EP2126482A2 - Meuble de réfrigération pourvu d'au moins deux compartiments thermiquement séparés l'un de l'autre - Google Patents

Meuble de réfrigération pourvu d'au moins deux compartiments thermiquement séparés l'un de l'autre

Info

Publication number
EP2126482A2
EP2126482A2 EP07847278A EP07847278A EP2126482A2 EP 2126482 A2 EP2126482 A2 EP 2126482A2 EP 07847278 A EP07847278 A EP 07847278A EP 07847278 A EP07847278 A EP 07847278A EP 2126482 A2 EP2126482 A2 EP 2126482A2
Authority
EP
European Patent Office
Prior art keywords
expansion valve
refrigerant
compartments
evaporator
refrigeration
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
Application number
EP07847278A
Other languages
German (de)
English (en)
Other versions
EP2126482B1 (fr
Inventor
Peter Bauer
Matthias Mrzyglod
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
Priority to EP11190861A priority Critical patent/EP2426434A1/fr
Publication of EP2126482A2 publication Critical patent/EP2126482A2/fr
Application granted granted Critical
Publication of EP2126482B1 publication Critical patent/EP2126482B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F25B5/04—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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same 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
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/062—Capillary expansion 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
    • 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
    • F25B2400/16—Receivers
    • 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
    • F25B2600/2513—Expansion 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
    • 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

Definitions

  • the invention relates to a refrigerator with at least two thermally separated compartments, the evaporator are together with a compressor and a condenser in a refrigeration circuit and are acted upon by the compressor at a signaling of a refrigeration demand in the subjects with liquid refrigerant, wherein the contribution to refrigeration refrigerant amount is controllable. Furthermore, the invention relates to a method suitable for operating this refrigerated appliance.
  • a reservoir for temporary storage of liquid refrigerant is provided in the refrigerant circuit in front of a branch leading to the evaporators. From this it is possible to introduce additional refrigerant into the refrigerant circuit in a targeted manner by heating the reservoir in the event of an increased demand for refrigerant, in particular during simultaneous operation of both evaporators.
  • the refrigerant to be introduced into the evaporator is withdrawn from the condenser in accordance with its need for one or at the same time at several removal points.
  • variable amount of refrigerant energy-consuming storage means or inefficiently used condenser can be used.
  • the parallel arrangement of several evaporators due to the dual design of the injection system (valve, throttle capillary, injection point) leads to significant additional costs compared to single circuits.
  • the object of the invention is to find a cost-effective refrigerated cabinets with at least two thermally separated compartments and a suitable method for operating this cabinet in which a subject-specific temperature control using only a single common refrigeration cycle and given a uniform, modular production of the evaporator components is possible ,
  • each of these compartments is associated with an evaporator.
  • an expansion valve and these evaporators are connected in series in a refrigerant circuit.
  • at least two states with different non-vanishing flow coefficients can be set on the expansion valve.
  • the invention is thus based on a targeted change in the flow coefficient of an expansion valve in the refrigerant circuit of a refrigerated cabinet.
  • the refrigerant flow through the evaporator of the refrigerator can be changed specifically.
  • this causes a change in the ratio of liquid to gaseous refrigerant in the individual evaporators, and thus a change in the cooling capacity available in the evaporators.
  • the dimensions of the individual evaporators no longer exist, as was previously the case with refrigerated cabinets connected in series Evaporators usual, is determined by the expected ratio of the cooling capacities required in the individual subjects.
  • the evaporators can therefore be sized large in terms of optimum energy efficiency.
  • the evaporator of the cabinet by the invention can be independent of the refrigeration demand in the individual subjects free / dimension, opens up the potential profitable Mehrzonenkühl conjug produce whose components (especially evaporator) can be used uniformly (modular) in large quantities and In this case, the advantages of known from the prior art cooling furniture opens in terms of energy efficiency and controllability of the subjects.
  • the expansion valve In order to enable a targeted control or regulation of the refrigerant flow through the evaporator, it is conceivable on the one hand to design the expansion valve such that its flow coefficient is infinitely adjustable. On the other hand, it is also very possible to carry out the expansion valve with switchable discrete flow coefficients. Such a discrete switchability is particularly useful in embodiments of refrigerated furniture, which have a few thermally separated compartments.
  • thermoly separated compartments of the refrigerator temperature sensor are connected to an evaluation circuit for signaling a refrigeration demand in the individual compartments, this evaluation circuit forming part of a temperature control. If this Temperature control is signaled by one of the temperature sensor in at least one of the compartments of the refrigerator furniture a refrigeration demand, is set by the flow coefficient of the expansion valve so that the refrigerant flowing through it is preferably evaporated in the compartment in which the refrigeration demand was detected.
  • Fig. 1 is a refrigerated cabinet with an expansion valve according to the present invention
  • Fig. 2 possible embodiments of a usable in the refrigerator, three-stage switchable expansion valve.
  • FIG. 1 a refrigeration cabinet with only two compartments was used to simplify the illustration.
  • the invention is not limited to such an embodiment, but can be transferred by expert action thereof on cooling furniture with any number of subjects.
  • Fig. 1 shows a cooling cabinet 20, which has two compartments 21, 21 ', which are to be regulated to different temperatures. Each of the compartments 21, 21 'is associated with an evaporator 2, 2'. These evaporators 2, 2 'lie in a refrigerant circuit 1 through which refrigerant flows in series behind a compressor 3, a condenser 4 and an expansion valve 5.
  • Each of the compartments 21, 21 ' is associated with a temperature sensor 12, 12'.
  • These temperature sensors 12, 12 ' are connected to an evaluation circuit 1 1 for signaling a refrigeration demand, which forms part of a temperature control 10.
  • the temperature control 10 turns on a control line 14, the compressor 3 when in one of the subjects refrigeration demand is detected, and off again when no more refrigeration demand is detected.
  • the temperature control 10 controls in the signaling of a refrigeration demand in at least one compartment 12, 12 'via a control line 13, the expansion valve 5 to set depending on the detected refrigeration demand whose flow coefficient.
  • the temperature control 10 at the expansion valve 5 will enter one of two discrete non-zero values of the flow coefficient, namely a low refrigeration requirement in the compartment 21' and a high value Refrigeration demand in compartment 21.
  • the passage coefficient of the expansion valve 5 is set small by the temperature control 10, more refrigerant is sucked through the compressor 3 from the evaporators 2, 2 ', as is introduced via the expansion valve 5 in the evaporator 2, 2'.
  • the pressure in the evaporators is low, the evaporation temperature accordingly low. In this way, the refrigerant evaporates only in the vicinity of its exit point from the expansion valve 5, in the evaporator 2 ', and essentially only the compartment 21' is cooled.
  • the passage coefficient of the expansion valve 5 is made large by the temperature control 10. Because of the Compressor 3 less refrigerant is sucked, as is introduced via the expansion valve 5 in the evaporator 2, 2 ', the pressure in the evaporator and, accordingly, the boiling point of the refrigerant increases. If it is higher than the temperature of the compartment 21 ', the refrigerant passes through the evaporator 2' without evaporating, and first evaporates in the evaporator 2 of the warmer compartment 21. In this way, substantially only the compartment 21 'is cooled.
  • a mean transmission coefficient can be selected if there is a simultaneous need for refrigeration in both compartments 21, 21 '. Then in each case a part of the refrigerant evaporates in the evaporator 21 'and the rest in the evaporator 21st
  • the same average transmission coefficient can be selected if the compartment 21 'has an unusually high refrigeration demand, for example during rapid freezing of newly stored refrigerated goods.
  • a refrigerator has three or more fans cooled by series-connected evaporators, and an expansion valve upstream of the evaporators in a refrigerant circuit is switchable between at least as many values of the transmission coefficient as there are compartments.
  • the values are each chosen such that, when one of these values is set, the evaporation of the refrigerant takes place predominantly in an evaporator assigned to this value.
  • the value of the passage coefficient assigned to an evaporator is the higher the further downstream the associated evaporator lies in the refrigerant circuit.
  • an expansion valve with continuously variable transmission coefficient can be used. Particularly simple and sufficient for most applications are expansion valves where only a small number of discrete values of the transmission coefficient are adjustable.
  • FIG. 2 In the case of the refrigerated cabinet 20 outlined in FIG. 1, which only has two compartments 21, 21 'to be cooled, it is sufficient if two different non-vanishing transmission coefficients of the expansion valve 5 are adjustable. In this way, a very cost-effective temperature control can be realized profitably.
  • Fig. 2 three possible embodiments of this suitable expansion valve 5 are shown. All embodiments are the same splitting (for example by means of T-piece) of the main line 31 of the refrigerant circuit at the entrance to the expansion valve 5 in two parallel conduit paths. After this splitting, these two conduction paths are fed to a blocking member 30. This locking member 30, z. B.
  • a directional control valve has a first switching stage, in which both conduction paths are shut off, a second switching stage, in which one of the two conduction paths open and the other is shut off, and a third switching stage, in which the other conduction path is open, wherein the a conduction path in this third switching stage may be open or disabled.
  • a capillary tube 34 At the exit of the locking member 30 is a capillary tube 34, which opens in a conventional manner directly into the evaporator 21 '.
  • the above-mentioned parallel-guided line paths comprise capillary tubes 32, 33 of different lengths and the same cross-section, which are connected upstream of the inputs of the blocking element 30.
  • the refrigerant flows through the capillary tube 32, the capillary tube 33 or through both parallel, resulting in each case different flow coefficients of the expansion valve 5.
  • a capillary tube 52 is provided on only one of the two line branches; the other leg 53 does not have a substantial one due to its short length or large cross-section
  • Line branch 53 this corresponds to a direct switching of the main line 31 to the capillary located at the output of the locking member 30 capillary 34.
  • the line branch 53 thus forms a bypass around the capillary tube 52nd
  • a multi-stage controllable expansion valve is not limited to the embodiments shown in FIG. 2.
  • Capillary tubes can be used in screens in an otherwise spacious refrigerant line.
  • More than two non-zero values of the flow coefficient can be realized by providing a four-position directional control valve corresponding to the four possible combinations of "open” and “locked” of the two branches, or by making the main line 31 in the expansion valve 5 more than two parallel, individually switchable line branches is split.

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)
EP07847278A 2006-12-22 2007-11-22 Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre Active EP2126482B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11190861A EP2426434A1 (fr) 2006-12-22 2007-11-22 Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006061091A DE102006061091A1 (de) 2006-12-22 2006-12-22 Kühlmöbel mit wenigstens zwei thermisch voneinander getrennten Fächern
PCT/EP2007/062709 WO2008077697A2 (fr) 2006-12-22 2007-11-22 Meuble de réfrigération pourvu d'au moins deux compartiments thermiquement séparés l'un de l'autre

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP11190861.2 Division-Into 2011-11-28

Publications (2)

Publication Number Publication Date
EP2126482A2 true EP2126482A2 (fr) 2009-12-02
EP2126482B1 EP2126482B1 (fr) 2012-03-14

Family

ID=39431661

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11190861A Withdrawn EP2426434A1 (fr) 2006-12-22 2007-11-22 Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre
EP07847278A Active EP2126482B1 (fr) 2006-12-22 2007-11-22 Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11190861A Withdrawn EP2426434A1 (fr) 2006-12-22 2007-11-22 Meuble de réfrigération comprenant deux compartiments thermiquement séparés l'un de l'autre

Country Status (8)

Country Link
US (1) US20100089079A1 (fr)
EP (2) EP2426434A1 (fr)
CN (1) CN101568773B (fr)
AT (1) ATE549585T1 (fr)
DE (1) DE102006061091A1 (fr)
ES (1) ES2381655T3 (fr)
RU (1) RU2009126091A (fr)
WO (1) WO2008077697A2 (fr)

Cited By (1)

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DE102012211270A1 (de) 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einer verstellbaren Drosselung

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DE102011004107A1 (de) * 2011-02-15 2012-08-16 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit ungeregelten Expansionsventilen
DE102011006856A1 (de) * 2011-04-06 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit Kältemittelrohrleitungen
CH704974A1 (de) * 2011-05-18 2012-11-30 Bs2 Ag Expansionsapparat für Wärmepumpen.
US10266034B2 (en) * 2011-06-16 2019-04-23 Hamilton Sundstrand Corporation Heat pump for supplemental heat
DE102011079206A1 (de) * 2011-07-14 2013-01-17 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit mehreren Kammern
DE102012020896A1 (de) * 2011-10-26 2013-05-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
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US20150075212A1 (en) * 2013-09-16 2015-03-19 The Coca-Cola Company Carbon Dioxide Refrigeration System with a Multi-Way Valve
DE102013223737A1 (de) * 2013-11-20 2015-05-21 BSH Hausgeräte GmbH Einkreis-Kältegerät
US9791188B2 (en) * 2014-02-07 2017-10-17 Pdx Technologies Llc Refrigeration system with separate feedstreams to multiple evaporator zones
CN105202838B (zh) * 2015-10-19 2017-07-28 广东美的暖通设备有限公司 多联机系统及其中间压力控制方法
DE102016224283A1 (de) * 2016-12-06 2018-06-07 Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. Expansionsventil
WO2019044661A1 (fr) * 2017-08-29 2019-03-07 東芝キヤリア株式会社 Système de climatisation de type multiple et unité intérieure
DE102018202008A1 (de) * 2018-02-08 2019-08-08 BSH Hausgeräte GmbH Kombinationskältegerät
BR102018011553A2 (pt) * 2018-06-07 2019-12-10 Embraco Ind De Compressores E Solucoes Em Refrigeracao Ltda método e sistema de controle de um sistema de refrigeração e equipamento de refrigeração
DE102019112093A1 (de) * 2018-07-12 2020-01-16 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102019202649A1 (de) * 2019-02-27 2020-08-27 BSH Hausgeräte GmbH Kältegerät
DE102019218352A1 (de) * 2019-11-27 2021-05-27 BSH Hausgeräte GmbH Kältegerät mit variabel nutzbarem Fach
CN112944775A (zh) * 2021-02-10 2021-06-11 西安交通大学 一种低温冰箱

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DE102012211270A1 (de) 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einer verstellbaren Drosselung

Also Published As

Publication number Publication date
US20100089079A1 (en) 2010-04-15
ATE549585T1 (de) 2012-03-15
CN101568773A (zh) 2009-10-28
RU2009126091A (ru) 2011-01-27
EP2426434A1 (fr) 2012-03-07
WO2008077697A3 (fr) 2008-09-04
WO2008077697A2 (fr) 2008-07-03
CN101568773B (zh) 2012-07-25
ES2381655T3 (es) 2012-05-30
DE102006061091A1 (de) 2008-06-26
EP2126482B1 (fr) 2012-03-14

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