WO2013047027A1 - Pompe - Google Patents

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Publication number
WO2013047027A1
WO2013047027A1 PCT/JP2012/071301 JP2012071301W WO2013047027A1 WO 2013047027 A1 WO2013047027 A1 WO 2013047027A1 JP 2012071301 W JP2012071301 W JP 2012071301W WO 2013047027 A1 WO2013047027 A1 WO 2013047027A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic pole
peripheral surface
rotor
outer peripheral
stator
Prior art date
Application number
PCT/JP2012/071301
Other languages
English (en)
Japanese (ja)
Inventor
恒二 黒木
平田　真宏
孝文 関
祐樹 近澤
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2013047027A1 publication Critical patent/WO2013047027A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can

Definitions

  • the present invention relates to a pump.
  • pumps that include a motor as a drive source, an impeller that is rotationally driven by the motor, and a pump case and a separation plate that form a pump chamber.
  • This type of pump is divided into a pump chamber in which a fluid flows and a motor unit isolated from the fluid by a separation plate.
  • An outer shell of the pump chamber is formed by a pump case, and an impeller and a motor rotor are arranged inside.
  • the motor unit has a motor stator disposed therein and is filled with mold resin. The mold resin fixes the stator to the separation plate and forms an outer shell on the motor unit side.
  • a cylindrical taper disposed between the rotor and the stator of the separation plate is provided with a drawing taper for releasing the separation plate. And by providing this punching taper, a clearance (clearance) is produced between the stator and the cylindrical portion. Therefore, in the case where the outer shell of the motor unit is formed of a mold resin, the stator is easily moved within the clearance by the pressure (injection pressure) at the time of molding. When the stator moves, the axis of the stator tilts, shifts in the center of the stator, and the like, and it becomes difficult to stabilize the balance of electromagnetic force or to vary performance.
  • a rib is provided on the outer peripheral surface of the cylindrical portion over substantially the entire axial length of the cylindrical portion.
  • a brushless motor as a driving source of such a pump includes, for example, a T-shaped tooth portion formed in a tooth portion as shown in Japanese Patent Publication No. 09-285044 (hereinafter referred to as Document 2). Some of the upper and lower surfaces are provided with converging pieces bent into an L shape in a side view. In this motor, the magnetic flux guided from the rotor (rotor magnet) is collected by the converging piece, and the collected magnetic flux is joined to the T-shaped tooth portion.
  • a motor as shown in Document 2 is used as a pump drive source as shown in Document 1, and the protrusion is brought into contact with the stator inner peripheral surface (the inner peripheral surface of the T-shaped tooth portion) and the converging piece.
  • the radial distance (gap) between the stator and the rotor is likely to increase.
  • a protrusion is contact
  • the converging piece creates or leaves a gap at the contact site, the gap between the converging piece and the rotor becomes non-uniform, and the balance of electromagnetic force becomes unstable or the pump performance varies.
  • a pump in which an increase in gap due to the auxiliary magnetic pole portion is suppressed, and the axial inclination and axial misalignment of the stator and the deformation of the auxiliary magnetic pole portion due to the injection pressure during molding are suppressed. That was the issue.
  • the pump according to the first aspect of the present invention includes a motor, an impeller that is rotated by the motor to flow a fluid, and a pump case and a separation plate that form a pump chamber that houses the impeller.
  • the motor includes a stator and a rotor that is rotationally driven by the stator and rotates the impeller, and the rotor has an outer peripheral surface along a rotation direction, and the stator has a magnetic pole portion facing the outer peripheral surface.
  • An auxiliary magnetic pole portion protruding in the axial direction from the magnetic pole portion is provided at both ends of the magnetic pole portion in the axial direction with respect to the rotation axis of the rotor, and the separator plate is a positive electrode between the rotor and the stator.
  • a cylindrical portion interposed between the magnetic pole portion and the magnetic pole portion facing the magnetic pole portion of the cylindrical portion is provided with a protruding portion that contacts only the magnetic pole portion of the magnetic pole portion and the auxiliary magnetic pole portion.
  • the inner peripheral surface of the auxiliary magnetic pole portion is offset from the inner peripheral surface of the magnetic pole portion in the radially outward direction.
  • a third form of the present invention in the second form, has a plurality of magnets in which the rotor is arranged in the circumferential direction, and on a circumference passing through a location facing the magnetic pole portion of the outer peripheral surface of the magnet.
  • a groove portion having the same dimension as that of the magnetic pole portion in the axial direction and having a width in the axial direction and recessed in the radially inward direction is provided.
  • the cylindrical portion has a release taper on the outer peripheral surface of the cylinder, and the protruding portion has a radially outward direction.
  • the facing outer surface has a smaller taper than the hollow taper of the cylindrical outer peripheral surface.
  • the separation plate includes a bottom portion at one end of a cylindrical portion, and the end portion on the bottom portion side of the projection portion An inclined surface having a gradient toward the bottom is provided.
  • FIG. 2 is an enlarged view of a part of FIG. 1. It is explanatory drawing of an offset dimension. It is a perspective view of the modification of a separation plate.
  • the pump 1 includes a motor 17 that is a drive source, an impeller 16 that is driven by the motor 17, and a control unit 15 that controls the rotational drive of the motor 17. .
  • the pump 1 is partitioned into a pump chamber 11 that allows fluid such as air and water to flow, and a motor unit 12 that is isolated from the fluid in the pump chamber 11.
  • the motor unit 12 includes a part of components of the motor 17 (details will be described later) and a control unit 15 and is molded with a mold resin to form an outer shell.
  • the mold resin is a thermosetting resin having electrical insulation, and the mold part 12a is configured by curing the thermosetting resin. If the mold resin has a higher thermal conductivity than air, the heat generated in the motor unit 12 is transmitted to the outside of the motor unit 12 such as outside air or fluid in the pump chamber 11 and released. It is preferable because it can also serve as a heat dissipating means.
  • the pump chamber 11 is mainly composed of a separation plate 2 that partitions the pump chamber 11 and the motor unit 12 and a pump case 13 that forms an outer shell of the pump 1 on the pump chamber 11 side. And the pump chamber 11 has a space inside, and the impeller 16 is arrange
  • the pump case 13 is mainly composed of a cylindrical side wall and a substantially circular top surface portion covering one end of the side wall cylinder.
  • a suction portion 14 for sucking fluid into the pump chamber 11 is provided at the approximate center of the top surface portion, and a discharge portion (not shown) for discharging the fluid in the pump chamber 11 to the outside is provided on the side wall. It is provided.
  • the impeller 16 is mainly composed of a disk-shaped shroud in plan view, and the shroud is provided with blades for flowing fluid.
  • the impeller 16 is rotated along the circumferential direction of the shroud by the rotational drive of the motor 17.
  • the impeller 16 sucks fluid into the pump chamber 11 through the suction portion 14 and applies centrifugal force to the fluid in the pump chamber 11 and discharges the fluid outside the pump chamber 11 through the discharge portion. Therefore, the pump 1 of the present embodiment is a so-called spiral pump that uses the motor 17 as a drive source and causes the fluid to flow in the radially outward direction from the rotation center side by the rotation of the impeller 16.
  • the separation plate 2 is provided to extend radially outward from a cylindrical portion 21, a bottom portion 22 that closes one end portion of the cylindrical portion 21, and an opening-side end portion of the cylindrical portion 21.
  • the flange portion 23 is formed. As shown in FIG. 1, the flange portion 23 has an annular shape in plan view, and has a surface facing the top surface portion, and the impeller 16 is rotatably disposed therebetween.
  • the cylindrical portion 21 has the inner peripheral side of the cylinder inside the pump chamber 11 and the outer peripheral side becomes the motor portion 12.
  • the cylindrical portion 21 protects the conductive member of the motor 17 and the control portion 15 from inside the pump chamber 11 (fluid).
  • the bottom 22 has a circular plate shape when viewed in the axial direction Ax, and a support shaft 3 (details will be described later) is attached to the approximate center of the circle.
  • the motor 17 is composed mainly of a rotor 4, a stator 5, and a support shaft 3.
  • the rotor 4 and the support shaft 3 are disposed on the inner peripheral side (in the pump chamber 11) of the cylindrical portion 21, and the stator 5 serves as the conductive member of the motor 17 on the outer peripheral side (motor portion 12). Placed in.
  • the rotor 4 is formed in a substantially cylindrical shape, and a shroud is provided substantially concentrically and integrally at one end in the axial direction Ax.
  • the rotor 4 includes a plurality of magnets 41.
  • the plurality of magnets 41 are arranged side by side in the circumferential direction and form a cylindrical outer peripheral surface 4a of the rotor 4.
  • the support shaft 3 is disposed substantially concentrically on the inner peripheral side of the rotor 4, and the rotor 4 is rotationally driven by the stator 5 with the support shaft 3 as a rotation center.
  • the support shaft 3 is rotatable around an axis and has a bearing 31 attached thereto, and the rotor 4 is supported via the bearing 31 so as to be rotatable around the axis.
  • the support shaft 3 has one end portion in the axial direction Ax fixed to the first mounting portion 13 a provided in the pump case 13 and the other end portion provided in the second portion 22 a provided in the bottom portion 22. Fixed to.
  • the axial direction Ax of the rotor 4 is simply referred to as the axial direction Ax and is used as a direction reference.
  • the stator 5 includes a core 51 formed of a magnetic metal material, a coil 52 in which a conducting wire is wound around the core 51, and an insulating portion 53 that electrically insulates the core 51 and the coil 52 from each other. .
  • the core 51 includes an annular portion 61 disposed substantially concentrically with the rotor 4, teeth 62 projecting radially inward (rotor 4 side) from the inner peripheral surface of the annular portion 61, and end portions of the teeth 62 on the rotor 4 side.
  • the main body is composed of the magnetic pole portion 63 formed in the above.
  • the core 51 is formed by laminating a plate-like member (first plate-like member 8a) that integrally forms the annular portion 61, the teeth 62, and the magnetic pole portion 63 in the axial direction Ax.
  • the teeth 62 protrude from the annular portion 61 in the radially inward direction and are formed in a prismatic shape, and are so-called radially arranged in substantially equal intervals in the circumferential direction, and a plurality (six in this embodiment) are provided in the annular portion 61. It is.
  • copper wires are wound around the side surfaces of the prisms along the protruding direction (inward radial direction) via the insulating portions 53, and the coils 52 are formed outside the prisms.
  • the teeth 62 protrude from the coil 52 in the radially inward direction, which is the end on the rotor 4 side, and the protruding tip serves as a magnetic pole part 63.
  • the magnetic pole part 63 is longer in the circumferential direction than the teeth 62 and has an arc shape when viewed in the axial direction Ax.
  • the arc is substantially concentric with the rotor 4 and the inner circumferential surface 63a of the arc has a diameter. It faces the outer peripheral surface 4a of the rotor 4 via the cylindrical portion 21 in the inward direction.
  • the magnetic pole part 63 is the dimension (same dimension) as the dimension in the axial direction Ax of the annular part 61 and the teeth 62 in the axial direction Ax.
  • the magnetic pole part 63 is provided with auxiliary magnetic pole parts 7 at both ends in the axial direction Ax.
  • the auxiliary magnetic pole portion 7 is mainly composed of an auxiliary magnetic pole piece 71 provided to extend from the end portion in the axial direction Ax of the magnetic pole portion 63 in a direction away from the magnetic pole portion 63 along the axial direction Ax.
  • the auxiliary magnetic pole piece 71 has an arc shape substantially concentric with the magnetic pole part 63 when viewed in the axial direction Ax, and is arranged on the radially inner side (the rotor 4 side) from the portion where the coil 52 of the stator 5 is provided.
  • the auxiliary magnetic pole piece 71 has an arcuate inner peripheral surface 71 a offset from the inner peripheral surface 63 a of the magnetic pole part 63 in the radially outward direction and faces the outer peripheral surface 4 a of the rotor 4.
  • the inner peripheral surface 63a of the magnetic pole portion 63 and the inner peripheral surface 71a of the auxiliary magnetic pole portion 7 are the magnetic pole surface 5a of the stator 5, and the stator 5 suppresses the dimension of the magnetic pole portion 63 in the axial direction Ax, and The magnetic pole surface 5a directly facing is widened.
  • the auxiliary magnetic pole piece 71 is formed by laminating arc-shaped plate members (second plate members 8b) in the axial direction Ax.
  • Each of the auxiliary magnetic pole pieces 71 has an end on the magnetic pole part 63 side in the axial direction Ax (a plate surface of the second plate-like member 8b) as an end in the axial direction Ax of the magnetic pole part 63 (of the first plate-like member 8a). (The plate surface) is attached to the end of the magnetic pole part 63.
  • the auxiliary magnetic pole piece 71 includes a first magnetic pole piece 72a provided at one end (flange 23 side) in the axial direction Ax of the magnetic pole part 63, and an end (on the opposite side of the magnetic pole part 63 in the axial direction Ax ( A distinction is made between the second magnetic pole piece 72b provided on the bottom 22 side).
  • the insulating portion 53 covers the outer surface of the core 51 and the outer peripheral surface of the auxiliary magnetic pole portion 7, and insulates the core 51 and the auxiliary magnetic pole portion 7 from the coil 52.
  • the insulating portion 53 includes an outer peripheral surface of the magnetic pole portion 63, an outer surface around which the winding of the tooth 62 is wound, a part of the outer peripheral surface and an inner peripheral surface of the annular portion 61, and an end surface in the axial direction Ax.
  • the outer peripheral surface of the auxiliary magnetic pole part 7 and the surface of the extended tip are covered. Therefore, the insulating part 53 insulates the core 51 and the auxiliary magnetic pole part 7 from the conducting wire wound around the teeth 62.
  • the insulation part 53 has the 1st leg part 53a which protruded to the flange part 23 side in the axial direction Ax in the site
  • the stator 5 is positioned in the motor portion 12 in the axial direction Ax by abutting the protruding tip of the first leg portion 53a with the flange portion 23.
  • the insulating portion 53 has a second leg portion 53b that protrudes in the opposite direction to the first leg portion 53a at a portion that covers the end face on the opposite side of the annular portion 61.
  • the second leg portion 53b defines the position of the control unit 15 in the axial direction Ax through the terminal pin 53c attached, and is electrically connected to the control unit 15 and the coil 52.
  • the portion of the insulating portion 53 that covers the auxiliary magnetic pole portion 7 has a rising portion 54a that covers the outer peripheral surface of the auxiliary magnetic pole portion 7 from the outer peripheral side, and a diameter that covers the extended tip of the auxiliary magnetic pole portion 7 in the axial direction Ax in the axial direction Ax.
  • the inner projecting piece 54b constitutes a main body.
  • the rising portion 54a rises in the direction away from the tooth 62 along the axial direction Ax, and the radially protruding piece 54b is formed to protrude radially inward from the leading end of the rising portion 54a in the axial direction Ax.
  • the insulating portion 53 is the rising portion 54a and the in-diameter protruding piece 54b, and the pressure at the time of forming the coil 52 (at the time of winding) or molding is directly applied to the outer peripheral surface of the auxiliary magnetic pole portion 7 or the extended tip.
  • the auxiliary magnetic pole part 7 is protected by making it difficult to apply. Therefore, the auxiliary magnetic pole portion 7 is prevented from being deformed in the radially inward direction or the axial direction Ax when the coil 52 is formed (when the winding is wound) or during molding.
  • the separation plate 2 in the present embodiment is a resin molded product formed by resin molding. As shown in FIG. 3, the separation plate 2 is removed (released) from the mold during resin molding. A draft taper (see T1 in the figure) is provided in the cylindrical portion 21.
  • the draft taper is, for example, about 0.5 to 1.0 ° with respect to the axial direction Ax. Therefore, the separation plate 2 has a taper, and the outer diameter of the cylindrical portion 21 is such that the outer diameter of the cylindrical portion 21 is the largest at the end portion on the flange portion 23 side and decreases toward the bottom portion 22 side (cylindrical outer peripheral surface 21a). Is inclined.
  • the cylindrical outer peripheral surface 21 a has a plurality of protrusions 24 from the end on the flange portion 23 side to the end on the bottom portion 22 side (in this embodiment, the same number of six magnetic pole portions 63 as the number of protrusions 24).
  • the protrusions 24 are arranged in the circumferential direction at substantially equal intervals.
  • the protruding portion 24 has substantially the same taper as the drawing taper, and is formed to protrude radially outward from the cylindrical outer peripheral surface 21a.
  • the protruding portion 24 has a protruding amount in the radially outward direction from the cylindrical outer peripheral surface 21a that increases toward the bottom portion 22, and the outer surface facing the radially outward direction is positioned substantially parallel to the axial direction Ax.
  • the protrusion 24 is located between the magnetic pole parts 63 arranged in the circumferential direction, and the end of the magnetic pole part 63 in the circumferential direction is in contact with the side surface of the protrusion 24 facing the circumferential direction. The Therefore, the protrusion 24 defines the position of the magnetic pole part 63 in the circumferential direction, and suppresses the movement of the magnetic pole part 63 (core 51) in the circumferential direction during molding or the like.
  • the cylindrical outer peripheral surface 21a is provided with a protruding portion 25 protruding in the radially outward direction at the approximate center between the protruding portion 24 in the circumferential direction.
  • a plurality of the protrusions 25 are formed at substantially equal intervals in the circumferential direction (the same number as the magnetic pole parts 63), and are rectangular in plan view when viewed in the radial direction along the protruding direction.
  • the protruding portion 25 faces the magnetic pole portion 63 and is positioned at substantially the same height as the magnetic pole portion 63 in the axial direction Ax. Furthermore, since the protrusion part 25 is located in the approximate center between the protrusion parts 24, it is located in a line with the teeth 62 which form the magnetic pole part 63 which opposes in a radial direction.
  • the protrusion 25 is in contact with the magnetic pole part 63 at the approximate center of the arc of the magnetic pole part 63 and is not in contact with the auxiliary magnetic pole part 7.
  • the protrusion 25 abuts only on the magnetic pole portion 63, thereby positioning the core 51 (stator 5) in the radial direction when the stator 5 is attached to the separation plate 2, and in the radially inward direction of the core 51 during molding. Suppresses movement.
  • the protrusion 25 has a taper of an outer surface 25a (contact surface with the magnetic pole 63) facing in the radially outward direction is smaller than the draft taper, for example, about 0.2 ° with respect to the axial direction Ax (in FIG. 3). T2).
  • the outer surface 25a is continuous with the cylindrical outer peripheral surface 21a on the flange portion 23 side, and the outer surface 25a has a shape having no step at the boundary in the axial direction Ax between the end on the flange portion 23 side and the cylindrical outer peripheral surface 21a. The shape has no facing end face).
  • the projection 25 has an end surface (step with the cylindrical outer peripheral surface 21a) on the bottom 22 side, and this end surface is an inclined surface 25b having a gradient that approaches the radially inward direction toward the bottom 22 side.
  • the rotor 4 is provided with a groove portion 42 recessed in the radially inward direction on the outer peripheral surface 4a formed mainly by the magnet 41, and the groove portion 42 is formed in an annular shape along the circumferential direction.
  • the groove 42 has a rectangular cross-sectional shape cut in the diameter direction, and the dimension in the axial direction Ax (the axial direction Ax width) is substantially the same as the axial direction Ax width of the magnetic pole part 63. .
  • the height of the groove 42 in the axial direction Ax is substantially the same as the height of the magnetic pole 63, and the bottom 42 a facing the radially outward direction of the groove 42 is the inner peripheral surface 63 a of the magnetic pole 63.
  • the groove portion 42 is provided on the circumference passing through the portion facing the magnetic pole portion 63 of the outer peripheral surface 4a.
  • the groove 42 has a dimension (depth L2) from the outer peripheral surface 4a to the bottom surface 42a of the rotor 4 in the radial direction, as shown in FIG. 3, from the inner peripheral surface 63a of the magnetic pole portion 63 in the radial direction to the auxiliary magnetic pole portion 7.
  • the inner diameter 71a is substantially the same as the dimension (offset dimension L1). Therefore, the distance from the bottom surface 42a of the groove portion 42 to the inner peripheral surface 63a of the magnetic pole portion 63 directly facing the bottom surface 42a and the auxiliary magnetic pole portion 7 directly facing this portion from a portion other than the bottom surface 42a on the outer peripheral surface 4a of the rotor 4 The distance to the inner peripheral surface 71a is substantially equal.
  • the pump 1 can prevent the first magnetic pole piece 72a from coming into contact with the cylindrical outer peripheral surface 21a by providing the protruding portion 25. It is possible to make it difficult for the first magnetic pole piece 72a to be deformed due to contact.
  • the inner peripheral surface 71a of the first magnetic pole piece 72a and the cylindrical outer peripheral surface 21a are arranged by offsetting the inner peripheral surface 71a of the auxiliary magnetic pole portion 7 in the radially outward direction with respect to the inner peripheral surface 63a of the magnetic pole portion 63. It is possible to easily reduce the clearance with.
  • the gap between the magnetic pole surface 5a and the outer peripheral surface 4a of the rotor 4 can be easily reduced, and the reduction in motor efficiency associated with securing the clearance for the auxiliary magnetic pole portion 7 (increasing the gap) can be easily suppressed. it can.
  • the magnetic pole part 63 is provided by providing the groove part 42 having a depth L2 substantially the same as the offset dimension L1 on the circumference passing through the part facing the magnetic pole part 63 on the surface facing the magnetic pole face 5a of the magnet 41.
  • the gap with the auxiliary magnetic pole part 7 can be made substantially the same size. Therefore, it is possible to make it difficult for the gap between the magnetic pole surface 5a of the stator 5 having the offset auxiliary magnetic pole portion 7 and the magnet 41 to be uneven, and it is easy to suppress deterioration of the electromagnetic force balance, and motor performance (pump performance). ) Is less likely to occur.
  • the protrusion 25 has a smaller taper on the outer surface 25a than the taper taper, the moldability of the separation plate 2 is improved by suppressing a decrease in releasability associated with the attachment of the protrusion 25, and It is possible to make it difficult for the stator 5 to be tilted or misaligned when the separation plate 2 is attached.
  • the stator 5 can be guided and attached to the separation plate 2 by the inclined surface 25b (gradient) when the pump is assembled. Therefore, it is possible to easily improve the workability at the time of attachment, and it is possible to make it difficult for the stator 5 to be tilted or misaligned.
  • the gap between the magnetic pole surface 5a and the outer peripheral surface 4a of the rotor 4 can be easily reduced, and the auxiliary magnetic pole portion 7 is used. It is possible to easily suppress a decrease in motor efficiency associated with securing the clearance. Then, by eliminating the step, the projection 25 becomes difficult to be caught by the molding die when the separation plate 2 is released, and when the separation plate 2 is molded, the projection 25 can be formed together with the molding of the separation plate 2. it can.
  • the offset dimension L1 preferably satisfies the following formula 1.
  • the groove portion 42 is formed when the impeller 16 (rotor 4) moves toward the suction portion 14 in the axial direction Ax due to pressure fluctuation in the pump chamber 11 due to fluid flow when the impeller 16 rotates.
  • the state where the impeller 16 moves to the suction portion 14 side means that the end portion on the impeller 16 side in the axial direction Ax of the bearing 31 is on the receiving plate 32 fixed to the support shaft 3. In this state, the pump 1 performs work (fluid flow).
  • a step (end surface) may be provided on the flange portion 23 side of the projection portion 25 by cutting the cylindrical portion 21 after the separation plate 2 is formed or by providing the projection portion 25 as a separate member. Good.
  • the protrusion 25 is brought into contact with only the magnetic pole portion 63, it becomes easy to form a clearance between the auxiliary magnetic pole portion 7 and the cylindrical outer peripheral surface 21a, and the inner peripheral surface 63a of the magnetic pole portion 63 and the auxiliary magnetic pole portion are easily formed.
  • the inner peripheral surface 71a of the part 7 can be arranged substantially flush. Furthermore, by making the inner peripheral surfaces 63a and 71a substantially flush, the magnet 41 (rotor 4) without the groove portion 42 can be used to make the gap between the magnetic pole surface 5a and the rotor 4 substantially uniform.
  • the pump 1 is not limited to the centrifugal pump as in the first embodiment, but may be a vortex pump, and is not limited to the centrifugal pump, but is an axial flow pump or the like that causes fluid to flow in the axial direction Ax.
  • the configuration is not limited to these examples.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Une pompe est pourvue d'un moteur (17), d'une roue(16) qui tourne sous l'action du moteur (17) pour provoquer l'écoulement d'un fluide, ainsi que d'un carter (13) de pompe et d'une plaque de séparation (2) qui forment une chambre (11) de pompe dans laquelle est logée la roue (16). Le moteur (17) est pourvu d'un stator (5) et d'un rotor (4) qui est entraîné en rotation par le stator (5) afin de faire tourner la roue (16). Le stator (5) est pourvu d'une section pôle magnétique (63) faisant face au rotor (4). Des sections pôles magnétiques auxiliaires (7) faisant saillie dans la direction axiale (Ax) se situent aux deux extrémités de la section pôle magnétique (63) dans la direction axiale (Ax). La plaque de séparation (2) est pourvue d'une section tube circulaire (21), dont la surface périphérique est disposée entre le stator (5) et le rotor (4). La surface périphérique extérieure de tube circulaire (21a) de la section tube circulaire (21) est pourvue d'une saillie (25) qui est en contact avec seulement la section pôle magnétique (63) parmi la section pôle magnétique (63) et les sections pôles magnétiques auxiliaires (7).
PCT/JP2012/071301 2011-09-27 2012-08-23 Pompe WO2013047027A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-210863 2011-09-27
JP2011210863A JP2013072324A (ja) 2011-09-27 2011-09-27 ポンプ

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Publication Number Publication Date
WO2013047027A1 true WO2013047027A1 (fr) 2013-04-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3163087A1 (fr) * 2015-10-30 2017-05-03 Hangzhou Sanhua Research Institute Co., Ltd. Pompe électrique
LU102802B1 (de) * 2021-05-10 2022-11-10 Wilo Se Nassläuferpumpe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6311996B2 (ja) * 2015-06-26 2018-04-18 パナソニックＩｐマネジメント株式会社 キャンドモータポンプおよびキャンドモータポンプの製造方法
JP2017015002A (ja) * 2015-07-01 2017-01-19 日本電産サンキョー株式会社 ポンプ装置
JP6990119B2 (ja) * 2018-02-20 2022-01-12 株式会社荏原製作所 モータポンプ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200895A (ja) * 1992-12-15 1994-07-19 Japan Servo Co Ltd キャンドモータポンプ
JP2009284704A (ja) * 2008-05-23 2009-12-03 Panasonic Electric Works Co Ltd ポンプ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200895A (ja) * 1992-12-15 1994-07-19 Japan Servo Co Ltd キャンドモータポンプ
JP2009284704A (ja) * 2008-05-23 2009-12-03 Panasonic Electric Works Co Ltd ポンプ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3163087A1 (fr) * 2015-10-30 2017-05-03 Hangzhou Sanhua Research Institute Co., Ltd. Pompe électrique
US10326328B2 (en) 2015-10-30 2019-06-18 Zhejiang Sanhua Automotive Components Co., Ltd Electric pump
LU102802B1 (de) * 2021-05-10 2022-11-10 Wilo Se Nassläuferpumpe
EP4089284A1 (fr) * 2021-05-10 2022-11-16 Wilo Se Pompe à rotor noyé

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