NONMAGNETIC MAGNET RETENTION CHANNEL ARRANGEMENT FOR HIGH SPEED ROTORS
First Claim
1. A magnet retention channel arrangement comprising:
- a U-shaped channel member made of nonmagnetic material having substantially parallel side walls and an end wall joining the side walls at one end thereof, each side wall having a foot portion with a lateral projection at another end of the side wall opposite the end wall.
1 Assignment
0 Petitions
Accused Products
Abstract
In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel member inserted between each adjacent pair of pole pieces. Each magnet retention channel member is made of nonmagnetic material and has opposed side walls and an integral end wall at one end of the side walls and integral dovetail feet at the opposite ends of side walls. The channels contain permanent magnets and the side walls of uniform thickness with nonmagnetic feet within the core member couple the magnetic flux from the magnets to the pole pieces with substantially no magnetic discontinuities while the presence of the nonmagnetic end wall avoids magnetic shorting.
-
Citations
13 Claims
-
1. A magnet retention channel arrangement comprising:
a U-shaped channel member made of nonmagnetic material having substantially parallel side walls and an end wall joining the side walls at one end thereof, each side wall having a foot portion with a lateral projection at another end of the side wall opposite the end wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
10. A high speed rotor comprising:
-
a central shaft;
a nonmagnetic core affixed to the central shaft;
a plurality of radially projecting, angularly spaced pole pieces made of ferromagnetic material and supported from the core; and
a plurality of nonmagnetic U-shaped magnet retention channel members, each channel member being mounted between an adjacent pair of pole pieces and including a pair of spaced side walls adjacent to the pole pieces, an end wall joining the side walls at one end thereof and a pair of feet having lateral projections received in corresponding openings in the nonmagnetic core. - View Dependent Claims (11, 12, 13)
-
Specification