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1. 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。

2. 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。

3. 发明申请

US20120014825A1 ROOTS TYPE FLUID MACHINE 有权
标题翻译：滚筒式流体机
公开(公告)号：US20120014825A1
公开(公告)日：2012-01-19
申请号：US13180873
申请日：2011-07-12
申请人： Yuya Izawa , Shinya Yamamoto , Takashi Ban , Takayuki Imai , Katsumi Yamashita , Yasunaka Hanaoka
发明人： Yuya Izawa , Shinya Yamamoto , Takashi Ban , Takayuki Imai , Katsumi Yamashita , Yasunaka Hanaoka
IPC分类号： F04C15/06
CPC分类号： F04C18/084 , F04C18/086 , F04C18/126 , F04C27/006 , F04C29/122
摘要： A roots type fluid machine includes a case having a side wall, a pair of rotary shafts provided in the case, a pair of rotors engaged with each other and fixed to the pair of rotary shafts so as to extend axially, respectively, a suction space formed by the case and the pair of rotors for introducing fluid, a discharge space formed by the case for discharging fluid and the pair of rotors and a transfer chamber formed by the case and the rotor. The rotor has a rotor end surface. A clearance is formed between the side wall and the rotor end surface. The transfer chamber transfers gas introduced in the suction space to the discharge space in accordance with the rotation of the pair of rotors. The case has a guide groove formed in the side wall facing the rotor end surface. Gas leaked from the discharge space into the clearance is introduced to the transfer chamber through the guide groove.
摘要翻译：根型流体机械包括具有侧壁的壳体，设置在壳体中的一对旋转轴，一对彼此接合并固定到一对旋转轴的转子，以分别轴向延伸到吸入空间由壳体和用于引入流体的一对转子形成，由用于排出流体的壳体和一对转子形成的排出空间以及由壳体和转子形成的传送室。转子具有转子端面。在侧壁和转子端面之间形成间隙。传送室根据一对转子的旋转将吸入空间中引入的气体传送到放电空间。壳体具有形成在面向转子端面的侧壁中的引导槽。从排出空间泄漏到间隙的气体通过引导槽被引入传送室。

4. 发明申请

US20120230858A1 SCREW PUMP 审中-公开
标题翻译：螺丝泵
公开(公告)号：US20120230858A1
公开(公告)日：2012-09-13
申请号：US13416795
申请日：2012-03-09
申请人： Yuya IZAWA , Satoshi UMEMURA , Takahisa BAN , Taku INOUE
发明人： Yuya IZAWA , Satoshi UMEMURA , Takahisa BAN , Taku INOUE
IPC分类号： F01C1/16
CPC分类号： F04C18/16 , F04C18/084 , F04C2220/10
摘要： A first rotor and a second rotor have helical teeth each including a dedendum portion, an addendum portion, and an addendum tip portion. Profiles of the addendum portions of the first and second rotors are formed by cycloidal curves. Profiles of the dedendum portions of the first and second rotors are formed by trochoidal curves. A pitch circle of the second rotor is larger than that of the first rotor. The number of teeth of the second rotor is larger than that of the first rotor. A width angle of the first rotor is not less than a minimum angle at which the addendum tip portions of the first rotor are in line contact with an outer circle of the first rotor, and not more than an angle at which a discharge volume ratio is approximately equal to that at the minimum angle.
摘要翻译：第一转子和第二转子具有各自包括齿根部分，齿顶部分和齿顶部部分的螺旋齿。第一和第二转子的齿顶部分的轮廓由摆线曲线形成。第一和第二转子的齿根部分的轮廓由摆线曲线形成。第二转子的节圆大于第一转子的节圆。第二转子的齿数大于第一转子的齿数。第一转子的宽度角不小于第一转子的齿顶部与第一转子的外周线接触的最小角度，并且不大于排出体积比为大约等于最小角度。

5. 发明申请

US20110020162A1 SCREW ROTOR 有权
标题翻译：螺丝转子
公开(公告)号：US20110020162A1
公开(公告)日：2011-01-27
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： F04C3/04
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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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