Blower comprising impeller and motor
AssigneeNidec Corporation
InventorsTakehito Tamaoka, Masashi Hirayama, Naruyuki Horaitani, Shun Hirano, Takayuki Ito
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Abstract
The blowing device includes an impeller that is rotatable about a center axis and a motor that drives the impeller. The impeller includes a plurality of vanes arranged in a circumferential direction, a flange in which the plurality of vanes are provided at the outer circumferential edge in a radial-direction outside, and a plate-shaped first shielding unit located between the vanes adjacent to each other in the circumferential direction. The first shielding unit is connected to a rear edge surface on an opposite side to the rotation direction of the vane and an outside surface located on the radial-direction outside of the flange.
Claims21
A blower comprising:
- an impeller that is rotatable about a central axis;
- and
- a motor that drives the impeller,
- wherein the impeller includes
- a plurality of vanes arranged in a circumferential direction,
- a flange in which the plurality of vanes are provided at an outer circumferential edge on a radial-direction outside, and
- a first shielding unit having a plate shape and located between each pair of adjacent vanes in the circumferential direction, and
- the first shielding unit is connected to a a vane rear edge surface on an opposite side to the rotating direction and an outside surface located on the radial-direction outside of the flange,
- wherein the impeller further includes a plate-shaped second shielding unit, and
- the second shielding unit is provided between the outside surface located on the radial-direction outside of the flange and a front edge surface located on the rotation direction side in the circumferential direction of the vanes between the vanes adjacent to each other in the circumferential direction,
- wherein between the vanes adjacent to each other in the circumferential direction, a first area viewed from the axial direction of the first shielding unit is larger than a second area viewed from the axial direction of the second shielding unit.
A blower comprising:
- an impeller that is rotatable about a central axis;
- and
- a motor that drives the impeller,
- wherein the impeller includes
- a plurality of vanes arranged in a circumferential direction,
- a flange in which the plurality of vanes are provided at an outer circumferential edge on a radial-direction outside, and
- a first shielding unit having a plate shape and located between each pair of adjacent vanes in the circumferential direction, and
- the first shielding unit is connected to a vane rear edge surface on an opposite side to the rotating direction and an outside surface located on the radial-direction outside of the flange,
- wherein the rear edge surface of each of the vanes is curved toward the opposite side to the rotation direction in the circumferential directions when viewed from the axial directions,
- wherein
- when viewed from the axial direction,
- a first end on a radial-direction outside of the first shielding unit is located on a radial-direction inside with respect to a second end located on the opposite side to the rotation direction in the circumferential direction of the first shielding unit between an inner end and an outer end in the radial direction of the vanes, and
- an edge on the opposite side to the rotation direction in the circumferential direction of the first shielding unit extends from the first end toward the outer circumferential edge of the flange,
- wherein the first end of the first shielding unit is located on the rotation direction side in the circumferential direction with respect to the second end.
Dependencies are inferred from the claim text.