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    • 8. 发明授权
    • Apparatus for microwave heating test coupons
    • 微波加热试验仪器
    • US4999469A
    • 1991-03-12
    • US503025
    • 1990-04-02
    • Kenneth W. DudleyRichard H. EdgarE. Eugene Eves, II
    • Kenneth W. DudleyRichard H. EdgarE. Eugene Eves, II
    • H05B6/70H05B6/76H05B6/80
    • H05B6/76H05B6/707
    • A test bonding apparatus comprising a rectangular wave-guide having a first pair of spaced opposing side walls attached to an orthogonal pair of spaced opposing side walls which are relatively wider. The waveguide includes an input portion, an intermediate bonding chamber portion and a terminating end portion which disposed in communication with one another. Coupled to the input portion is a microwave source and a coolant source for propagating consistently through the bonding chamber portion microwave energy having a predominant frequency associated with a predetermined wavelength, and a flow of coolant fluid. The relatively wider side walls in the bonding chamber portion of the waveguide have disposed along their longitudinal centerlines respective aligned slots. Each of the slots has opposing longitudinal edges disposed adjacent open ends of respective quarter wavelength chokes which are supported externally of the waveguide. Thus, a high impedance is established at each of the slots for preventing leakage of microwave energy therefrom. Within the bonding chamber portion, an aligned pair of dielectric clamping plates are supported by respective dielectric grid-like structures which permit passage of microwave energy and coolant fluid longitudinally through the bonding chamber portion. The terminating end portion is provided with a matched load for dissipating microwave energy and with a screened output aperture for permitting egress of heat carrying coolant fluid.
    • 一种测试接合装置,包括矩形波导,其具有连接到相对较宽的正交对间隔开的相对侧壁的第一对间隔开的相对侧壁。 波导包括彼此连通的输入部分,中间粘合室部分和终止端部分。 耦合到输入部分的是微波源和冷却剂源,用于一致地传播通过粘合室部分具有与预定波长相关联的主要频率的微波能量和冷却剂流体流。 波导的接合室部分中相对较宽的侧壁沿着它们的纵向中心线设置各自对准的槽。 每个槽具有相对的纵向边缘,其相邻的四个波长扼流圈的开口端设置在波导外部。 因此,在每个槽处建立高阻抗以防止其中的微波能量的泄漏。 在接合室部分内,对准的一对电介质夹持板由相应的电介质格栅状结构支撑,允许微波能量和冷却剂流体纵向通过粘合室部分。 终端部分设置有用于消散微波能量的匹配负载,并具有用于允许承载冷却剂流体的屏蔽输出孔。
    • 10. 发明授权
    • Microwave browning means
    • 微波褐变意味着
    • US3934106A
    • 1976-01-20
    • US497445
    • 1974-08-14
    • George H. MacMasterKenneth W. Dudley
    • George H. MacMasterKenneth W. Dudley
    • H05B6/80H05B9/06
    • H05B6/725H05B6/6411H05B6/6482H05B6/6494
    • Apparatus is disclosed for heating with microwave energy utilizing nonresonant means for converting and transforming free space plane waves within the oven enclosure into fringing electric field patterns to brown or sear the load surfaces similar to broiling. One embodiment comprises parallel abutting plates with alternate plates of a high dielectric constant material to provide a predetermined phase lag and with the intervening low dielectric constant sections to provide alternating fringing electric fields, illustratively, in the pi or any other desired mode pattern. Alternate embodiments include microwave strip transmission lines comprising conductive strips separated by a dielectric substrate to couple and convert the free space waves into the desired heating mode pattern. A load supporting shelf within the microwave oven may be readily adapted to include the alternating dielectric materials to provide the desired fringing electric field patterns. Conveyor belts may also be adapted to incorporate browning surface means by strips of a high dielectric material on the belt material. Further embodiments include microwave oven enclosures radiated by horn means which may be cross-polarized, as well as, the combination of horn radiators coupled to microwave browning plates.
    • 公开了用微波能量加热的装置,其利用非谐振装置,用于将烤箱外壳内的自由空间平面波转换和转换为边缘电场图案,以褐色或与烧烤相似的负载表面。 一个实施例包括具有高介电常数材料的交替板的平行邻接板以提供预定的相位滞后并且与介于中间的低介电常数部分之间提供交替的边缘电场,示例性地以pi或任何其它期望的模式图案。 替代实施例包括微波带传输线,其包括由电介质基底分隔的导电条,以将自由空间波耦合并转换成期望的加热模式图案。 微波炉内的负载支撑架可以容易地适于包括交替电介质材料以提供期望的边缘电场图案。 输送带也可以适于在带材料上掺入高介电材料的条带的褐变表面装置。 另外的实施例包括由喇叭装置辐射的可能是交叉极化的微波炉外壳,以及耦合到微波褐化板的喇叭辐射器的组合。