JP3976735B2 - 冷凍設備内の非測定物理量の評価方法 - Google Patents
冷凍設備内の非測定物理量の評価方法 Download PDFInfo
- Publication number
- JP3976735B2 JP3976735B2 JP2003586545A JP2003586545A JP3976735B2 JP 3976735 B2 JP3976735 B2 JP 3976735B2 JP 2003586545 A JP2003586545 A JP 2003586545A JP 2003586545 A JP2003586545 A JP 2003586545A JP 3976735 B2 JP3976735 B2 JP 3976735B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat exchanger
- air
- defect
- value
- 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
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/13—Mass flow of refrigerants
- F25B2700/135—Mass flow of refrigerants through the evaporator
- F25B2700/1352—Mass flow of refrigerants through the evaporator at the inlet
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/195—Pressures of the condenser
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/197—Pressures of 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21172—Temperatures of an evaporator of the fluid cooled by the evaporator at the inlet
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/04—Calculation of parameters
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)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
a)欠陥指標が第1の時点で1つの基準値に設定されるステップと、
b)予め決められた早期の時点の欠陥指標と、少なくとも1つの信号依存性の量を考慮して物理量に対する評価値から演繹された第1の量とから合計が形成されるステップと、
c)欠陥指標は、前記合計が基準値よりも大きい場合に合計の値に、かつ前記合計が基準値よりも小さいかまたは等しい場合に基準値に設定されるステップと、によって形成されることによって解決される。
hAir=1.006・t+x(2501+1.8・t),[h]=kJ/kg (5)
式中、tは空気の温度である。つまりTEva,inは蒸発器の前であり、TEva,outは蒸発器の後である。「x」は空気の湿度比と呼ばれる。空気の湿度比は次式によって計算できる:
pW=pW,Sat・RH (7)
Claims (9)
- 予め決められた時点でセンサによって測定される少なくとも1つの信号によって表される物理量から演繹できる冷凍設備内の非測定物理量を評価するための欠陥指標が所定の値に到ったときアラームを発生するシステムであって、
前記欠陥指標が、
a)第1の時点で1つの基準値に設定されるステップと、
b)予め決められた早期の時点の欠陥指標と、「前記冷凍設備が欠陥なしの運転条件で運転された場合での現在時点における理想的な非測定物理量」と「現在時点の前記少なくとも1つの信号によって表される物理量」との差である残余に基づき算定される「現在時点の欠陥指標」との合計を計算するステップと、
c)前記合計が前記基準値よりも大きい場合には前記欠陥指標を前記合計の値に、前記合計が前記基準値よりも小さいかまたは等しい場合に前記欠陥指標を前記基準値に設定するステップと
によって決定されることを特徴とする方法。 - 前記基準値が零であることを特徴とする請求項1記載の方法。
- 前記少なくとも1つの信号によって表される物理量が前記冷凍設備の熱交換器内の冷媒の物理量であることを特徴とする請求項1または2に記載の方法。
- 前記熱交換器内の冷媒の物理量が、該冷媒の前記熱交換器内での熱移動量であることを特徴とする請求項3記載の方法。
- 前記h Ref,in が、それぞれセンサによって測定される前記膨張弁入口での冷媒の温度と圧力から決定されることを特徴とする請求項5記載の方法。
- 前記h Ref,out が、それぞれセンサによって測定される前記熱交換器出口での冷媒の温度と圧力から決定されることを特徴とする請求項5記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10217974A DE10217974B4 (de) | 2002-04-22 | 2002-04-22 | Verfahren zum Auswerten einer nicht gemessenen Betriebsgröße in einer Kälteanlage |
PCT/DK2003/000252 WO2003089855A1 (de) | 2002-04-22 | 2003-04-12 | Verfahren zum auswerten einer nicht gemessenen betriebsgrösse in einer kälteanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005527769A JP2005527769A (ja) | 2005-09-15 |
JP3976735B2 true JP3976735B2 (ja) | 2007-09-19 |
Family
ID=29224661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003586545A Expired - Fee Related JP3976735B2 (ja) | 2002-04-22 | 2003-04-12 | 冷凍設備内の非測定物理量の評価方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7650758B2 (ja) |
EP (1) | EP1497598B1 (ja) |
JP (1) | JP3976735B2 (ja) |
AT (1) | ATE343109T1 (ja) |
AU (1) | AU2003226944A1 (ja) |
DE (1) | DE10217974B4 (ja) |
DK (1) | DK1497598T3 (ja) |
WO (1) | WO2003089855A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10217975B4 (de) * | 2002-04-22 | 2004-08-19 | Danfoss A/S | Verfahren zum Entdecken von Änderungen in einem ersten Medienstrom eines Wärme- oder Kältetransportmediums in einer Kälteanlage |
JP4009288B2 (ja) * | 2002-07-08 | 2007-11-14 | ダンフォス アクチーセルスカブ | フラッシュガスを検出するための方法と装置 |
WO2004036170A1 (en) * | 2002-10-15 | 2004-04-29 | Danfoss A/S | A method and a device for detecting an abnormality of a heat exchanger, and the use of such a device |
EP1831627B1 (en) * | 2004-12-16 | 2016-12-07 | Danfoss A/S | A method for controlling temperature in a refrigeration system |
US8239168B2 (en) * | 2009-06-18 | 2012-08-07 | Johnson Controls Technology Company | Systems and methods for fault detection of air handling units |
JP5058324B2 (ja) * | 2010-10-14 | 2012-10-24 | 三菱電機株式会社 | 冷凍サイクル装置 |
SE538676C2 (en) * | 2014-05-29 | 2016-10-18 | Picadeli Ab | A refrigerated food bar arrangement and a cooling system for cooling of a food bar |
WO2020223512A1 (en) * | 2019-04-30 | 2020-11-05 | Pfizer Inc. | Real-time tracking and management of standard workflows |
Family Cites Families (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2295992A (en) | 1941-01-09 | 1942-09-15 | Chrysler Corp | Flash gas control for refrigerating systems |
US3171462A (en) | 1962-10-10 | 1965-03-02 | Jr Thodore J Reinhart | Toroidal pneumatic tire |
US3707851A (en) | 1970-10-28 | 1973-01-02 | Mach Ice Co | Refrigeration system efficiency monitor |
US3918300A (en) | 1974-01-03 | 1975-11-11 | Aaron Weisstuch | Heat transfer measuring device |
DE2451361A1 (de) | 1974-10-29 | 1976-05-06 | Jakob | Verfahren zum regeln einer kompressorkuehlanlage |
US4136528A (en) | 1977-01-13 | 1979-01-30 | Mcquay-Perfex Inc. | Refrigeration system subcooling control |
US4193781A (en) | 1978-04-28 | 1980-03-18 | Mcquay-Perfex Inc. | Head pressure control for heat reclaim refrigeration systems |
CA1146650A (en) * | 1979-10-01 | 1983-05-17 | Lee E. Sumner, Jr. | Microcomputer based fault detection and indicator control system |
JPS5919273B2 (ja) | 1979-12-05 | 1984-05-04 | 株式会社日立製作所 | 復水器性能監視方法 |
SE8006391L (sv) | 1980-09-12 | 1982-03-13 | Jacob Weitman | Sett att reglera en vermevexlare |
US4325223A (en) * | 1981-03-16 | 1982-04-20 | Cantley Robert J | Energy management system for refrigeration systems |
JPS591970A (ja) | 1982-06-25 | 1984-01-07 | 株式会社日立製作所 | 冷媒流量制御装置 |
US4510576A (en) | 1982-07-26 | 1985-04-09 | Honeywell Inc. | Specific coefficient of performance measuring device |
US4479727A (en) | 1982-09-01 | 1984-10-30 | Carrier Corporation | Apparatus and method for evaluating the performance of a heat exchanger |
SE439063B (sv) * | 1983-06-02 | 1985-05-28 | Henrik Sven Enstrom | Forfarande och anordning for provning och prestandaovervakning vid vermepumpar och kylanleggningar |
US4614087A (en) | 1983-08-09 | 1986-09-30 | Nihon Radiator Co., Ltd. | Apparatus for alarming abnormal coolant in space cooling cycle |
US4766553A (en) | 1984-03-23 | 1988-08-23 | Azmi Kaya | Heat exchanger performance monitor |
KR890001890B1 (ko) | 1984-03-23 | 1989-05-30 | 더 뱁콕 앤드 윌콕스 컴퍼니 | 열교환기 성능 감지기 |
US4621502A (en) * | 1985-01-11 | 1986-11-11 | Tyler Refrigeration Corporation | Electronic temperature control for refrigeration system |
CH670311A5 (ja) | 1985-06-17 | 1989-05-31 | Bbc Brown Boveri & Cie | |
SE454020B (sv) * | 1986-02-21 | 1988-03-21 | Etm Metteknik Ab | Sett for bestemning av en kylprocess genom antagande om vissa parametrar, framfor allt kompressorverkningsgraden |
JPS6371625A (ja) | 1986-09-16 | 1988-04-01 | Mitsubishi Heavy Ind Ltd | 伝熱管の熱吸収量計測装置 |
US4768346A (en) * | 1987-08-26 | 1988-09-06 | Honeywell Inc. | Determining the coefficient of performance of a refrigeration system |
US4885914A (en) | 1987-10-05 | 1989-12-12 | Honeywell Inc. | Coefficient of performance deviation meter for vapor compression type refrigeration systems |
JPH01174870A (ja) | 1987-12-28 | 1989-07-11 | Toshiba Corp | 冷凍機診断装置 |
GB9008788D0 (en) * | 1990-04-19 | 1990-06-13 | Whitbread & Co Plc | Diagnostic equipment |
EP0470676A3 (en) | 1990-08-09 | 1992-09-16 | Riccius + Stroschen Gmbh | Procedure to determine the state of clogging of heat conducting tubes |
US5079930A (en) | 1990-12-03 | 1992-01-14 | Atron, Inc. | Apparatus and method for monitoring refrigeration system |
DE4119020A1 (de) | 1991-06-09 | 1992-12-10 | Braun Ag | Haartrockner |
DE4207144A1 (de) | 1992-03-06 | 1993-09-09 | Bayer Ag | Verfahren zur regelung von waermeuebertragern |
JPH05264136A (ja) | 1992-03-24 | 1993-10-12 | Mitsubishi Electric Corp | 空気調和機の熱交換器汚れ検出装置 |
US5289692A (en) | 1993-01-19 | 1994-03-01 | Parker-Hannifin Corporation | Apparatus and method for mass flow control of a working fluid |
US5341649A (en) | 1993-03-05 | 1994-08-30 | Future Controls, Inc. | Heat transfer system method and apparatus |
JPH07234043A (ja) * | 1994-02-22 | 1995-09-05 | Hitachi Building Syst Eng & Service Co Ltd | 空調設備における室内側熱交換器の能力把握方法 |
US5623426A (en) | 1994-02-23 | 1997-04-22 | Sanyo Electric Co., Ltd. | Failure diagnosing system for absorption chillers |
US5457965A (en) | 1994-04-11 | 1995-10-17 | Ford Motor Company | Low refrigerant charge detection system |
US5596507A (en) | 1994-08-15 | 1997-01-21 | Jones; Jeffrey K. | Method and apparatus for predictive maintenance of HVACR systems |
US5623834A (en) | 1995-05-03 | 1997-04-29 | Copeland Corporation | Diagnostics for a heating and cooling system |
US5615733A (en) | 1996-05-01 | 1997-04-01 | Helio-Compatic Corporation | On-line monitoring system of a simulated heat-exchanger |
US6128910A (en) * | 1997-02-06 | 2000-10-10 | Federal Air Conditioning Technologies, Inc. | Diagnostic unit for an air conditioning system |
US6355761B1 (en) * | 1999-05-12 | 2002-03-12 | Basf Coatings Ag | Coating composition |
US6089033A (en) | 1999-02-26 | 2000-07-18 | Dube; Serge | High-speed evaporator defrost system |
US6321564B1 (en) | 1999-03-15 | 2001-11-27 | Denso Corporation | Refrigerant cycle system with expansion energy recovery |
US6225907B1 (en) | 1999-05-14 | 2001-05-01 | International Comfort Products Corporation (Usa) | Environmental control system incipient failure indicator apparatus |
US6223544B1 (en) * | 1999-08-05 | 2001-05-01 | Johnson Controls Technology Co. | Integrated control and fault detection of HVAC equipment |
US6330802B1 (en) | 2000-02-22 | 2001-12-18 | Behr Climate Systems, Inc. | Refrigerant loss detection |
JP2001255046A (ja) | 2000-03-13 | 2001-09-21 | Sanyo Electric Co Ltd | 冷凍装置 |
US6272868B1 (en) | 2000-03-15 | 2001-08-14 | Carrier Corporation | Method and apparatus for indicating condenser coil performance on air-cooled chillers |
GB0014972D0 (en) | 2000-06-19 | 2000-08-09 | Borealis Tech Oy | Degassing apparatus |
CA2344908C (en) | 2000-07-20 | 2010-06-15 | Siemens Building Technologies, Inc. | Model based fault detection and diagnosis methodology for hvac subsystems |
US7139564B2 (en) | 2000-08-08 | 2006-11-21 | Hebert Thomas H | Wireless communication device for field personnel |
US6460358B1 (en) | 2000-11-13 | 2002-10-08 | Thomas H. Hebert | Flash gas and superheat eliminator for evaporators and method therefor |
JP3951711B2 (ja) | 2001-04-03 | 2007-08-01 | 株式会社デンソー | 蒸気圧縮式冷凍サイクル |
CN1265137C (zh) | 2001-05-03 | 2006-07-19 | 马特斯·林德格伦 | 用于控制从热交换器流出的输出流的温度并测量所产生的热量的方法和装置 |
US6658373B2 (en) | 2001-05-11 | 2003-12-02 | Field Diagnostic Services, Inc. | Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment |
US6701725B2 (en) | 2001-05-11 | 2004-03-09 | Field Diagnostic Services, Inc. | Estimating operating parameters of vapor compression cycle equipment |
US6590362B2 (en) * | 2001-07-27 | 2003-07-08 | Texas A&M University System | Method and system for early detection of incipient faults in electric motors |
DE10217975B4 (de) | 2002-04-22 | 2004-08-19 | Danfoss A/S | Verfahren zum Entdecken von Änderungen in einem ersten Medienstrom eines Wärme- oder Kältetransportmediums in einer Kälteanlage |
US6973793B2 (en) | 2002-07-08 | 2005-12-13 | Field Diagnostic Services, Inc. | Estimating evaporator airflow in vapor compression cycle cooling equipment |
JP4009288B2 (ja) * | 2002-07-08 | 2007-11-14 | ダンフォス アクチーセルスカブ | フラッシュガスを検出するための方法と装置 |
WO2004036170A1 (en) | 2002-10-15 | 2004-04-29 | Danfoss A/S | A method and a device for detecting an abnormality of a heat exchanger, and the use of such a device |
-
2002
- 2002-04-22 DE DE10217974A patent/DE10217974B4/de not_active Expired - Lifetime
-
2003
- 2003-04-12 AU AU2003226944A patent/AU2003226944A1/en not_active Abandoned
- 2003-04-12 US US10/512,207 patent/US7650758B2/en active Active
- 2003-04-12 WO PCT/DK2003/000252 patent/WO2003089855A1/de active IP Right Grant
- 2003-04-12 DK DK03746813T patent/DK1497598T3/da active
- 2003-04-12 EP EP03746813A patent/EP1497598B1/de not_active Expired - Lifetime
- 2003-04-12 AT AT03746813T patent/ATE343109T1/de not_active IP Right Cessation
- 2003-04-12 JP JP2003586545A patent/JP3976735B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU2003226944A1 (en) | 2003-11-03 |
JP2005527769A (ja) | 2005-09-15 |
US20050166608A1 (en) | 2005-08-04 |
DE10217974B4 (de) | 2004-09-16 |
DK1497598T3 (da) | 2007-02-26 |
EP1497598A1 (de) | 2005-01-19 |
EP1497598B1 (de) | 2006-10-18 |
ATE343109T1 (de) | 2006-11-15 |
US7650758B2 (en) | 2010-01-26 |
DE10217974A1 (de) | 2003-11-13 |
WO2003089855A1 (de) | 2003-10-30 |
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