passes through a height difference in each of the infinitesimally adjacent channel elements of the refrigerant channels 34 and 35.
  • the outputs of the two evaporators 32 and 33 are brought together by a refrigerant line 36 which merges into a refrigerant line section 37.
  • the reservoir 38 is a component of both refrigerant circuits I and II and has an inflow opening 39 and an outflow opening 40 which are arranged offset in height from one another, the inflow opening 39, into which the refrigerant channel 37 opens, being lower than the outflow opening 40 , which is connected via a line piece 41 to the suction side of the refrigerant compressor 15.
  • the difference in height between the inflow and the outflow opening can be generated on the one hand by a tilted position of the reservoir 38, the part of the reservoir 38 on which the inflow opening 39 is arranged being lower.
  • the reservoir 38 can also be arranged horizontally, with the bottom surface lying horizontally, but in this case the inflow opening 39 is arranged closer to the bottom surface of the reservoir 38 than the outflow opening 40 facing the suction side of the refrigerant compressor 15.
  • the evaporator collects in the closed circuit for cooling purposes while it is active
  • the refrigerant in the reservoir 38 acts upon the phase.
  • the collecting function of the reservoir 38 results from a superimposition of the potential difference caused by the height difference between the evaporator outlet and the inflow opening 39 of the reservoir 38 and thus the lowering effect of the reservoir 38 on the liquid refrigerant and the effect achieved. that the refrigerant condenses at the coldest point in the refrigeration cycle, the reservoir 38 being this coldest point due to its embedding in the thermal insulation of the housing 11.
  • the compartment temperature is controlled almost independently of the ambient temperatures. These sensors then provide the criteria for switching the valve arrangement 20 and switching the compressor 15 on and off. Automatic defrosting for the evaporators 32 and 33 is controlled by sensors, not shown, arranged on their surface.

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)
EP19930117883 1992-12-17 1993-11-04 Réfrigérateur à enveloppe thermiquement isolée Expired - Lifetime EP0602371B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924242775 DE4242775A1 (de) 1992-12-17 1992-12-17 Kühlgerät mit einem wärmeisolierten Gehäuse
DE4242775 1992-12-17

Publications (3)

Publication Number Publication Date
EP0602371A2 true EP0602371A2 (fr) 1994-06-22
EP0602371A3 EP0602371A3 (en) 1994-07-27
EP0602371B1 EP0602371B1 (fr) 2001-04-18

Family

ID=6475649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930117883 Expired - Lifetime EP0602371B1 (fr) 1992-12-17 1993-11-04 Réfrigérateur à enveloppe thermiquement isolée

Country Status (5)

Country Link
EP (1) EP0602371B1 (fr)
DE (2) DE4242775A1 (fr)
DK (1) DK0602371T3 (fr)
ES (1) ES2155826T3 (fr)
TR (1) TR27681A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443591A1 (de) * 1994-12-07 1996-06-13 Bosch Siemens Hausgeraete Kältegerät, insbes. Haushaltskältegerät
EP1030133A1 (fr) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Dispositif de refroidissement avec compartiment de réfrigération et de congélation combiné
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
WO2013113552A1 (fr) * 2012-02-01 2013-08-08 BSH Bosch und Siemens Hausgeräte GmbH Appareil réfrigérant à deux compartiments de stockage
US10544979B2 (en) 2016-12-19 2020-01-28 Whirlpool Corporation Appliance and method of controlling the appliance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015165A1 (de) * 2010-04-16 2011-10-20 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922517A1 (de) * 1968-05-02 1969-11-20 Zanussi A Spa Industrie Kaelteerzeugungsanlage fuer zwei Temperaturen
FR2191082A1 (fr) * 1972-06-29 1974-02-01 Vorwerk & Co Elektrowerke Kg
US4840033A (en) * 1988-06-20 1989-06-20 Frick Company Ice builder and control system therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922517A1 (de) * 1968-05-02 1969-11-20 Zanussi A Spa Industrie Kaelteerzeugungsanlage fuer zwei Temperaturen
FR2191082A1 (fr) * 1972-06-29 1974-02-01 Vorwerk & Co Elektrowerke Kg
US4840033A (en) * 1988-06-20 1989-06-20 Frick Company Ice builder and control system therefor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443591A1 (de) * 1994-12-07 1996-06-13 Bosch Siemens Hausgeraete Kältegerät, insbes. Haushaltskältegerät
EP1030133A1 (fr) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Dispositif de refroidissement avec compartiment de réfrigération et de congélation combiné
WO2000049344A1 (fr) * 1999-02-19 2000-08-24 Ranco Incorporated Of Delaware Appareil frigorifique combinant un compartiment refrigerateur et un compartiment congelateur
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
WO2013113552A1 (fr) * 2012-02-01 2013-08-08 BSH Bosch und Siemens Hausgeräte GmbH Appareil réfrigérant à deux compartiments de stockage
CN104094071A (zh) * 2012-02-01 2014-10-08 Bsh博世和西门子家用电器有限公司 具有两个存放室的制冷器具
CN104094071B (zh) * 2012-02-01 2016-08-31 Bsh家用电器有限公司 具有两个存放室的制冷器具
US10544979B2 (en) 2016-12-19 2020-01-28 Whirlpool Corporation Appliance and method of controlling the appliance

Also Published As

Publication number Publication date
DK0602371T3 (da) 2001-08-13
DE59310164D1 (de) 2001-05-23
EP0602371A3 (en) 1994-07-27
EP0602371B1 (fr) 2001-04-18
TR27681A (tr) 1995-06-16
ES2155826T3 (es) 2001-06-01
DE4242775A1 (de) 1994-06-23

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