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公开(公告)号：JP2002266784A
公开(公告)日：2002-09-18
申请号：JP2001066214
申请日：2001-03-09
Applicant: DENSO CORP
Inventor： KUSAYA KATSUHIKO
Abstract: PROBLEM TO BE SOLVED: To deliver the large amount of fuel and prevent pulsation in a pump channel in boosting of the fuel by forming radial outside/inside vane parts in an impeller and outside/inside pump channels in the radial direction of a casing in a turbine type fuel pump. SOLUTION: The m pieces of outside vane parts 56 and outside vane grooves 58 are formed in the outer circumferential part of the impeller and n pieces of inside vane parts 52 and inside vane grooves 54 are formed towards the centripetal part of the outside vane parts. The m pieces of outside vane parts and n pieces of inside vane parts are so combined that a pressure wave of the fuel in the outside pump channel 45 is offset by a pressure wave of the fuel in the inside pump channel 30.
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公开(公告)号：JP2002276580A
公开(公告)日：2002-09-25
申请号：JP2001074462
申请日：2001-03-15
Applicant: DENSO CORP
Inventor： KUSAYA KATSUHIKO
Abstract: PROBLEM TO BE SOLVED: To efficiently transmit the rotation force of an impeller to a fuel smoothly flowing in a blade part and in a blade groove, and mold the impeller easily in a turbine type fuel pump with an impeller rotatably stored in a casing. SOLUTION: The rear surface 48 of each of plural blade parts 46 in the direction of rotation of the impeller 40 stored in a casing 21 to be rotated by a motor 15 has a pair of curved surfaces on both sides curved concavely so that the axially outer part 48a1 of the rear surface 48 is ahead of the axially inner part 48a2 in the rotational direction.
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公开(公告)号：JPH11117889A
公开(公告)日：1999-04-27
申请号：JP28845897
申请日：1997-10-21
Applicant: DENSO CORP
Inventor： MATSUMOTO TATSUYA , KUSAYA KATSUHIKO
Abstract: PROBLEM TO BE SOLVED: To provide a pump device which can have a high discharge rate even in a high discharge pressure range. SOLUTION: An impeller 16 is provided with first and second stages movable vanes 20, 21, concentric therewith, and the casing 17 side is provided with stationary vanes 22 located between the first and second stage movable vanes 20, 21. When the impeller 16 is rotated, fluid sucked into a casing 17 through an inlet port is subjected to energy caused by a pressure and a speed given by the first stage movable vanes 20, and thereafter, the speed energy is converted into a pressure energy by means of the stationary vanes 22. Further, the fluid is subjected to energy caused by a pressure and a speed given by the second stage movable vanes 21, and accordingly, the pressure of the fluid becomes higher. Further, since the movable vanes 20, 21 are spiral so as to be not orthogonal to the rotating direction of the impeller 16, a load torque which is so high is not exerted to the vanes 20, 21 even though the pressure of the fluid becomes higher. Thus, the tendency of lowering the rotational speed of the impeller 16 is restrained, thereby making it possible to endure a high discharge rate.
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公开(公告)号：JP2002357191A
公开(公告)日：2002-12-13
申请号：JP2002027949
申请日：2002-02-05
Applicant: DENSO CORP
Inventor： KUSAYA KATSUHIKO , MORI YUKIO , ITO MOTOYA
Abstract: PROBLEM TO BE SOLVED: To prevent reduction of delivery performance by restricting abrasion at an axial direction end surface of a ring 3c of an impeller 3. SOLUTION: A diameter D1 of the impeller 3 is set to be shorter than an outer diameter D2 of pump flow passages 2b and 4b, and the axial direction end surface 3f of the ring 3c is disposed on the inner side of an axial direction end surface of a blade piece 3a, that is of an axial direction end surface 3g of the impeller 3. Contact slide of the axial direction end surface 3f of the ring 3c corresponding to a blade groove 3b as a most part of the ring 3c of the impeller 3, that is a part where circumferential speed becomes the largest, with axial direction end surfaces of a pump casing 2 and a pump cover 4 is thus eliminated. Slide abrasion at this part in a conventional turbine pump is restricted, and reduction of delivery performance of the turbine pump 1 can be securely prevented.
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公开(公告)号：JP2002202018A
公开(公告)日：2002-07-19
申请号：JP2001026269
申请日：2001-02-02
Applicant: DENSO CORP
Inventor： TAKAGI MASATOSHI , ITO MOTOYA , KUSAYA KATSUHIKO
Abstract: PROBLEM TO BE SOLVED: To reduce sliding resistance (friction loss) of an outer gear to a pump easing of a trochoidal gear type fuel pump and reduce the pulsation of delivery pressure. SOLUTION: Two inner gears 25, 26 are disposed with a partition wall 28 sandwiched between them with eccentricity on the inner peripheral side of the outer gear 24, and the eccentric directions of both inner gears 25, 26 are shifted from each other to the opposite sides by 180 deg.. Thus, the load in the direction of the outside diameter due to fuel pressure rise is applied from two inner gears 25, 26 to one outer gear 24 in the opposite directions by 180 deg. not to be offset load, so that the sliding resistance of the outer gear 24 to the cylindrical easing 21 is reduced. The number of teeth of the outer gear 24 is set to an odd number, and the number of teeth of the inner gears 25, 26 is set to an even number. Thus, the rotational phases of two inner gears 25, 26 are shifted by half pitch, the phases of pulsation wave of delivery output of two inner gears 25, 26 are shifted by half period of the pulsation wave so as to reduce the pulsation of delivery pressure.
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Patent Agency Ranking
公开(公告)号：JP2007270826A
公开(公告)日：2007-10-18
申请号：JP2006333082
申请日：2006-12-11
Applicant: Denso Corp , 株式会社デンソー
Inventor： KUSAYA KATSUHIKO
CPC classification number: H01R39/06 , F04D5/002 , F04D29/0467 , F04D29/047 , H01R2201/26 , H02K5/12 , H02K5/148 , H02K5/1672
Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump preventing poor operation of a motor part by inhibiting electrical short of a brush and a rotary shaft member of an armature.
SOLUTION: The fuel pump is provided with a pump device, a motor device 4 that has a commutator 70 and the armature 42 and a shaft 19, a bearing member 18 rotatably supporting the shaft 19, a brush 27 supplying electricity to the armature 42 by making contact with the commutator 70, and a holder 201 including a partition wall 203 for supporting the bearing member 18 and electrically insulating the bearing member 18 from the brush 27. An end surface 181 on a side of the commutator 70 of the bearing member 18 is on an opposite side of the commutator 70 with respect to an end surface 204 on a side of the commutator 70 of the partition wall 203. Consequently, risk of short of the shaft 19 and the brush 27 can be reduced since axial direction length L2 is added to radial direction length L3 and short route length from the end surface 181 of the bearing member 18 to the brush 27 is extended.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：通过抑制电刷和电枢的旋转轴构件的电短路来提供一种防止电动机部件运转不良的燃料泵。 解决方案：燃料泵设置有泵装置，电动机装置4，其具有换向器70和衔铁42以及轴19，可旋转地支撑轴19的轴承构件18，向 电枢42通过与换向器70接触，以及保持器201，其包括用于支撑轴承构件18并将轴承构件18与电刷27电绝缘的分隔壁203.在该换向器70的一侧的端面181 轴承构件18相对于分隔壁203的换向器70侧的端面204位于换向器70的相反侧。因此，轴19和刷27的短路的风险可以减小，因为轴向 方向长度L2与径向长度L3相加，从轴承部件18的端面181到刷子27的短路径长度延长。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2006170218A
公开(公告)日：2006-06-29
申请号：JP2006061310
申请日：2006-03-07
Applicant: Denso Corp , 株式会社デンソー
Inventor： KUSAYA KATSUHIKO , ITO MOTOYA , TAKAGI MASATOSHI , MARUYAMA KOJI
Abstract: PROBLEM TO BE SOLVED: To improve pump efficiency by preventing travel of an impeller caused by imbalance of pressure inside a pump housing.
SOLUTION: In this impeller 160, an annular part 181 is provided at the outer periphery of a bulkhead to make a blade channel 166 on one side and a blade channel 171 on the other side independent from each other and form a communicating hole 176 for communicating one side with the other side at a position off the blade channel in the radial direction. Since the communicating means is off the blade channel, specifications of the blade channel can be decided independently from specifications of the communicating means to improve pump efficiency. As a result, the impeller capable of preventing travel due to imbalance of pressure and the turbine type fuel pump capable of improving pump efficiency can be realized.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：通过防止由泵壳内的压力不平衡引起的叶轮行程来提高泵的效率。 解决方案：在该叶轮160中，环形部分181设置在隔板的外周，以使一侧的叶片通道166和另一侧上的叶片通道171彼此独立地形成连通孔 176，用于在离开叶片通道的径向方向上的一侧与另一侧连通。 由于通信装置离开叶片通道，所以可以独立于通信装置的规格来决定叶片通道的规格，以提高泵的效率。 因此，可以实现能够防止由于压力不平衡而导致的行驶的叶轮和能够提高泵效率的涡轮式燃料泵。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2003042028A
公开(公告)日：2003-02-13
申请号：JP2001232688
申请日：2001-07-31
Applicant: Denso Corp , 株式会社デンソー
Inventor： IWANARI EIJI , KUSAYA KATSUHIKO , INUZUKA YUKIO , TAKAGI MASATOSHI
Abstract: PROBLEM TO BE SOLVED: To solve the problem that the assembling direction property of a fuel pump is conventionally caused by providing a discharge port around the outermost periphery because of a fuel swirl generated in a motor by the rotation of an armature and the fuel pump is formed to be larger by providing the discharge port at the center because of a larger gap between a brush holder and the armature to reduce pressure loss.
SOLUTION: A rib 27 is provided on the inner face of the brush holder 12 opposed to the downstream end face of the armature for actively guiding swirling fuel guided into the gap to the discharge port 13. Thus, the fuel swirling in the motor 3 can be efficiently discharged from the discharge port 13. Because of the discharge port 13 located at a central portion of the brush holder 12, the assembling directional property of the fuel pump becomes smaller and the degree of freedom in mounting on the vehicle is greater. Since the swirling fuel is guided to the discharge port 13 of the central portion by the rib 27, the gap of smaller size in the axial direction between the armature and the brush holder 12 is required and the smaller and lighter fuel pump is achieved.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题为了解决燃料泵的组装方向特性通常由于通过电枢的旋转而在电动机中产生的燃料涡流而在最外周周围设置排气口的问题，并且燃料泵是 由于电刷架和电枢之间的间隙较大，因此通过将排出口设置在中心而形成为更大，以减小压力损失。 解决方案：在电刷架12的与电枢的下游端面相对的内表面上设置有肋27，用于将引导到间隙中的旋转燃料主动地引导到排出口13.因此，马达3中的燃料旋转可以 由排出口13位于电刷架12的中央部，燃料泵的组装方向性变小，车辆的安装自由度更大。 由于旋转燃料通过肋27被引导到中心部的排出口13，因此需要在电枢和电刷架12之间沿轴向尺寸较小的间隙，并且实现更小和更轻的燃料泵。
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公开(公告)号：JP2009236269A
公开(公告)日：2009-10-15
申请号：JP2008085669
申请日：2008-03-28
Applicant: Denso Corp , 株式会社デンソー
Inventor： KUSAYA KATSUHIKO
Abstract: PROBLEM TO BE SOLVED: To reduce hysteresis of a relief valve due to influence of dynamic pressure. SOLUTION: The upstream side of the valve element 50 of the relief valve other than a portion abutting on a valve seat 42 is formed in a conical shape. Thereby, a change in a direction of a fluid streamline A in the vicinity of the stagnation point of the valve element 50 becomes small in comparison with a spherical valve element. An average flow rate in the vicinity of the stagnation point when the valve is opened is thereby increased to reduce the dynamic pressure. As a result, hysteresis is reduced. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：减轻由于动压的影响而导致的安全阀的滞后。 解决方案：安全阀的阀元件50的上游侧，除了邻接在阀座42上的部分之外，形成为圆锥形状。 由此，与球形阀元件相比，阀元件50的停滞点附近的流体流路A的方向的变化变小。 因此，在打开阀门时停止点附近的平均流量由此增加，以降低动压。 结果，滞后减小。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2003336558A
公开(公告)日：2003-11-28
申请号：JP2002128085
申请日：2002-04-30
Applicant: Denso Corp , 株式会社デンソー
Inventor： ITO YOSHIHIKO , KUSAYA KATSUHIKO , ITO MOTOYA , MORI YUKIO , TAKAGI MASATOSHI , MARUYAMA KOJI , IWANARI EIJI
CPC classification number: F02M37/048 , F02M37/08 , F02M37/10 , F04D5/002 , F04D29/188
Abstract: PROBLEM TO BE SOLVED: To provide a fuel pump having excellent pump efficiency by improving an impeller and/or a fuel pump.
SOLUTION: A circular part 54 or the like is formed on the outer circumference of the impeller 40 or the like to isolate a blade groove 40 or the like on one side from a blade groove 50 or the like on the other side. An improvement such as the zigzag-formation of a blade groove 166 or the like on one side and a blade groove 171 or the like on the other side, the formation of a guide surface 92a in a communication passage 84 in a pump housing 81, and the formation of a communication hole 176 in an impeller 160 is provided.
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：通过改进叶轮和/或燃料泵来提供具有优异的泵效率的燃料泵。 解决方案：在叶轮40等的外周上形成圆形部分54等，以将另一侧的叶片槽50等在一侧与叶片槽50等隔离。 诸如在一侧上的叶片槽166等的锯齿形状和另一侧上的叶片槽171等的改进，在泵壳体81中的连通通道84中形成引导表面92a， 并且提供在叶轮160中形成连通孔176。 版权所有（C）2004，JPO
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