Folded Upright Vacuum Filter Bag for Full Unfolding
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Solution Overview
Problem
Upright vacuum cleaner filter bags made of non-woven fabrics often fail to fully unfold when inserted into the vacuum cleaner, leading to kinking, reduced dust storage capacity, and a shorter service life due to incomplete unfolding and clogging.
Innovation Solution
A vacuum cleaner filter bag design with a length-to-width ratio greater than 1.5, featuring a first bag wall with longitudinal folds and a retaining plate that allows for complete unfolding upon insertion, ensuring the bag is fully expanded before use, and optionally incorporating additional folds for increased filtration area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat non-woven filter bag is used in an upright vacuum cleaner, then the filter bag can be easily manufactured and installed, but it fails to fully unfold, causing kinking and reduced service life
Solution Approach 1:
The filter bag is pre-formed with a three-dimensional shape including longitudinal folds and a curved bottom surface before installation. This preliminary shaping ensures that the bag automatically unfolds completely when inserted into the vacuum cleaner, preventing kinking and ensuring full operational service life without requiring any additional unfolding action during installation.
Solution Approach 2:
The filter bag incorporates longitudinal folds that allow dynamic expansion from a compact storage state to a fully expanded operational state. The folds enable the bag to adapt its shape during insertion, transitioning from a flat packaged form to a three-dimensional expanded form that fits the collection vessel optimally.
2Ease of operation
If a flat non-woven filter bag is inserted into the vacuum cleaner, then installation is simple, but the bag does not unfold completely, leading to kinking and reduced dust storage capacity
Solution Approach 1:
The filter bag is pre-formed with a three-dimensional shape including longitudinal folds and a curved bottom surface before installation. This preliminary shaping ensures that the bag automatically unfolds completely when inserted into the vacuum cleaner, preventing kinking and ensuring full operational service life without requiring any additional unfolding action during installation.
Solution Approach 2:
The filter bag transitions from a two-dimensional flat structure to a three-dimensional expanded structure through pre-formed longitudinal folds and a curved bottom surface. This dimensional transformation allows the bag to maximize its dust storage capacity within the collection vessel while maintaining simple installation procedures.
3Ease of manufacture
If a flat non-woven filter bag is used, then manufacturing is straightforward, but the bag becomes clogged during prolonged operation due to incomplete unfolding
Solution Approach 1:
The filter bag is pre-formed with a three-dimensional shape including longitudinal folds and a curved bottom surface before installation. This preliminary shaping ensures that the bag automatically unfolds completely when inserted into the vacuum cleaner, preventing kinking and ensuring full operational service life without requiring any additional unfolding action during installation.
Solution Approach 2:
The filter bag incorporates longitudinal folds that allow dynamic expansion from a compact storage state to a fully expanded operational state. The folds enable the bag to adapt its shape during insertion, transitioning from a flat packaged form to a three-dimensional expanded form that fits the collection vessel optimally.
4Volume of stationary object
If the filter bag is made larger to increase dust storage capacity, then the volume is increased, but the bag cannot be fully utilized in the upright vacuum cleaner due to space constraints
Solution Approach 1:
The filter bag is pre-formed with a three-dimensional shape including longitudinal folds and a curved bottom surface before installation. This preliminary shaping ensures that the bag automatically unfolds completely when inserted into the vacuum cleaner, preventing kinking and ensuring full operational service life without requiring any additional unfolding action during installation.
Solution Approach 2:
The filter bag transitions from a two-dimensional flat structure to a three-dimensional expanded structure through pre-formed longitudinal folds and a curved bottom surface. This dimensional transformation allows the bag to maximize its dust storage capacity within the collection vessel while maintaining simple installation procedures.
Data Source
Figure 1
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Figure 2b
AI summary
The present invention relates to a vacuum cleaner filter bag for an upright vacuum cleaner. The vacuum cleaner filter bag according to the invention has a greater length than width, resulting in a long side and a short side. It is formed by two bag walls that are connected to each other around their circumference, so that an interior space is formed between the two bag walls. One bag wall has an inlet opening through which air to be cleaned can flow into the vacuum cleaner filter bag.The vacuum cleaner filter bag according to the invention is characterized in that the bag wall in which the inlet opening is provided has a fold extending in the longitudinal direction of the vacuum cleaner filter bag, whereby this bag wall has increased flexibility and the vacuum cleaner filter bag opens when the retaining plate is folded over when the filter bag is inserted into a vacuum cleaner in such a way that the air can enter the filter bag essentially unhindered.