EP2085723B1 - Verfahren zum Betreiben eines Kühl- und/oder Gefriergerätes sowie nach einem solchen Verfahren betriebenes Kühl- und/ oder Gefriergerät - Google Patents

Verfahren zum Betreiben eines Kühl- und/oder Gefriergerätes sowie nach einem solchen Verfahren betriebenes Kühl- und/ oder Gefriergerät Download PDF

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Publication number
EP2085723B1
EP2085723B1 EP09001031.5A EP09001031A EP2085723B1 EP 2085723 B1 EP2085723 B1 EP 2085723B1 EP 09001031 A EP09001031 A EP 09001031A EP 2085723 B1 EP2085723 B1 EP 2085723B1
Authority
EP
European Patent Office
Prior art keywords
compartments
temperature
value
compartment
accordance
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.)
Expired - Fee Related
Application number
EP09001031.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2085723A3 (de
EP2085723A2 (de
Inventor
Di Eugen Schmid
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 EP2085723A2 publication Critical patent/EP2085723A2/de
Publication of EP2085723A3 publication Critical patent/EP2085723A3/de
Application granted granted Critical
Publication of EP2085723B1 publication Critical patent/EP2085723B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control 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
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment

Definitions

  • the present invention relates to a method for operating a refrigerator and / or freezer with two or more than two compartments, each having at least one closable by a closure element opening through which the compartments are acted upon with cold air, wherein at least one temperature sensor for indirect or immediate detection of the respective temperature actual value is provided.
  • refrigerators or freezers which have a plurality of compartments, wherein the supply of cooled air to the compartments and the air return of heated air from the compartments is controlled by means of louvers.
  • devices are known in which each compartment with a different temperature associated with a louver.
  • subjects without lower temperature limit, such as freezing parts are provided, which are mitigkühlt when cooling request another compartment.
  • US 5,816,061 A discloses an apparatus and method according to the preamble of claim 1 for controlling the temperature in the refrigerated space of a refrigerator by supplying suitable cooled air to each of the refrigerators in accordance with the temperature in each of the refrigerators.
  • JP 2006 336972 A discloses a temperature control device for controlling the size of the passage area of the compartments in dependence on the temperature difference between a temperature detected by a sensor and a predefined setpoint temperature in each compartment.
  • the present invention has the object of developing a method of the type mentioned in such a way that the adjustment of the temperatures in the compartments is particularly energy efficient.
  • a temperature value (closing value) is defined, that the compartment with the smallest difference between actual temperature and closing value (temperature difference) is determined and that the closure element of this compartment is closed until its temperature difference is equal to or greater is the temperature difference of a compartment with a larger, preferably with the next larger temperature difference. It is conceivable, for example, that at a certain temperature value above the closing value, the temperature differences of the compartments are compared with open closure element and that then the closure element of the compartment is closed, in which the lowest temperature difference, that is the smallest distance between actual temperature and closing value.
  • the closure element of this already comparatively cold compartment is closed, the entire cold air is now the remaining subjects supplied with open closure element, which means that they undergo a relatively rapid cooling and the relatively cold compartment is not too cold.
  • the closure element of said compartment is closed until it is determined that its temperature difference is equal to or greater than that of another compartment.
  • the compartment in question is opened with the originally lowest temperature difference by opening the closure element when its temperature difference is equal to or greater than the temperature difference actual value to closing value of the compartment with the next larger temperature difference actual value to closing value.
  • the hysteresis can be for example 0.5 K.
  • a temperature range (opening corridor) is defined, that the evaporator is activated when the temperature in one of the compartments reaches or exceeds the upper value of the opening corridor and / or reaches the evaporator on temperature or exceeded.
  • the closure element of this compartment as well as the closure elements of the one or more further compartments are opened whose actual temperature values lie in the respective opening corridor.
  • the closure element of the compartment is opened, the temperature has reached or exceeded the upper limit of the opening corridor.
  • the closure elements of the compartments are opened whose actual temperature value lies in the respective opening corridor.
  • temperature sensor is to be construed broadly and includes every conceivable means which is capable of drawing conclusions about the temperature in the compartments. It is conceivable that one or more temperature sensors are provided in each or in some of the compartments. It is also conceivable that, alternatively or additionally, a temperature sensor is provided, which detects the evaporator temperature or another temperature, can be drawn on the conclusions about the temperatures in the compartments. In a further embodiment of the invention it is provided that the determination of the compartment with the lowest temperature difference and the closing of the closure element takes place only when the actual temperature has reached or fallen below a predetermined distance to the closing value. It is conceivable, for all compartments, the differences between the actual temperatures and the to determine the respective closing values.
  • the temperature differences that is to say the differences between the respective actual temperatures and closing values, of the compartments with opened closure elements are mutually connected be compared. Then the closure element of the compartment is closed with the lowest temperature difference.
  • the device has at least one fan, by means of which cold air can be introduced through said closable openings in the compartments.
  • the device may have at least one cooling air channel, wherein the fan is arranged such that it moves the air through the cooling air channel in the one or more compartments.
  • the cooling air channel can be limited for example by a vertical partition plate, which is located in the rear region of the device and which can form, for example, the rear wall of the compartment or compartments.
  • the fan is activated when the evaporator temperature reaches or falls below a threshold. It is conceivable, for example, that the fan is activated when the evaporator temperature is a predetermined value, for example 1 K below the temperature of the compartment, whose temperature has reached or exceeded the upper value of the opening corridor.
  • the closure elements of the compartments are opened, whose actual temperature reaches or exceeds the lower region of the opening corridor. Accordingly, if there are compartments whose actual temperature value is below the lower limit of the opening corridor, their closure elements initially remain closed. If the actual temperatures are the lower part of the opening corridor reach, the associated closure elements are opened, so that the compartments are charged with cold air.
  • the evaporator is deactivated when the Temperaturisteptept all compartments have reached their respective closing value.
  • the speed of the fan is reduced compared to the actual cooling operation.
  • the closure elements of the compartments whose closure elements were temporarily or permanently opened during the cooling process are now opened when the actual temperatures of all compartments have reached their respective closing value.
  • cold air is introduced into the compartments at reduced fan speed.
  • the fan is finally deactivated when the evaporator temperature reaches or exceeds a limit value.
  • the respective closure element is closed as soon as the respective actual temperature value or a characteristic value for the temperature reaches a desired value or exceeds it by a predetermined amount.
  • a temperature setpoint is predetermined and that the opening corridor and / or the closing value of the other compartments depends on the temperature setpoint. If, for example, with the setpoint setting of the compartment above arranged unchanged, the setpoint setting of a compartment below it is changed to "cold", the opening corridor and the closing value of the closure element of the upper compartment are corrected in the "warm” direction in order to control the to compensate for increased cooling by the return air flow from the lower compartment.
  • the present invention further relates to a refrigerator and / or freezer with the features of claim 15. Further details and advantages of the invention will be explained in more detail with reference to an embodiment shown in the drawing.
  • the sole figure shows a cooling device according to the present invention.
  • the cooling device according to the exemplary embodiment illustrated here has a cooling part 10 arranged at the top as well as a compartment ("biofresh variable") arranged underneath and a compartment 30 ("biofresh fix") underneath.
  • This arrangement is merely exemplary. Other arrangements of the compartments are conceivable.
  • the reference numeral 40 denotes a fan, which draws air from the compartment 10 and conveys it into the cooling air duct 50. In this is the evaporator 60 with evaporator sensor 62.
  • the evaporator cooler 62 outputs a characteristic of the temperature of the evaporator 60 temperature value.
  • a temperature sensor 12, 22, 32 is located in each of the compartments.
  • each of the compartments 10, 20, 30 can be connected to the cooling air channel 50 via an air flap or another closure element 14, 24, 34.
  • air damper 14, 24, 34 is open, air is accordingly introduced from the cooling air duct 50 into the respective compartment 10, 20, 30.
  • the air that has flowed through the compartments 10, 20, 30, is returned to the fan 40 through the actual Nutzinhalts Quarry the device. In this way, a Nutzinhaltshus by specially provided air ducts for returning already heated air avoided. Rather, according to the embodiment, the air return of all temperature zones or compartments takes place together in Nutzinhalts Surrey.
  • the cooling device comprises an evaporator and a fan and serves to independently control or regulate the temperatures in the individual compartments.
  • the compartments 10, 20, 30 are each operated at a specific setpoint temperature or in a setpoint temperature range, wherein the setpoint values or the setpoint ranges may differ from one another.
  • the control of the louvers 14, 24, 34 via a corresponding control member, which in turn is in communication with a control / control unit, not shown. This receives actual temperatures from the temperature sensors 12, 22, 32.
  • an opening corridor and a closing value are defined.
  • the opening corridor should allow the highest possible share of the parallel operation of the individual compartments and thus an energy-saving mode of operation.
  • the temperature differences that is to say the differences from the actual temperature value to the closing value of the compartments 10, 20, 30, whose closure element 14, 24, 34 is opened, are compared with one another.
  • the compartment with the lowest temperature difference of actual temperature value and closing value is determined and its closure element is closed. If, for example, the difference between the actual temperature value and the closing value in the compartment 30 is lower than in the compartments 10 and 20, the closure element 34 is closed. The closure element remains closed until the temperature difference of this compartment is equal to or greater than the temperature difference of the compartment with the next higher temperature difference.
  • the closure element 34 of the compartment becomes 30 reopened.
  • the evaporator 60 is deactivated by switching off the compressor or interconnecting any solenoid valve and the speed of the fan 40 is set to a lower value. If louvers 14, 24, 34 are closed, they will be opened provided that they have reached their closing value in the phase in which not all compartments have yet reached their final value, d. H. were at least partially opened in the cooling phase.
  • the ventilator 40 is completely switched off.
  • the flaps 14, 24, 34 are closed as soon as the corresponding temperature sensor 12, 22, 32 reports a temperature which corresponds to the setpoint temperature of the respective compartment and optionally a surcharge of, for example, 3K.
  • the evaporator remains deactivated until the evaporator sensor 62 has reached the switch-on value and / or an air sensor has reached an upper corridor value.
  • the adjustment of the individual temperature zones influences the opening and closing values of the air flaps assigned to the other temperature zones or compartments by means of parallel and steepness-defined correction factors.
  • the opening and closing values or the opening corridor and the closing value of the upper compartment 10 are corrected in the "warm” direction, to compensate for the increased cooling by the return air flow from the lower compartment 20.
  • the setpoint setting of a compartment is changed in the "warm” direction.
EP09001031.5A 2008-01-30 2009-01-26 Verfahren zum Betreiben eines Kühl- und/oder Gefriergerätes sowie nach einem solchen Verfahren betriebenes Kühl- und/ oder Gefriergerät Expired - Fee Related EP2085723B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008006760 2008-01-30
DE102008016926A DE102008016926A1 (de) 2008-01-30 2008-04-02 Verfahren zum Betreiben eines Kühl- und/oder Gefriergerätes sowie nach einem solchen Verfahren betriebenes Kühl- und/oder Gefriergerät

Publications (3)

Publication Number Publication Date
EP2085723A2 EP2085723A2 (de) 2009-08-05
EP2085723A3 EP2085723A3 (de) 2014-12-03
EP2085723B1 true EP2085723B1 (de) 2017-07-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001031.5A Expired - Fee Related EP2085723B1 (de) 2008-01-30 2009-01-26 Verfahren zum Betreiben eines Kühl- und/oder Gefriergerätes sowie nach einem solchen Verfahren betriebenes Kühl- und/ oder Gefriergerät

Country Status (6)

Country Link
US (1) US8117853B2 (ko)
EP (1) EP2085723B1 (ko)
JP (1) JP2009186174A (ko)
KR (1) KR101750555B1 (ko)
DE (1) DE102008016926A1 (ko)
ES (1) ES2643964T3 (ko)

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CN103868320B (zh) * 2013-09-27 2016-03-16 海信（山东）冰箱有限公司 一种冰箱的保护压缩机的控制方法
ITTO20131095A1 (it) * 2013-12-31 2015-07-01 Indesit Co Spa Metodo e dispositivo di controllo di una fase di surgelamento in un apparecchio frigorifero del tipo combinato mono regolazione, e relativo apparecchio frigorifero
ITTO20131094A1 (it) * 2013-12-31 2015-07-01 Indesit Co Spa Metodo e dispositivo di controllo di una fase di surgelamento in un apparecchio frigorifero del tipo combinato mono regolazione, e relativo apparecchio frigorifero
ITTO20131093A1 (it) * 2013-12-31 2015-07-01 Indesit Co Spa Metodo e dispositivo di controllo di una fase di surgelamento in un apparecchio frigorifero del tipo combinato mono regolazione, e relativo apparecchio frigorifero
DE102014000653A1 (de) * 2014-01-17 2015-07-23 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
CN105222463A (zh) * 2015-10-26 2016-01-06 海信（山东）冰箱有限公司 一种多系统风冷冰箱
CH709751B1 (de) * 2015-11-09 2019-06-28 V Zug Ag Kühlgerät mit einem Nutzraum mit mehreren Temperaturzonen.
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WO2019142311A1 (ja) * 2018-01-19 2019-07-25 三菱電機株式会社 冷蔵庫、冷蔵庫制御方法およびプログラム
WO2019169459A1 (en) 2018-03-09 2019-09-12 Electrolux Do Brasil S.A. Adaptive defrost activation method
CH715229A1 (de) 2018-08-02 2020-02-14 V Zug Ag Kühlgerät mit mehreren Temperaturzonen.
KR20200087048A (ko) * 2019-01-10 2020-07-20 엘지전자 주식회사 냉장고
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CN111536749B (zh) * 2020-04-24 2022-02-18 海信（山东）冰箱有限公司 一种冰箱及其控制方法

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Also Published As

Publication number Publication date
EP2085723A3 (de) 2014-12-03
KR20090083880A (ko) 2009-08-04
US20090188262A1 (en) 2009-07-30
ES2643964T3 (es) 2017-11-27
DE102008016926A1 (de) 2009-08-06
EP2085723A2 (de) 2009-08-05
JP2009186174A (ja) 2009-08-20
KR101750555B1 (ko) 2017-07-04
US8117853B2 (en) 2012-02-21

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