Blower
AssigneeMakita Corporation
InventorFumitoshi Numata
Life of this patent
Estimating the term…
Abstract
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.
Claims16
A blower comprising:
- a body having an inlet opening and a discharge opening;
- a motor assembly housed in the body;
- and
- a seal disposed between the body and the motor assembly,
- wherein:
- the motor assembly comprises:
- a case that has a first opening and a second opening;
- a motor that includes (i) a stator supported within the case, (ii) a rotor and (iii) a motor shaft configured to rotate integrally with the rotor around a rotational axis that defines a front-rear direction of the blower;
- a fan that is fixed to the motor shaft within the case and is configured to rotate integrally with the motor shaft;
- and
- at least one bearing that is supported within the case and rotatably supports the motor shaft, and
- the seal is configured to partition a space formed between the body and the motor assembly into (i) a first space communicating with the inlet opening and the first opening and (ii) a second space communicating with the second opening and the discharge opening.
Dependencies are inferred from the claim text.