Blower
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Solution Overview
Problem
Conventional blowers generate a single airflow direction, causing discomfort due to rearward pushing force and inadequate blowing of leaves, as they tend to adhere to the ground.
Innovation Solution
A blower design featuring an airflow guiding assembly with an air duct and airflow guiding member that deflects airflow from a central axis, creating a composite airflow with annular and central air-out areas, reducing user fatigue and improving blowing efficiency by dispersing reaction force and allowing airflow from various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single airflow direction is used in conventional blowers, then the structure is simple, but the user experiences discomfort due to rearward pushing force and the blowing effect is insufficient for leaves
Solution Approach 1:
The air outlet is segmented into multiple regions (central air outlet and annular air outlet) with different airflow directions. The central air outlet provides straight airflow for general blowing tasks, while the annular air outlet provides deflected airflow at angles to reduce rearward pushing force on the user's wrist, thereby improving user comfort without excessive structural complexity
Solution Approach 2:
The invention transitions from a single-dimensional straight airflow to multi-dimensional airflow by adding deflected airflow paths. The airflow guiding member creates both straight airflow (along the axis) and deflected airflow (at angles to the axis), enabling the blower to handle leaves more effectively while distributing reaction forces across different directions
2Productivity
If a single airflow direction is used, then the device structure is simple, but leaves tend to adhere to the ground and cannot be blown easily
Solution Approach 1:
The air outlet is segmented into multiple regions (central air outlet and annular air outlet) with different airflow directions. The central air outlet provides straight airflow for general blowing tasks, while the annular air outlet provides deflected airflow at angles to reduce rearward pushing force on the user's wrist, thereby improving user comfort without excessive structural complexity
Solution Approach 2:
The invention transitions from a single-dimensional straight airflow to multi-dimensional airflow by adding deflected airflow paths. The airflow guiding member creates both straight airflow (along the axis) and deflected airflow (at angles to the axis), enabling the blower to handle leaves more effectively while distributing reaction forces across different directions
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 enhances operational comfort by reducing fatigue and improves the blowing effect, enabling easier removal of thin objects like leaves by dispersing the reaction force and increasing air speed while maintaining straight airflow output.
Implementation Method 1
a fan for generating the airflow in the main machine air channel
Implementation Method 2
a first airflow guiding section having an annular air-out area for generating a cyclone at a periphery thereof and a central air-out area for outputting a straight airflow at the center of the annular air-out area
Data Source
AI summary
A blowing machine has a main machine where the main machine includes a housing, a motor and a fan with the housing having a main machine air channel in which the motor and the fan are at least partially accommodated. An airflow guiding assembly is attachable to the housing and has an air duct for guiding the airflow and an airflow guiding member for guiding a part of the airflow in the air duct to flow in a direction deflecting from the first axis.