EP2379960A2 - Refrigerator having a defrost heater - Google Patents
Refrigerator having a defrost heaterInfo
- 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- Withdrawn
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008054935A DE102008054935A1 (en) | 2008-12-18 | 2008-12-18 | Refrigerating appliance with a defrost heater |
PCT/EP2009/065748 WO2010078998A2 (en) | 2008-12-18 | 2009-11-24 | Refrigerator having a defrost heater |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2379960A2 true EP2379960A2 (en) | 2011-10-26 |
Family
ID=42193922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09795944A Withdrawn EP2379960A2 (en) | 2008-12-18 | 2009-11-24 | Refrigerator having a defrost heater |
Country Status (8)
Country | Link |
---|---|
US (1) | US9534826B2 (en) |
EP (1) | EP2379960A2 (en) |
JP (1) | JP2012513010A (en) |
KR (1) | KR20110103938A (en) |
CN (1) | CN102257336B (en) |
DE (1) | DE102008054935A1 (en) |
RU (1) | RU2504721C2 (en) |
WO (1) | WO2010078998A2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011084826A1 (en) | 2011-10-19 | 2013-04-25 | BSH Bosch und Siemens Hausgeräte GmbH | Cold apparatus e.g. household cold apparatus, for e.g. storing food and/or beverages at certain temperature in e.g. home, has valve selectively connecting supply line to vaporizer or another valve and outlet with compressor |
DE102011084897A1 (en) | 2011-10-20 | 2013-04-25 | BSH Bosch und Siemens Hausgeräte GmbH | Cooling apparatus for storing food in warehouse, has vaporizers for cooling two compartments by coolant, respectively, where one of vaporizers is provided for liquefaction of coolant vaporized by other vaporizer during de-icing operation |
US9816745B2 (en) * | 2012-11-30 | 2017-11-14 | Lennox Industries Inc. | Ice sensor for a heat pump |
RU2547438C1 (en) * | 2014-01-21 | 2015-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кемеровский технологический институт пищевой промышленности" | Cooled showcase for display of confectionary goods |
KR20180052284A (en) | 2016-11-10 | 2018-05-18 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
CN110094931B (en) * | 2019-05-30 | 2021-08-17 | 海信(山东)冰箱有限公司 | Refrigerator temperature control method and device and refrigerator |
DE102020210411A1 (en) * | 2020-08-17 | 2022-02-17 | BSH Hausgeräte GmbH | Defrosting an evaporator of a refrigerator |
DE102021208510A1 (en) | 2021-08-05 | 2023-02-09 | BSH Hausgeräte GmbH | Method for operating a refrigeration device and refrigeration device with a defrost heater |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU553417A1 (en) * | 1973-12-17 | 1977-04-05 | Предприятие П/Я Г-4778 | Fridge |
US3899896A (en) * | 1974-10-15 | 1975-08-19 | Texas Instruments Inc | Automatic defrosting control system |
US3898860A (en) * | 1974-10-15 | 1975-08-12 | Texas Instruments Inc | Automatic defrosting control system |
DE3001019A1 (en) * | 1980-01-12 | 1981-07-23 | Danfoss A/S, 6430 Nordborg | DEFROSTING DEVICE FOR THE EVAPORATOR OF A REFRIGERATION SYSTEM |
US4432211A (en) * | 1980-11-17 | 1984-02-21 | Hitachi, Ltd. | Defrosting apparatus |
JPH0673443B2 (en) * | 1986-02-19 | 1994-09-21 | ホシザキ電機株式会社 | Defroster |
EP0285690A1 (en) | 1987-04-08 | 1988-10-12 | Viessmann Werke GmbH & Co. | Process and apparatus for the temperature dependent defrosting of cooling plants according to demand |
DE3804267C1 (en) * | 1988-02-11 | 1989-02-23 | Friedhelm 5920 Bad Berleburg De Meyer | |
US4974417A (en) * | 1988-10-12 | 1990-12-04 | Honeywell Inc. | Heat pump defrosting operation |
US5187084A (en) * | 1990-06-22 | 1993-02-16 | The Dow Chemical Company | Automatic air temperature cycler and method of use in polymerose chain reaction |
US5379608A (en) * | 1992-03-24 | 1995-01-10 | Fuji Electric Co., Ltd. | Defrosting control unit for showcases |
US5332028A (en) | 1993-03-12 | 1994-07-26 | Carrier Corporation | Method and apparatus for controlling supplemental electric heat during heat pump defrost |
JPH10318649A (en) * | 1997-05-15 | 1998-12-04 | Samsung Electron Co Ltd | Refrigerator provided with shutter device preventing air flow between evaporator and cooling chamber |
KR100271974B1 (en) * | 1998-08-31 | 2000-11-15 | 전주범 | De-frost control method |
JP3636602B2 (en) * | 1998-09-16 | 2005-04-06 | 株式会社東芝 | refrigerator |
CA2284234C (en) * | 1998-10-01 | 2003-09-16 | Samsung Electronics Co., Ltd. | Method and apparatus for predicting power consumption of refrigerator having defrosting heater |
WO2000026590A1 (en) | 1998-10-31 | 2000-05-11 | Daewoo Electronics Co., Ltd. | Defrost control method for use in a refrigerator |
US6993418B2 (en) * | 1999-03-16 | 2006-01-31 | Sigma Systems Corporation | Method and apparatus for latent temperature control for a device under test |
US6490876B2 (en) * | 2000-02-15 | 2002-12-10 | Whirlpool Corporation | Method and apparatus for de-icing dehumidifier |
DE60030971T2 (en) * | 2000-08-18 | 2007-06-14 | Ranco Inc. Of Delaware, Wilmington | Control device and method for controlling defrosting in a refrigerator |
RU2249163C2 (en) * | 2003-06-09 | 2005-03-27 | Открытое акционерное общество "Егоршинский радиозавод" | Timer for refrigerator |
US20050161327A1 (en) * | 2003-12-23 | 2005-07-28 | Michele Palmieri | Microfluidic device and method for transporting electrically charged substances through a microchannel of a microfluidic device |
US7153024B2 (en) * | 2004-01-28 | 2006-12-26 | Denso Corporation | Sensor and temperature sensor capable of automatic installation |
US7860377B2 (en) * | 2005-04-22 | 2010-12-28 | Shell Oil Company | Subsurface connection methods for subsurface heaters |
US7739880B2 (en) * | 2006-09-18 | 2010-06-22 | Daikin Industries, Ltd. | Compressor and air conditioner |
US7589520B2 (en) * | 2006-12-05 | 2009-09-15 | Delta Design, Inc. | Soak profiling |
US8590326B2 (en) * | 2007-10-09 | 2013-11-26 | Panasonic Corporation | Refrigeration cycle apparatus |
CN102016462B (en) * | 2008-04-28 | 2013-07-10 | 阿莫绿色技术有限公司 | Defrosting heater using strip type plane heating element, manufacturing method thereof and defrosting device using the same |
-
2008
- 2008-12-18 DE DE102008054935A patent/DE102008054935A1/en not_active Withdrawn
-
2009
- 2009-11-24 US US13/131,609 patent/US9534826B2/en not_active Expired - Fee Related
- 2009-11-24 EP EP09795944A patent/EP2379960A2/en not_active Withdrawn
- 2009-11-24 RU RU2011124741/13A patent/RU2504721C2/en not_active IP Right Cessation
- 2009-11-24 KR KR1020117011798A patent/KR20110103938A/en not_active Application Discontinuation
- 2009-11-24 CN CN200980151152.9A patent/CN102257336B/en not_active Expired - Fee Related
- 2009-11-24 WO PCT/EP2009/065748 patent/WO2010078998A2/en active Application Filing
- 2009-11-24 JP JP2011541276A patent/JP2012513010A/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2010078998A2 * |
Also Published As
Publication number | Publication date |
---|---|
RU2504721C2 (en) | 2014-01-20 |
US20110225993A1 (en) | 2011-09-22 |
WO2010078998A3 (en) | 2011-03-03 |
KR20110103938A (en) | 2011-09-21 |
US9534826B2 (en) | 2017-01-03 |
WO2010078998A2 (en) | 2010-07-15 |
RU2011124741A (en) | 2013-01-27 |
CN102257336A (en) | 2011-11-23 |
DE102008054935A1 (en) | 2010-06-24 |
JP2012513010A (en) | 2012-06-07 |
CN102257336B (en) | 2014-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010078998A2 (en) | Refrigerator having a defrost heater | |
DE102017213864A1 (en) | Control method for a refrigerator and refrigerator using such a control method | |
EP2059733A1 (en) | Refrigeration machine and operating method for it | |
WO2011020800A2 (en) | Refrigerator, in particular a household refrigerator, and method for operating such a refrigerator | |
EP0328151B1 (en) | Heating control method, particularly for a thawing device in a refrigeration installation | |
DE102008060899A1 (en) | Method for adjusting characteristic variable for air conditioning in cooking chamber of rational combi steamer in industrial kitchen, involves changing characteristic variable as function of period of time due to detection of missing load | |
EP2174199B1 (en) | Method for the energy-saving control of a food processing process or a processing chamber cleaning process and cooking device used therefore | |
WO2010106001A2 (en) | Refrigeration device and method for cooling a refrigeration device | |
EP1492385B1 (en) | Method and device of determination of heating processus | |
EP2570732B1 (en) | Method for cooking a food product in a cooking oven | |
EP2883011A1 (en) | Domestic refrigerator and method for operating a heating device of a domestic refrigerator | |
WO2014023689A1 (en) | Refrigeration device and operating method therefor | |
DE102011012109A1 (en) | Method for defrosting air-to-brine heat exchanger of heat pump i.e. compression heat pump, involves detecting difference between air temperature and temperature of brine, and defrosting heat exchanger when difference exceeds preset value | |
WO2008025653A1 (en) | Refrigerator with forced-ventilation evaporator | |
DE102005035564A1 (en) | Household baking-oven controlling method involves collecting and evaluating air humidity in baking muffle as baking-or-cooking parameter during cooking process, and adjusting air humidity by influence of air removal or air supply of muffle | |
EP2776768B1 (en) | Refrigeration device | |
DE102008052952A1 (en) | Refrigerator and/or freezer for e.g. wine cabinet, has controlling or regulating unit implemented such that heating device is activated by unit if detected temperature or value corresponds to threshold value or falls below threshold value | |
EP2607810B1 (en) | Method for operating a heat pump device | |
DE102015211961A1 (en) | Refrigeration appliance and operating method for it | |
DE102021214438A1 (en) | Method for operating a refrigeration device and refrigeration device | |
WO2011047989A1 (en) | Hot air system for a household appliance for preparing food, household appliance having such a hot air system, and method for operating a hot air system | |
DE102012002654A1 (en) | Refrigerator and/or freezer e.g. chest freezer, has regulating unit that switches ON and/or OFF of compressor for temperature control within refrigerated compartment in response to correlated parameters of temperature in compartment | |
DE102010016225A1 (en) | Cooking apparatus e.g. cooker, operating method, involves switching off heat source when operation profile is interrupted, and displaying current state of control element on display integrated into switch of control element | |
EP2608635A1 (en) | Cooking device and method for operating same | |
DE102012007826A1 (en) | Fridge and / or freezer |
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: 20110905 |
|
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 SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BSH HAUSGERAETE GMBH |
|
17Q | First examination report despatched |
Effective date: 20180322 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20180810 |
|
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: 20181221 |