Vacuum Cleaner Split Airflow Channel to Reduce Deflection Noise
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Solution Overview
Problem
Existing vacuum cleaners face challenges in reducing flow noise and resistance while maintaining laminar air flow, which affects dust pick-up efficiency and manufacturing complexity.
Innovation Solution
A vacuum cleaner design featuring an air flow channel with a dividing wall that protrudes into the air flow deflection section, minimizing vortex formation and enhancing laminarity, thereby reducing noise and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the air flow channel is deflected by a deflection angle out of a plane of the flow channel, then the air flow direction is changed, but flow noise and flow resistance increase due to vortex formation
Solution Approach 1:
The air flow channel is divided into multiple partial channels by partition walls, which segment the airflow path. This segmentation allows each partial channel to be optimized for laminar flow, reducing vortex formation during deflection while achieving the required direction change.
Solution Approach 2:
The partition walls extend into the deflection section from the channel plane, creating a three-dimensional flow structure. This dimensional extension guides the airflow smoothly through the deflection angle while maintaining laminar flow characteristics and minimizing turbulence.
2Stability of the object's composition
If the air flow channel is divided into multiple partial channels by partition walls, then laminar flow is enhanced, but device complexity increases
Solution Approach 1:
The partition walls are integrated directly into the housing structure of the vacuum cleaner, merging the flow control function with the existing housing. This eliminates the need for separate components and reduces overall device complexity while maintaining laminar flow stability.
Solution Approach 2:
The housing structure serves multiple functions: it provides structural support, defines the airflow path, and incorporates partition walls for flow control. This multi-functionality reduces the number of separate components needed, simplifying the device while enhancing flow stability.
3Object-generated harmful factors
If the partition wall protrudes into the deflection section, then vortex formation is reduced, but manufacturing complexity increases
Solution Approach 1:
The partition walls are formed as integral parts of the housing structure, combining the housing and flow control elements into a single manufactured component. This integration simplifies manufacturing by reducing the number of parts and assembly steps while achieving vortex reduction.
Solution Approach 2:
The partition walls are designed with optimized dimensions and positioning parameters that allow them to effectively reduce vortex formation while maintaining compatibility with standard manufacturing processes. The parameters are tuned to achieve flow control without requiring complex or precision manufacturing.
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 design achieves significant noise reduction and increased air conveyance, improving dust pick-up efficiency and simplifying manufacturing.
Implementation Method 1
the air flows through the channel in a substantially laminar manner
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The vacuum cleaner has an airflow channel (4) that adjoins the airflow detour portion (5) and directs the airflow. A partition wall (7) divides the airflow channel into two parallel running sub channels. The partition wall is projected into the airflow detour portion. The airflow channel is divided into sub channels of equal cross sectional area.