RADIAL MAGNETIC BEARING AND METHOD OF MANUFACTURE
First Claim
1. A radial magnetic bearing, comprising:
- an inner rotor having an axis of rotation and including a central shaft having an outer periphery and a ferromagnetic armature mounted on the shaft on outer periphery; and
an outer stator having a plurality of electromagnets including poles made of at least one of a ferromagnetic and stainless ferromagnetic material that project radially inwardly towards the rotor, leaving air-gaps (e) between end faces of the poles and the ferromagnetic armature, andcoils wound around the poles, the poles being extended through outer portions attached to a supporting member, whereineach pole and the corresponding outer portion are included in an angularly segmented module having a stack of laminations made of at least one of a ferromagnetic and stainless ferromagnetic material, the outer portion defining shoulders with respect to the pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, and whereincoils located in free spaces around the poles are mounted in a string.
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Accused Products
Abstract
A radial magnetic bearing having an inner rotor including a central shaft having a ferromagnetic armature mounted on the shaft and an outer stator providing a plurality of electromagnets including poles made of ferromagnetic material which project radially inwardly towards the rotor is provided. As such, air-gaps (e) are left between end faces of the poles and the ferromagnetic armature, and coils wound around the poles. The poles are extended through outer portions attached to a supporting member. Each pole and the corresponding outer portion are included in an angularly segmented module providing a stack of laminations made of ferromagnetic material. The outer portion defines shoulders with respect to the corresponding pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, wherein the coils located in free spaces around the poles are mounted in a string.
5 Citations
14 Claims
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1. A radial magnetic bearing, comprising:
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an inner rotor having an axis of rotation and including a central shaft having an outer periphery and a ferromagnetic armature mounted on the shaft on outer periphery; and an outer stator having a plurality of electromagnets including poles made of at least one of a ferromagnetic and stainless ferromagnetic material that project radially inwardly towards the rotor, leaving air-gaps (e) between end faces of the poles and the ferromagnetic armature, and coils wound around the poles, the poles being extended through outer portions attached to a supporting member, wherein each pole and the corresponding outer portion are included in an angularly segmented module having a stack of laminations made of at least one of a ferromagnetic and stainless ferromagnetic material, the outer portion defining shoulders with respect to the pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, and wherein coils located in free spaces around the poles are mounted in a string. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for making a radial magnetic bearing having an inner rotor having an axis of rotation and including a central shaft having an outer periphery and a ferromagnetic armature mounted on the shaft on outer periphery;
- and an outer stator having a plurality of electromagnets including poles made of at least one of a ferromagnetic and stainless ferromagnetic material that project radially inwardly towards the rotor, leaving air-gaps (e) between end faces of the poles and the ferromagnetic armature, and coils wound around the poles, the poles being extended through outer portions attached to a supporting member, wherein each pole and the corresponding outer portion are included in an angularly segmented module having a stack of laminations made of at least one of a ferromagnetic and stainless ferromagnetic material, the outer portion defining shoulders with respect to the pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, and wherein coils located in free spaces around the poles are mounted in a string, comprising the steps of;
forming a plurality of angularly segmented modules each having a pole and an outer portion made of a stack of laminations made of ferromagnetic or stainless ferromagnetic material, the outer portion defining shoulders with respect to the pole, forming first and second clamping rings, forming a plurality of coils connected in a string, the number of the coils being equal to the number of the poles, arranging the angularly segmented modules in such a manner that each of the outer portion contacts outer portions of neighboring segmented modules, free spaces being defined between the poles of adjacent segmented modules, assembling the angularly segmented modules together with the first and second clamping rings, and inserting the plurality of coils interconnected in a string in the free spaces around the plurality of poles of the segmented modules. - View Dependent Claims (12, 13, 14)
- and an outer stator having a plurality of electromagnets including poles made of at least one of a ferromagnetic and stainless ferromagnetic material that project radially inwardly towards the rotor, leaving air-gaps (e) between end faces of the poles and the ferromagnetic armature, and coils wound around the poles, the poles being extended through outer portions attached to a supporting member, wherein each pole and the corresponding outer portion are included in an angularly segmented module having a stack of laminations made of at least one of a ferromagnetic and stainless ferromagnetic material, the outer portion defining shoulders with respect to the pole, the outer portion contacting outer portions of neighboring segmented modules and the outer portions of all segmented modules being assembled by clamping rings, and wherein coils located in free spaces around the poles are mounted in a string, comprising the steps of;
Specification