Vacuum Cleaner Dust Bag Air Guide for Flat Bag Geometry
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Solution Overview
Problem
Conventional vacuum cleaner filter bags are limited in design, primarily using block-bottom shapes that restrict the use of non-woven filter media, which offer superior filtration properties, due to the need for stiff materials to maintain shape, and are not adaptable to various vacuum cleaner types.
Innovation Solution
A guide device with inclined inlet and outlet openings allows for a more flexible bag geometry, enabling the use of non-woven filter media and accommodating different vacuum cleaner designs, including flat bags without a block bottom, by guiding airflow effectively and allowing the bag to unfold and inflate suitably within the vacuum cleaner housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If block-bottom shape is used to maintain bag geometry, then structural stability is improved, but material flexibility deteriorates (cannot use non-woven filter media)
Solution Approach 1:
The invention divides the bag structure into two independent parts: a flexible non-woven filter media layer and a separate rigid guide device with block-bottom geometry. The guide device is detachably connected to the filter media via a holding plate, allowing each component to fulfill its specific function without compromising the other. This segmentation enables the use of non-woven materials while maintaining structural stability.
Solution Approach 2:
The holding plate serves as an intermediary component between the flexible filter media and the rigid guide device. It provides a connection interface that allows the flexible non-woven material to be attached to the rigid structure, enabling both material flexibility and geometric stability to coexist.
2Reliability
If non-woven filter media is used to improve filtration properties, then filter performance is improved, but structural stability deteriorates (cannot maintain block-bottom shape)
Solution Approach 1:
The invention separates the filtration function (performed by non-woven media) from the structural support function (performed by the rigid guide device). This allows non-woven materials to be used for optimal filtration without relying on them to maintain block-bottom geometry, as the rigid guide device provides the necessary structural stability.
3Reliability
If block-bottom geometry is designed for specific vacuum cleaner types, then compatibility with certain models is improved, but adaptability to various vacuum cleaner types deteriorates
Solution Approach 1:
The guide device with block-bottom geometry serves as a universal component that can be adapted to different vacuum cleaner types. The detachable connection system allows the same guide device to be used with various filter media and vacuum cleaner models, enhancing versatility while maintaining compatibility through standardized connection interfaces.
Data Source
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AI summary
Guiding device (13) comprises a hollow body for guiding the air stream from the intake (12) of the body to an outlet opening of the body. The body is connected to a vacuum cleaner filter bag so that an air stream from the outlet opening passes through the intake into the bag. The intake is arranged in a first plane and he outlet opening is arranged in a second plane so that the planes are inclined against each other by a predetermined angle. An independent claim is also included for a vacuum filter bag comprising a filter material and a guiding device. Preferred Features: The inner wall and/or the outer wall of the hollow body is arranged perpendicular to the first or second plane in a linear or curved manner. The hollow body is rigid or flexible.