Leaf Blower

Overview

A leaf blower clears leaves and debris by accelerating a large volume of air into a fast jet. This model is a cordless handheld unit built around a brushless motor and a removable lithium-ion pack. The motor spins an axial impeller that draws air through a guarded inlet and forces it through a scroll housing and out a tapered nozzle.

The Power Unit pairs a BLDC Motor with a Motor Controller. The motor is an outrunner BLDC unit with a wound stator and a permanent-magnet rotor; the controller is a three-phase inverter board whose Power MOSFET Stage commutate the windings under MCU control, setting motor speed from the trigger signal. DC power comes from the Battery Pack, a series-parallel array of 18650 cells managed by a BMS board for protection and balancing.

How it works

The motor shaft drives the Impeller Assembly. A glass-filled nylon Impeller (Fan) sits inside a Volute Housing, a spiral scroll that raises air velocity as the flow moves toward the outlet. A retaining nut clamps the impeller to the shaft. Working air enters through the Intake Assembly: a slotted grille keeps fingers and large debris out, and a reusable foam filter keeps dust off the impeller and motor.

The accelerated air exits through the Blower Tube Assembly, a rigid tube ending in a tapered nozzle that narrows the stream to raise exit speed. A flat concentrator attachment can be fitted for stubborn wet debris.

Construction

The operator commands speed from the Handle Assembly: a variable-speed trigger sets output proportional to travel, and a cruise dial holds a set speed without holding the trigger. The powerhead is enclosed by the Housing, two moulded clamshell halves carried on rubber anti-vibration mounts that damp motor and impeller vibration into the grip. Power and trigger signals run between the battery, controller, motor, and trigger through the Internal Wiring harness.