EP2297531A2 - Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant - Google Patents

Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant

Info

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Withdrawn
Application number
EP09749772A
Other languages
German (de)
English (en)
Inventor
Peter Nalbach
Janina Haschke
Berthold Pflomm
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
Publication of EP2297531A2 publication Critical patent/EP2297531A2/fr
Withdrawn legal-status Critical Current

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
    • 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

L'invention vise à mettre en oeuvre un appareil ménager combiné réfrigérateur/congélateur, de construction simple, dont chaque compartiment, au nombre d'au moins deux, peut être coupé individuellement. L'appareil frigorifique comporte à cet effet un circuit de refroidissement composé d'un compresseur (5), d'un condenseur (6) présentant une conduite de refroidissement (60) connectée sur sa première extrémité (61) au compresseur (5), d'une première soupape (11) connectée à la deuxième extrémité (62) de la conduite de refroidissement (60) du condenseur (6), d'un premier évaporateur (3) monté en aval de la première soupape (11) et connecté au compresseur (5), et d'un deuxième évaporateur (4). Une deuxième soupape (10) est montée entre les deux extrémités (61, 62) de la conduite de refroidissement (60) du condenseur (6) et est connectée sur sa deuxième sortie (10b) au deuxième évaporateur (4), le deuxième évaporateur (4) étant connecté côté sortie au compresseur (5). De manière avantageuse, il est ainsi possible de construire un système à double circuit de refroidissement comportant un seul compresseur, et du fait du stockage de fluide frigorigène dans la deuxième partie (6b) du condenseur (6), il est possible d'adapter la quantité de fluide frigorigène au condenseur et inversement, ce qui permet d'augmenter le rendement énergétique.
EP09749772A 2008-05-20 2009-05-15 Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant Withdrawn EP2297531A2 (fr)

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 (fr) 2008-05-20 2009-05-15 Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant

Publications (1)

Publication Number Publication Date
EP2297531A2 true EP2297531A2 (fr) 2011-03-23

Family

ID=41016855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09749772A Withdrawn EP2297531A2 (fr) 2008-05-20 2009-05-15 Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant

Country Status (5)

Country Link
EP (1) EP2297531A2 (fr)
CN (1) CN102037294A (fr)
DE (1) DE102008024325A1 (fr)
RU (1) RU2010149138A (fr)
WO (1) WO2009141282A2 (fr)

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JP2013519066A (ja) * 2011-04-12 2013-05-23 ツィンファ ユニバーシティ 温度及び湿度を独立に制御可能な空調システムの熱源及び冷熱源
KR20130112627A (ko) * 2012-04-04 2013-10-14 동부대우전자 주식회사 냉장고용 냉각사이클의 이상유무 검출장치 및 검출방법
JP6055923B2 (ja) 2012-09-16 2016-12-27 へフェイ メイリン シーオー リミテッド 電気弁、並びに電気弁を含む単一サイクル、二重サイクル、及び三重サイクル冷凍システム
TR201509811A2 (tr) * 2015-08-07 2017-02-21 Arcelik As Soğutma performansi i̇yi̇leşti̇ri̇len bi̇r soğutucu
WO2017115359A1 (fr) 2015-12-29 2017-07-06 Zuta-Core Ltd. Système de gestion thermique faisant appel au vide
US12439561B2 (en) 2017-03-12 2025-10-07 Zuta-Core Ltd. Systems and methods for heat exchange
WO2019021273A1 (fr) * 2017-07-23 2019-01-31 Zuta-Core Ltd. Systèmes et procédés pour l'échange de chaleur
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

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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

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Also Published As

Publication number Publication date
RU2010149138A (ru) 2012-06-27
WO2009141282A2 (fr) 2009-11-26
WO2009141282A3 (fr) 2010-02-18
DE102008024325A1 (de) 2009-11-26
CN102037294A (zh) 2011-04-27

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