Compact microwave system for de-icing and for preventing icing of the outer surfaces of hollow or shell structures which are exposed to meterological influences
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05B-006/80
B64D-015/12
출원번호
US-0253766
(2002-09-24)
우선권정보
DE-0016261 (2000-04-03)
발명자
/ 주소
Feher, Lambert
출원인 / 주소
Forschungszentrum Karlsruhe GmbH
대리인 / 주소
Bach, Klaus J.
인용정보
피인용 횟수 :
5인용 특허 :
5
초록▼
In a microwave de-icing system for the front areas of exposed shell structures, at least one independently operable microwave generator is disposed in each shell structure closely adjacent the surfaces of the shell structure to be de-iced or kept free of ice and uncoupling means are flanged to the m
In a microwave de-icing system for the front areas of exposed shell structures, at least one independently operable microwave generator is disposed in each shell structure closely adjacent the surfaces of the shell structure to be de-iced or kept free of ice and uncoupling means are flanged to the microwave generators with uncoupling openings disposed along the area of the shell structure to be heated so as to provide a microwave wave front directed toward this area. The area subjected to the wave-front includes walls of a dielectric composite material with a metallic skin whereby the microwave front penetrates into the wall and is converted at least partially into heat within the wall of composite material thereby providing for rapid and effective heat supply to the wall areas of the shell structure to be kept free of ice.
대표청구항▼
In a microwave de-icing system for the front areas of exposed shell structures, at least one independently operable microwave generator is disposed in each shell structure closely adjacent the surfaces of the shell structure to be de-iced or kept free of ice and uncoupling means are flanged to the m
In a microwave de-icing system for the front areas of exposed shell structures, at least one independently operable microwave generator is disposed in each shell structure closely adjacent the surfaces of the shell structure to be de-iced or kept free of ice and uncoupling means are flanged to the microwave generators with uncoupling openings disposed along the area of the shell structure to be heated so as to provide a microwave wave front directed toward this area. The area subjected to the wave-front includes walls of a dielectric composite material with a metallic skin whereby the microwave front penetrates into the wall and is converted at least partially into heat within the wall of composite material thereby providing for rapid and effective heat supply to the wall areas of the shell structure to be kept free of ice. the output signal, and based on the workpiece emissivity and the output signal, determining the workpiece temperature. 15. The method of claim 1, further comprising the steps of providing a control facility for controlling movement of the workpiece within the thermal processing furnace in response to the measured workpiece temperature. 16. The method of claim 1, further comprising the steps of determining the difference between the measured temperature and an intended temperature from the temperature profile to form an error signal, and based on the error signal, moving the workpiece within the thermal processing furnace with an elevator subsystem. 17. The method of claim 16, further comprising the step of scaling the error signal by a pre-determined value. 18. The method of claim 17, further comprising the step of sampling the intended temperature profile at one or more points, and determining one or more boundary conditions of the elevator subsystem based on the sampled points. 19. The method of claim 18, further comprising the step of determining one or more boundary conditions of the elevator subsystem based on the boundary condition. 20. The method of claim 19, further comprising the step of moving the workpiece at a selected speed within the chamber and within the boundary condition. 21. The method of claim 17, further comprising the step of sampling the intended temperature profile at one or more different points. 22. A system for processing a workpiece, comprising a thermal processing furnace having a process chamber, a feedback subsystem coupled to the thermal processing furnace for detecting a parameter of the workpiece when disposed in the processing chamber, a control facility for generating a control signal to regulate a position and a speed of the workpiece based upon an intended temperature profile of the workpiece and the parameter of the workpiece, and an elevator subsystem in communication with the control facility for moving the workpiece through the process chamber in response to the control signal to heat process the workpiece generally according to the intended temperature profile. 23. The system of claim 22, wherein said control facility is adapted to control the elevator subsystem to move the workpiece along an intended path through the processing chamber as a function of the intended temperature profile. 24. The system of claim 22, further comprising means for acquiring one or more selected set points of the thermal processing furnace. 25. The system of claim 22, further comprising a user interface for providing a workpiece processing recipe, wherein said recipe includes at least one of a temperature ramp-up rate, a temperature ramp-down rate, and a soak temperature. 26. The system of claim 24, wherein said control facility generates the control signal to move the workpiece through the furnace based upon the furnace set points, the intended temperature profile, and the measured temperature of the workpiece. 27. The system of claim 25, further comprising a trajectory generator for generating the intended temperature profile in response to the recipe. 28. The system of claim 22, wherein the control facility is adapted to determine the temperature of the workpiece according to the following equation: 29. The system of claim 22, wherein said feedback subsystem comprises a pyrometer for measuring the temperature of the workpiece, an emissivity measurement stage for measuring the emissivity of the workpiece, and a filtering stage for filtering one if the measured temperature and emissivity, wherein said feedback subsystem generates a signal corresponding to the measured temperature of the workpiece. 30. The system of claim 22, further comprising a plurality of thermocouples for measuring the temperature of the furnace at one or more locations. 31. The system of claim 30, wherein said controller further comprises a furnace thermal properties stage for generating an output signa
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이 특허에 인용된 특허 (5)
Magenheim Bertram (Bethesda MD), Deicing apparatus and method.
Bouiller Philippe (Samoreau FRX) Corbin Claude G. (Voisenon FRX) Franchet Michel (Cesson FRX) Jourdain Gerard E. A. (Saintry Sur Seine FRX), Turbojet equipped with a deicing system on the intake case.
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