Back to results
US 12,044,242 B2Granted
Electric machine
AssigneeDyson Technology Limited
InventorChristopher Keith Sullivan
Life of this patent
Estimating the term…
Abstract
An electric machine comprising: a stator assembly; a rotor assembly; and a support body. The rotor assembly comprises a shaft to which is mounted a first bearing and a second bearing either side of a permanent magnet, and the support body comprises first and second bearing seats to which the bearings of the rotor assembly are mounted, wherein the first bearing is mounted to the first bearing seat by adhesive, and the second bearing is soft-mounted to the second bearing seat by an o-ring.
Claims20
An electric machine comprising:
- an impeller;
- a stator assembly;
- a rotor assembly, comprising:
- a one-piece shaft;
- a first bearing and a second bearing each mounted to the one-piece shaft, wherein the impeller is mounted directly to an end of the one-piece shaft that extends through the second bearing;
- and
- a permanent magnet mounted on the one-piece shaft between the first bearing and second bearing;
- and
- a support body comprising first and second bearing seats to which the bearings of the rotor assembly are mounted, wherein:
- the first bearing is mounted to the first bearing seat by adhesive;
- the second bearing is soft-mounted to the second bearing seat by an o-ring;
- and
- the second bearing is mounted closer to the end of the one-piece shaft than the first bearing.
10 more elements
An electric machine comprising:
- a stator assembly comprising a plurality of stator elements;
- a rotor assembly, comprising:
- a shaft configured to drive a load mounted to an end of the shaft;
- a first bearing and a second bearing each mounted to the shaft;
- and
- a permanent magnet mounted on the shaft between the first bearing and second bearing;
- and
- a support body, comprising:
- an elongate central part, wherein the entirety of a winding of the stator elements are radially external to the elongate central part of the support body;
- and
- first and second bearing seats to which the bearings of the rotor assembly are mounted, wherein the first bearing is mounted to the first bearing seat by adhesive and the second bearing is soft-mounted to the second bearing seat by an o-ring.
8 more elements
An electric machine comprising:
- an impeller;
- a stator assembly;
- a rotor assembly, comprising:
- a shaft;
- a first bearing and a second bearing each mounted to the shaft, wherein the impeller is directly mounted to an end of the shaft and the shaft is sized to extend from the first bearing and through the second bearing to support the impeller;
- and
- a permanent magnet mounted on the shaft between the first bearing and second bearing;
- and
- a support body comprising first and second bearing seats to which the bearings of the rotor assembly are mounted, wherein:
- the first bearing is mounted to the first bearing seat by adhesive;
- the second bearing is soft-mounted to the second bearing seat by an o-ring;
- and
- the second bearing is mounted closer to the end of the shaft than the first bearing.
10 more elements
Dependencies are inferred from the claim text.