EP2132499A1 - Refrigeration device comprising coolant conduits that are connected in parallel in the heat exchanger - Google Patents
Refrigeration device comprising coolant conduits that are connected in parallel in the heat exchangerInfo
- Publication number
- EP2132499A1 EP2132499A1 EP08736031A EP08736031A EP2132499A1 EP 2132499 A1 EP2132499 A1 EP 2132499A1 EP 08736031 A EP08736031 A EP 08736031A EP 08736031 A EP08736031 A EP 08736031A EP 2132499 A1 EP2132499 A1 EP 2132499A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- coolant
- cooling
- refrigerating appliance
- evaporator
- 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.)
- Withdrawn
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
- 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
- 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
- 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
Definitions
- Refrigeration unit with parallel coolant lines in the heat exchanger
- the invention relates to a refrigeration device comprising a cooling circuit with a circulating coolant therein for cooling at least one cooling compartment, wherein the cooling circuit has at least one heat exchanger.
- a refrigerator is an electrical or gas powered device that provides a refrigerated interior for storing refrigerated goods.
- the temperatures in the interior are usually above 0 0 C, for example, between +2 0 C and +12 0 C.
- a freezer is a corresponding device for storing frozen food and has an interior with temperatures below 0 0 C, for example between -25 0 C and -4 0 C, up.
- Refrigerator and freezer combinations have at least two internal spaces or two separate areas for the different temperature ranges.
- Such refrigerators have a cooling circuit for cooling the respective interior.
- the cooling circuit absorbs the heat in the interior space via a heat exchanger which is thermally coupled to it and discharges it to the environment by means of a second heat exchanger.
- a refrigeration cycle may include a variety of components, such as a condenser, an evaporator, valves, flow resistors, and refrigerant lines.
- an evaporator In the so-called no-frost devices, an evaporator is used, which is arranged separately from a cooling compartment receiving the refrigerated compartment in a separate compartment and there generates cooling air, with which the interior is cooled. Lamella evaporators are often used for this purpose.
- Lamella evaporators have a continuous evaporator tube, which extends from the evaporator inlet to the evaporator outlet.
- a corresponding time is required depending on the size of the evaporator and the volume of the tube, and only with a certain delay does the evaporator reach the desired cooling temperature at the evaporator outlet.
- the evaporator achieves its maximum cooling performance only after a certain delay time.
- the refrigerator according to the invention comprises a cooling circuit with a circulating coolant therein for cooling at least one cooling compartment, wherein the cooling circuit has a heat exchanger with a coolant line, wherein the heat exchanger has at least two parallel-connected coolant lines.
- the time for the complete admission of the heat exchanger with coolant is shortened.
- the coolant stream is divided in the cooling circuit at the entrance of the heat exchanger into two or more separate areas of the heat exchanger and then guided in parallel in separate coolant lines.
- the flow resistance of the parallel-connected refrigerant pipes is only one quarter of the flow resistance of the conventional heat exchanger with a single long one coolant line.
- More than two coolant lines can be connected in parallel, e.g. 3 to 5 coolant lines. They can be connected in parallel over their entire length or can be subdivided and interconnected by connecting lines.
- the coolant lines are extruded.
- viscous, curable materials such as metals
- the material is first melted, optionally homogenized and pressed with the aid of an extruder under high pressure through the nozzle. After leaving the nozzle, the material solidifies with suitable cooling and solidifies.
- a cross-sectional shape of the extruded material can be specified. In particular, allows the extrusion process in cross section to produce any shaped hollow sections.
- cooling circuits can be realized with an optimum ratio of inner volume to outer surface.
- the surface area of the coolant line can be increased while the internal cross-sectional area through which the coolant flows is reduced. An unnecessarily large amount of coolant in the coolant line is avoided and the surface for receiving or dispensing Heat increases. This allows a particularly efficient heat transfer.
- the heat exchanger is a condenser.
- the heat exchanger is an evaporator.
- the evaporator can be arranged outside the refrigerating compartment.
- the evaporator is a finned evaporator.
- the coolant conduits may be aluminum, an aluminum alloy, copper, a copper alloy, magnesium, or a magnesium alloy.
- the coolant lines are connected to one another by heat exchange elements, in particular by cooling fins, by cooling fins or by cooling wires.
- heat exchange elements relevant for the heat transfer or heat absorption surface is increased and thus reduces the heat transfer resistance of the heat exchanger, thus making a heat transfer more effective.
- the length of the parallel circuit at least 50%, in particular at least 75%, for example, at least 90% of the length of the flow path of the coolant in the heat exchanger. If the heat exchanger is divided into several parts and has a plurality of heat exchanger parts, this refers to the ratio between the length of the parallel circuit and the flow path to the entire flow path of the coolant through the plurality of heat exchanger parts. With such lengths, the total flow resistance of the heat exchanger is lowered significantly and thus the efficiency or the efficiency of the heat exchanger is significantly improved.
- the parallel-connected coolant lines can have the same flow cross-section.
- the heat exchanger has at least two heat exchanger inlets.
- the lengths of the coolant lines in the heat exchanger deviate less than 20%, in particular less than 10% from each other.
- FIG. 1 shows an embodiment of a schematically illustrated refrigerating appliance according to the invention in cross-section from the side;
- FIG. 2 shows a cooling circuit of the refrigerating appliance according to FIG. 1;
- Fig. 4 shows a first embodiment of the heat exchanger of the refrigerator after
- FIG. 5 shows a second embodiment of the heat exchanger of the refrigerating appliance according to FIG. 1.
- Fig. 1 shows an embodiment of a refrigeration device 1 in cross-section from the side with a housing 18, a cooling compartment 3 for receiving refrigerated goods 19 and a door 12th
- the refrigeration device 1 has a cooling circuit 2 with a compressor 17 for compressing a coolant circulating in the cooling circuit 2, with a condenser for liquefying the coolant with release of heat to the environment and with an evaporator 7 for evaporating the coolant and for generating cold for cooling the cooling compartment 3.
- the compressor 17, the condenser 6 and the evaporator 7 are fluidly connected to each other by cooling circuit lines 2.
- the condenser 6 and the evaporator 7 are heat exchangers 4, with which heat can be absorbed or released.
- the evaporator 7 is arranged outside the cooling compartment 3 a separate compartment.
- the evaporator 7 cools the refrigerating compartment 3 by cooling air which is supplied to the refrigerating compartment 3 via flow channels (not shown)
- FIG. 2 shows a cooling circuit 2 of the refrigeration device 1 according to FIG. 1 with a condenser 6, a dryer 14, a throttle 13, a condenser 6, a steam dome 16 and a a compressor 17, which are in fluid communication in this order.
- the coolant With the help of the throttle 13 and the compressor 17, the coolant is compressed and thereby resulting heat is discharged with the condenser 6 to the environment, wherein the coolant liquefies.
- the condenser 2 has a parallel circuit 10 of the coolant lines 5, 23 contained therein (see FIGS. 3 to 5). With the aid of a vapor dome 16, a gaseous phase of the coolant is separated from a liquid phase and fed via a suction pipe 15 to the compressor 17 for further compression.
- Fig. 3 shows a known evaporator 7 with a first heat exchanger inlet 21 and a first heat exchanger outlet 22 and with a single continuous first coolant line 5.
- Cooling fins 9 are attached as heat exchange elements 8 to the coolant line 5 to those relevant to the heat or the cooling release To increase surface thus reducing the heat / cold transmission resistance.
- the heat exchanger 4 shows an example of a heat exchanger 4 of an embodiment for a refrigeration appliance 1 according to the invention, such as e.g. 1, with a first coolant line 5 and a second coolant line 23, which are connected in parallel by means of a parallel circuit 10.
- the heat exchanger 4 is designed as an evaporator 7.
- the heat exchanger 4 has two heat exchanger inlets, namely a first heat exchanger inlet 21 and a second heat exchanger inlet 24, and two heat exchanger outlets, namely a first heat exchanger outlet 22 and a second heat exchanger outlet 25.
- Both heat exchanger inlets 21 and 24 are formed as injection points for lowering the refrigerant pressure.
- the subsequent to the injection points 21 and 24 power lengths of the coolant lines 5 and 23 are formed in the same embodiment in the present embodiment. It is also possible to dimension the cable lengths differently.
- the two coolant lines 5, 23 are connected by heat exchange elements 8 to increase the effective surface for the heat dissipation.
- the heat exchange elements 8 are configured as cooling ribs 9.
- the flow resistance of the heat exchanger 4 is considerably reduced and thus the efficiency of the heat exchanger is improved.
- This proves to be particularly advantageous in the evaporator, since the liquid refrigerant flowing in the evaporator can evaporate so against a lower internal pressure and thus generates more cold or actually vaporizes a larger proportion of the liquid coolant. As a result, the efficiency of the evaporator is improved.
- FIG. 5 shows a further embodiment of a heat exchanger 4 of a refrigeration device 1, wherein the first coolant line 5 and the second coolant line 23 were produced jointly by an extrusion process and extend in parallel.
- the heat exchanger 4 is configured as an evaporator 7 and has a heat exchanger inlet 21 and a heat exchanger outlet 22.
- the length of the parallel circuit 10 along the flow path 11 is given by the distance from point A to point A '.
- the length of the entire flow path 1 1 of the heat exchanger 4 is given by the distance from point B to point B '.
- the length of the parallel circuit is more than 95% of the length of the flow path 1 1 of the coolant in the heat exchanger 4.
- the coolant lines 5, 23 are interconnected by heat exchange elements 8, which are designed as cooling ribs 9.
- the invention relates to a refrigeration device 1 comprising a cooling circuit 2 with a coolant circulating therein for cooling at least one cooling compartment 3, the cooling circuit 2 having a heat exchanger 4 with a coolant line 5, 23, the heat exchanger 4 having at least two coolant lines 5, 23 connected in parallel , and is characterized by a high efficiency and a particularly high cooling or freezing capacity.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007016849A DE102007016849A1 (en) | 2007-04-10 | 2007-04-10 | Refrigerating appliance with three temperature zones |
PCT/EP2008/054308 WO2008122656A1 (en) | 2007-04-10 | 2008-04-09 | Refrigeration device comprising coolant conduits that are connected in parallel in the heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2132499A1 true EP2132499A1 (en) | 2009-12-16 |
Family
ID=39365903
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08718003A Active EP2132496B1 (en) | 2007-04-10 | 2008-03-19 | Cooling device having three temperature zones |
EP08736031A Withdrawn EP2132499A1 (en) | 2007-04-10 | 2008-04-09 | Refrigeration device comprising coolant conduits that are connected in parallel in the heat exchanger |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08718003A Active EP2132496B1 (en) | 2007-04-10 | 2008-03-19 | Cooling device having three temperature zones |
Country Status (8)
Country | Link |
---|---|
US (1) | US8245526B2 (en) |
EP (2) | EP2132496B1 (en) |
CN (2) | CN101652609B (en) |
AT (1) | ATE543057T1 (en) |
DE (1) | DE102007016849A1 (en) |
ES (1) | ES2378348T3 (en) |
RU (2) | RU2468308C2 (en) |
WO (2) | WO2008122493A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008006893U1 (en) * | 2008-03-14 | 2009-07-30 | Liebherr-Hausgeräte Lienz Gmbh | Fridge and / or freezer |
DE202008009956U1 (en) * | 2008-04-15 | 2009-08-20 | Liebherr-Hausgeräte Lienz Gmbh | Fridge and / or freezer |
DE102008044289A1 (en) * | 2008-12-02 | 2010-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with several compartments |
DE102009000840A1 (en) | 2009-02-13 | 2010-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with uniform temperature distribution |
CN103673406B (en) * | 2013-12-11 | 2016-04-27 | 常州市常蒸蒸发器有限公司 | Finned evaporator |
US9791188B2 (en) * | 2014-02-07 | 2017-10-17 | Pdx Technologies Llc | Refrigeration system with separate feedstreams to multiple evaporator zones |
DE102014213183A1 (en) | 2014-07-08 | 2016-01-14 | BSH Hausgeräte GmbH | Refrigeration unit with two compressors |
US20190264973A1 (en) * | 2018-02-26 | 2019-08-29 | Ronald Koelsch | Zone isolation control system for transport refrigeration units |
DE102020211910A1 (en) | 2020-09-23 | 2022-03-24 | BSH Hausgeräte GmbH | Heat exchanger for a refrigeration device, method for producing a heat exchanger and refrigeration device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050086965A1 (en) * | 2003-10-22 | 2005-04-28 | Rejean Lalumiere | Cooling mechanism for refrigeration systems |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1941495A1 (en) | 1968-09-27 | 1970-04-09 | Hitachi Ltd | Refrigeration device with simple and inexpensive tem - perature control mechanism |
SU848921A1 (en) * | 1979-06-19 | 1981-07-23 | Предприятие П/Я В-8695 | Double-chamber domestic refrigerator |
JPS59212662A (en) | 1983-05-18 | 1984-12-01 | 株式会社東芝 | Refrigerator |
DE3804863A1 (en) * | 1988-02-17 | 1989-08-31 | Schmoele Metall R & G | Cooling plate for a refrigerator |
DE4242776A1 (en) * | 1992-12-17 | 1994-06-23 | Bosch Siemens Hausgeraete | Cooling device, in particular multi-temperature cooling device |
KR0140503B1 (en) | 1993-02-25 | 1997-06-10 | 김광호 | Refrigerator that can change function of compartment and its control method |
DE19756861A1 (en) | 1997-12-19 | 1999-06-24 | Bosch Siemens Hausgeraete | Refrigerator with injection points at evaporator to generate lower temperature |
JP2002267317A (en) | 2001-03-13 | 2002-09-18 | Toshiba Corp | Refrigerator |
JP2003207248A (en) * | 2002-01-15 | 2003-07-25 | Toshiba Corp | Refrigerator |
JP2004324902A (en) * | 2003-04-21 | 2004-11-18 | Matsushita Electric Ind Co Ltd | Freezing refrigerator |
KR20050038293A (en) * | 2003-10-21 | 2005-04-27 | 엘지전자 주식회사 | A valve control method of refrigerator |
-
2007
- 2007-04-10 DE DE102007016849A patent/DE102007016849A1/en not_active Withdrawn
-
2008
- 2008-03-19 AT AT08718003T patent/ATE543057T1/en active
- 2008-03-19 ES ES08718003T patent/ES2378348T3/en active Active
- 2008-03-19 CN CN2008800113568A patent/CN101652609B/en not_active Expired - Fee Related
- 2008-03-19 WO PCT/EP2008/053277 patent/WO2008122493A1/en active Application Filing
- 2008-03-19 EP EP08718003A patent/EP2132496B1/en active Active
- 2008-03-19 US US12/532,199 patent/US8245526B2/en active Active
- 2008-03-19 RU RU2009137098/06A patent/RU2468308C2/en active
- 2008-04-09 WO PCT/EP2008/054308 patent/WO2008122656A1/en active Application Filing
- 2008-04-09 EP EP08736031A patent/EP2132499A1/en not_active Withdrawn
- 2008-04-09 CN CN200880011351A patent/CN101652610A/en active Pending
- 2008-04-09 RU RU2009137481/06A patent/RU2009137481A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050086965A1 (en) * | 2003-10-22 | 2005-04-28 | Rejean Lalumiere | Cooling mechanism for refrigeration systems |
Also Published As
Publication number | Publication date |
---|---|
RU2468308C2 (en) | 2012-11-27 |
DE102007016849A1 (en) | 2008-10-16 |
ES2378348T3 (en) | 2012-04-11 |
ATE543057T1 (en) | 2012-02-15 |
CN101652609B (en) | 2012-09-05 |
EP2132496B1 (en) | 2012-01-25 |
WO2008122493A1 (en) | 2008-10-16 |
US8245526B2 (en) | 2012-08-21 |
EP2132496A1 (en) | 2009-12-16 |
US20100043476A1 (en) | 2010-02-25 |
RU2009137481A (en) | 2011-05-20 |
CN101652610A (en) | 2010-02-17 |
WO2008122656A1 (en) | 2008-10-16 |
RU2009137098A (en) | 2011-05-20 |
CN101652609A (en) | 2010-02-17 |
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