EP2379960A2 - Appareil frigorifique doté d'un chauffage de dégivrage - Google Patents

Appareil frigorifique doté d'un chauffage de dégivrage

Info

Publication number
EP2379960A2
EP2379960A2 EP09795944A EP09795944A EP2379960A2 EP 2379960 A2 EP2379960 A2 EP 2379960A2 EP 09795944 A EP09795944 A EP 09795944A EP 09795944 A EP09795944 A EP 09795944A EP 2379960 A2 EP2379960 A2 EP 2379960A2
Authority
EP
European Patent Office
Prior art keywords
temperature
defrosting
defrost
time
predetermined
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Withdrawn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
EP09795944A
Other languages
German (de)
English (en)
Inventor
Harald Joksch
Panagiotis Fotiadis
Jochen HÄRLEN
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 EP2379960A2 publication Critical patent/EP2379960A2/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Withdrawn legal-status Critical Current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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D2700/10—Sensors measuring the temperature of the evaporator

Definitions

  • the present invention relates to the field of refrigeration appliances, in particular the field of household refrigerators.
  • a defrost duration is controlled by a mounted, for example, on the evaporator of the refrigerator temperature sensor which detects a predefined defrost end temperature, when reached the defrost heater off or remains turned on for a further minimum defrosting, the defrost heater are switched off within the mecanicabtauzeit only when exceeding a safety temperature threshold can.
  • the heat given off by the defrost heater may not distribute evenly throughout the evaporator.
  • the undesired ice is not defrosted at a location farther from the temperature sensor, resulting in uneven defrost.
  • the invention is based on the recognition that a more efficient defrost can be realized by providing at least two different predetermined defrost temperatures within the same defrost operation. For example, at the beginning of the defrosting process, for example, a higher temperature can be set, so that a secure defrost can be achieved with a short defrost duration in the entire evaporator. Subsequently, for example, a lower defrosting temperature can be set, which ensures a uniform heat distribution in the evaporator for a longer defrost duration. As a result, energy-efficient uniform defrosting is achieved.
  • the invention relates in one aspect to a refrigeration appliance, in particular a household refrigeration appliance, with an evaporator, which is subjected from time to time to defrosting a defrosting, by a arranged at least in the vicinity of the evaporator temperature sensor after reaching a predetermined temperature by the temperature sensor or after a is switched off, the defrost heater is configured to generate at least two different defrosting temperatures according to a predetermined Abtautemperaturverlauf during a defrosting operation.
  • the predetermined defrost temperature history may provide for a higher defrost temperature to be set at the beginning of the defrost cycle and for a second, lower defrost temperature to be set after the lapse of a predetermined time interval, which may be maintained until the end of defrost.
  • the predetermined defrost temperature history includes a first defrost temperature portion having a first average defrost temperature, an intermediate defrost temperature portion following the first defrost temperature portion, in particular, a defrost temperature ramp portion, and a defrost temperature portion
  • the intermediate defrosting temperature section is falling, in particular steadily decreasing.
  • the first defrost temperature section has a higher temperature than the third defrost temperature section.
  • the defrost temperature of the first defrost temperature section and the second defrost temperature section is at least approximately constant.
  • a control device for controlling the defrost heater which is designed to generate the first defrost temperature within a first predetermined time interval and within a second predetermined time interval to generate a falling linear defrost temperature until reaching the second constant defrost temperature.
  • the defrost temperature history includes a plurality of different constant defrost temperatures with ramped rising or falling defrost temperature portions of predetermined duration of time interposed therebetween.
  • a control device is provided to carry out the defrosting process within a predetermined period of time.
  • the refrigeration appliance is designed as a Nofrost refrigeration appliance with an evaporator arranged outside a space to be cooled, which evaporator is designed in particular as a fin evaporator with a temperature sensor.
  • the invention relates in a further aspect to a method for controlling a
  • Defrosting a refrigerator with generating a first defrost temperature having a first temperature level for a first time period, changing the first defrost temperature to a second temperature level within a second time period, and maintaining the second temperature level as a second defrost temperature for a third time period.
  • the first defrosting temperature is reduced towards the second defrosting temperature, in particular continuously reduced.
  • Fig. 1 is a schematic block diagram of a defrost heater
  • Fig. 1 shows a block diagram of a defrost heater 101, which can be used for example in a household refrigerator.
  • the defrost heater 101 includes a defrost heater 103, a controller 105 and a temperature sensor 107.
  • the Temperature sensor 107 is provided to detect the actual defrost temperature and to supply it to the controller 105.
  • the control device 105 controls the defrost heater 103 according to a predetermined Abtautemperaturverlauf such that adjusts the predetermined Abtautemperaturverlauf temporally on the temperature sensor.
  • FIG. 2 illustrates a defrost temperature history with a linear, ramped, intermediate defrost temperature section 201, which connects a first constant defrost temperature 203 to a second, constant defrost temperature 205.
  • the first defrost temperature 203 has a temperature value T1 maintained until a time t1. Subsequently, the defrosting temperature is reduced until a time t2 at which the second constant defrosting temperature 205 with the temperature value T2 is reached.
  • the first constant defrosting temperature 203 is greater than the second constant defrosting temperature 205 and is set only for a period of time set, for example, at the beginning of the defrosting operation and for a short time, for example, 1 second, 2 seconds, 3 seconds, 5 seconds, 10 seconds or 30 s, is maintained.
  • the second defrosting temperature 205 is maintained, for example, until the end of the entire defrosting process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

L'invention concerne un appareil frigorifique, notamment un réfrigérateur ménager, comportant un évaporateur qui est soumis de temps en temps à un processus de dégivrage par un chauffage de dégivrage (101) qui est arrêté après un laps de temps défini ou par un capteur de température (107) disposé au moins à proximité de l'évaporateur, lorsqu'une température prédéterminée est atteinte, le chauffage de dégivrage (101) étant conçu pour générer, pendant un processus de dégivrage, au moins deux températures de dégivrage différentes correspondant à une courbe de température de dégivrage prédéterminée.
EP09795944A 2008-12-18 2009-11-24 Appareil frigorifique doté d'un chauffage de dégivrage Withdrawn EP2379960A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008054935A DE102008054935A1 (de) 2008-12-18 2008-12-18 Kältegerät mit einer Abtauheizung
PCT/EP2009/065748 WO2010078998A2 (fr) 2008-12-18 2009-11-24 Appareil frigorifique doté d'un chauffage de dégivrage

Publications (1)

Publication Number Publication Date
EP2379960A2 true EP2379960A2 (fr) 2011-10-26

Family

ID=42193922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09795944A Withdrawn EP2379960A2 (fr) 2008-12-18 2009-11-24 Appareil frigorifique doté d'un chauffage de dégivrage

Country Status (8)

Country Link
US (1) US9534826B2 (fr)
EP (1) EP2379960A2 (fr)
JP (1) JP2012513010A (fr)
KR (1) KR20110103938A (fr)
CN (1) CN102257336B (fr)
DE (1) DE102008054935A1 (fr)
RU (1) RU2504721C2 (fr)
WO (1) WO2010078998A2 (fr)

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DE102011084826A1 (de) 2011-10-19 2013-04-25 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit zwei Verdampfern
DE102011084897A1 (de) 2011-10-20 2013-04-25 BSH Bosch und Siemens Hausgeräte GmbH Enteisung eines Verdampfers in einem Kältegerät mit zwei Verdampfern
US9816745B2 (en) * 2012-11-30 2017-11-14 Lennox Industries Inc. Ice sensor for a heat pump
RU2547438C1 (ru) * 2014-01-21 2015-04-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кемеровский технологический институт пищевой промышленности" Охлаждаемая витрина для экспозиции кондитерских изделий
KR102723276B1 (ko) * 2016-11-10 2024-10-31 엘지전자 주식회사 냉장고 및 냉장고의 제어 방법
CN110094931B (zh) * 2019-05-30 2021-08-17 海信（山东）冰箱有限公司 一种冰箱温控方法及装置、冰箱
DE102020210411A1 (de) * 2020-08-17 2022-02-17 BSH Hausgeräte GmbH Abtauen eines Verdampfers eines Kältegeräts
DE102021208510A1 (de) 2021-08-05 2023-02-09 BSH Hausgeräte GmbH Verfahren zum Betrieb eines Kältegeräts und Kältegerät mit einer Abtauheizung
USD1116578S1 (en) 2024-04-15 2026-03-10 Carter-Hoffmann LLC Open warming container
CN119573297B (zh) * 2024-12-02 2025-11-28 珠海格力电器股份有限公司 热泵机组及其控制方法、装置、存储介质和程序产品

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Also Published As

Publication number Publication date
US20110225993A1 (en) 2011-09-22
CN102257336B (zh) 2014-06-18
JP2012513010A (ja) 2012-06-07
US9534826B2 (en) 2017-01-03
CN102257336A (zh) 2011-11-23
WO2010078998A3 (fr) 2011-03-03
WO2010078998A2 (fr) 2010-07-15
RU2011124741A (ru) 2013-01-27
DE102008054935A1 (de) 2010-06-24
RU2504721C2 (ru) 2014-01-20
KR20110103938A (ko) 2011-09-21

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