Roots type blower
    42.
    发明授权
    Roots type blower 失效
    罗茨式鼓风机

    公开(公告)号:US4666385A

    公开(公告)日:1987-05-19

    申请号:US698821

    申请日:1985-02-06

    CPC分类号: F04C18/084 F04C18/16

    摘要: A Roots type blower is disclosed having rotors with twisted-shape and projections on the pitch circle. The blower is compact in the axial direction, because the projections work as gearing between the rotors. Therefor, it is not necessary to provide additional gears for driving the rotors. Each of the rotors has a twisted-shape with a relationship of n.times..theta..gtoreq.2.pi., where n is the number of leaves and .theta. is the lead angle.

    摘要翻译: 公开了一种罗茨式鼓风机,其具有在节圆上具有扭曲形状和突起的转子。 鼓风机在轴向方向上紧凑,因为凸起作为转子之间的齿轮传动。 因此,不需要提供用于驱动转子的附加齿轮。 每个转子具有nxθ> / =2π的关系的扭曲形状,其中n是叶子的数量,θ是导程角。

    Backflow passage for rotary positive displacement blower
    43.
    发明授权
    Backflow passage for rotary positive displacement blower 失效
    旋转式容积式鼓风机回流通道

    公开(公告)号:US4643655A

    公开(公告)日:1987-02-17

    申请号:US805022

    申请日:1985-12-05

    IPC分类号: F04C18/18 F04C18/16 F04C29/00

    CPC分类号: F04C18/16 F04C29/0035

    摘要: An improved rotory positive displacement blower (10) of the Roots-type with reduced airborne noise and superior efficiency. The blower includes a housing (12) defining generally cylindrical chambers (32, 34) having cylindrical wall surfaces (20a, 20b) and containing meshed lobed rotors (14, 16) having the lobes (14a, 14b, 14c, 16a, 16b, 16c) thereon formed with an end-to-end helical twist according to the relation 360.degree./2n, where n equals the number of lobes per rotor. Preferably, n equals three. The blower housing (12) also defines inlet and outlet ports (36, 38) and the intersections of wall surfaces (20a, 20b) define a cusp (20d) associated with the inlet port (36) and a cusp (20e) associated with outlet port (38). The inlet and outlet port openings are skewed in opposite directions to increase the time the top lands of the lobes are in sealing relation with cylindrical walls (20a, 20b) of chambers ( 32, 34). Transverse boundaries (20g, 20i) of the inlet port are traversed by the lobes prior to traversal of the inlet port cusp (20d) by trailing ends (14h, 16h) of the lobes. In a similar manner, the transverse boundaries (20n, 20r) of the outlet port are traversed by the lobes subsequent to traversal of the outlet port cusp (20e) by leading ends (14g, 16g) of the lobes. A portion of the cusp (20e) adjacent leading ends (14g, 16g) of the lobes is removed to provide a backflow passage for intercommunicating transfer volumes of one rotor not in direct communication with the outlet port with transfer volumes of the other rotor already in direct communication with the outlet port.

    摘要翻译: 一种改进的罗茨式旋转式容积式鼓风机(10),具有降低的空气噪声和卓越的效率。 鼓风机包括限定具有圆柱形壁表面(20a,20b)的大致圆柱形的腔室(32,34)的壳体(12),并且包含具有凸角(14a,14b,14c,16a,16b, 16c),其根据360°/ 2n的关系形成为端对端螺旋扭转,其中n等于每个转子的叶数。 优选地,n等于3。 鼓风机壳体(12)还限定入口和出口端口(36,38),并且壁表面(20a,20b)的交叉点限定了与入口端口(36)相关联的尖端(20d)和与 出口(38)。 入口和出口开口沿相反方向倾斜,以增加叶片的顶部平台与腔室(32,34)的圆柱形壁(20a,20b)密封的时间。 在通过叶片的尾端(14h,16h)穿过入口端口尖端(20d)之前,入口端口的横向边界(20g,20i)由叶片穿过。 以类似的方式,出口端口的横向边界(20n,20r)在叶片的前端(14g,16g)穿过出口端口尖端(20e)之后被叶片横穿。 去除与叶片相邻的前端(14g,16g)的一部分尖端(20e),以提供一个回流通道,用于相互连通一个转子的传送体积,而不是与另一个转子的传送体积直接连通 与出口直接通讯。

    Lobe rotor pumps
    44.
    发明授权
    Lobe rotor pumps 失效
    叶轮转子泵

    公开(公告)号:US4621994A

    公开(公告)日:1986-11-11

    申请号:US684135

    申请日:1984-12-20

    申请人: George W. Ellis

    发明人: George W. Ellis

    摘要: A lobe rotor pump including a casing (10) and two lobe rotors (16, 18) the rotors each having, coaxial with its axis of rotation, an axially extending cylindrical sleeve (20, 22) formed integrally therewith. A seal (33-37) is mounted in a fluidtight manner within the casing (10) and seals against the outer cylindrical surface of the sleeve. A blind bore (21, 23), which is closed at the rotor end, (24, 25) has therewithin a drive shaft (28, 30) and retaining means (42 to 57) are provided to hold the sleeve and the rotor on the drive shaft with the drive connection engaged, said retaining means being located on the side of the seal (33-37) remote from the rotor.

    摘要翻译: 一种叶瓣转子泵,包括壳体(10)和两个叶片转子(16,18),所述转子与其旋转轴线同轴地与其一体形成的轴向延伸的圆柱形套筒(20,22)。 密封件(33-37)以液密方式安装在壳体(10)内并且密封住套筒的外圆柱形表面。 在转子端(24,25)处封闭的盲孔(21,23)在其中具有驱动轴(28,30),并且提供保持装置(42至57)以将套筒和转子保持在 所述驱动轴与驱动连接接合,所述保持装置位于远离转子的密封件(33-37)侧。

    Supercharger rotor, shaft, and gear arrangement
    45.
    发明授权
    Supercharger rotor, shaft, and gear arrangement 失效
    增压器转子,轴和齿轮装置

    公开(公告)号:US4595349A

    公开(公告)日:1986-06-17

    申请号:US506073

    申请日:1983-06-20

    摘要: An improved supercharger (10) of the Roots-type. The supercharger includes a three-piece housing assembly (14, 16, 18) defining generally cylindrical chambers containing two rotors (20, 22) having meshed lobes (20c, 22c) of modified involute profile which pump air from an unshown inlet to an outlet (56). The rotors are fixed to stepped diameter shafts (24, 26) pressed into centrally located through bores in the rotors. Straight splines (24e, 26e) on the shafts form mating splines in the rotor bores to prevent rotation of the shafts in the bores. Bearing assembly (28, 30) disposed at adjacent ends (20a, 22a) of the rotors support one end of the rotors in the housing and fix the axial position of that end of rotors relative to the housing. Bearing assemblies (32, 34) at the outer adjacent ends (20b, 22b) of the rotors support the other end of the rotors in the housing. The bearing assemblies (32, 34) include inner races pressed on shaft bosses (24b, 26b) and outer races slidably disposed in wear-resistant sleeves pressed into bores in housing end section 18. The outer races of bearing assemblies (32, 34) are biased away from bearing assemblies (29, 30) to remove radial and axial bearing play in all of the bearing assemblies.

    摘要翻译: 一种改进的Roots型增压器(10)。 增压器包括三件式的壳体组件(14,16,18),其限定大体上圆柱形的腔室,其包含具有改进的渐开线轮廓的网状凸角(20c,22c)的两个转子(20,22),其将空气从未示出的入口泵送到出口 (56)。 转子被固定到通过转子中的孔的中心位置的阶梯形直径轴(24,26)。 轴上的直花键(24e,26e)在转子孔中形成配合花键,以防止轴在孔中旋转。 设置在转子的相邻端部(20a,22a)处的轴承组件(28,30)将转子的一端支撑在壳体中并固定转子的该端部相对于壳体的轴向位置。 在转子的外相邻端(20b,22b)处的轴承组件(32,34)支撑转子在壳体中的另一端。 轴承组件(32,34)包括压在轴凸台(24b,26b)上的内座圈和可滑动地设置在压入壳体端部部分18中的孔中的耐磨套筒中的外座圈。轴承组件(32,34)的外座圈 被偏压远离轴承组件(29,30)以去除所有轴承组件中的径向和轴向的滚动。

    Rotary positive displacement machine
    46.
    发明授权
    Rotary positive displacement machine 失效
    旋转正排量机

    公开(公告)号:US4406601A

    公开(公告)日:1983-09-27

    申请号:US222050

    申请日:1981-01-02

    申请人: Joseph L. Towner

    发明人: Joseph L. Towner

    IPC分类号: F01C1/12 F01C1/18 F04C18/18

    CPC分类号: F01C1/123

    摘要: The invention concerns the formation of the high pressure port in a rotary, positive displacement machine, such as a gas compressor, with an extension which is traversed by the plane on which the parallel axes of the rotors are commonly positioned. A given portion of the port extension is constantly occluded by the gating rotor and, consequently does not add to the effective area of the port. However, the remaining portion of the extension is exposed by the gating rotor, effectively defining a port opening which reaches to the common plane. Thus, in gas compressor use of the machine, the port extension insures that all the compressed gas product is delivered through the exhaust port.

    摘要翻译: 本发明涉及在诸如气体压缩机的旋转容积式机器中形成高压端口,其具有由转子的平行轴线共同定位在其上的平面穿过的延伸部。 端口延伸部分的一部分由门控转子恒定地闭塞,因此不会增加端口的有效面积。 然而,延伸部的剩余部分由门控转子露出,有效地限定了到达公共平面的端口开口。 因此,在气体压缩机使用机器时,端口延伸部确保所有压缩气体产品通过排气口输送。