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公开(公告)号：US5336069A
公开(公告)日：1994-08-09
申请号：US69088
申请日：1993-05-28
申请人： Tatsuo Matsuyama
发明人： Tatsuo Matsuyama
CPC分类号： F04C18/084 , F02B2053/005
摘要： In a fluid pump, a pair of rotors having different rotation phases and designed to come into slidable contact with each other are rotatably contained in a rotor housing so as to be brought into slidable contact with a housing inner wall, and a large arcuated surface having the same radius of curvature as that of a housing inner circumferential surface and a small arcuated surface having a radius of curvature obtained by subtracting a radius of the large arcuated surface from a distance between axes of the rotors are formed on an outer circumferential surface of each of the rotors. A transitional surface crossing a virtual boundary line extending from a rotor center at an angle of 45.degree. with respect to central axes of the large and small arcuated surfaces, which transitional surface is an outer surface, of the outer circumferential surface of each of the rotors, located between the large and small arcuated surfaces, is formed by an outer transitional surface constituted by a plurality of continuous convex surfaces extending from an intersection between the virtual boundary line and the transitional surface to an edge of the large arcuated surface and an inner transitional surface constituted by a plurality of continuous concave surfaces extending from the intersection to an edge of the small arcuated surface.
摘要翻译： 在流体泵中，具有不同旋转相位且被设计为彼此滑动接触的一对转子可旋转地容纳在转子壳体中，以便与壳体内壁滑动接触，并且具有大的弧形表面，其具有 在每个的外周面上形成与壳体内周面相同的曲率半径和具有通过从转子的轴线之间的距离减去大弧形表面的半径而获得的曲率半径的小的弧形表面 的转子。 从转子中心以相对于每个转子的外周面的过渡表面为外表面的大的和小的弧形表面的中心轴以45°的角度延伸的虚拟边界线的过渡表面 位于大弧形表面和小弧形表面之间的外部过渡表面由从虚拟边界线和过渡表面之间的交叉点延伸到大弧形表面的边缘的多个连续凸起表面构成的外部过渡表面和内部过渡表面 表面由从交叉点延伸到小弧形表面的边缘的多个连续凹面构成。
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12.发明授权
公开(公告)号：US5244353A
公开(公告)日：1993-09-14
申请号：US956243
申请日：1992-10-05
申请人： Jean-Marc Paquet , Luc Mathieu
发明人： Jean-Marc Paquet , Luc Mathieu
IPC分类号： F04C18/18 , F04B37/14 , F04B41/06 , F04B49/22 , F04C28/10 , F04C28/24 , F04C28/26 , F04C29/12
CPC分类号： F04C28/24 , F04B37/14 , F04B41/06 , F04B49/225
摘要： A Roots-type machine is connected to an enclosure to be evacuated via a suction inlet portion, and to a primary pump via a delivery outlet portion. A bellows is disposed transversely in the inlet portion, one end of the bellows being fixed in gastight manner in the wall, and the other end being closed and movable, so that the bellows forms a regulating member for regulating the gas-flow sectional area in the inlet portion. The outside face of the movable end of the bellows is subjected to the pressure in the inlet portion, and the inside face of the movable end is subjected to the pressure in the delivery outlet portion via a rod passing through the wall, and via a channel. The invention applies to Roots-type machines, in particular for automatically regulating the pumping speed so as to match it to the flow-rate of the corresponding primary pump.
摘要翻译： 罗茨式机器通过吸入口部分连接到要抽真空的外壳，并经由出口部分连接到主泵。 波纹管横向放置在入口部分中，波纹管的一端以气密的方式固定在壁中，另一端封闭并可移动，使得波纹管形成用于调节气流截面积的调节构件 入口部分。 波纹管的可动端的外表面受到入口部分的压力，可动端的内表面经由穿过壁的杆经过输送出口部分的压力，并且经由通道 。 本发明适用于罗茨式机器，特别是用于自动调节泵送速度，以便将其与相应的主泵的流量相匹配。
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公开(公告)号：US5013227A
公开(公告)日：1991-05-07
申请号：US434044
申请日：1989-11-07
CPC分类号： F04C23/001 , F01C21/102 , F04C2230/60 , F05B2230/60 , Y10T29/49236 , Y10T29/49242 , Y10T403/7056 , Y10T403/7069
摘要： The pump comprises a stator constituted by an alternating sucession of stator plates (22) and stator rings (21) defining a sequence of compression chambers (20), and a rotor assembly comprising two shafts (24, 25) each having a compression lobe (28) in each of the compression chambers (20), with the compression lobes being placed on and fixed to their shafts during assembly of the pump, thereby enabling the axial clearance between each lobe and the adjacent stator plate to be individually adjusted, with each lobe being constituted by a body (29) and a clamping plate (30) which is fixed to the body by screws (34) which compress a set of two conical rings (32, 33), one of which (33) penetrates into the other while being compressed radially, thereby fixing the lobe in place. The assembly melthod consists in using a assembly plate (23) having a portion of extra thickness j penetrating into the stator ring over a distance corresponding to the desired clearance between the lobes and the stator plate (22). The lobes are positioned angularly by means of rods (45) and they are positioned axially by thrusting them against the assembly plate (23) by means of assembly screws (48). Once this has been done, the lobes are fixed to their shafts by tightening the clamping screws (34) which compress the conical rings (32, 33) causing them to clamp against the shaft.
摘要翻译： 所述泵包括由定子板（22）和限定一系列压缩室（20）的定子环（21）构成的定子，以及包括两个轴（24,25）的转子组件，每个轴具有压缩叶片 每个压缩室（20）中的压缩室（28），其中压缩凸起在泵的组装期间被放置在其轴上并固定到它们的轴上，从而能够单独调节每个凸角和相邻的定子板之间的轴向间隙 叶片由主体（29）和夹板（30）构成，夹板通过螺钉（34）固定到主体上，该螺钉（34）压缩一组两个锥形环（32,33），其中一个（33） 其它同时被径向地压缩，从而将叶片固定在适当位置。 组件熔化方法包括使用具有额外厚度j的一部分穿过定子环的一部分的组装板（23），该距离对应于叶片和定子板（22）之间的期望间隙。 叶片通过杆（45）成角度地定位，并且它们通过借助于组装螺钉（48）将它们推向组装板（23）而轴向定位。 一旦这样做了，瓣通过拧紧压紧锥形环（32,33）的夹紧螺钉（34）固定到它们的轴上，使得它们被夹紧在轴上。
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公开(公告)号：US3941521A
公开(公告)日：1976-03-02
申请号：US501034
申请日：1974-08-28
申请人： Roger C. Weatherston
发明人： Roger C. Weatherston
CPC分类号： F04C18/126
摘要： A rotary compressor having a pair of rotatable impellers in mating engagement in working chambers, each impeller having a plurality of constant cross-sectional profiles, each profile having a plurality of lobes and wells, the trailing well region of each profile communicating with the leading well region of an adjacent profile, an inlet communicating with the working chambers and an outlet located out of the plane of at least one of the profiles on each impeller.
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公开(公告)号：US3915026A
公开(公告)日：1975-10-28
申请号：US49298474
申请日：1974-07-29
申请人： WALLACE MURRAY CORP
发明人： OTTO ALBERT D
CPC分类号： F16H1/08 , F04C29/0042 , Y10T74/1959
摘要： A gear mounting arrangement for lobe type air pumps. Angular adjustment between a gear (a form of hub) and its (lobe carrying) shaft permits a desired angular phase adjustment between the intermeshing lobes. The gear moves axially on its shaft and is held in place by positive screw or nut on one face and retained on the other face by a belleville spring. Rotation of the nut causes axial displacement of the gear and consequent phase adjustment.
摘要翻译： 用于叶型空气泵的齿轮安装装置。 齿轮（轮毂的形式）与其（凸角承载）轴之间的角度调节允许在相互啮合的叶片之间进行期望的角相位调节。 齿轮在其轴上轴向移动，并通过一个面上的正螺丝或螺母保持在适当的位置，并通过百叶窗弹簧保持在另一个面上。 螺母的旋转会导致齿轮的轴向位移和相应的相位调整。
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公开(公告)号：US3873247A
公开(公告)日：1975-03-25
申请号：US40630773
申请日：1973-10-15
申请人： BOES JEAN
发明人： BOES JEAN
IPC分类号： F02B53/00 , F01C1/077 , F03C2/02 , F04C2/063 , F04C18/077 , F04C18/18 , F16H1/28 , F01C21/00
CPC分类号： F01C1/077
摘要： A central axis rotary piston machine, e.g., a motor or a pump. A pair of diametrically opposed sector-shaped hollow blades are mounted on rotation on each of two coaxial shafts and arranged in a housing including a pair of flanges fixed to the blades and a fixed enclosure extending about the blades. Each flange is also provided with an opening in communication with the hollow interior of the blade on which it is fixed. The relative angular position of the blades on one shaft with respect to the blades on the other shaft is determined by meshing quasi-elliptical gear wheel in cooperation with a differential gear which is provided for reducing the forces of inertia for given angular velocities. The differential gear includes a differential wheel mounted for rotation with each of the shafts, star pinions, and gear wheels for mounting the star pinions which transmit power between the machine and means external to the machine and having relatively slow speed variations. The degree of compression in the chambers of variable volume formed between consecutive blades is determined by the formula : t Beta - delta / Alpha - delta where delta is the angle included between the radial side of the sector-shaped blades, and Alpha and Beta are the angles defining the limit positions of the center line of consecutive blades on alternate shafts movable towards and away from each other during the operating cycle of the machine.
摘要翻译： 中心轴旋转活塞机，例如马达或泵。 一对直径相对的扇形中空叶片在两个同轴轴的每一个上旋转安装，并且布置在壳体中，该壳体包括固定到叶片的一对凸缘和围绕叶片延伸的固定外壳。 每个凸缘还设置有与其固定的叶片的中空内部连通的开口。 叶片在一个轴上相对于另一个轴上的叶片的相对角位置由与提供用于减小给定角速度的惯性力的差速齿轮啮合准椭圆齿轮确定。 差速齿轮包括一个差速轮，其安装成与每个轴，星形小齿轮和齿轮一起旋转，用于安装在机器和机器外部的装置之间传递动力并且具有相对慢的速度变化的星形小齿轮。 在连续叶片之间形成的可变容积室中的压缩程度由下式确定：t =β-δ/α-δ，其中δ是扇形叶片的径向侧之间的角度，α和β 是在机器的操作周期期间限定连续叶片的中心线的极限位置的角度，该交替轴线可在彼此之间移动并远离彼此。
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公开(公告)号：US2211154A
公开(公告)日：1940-08-13
申请号：US2975235
申请日：1935-07-03
申请人： OSHEI CHARLES H
发明人： OSHEI CHARLES H
CPC分类号： B60K25/00 , F04C18/16 , F04C18/18 , Y10T74/2186
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公开(公告)号：US1424312A
公开(公告)日：1922-08-01
申请号：US37904220
申请日：1920-05-05
申请人： LEONARD GEORGE I
发明人： LEONARD GEORGE I
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公开(公告)号：US11293435B2
公开(公告)日：2022-04-05
申请号：US16326838
申请日：2017-08-08
申请人： Leybold GmbH
摘要： A vacuum pump screw rotor, comprising at least two helical displacer elements on a rotor shaft. The at least two displacer elements have different pitches, but the pitches of each displacer element are constant. Furthermore, the displacer elements each have a helical recess, each having a contour that remains the same over its entire length. Hereby, a suction-side displacer element has a recess having an asymmetric contour, and a pressure-side displacer element has a recess having a symmetrical contour.
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