摘要:
This centrifugal blood pump apparatus includes an impeller (10) provided in a blood chamber (7), and a plurality of coils (20) provided in a motor chamber (8) for driving the impeller (10) to rotate with a dividing wall (6) interposed therebetween. A flexible substrate (23) in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (20), and is connected to the plurality of coils (20) and a connector (24). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils (20) via the connector (24) and the flexible substrate (23). Thus, assembling workability, productivity and reliability are improved.
摘要:
A centrifugal blood pump device 1 includes a housing 20, a centrifugal pump section 2 having an impeller 21 which rotates in the housing to send blood by centrifugal force upon rotation, an impeller rotation torque generation section 3 for attracting a magnetic member 25 of the impeller and rotating the impeller 21, and a plurality of grooves for hydrodynamic bearing provided on an inner face of the housing 20 on the impeller rotation torque generation section 3 side. Further, a side wall 52 of each of the grooves for hydrodynamic bearing is formed as an inclined side wall 52 inclined obliquely such that the groove for hydrodynamic bearing is expanded from a bottom face 53 of the groove for hydrodynamic bearing toward an opening face of the groove for hydrodynamic bearing.
摘要:
The present invention refers to an operating machine, in particular a motor- driven pump with an axial motor arrangement, comprising a rotor assembly (18) and a stator assembly (7). The rotor assembly (18) includes an impeller (4) and a permanent-magnet rotor (5) firmly associated to the impeller (4). The stator assembly (7) includes a single multipolar stator (8, 9, 10) interacting with the rotor (5) to impart a rotary motion to the impeller (4) along an axis (A) perpendicular to the rotor (5). The rotor assembly (18) is rotatably supported by a flange (6) adapted to separate the rotor assembly (18) from the stator assembly (7). Guide means (16, 17) are provided between the rotor assembly (18) and the flange (6) to guide the rotary motion of the impeller (4) about the axis (A).
摘要:
The invention relates to an electric centrifugal pump (1) for conveying a fluid, in particular for conveying fuel to an aircraft engine, comprising a housing (2) in which a rotor shaft (3) is rotationally mounted and an impeller (4) for conveying the fuel is arranged on said rotor shaft (3). A motor arrangement is provided for driving the rotor shaft (3) in a rotary manner about a rotor axis (5). According to the invention, said impeller (4) comprises at least one rotor (6) and at least one stator (7) is arranged in the housing (2) in a plane-parallel manner adjacent to the rotor (6), such that said rotor (6) and the stator (7) form the motor arrangement.
摘要:
The invention relates to a blood pump having an impeller with a rotation axis in a pump housing, wherein the blood pump has an inlet and an outlet. According to the invention, the blood pump is characterized in that it contains at least two elements separated spatially from each other, at least one of the elements being configured such that it has a stabilizing effect on flow mechanics in a radial direction component, and in that at least one further element constitutes a radial magnetic bearing.
摘要:
The invention relates to a wet running pump (10) which comprises a rotor (26) which is connected to a pump wheel (18) and which is arranged in a wet area (28) which can be cross flown by a guided fluid. Said wet area (28) is separated from a dry area (46) wherein a stator (42), which co-operates with the rotor (26), is arranged. According to the invention, the wet area is separated from the dry area by a conductor plate (34), wherein the electric lines thereof form the stator (42) such that the conductor plate (34) simultaneously forms a spacer which simplifies the construction mounting of the wet running pump (10).
摘要:
Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
摘要:
A pump includes an impeller (310), a stator (380), and a plurality of permanent magnets (320) forming bearing poles coupled to a selected one of the stator or the impeller. The pump further includes a plurality of shorted coils (370) coupled to the other of the stator or the impeller. The magnets may be arranged as a Halbach array. The plurality of bearing poles and shorted coils co-operate to form an electrodynamic bearing during rotation of the impeller. The electrodynamic bearing supports the impeller either axially or radially during operation of the pump. Currents induced into each coil by a single bearing pole or by a plurality of bearing poles substantially simultaneously produce an electrodynamically generated magnetic field that repels the inducing bearing pole(s) when the impeller is rotating.