• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The pump comprises a casing in which is disposed a stator armature (4) of an electric motor (2), a rotable shaft (6) to which is fixed a rotor winding (5) and which is torsionally connected to an impeller rotor (12) of the pump and a pair of covers (7,8) which close the ends of the said casing and define between them a chamber (9) within the casing for the fuel; a first end (24) of the rotatable shaft is supported by a first seat (25) formed within a cavity of a sleeve (26) of a first cover (7) projecting axially from the inner surface of the cover itself and the second end (27) of this shaft is supported by a second seat (28) formed in the second cover (8).
    公开号:SU1597115A3
    申请号:SU874355003
    申请日:1987-12-29
    公开日:1990-09-30
    发明作者:Триоло Инноченцо；Тоски Ланфранко；Лоренцони Марчелло
    申请人:Вебер С.Р.Л. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering, namely, fuel pumps, and can be used in fuel pumps for fuel injection systems in an internal combustion engine.
    The aim of the invention is to increase the performance of the pump by increasing its balance
    rotating parts and increased efficiencies.
    FIG. I depicts a pump, longitudinal section; in fig. 2 shows section A-A in FIG. 1;. FIG. 3 - part of FIG. 1, increased scale; Fig, 4 - the end part of the pump, the cut, option
    In FIG. 5 - the same, right side view; in fig. 6 shows section B-B in FIG. four.
    The electric fuel pump includes a housing 1 in which the electric motor 2 and the pump 3 itself are driven, driven by said electric motor 2. The electric motor 2 comprises a stator 4 with the housing 5, a rotor 6 mounted on a rotating shaft 7 and having a winding 8.
    The pump also contains two covers 9 and 10 for closing the ends of the housing 1 on the suction and discharge sides, respectively. The covers 9 and 10 are connected to the stator 4 case 5 with the formation of the internal fuel chamber 11 by means of the case 1. Actually the pump 3 is installed in the case 5 and mainly consists of a pump rotor 12 placed in the pump cavity 13 formed by a dusk 14. an annular spacer 15 and the inner flat surface 16 of the cover 9, fastened together with a group of screws 17. The inner surface 16 of the cover 9 is parallel to the corresponding surface 18 of the disk 14 and together they are perpendicular to the longitudinal axis of the pump. Between the above-mentioned surfaces 16 and 18 there is a pump rotor 12, which has an annular shape with several radial grooves 19, in each of which a corresponding roller 20 is installed. The rollers 20 can interact with the inner surface of 2G space 15. The shape and arrangement of the recesses 19 of rollers 20 and the surfaces 21 are chosen so as to form between the rotor 12 of the pump and the spacer 15 a cavity having a form suitable for ensuring, in a known manner (during the rotation of the pump rotor), the suction of the fuel through the slot 22, you Full in the cover 9, and feeding it through the opening 23 in the disk 14. One end 24 of the rotating shaft 7 rests on the spherical surface 25 in the lid 10 through the corresponding surface into the contour 26. Part of the spherical surface 25 is formed in the container 10 itself, and a friend is formed with a ring 27 attached to the cover. In an embodiment, the end 24 of the rotating wrap 7 may be mated with the key 10 through a small sleeve 28 connected to the lid 10
    with the help of several spokes 29 and having an internal supporting prismatic surface formed by several glossy surfaces 30.
    The other end 31 of the rotating wrap 7, closest to the lid 9, has a spherical face section 32 and rests on the latter through a mating unit, which consists of a finger 33, one end of which is rigidly fixed in the corresponding hole in the lid 9, and the other end protrudes axially The pressure from the inner surface 16 is made in the form of a sleeve 34, having an inner axial cavity 35 with a conical end portion 36 for mating with a spherical end portion 32 of a rotating vape 7, and an outer surface 37 for coupling along a sliding seat e with an intermediate sleeve 38.
    To bring the rotor of the pump 12 into rotation, the latter is connected with the rotor 6 of the electric motor 2. This connection is made in the form of an intermediate sleeve 38, which, on the one hand, is rigidly connected with the pump rotor 12, on the other hand, has end teeth 39, capable of enter the corresponding hollows made in the rotor 6 of the electric motor.
    The axial length of the intermediate sleeve 38 is chosen such that the end teeth 39 made thereon are located predominantly in a plane perpendicular to the pump axis and located from the rotor winding 8 of the electric motor at a distance less than the distance from the rotor winding to the plane in which there is a conical end surface 36 of the axial cavity 35 of the protruding end of the finger 33.
    The internal axial cavity 35, in which the end 31 of the shaft 7 is located, communicates, on the one hand, with the pump suction side through the axial bore 40 in the finger, passing through the cover 9 and controlled by the shut-off element 41, usually held in the closed position by means of a spring 42. On the other hand, the axial cavity 35 communicates with the fuel chamber 1 1 through the axial 43 and the radial 44 can; 1l, made at the end 31 of the wapa 7; Thus, the shut-off element 41 and its associated parts form a pressure reducing valve for the Toplia; ), keep the HOS in cell II,
    Perpendicular to the axis of the pump, the average flakes are 1% and. the stator 4 of the winding 8 of the rotor of the electric motor are respectively spaced apart from each other to form an axial electromagnetic force on the winding 8 in the direction of pressing the spherical face. . section 32 of the end 3 of the shaft 7 and the conical end of the inner surface 36 of the axial cavity 35.
    The motor 2 comprises a collector 44, also mounted on a rotating shaft 7 and in contact with brushes (not shown in the drawings), to which current is supplied through terminals 45 secured in openings in the cover 10.
    The pump also contains a check valve 47 installed in the discharge channel 46, having a closing element 48, pressed against the corresponding seat in the discharge channel by means of a coil spring 49. The channel 46 is formed in a nipple 50 projecting axially outward from the edge 10, and part of the channel can be made in two sleeves 51 ..
    The housing 1 rests on the outer surface of the stator housing 4, the ends of which rest on the end covers 9 and 10. The housing 1 has a front stopper 52 against which the cover 9 rests, and the rear edge 53 of the housing is bent on the cover 10 by plastic deformation “1 and the casing has sealing rings 54.
    The pump works as follows.
    When the winding 8 of the rotor 6 of the electric motor 2 is rotated through the intermediate sleeve 38, the rotation is transmitted to the pump rotor 12, as a result of which the fuel is sucked through the slot 22 and is fed under pressure into the fuel chamber 11, from where it enters the consumer through the discharge channel 46. Fuel under pressure in the chamber 11 also fills the bore 40, the axial and radial channels 43, made in the finger 33 and at the end 31 of the shaft 7, therefore, whenever the fuel pressure exceeds a predetermined value depending on the preload on the spring 42, element 41 moves away from its saddle, allowing fuel to flow back to the suction side of the pump.
    During periods when the pump is idle, the pipeline located downstream of the nipple 50 is not emptied due to the presence of a j 47 check valve, which, without pressure, closes the discharge channel 46. The spherical end portion 32 of the shaft surface 7 is constantly kept in contact with the corresponding the end surface 36, both with the power off of the electric motor 2, and during its rotation, since the force with which the stator 4 acts on the winding 8 of the rotor 6,
    5 tends to move it toward the suction side. This is ensured by the fact that the mentioned mean planes of P. and P are not compatible with each other, but are different from the provision of an interval between them of a given magnitude. This ensures a strictly defined axial position of the rotating shaft 7 and, therefore, fixed on
    5, windings 8 with respect to other parts of the pump and, in particular, with respect to the rotor of the pump 12. In addition, this state of adhesion between the above sections 32 and 36 is preserved for any wear of the surfaces that
    0 avoids unwanted axial play.
    The interface between the spherical section 32 and the corner section 36 provides a mixed type support capable of carrying both radial and axial loads and, therefore, no radial loads acting on the end 31 of the shaft 7 can be perceived by this interface, but also
    0 axial loads, create 1e the mentioned electromagnetic force. This mate. E is a cad5 support that is necessary for perceiving both radial and axial loads, even if the axis of the shaft 7 forms a small angle relative to the longitudinal axis of the pump and, in particular, relative to the intermediate sleeve 38. Therefore
    50 can be offset by small
    4 errors of assembly and processing, in addition, various parts of the pump, in particular the cover 9, can be made with greater latitude and tolerances. Even
    权利要求:
    Claims (2)
    [1]
    55 if the rotating shaft 7 is mounted so that its axis forms a small angle with the longitudinal axis of the pump, it will still work correctly. 159 In this case, the support of the first end 24 of the rotating shaft 7 in the form of a buckle 26 with a spherical outer surface adjacent to the corresponding spherical surface 25 in the lid 10 makes it possible to obtain a perfectly balanced position of the shaft 7j in which both its ends have the ability to rotate and Traces can be compensated for by significant assembly errors or wide manufacturing tolerances can be used. In the variant shown in the fng. 1, the end 24 of the shaft 7 is able to both rotate relative to the lid 10, since the liner 26 can rotate in the seat made of it in the cap 10, so move in the axial direction relative to it. In addition, this arrangement of the pump rotor 12 improves the efficiency of the own pump, since it provides more accurate parallelism between the spring surfaces fli of the pump rotor 2 and the inner surfaces of the cover 9 and the disk 14 that are coupled with the mm. with the axes of the cover 9 and the disk, since the rotor is centered on the sleeve 34, which is in turn, it is precisely coaxial with the lid 9 by fixing it by means of a finger 33 which can be mounted on the lid 9 strictly perpendicular to its inner surface and exactly coaxial with it. Consequently, fuel leakage losses between the mating surfaces of the rotor 12, the cover 9 and the disk 14 are extremely small. Execution; The windings 8 of the rotor 12, together with the rotating shaft 7, allow for a more accurate ball} they can be mounted directly on the balancing machine. Thus, such an implementation of the pump allows to improve its performance. Claim 1, An electric fuel pump comprising a housing in which a stator of an electric motor is placed, a rotor of an electric motor with a winding mounted on a rotating shaft, a pump rotor and two covers mounted on the suction and discharge sides on the ends of the housing to form between them in the housing of the fuel chamber and fastened to the stator by means of a housing, the rotor of the electric motor being mounted in the housing with the support of one end of the rotating shaft onto the bearing surface in the first cap. through the insert, which The outer spherical surface mating with the corresponding spherical section in the lid and with the other end of the rotating shaft is supported on the second lid through the joint, while it is attached to the second lid. annular spacer and plate that form the rotor cavity of the pump connected to the rotor of the electric motor with the possibility of moving the fuel in the chamber in the axial direction and installed on the outer cylindrical surface of the protruding end of the finger fixed in the second cover-e | coaxially with the rotating shaft of the electric motor, characterized in that, in order to improve performance, the interface of the other end of the rotating shaft of the electric motor with the second cover is made in the form of an axial cavity with a conical friction surface at the protruding end of the finger and a spherical outer surface on the other end of the rotating shaft, located inside the axial cavity adjacent to its conical surface,
    [2]
    2. A pump according to claim 1, characterized in that the axial hollow of the finger is communicated on one side with the fuel chamber through the axial and radial channels in the other, the rotary wap, and on the other side with the suction side of the pump through the passage channel in the second lid, in which a spring-loaded bypass valve is installed. 3, Pump on PP. 1-2, in connection with the fact that the connection of the rotor of the pump to the rotor of the electric motor is made in the form of an intermediate sleeve with end teeth and teeth on the end of the rotor of the electric motor, coupled with the end teeth of the intermediate sleeve J, which is installed coaxially with the pump rotor, rigidly connected to the 1IM, protrudes axially on it and has an inner surface resting on the outer surface 9159711
    ness of the protruding end of the finger fixed in the second lid.
    4. The pump according to claim 3, is also distinguished by the fact that the intermediate sleeve is planted in the hole in the rotor of the pump and its length is chosen such that the end teeth made on it are located mainly in the plane,
    perpendicular to the axis, the pump is located -. 1Day from the rotor winding of an electric motor at a distance less than the distance from the rotor winding to the dartboard, in which the conical surface of the axial cavity is located
    20
    nineteen
    nineteen
    510
    the end of the finger fixed in the second cover
    I
    5. Pump on PP. 1-4, distinguished by the fact that the middle plate, the stator, perpendicular to the pump axis, and the middle plane of the rotor winding are separated from each other to form an axial electromagnetic force on the rotor winding in the direction of pressing the spherical surface section of the other end of the rotating shaft to the conical inner surface of the axial cavity.
    17
    17 J 7 J // T W "f / /.../././.,././, ../J / J.I .. .-. . y444V4N 44XV XN.Y4X k4Ky Nj4444 t4Mv4X O 4.vVV4v4N 4 X 4 NFSS - - r 2E2 2332ESS2 "2 223S 222SS222z322z2z2z2z: rf-t, f / Eai№ r i 7 iri nivii i, i, i, ii, x2zz2z22: rf-t, f / E i r r i 7 iri ni ni, i, i, i 2 2 z 2 z 22
    / 2
    16 8
    S
    % g.1
    31 SG
    ten
    FIG. five
    29
    28
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1597115A3|1990-09-30|Electric fuel pump
    US5122039A|1992-06-16|Electric-motor fuel pump
    US4500270A|1985-02-19|Gear rotor fuel pump
    US5219277A|1993-06-15|Electric-motor fuel pump
    US8443772B2|2013-05-21|Electric valve timing control device of internal combustion engine
    US4445820A|1984-05-01|Electrically powered pump
    US3801231A|1974-04-02|Pump and electric drive motor unit
    US4593222A|1986-06-03|Electric control motor
    US5680700A|1997-10-28|Regenerative fuel pump
    US4784587A|1988-11-15|Pump apparatus
    GB2158155A|1985-11-06|Rotary liquid pump
    GB2093531A|1982-09-02|Electric fuel pump
    CA1164269A|1984-03-27|Self-contained rotary fuel pump
    JP4112468B2|2008-07-02|Axis of rotation
    US4201521A|1980-05-06|Pump and motor assembly
    US4662827A|1987-05-05|Wet motor geroter fuel pump
    SE449124B|1987-04-06|ELECTRICALLY DRIVEN FUEL PUMP FOR USE IN THE FUEL INJECTION SYSTEM FOR A SPARK TURN COMBUSTION ENGINE
    US4573882A|1986-03-04|Electrically operated fuel pump apparatus
    US4645430A|1987-02-24|Wet motor gerotor fuel pump with self-aligning bearing
    US5006048A|1991-04-09|Electrically-operated gear rotor pump
    JP2011256798A|2011-12-22|Variable valve system for internal combustion engine
    US4580951A|1986-04-08|Wet motor fuel pump with fuel flow through the bearing for cooling thereof
    GB2253015A|1992-08-26|Butting ring for a rotor shaft
    JP5719008B2|2015-05-13|Variable valve operating device for internal combustion engine
    US4492515A|1985-01-08|Pump apparatus
    同族专利:
    公开号 | 公开日
    EP0273386A2|1988-07-06|
    EP0273386A3|1989-10-04|
    IT8667981D0|1986-12-30|
    IT1196885B|1988-11-25|
    US4834623A|1989-05-30|
    BR8707159A|1988-08-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2312514A|1938-11-03|1943-03-02|Kingston Products Corp|Pump|
    US2885962A|1956-03-08|1959-05-12|Borg Warner|Fuel pump|
    GB834689A|1957-06-03|1960-05-11|Lucas Industries Ltd|Rotary fuel pumps|
    US3238883A|1964-03-09|1966-03-08|Micro Pump Corp|Magnetic drive gear pump|
    US3418991A|1967-06-12|1968-12-31|Gen Motors Corp|Vehicle fuel system|
    DE2159025C2|1971-11-29|1982-12-30|Robert Bosch Gmbh, 7000 Stuttgart|Fuel delivery unit, consisting of a side channel pump and an electric motor|
    DE2303687A1|1973-01-26|1974-08-08|Bosch Gmbh Robert|CONVEYOR UNIT FOR LIQUIDS|
    DE2619062C2|1976-05-03|1987-02-12|Robert Bosch Gmbh, 7000 Stuttgart, De|
    DE2637980A1|1976-08-24|1978-03-02|Bosch Gmbh Robert|FUEL SUPPLY UNIT|
    DE2832352A1|1978-07-22|1980-01-31|Bosch Gmbh Robert|Electric fuel pump unit - has rotary pump removably secured in common housing of motor and coupled to motor rotor via dog clutch|
    DE2906224A1|1979-02-17|1980-09-04|Bosch Gmbh Robert|FUEL SUPPLY UNIT|
    US4401416A|1980-02-19|1983-08-30|Walbro Corporation|Self-contained rotary fuel pump|
    US4447192A|1980-02-19|1984-05-08|Walbro Corporation|Self-contained rotary fuel pump|
    IT1133295B|1980-05-08|1986-07-09|Weber Spa|ELECTRICALLY OPERATED FUEL PUMP, SUITABLE FOR USE IN INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES WITH COMMAND IGNITION|
    DE3114871A1|1981-04-13|1982-11-11|Schwäbische Hüttenwerke GmbH, 7080 Aalen|Gear pump|
    DE3130288A1|1981-07-31|1983-02-17|Robert Bosch Gmbh, 7000 Stuttgart|Fuel delivery unit having a pump rotor revolving in a pump chamber|
    US4573882A|1982-05-17|1986-03-04|Nippondenso Co., Ltd.|Electrically operated fuel pump apparatus|
    JPS60187790A|1984-03-08|1985-09-25|Mitsubishi Electric Corp|Pressure difference oil supplying device for rolling piston type compressor|
    JPS6111483A|1984-06-27|1986-01-18|Honda Motor Co Ltd|Pump apparatus|
    IT1184924B|1985-03-22|1987-10-28|Weber Spa|ELECTRICALLY OPERATED FUEL PUMP|JPH02196188A|1989-01-23|1990-08-02|Hitachi Ltd|Rotary compressor|
    US4978282A|1989-09-18|1990-12-18|Industrial Technology Research Institute|Electrical fuel pump for small motorcycle engine|
    US5137437A|1990-01-08|1992-08-11|Hitachi, Ltd.|Scroll compressor with improved bearing|
    DE4120665A1|1991-06-22|1992-12-24|Teves Gmbh Alfred|ELECTRICALLY DRIVEN HYDRAULIC PUMP|
    US5173037A|1991-12-09|1992-12-22|General Motors Corporation|Automotive fuel pump|
    DE4430909A1|1994-08-31|1996-03-07|Bosch Gmbh Robert|Unit consisting of drive motor and radial piston pump|
    US5697769A|1995-09-25|1997-12-16|Walbro Corporation|Fuel pump outlet assembly|
    JP3812737B2|2001-07-31|2006-08-23|株式会社デンソー|Fuel pump|
    US6536242B1|2001-11-27|2003-03-25|General Electric Company|Pressure relief drain pump assembly for appliance|
    US7118354B2|2001-12-15|2006-10-10|Fe Petro, Inc.|System and method for improving petroleum dispensing station dispensing flow rates and dispensing capacity|
    US6579077B1|2001-12-27|2003-06-17|Emerson Electric Company|Deep well submersible pump|
    US20050192519A1|2004-02-27|2005-09-01|John Crunick|Motor assemblies and massage assemblies using the same|
    AT501235B1|2004-11-23|2006-12-15|Hoerbiger Automatisierungstech|HYDRAULIC COMBINATION UNIT|
    DE102005056860A1|2005-11-29|2007-05-31|GM Global Technology Operations, Inc., Detroit|Fuel tank made of synthetic material for motor vehicles e.g. for passenger vehicles, has opening and swirl pot which is arranged in interior of container whereby edge of opening is firmly connected with edge of swirl pot|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT67981/86A|IT1196885B|1986-12-30|1986-12-30|ELECTRIC FUEL PUMP|
    [返回顶部]