Multi-drum washing machine water-draining method
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Solution Overview
Problem
Multi-drum washing machines face challenges in thoroughly expelling washing water, leading to vibration issues and reduced service life, especially when multiple drums drain simultaneously, causing unnecessary noise and vibration.
Innovation Solution
Implementing a sequential drainage control method that synchronizes the operation of drainage pumps and valves between multiple washing drums, ensuring that one drum completes its drainage before the next begins, and extending the operating time of the drainage pump to ensure thorough water expulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple drainage pumps operate simultaneously to drain water from multiple washing drums, then drainage efficiency is improved, but vibration and noise increase significantly
Solution Approach 1:
The patent implements periodic action by controlling drainage pumps to operate sequentially rather than simultaneously. The control unit activates one drainage pump at a time in a predetermined sequence, ensuring that when one pump is operating, other pumps remain inactive. This periodic operation pattern maintains drainage efficiency while significantly reducing vibration and noise levels in the washing machine.
2Device complexity
If a single drainage pump is used for multiple washing drums, then device complexity and cost are reduced, but drainage efficiency decreases
Solution Approach 1:
The patent applies universality by designing a single drainage pump that serves multiple washing drums through sequential operation. The control unit manages the timing and sequence of the single pump to drain water from different drums in turn, enabling one pump to perform the function that would traditionally require multiple pumps. This reduces device complexity and cost while maintaining effective drainage capability.
3Reliability
If drainage pump operates continuously to ensure thorough water expulsion, then service life is extended, but energy consumption increases
Solution Approach 1:
The patent uses periodic action to control the drainage pump operation, activating it only when needed for sequential drainage and keeping it inactive during other operations. This intermittent operation pattern ensures thorough water expulsion to extend service life while avoiding continuous operation that would waste energy. The control unit precisely times pump activation to match drainage requirements.
Solution Approach 2:
The patent implements feedback control where the control unit monitors drainage status and pump operation, adjusting pump activation based on actual drainage needs. This feedback mechanism ensures the pump operates only when water needs to be expelled, preventing unnecessary energy consumption while maintaining reliable water removal to extend service life.
Data Source
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AI summary
A drainage control method for multi-drum washing machine, the multi-drum washing machine comprises at least two washing devices and a drainage pump communicating with the outside. Between each washing device and the drainage pump is respectively provided with a drainage valve. Each washing device of the multi-drum washing machine drains water sequentially. When a washing device completes the drainage, first, the drainage valve of the washing machine is closed, and then the drainage pump is turned off. It is detected whether or not other washing device requires drainage, and if yes, first the drainage valve of the washing device requiring drainage is opened, and then the drainage pump is turned on for the washing device draining water, and if no, the drainage of the multi-drum washing machine ends. The disclosure controls sequential drainage of each washing device, reducing vibration of a washing machine in the drainage process. Moreover, by controlling and determining an operating time sequence of a drainage pump, the disclosure thoroughly drains water in a multi-drum washing machine, extending washing machine service life. The disclosure has a simple structure, low costs, and is suitable for production and promotion.