EP2376852A2 - Kältegerät mit mehreren fächern - Google Patents
Kältegerät mit mehreren fächernInfo
- Publication number
- EP2376852A2 EP2376852A2 EP09751920A EP09751920A EP2376852A2 EP 2376852 A2 EP2376852 A2 EP 2376852A2 EP 09751920 A EP09751920 A EP 09751920A EP 09751920 A EP09751920 A EP 09751920A EP 2376852 A2 EP2376852 A2 EP 2376852A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- branch
- evaporator
- compartment
- appliance 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
Links
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
- Refrigeration unit with several compartments
- the present invention relates to a refrigerator, in particular a domestic refrigerator, with at least two designed for different storage temperatures subjects.
- a refrigerator in particular a domestic refrigerator
- Such devices also referred to as combination refrigerators, generally have a standard refrigerated compartment and a freezer compartment;
- a zero-degree compartment or a basement compartment may be present.
- each associated with one of the compartments are connected in series in a refrigerant circuit.
- the distribution of the cooling capacity on the compartments is fixed by the type of device and is dependent, for example, on the order of the evaporators in the refrigerant circuit and their relative sizes. If the cooling capacity distribution corresponds to the refrigeration demand of the compartments, usable temperatures set in several compartments, even if a regulation of the refrigerant circuit is possible only on the basis of the measured temperature in one of the compartments. However, if, for example due to unusual ambient temperatures, the ratio of refrigeration demand of the compartments shifts, this leads to insufficient or excessive refrigeration of a compartment.
- the evaporator of the normal refrigeration compartment is arranged upstream of that of the freezer compartment.
- Refrigerant which evaporates in a stagnation phase of the circuit in the evaporator of the normal refrigeration compartment, displaces colder refrigerant in the freezer compartment evaporator downstream, and there is an undesirable heat input into the freezer compartment.
- Object of the present invention is to provide a refrigerator with at least two designed for different storage temperatures subjects in which an independent cooling of the compartments with good efficiency with a simple design refrigerant circuit can be achieved.
- the object is achieved by comprising in a refrigerator with at least two compartments and a branched refrigerant circuit, of which a first branch is passed through an evaporator of the warmer compartment and a second branch via an evaporator of the colder compartment, the evaporator of the colder compartment comprises two refrigerant pipes of which a first in the first branch is upstream of the evaporator of the warmer compartment, whereas the second line belongs to the second branch.
- This structure makes it possible to apply refrigerant to the second branch only if an application of the first branch would lead to an undercooling of the warmer compartment.
- this reduces the frequency with which the second branch is supplied with refrigerant and, as a result, liquid refrigerant can remain in the evaporator after the end of the charging, and secondly That is, since the second branch need only be used when there is a risk of undercooling the warmer compartment, there is little likelihood that there will be a shortage of refrigeration in the warmer compartment after the second branch has been pressurized, and only a sub-optimal amount of refrigerant to pressurize the first branch is available.
- the volume of the second branch is preferably set smaller than that of the first one.
- the volume of the second branch is selected to be greater than that of the first branch. This cools the colder compartment much faster.
- the refrigerant circuit can not work properly and there is a risk that it will be damaged. Therefore, it is expedient in a low pressure region of
- Refrigerant circuit provided a refrigerant reservoir to intercept any liquid refrigerant before reaching the compressor.
- the refrigerant reservoir is disposed downstream of a confluence of the two branches, so that any liquid refrigerant collected therein may be evaporated and recirculated even if refrigerant circulates only in the first but not in the second branch.
- the refrigerant reservoir is flowed through in ascending direction, so that stored therein refrigerant can not escape in liquid form.
- the two lines are preferably evenly distributed over the surface of the evaporator of the colder compartment to achieve a uniform cooling effect, regardless of whether the evaporator is cooled by circulating in the first or in the second branch refrigerant.
- both branches each have a throttle point.
- a valve for selectively charging the two branches with refrigerant may be disposed in a high-pressure area of the refrigerant cycle, and a compact and inexpensive valve having a small passage area may be used.
- the length of the first refrigerant line at the evaporator of the colder compartment is shorter than the length of the second refrigerant line or the same length as the second refrigerant line dimensioned.
- Fig. 1 is a schematic representation of a refrigerant circuit in a combination refrigerator.
- Fig. 1 shows a highly schematic front view of the body 1 of a refrigerator with a freezer compartment 2 and an overlying normal cooling compartment 3.
- evaporators 4, 5 are arranged, of which in the normal cooling compartment (3) provided evaporator (5) formed as a plate evaporator and is arranged on the cooling compartment rear wall, while in the freezer compartment (2) arranged evaporator (4), for example can be designed as a fin evaporator.
- the evaporators 4, 5 are connected in a refrigerant circuit, which further comprises a compressor 6, a condenser 7, a directional control valve 8, two capillaries 9, 10 and a steam dome 11.
- a first branch 15 comprises the capillary 9, a line 16 on the evaporator 4 of the freezer compartment 2 and, downstream of this, a line 17 on the evaporator 5 of the normal cooling compartment 3.
- the second branch 18 comprises the capillary 10 and a line 19 the evaporator 4. At a point 20 upstream of the steam dome 1 1, the two branches meet again.
- the two lines 16, 19 of the evaporator 4 are approximately the same length and extend substantially side by side over the entire surface of the evaporator 4, so that this is substantially uniformly cooled, no matter on which of the two branches 15, 18 refrigerant circulates.
- a control circuit 12 controls the operation of the compressor 6 and the directional control valve 8 on the basis of two sensors 13, 14 in the compartments 2, 3 detected temperatures. For both compartments 2, 3, an interval is specified in each case in which the measured temperatures must move. If the measured temperature is above the interval in one of the compartments, the compressor 6 is started.
- the directional control valve 8 is driven to supply the branch 15 with refrigerant. Since the volume of the branch 18 is small compared to that of the branch 15, at most a small amount of liquid refrigerant may be stored in the branch 18 at that time. The proportion of the circulating refrigerant in the entire contents of the refrigerant circuit is therefore high, and accordingly, a high pressure at the outlet of the compressor 6 can be achieved, which enables a cooling operation with good efficiency.
- the control circuit 12 switches the directional control valve 8, so that only the freezer compartment evaporator 4 is acted upon by the branch 18 with refrigerant. Since the flow rate of the compressor 6 is designed to supply sufficient refrigerant so that when the branch 15 is acted upon, an amount of liquid refrigerant sufficient to cool the normal cooling compartment 3 reaches the evaporator 5, it is easy to see that it is not on the way across the branch 18 all refrigerant in line 19 evaporates.
- the steam dome 11 can be easily realized in the form of a rising pipe section, which is more spacious than adjoining sections of the refrigerant pipe, so that gaseous refrigerant entering from below into the steam dome 1 1 will bubble through any liquid refrigerant contained therein and at an upper end can escape again without entrain the liquid refrigerant.
- the steam dome 1 1 is arranged thermally insulated, so that passing refrigerant from the evaporator 5 is the main heat source that provides heat of evaporation for stored liquid refrigerant.
- the temperature in the normal refrigeration compartment 3 rises above the upper limit of the permissible interval, while the temperature in the freezer compartment 2 is within the permissible interval.
- cooling of the normal cooling compartment 3 without simultaneous cooling of the freezer compartment with the refrigerant circuit shown in Fig. 1 is not possible.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 (2)
Publication Number | Publication Date |
---|---|
EP2376852A2 true EP2376852A2 (de) | 2011-10-19 |
EP2376852B1 EP2376852B1 (de) | 2014-05-14 |
Family
ID=42145221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09751920.1A Active EP2376852B1 (de) | 2008-12-02 | 2009-11-13 | Kältegerät mit mehreren fächern |
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) |
Families Citing this family (4)
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 |
EP3430329A1 (de) * | 2016-03-16 | 2019-01-23 | Liebherr-Hausgeräte Lienz GmbH | Kühl- und/oder gefriergerät |
WO2018001504A1 (en) | 2016-07-01 | 2018-01-04 | Arcelik Anonim Sirketi | Refrigeration appliance having a heat exchange circuit with improved thermal performance |
KR20200065692A (ko) * | 2018-11-30 | 2020-06-09 | 삼성전자주식회사 | 냉장고 및 그 제어 방법 |
Family Cites Families (11)
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 |
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 |
DE19957719A1 (de) * | 1999-11-30 | 2001-05-31 | Bsh Bosch Siemens Hausgeraete | Kältegerät |
JP3870048B2 (ja) * | 2001-03-26 | 2007-01-17 | 三星電子株式会社 | マルチルーム型冷蔵庫及びその制御方法 |
ITTO20030991A1 (it) * | 2003-12-11 | 2005-06-12 | Merloni Elettrodomestici Spa | Apparecchio refrigerante. |
US20060130513A1 (en) * | 2004-12-22 | 2006-06-22 | Samsung Electronics Co., Ltd. | Refrigerator |
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 |
-
2008
- 2008-12-02 DE DE102008044289A patent/DE102008044289A1/de not_active Withdrawn
-
2009
- 2009-11-13 US US13/129,588 patent/US20110219806A1/en not_active Abandoned
- 2009-11-13 EA EA201170729A patent/EA017961B1/ru not_active IP Right Cessation
- 2009-11-13 KR KR1020117012533A patent/KR20110103943A/ko not_active Application Discontinuation
- 2009-11-13 JP JP2011538926A patent/JP2012510603A/ja not_active Withdrawn
- 2009-11-13 CN CN200980148538.4A patent/CN102239375B/zh not_active Expired - Fee Related
- 2009-11-13 EP EP09751920.1A patent/EP2376852B1/de active Active
- 2009-11-13 WO PCT/EP2009/065133 patent/WO2010063551A2/de active Application Filing
- 2009-11-13 ES ES09751920.1T patent/ES2467670T3/es active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010063551A2 * |
Also Published As
Publication number | Publication date |
---|---|
EA017961B1 (ru) | 2013-04-30 |
DE102008044289A1 (de) | 2010-06-10 |
WO2010063551A2 (de) | 2010-06-10 |
ES2467670T3 (es) | 2014-06-12 |
KR20110103943A (ko) | 2011-09-21 |
CN102239375A (zh) | 2011-11-09 |
CN102239375B (zh) | 2014-03-19 |
EP2376852B1 (de) | 2014-05-14 |
WO2010063551A3 (de) | 2011-02-24 |
JP2012510603A (ja) | 2012-05-10 |
US20110219806A1 (en) | 2011-09-15 |
EA201170729A1 (ru) | 2012-01-30 |
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