Vacuum cleaner and mold device
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Solution Overview
Problem
Existing vacuum cleaners face challenges in maintaining an effective air filtering function while ensuring a large passage area for air, leading to reduced filter durability and increased material waste due to separate support members.
Innovation Solution
A filter member with integrated first and second filter parts of varying thicknesses, supported by a frame, is manufactured using a mold device with distinct forming parts and thermal conductivity differences to maintain rigidity and filtering efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the passage area of air in the filter is increased, then air filtering function is improved, but filter durability is reduced
Solution Approach 1:
The filter member employs varying thickness throughout its structure, with thicker regions at critical stress points and thinner regions in areas requiring flexibility. This local differentiation of material properties allows the filter to maintain large passage areas for air flow while reinforcing durability at structurally critical locations
Solution Approach 2:
The filter member is constructed as an integrated composite structure combining different thickness zones within a single piece, eliminating the need for separate support members. This composite approach allows optimization of both air passage area and structural durability within a unified filter design
2Area of stationary object
If a filter sheet with large passage area is used, then air filtering function is improved, but material waste increases
Solution Approach 1:
The filter member integrates multiple functions (filtration, support, and structural reinforcement) into a single unified component. By merging the support function directly into the filter member itself rather than using separate support members, the design eliminates excess material usage and reduces waste while maintaining large air passage areas
Solution Approach 2:
The thickness parameter of the filter member is varied strategically across different regions. Thicker sections provide structural support where needed, while thinner sections reduce material consumption in areas where full thickness is unnecessary, optimizing the balance between performance and material efficiency
3Stability of the object's composition
If separate support members are used, then filter structure is stabilized, but device complexity increases
Solution Approach 1:
The support function is merged directly into the filter member by creating an integrated structure with varying thickness. This eliminates the need for separate support members, simplifying the overall filter assembly while maintaining structural stability through the strategically designed thickness distribution within the unified filter component
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 solution enhances air filtering efficiency, increases the filterable area, reduces material waste, and simplifies manufacturing processes by integrating support structures, thus improving user convenience and reducing production costs.
Implementation Method 1
the bent part may be molded by compressing a region of the filter member by heat
Data Source
AI summary
A vacuum cleaner comprises: a suction part for suctioning external air; a discharge part through which the sucked air is discharged to the outside; a frame along a flow path between the suction part and the discharge part; and a filter including a filter member which is supported by the frame and which separates dust from the suctioned air, wherein the filter member includes: a first filter part spaced from and to be parallel with an opening formed in the frame; a second filter part having one side supported by the frame and another side extended from the one side thereof toward the edge of the first filter part; and a bent part between the edge of the first filter part and the other side of the second filter part, and the thickness of the first filter part or the second filter part is different from the thickness of the bent part.