A laundry washing machine
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Solution Overview
Problem
Existing washing machines with wireless power transmission systems face issues such as the need for waterproofing of the wireless power receiver unit, difficulty in maintenance and replacement due to its internal positioning, and reduced internal space for laundry.
Innovation Solution
Positioning the wireless power receiver unit outside the washing tub, allowing it to be easily accessible for maintenance and not requiring specific waterproofing, while maintaining efficient power transmission to the washing drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless power receiver unit is positioned inside the washing tub, then power transmission is achieved, but waterproofing complexity increases and maintenance difficulty increases
Solution Approach 1:
The wireless power receiver unit is extracted from the interior of the washing tub and repositioned on the external surface of the tub wall. This extraction eliminates the need for waterproofing the receiver unit while maintaining its power reception function, and significantly improves accessibility for maintenance and replacement operations.
2Reliability
If the wireless power receiver unit is positioned inside the washing tub, then power transmission is achieved, but internal space for laundry is reduced
Solution Approach 1:
The receiver unit is extracted from the interior space of the washing tub and relocated to the external surface. This removes the volume occupied by the receiver unit from the laundry capacity calculation, thereby increasing the effective internal space available for washing clothes while preserving the wireless power transmission capability.
3Reliability
If the wireless power receiver unit is positioned inside the washing tub, then power transmission is achieved, but waterproofing requirements increase
Solution Approach 1:
The receiver unit is extracted from the wet environment inside the washing tub and positioned on the dry external surface. This eliminates the need for waterproof sealing of the receiver unit itself, reducing the waterproofing complexity to only the tub wall structure while maintaining reliable wireless power transmission across the wall boundary.
4Reliability
If the wireless power receiver unit is positioned inside the washing tub, then power transmission is achieved, but accessibility for maintenance is reduced
Solution Approach 1:
The receiver unit is extracted from the enclosed interior of the washing tub and mounted on the externally accessible surface of the tub wall. This positioning allows technicians to easily access, inspect, maintain, and replace the receiver unit without disassembling the washing tub or drum, significantly improving operational ease while maintaining power transmission reliability.
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
Enables easy maintenance and replacement of the wireless power receiver unit without reducing the internal space for laundry, eliminating the need for waterproofing and improving overall system accessibility.
Implementation Method 1
a wireless power transmitting system comprising a wireless power transmitter unit, mounted in/on the washing tub, electrically connected to an electrical system of the washing machine and arranged for wireless transmitting electric power to a wireless power receiver unit
Data Source
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AI summary
The present invention is related to a laundry washing machine (10) comprising: • - a cabinet (20); • - a washing tub (30) housed inside the cabinet (20) and comprising a tubular wall (31) closed at one end by an end wall (32); • - a washing drum (40), rotatably housed within the washing tub (30), comprising a tubular mantle (41) rotatable with respect to a rotation axis (Ax), a first end of the tubular mantle (41) being closed, at least partially, by a flange (42) facing the end wall (32) of the washing tub (30); • - a shaft (50) protruding from the flange (42) towards the end wall (32) and passing through the latter, so that a free end (51) thereof protrudes and/or is accessible from an external face (320) of the end wall (32) facing away from the flange (42); • - a driving system (70) comprising an operating module (71), mounted on the washing tub (30), and an operated module (72) fixed to the free end (51) of the shaft (50), the operating module (71) being configured for rotating the operated module (72) with respect to the washing tub (30); • - one or more electric loads (80) mounted in/on the washing drum (40); • - a wireless power transmitting system (600) comprising a wireless power transmitter unit (62), mounted in/on the washing tub (30), electrically connected to an electrical system (90) of the laundry washing machine (10) and arranged for wireless transmitting electric power to a wireless power receiver unit (63) configured for supplying electric power to the one or more electric loads (80), wherein the wireless power receiver unit (63) is mounted in/on the operated module (72).