US20110219806A1 - Refrigeration appliance comprising a plurality of shelves - Google Patents

Refrigeration appliance comprising a plurality of shelves Download PDF

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Publication number
US20110219806A1
US20110219806A1 US13/129,588 US200913129588A US2011219806A1 US 20110219806 A1 US20110219806 A1 US 20110219806A1 US 200913129588 A US200913129588 A US 200913129588A US 2011219806 A1 US2011219806 A1 US 2011219806A1
Authority
US
United States
Prior art keywords
compartment
refrigerant
branch
evaporator
refrigeration appliance
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.)
Abandoned
Application number
US13/129,588
Other languages
English (en)
Inventor
Wolfgang Nuiding
Simon Schechinger
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
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Assigned to BSH BOSCH UND SIEMENS HAUSGERAETE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERAETE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NUIDING, WOLFGANG, SCHECHINGER, SIMON
Publication of US20110219806A1 publication Critical patent/US20110219806A1/en
Abandoned 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
    • 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
    • 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
    • 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
    • F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment

Definitions

  • the present invention relates to a refrigeration appliance, in particular a domestic refrigerator, comprising at least two compartments designed for different storage temperatures.
  • a refrigeration appliance in particular a domestic refrigerator, comprising at least two compartments designed for different storage temperatures.
  • Such appliances also known as fridge/freezers, generally have a normal refrigeration compartment and a freezer compartment; a zero degree compartment or cold-storage compartment, for example, may also be present.
  • evaporators assigned to respective compartments are connected in series in a refrigerant circuit.
  • the distribution of refrigerating power to the compartments is fixed by the design of the appliance and is e.g. dependent on the order of the evaporators in the refrigerant circuit and their relative sizes. If the refrigerating power distribution corresponds to the refrigeration requirement of the compartments, usable temperatures are attained in a plurality of compartments even if refrigerant circuit control is only possible on the basis of the temperature measured in one of the compartments. However, if—e.g. because of unusual ambient temperatures—the ratio of the refrigeration requirement of the compartments shifts, this will result in inadequate or excessive cooling of the compartment.
  • the evaporator of the normal refrigeration compartment is usually disposed upstream of that of the freezer compartment.
  • Refrigerant which evaporates in the evaporator of the normal refrigeration compartment in an idle phase of the circuit forces colder refrigerant in the freezer compartment evaporator downstream, resulting in unwanted heat input to the freezer compartment.
  • the object of the present invention is to create a refrigeration appliance having at least two compartments designed for different storage temperatures, whereby independent cooling of the compartments can be achieved with good efficiency using a refrigerant circuit of simple design.
  • this object is achieved by the evaporator of the colder compartment comprising two refrigerant conduits, a first of which in the first branch is connected upstream of the evaporator of the warmer compartment, whereas the second conduit is associated with the second branch.
  • This design makes it possible for refrigerant to be applied to the second branch only if applying refrigerant to the first branch would result in undercooling of the warmer compartment. On the one hand, this reduces the frequency with which refrigerant is applied to the second branch and as a result of which liquid refrigerant may remain in the evaporator at the end of the said application; on the other hand, as the second branch only needs to be used when there is a risk of undercooling of the warmer compartment, there is low probability of cooling being required in the warmer compartment shortly after refrigerant is applied to the second branch and of only a suboptimal amount of refrigerant being available for application to the first branch.
  • the volume of the second branch is preferably selected smaller than that of the first.
  • the volume of the second branch is selected greater than that of the first branch.
  • the problem may arise that refrigerant does not evaporate completely as it passes through the second branch. If liquid refrigerant reaches the compressor of the refrigerant circuit, it cannot operate correctly and there is a risk of it being damaged.
  • a refrigerant reservoir is therefore expediently provided in a low pressure region of the refrigerant circuit in order to catch any liquid refrigerant before it reaches the compressor.
  • the refrigerant reservoir is preferably disposed downstream of a junction of the two branches, so that liquid refrigerant that has possibly collected therein can be evaporated and returned to the circuit even if refrigerant is circulating only in the first, but not in the second branch.
  • the refrigerant reservoir is preferably flowed through in a rising direction, so that refrigerant stored therein cannot escape in liquid form.
  • the two conduits are preferably distributed evenly over the surface of the evaporator of the colder compartment in order to achieve a uniform cooling effect, regardless of whether the evaporator is cooled by refrigerant circulating in the first or in the second branch.
  • the two branches preferably each have a throttle point.
  • a valve for applying refrigerant to either of the two branches can be disposed in a high pressure region of the refrigerant circuit, and a compact and inexpensive valve with a small flow cross section can be used.
  • the length of the first refrigerant conduit on the evaporator of the colder compartment is preferably calculated shorter than the length of the second refrigerant conduit or of the same length as the second refrigerant conduit.
  • FIG. 1 schematically illustrates a refrigerant circuit in a fridge-freezer.
  • FIG. 1 shows a highly schematized front view of the carcass 1 of a refrigeration appliance comprising a freezer compartment 2 located below a normal refrigeration compartment 3 .
  • evaporators 4 , 5 Disposed in both compartments 2 , 3 are evaporators 4 , 5 , the evaporator ( 5 ) provided in the normal refrigeration compartment ( 3 ) being implemented as a plate-type evaporator and disposed on the back wall of said refrigeration compartment, while the evaporator ( 4 ) disposed in the freezer compartment ( 2 ) can be implemented e.g. as a finned-type evaporator.
  • the evaporators 4 , 5 are connected into a refrigerant circuit additionally comprising a compressor 6 , a condenser 7 , a directional valve 8 , two capillaries 9 , 10 and a vapor dome 11 .
  • the refrigerant circuit forks into two branches.
  • a first branch 15 comprises the capillary 9 , a conduit 16 on the evaporator 4 of the freezer compartment 2 and, adjoining thereto downstream, a conduit 17 on the evaporator 5 of the normal refrigeration compartment 3 .
  • the second branch 18 comprises the capillary 10 and a conduit 19 on the evaporator 4 .
  • the two branches meet again at a point 20 upstream of the vapor dome 11 .
  • the two conduits 16 , 19 of the evaporator 4 are approximately of the same length and run essentially side by side over the entire surface area of the evaporator 4 , so that the latter is essentially uniformly cooled, regardless of which of the two branches 15 , 18 has refrigerant circulating.
  • a control circuit 12 controls the operation of the compressor 6 and of the directional valve 8 on the basis of temperatures detected by means of two sensors 13 , 14 in the compartments 2 , 3 .
  • the compressor 6 is turned on because the temperature measured in the freezer compartment 2 is above the upper limit of the permissible range. If at the same time the temperature measured in the normal refrigeration compartment is within the permissible range, the directional valve 8 is actuated in order to supply the branch 15 with refrigerant. As the volume of the branch 18 is small compared to that of the branch 15 , at best a small amount of liquid refrigerant can be stored in the branch 18 at this time. The circulating refrigerant as a proportion of the contents of the refrigerant circuit is therefore high, and, accordingly, a high pressure can be achieved at the output of the compressor 6 , which enables highly efficient cooling to take place.
  • Any liquid refrigerant stored in the vapor dome 11 when the compressor 6 is started up is heated by through-flowing warm, gaseous refrigerant from the evaporator 5 so that it likewise evaporates and is available to the circuit shortly after the compressor 6 is activated.
  • the normal refrigeration compartment 3 As the refrigerant circulates through both evaporators 4 , 5 , the normal refrigeration compartment 3 is also cooled. If its temperature reaches the lower limit of its permissible range before this occurs in the freezer compartment 2 , the control circuit 12 switches over the directional valve 8 so that refrigerant is applied only to the freezer compartment evaporator 4 via the branch 18 . As the flow rate of the compressor 6 is designed to supply enough refrigerant to ensure that sufficient liquid refrigerant to cool the normal refrigeration compartment 3 reaches the evaporator 5 when refrigerant is applied to the branch 15 , it can be easily understood that not all refrigerant in the conduit 19 evaporates as it passes via the branch 18 .
  • the vapor dome 11 can be simply implemented in the form of a rising tube section that is more capacious than adjoining refrigerant conduit sections, so that gaseous refrigerant entering the vapor dome 11 from below can bubble through any liquid refrigerant contained therein and exit again at an upper end without entraining the liquid refrigerant.
  • the vapor dome 11 is disposed in a thermally insulated manner so that refrigerant passing through it from the evaporator 5 is the main source of evaporation heat for stored liquid 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)
US13/129,588 2008-12-02 2009-11-13 Refrigeration appliance comprising a plurality of shelves Abandoned US20110219806A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008044289.5 2008-12-02
DE102008044289A DE102008044289A1 (de) 2008-12-02 2008-12-02 Kältegerät mit mehreren Fächern
PCT/EP2009/065133 WO2010063551A2 (de) 2008-12-02 2009-11-13 Kältegerät mit mehreren fächern

Publications (1)

Publication Number Publication Date
US20110219806A1 true US20110219806A1 (en) 2011-09-15

Family

ID=42145221

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/129,588 Abandoned US20110219806A1 (en) 2008-12-02 2009-11-13 Refrigeration appliance comprising a plurality of shelves

Country Status (9)

Country Link
US (1) US20110219806A1 (de)
EP (1) EP2376852B1 (de)
JP (1) JP2012510603A (de)
KR (1) KR20110103943A (de)
CN (1) CN102239375B (de)
DE (1) DE102008044289A1 (de)
EA (1) EA017961B1 (de)
ES (1) ES2467670T3 (de)
WO (1) WO2010063551A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190049164A1 (en) * 2016-03-16 2019-02-14 Liebherr-Hausgerate Lienz Gmbh Refrigerator And/Or Freezer Device
US20220018590A1 (en) * 2018-11-30 2022-01-20 Samsung Electronics Co., Ltd. Refrigerator and method of controlling the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012201399A1 (de) * 2012-02-01 2013-08-01 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit zwei Lagerkammern
WO2018001504A1 (en) 2016-07-01 2018-01-04 Arcelik Anonim Sirketi Refrigeration appliance having a heat exchange circuit with improved thermal performance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512869A (en) * 1948-04-24 1950-06-27 James C Mcbroom Method and apparatus for circulating refrigerants
US2539908A (en) * 1948-05-19 1951-01-30 Seeger Refrigerator Co Multiple temperature refrigerating system
US3638447A (en) * 1968-09-27 1972-02-01 Hitachi Ltd Refrigerator with capillary control means
US20020134096A1 (en) * 2001-03-26 2002-09-26 Yong-Bo Shim Multi-compartment type refrigerator and method for controlling the same
US20030000241A1 (en) * 1999-11-30 2003-01-02 Walter Holz Refrigerator
US20060130513A1 (en) * 2004-12-22 2006-06-22 Samsung Electronics Co., Ltd. Refrigerator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3456905B2 (ja) * 1998-09-18 2003-10-14 株式会社東芝 冷蔵庫
KR20000055341A (ko) * 1999-02-05 2000-09-05 윤종용 인터쿨러 냉장고의 제어방법
ITTO20030991A1 (it) * 2003-12-11 2005-06-12 Merloni Elettrodomestici Spa Apparecchio refrigerante.
CN101113848A (zh) * 2006-07-28 2008-01-30 泰州乐金电子冷机有限公司 减少冷媒噪音的冰箱的冷冻循环的控制方法
DE102007016849A1 (de) * 2007-04-10 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit drei Temperaturzonen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512869A (en) * 1948-04-24 1950-06-27 James C Mcbroom Method and apparatus for circulating refrigerants
US2539908A (en) * 1948-05-19 1951-01-30 Seeger Refrigerator Co Multiple temperature refrigerating system
US3638447A (en) * 1968-09-27 1972-02-01 Hitachi Ltd Refrigerator with capillary control means
US20030000241A1 (en) * 1999-11-30 2003-01-02 Walter Holz Refrigerator
US20020134096A1 (en) * 2001-03-26 2002-09-26 Yong-Bo Shim Multi-compartment type refrigerator and method for controlling the same
US20060130513A1 (en) * 2004-12-22 2006-06-22 Samsung Electronics Co., Ltd. Refrigerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190049164A1 (en) * 2016-03-16 2019-02-14 Liebherr-Hausgerate Lienz Gmbh Refrigerator And/Or Freezer Device
US20220018590A1 (en) * 2018-11-30 2022-01-20 Samsung Electronics Co., Ltd. Refrigerator and method of controlling the same

Also Published As

Publication number Publication date
KR20110103943A (ko) 2011-09-21
EP2376852A2 (de) 2011-10-19
WO2010063551A2 (de) 2010-06-10
DE102008044289A1 (de) 2010-06-10
CN102239375A (zh) 2011-11-09
EP2376852B1 (de) 2014-05-14
EA201170729A1 (ru) 2012-01-30
JP2012510603A (ja) 2012-05-10
CN102239375B (zh) 2014-03-19
WO2010063551A3 (de) 2011-02-24
EA017961B1 (ru) 2013-04-30
ES2467670T3 (es) 2014-06-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NUIDING, WOLFGANG;SCHECHINGER, SIMON;REEL/FRAME:026290/0080

Effective date: 20110511

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION