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1. 发明申请

US20070098585A1 Vacuum pump 失效
标题翻译：真空泵
公开(公告)号：US20070098585A1
公开(公告)日：2007-05-03
申请号：US11591077
申请日：2006-10-31
申请人： Shinya Yamamoto , Ryosuke Koshizaka , Yuya Izawa , Masahiro Inagaki , Kentaro Ishihara
发明人： Shinya Yamamoto , Ryosuke Koshizaka , Yuya Izawa , Masahiro Inagaki , Kentaro Ishihara
IPC分类号： F04C2/00 , F01C1/16 , F01C1/24 , F03C2/00 , F03C4/00
CPC分类号： F04C29/023 , F04C2/102 , F04C18/16 , F04C29/025 , F04C2220/12 , F04C2240/51 , F04D29/059 , F04D29/063 , F16C33/6674 , F16C2360/42 , F16C2360/43
摘要： A vacuum pump includes a housing assembly having an oil-reservoir chamber in which a lubricating oil is stored; a pair of screw rotors disposed in the housing assembly and engaged with each other; a pair of rotary shafts connected to the rotors, respectively; a plurality of bearings supporting each of the rotary shafts and having an opening; an oil-feed pump for feeding the lubricating oil from the oil-reservoir chamber to the bearing; an oil-circulation passage provided for circulating the lubricating oil from the oil-feed pump to the oil-reservoir chamber through the bearing; a cover provided at the opening of the bearing to close the opening of the bearing with a clearance remained, the cover permitting the lubricating oil to enter the bearing through the clearance; and an oil-escape passage provided adjacent to the bearing for returning to the oil-reservoir chamber the lubricating oil not entering the bearing.
摘要翻译：真空泵包括壳体组件，其具有存储润滑油的储油室; 一对螺旋转子，其设置在所述壳体组件中并彼此接合; 分别连接到转子的一对旋转轴; 多个轴承，其支撑每个旋转轴并具有开口; 用于将润滑油从储油室供给到轴承的给油泵; 油循环通道，用于使润滑油从供油泵通过轴承循环到储油室; 设置在轴承的开口处的盖子保留了间隙以关闭轴承的开口，盖子允许润滑油通过间隙进入轴承; 以及与所述轴承相邻设置的用于使所述润滑油不进入所述轴承的油回流通道。

2. 发明申请

US20100233006A1 SCREW-TYPE FLUID MACHINE 审中-公开
标题翻译：螺旋型流体机
公开(公告)号：US20100233006A1
公开(公告)日：2010-09-16
申请号：US12159186
申请日：2006-12-26
申请人： Shinya Yamamoto , Ryosuke Koshizaka , Kentaro Ishihara , Masahiro Inagaki , Yuya Izawa
发明人： Shinya Yamamoto , Ryosuke Koshizaka , Kentaro Ishihara , Masahiro Inagaki , Yuya Izawa
IPC分类号： F01C1/18
CPC分类号： F04C29/025 , F04C18/16 , F04C29/023 , F04C29/04 , F04C2220/10
摘要： A vacuum pump includes rotary shafts connected to a pair of screw-type rotors, respectively, and a pair of shaft retainers extending in the housing. Each shaft retainer supports the corresponding rotary shaft by means of a proximal bearing portion and a distal bearing portion. Each pair of the proximal and distal bearing portions are fixed in the axial direction with respect to the corresponding rotary shaft and shaft retainer. Lubricant oil is stored in an oil storage space in a gear case attached to the housing. A cooling water passage through which cooling water to cool the lubricant oil passes is formed in the gear case. A controller controls the flow rate of the cooling fluid, so that the temperature of the lubricant oil in the oil storage space is kept constant. With this configuration, when the bearing portions are fixed in the axial direction with respect to the rotary shafts and the shaft retainers, it is possible to prevent load from being applied to the bearing portions in the axial direction.
摘要翻译：真空泵包括分别连接到一对螺杆式转子的旋转轴和在壳体中延伸的一对轴保持器。每个轴保持器通过近侧轴承部分和远侧轴承部分支撑相应的旋转轴。每对近端和远端轴承部分相对于相应的旋转轴和轴保持器沿轴向固定。润滑油储存在附接到壳体的齿轮箱中的储油空间中。在齿轮箱中形成有用于冷却润滑油的冷却水通过的冷却水通道。控制器控制冷却流体的流量，使得储油空间中的润滑油的温度保持恒定。利用这种构造，当轴承部分相对于旋转轴和轴保持器沿轴向方向固定时，可以防止在轴向方向上对轴承部分施加负载。

3. 发明授权

US07458790B2 Vacuum pump with improved oil lubrication 失效
标题翻译：真空泵具有改善的油润滑
公开(公告)号：US07458790B2
公开(公告)日：2008-12-02
申请号：US11591077
申请日：2006-10-31
申请人： Shinya Yamamoto , Ryosuke Koshizaka , Yuya Izawa , Masahiro Inagaki , Kentaro Ishihara
发明人： Shinya Yamamoto , Ryosuke Koshizaka , Yuya Izawa , Masahiro Inagaki , Kentaro Ishihara
IPC分类号： F03C2/00 , F04C2/00 , F04C27/02
CPC分类号： F04C29/023 , F04C2/102 , F04C18/16 , F04C29/025 , F04C2220/12 , F04C2240/51 , F04D29/059 , F04D29/063 , F16C33/6674 , F16C2360/42 , F16C2360/43
摘要： A vacuum pump includes a housing assembly having an oil-reservoir chamber in which a lubricating oil is stored; a pair of screw rotors disposed in the housing assembly and engaged with each other; a pair of rotary shafts connected to the rotors, respectively; a plurality of bearings supporting each of the rotary shafts and having an opening; an oil-feed pump for feeding the lubricating oil from the oil-reservoir chamber to the bearing; an oil-circulation passage provided for circulating the lubricating oil from the oil-feed pump to the oil-reservoir chamber through the bearing; a cover provided at the opening of the bearing to close the opening of the bearing with a clearance remained, the cover permitting the lubricating oil to enter the bearing through the clearance; and an oil-escape passage provided adjacent to the bearing for returning to the oil-reservoir chamber the lubricating oil not entering the bearing.
摘要翻译：真空泵包括壳体组件，其具有存储润滑油的储油室; 一对螺旋转子，其设置在所述壳体组件中并彼此接合; 分别连接到转子的一对旋转轴; 多个轴承，其支撑每个旋转轴并具有开口; 用于将润滑油从储油室供给到轴承的给油泵; 油循环通道，用于使润滑油从供油泵通过轴承循环到储油室; 设置在轴承的开口处的盖子保留了间隙以关闭轴承的开口，盖子允许润滑油通过间隙进入轴承; 以及与所述轴承相邻设置的用于使所述润滑油不进入所述轴承的油回流通道。

4. 发明授权

US07798794B2 Screw pump and screw rotor 失效
标题翻译：螺杆泵和螺杆转子
公开(公告)号：US07798794B2
公开(公告)日：2010-09-21
申请号：US11992700
申请日：2007-09-03
申请人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
发明人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
IPC分类号： F04C18/00 , F04C2/00
CPC分类号： F04C2/107 , F04C2/16
摘要： A cross section of a tooth profile of a first screw rotor (17) perpendicular to the rotor axis includes a tooth top arc (A1B1), a tooth bottom arc (C1D1), a first curve (A1C1), and a second curve (B1D1). The first curve (A1C1) is a first trochoidal curve that connects a first end (A1) of the tooth top arc (A1B1) to a second end (C1) of the tooth bottom arc (C1D1). The second curve (B1D1) connects the second end (B1) of the tooth top arc (A1B1) to the first end (D1) of the tooth bottom arc (C1D1). The second curve (B1D1) is a composite curve formed by an involute curve (B1E1) and a second trochoidal curve (E1D1), which extend continuously from each other at a first intersection point (E1). A screw pump (11) thus suppresses leakage of fluid with improved performance.
摘要翻译：垂直于转子轴线的第一螺杆转子（17）的齿廓的横截面包括齿顶弧（A1B1），齿底弧（C1D1），第一曲线（A1C1）和第二曲线（B1D1 ）。第一曲线（A1C1）是将齿顶弧（A1B1）的第一端（A1）与齿底弧（C1D1）的第二端（C1）连接的第一弯曲曲线。第二曲线（B1D1）将齿顶弧（A1B1）的第二端（B1）与齿底弧（C1D1）的第一端（D1）连接。第二曲线（B1D1）是通过在第一交点（E1）处彼此连续延伸的渐开线曲线（B1E1）和第二偏摆曲线（E1D1）形成的复合曲线。因此，螺杆泵（11）能够以改进的性能来抑制流体泄漏。

5. 发明申请

US20100178191A1 Screw Pump and Screw Rotor 失效
标题翻译：螺杆泵和螺杆转子
公开(公告)号：US20100178191A1
公开(公告)日：2010-07-15
申请号：US11992700
申请日：2007-09-03
申请人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
发明人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
IPC分类号： F04C2/16
CPC分类号： F04C2/107 , F04C2/16
摘要： A cross section of a tooth profile of a first screw rotor (17) perpendicular to the rotor axis includes a tooth top arc (A1B1), a tooth bottom arc (C1D1), a first curve (A1C1), and a second curve (B1D1). The first curve (A1C1) is a first trochoidal curve that connects a first end (A1) of the tooth top arc (A1B1) to a second end (C1) of the tooth bottom arc (C1D1). The second curve (B1D1) connects the second end (B1) of the tooth top arc (A1B1) to the first end (D1) of the tooth bottom arc (C1D1). The second curve (B1D1) is a composite curve formed by an involute curve (B1E1) and a second trochoidal curve (E1D1), which extend continuously from each other at a first intersection point (E1). A screw pump (11) thus suppresses leakage of fluid with improved performance.
摘要翻译：垂直于转子轴线的第一螺杆转子（17）的齿廓的横截面包括齿顶弧（A1B1），齿底弧（C1D1），第一曲线（A1C1）和第二曲线（B1D1 ）。第一曲线（A1C1）是将齿顶弧（A1B1）的第一端（A1）与齿底弧（C1D1）的第二端（C1）连接的第一弯曲曲线。第二曲线（B1D1）将齿顶弧（A1B1）的第二端（B1）与齿底弧（C1D1）的第一端（D1）连接。第二曲线（B1D1）是通过在第一交点（E1）处彼此连续延伸的渐开线曲线（B1E1）和第二偏摆曲线（E1D1）形成的复合曲线。因此，螺杆泵（11）能够以改进的性能来抑制流体泄漏。

6. 发明申请

US20090285711A1 FLUID MACHINE 有权
标题翻译：流体机
公开(公告)号：US20090285711A1
公开(公告)日：2009-11-19
申请号：US12440690
申请日：2008-07-17
申请人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
发明人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
IPC分类号： F04C29/00
CPC分类号： F01C1/126 , F01C1/086 , F01C11/002 , F01C19/125 , F01C21/02 , F01C21/10 , F04C2230/60 , F04C2240/56
摘要： A housing of a Roots pump is configured by joining a lower housing member and an upper housing member that are separable from each other. With the upper and lower housing members joined together, an upper accommodating portion and a lower accommodating portion form a front bearing accommodating portion and a rear bearing accommodating portion, which accommodate whole bearings, respectively. The Roots pump further includes bearing holders attached to the bearings and fixed to the lower housing member so that the bearings are received in the lower accommodating portion in a positioned state.
摘要翻译：罗茨泵的壳体通过连接可彼此分离的下壳体构件和上壳体构件而构成。在上壳体构件和下壳体连接在一起的情况下，上容纳部分和下容纳部分分别形成容纳整个轴承的前轴承容纳部分和后轴承容纳部分。罗茨泵还包括附接到轴承并固定到下壳体构件的轴承座，使得轴承在定位状态下容纳在下容纳部分中。

7. 发明授权

US07497672B2 Screw pump with increased volume of fluid to be transferred 失效
标题翻译：螺杆泵具有增加流体体积的传递
公开(公告)号：US07497672B2
公开(公告)日：2009-03-03
申请号：US11891531
申请日：2007-08-09
申请人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
发明人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
IPC分类号： F03C2/00 , F03C4/00 , F04C2/00
CPC分类号： F04C18/16 , F01C21/108 , F04C18/084 , F04C25/02 , F04C29/12
摘要： A screw pump includes a housing and a pair of intermeshing screw rotors. An end face of the rotor adjacent to an inlet port of the housing is provided with an inlet opening. Each rotor has a first portion whose lead angle changes. The first portions and the housing cooperate to form an inlet space. During rotation of the rotors, communication between the inlet space and the inlet port is blocked by the first portions and the housing thereby to form a closed pump space adjacent to the inlet space. Volume of the pump space is set smaller than the maximum volume of the inlet space. A closure member is provided which covers at least a part of the inlet openings. The closure member closes the inlet space when the volume of the inlet space exceeds that of the pump space.
摘要翻译：螺杆泵包括壳体和一对相互啮合的螺杆转子。与壳体的入口相邻的转子的端面设置有入口开口。每个转子具有引导角改变的第一部分。第一部分和壳体协作形成入口空间。在转子旋转期间，入口空间和入口之间的连通被第一部分和壳体阻挡，从而在入口空间附近形成封闭的泵空间。泵空间的容积设定为小于入口空间的最大体积。提供封闭构件，其覆盖入口开口的至少一部分。当入口空间的体积超过泵的空间时，封闭构件封闭入口空间。

8. 发明授权

US08556607B2 Screw rotor 有权
标题翻译：螺丝转子
公开(公告)号：US08556607B2
公开(公告)日：2013-10-15
申请号：US12837575
申请日：2010-07-16
申请人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
发明人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
IPC分类号： F01C21/10
CPC分类号： F04C2/16 , F04C2/123 , F04C11/005 , F04C14/02
摘要： A screw rotor is for use in a screw pump that pumps fluid by rotation of a pair of screw rotors engaged with each other in a rotor housing. The screw rotor includes a multiple-thread portion for pump suction side and a single-thread portion for pump discharge side. The screw rotor is formed so that the tooth profile of the multiple-thread portion is connected to the tooth profile of the single-thread portion through a boundary plane that is perpendicular to the rotation axis of the screw rotor. The first curved portion coincides with the third curved portion in the boundary plane.
摘要翻译：螺杆转子用于螺旋泵，其通过在转子壳体中彼此接合的一对螺杆转子的旋转来泵送流体。螺杆转子包括用于泵吸入侧的多螺纹部分和用于泵排出侧的单螺纹部分。螺杆转子形成为使得多螺纹部分的齿廓通过与螺杆转子的旋转轴线垂直的边界平面连接到单螺纹部分的齿廓。第一弯曲部分与边界平面中的第三弯曲部分重合。

9. 发明授权

US08348650B2 Root pump 有权
标题翻译：根泵
公开(公告)号：US08348650B2
公开(公告)日：2013-01-08
申请号：US12440690
申请日：2008-07-17
申请人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
发明人： Masahiro Inagaki , Shinya Yamamoto , Makoto Yoshikawa , Yuya Izawa
IPC分类号： F04C18/00 , F04C2/00
CPC分类号： F01C1/126 , F01C1/086 , F01C11/002 , F01C19/125 , F01C21/02 , F01C21/10 , F04C2230/60 , F04C2240/56
摘要： A housing of a Roots pump is configured by joining a lower housing member and an upper housing member that are separable from each other. With the upper and lower housing members joined together, an upper accommodating portion and a lower accommodating portion form a front bearing accommodating portion and a rear bearing accommodating portion, which accommodate whole bearings, respectively. The Roots pump further includes bearing holders attached to the bearings and fixed to the lower housing member so that the bearings are received in the lower accommodating portion in a positioned state.
摘要翻译：罗茨泵的壳体通过连接可彼此分离的下壳体构件和上壳体构件而构成。在上壳体构件和下壳体连接在一起的情况下，上容纳部分和下容纳部分分别形成容纳整个轴承的前轴承容纳部分和后轴承容纳部分。罗茨泵还包括附接到轴承并固定到下壳体构件的轴承座，使得轴承在定位状态下容纳在下容纳部分中。

10. 发明授权

US07484943B2 Screw pump with improved efficiency of drawing fluid 失效
标题翻译：螺杆泵提高了拉液效率
公开(公告)号：US07484943B2
公开(公告)日：2009-02-03
申请号：US11891532
申请日：2007-08-09
申请人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
发明人： Yuya Izawa , Shinya Yamamoto , Masahiro Inagaki , Makoto Yoshikawa
IPC分类号： F04C2/00 , F04C11/00 , F04C23/00
CPC分类号： F04C18/084 , F04C18/16
摘要： A screw pump includes a housing and a pair of intermeshing screw rotors. The housing has an inlet port and an outlet port. Each rotor has a first portion whose lead angle decreases. The first portion and the housing form an inlet space and a pump space. Winding angle of the first portion has a first region and a second region. The first region is located in a predetermined range from the end on the first portion adjacent to the inlet port toward the outlet port. The second region is located adjacent to the first region. Reduction rate of the lead angle of the first portion in the first region is set smaller than that in the second region. The maximum lead angle of the first portion is set smaller than a lead angle which decreases at a constant rate in the first region and the second region.
摘要翻译：螺杆泵包括壳体和一对相互啮合的螺杆转子。壳体具有入口和出口。每个转子具有引导角减小的第一部分。第一部分和壳体形成入口空间和泵空间。第一部分的卷绕角度具有第一区域和第二区域。第一区域位于与入口相邻的第一部分的端部朝向出口的预定范围内。第二区域位于第一区域附近。第一区域中的第一部分的引导角的减小率被设定为小于第二区域的降低率。第一部分的最大引导角被设定为小于在第一区域和第二区域以恒定速率减小的引导角。

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