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    • 32. 发明授权
    • Differential pumping via core of annular supersonic jet
    • 通过环形超音速射流的芯的差分泵浦
    • US06396064B1
    • 2002-05-28
    • US09555099
    • 2000-05-24
    • Gerasimos Daniel Danilatos
    • Gerasimos Daniel Danilatos
    • H01J4924
    • H01J37/18F04F5/20F04F5/465H01J37/301H01J2237/188H01J2237/2605
    • An aperture (5) connects a first chamber (1) with a second chamber (2), and is surrounded by an annular nozzle (7) formed by inner and outer walls (6, 8), which connects the first chamber (1) with a third chamber (3). A supersonic annular gas jet (9) is ejected by the annular nozzle (7) into the first chamber (1), creating a Venturi pumping action at the core of the jet in the vicinity of the aperture (5). The second chamber (2) may thus be maintained at a substantially lower pressure than the first chamber (1). Inner wall (6) and outer wall (8) may be relatively movable for varying gas flow, and the first chamber (1) may include baffles or skimmers to modify gas flow, e.g., to create a high density molecular beam. An electron or ion beam (4) may be transferred from the second chamber (2) to the first chamber (1), e.g., as part of an environmental scanning electron microscope.
    • 孔(5)将第一室(1)与第二室(2)连接,并由内壁和外壁(6,8)形成的环形喷嘴(7)包围,所述环形喷嘴将第一室(1) 与第三室(3)。 超音速环形气体喷射(9)被环形喷嘴(7)喷射到第一腔室(1)中,在孔口(5)附近的射流核心产生文丘里泵送作用。 因此,第二室(2)可以保持在比第一室(1)基本上更低的压力。 内壁(6)和外壁(8)可以相对移动以改变气体流动,并且第一室(1)可以包括挡板或撇渣器以改变气流,例如产生高密度分子束。 电子或离子束(4)可以从第二室(2)转移到第一室(1),例如作为环境扫描电子显微镜的一部分。
    • 33. 发明授权
    • Apparatus and process for operating jet pump from which a driving medium
exits at supersonic speed
    • 用于操作喷射泵的装置和过程,驱动介质从该喷射泵以超音速离开
    • US5820353A
    • 1998-10-13
    • US765389
    • 1997-01-06
    • Alfred E. BeylichMartin Blanke
    • Alfred E. BeylichMartin Blanke
    • F04F5/46F04F5/44
    • F04F5/46F04F5/465
    • A process for operating a jet pump with a driving nozzle from which a driving medium, especially steam, exits at supersonic speed, this driving medium mixing with a gaseous load medium. According to the invention, downstream of the outlet of the nozzle in the mixing region the circumferential length is increased by a cross-sectional shape of the driving jet diverging from the circle in order to eliminate the azimuthal symmetry of the vortex structure of the driving medium, wherein the respective cross-sectional surface corresponding to the principle of continuity beginning in the jet direction with a circular cross section in the supersonic portion of the jet corresponds to the circular cross-section surface of the driving medium in conventional supersonic nozzles. The invention is further directed to a jet pump, especially a steam jet pump, with a jet nozzle which widens from the neck to its end and is enclosed by a coaxially arranged mixing chamber and, a conically tapering diffuser portion adjoining the latter. This jet pump is characterized in that the cross-sectional shape of the widening portion (13) of the jet nozzle (10) is so formed by a neck (12) of the transonic portion having a circular cross section (Ak) with corresponding circumferential length (Lk) downstream of the jet that the circumference has a greater length (Lx) compared with the circular shape in a given cross-sectional surface (A), and at least three carrugations or beads (18) extending in the jet direction are provided in the casing (19) of the jet nozzle.
    • PCT No.PCT / DE95 / 00923 Sec。 371日期1997年1月6日 102(e)日期1997年1月6日PCT 1995年7月5日PCT公布。 出版物WO96 / 01374 日期1996年1月18日一种用于操作具有驱动喷嘴的喷射泵的方法,驱动介质,特别是蒸汽,其以超声速度离开,该驱动介质与气体负载介质混合。 根据本发明,在混合区域中喷嘴出口的下游,圆周长度增加了驱动射流从圆形发散的横截面形状,以消除驱动介质的涡流结构的方位角对称性 其中对应于在喷射超声波部分中以喷射方向开始的具有圆形横截面的连续性原理的相应横截面表示对应于常规超音速喷嘴中的驱动介质的圆形横截面。 本发明还涉及一种喷射泵,特别是蒸汽喷射泵,喷射喷嘴从颈部扩展到其端部,并被同轴布置的混合室包围,并且与锥形扩散器部分相邻的锥形扩散部分。 该喷射泵的特征在于,喷嘴(10)的加宽部分(13)的横截面形状由具有圆形横截面(Ak)的跨音部分的颈部(12)形成,具有相应的圆周 长度(Lk),与给定横截面(A)中的圆形形状相比,圆周具有较大长度(Lx),并且在喷射方向上延伸的至少三个瓦楞纸或珠子(18)是 设置在喷嘴的壳体(19)中。
    • 36. 发明授权
    • Compressible fluid contact heat exchanger
    • 可压缩流体接触式热交换器
    • US3915222A
    • 1975-10-28
    • US11004671
    • 1971-01-27
    • HULL FRANCIS R
    • HULL FRANCIS R
    • F02C7/08F04F5/46F28C3/02
    • F04F5/461F02C7/08F04F5/465F28C3/02Y10S165/162
    • This invention is directed to the contact interchange of thermal and kinetic energy between adjacent compressible fluid streams across a virtual heat transfer surface at substantially different velocities in parallel flow. The invention may find especial application as a regenerative heat exchanger in gas turbine power plants, or as the low-velocity contact-type air pre-heater of a steam generator or furnace. Hot low-pressure exhaust fluids and cool compressed intake fluids enter the receiver-side section of an elongate heat exchanger. Intake-fluid stream pressure energy is converted to kinetic energy within nozzle passageways of the receiver-side section. The cold high-velocity intake-fluid stream is rapidly heated in the velocity-accelerated contact interchange process by the hot low-velocity exhaust-fluid stream within the mixing section. Following the contact interchange process, the intakefluid and exhaust-fluid streams are separated from each other by flow-dividing members and discharged from the separator-side section. Within the preheated intake-fluid stream, normal shock in supersonic flow across the inlet of the intake-fluid discharge passage is averted by the effects of variable control over characteristic length and exhaust-fluid outlet flow control.
    • 本发明涉及在相邻的可压缩流体流之间以平行流以基本上不同的速度穿过虚拟传热表面的热能和动能的接触交换。 本发明可以在燃气轮机发电厂或作为蒸汽发生器或炉的低速接触式空气预热器中发现作为再生式热交换器的特殊应用。