Blower and vacuum cleaner

Abstract

A blower according to an exemplarily embodiment of the present disclosure includes a motor that includes a shaft disposed along a center axis extending vertically; an impeller that is connected to the shaft and rotates integrally with the shaft; an impeller housing that is disposed on an upper side of the impeller or a radially outer side of the impeller; a motor housing that is disposed on a radially outer side of the motor; a passage member that is disposed on a radially outer side of the motor housing with a gap interposed therebetween; and a plurality of stator blades that are arranged in a circumferential direction in the gap between the motor housing and the passage member. At least one of the stator blades includes a first stator blade disposed on either one of the motor housing and the passage member, and a second stator blade disposed on the other one of the motor housing and the passage member. The first stator blade and the second stator blade are coupled together in a radial direction or an axial direction.

1 - 14 . (canceled) 
     
     
         15 : A blower, comprising:
 a motor that includes a shaft disposed along a center axis extending vertically;   an impeller that is connected to the shaft and rotates integrally with the shaft;   an impeller housing that is disposed on an upper side of the impeller or a radially outer side of the impeller;   a motor housing that is disposed on a radially outer side of the motor;   a passage member that is disposed on a radially outer side of the motor housing with a gap interposed therebetween; and   a plurality of stator blades that are arranged in a circumferential direction in the gap between the motor housing and the passage member,   wherein at least one of the stator blades includes
 a first stator blade disposed on either one of the motor housing and the passage member, and 
 a second stator blade disposed on the other one of the motor housing and the passage member, and 
   wherein the first stator blade and the second stator blade are coupled together in a radial direction or an axial direction.   
     
     
         16 : The blower according to  claim 15 ,
 wherein the first stator blade and the second stator blade respectively have a first connecting portion and a second connecting portion, and   wherein at least part of the first connecting portion and at least part of the second connecting portion are in contact with each other in the axial direction.   
     
     
         17 : The blower according to  claim 15 ,
 wherein the first stator blade and the second stator blade respectively have a first connecting portion and a second connecting portion, and   wherein at least part of the first connecting portion and at least part of the second connecting portion are in contact with each other in the circumferential direction.   
     
     
         18 : The blower according to  claim 16 ,
 wherein the first connecting portion includes a protrusion extending in the axial direction or the radial direction,   wherein the second connecting portion includes a recess recessed in the axial direction or the radial direction,   wherein a circumferential width of at least part of the protrusion is smaller than a circumferential width of the stator blade, and   wherein the protrusion is inserted into the recess.   
     
     
         19 : The blower according to  claim 16 ,
 wherein the first connecting portion and the second connecting portion respectively have a first stepped portion and a second stepped portion extending in the axial direction, and   surfaces of the first stepped portion and the second stepped portion facing each other in the axial direction, or surfaces of the first stepped portion and the second stepped portion facing each other in the circumferential direction are in contact with each other.   
     
     
         20 : The blower according to  claim 15 ,
 wherein the first stator blade is located to an axially upper side of the second stator blade,   wherein the first stator blade has a first side surface facing to a rear side in a rotation direction of the impeller,   wherein the second stator blade has a second side surface facing to the rear side in the rotation direction of the impeller, and   wherein the first side surface and the second side surface are smoothly connected together.   
     
     
         21 : The blower according to  claim 20 , wherein, in the circumferential direction, a lower end portion of the first side surface is located to a rear side of an upper end portion of the second side surface in the rotation direction of the impeller. 
     
     
         22 : The blower according to  claim 15 , wherein the stator blade including the first stator blade and the second stator blade includes a plurality of stator blades arranged irregularly in the circumferential direction. 
     
     
         23 : The blower according to  claim 20 , wherein an upper portion of the first side surface is curved to a front side in the rotation direction from the axially upper side toward an axially lower side. 
     
     
         24 : The blower according to  claim 15 ,
 wherein, in the gap of an axial-direction area in which the stator blades are disposed, a gap in the radial direction at an upper end of the axial-direction area is wider than a gap in the radial direction at a lower end of the axial-direction area.   
     
     
         25 : The blower according to  claim 24 ,
 wherein the gap in the radial direction at the lower end of the axial-direction area is narrower than a gap in the radial direction between an outer surface of the motor housing at a portion below the axial-direction area in the axial direction and an inner surface of the passage member.   
     
     
         26 : A blower, comprising:
 a motor that includes a shaft disposed along a center axis extending vertically;   an impeller that is connected to the shaft and rotates integrally with the shaft;   an impeller housing that is disposed on an upper side of the impeller or a radially outer side of the impeller;   a motor housing that is disposed on a radially outer side of the motor;   a passage member that is disposed on a radially outer side of the motor housing with a gap interposed therebetween; and   a plurality of stator blades that are arranged in a circumferential direction in the gap between the motor housing and the passage member,   wherein the stator blades are disposed on either one of the motor housing and the passage member, and each have a recess recessed to an upper side in an axial direction at an axially lower end portion,   wherein a connecting portion is disposed on the other one of the motor housing and the passage member, and   wherein the connecting portion is engaged with at least one of the recesses.   
     
     
         27 : A blower, comprising:
 a motor that includes a shaft disposed along a center axis extending vertically;   an impeller that is connected to the shaft and rotates integrally with the shaft;   an impeller housing that is disposed on an upper side of the impeller or a radially outer side of the impeller;   a motor housing that is disposed on a radially outer side of the motor;   a passage member that is disposed on a radially outer side of the motor housing with a gap interposed therebetween; and   a plurality of stator blades that are arranged in a circumferential direction in the gap between the motor housing and the passage member,   wherein the stator blades are disposed on either one of the motor housing and the passage member, and each have a recess recessed in the circumferential direction in a surface of the stator blade facing to a front side in a rotation direction of the impeller,   wherein a connecting portion is disposed on the other one of the motor housing and the passage member, and   wherein the connecting portion is engaged with at least one of the recesses.   
     
     
         28 : A vacuum cleaner, comprising the blower according to  claim 15 .