EP2796812A1 - Appareil de réfrigération et/ou de congélation - Google Patents

Appareil de réfrigération et/ou de congélation Download PDF

Info

Publication number
EP2796812A1
EP2796812A1 EP14165375.8A EP14165375A EP2796812A1 EP 2796812 A1 EP2796812 A1 EP 2796812A1 EP 14165375 A EP14165375 A EP 14165375A EP 2796812 A1 EP2796812 A1 EP 2796812A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
refrigerant
compressor
valve
cooling
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Withdrawn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
EP14165375.8A
Other languages
German (de)
English (en)
Inventor
Mattthias Wiest
Didier Siegel
Mario Straub
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen 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 Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2796812A1 publication Critical patent/EP2796812A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F25B31/00—Compressor arrangements
    • 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
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • 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
    • F25B2400/0409—Refrigeration circuit bypassing means for the 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2515—Flow valves

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one first and at least one second evaporator and at least one in the flow direction of the refrigerant downstream of the evaporator compressor.
  • the refrigerant circuit has two evaporators, which are assigned to different compartments.
  • FIG. 4 shows such known from the prior art arrangement.
  • the reference numeral 10 a compressor is characterized, which is followed by a condenser 20. Downstream of the condenser 20 are the evaporators 30, 40, of which the evaporator 30, the refrigerator part evaporator and the evaporator 40 is the Gefiertêtiereverdampfer.
  • Reference numeral 50 denotes a solenoid valve located on the pressure side of the compressor 10.
  • the two evaporators 30, 40 are flowed through in succession by refrigerant or only the freezer evaporator 40 is flowed through by refrigerant.
  • both evaporators 30, 40 are flowed through in succession by refrigerant, there is the disadvantage that comparatively warm refrigerant passes from the refrigerated part evaporator 30 into the freezer evaporator 40, which impairs its efficiency. If the evaporation temperature is lowered so much that a favorable evaporation temperature is present in the freezer compartment evaporator 40, there is the disadvantage that the evaporation temperature for the refrigerator compartment evaporator 30 is too low, which is also associated with disadvantages in terms of efficiency.
  • the present invention has the object of developing a refrigerator and / or freezer of the type mentioned in such a way that this has an efficiently operable and comparatively simple design refrigerant circuit.
  • a refrigerator and / or freezer with the features of claim 1. Thereafter, it is provided that at least a first suction line from the first evaporator to the compressor and at least one second suction line from the second evaporator to the compressor runs and that in the compressor at least one valve is arranged, which is so connected to one or both of the suction lines in that the flow of refrigerant through one or both of said suction lines can be changed by means of the valve.
  • the arrangement of the at least one valve in or at the intake of the compressor can be dispensed with an arrangement of the solenoid valve in the lines of the refrigerant circuit and it eliminates solder joints that would otherwise be required for mounting the solenoid valve in the lines of the refrigerant circuit.
  • valve integration thus results in a simplification of the refrigerant circuit and thus a cost advantage over the known from the prior art solutions in which the valve is not arranged in the compressor.
  • first and the second evaporator in the refrigerant circuit are arranged such that the first evaporator is always flowed through by refrigerant regardless of the valve position and the second evaporator is not flowed through by refrigerant in at least one valve position.
  • the second evaporator can thus be operated in this valve position in the bypass.
  • the named first evaporator may be, for example, a freezer evaporator and the second evaporator may be, for example, a refrigerated part evaporator, resulting in the advantage of an efficient and energy-saving system.
  • the device can thus have at least one freezer compartment with at least one freezer evaporator associated therewith and at least one refrigerator compartment with at least one refrigerator compartment evaporator associated therewith, wherein the first evaporator is the freezer compartment evaporator and the second evaporator is the refrigerator compartment evaporator.
  • the first evaporator is the refrigerator part evaporator and the second evaporator and the freezer evaporator.
  • the term "cooling part” in this context means a conventional cooling part and / or a cold storage compartment. Cooling and / or freezing appliance according to one of the preceding claims, characterized in that the first and the second evaporator are connected in parallel in the refrigerant circuit. This embodiment makes it possible that either one or the other evaporator is flowed through by refrigerant or at correspondingly faster timing flow through both evaporators of refrigerant.
  • At least one, preferably exactly one capillary is provided and that in the flow direction of the refrigerant downstream of the capillary at least one branch line is provided, extending between the capillary and the first evaporator and between the capillary and the second evaporator.
  • upstream and downstream and "before” and “after” indicate the position of the individual components relative to each other in the flow direction of the refrigerant, as it results in the operation of the compressor.
  • the capillary there is exactly one or at least one capillary between the condenser and the evaporators, the capillary being associated with both evaporators, i. flows through both during operation of the first and during operation of the second evaporator of refrigerant.
  • the refrigerant line divides into a number of branch lines corresponding to the number of evaporators, with at least one of the branches leading to the evaporators in each case.
  • the invention also includes an embodiment in which at least one, preferably exactly one capillary is provided per evaporator in the flow direction of the refrigerant upstream of the evaporator, and that at least one branch line is provided in the flow direction of the refrigerant upstream of the capillaries and leads to the capillaries.
  • each evaporator not one or more common capillaries is provided, but it is associated with each evaporator at least one capillary.
  • the first and the second evaporator are arranged such that in the operating state in which an evaporator is flowed through by refrigerant and the other evaporator is shut off by the valve, the evaporator shut off by the valve is partially or completely emptied , If the operation of the compressor flows through one of the evaporators of refrigerant and the other evaporator is shut off by the valve arranged on the compressor, the refrigerant is sucked out of the "shut off" evaporator in this embodiment, which brings the advantage of an optimized defrost with it.
  • At least one liquid separator is arranged in at least one of the suction lines, which prevents the compressor from being exposed to liquid refrigerant and that the suction line is frosted.
  • valve is a solenoid valve and preferably a multi-way valve.
  • the solenoid valve Depending on the position of the solenoid valve, one or the other suction line can be released or shut off.
  • a multi-way valve the use of one or preferably a plurality of stop valves is possible and included before the invention.
  • stop valve which is preferably not used for temperature control.
  • the compressor is preferably a variable speed, preferably a variable speed compressor.
  • FIG. 1 shows by the reference numeral 10 a compressor into which two separate suction lines 12, 14 open.
  • a branching point 100 is provided downstream of the freezer compartment evaporator 40, of which firstly the suction line 12 and, secondly, a line 16 goes out, leading to the cooling part evaporator 30. Between the cooling part evaporator 30 and the compressor 10, the suction line 14 extends.
  • the refrigerant collector 50 In the suction line 12 is the refrigerant collector 50, which prevents liquid refrigerant from entering the suction line 12.
  • the compressor 10 is an unillustrated solenoid valve into which the ends of the suction lines 12, 14 open.
  • the solenoid valve is thus not arranged in the suction line, but is located directly in the compressor 10 in its intake.
  • this is the only valve of the refrigerant circuit, ie, neither in the conduit system upstream nor downstream of the compressor, a further valve is arranged.
  • the valve When the compressor starts, the valve is controlled so that the refrigerant flows through the cooling part evaporator 30.
  • the refrigerant evaporates in the refrigerated compartment evaporator 30, because there the temperature level is significantly higher than in freezer compartment evaporator 40, so that little or no liquid refrigerant gets to the compressor.
  • valve is switched in the compressor so that only the freezer evaporator 40, but not the cooling part evaporator 30 is flowed through by refrigerant, there is an optimized defrost in the cooling part evaporator 30, since this is sucked empty (pump-down).
  • FIG. 2 shows an embodiment in which the two evaporators 30, 40 are connected in parallel. Also in this embodiment, a solenoid valve is disposed neither in the pressure line, nor in the suction line. Rather, in this embodiment, the solenoid valve is located directly in the intake of the compressor 10th
  • each evaporator 30, 40 can be flowed through by refrigerant.
  • each evaporator can be optimized for itself and adapted to the prevailing refrigerator temperature.
  • both evaporators can be flowed through at the same time, which is also included in the invention.
  • variable-speed compressor 10 is advantageous.
  • the cooling capacity and thus the compressor speed can be adapted to the compartment to be cooled. While in the case of a freezer part, a larger cooling capacity is necessary, the cooling part can be operated with a smaller cooling capacity and thus with a lower speed of the compressor.
  • the system also offers the advantage that a free-hanging evaporator can be used more easily in the cooling part and the cooling in the cooling part by the separate circuits is particularly advantageous.
  • one of the evaporators can be taken out of operation, e.g. the freezer evaporator, while the other evaporator can continue to operate.
  • FIG. 2 shown system offers in addition to the integration of the valve in the compressor the advantage that only one capillary 200 is required, which brings cost advantages, and that can be omitted by the elimination of a solenoid valve in the piping solder joints and that an optimized defrost can be done.
  • the line branches to the evaporators 30, 40, so that refrigerant can be supplied to both the evaporator 30 and the evaporator 40.
  • the other sealed off by the valve of the compressor evaporator can be sucked empty, resulting in an optimized defrost.
  • a conceivable control algorithm is that, for example, a first compartment requiring cooling is cooled and the evaporator associated therewith is flowed through until the desired temperature has been reached in the first compartment and a compartment requiring a second cooling requirement is cooled and accordingly the evaporator associated therewith is flowed through until the desired temperature is reached in the second compartment.
  • the control of the at least one valve of the compressor can be effected by a control or regulating unit, not shown, which switches the valve in response to the prevailing refrigeration demand and thus allows or prevents a flow through the evaporator with refrigerant.

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)
EP14165375.8A 2013-04-22 2014-04-22 Appareil de réfrigération et/ou de congélation Withdrawn EP2796812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006902 2013-04-22
DE102013011050.5A DE102013011050A1 (de) 2013-04-22 2013-07-02 Kühl- und/oder Gerfriergerät

Publications (1)

Publication Number Publication Date
EP2796812A1 true EP2796812A1 (fr) 2014-10-29

Family

ID=50513110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14165375.8A Withdrawn EP2796812A1 (fr) 2013-04-22 2014-04-22 Appareil de réfrigération et/ou de congélation

Country Status (2)

Country Link
EP (1) EP2796812A1 (fr)
DE (1) DE102013011050A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109689406A (zh) * 2016-10-19 2019-04-26 宝马股份公司 用于机动车的冷却装置以及具有这种冷却装置的机动车
CN110290730A (zh) * 2017-01-12 2019-09-27 艾默生环境优化技术有限公司 用于微增压器型超市制冷体系的控制、诊断和结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123497A (en) * 1936-11-11 1938-07-12 Westinghouse Electric & Mfg Co Two-temperature refrigerating apparatus
US5038827A (en) * 1990-10-25 1991-08-13 Sporlan Valve Company Shuttle valve for a refrigeration system
US5156016A (en) * 1992-02-03 1992-10-20 General Electric Company Pressure controlled switching valve for refrigeration system
DE102008047818A1 (de) * 2008-08-22 2010-02-25 Liebherr-Hausgeräte Lienz Gmbh Kühl-und/oder Gefriergerät sowie Verfahren zum Betreiben eines Kühl-und/oder Gefriergerätes
EP2581690A2 (fr) * 2010-04-26 2013-04-17 Whirlpool S.A. Système de réfrigération d'un réfrigérateur et système d'aspiration pour un fluide de compresseur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123497A (en) * 1936-11-11 1938-07-12 Westinghouse Electric & Mfg Co Two-temperature refrigerating apparatus
US5038827A (en) * 1990-10-25 1991-08-13 Sporlan Valve Company Shuttle valve for a refrigeration system
US5156016A (en) * 1992-02-03 1992-10-20 General Electric Company Pressure controlled switching valve for refrigeration system
DE102008047818A1 (de) * 2008-08-22 2010-02-25 Liebherr-Hausgeräte Lienz Gmbh Kühl-und/oder Gefriergerät sowie Verfahren zum Betreiben eines Kühl-und/oder Gefriergerätes
EP2581690A2 (fr) * 2010-04-26 2013-04-17 Whirlpool S.A. Système de réfrigération d'un réfrigérateur et système d'aspiration pour un fluide de compresseur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109689406A (zh) * 2016-10-19 2019-04-26 宝马股份公司 用于机动车的冷却装置以及具有这种冷却装置的机动车
US11186136B2 (en) 2016-10-19 2021-11-30 Bayerische Motoren Werke Aktiengesellschaft Cooling apparatus for a motor vehicle, and motor vehicle having such a cooling apparatus
CN110290730A (zh) * 2017-01-12 2019-09-27 艾默生环境优化技术有限公司 用于微增压器型超市制冷体系的控制、诊断和结构

Also Published As

Publication number Publication date
DE102013011050A1 (de) 2014-10-23

Similar Documents

Publication Publication Date Title
EP2906882B1 (fr) Refrigerateur avec deux evaporateurs
WO2009141282A2 (fr) Appareil frigorifique à stockage du fluide frigorigène dans le condenseur et procédé correspondant
EP1876402A2 (fr) Pompe à chaleur avec un dispositif de thermorégulation
EP2005076A1 (fr) Procédé pour faire fonctionner un appareil frigorifique à évaporateurs montés en parallèle et appareil frigorifique associé
DE102011109322A1 (de) Kälteanlage für ein Fahrzeug sowie Verfahren zur Steuerung einer Kälteanlage für ein Fahrzeug
WO2017140488A1 (fr) Appareil de froid pourvu d'une pluralité de compartiments de stockage
EP2976583A1 (fr) Appareil de froid et soupape de distribution d'air associée
EP1050726B1 (fr) Système frigorifique
EP2796812A1 (fr) Appareil de réfrigération et/ou de congélation
DE102015207838A1 (de) Kombinationskältegerät und Betriebsverfahren dafür
WO2017153141A1 (fr) Appareil frigorifique avec compartiment de congélation et circuit de réfrigérant, et procédé de fonctionnement d'un appareil frigorifique
DE69120376T2 (de) Kühlsystem
WO2016034461A1 (fr) Appareil de froid comprenant plusieurs compartiments de stockage
WO2019015891A1 (fr) Dispositif de réfrigération comportant un circuit de réfrigération
DE102009017765A1 (de) Kühl- und/oder Gefriergerät
WO2016034446A1 (fr) Appareil frigorifique et machine frigorifique destinée audit appareil
DE102011004107A1 (de) Haushaltskältegerät mit ungeregelten Expansionsventilen
WO2016034443A1 (fr) Appareil frigorifique et machine frigorifique destinée audit appareil
DE102015211963A1 (de) Kältegerät
DE202007006632U1 (de) Kühl- und/oder Gefriergerät
DE19832682A1 (de) Abtaueinrichtung für einen Verdampfer einer Wärmepumpe oder eines Klimageräts
DE102018002120A1 (de) Einrichtung zum Temperieren von durch Filtern gereinigten flüssigen Mediums
DE102017000060A1 (de) Kühl- und/oder Gefriergerät
DE102014211132A1 (de) Kältegerät und Kältemaschine dafür
DE102015014759A1 (de) Kühl- und/oder Gefriergerät

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

17P Request for examination filed

Effective date: 20140422

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL 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 RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150429

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20171213

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

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: 20211103