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公开(公告)号:US5315193A
公开(公告)日:1994-05-24
申请号:US910305
申请日:1992-07-15
CPC分类号: B23D59/006 , B23Q11/0042 , B25F5/008 , H02K9/06 , Y02P70/171
摘要: A hand-guidable electric machine tool has a casing having an air guide duct, a tool part, a motor for driving the tool part, and a radial blower for cooling the motor, the radial blower having a fan wheel for forming a static pressure differential. The air guide duct has an inlet opening and an outlet opening and continuously widening in cross-section in a direction of the outlet opening. The cross-section measured in radial direction of the inlet opening of the air guide duct is smaller than the cross-section of the outlet opening.
摘要翻译: PCT No.PCT / DE90 / 00972 Sec。 371日期:1992年7月15日 102(e)日期1992年7月15日PCT 1990年12月19日PCT PCT。 公开号WO91 / 11297 日期:1991年8月8日。一种手动引导电动机具有具有导气管,工具部,用于驱动工具部的电动机和用于冷却电动机的径向鼓风机的壳体, 用于形成静压差的车轮。 导气管具有入口和出口,并且在出口开口方向上的横截面不断变宽。 在导气管的入口的径向测量的横截面小于出口的横截面。
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公开(公告)号:US5478206A
公开(公告)日:1995-12-26
申请号:US122431
申请日:1993-09-23
申请人: Eberhard Prahst
发明人: Eberhard Prahst
CPC分类号: F04D29/023 , F04D29/281 , F05D2230/53 , F05D2300/43
摘要: An impeller for a radial fan comprises a hub, a plurality of rotor blades each curved three-dimensionally at least within some areas, each of the rotor blades having a center part which extends substantially straight and radially from the hub, a curved primary part into which the center part merges tangentially and which extends in a radial direction around an axis extending substantially perpendicular to an impeller rotary axis, and a secondary part in which the center part merges tangentially in a radial direction and which is curved about an axis extending parallel to the impeller rotary axis and a guide ring located at an inflow region of the rotor blades. The impeller can have a frame, and an additional guide ring arranged at the axial distance from the guide ring and rigidly arranged with respect to the frame. The center part of the impeller can extend within a plane which is inclined at an angle to a radial line passing through the inner periphery of the center part.
摘要翻译: PCT No.PCT / DE92 / 00183 Sec。 371日期:1993年9月23日 102(e)日期1993年9月23日PCT提交1992年3月4日PCT公布。 WO92 / 16253 PCT出版物 1992年1月10日。用于径向风扇的叶轮包括毂,多个转子叶片,每个转子叶片至少在一些区域内三维地弯曲,每个转子叶片具有中心部分,其中心部分从 轮毂,弯曲的主要部分,其中心部分切向并入其中,并且沿径向方向围绕基本上垂直于叶轮旋转轴线延伸的轴线延伸;以及次级部件,其中中心部分在径向方向上相切地并入, 围绕平行于叶轮旋转轴线延伸的轴线弯曲,以及位于转子叶片的流入区域的导向环。 叶轮可以具有框架,以及附加导向环,该引导环布置在与引导环的轴向距离处并相对于框架刚性地布置。 叶轮的中心部分可以在与通过中心部分的内周的径向线成一定角度倾斜的平面内延伸。
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公开(公告)号:US5311089A
公开(公告)日:1994-05-10
申请号:US51462
申请日:1993-04-22
CPC分类号: H02K9/06
摘要: A hand machine tool has an electric motor, a radial fan driven by the electric motor and having an aspirating region and a stationary pre-spin grate located in the aspirating region of the radial fan directly upstream the radial fan as considered in an air flow direction and formed so that a supply air to the radial fan is deviated against a rotary direction of the radial fan.
摘要翻译: 手动工具具有电动机,由电动机驱动的径向风扇,具有吸入区域和静止的预旋转炉排,其位于径向风扇的吸入区域中,直接在径向风扇的上游沿空气流动方向 并且形成为使得径向风扇的供给空气偏离径向风扇的旋转方向。
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