Folded Vacuum Cleaner Bag Walls for Dynamic Volume Expansion
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Solution Overview
Problem
Existing vacuum cleaner bags have limited capacity and are inefficient in terms of volume utilization, particularly in tubular chambers, and current manufacturing methods do not effectively enhance this capacity.
Innovation Solution
A vacuum cleaner bag design featuring two bag walls made of filter material with folds fixed by seams on one side, connected via side seams, and a folded edge on the opposite side, allowing for partial or complete unfolding to increase volume, made from a single or multi-layer nonwoven material with optional mechanical fastening for compact transport and expansion under negative pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vacuum cleaner bag is designed with a fixed structure to maintain shape during transport, then the structural stability is improved, but the usable volume during use is limited
Solution Approach 1:
The bag wall is designed with movable folds that can transition between a compact folded state during transport and an expanded unfolded state during use. The fold is secured at one end by a seam but remains movable at the fold edge, allowing dynamic volume adjustment based on operational requirements.
2Volume of stationary object
If the vacuum cleaner bag is designed with folds that can be unfolded to increase volume, then the usable volume is improved, but the structural stability during transport deteriorates
Solution Approach 1:
The bag wall is segmented into multiple sections by introducing folds that can be selectively unfolded. The fold is fixed at one end by a seam, creating segmented regions that can independently adjust their configuration, allowing the bag to maintain structural integrity while enabling volume expansion.
3Volume of stationary object
If the vacuum cleaner bag is manufactured with multiple separate components to allow volume adjustment, then the usable volume is improved, but the manufacturing complexity increases
Solution Approach 1:
The fold structure is integrated directly into the bag wall as a continuous element, eliminating the need for separate movable components. The fold is formed by folding the bag wall itself and securing it with a seam, merging the volume-adjustment mechanism with the bag wall structure to simplify 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 significantly increases the usable volume of the vacuum cleaner bag during use while maintaining a compact shape for transport, effectively adapting to the vacuum cleaner chamber and optimizing volume utilization.
Implementation Method 1
After the vacuum cleaner bag is inserted, it can expand due to negative pressure on the side opposite the inlet opening
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
A vacuum cleaner bag (1, 1') comprises two bag walls (2, 3) formed from filter material, enclosing an interior space. Each bag wall (2, 3) has at least one fold (4, 4', 5, 5') which is fixed on one side by a seam (6, 6', 7, 7'). An inlet opening (11) is formed on the side with the seams (6, 6', 7, 7') for fixing the at least one fold (4, 4', 5, 5'). The bag walls (2, 3) are connected to each other on two opposite sides by side seams (9). On the side opposite the inlet opening (11), the bag walls (2, 3) are connected to each other via a folded edge (8). The invention further relates to an effective method for manufacturing such a vacuum cleaner bag (1, 1').