Drum Washer Drive Layout for Multi-Mode Agitator Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drum washing machines with impellers have inefficient washing modes due to high load on planetary gear mechanisms, leading to reduced power transmission efficiency and shorter service life, and lack versatility in washing modes.
Innovation Solution
A drum washing machine design featuring a planetary gear assembly that switches between states to rotate the agitator and drum in the same or opposite directions, combined with a brake system for controlling the gear assembly, allowing for various washing modes and direct power transmission to handle the load of the drum and laundry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a planetary gear mechanism is used to drive both the drum and impeller, then the washing machine can achieve different washing modes, but the planetary gear mechanism experiences high load which reduces power transmission efficiency and service life
Solution Approach 1:
The patent divides the drive system into two independent paths: the motor directly drives the drum through a transmission mechanism, while simultaneously driving the impeller through a separate planetary gear assembly. This segmentation reduces the load on the planetary gear mechanism by eliminating the need to drive the heavy drum through gears, thereby improving reliability and service life while maintaining washing mode versatility.
2Device complexity
If the planetary gear mechanism drives the drum directly, then the structure is simplified, but the load on the gear mechanism increases significantly affecting power transmission
Solution Approach 1:
The drive system is segmented into two functional paths: a direct drive path for the drum and a gear-driven path for the impeller. The motor connects to both paths independently, allowing the drum to be driven directly without passing through the planetary gear mechanism. This maintains structural simplicity while ensuring the planetary gears only handle the lighter impeller load, preserving power transmission efficiency.
3Device complexity
If a single washing mode is used, then the structure is simple, but the washing effect is affected and washing time cannot satisfy quick washing requirements
Solution Approach 1:
The patent implements a dynamic washing system where the impeller can rotate in multiple directions (clockwise, counterclockwise, and bidirectional) while the drum rotates in a fixed direction. This dynamic capability allows the washing machine to switch between different washing modes (standard wash, quick wash, delicate wash) without complicating the overall structure, thereby improving washing efficiency and satisfying diverse user needs.
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 design enhances washing mode versatility, improves power transmission stability, extends the service life of the machine, and allows for efficient and controlled operation by reducing the load on the planetary gear assembly.
Implementation Method 1
the brake pawl holds the brake disk tightly to brake the brake disk
Data Source
AI summary
A drum washing machine includes a tub; a drum rotatably provided in the tub; an agitator rotatably provided in the drum and having a water spray hole; a driver in transmission connection with the drum via a main shaft, and the main shaft transmitting a torque of the driver to the drum; a planetary gear assembly in transmission connection with the main shaft and the agitator separately, and transmitting the torque of the main shaft to the agitator; a brake linked with the planetary gear assembly, and a water supply device configured to supply water to the agitator.