EP2297531A2 - Kühlgerät mit kühlmittelspeicherung im verflüssiger und entsprechendes verfahren - Google Patents
Kühlgerät mit kühlmittelspeicherung im verflüssiger und entsprechendes verfahrenInfo
- Publication number
- EP2297531A2 EP2297531A2 EP09749772A EP09749772A EP2297531A2 EP 2297531 A2 EP2297531 A2 EP 2297531A2 EP 09749772 A EP09749772 A EP 09749772A EP 09749772 A EP09749772 A EP 09749772A EP 2297531 A2 EP2297531 A2 EP 2297531A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- condenser
- cooling
- compressor
- compartment
- 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- Withdrawn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
- 238000001816 cooling Methods 0.000 title claims abstract description 74
- 239000002826 coolant Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 8
- 238000003860 storage Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 43
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2507—Flow-diverting valves
Definitions
- the present invention relates to a refrigerator having a refrigeration cycle comprising: a compressor, a condenser having a cooling line connected at its first end to a compressor, a first valve connected to the second end of the condenser cooling line, a first evaporator , which is connected downstream of the first valve and connected to the compressor, and a second evaporator.
- the present invention relates to a method for cooling a first compartment and a second compartment of a refrigerator, wherein the refrigerator comprises a condenser in which the refrigerant is liquefied.
- Thedegefrierkombination has a freezer compartment 1 and a cooling compartment 2 (in Fig. 1 also with GS: Freezer and KS: refrigerator called).
- a first evaporator 3 In the freezer compartment 1 there is a first evaporator 3 and in the refrigerating compartment there is a second evaporator 4.
- Refrigerant or coolant is injected into the freezer evaporator or first evaporator 3 at an injection point 7.
- This is connected to the refrigerator compartment evaporator or second evaporator 4 and the refrigerant is sucked out of the second evaporator 4. From there it is fed into a compressor 5 and further into a condenser 6.
- the condenser 6 On the output side, the condenser 6 is again connected to the injection point 7 at the first evaporator 3.
- cooling-freezing combinations which have a two-circuit system with a compressor 5. After the compressor 5, the coolant flows into the condenser 6 and from there into a solenoid valve 8. Depending on the switching position, the liquefied coolant in a
- Injection point 7 at the entrance of the evaporator 3 in the freezer compartment 1 or to a
- Injection point 9 of the evaporator 4 in the cooling compartment 2 out. From the outlet of the evaporator 3 of the freezer compartment 1, the coolant is fed directly to the compressor 5.
- knowndegefrierkombinationen shown in FIG. 3 are also equipped with a two-circuit system with two compressors 5 and 5 '.
- a condenser 6 and in turn the evaporator 3 of the freezer compartment 1 is connected with a corresponding injection point 7.
- the outlet of the evaporator 3 leads back to the compressor 5.
- a similar cooling circuit is constructed for the refrigerating compartment 2.
- a condenser 6' is connected, which continues the coolant via the injection point 9 to the evaporator 4.
- the output of the evaporator 4 is coupled to the input of the compressor 5 '. Accordingly, the two refrigeration circuits for the refrigerator compartment 2 and freezer compartment 1 are completely separated from each other.
- the object of the present invention is thus to provide a refrigeration unit, in particular a household refrigerator / freezer combination unit, which has lower production costs and yet allows each of two compartments can be switched off individually if required.
- a cooling device in particular household refrigerator / freezer combination device, comprising a cooling circuit comprising:
- a second valve which is connected between the two ends of the cooling line of the condenser and connected to a second output to the second evaporator, wherein - the second evaporator is connected on the output side to the compressor.
- the valves are bistable solenoid valves.
- the same component can be used for both valves, so that the logistics costs are reduced.
- only one outlet may need to be soldered.
- the valves are according to a specific embodiment in particular only up to a predetermined pressure tight. In this way, an overpressure protection can be realized in an advantageous manner.
- valves may preferably also be controlled such that both valves or only the first valve is opened before the compressor is switched on. Even so, a pressure equalization before the start of the compressor can be realized, so that the compressor does not have to work against increased pressure during startup.
- the part of the condenser from the first end of the cooling line to the second valve may advantageously be adapted to the performance of the second evaporator. In this way, an optimized cooling system can be achieved.
- FIG. 1 shows a single-circuit system for a refrigerator with a freezer and a cooling compartment according to the prior art.
- FIG. 2 is a two-cycle system with a single compressor according to the prior art;
- Fig. 4 is a two-circuit system with a single compressor and two independently controllable evaporators
- Fig. 5 shows an embodiment of a two-cycle system according to the invention with a single compressor and a storage option of the coolant in the condenser.
- both compartments can not be switched off separately.
- the solenoid valve 8 allows to switch between the two circuits. If the freezer compartment 1 is activated, then refrigerant is injected into the freezer compartment or its evaporator 3 and is sucked directly out of it to the compressor 5. If, in contrast, the cooling compartment is actuated, then refrigerant is injected into the cooling compartment evaporator 4. There, however, it is passed into the freezer compartment evaporator 3 and sucked through the entire freezer compartment evaporator 3 through to the compressor 5. As a result, the freezer is always cooled in the event that the cooling compartment is controlled. Accordingly, you can indeed turn off the refrigerator compartment 2 separately, but the freezer compartment 1 can not be switched off separately.
- the freezer evaporators are significantly larger than the refrigerated compartment evaporators. This is due to various requirements and not least to the optimization of energy efficiency. As a result, however, the freezer compartment evaporator 3 requires significantly more refrigerant than the refrigerating compartment evaporator 4 in order to be operated efficiently.
- the XOR device can not be optimized for both subjects. This was also not possible with the system according to FIG. 2. Namely, in this system, the refrigerant amount is defined by the freezer compartment 1. Although this is too much for the refrigerating compartment 2, but since the refrigerating compartment evaporator 4 is sucked through the freezer compartment evaporator 3, the superfluous refrigerant is then used to cool the freezer compartment 1 and is therefore not lost.
- a solenoid valve 10 (hereinafter referred to as “second solenoid valve”) is disposed to the injection point 9 of the refrigerator compartment evaporator. 4
- the second end section 62 of the cooling line 60 of the here preferably tubular condenser 6 is connected to a further solenoid valve 11 (hereinafter referred to as "first solenoid valve”.)
- first solenoid valve The outlet of this first solenoid valve 11 is led to the injection point 7 of the freezer compartment evaporator 3.
- the second output 10b of the second solenoid valve 10 directs the refrigerant from the first condenser 6a directly into the refrigerating compartment evaporator 4.
- the first solenoid valve 1 1 has no second output and only serves as a shut-off valve. Even if bistable solenoid valves are used in the present case, it remains unavoidable to implement the cooling system with other valve types.
- the amount is determined by the size of the reservoir, in particular the length of the second section of the tubular condenser, and the condenser pressure at the end of the freezer compartment cooling period (second compartment).
- the condenser pressure is variable depending on the ambient conditions - and thus never exactly the same amount of refrigerant is locked away. Accordingly, the design of the condenser is made under different environmental conditions. If the conditions of use are not to be limited too much, one of the two valves can also be designed so that it is not tight above a certain storage pressure. In this case, the pressure will drop to this predetermined pressure and adjust the amount of stored refrigerant. In principle, such a pressure limitation is possible, but it is usually not necessary because small fluctuations of the weggesperrten amount of the refrigerant have no major impact.
- the cooling compartment 2 can be cooled for a short time until a pressure between 4 and 6 bar has also been set in the first condenser part 6a and the compressor has adjusted to this operating point. It is therefore actually a pure start-up problem of the compressor. Following the pressure increase in the first condenser part 6a can be switched to the freezer compartment cooling.
- the inventive principle is not limited to combinations of fridge and freezer, but can also extend devices with multiple subjects (refrigerator compartment, freezer, zero degree compartment, etc.) and also on so-called "no-frost systems.”
- the freezer evaporator 3 the larger evaporator .. It is crucial that the amount of refrigerant in the system can be adjusted.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008024325A DE102008024325A1 (de) | 2008-05-20 | 2008-05-20 | Kühlgerät mit Kühlmittelspeicherung im Verflüssiger und entsprechendes Verfahren |
| PCT/EP2009/055939 WO2009141282A2 (de) | 2008-05-20 | 2009-05-15 | Kühlgerät mit kühlmittelspeicherung im verflüssiger und entsprechendes verfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2297531A2 true EP2297531A2 (de) | 2011-03-23 |
Family
ID=41016855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09749772A Withdrawn EP2297531A2 (de) | 2008-05-20 | 2009-05-15 | Kühlgerät mit kühlmittelspeicherung im verflüssiger und entsprechendes verfahren |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2297531A2 (de) |
| CN (1) | CN102037294A (de) |
| DE (1) | DE102008024325A1 (de) |
| RU (1) | RU2010149138A (de) |
| WO (1) | WO2009141282A2 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130111940A1 (en) * | 2011-04-12 | 2013-05-09 | Mitsubishi Heavy Industries, Ltd. | Heat and cold sources of temperature and humidity independent control air conditioning system |
| KR20130112627A (ko) * | 2012-04-04 | 2013-10-14 | 동부대우전자 주식회사 | 냉장고용 냉각사이클의 이상유무 검출장치 및 검출방법 |
| US9683765B2 (en) | 2012-09-16 | 2017-06-20 | Hefei Meiling Co., Ltd | Electric valve and refrigerating system comprising the same |
| TR201509811A2 (tr) * | 2015-08-07 | 2017-02-21 | Arcelik As | Soğutma performansi i̇yi̇leşti̇ri̇len bi̇r soğutucu |
| CN108781523A (zh) | 2015-12-29 | 2018-11-09 | 祖达科尔有限公司 | 基于真空的热管理系统 |
| WO2019021273A1 (en) * | 2017-07-23 | 2019-01-31 | Zuta-Core Ltd. | SYSTEMS AND METHODS FOR HEAT EXCHANGE |
| US12439561B2 (en) | 2017-03-12 | 2025-10-07 | Zuta-Core Ltd. | Systems and methods for heat exchange |
| CN107152809A (zh) * | 2017-05-11 | 2017-09-12 | 合肥美的电冰箱有限公司 | 多循环制冷系统及冰箱 |
| DE102017215488A1 (de) * | 2017-09-04 | 2019-03-07 | BSH Hausgeräte GmbH | Kältegerät mit mehreren Temperaturzonen |
| DE102019201427B4 (de) * | 2019-02-05 | 2022-01-13 | Audi Ag | Verfahren zum Betreiben eines Kältemittelkreislaufs einer Kälteanlage eines Fahrzeugs |
| CN111735263B (zh) * | 2020-07-23 | 2024-02-13 | 珠海格力电器股份有限公司 | 制冷系统、储藏库及其温度调节方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4414818A (en) | 1981-03-05 | 1983-11-15 | Borg-Warner Ltd. | Environmental control system |
| JPH05322336A (ja) | 1992-05-26 | 1993-12-07 | Nippondenso Co Ltd | 冷凍サイクル |
| JP2004324902A (ja) | 2003-04-21 | 2004-11-18 | Matsushita Electric Ind Co Ltd | 冷凍冷蔵庫 |
| ITTO20050867A1 (it) | 2005-12-14 | 2007-06-15 | Indesit Co Spa | Apparecchio elettrico con almeno un vano refrigerato e con una unita' di trattamento dell'aria |
| DE202006005551U1 (de) * | 2006-04-05 | 2006-07-06 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit Rohrverdampfer |
-
2008
- 2008-05-20 DE DE102008024325A patent/DE102008024325A1/de not_active Ceased
-
2009
- 2009-05-15 WO PCT/EP2009/055939 patent/WO2009141282A2/de not_active Ceased
- 2009-05-15 RU RU2010149138/06A patent/RU2010149138A/ru not_active Application Discontinuation
- 2009-05-15 EP EP09749772A patent/EP2297531A2/de not_active Withdrawn
- 2009-05-15 CN CN2009801182729A patent/CN102037294A/zh active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009141282A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009141282A2 (de) | 2009-11-26 |
| WO2009141282A3 (de) | 2010-02-18 |
| CN102037294A (zh) | 2011-04-27 |
| RU2010149138A (ru) | 2012-06-27 |
| DE102008024325A1 (de) | 2009-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20101220 |
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| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PFLOMM, BERTHOLD Inventor name: HASCHKE, JANINA Inventor name: NALBACH, PETER |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20120215 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20131202 |