EP3417212A1 - Kältegerät mit mehreren lagerkammern - Google Patents
Kältegerät mit mehreren lagerkammernInfo
- Publication number
- EP3417212A1 EP3417212A1 EP17702371.0A EP17702371A EP3417212A1 EP 3417212 A1 EP3417212 A1 EP 3417212A1 EP 17702371 A EP17702371 A EP 17702371A EP 3417212 A1 EP3417212 A1 EP 3417212A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- storage chamber
- throttle point
- refrigerating appliance
- 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
- 238000005057 refrigeration Methods 0.000 title abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 53
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
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
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
-
- 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
- F25B2600/2501—Bypass 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
Definitions
- the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, with a plurality of storage chambers, which are operable at different temperatures.
- a refrigeration device with a plurality of storage chambers in which a first throttle point, a first heat exchanger for controlling the temperature of the first storage chamber, a second throttle point and a second heat exchanger for cooling the second storage chamber are connected in series in a refrigerant circuit.
- the pressure drop at the second throttle point causes a pressure difference between the two heat exchangers, so that the evaporation temperature of the refrigerant in the second heat exchanger is lower than in the first and thus in the second storage chamber, a lower operating temperature can be set than in the first.
- the first heat exchanger can work as an evaporator or as a condenser. When operating as a condenser, the operating temperature of the first storage chamber may be at room temperature or even slightly higher.
- Object of the present invention is to provide a refrigeration device with a plurality of storage chambers, which allows energy-efficient operation even if a high and a second storage chamber a low operating temperature is selected for a first storage chamber.
- the object is achieved by, in a refrigerator with at least a first and a second storage chamber and a refrigerant circuit, in which a first throttle, a first heat exchanger for controlling the temperature of the first storage chamber, a second throttle and a second heat exchanger for cooling the second storage chamber in series and a low pressure line section located downstream of the second heat exchanger forming a first inner heat exchanger, a bypass line extending parallel to the high pressure line section to the first heat exchanger, and a control valve for controlling the distribution of the refrigerant is provided to the high-pressure line section and the bypass line.
- the refrigerant can be directed via the shunt line directly to the first heat exchanger; In order to achieve energy-efficient operation at low temperature of the first storage chamber, the refrigerant is passed through the inner heat exchanger.
- the bypass line is expediently also arranged parallel to the first throttle point.
- the control valve may be a directional control valve.
- the directional control valve may form an upstream or a downstream end of the shunt line; preferably it forms the upstream end because there is a small line cross-section sufficient and a more compact and less expensive valve can be used, while a valve at the downstream end must be spacious enough to conduct even in the first throttle relaxed refrigerant without excessive pressure drop.
- control valve may be a shut-off valve arranged in the shunt line.
- a check valve forces the entire refrigerant flow through the inner heat exchanger; are in the open state
- a third heat exchanger is arranged in a branch of the refrigerant circuit, which extends to the second heat exchanger, bypassing the first and second throttle point and the first heat exchanger. So still a third storage chamber can be tempered.
- the third heat exchanger in the branch is preferably preceded by a third throttle point and a fourth throttle point downstream.
- a medium pressure line section extending between the first heat exchanger and the second orifice and a second low pressure line section may form a second internal heat exchanger.
- the second inner heat exchanger contributes to an energy-efficient operation, in particular, when the refrigerant, in order to keep the first storage chamber at a high operating temperature, is directed past the first inner heat exchanger.
- a third heat exchanger in the refrigerant circuit downstream of the first heat exchanger and upstream of the second heat exchanger may be formed by a medium-pressure line section extending between the first heat exchanger and a third throttle point upstream of the third heat exchanger, and a second low-pressure line section.
- the control valve is coupled to a temperature sensor of the first storage chamber to control the distribution of the refrigerant to the high pressure line section and the bypass line depending on the temperature detected by the temperature sensor.
- the temperature of the refrigerant, which in the Heat exchanger of the first storage chamber passes varies and - if the bypass line bypasses the first throttle point - if necessary, also be switched between condenser and evaporator operation of the first heat exchanger. In this way, operating temperatures close to the ambient temperature can be maintained in the first storage chamber, which can not be reliably realized at a fixed predetermined position of the directional control valve.
- Fig. 1 is a schematic representation of the refrigerant circuit according to a first
- Fig. 3 is a modification of a detail of Fig.1;
- Fig. 3 is an illustration of the refrigerant circuit according to a second embodiment.
- the refrigerant circuit shown in Fig. 1 comprises a speed-controlled compressor 1 with a pressure port 2 and a suction port 3.
- a flowing from the pressure port 2 high-pressure refrigerant line 4 runs in the direction of circulation of the refrigerant first via a condenser 5 and a branch 6 to a directional control valve.
- a section of the high-pressure refrigerant line 4 leads from a first output of the directional control valve 7 via an inner heat exchanger 8 and a first throttle point 9 to a heat exchanger 10 which is assigned to a first storage chamber 26 of the refrigeration device.
- a bypass line 1 1 connects a second output of the directional control valve 7 directly, bypassing the inner heat exchanger 8 and the throttle point 9, with the heat exchanger 10th
- An output of the heat exchanger 10 is connected via a second inner heat exchanger 12 and a second throttle point 13 with a heat exchanger 14 which is associated with a second storage chamber 27.
- a low-pressure refrigerant line 15 extends from an exit of the heat exchanger 14 via the second inner heat exchanger 12 and the first inner heat exchanger 8 back to the suction port 3.
- the inner heat exchangers 8, 12 each comprise a section 16 or 17 of the low-pressure line 15 and a section 18 of the high-pressure refrigerant line 4 or a line section 19 under a medium pressure which is in close heat-conducting contact at the low-pressure line section 16 or 17 attached, eg soldered, is or is guided within the relatively spacious low-pressure line section 16 and 17 respectively.
- the high-pressure or medium-pressure sections 18 and 19 may themselves be part of the adjacent throttle point 9 or 13, for example, in that they are designed as capillaries.
- a section 24 of the line branch 16 extends here in the first inner heat exchanger 8 in thermal contact with the same low pressure line section 16 as the high pressure line section 18; alternatively, it could form a third internal heat exchanger together with another portion of the low pressure line 15.
- the branch 16 terminates at a confluence 25, downstream of the second orifice 13 and upstream of the second heat exchanger 14.
- the throttling points 9, 13, 21, 23 can all be designed as capillaries with a fixed, unchangeable flow conductance.
- fans 29 are provided in the bearing chambers 26, 27, 28 which, if required, are assigned to the bearing chamber Blow heat exchanger 10, 14 or 22 respectively.
- expansion valves, with controllable Strömungsleitwert, as throttling points 9, 13, 21, 23 find use.
- the fans 29 are then not necessarily necessary to regulate the temperatures of the storage chambers 26, 27, 28; can but still be advantageously provided to control in addition to the temperature and the humidity in the storage chambers 26, 27, 28.
- Another fan 30 may be provided on the condenser to intensify the heat exchange there, if necessary.
- the compressor 1 When the compressor 1 is in operation, compressed refrigerant after a first cooling in the condenser 5 to branch 6.
- the refrigerant is at least to a large extent liquid, its temperature is depending on the dimensions of the condenser by some degrees higher than the ambient temperature.
- a portion of the refrigerant flows via the throttle point 21, the heat exchanger 22 and the throttle point 23 to the heat exchanger 14 and from there back to the suction port third
- the pressure in the evaporator 14 is low enough to allow operation of the storage chamber 27 as a freezer compartment, the pressure in the heat exchangers 10, 22 is between that of the condenser 5 and that of the heat exchanger 14 and allows operation of the storage chambers 26, 28, for example Fresh refrigerated compartment or as a normal refrigerated compartment.
- the ambient temperature would have to be reliably far enough above the desired compartment temperature.
- the heat exchanger 10 when the directional control valve 7 is open to the bypass line 1 1, the pressure difference between the condenser 5 and the heat exchanger 10 is negligible, and the temperature that sets in the heat exchanger 10 is the common pressure of condenser 5 and heat exchanger 10 corresponding evaporation temperature of the refrigerant.
- the heat exchanger 10 then operates as a second condenser, which delivers heat to the storage chamber 15.
- the storage chamber 26 reaches in this way temperatures above ambient temperature and can therefore be used for rapid thawing or heating of food or for fermentation, such as to let go of dough or yogurt preparation.
- the temperature of the refrigerant at the outlet of the heat exchanger 10 is generally still above the ambient temperature.
- the second inner heat exchanger 12 ensures a cooling of the refrigerant before reaching the throttle point 13 and thus enables efficient cooling of the storage chamber 27th
- the storage chambers 26, 27, 28 can each be equipped with a temperature sensor in a manner known per se, in order to determine the speed of the compressor 1 and the flow control values of the throttle points based on a comparison of the actual temperatures in the storage chambers 26, 27, 28 with set values set by the user 9, 13, 21, 23 and / or to control the speeds of the fans 29.
- a temperature sensor 31 of the storage chamber 26 additionally serves to control the directional control valve 7: deviates significantly from the setpoint value downwards, while the directional control valve 7 is in the position shown in FIG. 1 and none of the other storage chambers 27 , 28 has cooling demand, then the directional control valve 7 is switched to direct hot refrigerant via the shunt line 1 1 in the heat exchanger 10.
- the directional control valve 7 is returned to the position of FIG. 1, when the inflow of the hot refrigerant, the temperature of the storage chamber 26 can differ significantly from the target value upwards. In this way, set temperatures which are close to the ambient temperature and which, when the ambient temperature fluctuates, can sometimes be higher and lower than those in the storage chamber 26 can be maintained.
- FIG. 2 shows a detail of the refrigerant circuit of a refrigerator according to a modified embodiment.
- the directional control valve 7 of FIG. 1 is here replaced by a shut-off valve 32 in the bypass line 1 1.
- the parallel to the bypass line 1 1 way to the heat exchanger 10 via the high-pressure line section 18 and the throttle point 9 is constantly open.
- the operation of this refrigerant circuit is not significantly different from that shown in Fig. 1. If the shut-off valve 32 is closed, the refrigerant can also reach in this embodiment, the heat exchanger 10 only via the throttle point 9.
- the shut-off valve 32 is open, the path across the restriction 9 does not significantly contribute to the refrigerant flow.
- 3 shows a simplified refrigerant circuit according to a second embodiment of the invention.
- the refrigerator has three storage chambers 26, 27, 28, however, the heat exchanger 22 of the storage chamber 28 and the heat exchanger 22 upstream throttle body 21 between the line section 19 of the second inner heat exchanger 12 and the throttle body 13 is inserted, so that a series circuit of Heat exchanger 10, 22, 14 of all three storage chambers 26, 27, 28 results.
- the structure of the refrigerant circuit is simplified compared to FIG. 1, since the branch 6, the throttle point 23 and the confluence 25 are omitted.
- the only limitation that must be accepted for this is that the setpoint temperature of the storage chamber 26 here can not be lower than that of the storage chamber 28.
- the directional control valve 7 can be replaced by a shut-off valve in the bypass line 1 1, and a temperature sensor of the storage chamber 27 can serve to control the position of the directional control valve 7 or the shut-off valve.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016202564.3A DE102016202564A1 (de) | 2016-02-19 | 2016-02-19 | Kältegerät mit mehreren Lagerkammern |
PCT/EP2017/052044 WO2017140494A1 (de) | 2016-02-19 | 2017-01-31 | Kältegerät mit mehreren lagerkammern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3417212A1 true EP3417212A1 (de) | 2018-12-26 |
EP3417212B1 EP3417212B1 (de) | 2023-05-17 |
Family
ID=57944430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17702371.0A Active EP3417212B1 (de) | 2016-02-19 | 2017-01-31 | Kältegerät mit mehreren lagerkammern |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190032985A1 (de) |
EP (1) | EP3417212B1 (de) |
CN (1) | CN108700346A (de) |
DE (1) | DE102016202564A1 (de) |
PL (1) | PL3417212T3 (de) |
WO (1) | WO2017140494A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107351624B (zh) * | 2016-05-10 | 2020-08-25 | 比亚迪股份有限公司 | 热泵空调系统及电动汽车 |
CN107356003B (zh) | 2016-05-10 | 2021-04-20 | 比亚迪股份有限公司 | 热泵空调系统及电动汽车 |
DE102019213220A1 (de) * | 2019-09-02 | 2021-03-04 | BSH Hausgeräte GmbH | Kältegerät mit heiz- und kühlbaren Fächern |
DE102019216582A1 (de) * | 2019-10-28 | 2021-04-29 | BSH Hausgeräte GmbH | Kältegerät mit heiz- und kühlbarem Fach |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826511B2 (ja) * | 1978-03-31 | 1983-06-03 | 三洋電機株式会社 | 冷凍機用除霜装置 |
US4439996A (en) * | 1982-01-08 | 1984-04-03 | Whirlpool Corporation | Binary refrigerant system with expansion valve control |
JPS59164860A (ja) * | 1983-03-09 | 1984-09-18 | 株式会社東芝 | 冷蔵庫の冷凍サイクル |
JPS604774A (ja) * | 1983-06-22 | 1985-01-11 | 株式会社東芝 | 冷蔵庫 |
US4918942A (en) * | 1989-10-11 | 1990-04-24 | General Electric Company | Refrigeration system with dual evaporators and suction line heating |
US5157943A (en) * | 1990-11-09 | 1992-10-27 | General Electric Company | Refrigeration system including capillary tube/suction line heat transfer |
JP2917764B2 (ja) * | 1992-09-17 | 1999-07-12 | 株式会社デンソー | 冷房装置用蒸発器 |
KR0140503B1 (ko) * | 1993-02-25 | 1997-06-10 | 김광호 | 구획실의 기능을 변경할 수 있는 냉장고 및 그 제어방법 |
JP2001108319A (ja) * | 1999-10-06 | 2001-04-20 | Matsushita Refrig Co Ltd | 冷凍装置 |
US6327871B1 (en) * | 2000-04-14 | 2001-12-11 | Alexander P. Rafalovich | Refrigerator with thermal storage |
US7017353B2 (en) * | 2000-09-15 | 2006-03-28 | Scotsman Ice Systems | Integrated ice and beverage dispenser |
DE10203772A1 (de) * | 2002-01-30 | 2004-04-15 | Robert Bosch Gmbh | Klimaanlage mit Heizfunktion und Verfahren zum Betrieb einer Klimaanlage mit Heizfunktion |
JP2006064289A (ja) * | 2004-08-26 | 2006-03-09 | Hoshizaki Electric Co Ltd | 冷却装置 |
CN1645011A (zh) * | 2005-01-13 | 2005-07-27 | 西安交通大学 | 一种多级节流的制冷循环方法 |
KR101366279B1 (ko) * | 2007-11-05 | 2014-02-20 | 엘지전자 주식회사 | 냉장고 및 그 제어방법 |
CN102080895A (zh) * | 2011-01-18 | 2011-06-01 | 合肥美的荣事达电冰箱有限公司 | 制冷系统、具有该制冷系统的冰箱及其控制方法 |
CN104251579A (zh) * | 2013-06-26 | 2014-12-31 | 海尔集团公司 | 用于直冷冰箱的化霜控制系统 |
DE102013226341A1 (de) | 2013-12-18 | 2015-06-18 | BSH Hausgeräte GmbH | Kältegerät mit mehreren Kältefächern |
DE102014223460A1 (de) * | 2014-02-27 | 2015-08-27 | BSH Hausgeräte GmbH | Kältegerät |
-
2016
- 2016-02-19 DE DE102016202564.3A patent/DE102016202564A1/de not_active Withdrawn
-
2017
- 2017-01-31 PL PL17702371.0T patent/PL3417212T3/pl unknown
- 2017-01-31 EP EP17702371.0A patent/EP3417212B1/de active Active
- 2017-01-31 WO PCT/EP2017/052044 patent/WO2017140494A1/de active Application Filing
- 2017-01-31 CN CN201780011979.4A patent/CN108700346A/zh active Pending
- 2017-01-31 US US16/075,816 patent/US20190032985A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP3417212B1 (de) | 2023-05-17 |
DE102016202564A1 (de) | 2017-08-24 |
PL3417212T3 (pl) | 2023-09-18 |
CN108700346A (zh) | 2018-10-23 |
US20190032985A1 (en) | 2019-01-31 |
WO2017140494A1 (de) | 2017-08-24 |
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