Integrated Fluid Power Conversion System
First Claim
1. A fluid power conversion apparatus serving fluid pumping and/or power-generation functions, comprising:
- an impeller having an impeller hub and a periphery;
a housing around the impeller;
a diffusor having (a) an outer wall attached to the housing, (b) a diffusor hub axially-aligned with the impeller hub, rotatable support of the impeller being provided only by a bearing assembly internal to the hubs, and (c) at least one stator vane securing the diffusor hub to the outer wall; and
a rotating electrical machine having (a) an armature attached to the housing and (b) a rotor attached to the impeller periphery and positioned to form a gap between rotor and armature, whereby the impeller and the rotor form an integrated unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A fluid power conversion apparatus (1) serving fluid pumping and/or power-generation functions, including: (a) an impeller (5) having a hub (8) and a periphery; (b) a housing (13) around the impeller; (c) a diffusor (12) having an outer wall attached to the housing, a diffusor hub (7) axially-aligned with the impeller hub, rotatable support of the impeller being provided only by a bearing assembly (6) internal to the hubs, and at least one stator vane (11) securing the diffusor hub to the outer wall; and (d) a rotating electrical machine with an armature (16) attached to the housing and a rotor (20) attached to the impeller periphery and positioned to form a gap (18) between rotor and armature. The impeller and the rotor form an integrated unit. In a preferred embodiment, the armature has radially-inward protrusions having laminations (73) and windings (74), and the rotor has parallel magnetic rings (71) configured to sandwich the protrusions, the rings each having a plurality of magnetic poles configured so each north pole is aligned with a south pole on its neighboring ring(s).
-
Citations
18 Claims
-
1. A fluid power conversion apparatus serving fluid pumping and/or power-generation functions, comprising:
-
an impeller having an impeller hub and a periphery;
a housing around the impeller;
a diffusor having (a) an outer wall attached to the housing, (b) a diffusor hub axially-aligned with the impeller hub, rotatable support of the impeller being provided only by a bearing assembly internal to the hubs, and (c) at least one stator vane securing the diffusor hub to the outer wall; and
a rotating electrical machine having (a) an armature attached to the housing and (b) a rotor attached to the impeller periphery and positioned to form a gap between rotor and armature, whereby the impeller and the rotor form an integrated unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification