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发明授权
CN1880766B 用于罗茨型增压器的具有最优化螺旋角的转子 有权 转让

用于罗茨型增压器的具有最优化螺旋角的转子
摘要：
本发明涉及用于罗茨型增压器的具有最优化螺旋角的转子。一种用于罗茨型鼓风机的转子的设计方法，该鼓风机包括具有圆柱腔室的壳体，该壳体限定出口孔(19)。鼓风机包括设置在腔室内的啮合并带有叶片的转子(37，39)，每个转子包括N多个叶片(47，49)，每个叶片具有第一(47s1，49s1)和第二(47s2，49s2)轴向朝向端面。每个叶片的轴向朝向端面限定扭转角(TA)，并且每个叶片限定螺旋角(HA)。转子的设计方法包括根据转子上叶片的个数N确定最大理想扭转角(TAM)，然后根据最大理想扭转角(TAM)和叶片端面间轴向长度(L)确定每个叶片的螺旋角(HA)。
摘要（英）：

A method of designing rotors for a Roots blower comprising a housing having cylindrical chambers, the housing defining an outlet port (19). The blower includes meshed, lobed rotors (37,39) disposed inthe chambers, each rotor including a plurality N of lobes (47,49), each lobe having first (47a,49a) and second (47b,49b) axially facing end surfaces. Each lobe has its axially facing surfaces defining a twist angle (TA), and each lobe defines a helix angle (HA). The method of designing the rotor comprises determining a maximum ideal twist angle (TA M ) for the lobe as a function of the number N of lobes on the rotor, and then determining a helix angle (HA) for each lobe as a function of the maximum ideal twist angle (TA M ) and an axial length (L) between the end surfaces of the lobe.

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