Vacuum Cleaner Filter Bag Fastening for Full Unfolding
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Solution Overview
Problem
Vacuum cleaner filter bags made of non-woven fabrics often fail to fully unfold in the limited installation space of vacuum cleaners, leading to reduced filtration efficiency, increased pressure loss, and shorter service life due to insufficient dust storage capacity.
Innovation Solution
A vacuum cleaner filter bag with a holding plate and a fastening device that allows part of the bag wall to be fixed in at least one spatial direction, ensuring better deployment and reducing the likelihood of clogging, thereby improving service life by maintaining a lower volume flow drop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter bag is folded for storage and insertion, then it can be conveniently stored and installed, but it cannot fully unfold in the limited installation space, reducing filtration efficiency and service life
Solution Approach 1:
The invention divides the fixation function into two independent parts: a holding plate for initial positioning and an additional fastening device for securing the unfolded state. This segmentation allows the filter bag to be both easily installed (folded state) and reliably maintained in an unfolded state, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
The holding plate is attached to the filter bag in advance during manufacturing, providing preliminary positioning capability. This preliminary action ensures that when the filter bag is inserted, it is immediately positioned correctly and can then be secured by the fastening device, maintaining both ease of installation and reliable filtration performance.
2Quantity of substance
If the filter bag is made larger to increase dust storage capacity, then service life is extended, but the installation space is exceeded, preventing proper deployment
Solution Approach 1:
The invention makes the filter bag dynamic by providing fixation points that allow it to transition from a folded insertion state to a fully unfolded operational state. The fastening device secures the bag in its expanded configuration, enabling the bag to achieve its full dust storage capacity within the limited installation space without permanent obstruction.
3Ease of operation
If the filter bag is fixed only at the holding plate, then it can be easily installed, but it may shift or fold improperly during operation, increasing pressure loss
Solution Approach 1:
The invention applies different fixation qualities to different parts of the filter bag: the holding plate provides basic positioning at one location, while the additional fastening device provides enhanced securing at another location. This local differentiation ensures the bag remains properly positioned throughout operation, maintaining volume flow and preventing improper folding that would increase pressure loss.
Data Source
Figure 1a~1b
Figure 2~4
Figure 5~7
AI summary
The bag (1) has a holding plate (4) connected with a bag wall (2) and staying in connection with a holding device of a vacuum cleaner. A fastener (6) i.e. clamping device, fastens a part of the bag wall in a region of the vacuum cleaner along a spatial direction, and includes a strip of material connected with the bag wall. Side walls of the bag wall are folded together along a direction of an upper side of the side wall on which a holding plate is arranged. The fastening device includes a hook and/or a pin that are connected with the bag wall. The strip of material comprises a nonwoven material, paper and/or cardboard.