Electrical machines
AssigneeUnique Mobility, Inc.
InventorJohn M. Everton
Life of this patent
Estimating the term…
Abstract
An electromechanical transducer, such as a motor (1), comprising a rotor member (4), a stator member (3) having an electrical winding (8), and isolating means (11, 9, 16, 12) isolating at least a part (18) of one of the members (3) from the other member (4), and cooling fluid in direct contact with said part (18) and isolated from the other member (4). The stator member (3) is preferably cooled by pumping liquid past it, whilst the rotor member (4) is isolated from the liquid. The rotor member (4) preferably operates in an evacuated chamber (48). A pump (5) is preferably provided to pump the cooling liquid around a cooling circuit (47, 6, 5, 47, 42).
Claims20
An electromechanical transducer for an electrically powered automobile, said transducer comprising:
- a housing;
- a stator, disposed within said housing, comprising a winding, said winding having a first region embedded in thermal insulating resin, and a second region not embedded in said resin;
- a rotor, disposed within said housing, comprising (i) a main shaft, and (ii) at least one permanent magnet disposed in operative association with said stator;
- means, operatively disposed within said stator, for fluidly isolating said second region of said winding from a remaining portion of said transducers;
- and
- means, in fluid communication with said second region of said winding, for circulating coolant over said second region of said winding, to thereby dissipate heat from said transducer;
- wherein:
- said second region comprises a plurality of end turns of said winding;
- said first region comprises a central portion of said winding that is between said plurality of end turns;
- and
- said coolant is in direct cooling contact with said second region, but not with said first region.
An electromechanical transducer comprising:
- a rotor member;
- a stator member;
- an electrical winding on a first one of (i) the rotor member and (ii) the stator member;
- isolating means for isolating at least a part of said first one of (i) the rotor member and (ii) the stator member from a second one of (i) the rotor member and (ii) the stator member;
- and
- cooling fluid in direct contact with said part, said isolating means isolating said part from the second one of (i) the rotor member and (ii) the stator member;
- a plurality of end turns of said electrical winding being disposed on said part;
- and
- said cooling fluid being in direct contact with said plurality of end turns, but not with a central portion of the electrical winding between the plurality of end turns.
An electromechanical transducer for an electrically powered automobile, said transducer comprising:
- a housing;
- a stator, disposed within said housing, comprising a winding, said winding having a first central region which is embedded in thermal insulating resin, and a second region comprising a plurality of end turns of said windings which are not embedded in said resin;
- a rotor, disposed within said housing, comprising (i) a main shaft, and (ii) at least one permanent magnet disposed in operative association with said stator;
- sealing means, operatively disposed within said stator, said sealing means and said resin acting to define a chamber for fluidly isolating said second region of said winding from a remaining portion of said transducer;
- and
- means, in fluid communication with said second region of said winding, for circulating coolant over and in direct cooling contact with said second region of said winding, to thereby dissipate heat from said transducer.
Dependencies are inferred from the claim text.