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US 11,953,016 B2Granted
Blower
AssigneeKoki Holdings Co., Ltd.
InventorsMikihiro Kataoka, Naoto Ichihashi
Life of this patent
Estimating the term…
Abstract
A blower has: a fan generating an air flow in an axial direction of a rotary shaft; a tubular motor holder 30 formed in a tubular shape and holding the motor radially inside thereof; and a fan case part accommodating the motor, the motor holder, and the fan and forming an air flow path. A first rectification parts that is integrally formed is provided on an inside portion of the fan case part. The first rectification part is formed in a rib shape by a first to fourth blade, weakens a rotational component of a flow of air discharged from the fan, and guides the air to smoothly flow in the axial direction. The motor holder is configured so as to have an axial length smaller than the motor.
Claims13
A blower comprising:
- a motor with a rotary shaft extending in an axial direction;
- a fan comprising a first wall surrounding the rotary shaft, a second wall surrounding the rotary shaft, and a plurality of curved blades disposed between the first wall and the second wall, the fan configured to rotate by a driving force of the motor and to generate an air flow;
- a tubular motor holder formed in a tubular shape extending in the axial direction of the rotary shaft and configured to hold the motor radially inside thereof;
- and
- a fan case formed in a tubular shape extending in the axial direction, configured to accommodate the motor, the motor holder, and the fan and to form a flow path of the air flow;
- wherein the fan case has:
- a large diameter portion, accommodating the motor, the motor holder and the fan;
- a cylindrical tip part, having a diameter smaller than a diameter of the large diameter portion, the cylindrical tip part having an opening disposed such that an axial line of the rotary shaft passes through the opening;
- a tapered part, connecting the large diameter portion and the cylindrical tip part, the tapered part is tapered such that, in the axial direction, a diameter of the tapered part becomes smaller moving away from the large diameter portion;
- a plurality of ribs, integrally formed with the tapered part, each rib protrudes inward from an inner peripheral surface of the tapered part, an inward end of each rib is separated from the motor and the motor holder, and each rib extends along the axial direction of the rotary shaft.
7 more elements
A blower comprising:
- a motor with a rotary shaft extending in an axial direction;
- a fan comprising a first wall surrounding the rotary shaft, a second wall surrounding the rotary shaft, and a plurality of curved blades disposed between the first wall and the second wall, the fan configured to rotate by a driving force of the motor and to generate an air flow;
- a tubular motor holder formed in a tubular shape extending in the axial direction of the rotary shaft and configured to hold the motor radially inside thereof;
- and
- a fan case formed in a tubular shape extending in the axial direction, configured to accommodate the motor, the motor holder, and the fan and to form a flow path of the air flow;
- wherein the fan case has a first rectification part integrally molded radially inside thereof,
- the first rectification part comprises a plurality of ribs protruding inward from an inner peripheral surface of the fan case and inclined with respect to the rotary shaft, and
- wherein the first rectification part comprises a first support part in contact with and supporting an outer peripheral surface of the motor.
5 more elements
A blower comprising:
- a motor with a rotary shaft extending in an axial direction;
- a fan comprising a first wall surrounding the rotary shaft, a second wall surrounding the rotary shaft, and a plurality of curved blades disposed between the first wall and the second wall, the fan configured to rotate by a driving force of the motor and to generate an air flow;
- a tubular motor holder formed in a tubular shape extending in the axial direction of the rotary shaft and configured to hold the motor radially inside thereof;
- and
- a fan case formed in a tubular shape extending in the axial direction, configured to accommodate the motor, the motor holder, and the fan and to form a flow path of the air flow;
- wherein the fan case has a first rectification part integrally molded radially inside thereof,
- the first rectification part comprises a plurality of ribs protruding inward from an inner peripheral surface of the fan case and inclined with respect to the rotary shaft, and
- wherein the first rectification part comprises a first support part supporting the motor by interposing an elastic body between the first support part and the motor.
5 more elements
Dependencies are inferred from the claim text.