Vacuum Dust Filter Bag With Auto-Unfolding Compressed Assembly
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Solution Overview
Problem
Dust filter bags for vacuum cleaners often require crumpling or folding to fit through the inlet section, leading to potential pinching, leakage, and incomplete unfolding, which can impair suction power and prevent the bag from reaching its maximum intake volume or filter surface.
Innovation Solution
A dust filter bag with a holding plate and a fixing device that allows the bag to be compressed and folded or rolled, maintaining the reduced dimensions for easy insertion, and automatically unfolds when the vacuum is operated due to negative pressure, utilizing a weak point or predetermined breaking point in the fixing device to release the compressed state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the dust filter bag is compressed or folded to fit through the inlet section, then the bag can be inserted into the vacuum cleaner, but the bag may be pinched by the filter chamber cover causing leakage air and reduced suction power
Solution Approach 1:
The dust filter bag is pre-compressed into a compact form with reduced external dimensions before insertion, allowing it to pass through the inlet section without pinching or deformation that would compromise sealing and suction power
Solution Approach 2:
The dust filter bag transitions from a compressed static state during insertion to an expanded dynamic state during operation, automatically adapting its volume to fill the filter chamber properly and maintain sealing without pinching
2Length of moving object
If the dust filter bag is compressed or folded to fit through the inlet section, then the bag can be inserted into the vacuum cleaner, but the bag may not unfold completely preventing maximum intake volume or filter surface
Solution Approach 1:
The dust filter bag is pre-compressed into a compact form with reduced external dimensions before insertion, allowing it to pass through the inlet section without pinching or deformation that would compromise sealing and suction power
Solution Approach 2:
The dust filter bag undergoes a parameter change from compressed state with reduced dimensions during insertion to expanded state with maximum volume and filter surface area during operation, ensuring both insertability and full functionality
3Ease of operation
If the dust filter bag is inserted in a folded or compressed state, then the bag can be easily inserted into the vacuum cleaner, but additional steps are required to remove the fixing device
Solution Approach 1:
The dust filter bag automatically unfolds itself when inserted into the vacuum cleaner, with the fixing device being removed or deactivated automatically during the insertion process or upon activation, eliminating the need for manual intervention
Solution Approach 2:
The manual mechanical action of removing the fixing device is replaced by an automatic mechanism that detects insertion and triggers fixing device removal or deactivation, simplifying the user operation
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
Ensures easy insertion and complete unfolding of the dust filter bag, maximizing suction power and filter surface area by allowing the bag to expand and fill the dust collection chamber effectively.
Implementation Method 1
following the restoring forces excited by the compression
Implementation Method 2
the pressure difference acting on the bag body when the vacuum cleaner is in operation, in that the filter chamber is subjected to negative pressure by the suction fan
Data Source
Figure 1~3
Figure 4~7
Figure 8~11
AI summary
The invention relates to a dust filter bag (1) for use in a vacuum cleaner. In order to create an improved dust filter bag, it is proposed that the dust filter bag have a compressed assembled state, the assembled state being fixed via a fixing device (13), the effect of which on the assembled state can be eliminated.