Stand-on Blower Powered Nozzle Angle Adjustment
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Solution Overview
Problem
Existing stand-on blowers have limited airflow directionality due to fixed nozzle configurations, requiring users to change the blower's travel direction to manage leaves and debris, and often suffer from plugged passages and inefficient airflow characteristics.
Innovation Solution
A stand-on blower with a fully powered nozzle that can adjust its angle horizontally by at least 180 degrees and vertically, featuring a nozzle positioning system with rotational and tilt actuators, allowing for flexible airflow direction and automatic angle reversal, along with a low-profile impeller housing and housing outlet duct configuration for enhanced airflow rates and velocities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple air outlets are positioned at different locations with separate gating, then airflow directionality is improved, but device complexity increases and geometric constraints create different airflow velocities and performance characteristics
Solution Approach 1:
The nozzle is made fully rotatable horizontally through at least 180 degrees and vertically adjustable, allowing dynamic repositioning of a single outlet to achieve multiple airflow directions. This eliminates the need for multiple fixed outlets with separate gating mechanisms, reducing structural complexity while maintaining directional versatility.
Solution Approach 2:
A single nozzle structure serves multiple functions by being rotatable to different horizontal angles and vertically adjustable, replacing what would traditionally require multiple dedicated outlets. Each position of the single nozzle provides the same airflow capability as multiple outlets would, simplifying the overall device.
2Device complexity
If fixed nozzle direction is used, then device complexity is reduced, but adaptability deteriorates as users must change blower travel direction to manage leaves in different directions
Solution Approach 1:
The nozzle transitions from a fixed configuration to a dynamic one that can be rotated horizontally through at least 180 degrees and adjusted vertically. This allows the airflow direction to be changed without moving the blower itself, providing adaptability in managing leaves and debris in various directions while maintaining relatively simple device architecture.
3Adaptability or versatility
If multiple discrete air outlets are used, then airflow direction control is improved, but performance efficiency deteriorates due to different airflow velocities and characteristics from each outlet
Solution Approach 1:
Instead of having multiple outlets with different fixed airflow characteristics, a single nozzle is made fully rotatable and vertically adjustable. This ensures that regardless of the directional position, the airflow velocity and characteristics remain consistent and optimized, as there is only one nozzle design rather than multiple variants with different performance traits.
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
Enables efficient and flexible debris management with adjustable airflow direction, reducing manual labor and improving airflow performance by allowing users to direct airflow without changing the blower's travel direction, while maintaining high airflow rates and velocities.
Implementation Method 1
an impeller that selectively receives power from the engine to create an airflow for moving leaves or other debris
Data Source
AI summary
A stand-on blower is provided that allows for fully powered nozzle angle adjustment. The blower may deliver an airflow for pneumatic cleanup tasks in different directions, including horizontal or left-right and vertical or up-down direction variability of the airflow. Position or angle of the blower's nozzle may be automatically reversed or driven to a rotational or angle limit upon demand.