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Patent Agency Ranking
公开(公告)号：CN1299002C
公开(公告)日：2007-02-07
申请号：CN200410035232.7
申请日：2004-03-12
Applicant: 株式会社丰田自动织机
CPC classification number: F04C2/18 , F04C2/086 , F04C11/001 , F04C15/0038 , F04C2210/20 , F04C2210/201
Abstract: 一种具有泵部的两级齿轮泵。泵部具有位于在邻接于从动齿轮、并相对从动轴圆柱表面设置的内部空间。第一齿轮组的排出部通过连通通道与第二齿轮组的吸入部相连通。内部空间通过压力导入通道与连通通道相连通。连通通道中的压力通过压力导入通道导入到内部空间中，从而内部空间中的压力气体是一中间压力气体，其压力介于泵部的吸入压力和排出压力之间。
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公开(公告)号：CN1534195A
公开(公告)日：2004-10-06
申请号：CN200410035232.7
申请日：2004-03-12
Applicant: 株式会社丰田自动织机
CPC classification number: F04C2/18 , F04C2/086 , F04C11/001 , F04C15/0038 , F04C2210/20 , F04C2210/201
Abstract: 一种具有泵部的两级齿轮泵。泵部具有位于在邻接于从动齿轮、并相对从动轴圆柱表面设置的内部空间。第一齿轮组的排出部通过连通通道与第二齿轮组的吸入部相连通。内部空间通过压力导入通道与连通通道相连通。连通通道中的压力通过压力导入通道导入到内部空间中，从而内部空间中的压力气体是一中间压力气体，其压力介于泵部的吸入压力和排出压力之间。
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公开(公告)号：US20040179953A1
公开(公告)日：2004-09-16
申请号：US10798136
申请日：2004-03-10
Inventor： Shigeru Suzuki , Toshiro Fujii
IPC: F04B049/00
CPC classification number: F04C2/18 , F04C2/086 , F04C11/001 , F04C15/0038 , F04C2210/20 , F04C2210/201
Abstract: A two-stage gear pump has a pump section. The pump section has an internal space that is located adjacent to a driven gear and about a cylindrical surface of the driven shaft. A discharge section of a first gear train is connected to a suction section of a second gear train with a communication passage. The internal space is connected to the communication passage with a pressure introduction passage. The pressure of the communication passage is introduced to the internal space by the pressure introduction passage, so that the pressure atmosphere of the internal space is an intermediate pressure atmosphere of the suction pressure and the discharge pressure of the pump section.
Abstract translation: 两级齿轮泵有泵部分。 泵部分具有位于从动齿轮附近并且围绕从动轴的圆柱形表面的内部空间。 第一齿轮系的排出部分连接到具有连通通道的第二齿轮系的抽吸部分。 内部空间通过压力引导通道连接到连通通道。 连通通道的压力通过压力引入通道引入内部空间，使得内部空间的压力气氛是吸入压力和泵部的排出压力的中间压力气氛。
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公开(公告)号：EP1457678A1
公开(公告)日：2004-09-15
申请号：EP04005946.1
申请日：2004-03-11
Applicant: Kabushiki Kaisha Toyota Jidoshokki
Inventor： Suzuki, Shigeru , Fujii, Toshiro
CPC classification number: F04C2/18 , F04C2/086 , F04C11/001 , F04C15/0038 , F04C2210/20 , F04C2210/201
Abstract: A two-stage gear pump has a pump section. The pump section has an internal space (51,52) that is located adjacent to a driven gear and about a cylindrical surface of the driven shaft. A discharge section of a first gear train is connected to a suction section of a second gear train with a communication passage (43). The internal space is connected to the communication passage with a pressure introduction passage (67,72). The pressure of the communication passage is introduced to the internal space by the pressure introduction passage, so that the pressure atmosphere of the internal space is an intermediate pressure atmosphere of the suction pressure and the discharge pressure of the pump section.
Abstract translation: 两级齿轮泵具有泵部。 泵部分具有位于从动齿轮附近并且围绕从动轴的圆柱形表面的内部空间（51,52）。 第一齿轮系的排出部分连接到具有连通通道（43）的第二齿轮系的抽吸部分。 内部空间通过压力引入通道连接到连通通道（67,72）。 连通通道的压力通过压力引入通道引入内部空间，使得内部空间的压力气氛是吸入压力和泵部的排出压力的中间压力气氛。
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公开(公告)号：JP2004278381A
公开(公告)日：2004-10-07
申请号：JP2003069529
申请日：2003-03-14
Applicant: Toyota Industries Corp , 株式会社豊田自動織機
Inventor： SUZUKI SHIGERU , FUJII TOSHIRO
CPC classification number: F04C2/18 , F04C2/086 , F04C11/001 , F04C15/0038 , F04C2210/20 , F04C2210/201
Abstract: PROBLEM TO BE SOLVED: To provide a gear pump which materializes reduction of liquid leakage between a pump chamber and an inside space. SOLUTION: In a pump part 11 of a two stage gear pump 1, the inside space is formed in a position around a cylindrical surface 29a of a driven shaft 29 and adjacent to gears 32, 33. The inside space 52 communicates with a communicating passage 43 for communication between a discharging side of a first-stage gear train 36 and a inlet side of a second-stage gear train 37 through the medium of a pressure introduction passage 67. The inside space 52 is made to be an intermediate pressure atmosphere between inlet pressure and discharge pressure of the pump part 11 by introducing the pressure from the communicating passage 43 through the pressure introduction passage 67. COPYRIGHT: (C)2005,JPO&NCIPI
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