Battery-powered debris blower
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional debris blowers, particularly gas-powered and handheld battery-operated models, face issues with noise, air pollution, high operating costs, and limited runtime due to small batteries, making them unsuitable for commercial use.
Innovation Solution
A battery-powered debris blower designed for mounting on a vehicle, featuring a centrifugal fan assembly with angled vanes and an outrunner motor, which reduces noise and increases runtime while being quieter and more efficient than traditional gas-powered blowers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If gas-powered 2-cycle engines are used in debris blowers, then power and portability are improved, but noise levels increase to 75-84 db and air pollution is generated
Solution Approach 1:
The patent replaces the gas-powered 2-cycle engine with an electric motor system. Specifically, it uses a high-torque electric motor (such as a brushless DC motor or outrunner motor) that can deliver the necessary power for debris blowing without the combustion process that generates noise and pollution. This substitution eliminates exhaust emissions and significantly reduces noise levels while maintaining adequate blowing power for commercial applications.
Solution Approach 2:
The patent changes the operating parameters by using electric power instead of gasoline. This involves selecting motor specifications (voltage, current, torque, RPM) that can match or exceed the performance of small gas engines while operating in a quieter, emission-free manner. The motor is paired with appropriately sized fans or impellers to achieve the required air movement (CFM) and velocity (MPH) for effective debris removal.
2Weight of moving object
If small battery packs are used in handheld cordless blowers, then portability is improved, but runtime is limited to 9-12 minutes at top speed
Solution Approach 1:
The patent transitions from handheld to vehicle-mounted operation, which fundamentally changes the weight constraint dimension. By mounting the blower on a vehicle (using vehicle battery power and structural support), the system can accommodate much larger battery packs and heavier components without compromising portability, since the vehicle bears the weight. This allows for extended runtime while maintaining the ability to be deployed as needed.
Solution Approach 2:
The patent designs a vehicle-mounted blower system that can serve multiple functions and operate for extended periods. The larger battery capacity enables not only prolonged runtime but also higher power output sustained over longer durations. The system can be easily installed and removed from various vehicles, providing versatile, long-duration debris removal capability for commercial landscaping operations.
3Duration of action of moving object
If vehicle-mounted design is used, then runtime and power are improved, but device complexity and mounting requirements increase
Solution Approach 1:
The patent divides the blower system into separate, modular components: the blower assembly itself, the mounting bracket system, the battery integration components, and the control system. This segmentation allows each component to be optimized independently and simplifies installation and maintenance. The mounting brackets can be attached to various vehicle frames, and the battery can be connected to the vehicle's electrical system, reducing overall system complexity while enabling vehicle-mounted operation with extended runtime.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a quieter and more efficient debris removal with reduced noise levels and extended runtime, addressing the limitations of existing technologies by delivering 500 CFM at 150 mph with less than 60 db noise and running over 90 minutes on a single charge.
Implementation Method 1
A motor includes a stator and a motor shaft rotatable with respect to the stator... The motor shaft is connected to the fan assembly, so as to rotate the fan assembly within the fan frame, and thus move air from the air inlet to the air outlet
Implementation Method 2
A fan assembly is positioned within the fan frame, the fan assembly having a back ring and a front ring, those two rings being spaced apart from each other by a plurality of vanes, each vane angled and curved the same as all the other vanes with respect to the center of the back ring
Data Source
AI summary
A debris blower, having a fan frame, with a back plate and a motor plate, the back plate and motor plate being connected to and separated by a side wall. A fan assembly is positioned within the fan frame, and is rotated by a motor. A controller is electrically connected to the motor and to a battery pack, to energize the motor. A vehicle mounting plate is connected to a vehicle, and a blower mounting plate is connected to the fan frame, so as to removably connect the blower to the vehicle. A mounting tube is connected to the vehicle mounting plate. The blower mounting plate includes at least one hook for connecting with the mounting tube. The blower mounting plate may further include flange extensions to contact the vehicle mounting plate. The direction of the outlet of the blower can be remotely controlled by the operator.