JPWO2023181193A5

JPWO2023181193A5 - Blower

Info

Publication number: JPWO2023181193A5
Application number: JP2024509534A
Authority: JP
Publication date: 2024-05-07

Description

本開示は、主板と複数の翼とを有する羽根車を備える送風機に関する。 The present disclosure relates to a blower including an impeller having a main plate and a plurality of blades.

本開示は、上記に鑑みてなされたものであって、制振材を用いることなく共振を低減させることができる送風機を得ることを目的とする。 The present disclosure has been made in consideration of the above, and has an object to provide a blower that can reduce resonance without using vibration-damping material.

上述した課題を解決し、目的を達成するために、本開示にかかる送風機は、シャフトと、シャフトの一部を収容する筐体とを有するモータと、シャフトのうち筐体の外部に位置する部分に取り付けられてシャフトの回転に伴って回転する主板と、主板の外周縁に沿って互いに間隔を空けて設けられてシャフトの軸方向に延びる複数の翼とを有する羽根車と、主板と筐体との間でシャフトに取り付けられて、主板に接触して羽根車の軸方向の位置を固定する固定部材と、羽根車を収容するケーシングと、を備えている。主板は、固定部材の方を向く主板軸端面を有している。主板軸端面および固定部材のうちいずれか一方には、軸方向と直交する方向である半径方向にシャフトと離れた位置に設けられて主板軸端面および固定部材のうちいずれか他方に接触する接触部と、シャフトから接触部に亘って設けられて接触部が主板軸端面および固定部材のうちいずれか他方に接触した状態で主板軸端面および固定部材のうちいずれか他方から離隔する離隔部とが形成されている。 In order to solve the above problems and achieve the object, the blower according to the present disclosure includes a motor having a shaft and a housing that houses a part of the shaft, a main plate that is attached to a part of the shaft located outside the housing and rotates with the rotation of the shaft, an impeller having a plurality of blades that are spaced apart from each other along the outer periphery of the main plate and extend in the axial direction of the shaft, a fixing member that is attached to the shaft between the main plate and the housing and contacts the main plate to fix the axial position of the impeller, and a casing that houses the impeller. The main plate has a main plate shaft end face that faces the fixing member. Either one of the main plate shaft end face and the fixing member has a contact portion that is provided at a position away from the shaft in the radial direction, which is a direction perpendicular to the axial direction, and contacts the other of the main plate shaft end face and the fixing member, and a separation portion that is provided from the shaft to the contact portion and is separated from the other of the main plate shaft end face and the fixing member when the contact portion contacts the other of the main plate shaft end face and the fixing member.

本開示にかかる送風機は、制振材を用いることなく共振を低減させることができるという効果を奏する。 The blower according to the present disclosure has an advantage in that it is possible to reduce resonance without using a vibration-damping material.

以下に、実施の形態にかかる送風機を図面に基づいて詳細に説明する。 Hereinafter, a blower according to an embodiment will be described in detail with reference to the drawings.

Claims

A motor having a shaft and a housing that accommodates a portion of the shaft;
an impeller having a main plate attached to a portion of the shaft located outside the housing and rotating with the rotation of the shaft, and a plurality of blades provided at intervals along an outer circumferential edge of the main plate and extending in an axial direction of the shaft;
a fixing member attached to the shaft between the main plate and the housing and in contact with the main plate to fix the axial position of the impeller;
A casing that houses the impeller;
Equipped with
The main plate has a main plate axial end surface facing the fixed member,
a contact portion provided at a position away from the shaft in a radial direction, which is a direction perpendicular to the axial direction, and in contact with the other of the main plate shaft end face and the fixed member, and a separation portion provided from the shaft to the contact portion and in a state where the contact portion is in contact with the other of the main plate shaft end face and the fixed member, the contact portion being separated from the other of the main plate shaft end face and the fixed member.

the contact portion is an annular flat surface provided at a position spaced apart from the shaft in the radial direction and in contact with the fixed member,
The blower according to claim 1 , wherein the separating portion is a recess that is provided from the shaft to the flat surface and is separated from the fixed member in a state where the flat surface is in contact with the fixed member.

the contact portion and the separation portion are formed on one of a surface of the fixing member facing one side along the axial direction and a surface of the fixing member facing the other side along the axial direction,
The blower according to claim 1 , wherein the other of the surface of the fixing member facing one side along the axial direction and the surface facing the other side along the axial direction is a flat surface.

The contact portion is a plurality of protruding portions provided at positions spaced apart from the shaft in the radial direction and spaced apart from each other along a circumferential direction which is a rotation direction of the shaft, and protruding toward the main plate shaft end surface,
The blower according to claim 3, wherein the separation portion is a plane that is provided from the shaft to the protrusion and is separated from the main shaft end surface with the protrusion in contact with the main shaft end surface.

the contact portion is an annular flat surface provided at a position spaced apart from the shaft in the radial direction and in contact with the main plate shaft end surface,
The blower according to claim 3, wherein the separation portion is a stepped portion that is provided from the shaft across the plane and that is spaced apart from the main plate shaft end surface in the axial direction as it moves from the radially outer side to the radially inner side.

The main plate shaft end surface is provided with a plurality of annular flat surfaces arranged concentrically around the shaft,
the flat surfaces are spaced apart from the housing in the axial direction as the flat surfaces are positioned radially inward;
The blower according to claim 1 , wherein one of the flat surfaces serves as the contact portion.

A plurality of ribs are provided on the end surface of the main plate shaft, the ribs extending radially from the shaft in the radial direction and protruding toward the housing,
A surface of each of the ribs facing the housing is provided with a plurality of flat surfaces arranged along the radial direction,
the flat surfaces are spaced apart from the housing in the axial direction as the flat surfaces are positioned radially inward;
The blower according to claim 1 , wherein one of the flat surfaces serves as the contact portion.

The blower according to claim 7 , wherein a surface of each of the ribs facing the housing has a shape that is rotationally asymmetric about a central axis of the shaft.