Striking-Type HEPA Filter Self-Cleaning for Sustained Vacuum Suction
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Solution Overview
Problem
Vacuum cleaners face reduced suction performance due to rapid dust accumulation on HEPA filters, leading to blocked air permeability, and issues with heat dissipation and noise in air duct assemblies.
Innovation Solution
An HEPA apparatus self-cleaned by striking, where a striking mechanism continuously shakes off dust from the HEPA filter, combined with an optimized air duct layout for improved inlet air flow, noise reduction, and enhanced heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HEPA filter is used for dust filtration, then dust removal performance is improved, but air permeability decreases over time due to dust accumulation
Solution Approach 1:
The patent employs a striking mechanism that generates mechanical vibrations to shake and remove accumulated dust from the HEPA filter surface. The striking assembly includes a striking member that periodically impacts the filter, creating vibrations that dislodge dust particles and restore air permeability without requiring filter replacement or manual cleaning.
Solution Approach 2:
The striking mechanism is designed to automatically clean the HEPA filter during the vacuum cleaner's operation. The dust removal mechanism is integrated into the filter assembly and operates autonomously, using the vacuum's own motor-driven airflow and mechanical components to perform the cleaning function without external intervention.
2Power
If motor operates at high speed to generate negative pressure, then dust suction ability is improved, but heat dissipation becomes insufficient and noise increases
Solution Approach 1:
The patent introduces a dedicated heat dissipation chamber that is spatially separated from the motor compartment. This dimensional separation allows hot air to be channeled through a specific pathway away from the motor, improving thermal management without compromising the motor's high-speed operation and suction performance.
Solution Approach 2:
The heat dissipation function is extracted as a separate subsystem from the motor assembly. The heat dissipation chamber and airflow passage are designed as independent components that specifically address thermal management, allowing the motor to operate at optimal speeds without being constrained by heat accumulation or noise issues.
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
Maintains long-term air permeability of the HEPA filter, ensuring strong suction ability, reduces noise, and improves heat dissipation in vacuum cleaners.
Implementation Method 1
a striking mechanism for continuously striking one side of the HEPA filter to shake off dust accumulated on the surface of the HEPA filter
Implementation Method 2
blades are driven by a motor to rotate at high speed, and negative pressure is generated in a hermetical shell to suck dust on carpets, floors, walls and other objects
Data Source
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AI summary
A striking-type HEPA self-cleaning apparatus and a vacuum cleaner having the self-cleaning apparatus, said self-cleaning apparatus comprising: a mounting cover (15) an inner part of which is provided with a certain accommodation space and a bottom part of which is opened to form a ventilation opening, a HEPA filter (17) that is connected to the bottom part of the mounting cover (15) and that seals the ventilation opening, and a striking assembly (14) that is disposed within the accommodation space; the striking assembly (14) comprises a striking driver (141) and at least one set of striking hammers (143) that is in transmission connection with the driver (141); the striking hammers (143) are located directly above the HEPA filter (17), and under the drive of the driver (141), the striking hammers (143) periodically strike an upper surface of the HEPA filter (17); as such, the HEPA filter (17) of the vacuum cleaner is able to retain a sufficient degree of air permeability for a long period of time or be restored to a sufficient degree of air permeability, thus ensuring that the vacuum cleaner retains a stronger suction force. By means of a suitable spatial arrangement, the vacuum cleaner achieves the effects of enhancing heat dissipation and reducing noise; and by means of performing a manner of alternating wind blowing and wind suction for the HEPA filter (17), dust accumulated on a surface of the HEPA filter (17) may be blown off.