EP1508007B1 - Gefriergerät mit abtaufunktion und betriebsverfahren dafür - Google Patents
Gefriergerät mit abtaufunktion und betriebsverfahren dafür Download PDFInfo
- Publication number
- EP1508007B1 EP1508007B1 EP03752736A EP03752736A EP1508007B1 EP 1508007 B1 EP1508007 B1 EP 1508007B1 EP 03752736 A EP03752736 A EP 03752736A EP 03752736 A EP03752736 A EP 03752736A EP 1508007 B1 EP1508007 B1 EP 1508007B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- freezing appliance
- time
- time period
- heating device
- appliance according
- 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 - Lifetime
Links
- 238000011017 operating method Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000010257 thawing Methods 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 26
- 238000007710 freezing Methods 0.000 claims description 23
- 230000008014 freezing Effects 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010000117 Abnormal behaviour Diseases 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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
- 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
- F25D21/008—Defroster control by timer
-
- 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
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
-
- 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 a freezer having a cooling surface on which an ice sheet can be formed in the course of operation of the freezer, and a heater for heating the cooling surface and thereby defrosting such an ice sheet.
- frost-free devices Conventional freezers of this type, also referred to as frost-free devices, have a control device for controlling the operation of the heater, which automatically puts the heater into operation when detected by means of a timer runtime of the device or a compressor of the device a predetermined limit exceeds. In this way it is ensured that the cooling surface is defrosted from time to time even without the active intervention of a user, so that it can not form a layer of ice on it in a thickness that significantly affects the energy efficiency of the device.
- a problem with this technique is that it is unable to take into account whether refrigerated goods may have been freshly stored in the freezer shortly before initiating a defrosting process. If this is the case, such refrigerated goods should be frozen as quickly as possible, for which a high cooling capacity is required. However, automatic defrosting of the cooling surface at such a time causes freezing to take a long time, and in unfavorable circumstances could even cause the refrigerated goods already stored in the freezer to become so hot from the newly stored one, that this stored goods antaut.
- Another disadvantage of this technique is that it is associated with relatively high energy costs because the increased power requirements of the freezer associated with defrosting can occur at any time of the day.
- the object of the present invention is to provide a freezer and a method of operation for ensuring at any time a quick freezing newly stored refrigerated goods and also make it possible to minimize the energy costs associated with the operation of such a device.
- This freezer need not necessarily be an automatic defrosting freezer; the timer according to the invention does not necessarily serve as in the conventional frost-free devices to trigger a defrosting after a certain time, but, on the contrary, to prevent this at certain, unfavorable times.
- the times when defrosting is considered necessary can be determined both automatically and by a user according to the present invention, as will be explained in more detail below.
- the time interval defined by the timer is a time interval, preferably one that lasts from 9:00 to 22:00, preferably at least from 1:00 to 5:00.
- This time interval setting is based on the assumption that at night, especially between 10:00 pm and 9:00 am, the likelihood of refrigerated goods being reloaded into the freezer is low because most users are shopping at an earlier time of day.
- the extension of the time interval in which the operation of the heater is locked at 5:00 clock the one day to 1:00 clock the next day, also has the advantage that in the then still available for defrosting period inexpensive night stream can be used for the defrosting process.
- the freezer according to the invention also uses low-cost night-time electricity in that - provided no defrosting takes place - the cooling surface operates at a higher cooling capacity in the defrosting period than during the blocked time interval.
- energy demand is also shifted from the blocked time interval to the period in which defrosting is permitted and in which the cost of electrical energy is less than in the locked time interval.
- the timer is coupled to a sensor for detecting the opening of a door of the freezer, and the time interval set by the timer is a time interval from when the door is open.
- the effect of this embodiment is comparable to that described above.
- the timer for the control circuit can be constructed differently. First, it may be an autonomous timer that receives no external control signals.
- a timer may include an oscillator for high accuracy accuracy at low cost, especially a quartz oscillator.
- the interface to such a network can also be used to receive a time signal which is transmitted or interrogated on the network and to make it available to the control circuit.
- a preferred application of the invention are devices such as the already mentioned frost-free devices, in which the control circuit is designed to detect at least one operating parameter of the freezer correlated with the degree of icing of the cooling surface and to put the heating device into operation outside the specified time interval if the at least one monitored operating parameter has exceeded a limit value.
- Preferred examples of such operating parameters are the total time elapsed since the last operating phase of the heating device or the operating time of a compressor of the freezer which has since passed.
- One parameter that does not require cumulative detection in contrast to the above two is the ratio of operating time to service life of a compressor of the freezer.
- Another suitable parameter is the number of door openings counted since the last operating phase of the heater.
- control circuit is assigned an operating element for inputting a command for starting up the heating device.
- This control allows the user to enter a command to start up the heater at any time, if he determines that defrosting makes sense, especially if he has opened the door and thus recognized the need for defrosting.
- the blocking according to the invention prevents the defrosting process from being carried out at an unfavorable time.
- such an operating element can also be provided in addition to a freezer with automatic defrosting.
- a heat-insulating housing 1 and a similar door 2 define a freezer compartment 3 inside the housing 1.
- a wall 4 separates from the freezer compartment 3 from a chamber 5, at the rear wall serving as a cooling surface evaporator 6 is arranged.
- the evaporator 6 is part of a refrigerant circuit, together with a compressor 7 and a condenser 8.
- a fan 9 is arranged in a passage opening of the partition 4, to effect an air circulation between the freezer compartment 3 and the chamber 5.
- the evaporator 6 Under normal operating conditions, the evaporator 6 is at temperatures below zero degrees Celsius. Moisture from the freezer compartment 3 in the chamber 5 circulated air condenses on the surface of the evaporator 6 and forms on this after prolonged use of an ice layer. In order to defrost this ice layer, a heater 10 is disposed in the chamber 5.
- the invention is also applicable to freezers in which the evaporator 6 is not housed in a separate chamber, but is in direct thermal contact with the freezer compartment 3.
- Fig. 2 shows a first embodiment of a control arrangement for the refrigeration device Fig. 1 ,
- the control arrangement comprises a control circuit 11, for example a microprocessor or microcontroller, which is connected to an operating element 12, for example an electrical button attached to the housing 1, a temperature sensor 13 arranged on the evaporator 6 and a timer 14.
- the timer 14 is preferably implemented in the form of a quartz watch or a radio-controlled clock and periodically provides a quantitative, representative of the time signal.
- the timer 14 may also be the interface to such a network because in such networks time signals may be periodically transmitted or requested by the interface 14 from another terminal.
- Fig. 3 shows a first example of a working method that can be processed by the control circuit 11 to defrost the evaporator 6 if necessary.
- a defrosting operation is not initiated automatically by the control circuit 11, but upon command of a user by pressing the key 12.
- the control circuit 11 determines in step S1 that the key 12 has been pressed, it checks in the next step S2 the time supplied by the timer 14. If it is between 5:00 am and 1:00 am, the control circuit 11 first ignores the user's command and waits until 1:00 am in step S3. The time interval from 5:00 in the morning until 1:00 at night is therefore a blocking time interval in which no defrosting is performed.
- the control circuit 11 turns on the power of the heater 10 and simultaneously turns off the compressor 7 and the fan 9, if they were turned on.
- the control circuit 11 waits to initiate the defrosting process until the operation phase is completed normally.
- step S6 When the heater 10 has run so long that the sensor 13 detects a target temperature above zero degrees Celsius, which surely indicates that the evaporator 6 is completely defrosted, the power of the heater 10 is turned off and the normal cooling operation is restored in step S6 added.
- the user can thus enter a defrost command via the key 12 at any convenient time, e.g. when it detects when defrosting or unloading refrigerated goods that defrosting is required.
- a defrost command via the key 12 at any convenient time, e.g. when it detects when defrosting or unloading refrigerated goods that defrosting is required.
- Fig. 4 shows an example of a control arrangement that allows a fully automatic defrosting operation. Components of this arrangement, already with reference to Fig. 2 have been described, bear the same reference numerals and will not be described separately.
- the control circuit 11 of Fig. 4 In addition, it has a signal input 15 to which a control signal generated by a thermostat control circuit 16 for switching on and off the compressor 7 is applied.
- FIG Fig. 5 A first example of a working method that can be carried out with this embodiment of the control arrangement is shown in FIG Fig. 5 shown.
- the method begins with an operating time counter t being set to zero after the freezer is switched on in step S11.
- the control circuit 11 recognizes that the compressor 7 is turned on (S12), it stores the current time t akt in a buffer b (S13).
- the value in the buffer b is subtracted from the now current time clock and stored again in the buffer b (S15).
- step S16 If the result is less than zero in step S16, the start and end of the compressor operation phase are different days, and 24 hours must be added to the value in buffer b (S17) to obtain the correct duration of the operation phase of the suspected , The duration thus obtained is added to t (S18), and it is checked (S19) whether the result is over a permissible total operating time t lim of the compressor between two defrosting operations. If so, then defrosting is necessary and the process goes to step S21; if not, it is checked in step S 20 whether the user has pressed the key 12 and therefore a defrosting operation is necessary. If so, the method also proceeds to step S21, if not, a new operating phase of the compressor is awaited in step S12.
- the total operating time of the freezer since the last defrosting operation could be summarily measured and branched to step S21 as soon as the total operating time has exceeded a predetermined limit value.
- FIG. 6 A further embodiment of an operating method for the control arrangement Fig. 4 is determined by Fig. 6 treated.
- the ratio between compressor running time and freezer running time is used as a criterion for the need for defrosting.
- This modification has the advantage that it does not work with parameters accumulated over the entire operating time of the last defrosting operation, so that the defrosting process can be triggered correctly even if parameter values stored as a result of a power failure or another fault have been lost.
- step S31 begins in step S31 with the initialization of a parameter a representative of the ratio between the compressor running time and the device running time to a value a, which in principle can arbitrarily be selected below a predetermined limit value A.
- step S32 is checked whether the compressor 7 is turned on or not. If not, the parameter a is multiplied by a "forgetting factor" 1- ⁇ in step S34; otherwise, it is previously incremented in step S33. By repeating these steps frequently, a converges to a value proportional to the desired ratio.
- step S 35 it is checked whether the limit A is exceeded. If not, the steps S32 to S34 are repeated, otherwise, it is determined that defrosting is required, and steps S21 to S26 are followed.
- Fig. 6 In the control arrangement of Fig. 6 is the signal input 15 of Fig. 4 replaced by a connection to a switch 17.
- This switch 17 is arranged in a conventional manner on the housing 1 to detect the opening and closing of the door 2 and, accordingly, the interior lighting of the freezer compartment 3 on and off.
- the control circuit 11 counts the number of times the door 2 has been opened since the last defrosting operation or, alternatively, the total time during which the door 2 has been open since the last defrosting operation and compares the result with a threshold value.
- This method is not illustrated by way of a flow chart, as its operation may be evident by generalizing the examples given above. As soon as the limit value is exceeded, steps S21 to S26 are also carried out in this method.
- step S 41 the value of any suitable parameter is detected, eg the number or duration of the door openings, compressor operating time, total operating time, ratio of compressor operating time to total operating time, etc. If it is determined in step S 42 that the door 2 has been opened, then the timer 14 is started (S43), which does not serve to provide a time in this embodiment, but to indicate the elapse of a predetermined period of, for example, three hours. These steps are cyclically repeated unless it is determined in step S44 that the monitored parameter has exceeded the threshold.
- any suitable parameter eg the number or duration of the door openings, compressor operating time, total operating time, ratio of compressor operating time to total operating time, etc.
- next (S45) it has to be checked whether the timer has expired, that is, whether the given time has elapsed since the last door open. If this is not the case, steps S41 to S44 are looped through until the timer has expired.
- the expiry of the timer indicates that a defrosting process may now be initiated because sufficient time has elapsed since the last door was opened to safely freeze any newly stored refrigerated goods.
- the subsequent steps are identical to the steps S4 to S7 Fig. 3 and therefore need not be explained again.
- a by-product of this control is that the timer will usually expire at night, so the likelihood that the door will remain closed so long that the timer can expire is greatest. Therefore, even with the method of Fig. 8 For the defrosting process mostly cheap night-time electricity can be used.
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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Meat, Egg Or Seafood Products (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221904 | 2002-05-16 | ||
DE10221904A DE10221904A1 (de) | 2002-05-16 | 2002-05-16 | Gefriergerät mit Abtaufunktion und Betriebsverfahren dafür |
PCT/EP2003/005004 WO2003098134A1 (de) | 2002-05-16 | 2003-05-13 | Gefriergerät mit abtaufunktion und betriebsverfahren dafür |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1508007A1 EP1508007A1 (de) | 2005-02-23 |
EP1508007B1 true EP1508007B1 (de) | 2010-10-27 |
Family
ID=29413900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03752736A Expired - Lifetime EP1508007B1 (de) | 2002-05-16 | 2003-05-13 | Gefriergerät mit abtaufunktion und betriebsverfahren dafür |
Country Status (10)
Country | Link |
---|---|
US (1) | US7320226B2 (pl) |
EP (1) | EP1508007B1 (pl) |
CN (1) | CN100374800C (pl) |
AT (1) | ATE486256T1 (pl) |
BR (1) | BR0309948A (pl) |
DE (2) | DE10221904A1 (pl) |
ES (1) | ES2353114T3 (pl) |
PL (1) | PL202376B1 (pl) |
RU (1) | RU2313742C2 (pl) |
WO (1) | WO2003098134A1 (pl) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20031395A1 (it) * | 2003-07-09 | 2005-01-10 | Whirlpool Co | Refrigeratore a sbrinamento automatico temporalmente indirizzato. |
DE102008054934A1 (de) | 2008-12-18 | 2010-07-01 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät sowie Verfahren zur Temperaturregelung in einem Kältegerät |
MX342129B (es) * | 2009-11-10 | 2016-09-14 | Unilever Nv | Superficies libres de escarcha y metodo para fabricarlas. |
DE102010007141A1 (de) * | 2010-02-05 | 2011-08-11 | Aht Cooling Systems Gmbh | Kühltruhe |
DE102012213644A1 (de) * | 2012-08-02 | 2014-02-20 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit automatischer Abtauung |
DE102012221296A1 (de) * | 2012-11-21 | 2014-05-22 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit einem Kühlfach |
US10808961B2 (en) | 2013-08-30 | 2020-10-20 | James Leych Lau | Energy saving controller |
US10047969B2 (en) * | 2013-08-30 | 2018-08-14 | James Leych Lau | Energy saving controller |
CN104880016B (zh) * | 2015-05-26 | 2018-02-02 | 青岛海尔股份有限公司 | 冷藏冷冻设备及其防凝露方法和防凝露系统 |
US11912104B2 (en) * | 2018-04-13 | 2024-02-27 | Carrier Corporation | Method of defrosting a refrigeration system |
KR20200062698A (ko) * | 2018-11-27 | 2020-06-04 | 엘지전자 주식회사 | 냉장고 및 그의 제어방법 |
US20200173719A1 (en) * | 2018-12-03 | 2020-06-04 | Mikko Lauri Antti Jaakkola | Method and system for cold storage health and content monitoring |
CN114812035B (zh) * | 2021-01-29 | 2024-03-15 | 青岛海尔电冰箱有限公司 | 冰箱及其控制方法 |
Family Cites Families (24)
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US1979103A (en) * | 1931-12-19 | 1934-10-30 | Edwin G Gaynor | Automatic control for refrigerators, etc. |
US2703481A (en) * | 1950-09-27 | 1955-03-08 | Cutler Hammer Inc | Circuit controlling device for refrigerating systems and the like |
GB770362A (en) * | 1955-02-15 | 1957-03-20 | Westinghouse Electric Int Co | Improvements in or relating to refrigerating apparatus |
US3164969A (en) * | 1963-08-26 | 1965-01-12 | Lexaire Corp | Heat pump defrost control |
CH626500B (de) * | 1980-01-10 | Suisse Horlogerie | Oszillator mit digitaler temperaturkompensation. | |
US4392357A (en) * | 1981-04-27 | 1983-07-12 | Emhart Industries, Inc. | Method and means controlling defrost cycles of a cooling unit |
US4581901A (en) * | 1983-01-21 | 1986-04-15 | Emhart Industries, Inc. | Control system for a heat pump system |
US4530218A (en) * | 1984-02-27 | 1985-07-23 | Whirlpool Corporation | Refrigeration apparatus defrost control |
US4787063A (en) * | 1984-10-19 | 1988-11-22 | Francis Muguet | Acquisition and transmission system for a recorder and a computer center |
JP2763568B2 (ja) * | 1989-03-06 | 1998-06-11 | 松下冷機株式会社 | ショーケースの制御装置 |
KR930013649A (ko) * | 1991-12-21 | 1993-07-22 | 이헌조 | 냉장고의 사용 패턴 학습에 의한 제상방법 |
US5379608A (en) * | 1992-03-24 | 1995-01-10 | Fuji Electric Co., Ltd. | Defrosting control unit for showcases |
US5363669A (en) * | 1992-11-18 | 1994-11-15 | Whirlpool Corporation | Defrost cycle controller |
JPH06249566A (ja) * | 1993-02-24 | 1994-09-06 | Sanyo Electric Co Ltd | 冷蔵庫の除霜制御装置 |
US5345775A (en) * | 1993-03-03 | 1994-09-13 | Ridenour Ralph Gaylord | Refrigeration system detection assembly |
US5415005A (en) * | 1993-12-09 | 1995-05-16 | Long Island Lighting Company | Defrost control device and method |
US5483804A (en) * | 1994-03-28 | 1996-01-16 | Sanyo Electric Co., Ltd. | Defrost control apparatus for refrigerator |
GB9407098D0 (en) * | 1994-04-09 | 1994-06-01 | Harrison Brothers Steeplejacks | Detection system and method of operating same |
DE4438917C2 (de) * | 1994-11-03 | 1998-01-29 | Danfoss As | Verfahren zum Abtauen eines Kältesystems und Steuergerät zur Durchführung dieses Verfahrens |
US5970726A (en) * | 1997-04-08 | 1999-10-26 | Heatcraft Inc. | Defrost control for space cooling system |
US6026651A (en) * | 1998-07-21 | 2000-02-22 | Heat Timer Corporation | Remote controlled defrost sequencer |
JP2001160176A (ja) * | 1999-12-03 | 2001-06-12 | Sanden Corp | 自動販売機 |
US6408634B1 (en) * | 2000-08-17 | 2002-06-25 | Jimex Corporation | Multi-chamber refrigeration system utilizing a single compressor and digital temperature controls |
DE60030971T2 (de) * | 2000-08-18 | 2007-06-14 | Ranco Inc. Of Delaware, Wilmington | Steuervorrichtung und Verfahren zum Steuern des Abtauvorgangs in einem Kühlschrank |
-
2002
- 2002-05-16 DE DE10221904A patent/DE10221904A1/de not_active Ceased
-
2003
- 2003-05-13 RU RU2004133383/11A patent/RU2313742C2/ru not_active IP Right Cessation
- 2003-05-13 CN CNB038111292A patent/CN100374800C/zh not_active Expired - Fee Related
- 2003-05-13 DE DE50313221T patent/DE50313221D1/de not_active Expired - Lifetime
- 2003-05-13 WO PCT/EP2003/005004 patent/WO2003098134A1/de active Application Filing
- 2003-05-13 BR BR0309948-2A patent/BR0309948A/pt not_active Application Discontinuation
- 2003-05-13 AT AT03752736T patent/ATE486256T1/de active
- 2003-05-13 ES ES03752736T patent/ES2353114T3/es not_active Expired - Lifetime
- 2003-05-13 PL PL371493A patent/PL202376B1/pl not_active IP Right Cessation
- 2003-05-13 EP EP03752736A patent/EP1508007B1/de not_active Expired - Lifetime
-
2004
- 2004-11-04 US US10/980,968 patent/US7320226B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7320226B2 (en) | 2008-01-22 |
ES2353114T3 (es) | 2011-02-25 |
CN1653307A (zh) | 2005-08-10 |
US20050066667A1 (en) | 2005-03-31 |
PL371493A1 (pl) | 2005-06-27 |
DE50313221D1 (de) | 2010-12-09 |
PL202376B1 (pl) | 2009-06-30 |
RU2004133383A (ru) | 2005-07-20 |
ATE486256T1 (de) | 2010-11-15 |
BR0309948A (pt) | 2005-03-01 |
WO2003098134A1 (de) | 2003-11-27 |
EP1508007A1 (de) | 2005-02-23 |
RU2313742C2 (ru) | 2007-12-27 |
CN100374800C (zh) | 2008-03-12 |
DE10221904A1 (de) | 2003-12-04 |
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