CENTRIFUGAL BLOWER
First Claim
1. A centrifugal blower comprising:
- a centrifugal fan that rotates by a rotational driving force transmitted thereto, draws air in an axial direction of a rotational axis, and blows the air in a radial direction; and
a case that houses the centrifugal fan and is provided with a suction port for the air, whereinthe centrifugal fan has;
a plurality of blades (that are arranged annularly around the rotational axis; and
an upper-surface-side plate to which the plurality of blades are fixed, the upper-surface-side plate that is arranged to face an suction-side surface of the case) provided with the suction port,the upper-surface-side plate has a protruding part that has an annular shape when viewed in the axial direction and protrudes toward the suction-side surface,the suction-side surface and the upper-surface-side plate form a gap therebetween, and a sealing member made of a semisolid material is disposed in the gap, andthe sealing member is disposed on a side adjacent to the suction-side surface to be in contact with both the suction-side surface and the upper-surface-side plate and is disposed around the rotational axis to have an annular shape when viewed in the axial direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A case housing a centrifugal fan has a suction-side surface provided with a suction port, and two case-side protruding parts that are formed in an annular shape when viewed in an axial direction and protrude toward a centrifugal fan are provided with the suction-side surface. The centrifugal fan has an upper-surface-side plate that is arranged to face the suction-side surface, and the upper-surface-side plate is provided with a fan-side protruding part that is formed in an annular shape when viewed in the axial direction and protrudes toward the suction-side surface. A gap between the two case-side protruding parts in a radial direction is filled with a grease. The fan-side protruding part has a tip portion formed to have a shape that is tapered gradually toward a direction in which the fan-side protruding part protrudes, and the tip portion is in contact with the grease.
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Citations
14 Claims
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1. A centrifugal blower comprising:
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a centrifugal fan that rotates by a rotational driving force transmitted thereto, draws air in an axial direction of a rotational axis, and blows the air in a radial direction; and a case that houses the centrifugal fan and is provided with a suction port for the air, wherein the centrifugal fan has; a plurality of blades (that are arranged annularly around the rotational axis; and an upper-surface-side plate to which the plurality of blades are fixed, the upper-surface-side plate that is arranged to face an suction-side surface of the case) provided with the suction port, the upper-surface-side plate has a protruding part that has an annular shape when viewed in the axial direction and protrudes toward the suction-side surface, the suction-side surface and the upper-surface-side plate form a gap therebetween, and a sealing member made of a semisolid material is disposed in the gap, and the sealing member is disposed on a side adjacent to the suction-side surface to be in contact with both the suction-side surface and the upper-surface-side plate and is disposed around the rotational axis to have an annular shape when viewed in the axial direction. - View Dependent Claims (2, 3, 5, 6, 7, 8, 14)
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4. (canceled)
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9-13. -13. (canceled)
Specification