A blower includes a body, a motor, and a single fan configured to rotate in response to rotation of a motor shaft to discharge air through a discharge opening. The maximum rotational speed of the motor shaft is within a range of 50,000 rpm to 120,000 rpm. An area of the discharge opening is changeable by a user. The blower is configured to selectively operate in a first mode or in a second mode according to the area of the discharge opening. In the first mode, the maximum blowing force of the air discharged through the opening is within a range of 2.5 N to 5.0 N when the motor is driven at the maximum rotational speed. In the second mode, the maximum dynamic pressure of the air discharged is within a range of 30 kPa to 65 kPa when the motor is driven at the maximum rotational speed.

A motor includes a housing that has a bottom with a first bearing accommodation and a cylindrical side surface portion which extends from the bottom; a rotor assembly with a rotation shaft, and a rotor mounted on the rotation shaft and accommodated inside the housing; a stator assembly accommodated inside the housing and surrounding the rotor; a housing cover coupled to an upper end of the housing and having a second bearing accommodation; a flow guide on the housing cover; an impeller connected to the rotation shaft over the flow guide; an impeller cover; a first bearing accommodated in the first bearing accommodation and receiving the rotation shaft; and a second bearing accommodated in the second bearing accommodation and receiving the rotation shaft, the housing cover having a cover body with an opening, connection arms between the second bearing accommodation and the opening portion, and a guide rib.

A blower includes a housing including an inlet and an outlet, a motor to drive a rotatable shaft, first and second impellers provided to the shaft, the first and second impellers each including a plurality of impeller blades, a first stationary component provided to the housing and including stator vanes downstream of the first impeller, and a second stationary component provided to the housing and including stator vanes downstream of the second impeller. A first set of stator vanes of the first stationary component is provided around the motor and are configured and arranged to direct airflow along the motor, to de-swirl the airflow and to decelerate air to increase pressure. A blower including a third impeller and third stationary component positioned above the first impeller is also described.

A blower includes a housing including an inlet and an outlet, a motor to drive a rotatable shaft, first and second impellers provided to the shaft, the first and second impellers each including a plurality of impeller blades, a first stationary component provided to the housing and including stator vanes downstream of the first impeller, and a second stationary component provided to the housing and including stator vanes downstream of the second impeller. A first set of stator vanes of the first stationary component is provided around the motor and are configured and arranged to direct airflow along the motor, to de-swirl the airflow and to decelerate air to increase pressure. A blower including a third impeller and third stationary component positioned above the first impeller is also described.

A blower includes a body, a motor, and a single fan configured to rotate in response to rotation of a motor shaft to discharge air through a discharge opening. The maximum rotational speed of the motor shaft is within a range of 50,000 rpm to 120,000 rpm. An area of the discharge opening is changeable by a user. The blower is configured to selectively operate in a first mode or in a second mode according to the area of the discharge opening. In the first mode, the maximum blowing force of the air discharged through the opening is within a range of 2.5 N to 5.0 N when the motor is driven at the maximum rotational speed. In the second mode, the maximum dynamic pressure of the air discharged is within a range of 30 kPa to 65 kPa when the motor is driven at the maximum rotational speed.

A blower includes a motor that includes a shaft; an impeller; a motor housing; a blower housing that is disposed on an outer side of the impeller in a radial direction, and that opposes an outer surface of the motor housing in the radial direction with a gap therebetween; a circuit board that is disposed below the motor in an axial direction; and a circuit-board case that is disposed below the motor in the axial direction and that surrounds the circuit board. The circuit-board case includes a circuit-board-case inlet that communicate between an outer side and an inner side of the circuit-board case at an upper end portion of a circuit-board-case cylindrical portion that extends in a direction of a central axis.

A blower includes an impeller, a motor that rotates the impeller, an electronic component that is disposed below a stator in an axial direction, and a circuit board that is disposed below a motor housing in the axial direction. The motor housing includes a motor housing inlet that has a cylindrical shape extending in the axial direction, that extends below a lower end of a blower housing in the axial direction and surrounds an outer side of the electronic component in a radial direction, that is formed below the lower end of the blower housing in the axial direction, and that allows an inner side and an outer side of the motor housing in the radial direction to communicate with each other.

A fan has a motor, a fan impeller, a cooling body and a housing. The motor is electrically driven and has a stator and has a rotor which is mounted so as to be rotatable about an axis of rotation, wherein the motor has at least one winding through which an electrical current flows during operation. The fan impeller is fastened rotationally conjointly to the rotor and serves for drawing in and conveying a gaseous medium. The cooling body has an inner wall which delimits an interior space for accommodating the motor, and has air-guiding elements which extend in each case in an axial direction over a major part of the longitudinal extent of the winding, through which electrical current flows, in order to conduct the gaseous medium, which is conveyed by the fan impeller, along the cooling body for motor cooling purposes. The housing has an outer wall which delimits a cavity for accommodating the cooling body and the motor.

A motor includes a bearing holder for holding a bearing that rotatably supports a rotary shaft extending in the vertical direction, a bracket for holding the bearing holder, a circuit board having electronic components mounted thereon, and board fixing portions for fixing the circuit board to the bracket. The circuit board has a first region representing part of a mounting surface having the electronic components mounted thereon in the circumferential direction and a second region representing a region of the mounting surface other than the first region. The total weight of the electronic components mounted in the first region is greater than that in the second region. The number of the board fixing portions that fix the circuit board in the first region is greater than the number of the board fixing portions that fix the circuit board in the second region.

A motor includes a rotor including a rotary shaft that extends in the vertical direction, a stator that faces the rotor, a bearing for supporting the rotary shaft for rotation, a bearing holder for holding the bearing, a bracket for holding the bearing holder, and a circuit board having electronic components mounted thereon. The electronic components include a converter, an inverter, and a detection unit. The detection unit detects the rotation angle of the rotor on the basis of an induced voltage generated in the stator due to rotation of the rotor. The bracket includes a holding member that holds the lower end of the bearing holder. The circuit board is disposed under the holding member in the axial direction. The electronic components are disposed on the lower surface of the circuit board.