Induction Coil Fixation for Vibration-Resistant Laundry Drum Heating
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Solution Overview
Problem
Conventional laundry treatment apparatuses using induction heating face issues with the secure fixation of coils due to vibrations, leading to potential disconnection and fatigue failure, and existing solutions do not effectively minimize lead wire resistance or increase coil efficiency.
Innovation Solution
A laundry treatment apparatus with a base housing that includes a fixing rib to securely wind and fix the coil, utilizing two lead wires drawn in the same direction to minimize spacing and resistance, and a configuration that prevents interference and disconnection by routing the wires through specific penetrated portions and holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coil is fixed to the tub using a structure to accommodate it, then the coil can be securely mounted, but vibration transmitted to the tub causes the coil to be lifted or dislodged
Solution Approach 1:
The base housing is divided into multiple functional components: a base body for mounting, a fixing rib for coil attachment, and penetrated portions for wire routing. This segmentation allows each component to address specific issues - the fixing rib secures the coil while the penetrated portions protect lead wires from vibration damage
Solution Approach 2:
The base housing acts as an intermediary structure between the tub and the coil assembly. It provides a stable mounting platform that isolates the coil from direct vibration transmission to the tub, while the fixing rib and penetrated portions mediate the connection and protection functions separately
2Reliability
If the lead wires are routed through the base housing, then the connection to the controller is established, but vibration phase difference between the structure and controller causes continuous friction on the wire surface leading to fatigue failure
Solution Approach 1:
The lead wires are routed through the base housing structure before connecting to the controller. This preliminary routing through the protected pathway prevents the wires from being exposed to external vibration and friction during operation, addressing the fatigue issue before it occurs
Solution Approach 2:
The base housing serves as a protective intermediary for the lead wires, shielding them from vibration-induced friction. The penetrated portions provide a controlled pathway that mediates between the electrical connection requirement and the protection from mechanical stress
3Productivity
If the wire is wound around the fixing rib, then the coil area and number of turns are increased, but the wire length increases leading to higher resistance
Solution Approach 1:
The wire routing is optimized with different sections serving different functions: the coil winding section around the fixing rib maximizes area and turns for heating efficiency, while the lead wire sections are minimized in length and routed through the base housing to reduce resistance. Each local section has optimized properties for its specific function
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 securely fixes the coil, reduces the risk of damage and disconnection, minimizes lead wire length, and increases the number of coil turns and area, enhancing efficiency and reliability.
Implementation Method 1
an induction module configured to inductively heat the drum, wherein the induction module includes a coil formed by winding a wire
Implementation Method 2
laundry treatment apparatuses using induction heating as new heating means have been developed
Data Source
AI summary
A laundry treatment apparatus is disclosed. The laundry treatment apparatus includes a cabinet, a tub arranged in the cabinet, a drum arranged in the tub and formed of a metal material, and an induction module configured to inductively heat the drum, wherein the induction module includes a coil formed by winding a wire, and a base housing including a base body arranged on the tub, and a fixing rib arranged on the base body to fix the coil, wherein the wire is drawn into the base body in one direction, wound around the fixing rib, and drawn out of the base body in the same direction.