EP0752563A2 - Arrangement d'évaporateur pour des réfrigérateurs ménagers - Google Patents

Arrangement d'évaporateur pour des réfrigérateurs ménagers Download PDF

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Publication number
EP0752563A2
EP0752563A2 EP96106978A EP96106978A EP0752563A2 EP 0752563 A2 EP0752563 A2 EP 0752563A2 EP 96106978 A EP96106978 A EP 96106978A EP 96106978 A EP96106978 A EP 96106978A EP 0752563 A2 EP0752563 A2 EP 0752563A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
refrigerant
capacity
refrigeration
arrangement
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
EP96106978A
Other languages
German (de)
English (en)
Other versions
EP0752563B1 (fr
EP0752563A3 (fr
Inventor
Friedrich Dipl.-Ing Arnold
Roland Renner
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 EP0752563A2 publication Critical patent/EP0752563A2/fr
Publication of EP0752563A3 publication Critical patent/EP0752563A3/fr
Application granted granted Critical
Publication of EP0752563B1 publication Critical patent/EP0752563B1/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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
    • 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
    • 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 an evaporator arrangement for household refrigeration devices with at least two evaporators, which are located in a closed refrigeration circuit with a refrigerant compressor and have a different refrigeration capacity, the refrigerant channel arrangements of which are connected in series in terms of flow technology, the refrigerant channel arrangement of the evaporator of lower refrigeration capacity being a collector for has liquid refrigerant.
  • a two-temperature refrigerator which is equipped with a plate evaporator for cooling its thermally separated compartments.
  • This has two evaporator sections, which are equipped with a different cooling capacity and are arranged in series in terms of flow technology, which are mechanically connected to one another via a connecting web and which can be acted upon with refrigerant via an injection point arranged on the evaporator section with a lower cooling capacity.
  • the plate evaporator is designed that the refrigerant first flows through the evaporator section of lower refrigeration capacity from the injection point in a refrigerant channel laid in turns and is then fed to the evaporator section of higher refrigeration capacity and from there is returned to the evaporator section of lower refrigeration capacity.
  • it is fed to a sack-like collector for its phase separation, which is connected upstream of an intake manifold connection in the flow direction of the refrigerant.
  • the invention has for its object to improve an evaporator arrangement according to the preamble of claim 1 with respect to the disadvantages of the prior art.
  • the evaporator of lower cooling capacity is downstream of the evaporator of higher cooling capacity in terms of flow technology and the portion of its refrigerant channel arrangement located in the flow direction of the refrigerant driven by the compressor is designed to be volume-optimized.
  • the solution according to the invention is characterized in particular by the fact that the quantity of refrigerant required for performance-optimized operation of the refrigeration device is insensitive to quantity tolerance, so that the refrigeration circuit can be operated even with large fluctuations in the quantity without noticeable loss of performance. Furthermore, it is prevented by the evaporator arrangement according to the invention that liquid refrigerant can get into the intake manifold during the running time of the compressor, where there can then be noise on the one hand and cooling and thus condensation water formation and, as a result, corrosion problems on the intake manifold.
  • the storage compartment cooled by the evaporator with a higher cooling capacity has a significantly more precisely maintained storage temperature if, as is customary with single-circuit cooling systems of this type, indirect temperature control of the colder compartment via the warmer storage compartment is used.
  • Volume-optimized is to be understood here as the production-technically controllable design of the channel cross section of the refrigerant channels or their length-maximized arrangement on a certain evaporator board surface.
  • the volume optimization of the section of the refrigerant channel arrangement of the evaporator of lower evaporating capacity located in front of the collector is generated by the length of the refrigerant channels forming the refrigerant channel arrangement.
  • Such a design of the evaporator with lower cooling capacity creates a particularly simple additional volume for liquid refrigerant, which additionally prevents liquid refrigerant from getting into the intake manifold of the refrigeration circuit during the running time of the compressor and cooling it down, even if a refrigeration circuit of this type is filled with refrigerant up to the upper filling limit.
  • the refrigerant return from the evaporator of lower cooling capacity to the suction side of the compressor is at least largely decoupled thermally from the evaporator of higher cooling capacity.
  • the evaporators are different Cooling capacity are designed as independent, only fluidly interconnected units, the evaporator of lower cooling capacity is arranged in the installed position of the evaporator arrangement above and the inflow of its refrigerant channel arrangement is lower than its outflow.
  • Such a structure of an evaporator arrangement ensures that the liquid refrigerant can pass from the evaporator of lower refrigeration capacity into the evaporator of higher refrigeration capacity when the refrigerant compressor is at a standstill, since, due to the design, no siphon-like refrigerant channel arrangements are necessary in the evaporator of lower refrigeration capacity, so that on the one hand so-called glugging noises rising vapor bubbles that penetrate the liquid refrigerant residues are prevented. On the other hand, so-called re-evaporation of liquid refrigerant residues in the evaporator of lower refrigeration capacity is avoided, so that it can be defrosted more specifically and thus more quickly while the refrigerant compressor is at a standstill.
  • a household refrigeration appliance 10 shown in FIG. 1 is equipped with a heat-insulating housing 12 which can be closed by a door 11 and in which two storage compartments of different temperatures which are thermally separated from one another by a heat-insulating partition plate 13 are arranged.
  • the storage compartment above the partition plate 13 is designed as a normal cooling compartment 14 with intermediate shelves 15 serving as shelves, while the storage compartment arranged below the partition plate 13 serves as a cold storage compartment 16.
  • This is equipped with a plurality of closed-walled containers 17 arranged one above the other, some of which are designed as pull-outs, whose container walls facing the inside of the compartment serve together with these as air guiding devices for the cooling air circulated within the cold storage compartment 16 by a fan (not shown).
  • the cold storage compartment 16 has on its rear side a step-like projection 18, through which a recess 19 accessible from the outside for accommodating a refrigerant compressor 20 is saved in the heat-insulated housing 12.
  • This is used for the forced circulation of refrigerant in a closed refrigeration circuit with two board-like evaporators, which have different cooling capacities and are designed as so-called cold wall evaporators.
  • the evaporator of higher refrigeration capacity 21 is arranged in the cold storage compartment 16 and is equipped with a refrigerant injection point 22, which serves to lower the pressure of the refrigerant flowing to the evaporator 21 from a condenser (not shown) in the refrigeration cycle.
  • the evaporator of higher cooling capacity 21 is designed as a refrigerant channel arrangement 23 serving refrigerant channel arranged in turns on the evaporator board, the outlet end of which is in the installed position of the evaporator arrangement in the refrigeration device 10 above the refrigerant injection point 22 and is connected to a refrigerant line 24.
  • This serves for the fluidic connection of the evaporator of higher refrigeration capacity 21 to the board-like evaporator 25, which, in comparison, is equipped with a lower refrigeration capacity and is arranged in the normal cooling compartment 14 and is connected to the evaporator 21 only via the refrigerant line 24.
  • the evaporator with a lower refrigeration capacity 25 is provided with a refrigerant channel serving as a refrigerant channel arrangement 26, which has one of its inflow openings 27 connected to the refrigerant line 24 and is arranged in closely aligned windings above the height of the evaporator board.
  • the outlet-side end of the refrigerant channel is provided with a horizontal connection piece, bag-shaped refrigerant collector 28, before it opens into a drain opening 29 located higher in the installed position of the evaporator 25, which serves for connection to a suction line, not shown, in the refrigeration circuit.
  • the liquid refrigerant conveyed by it only becomes the evaporator of higher refrigeration capacity arranged first in the series connection of the two evaporators 21 and 25 21 supplied so that it is cooled first. Subsequently, the liquid refrigerant is supplied in series connection to evaporators with a lower cooling capacity 25, so that the latter cools down.
  • the evaporator of lower refrigeration capacity 25 serving to cool the normal refrigeration compartment 14 heats up much faster than the evaporator of higher refrigeration capacity 21 located in the cold storage compartment 16, as a result of which the liquid refrigerant accumulated in the refrigerant collector 28 evaporates very quickly and partly in the evaporator of higher refrigeration capacity 21 condensed.
  • the refrigerant located in the refrigerant channel arrangement 26 of the evaporator 25 after the refrigerant compressor 20 has been switched off is fed by the action of gravity on the refrigerant to the evaporator of higher refrigeration capacity arranged underneath in the installed position of the evaporator arrangement.
  • the invention can also be applied to an evaporator board in which an evaporator section of higher refrigeration capacity is connected via a connecting web to an evaporator section of lower refrigeration capacity, the return of the refrigerant from the evaporator section of lower refrigeration capacity not via the evaporator section of higher refrigeration capacity.

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)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP19960106978 1995-07-07 1996-05-03 Arrangement d'évaporateur pour des réfrigérateurs ménagers Expired - Lifetime EP0752563B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995124840 DE19524840A1 (de) 1995-07-07 1995-07-07 Verdampferanordnung für Haushalts-Kältegeräte
DE29524840U 1995-07-07

Publications (3)

Publication Number Publication Date
EP0752563A2 true EP0752563A2 (fr) 1997-01-08
EP0752563A3 EP0752563A3 (fr) 1999-10-20
EP0752563B1 EP0752563B1 (fr) 2003-12-03

Family

ID=7766301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960106978 Expired - Lifetime EP0752563B1 (fr) 1995-07-07 1996-05-03 Arrangement d'évaporateur pour des réfrigérateurs ménagers

Country Status (4)

Country Link
EP (1) EP0752563B1 (fr)
DE (2) DE19524840A1 (fr)
ES (1) ES2211922T3 (fr)
TR (1) TR199600556A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000014459A1 (fr) * 1998-09-04 2000-03-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif evaporateur
WO2001040721A1 (fr) * 1999-11-30 2001-06-07 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique
WO2002035162A1 (fr) * 2000-10-27 2002-05-02 BSH Bosch und Siemens Hausgeräte GmbH Evaporateur et appareil frigorifique pour melange refrigerant zeotrope
KR100463511B1 (ko) * 1998-01-14 2005-04-06 엘지전자 주식회사 두 개의 증발기가 구비된 냉장고
CN104654646A (zh) * 2015-01-23 2015-05-27 青岛海尔股份有限公司 可逆直冷系统、冰箱及制冷控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769319A (en) * 1952-02-18 1956-11-06 Whirlpool Seeger Corp Two temperature household refrigerators
US2807149A (en) * 1955-07-15 1957-09-24 Whirlpool Seeger Corp Cycle defrost type refrigerators
US3009338A (en) * 1959-10-01 1961-11-21 Westinghouse Electric Corp Refrigeration apparatus
DE2039246A1 (de) * 1970-08-07 1972-02-10 Bosch Hausgeraete Gmbh Kuehlschrank,insbesondere Zweitemperaturen-Kuehlschrank
EP0178226A1 (fr) * 1984-10-05 1986-04-16 Societe D'electromenager Du Nord Selnor Armoire frigorifique à deux compartiments .
DE3703902A1 (de) * 1987-02-09 1988-08-18 Liebherr Hausgeraete Plattenverdampfer fuer kuehl- und gefriergeraete

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769319A (en) * 1952-02-18 1956-11-06 Whirlpool Seeger Corp Two temperature household refrigerators
US2807149A (en) * 1955-07-15 1957-09-24 Whirlpool Seeger Corp Cycle defrost type refrigerators
US3009338A (en) * 1959-10-01 1961-11-21 Westinghouse Electric Corp Refrigeration apparatus
DE2039246A1 (de) * 1970-08-07 1972-02-10 Bosch Hausgeraete Gmbh Kuehlschrank,insbesondere Zweitemperaturen-Kuehlschrank
EP0178226A1 (fr) * 1984-10-05 1986-04-16 Societe D'electromenager Du Nord Selnor Armoire frigorifique à deux compartiments .
DE3703902A1 (de) * 1987-02-09 1988-08-18 Liebherr Hausgeraete Plattenverdampfer fuer kuehl- und gefriergeraete

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463511B1 (ko) * 1998-01-14 2005-04-06 엘지전자 주식회사 두 개의 증발기가 구비된 냉장고
WO2000014459A1 (fr) * 1998-09-04 2000-03-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif evaporateur
WO2001040721A1 (fr) * 1999-11-30 2001-06-07 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique
WO2002035162A1 (fr) * 2000-10-27 2002-05-02 BSH Bosch und Siemens Hausgeräte GmbH Evaporateur et appareil frigorifique pour melange refrigerant zeotrope
CN104654646A (zh) * 2015-01-23 2015-05-27 青岛海尔股份有限公司 可逆直冷系统、冰箱及制冷控制方法
CN104654646B (zh) * 2015-01-23 2017-04-05 青岛海尔股份有限公司 可逆直冷系统的制冷控制方法

Also Published As

Publication number Publication date
ES2211922T3 (es) 2004-07-16
EP0752563B1 (fr) 2003-12-03
EP0752563A3 (fr) 1999-10-20
TR199600556A2 (tr) 1997-01-21
DE59610842D1 (de) 2004-01-15
DE19524840A1 (de) 1997-01-09

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