Integrated Drain Filter Housing for Washing Pump Protection
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Solution Overview
Problem
Existing draining devices for washing machines are not efficiently designed to protect the pump wheel from harmful objects and are costly to manufacture and assemble, with filters often requiring complex mounting and sealing processes.
Innovation Solution
A draining device with a filter element and pump wheel housing formed from the same thermoplastic material, where the pump wheel housing is integral with the filter, providing protection and simplifying assembly, and allowing for a tight seal with a pump flange, and a filtering section within the conduit to prevent objects from reaching the pump wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate filter and pump wheel housing are used, then assembly flexibility is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent merges the filter element and pump wheel housing into a single integral component made from one thermoplastic material. This combination eliminates the need for separate manufacturing and assembly steps, reducing both manufacturing cost and assembly complexity while maintaining the protective and filtering functions of both components
2Reliability
If complex sealing processes are used, then seal tightness is improved, but manufacturing time and cost increase
Solution Approach 1:
By integrating the pump wheel housing with the filter element as a single molded part, the patent eliminates separate sealing operations between two components. The integral design ensures inherent seal tightness through the molded joint, while significantly reducing assembly time and improving productivity
3Device complexity
If integral design is used, then assembly is simplified, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes thermoplastic material properties and injection molding parameters to achieve the integral design. By controlling material flow, cooling rates, and mold design, the manufacturing process achieves the required precision for the integrated filter-pump housing without excessive complexity
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
This design effectively protects the pump wheel from harmful objects, simplifies the manufacturing and assembly process, and ensures a cost-effective and efficient operation by integrating the pump wheel housing with the filter element, enhancing the overall efficiency and reliability of the draining process.
Implementation Method 1
a pump drive for driving the pump wheel in a rotational movement about a central axis as rotational axis
Implementation Method 2
a filter element (76) having a filtering section (77) for filtering out objects of certain dimensions and/or size from the drained washing liquid
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
According to the invention a draining device (7) for draining washing liquid from a tub interior (9) of a washing tub (2) of a washing machine, is suggested a) the draining device (7) comprising a draining conduit (75) and a draining pump (70) and a filter element (76) having a filtering section (77) for filtering out objects (110) of certain dimensions and/or size from the drained washing liquid, b) the draining pump (70) having at least one pump wheel (72) arranged within a pump wheel housing (73) and a pump drive (71) for driving the pump wheel (72) in a rotational movement about a central axis (A) as rotational axis, c) wherein the filter element (76) is arranged within the draining conduit (75) and d) wherein the pump wheel housing (73) is formed integral with the filter element (76) or the filtering section (77).