Motor-driven supercharger
AssigneeIHI Corporation
InventorsMasahiro Shimizu, Yasuyuki Shibui
Life of this patent
Estimating the term…
Abstract
A motor stator (24) has a stator iron core (24a), a stator winding (24b), and a mold member (30) embedding them in an inner portion and having a high coefficient of thermal conductivity. The mold member (30) has a heat insulating layer (32) closely attached to an inner surface thereof surrounding a motor rotor (22) and to an outer surface thereof in an axial direction. Further, an outer sleeve (26) is provided so as to be closely attached to an outer peripheral surface of the mold member (30) and to an inner surface of a bearing housing (16). The outer sleeve (26) forms a liquid tight water cooling jacket (26b) between the outer sleeve and the bearing housing.
Claims5
A motor-driven supercharger comprising:
- a turbine shaft having a turbine impeller in one end thereof;
- a compressor impeller rotationally driven by the turbine shaft;
- a bearing housing supporting the rotatable turbine shaft;
- a motor stator fixed within the bearing housing;
- and
- a motor rotor rotationally driven by the motor stator,
- wherein the motor stator has a stator iron core, a stator winding, and a mold member embedding the stator iron core and the stator winding therein and having a high coefficient of thermal conductivity, and
- further comprising an outer sleeve closely attached to an outer peripheral surface of the mold member and to an inner surface of the bearing housing, wherein the outer sleeve forms a liquid tight water cooling jacket between the outer sleeve and the bearing housing.
A motor-driven supercharger comprising:
- a turbine shaft having a turbine impeller in one end thereof;
- a compressor impeller rotationally driven by the turbine shaft;
- a bearing housing supporting the rotatable turbine shaft;
- a motor stator fixed within the bearing housing;
- and
- a motor rotor rotationally driven by the motor stator,
- wherein the motor stator has a stator iron core, a stator winding, and a mold member embedding the stator iron core and the stator winding therein and having a high coefficient of thermal conductivity, and
- wherein the mold member has a heat insulating layer closely attached to an inner surface thereof surrounding the motor rotor and to an outer surface thereof in an axial direction.
A motor-driven supercharger comprising:
- a turbine shaft having a turbine impeller in one end thereof;
- a compressor impeller rotationally driven by the turbine shaft;
- a bearing housing supporting the rotatable turbine shaft;
- a motor stator fixed within the bearing housing;
- and
- a motor rotor rotationally driven by the motor stator,
- wherein the motor stator has a stator iron core, a stator winding, and a mold member embedding the stator iron core and the stator winding therein and having a high coefficient of thermal conductivity,
- further comprising an outer sleeve closely attached to an outer peripheral surface of the mold member and to an inner surface of the bearing housing, wherein the outer sleeve forms a liquid tight water cooling jacket, and
- wherein the mold member has:
- a hollow cylinder portion embedding the stator iron core therein;
- an outward collar portion contacting both ends in an axial direction of the hollow cylinder portion, and embedding the stator winding therein, and
- wherein the outer sleeve has an inner surface contacting outer surfaces of the hollow cylinder portion and the outward collar portion, and an inner surface contacting an inner surface in the axial direction of the outward collar portion.
Dependencies are inferred from the claim text.