Toilet Foam Generation Control for Pump Drying and Surface Coverage
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Solution Overview
Problem
Existing toilet foaming devices face issues such as pump failure due to drying up when not in use, waste of foaming liquid due to fixed foam size, and incomplete coverage of the ceramic surface, leading to inefficiencies and liquid waste.
Innovation Solution
The toilet foam generating mechanism includes valves to isolate fluid from the outside when not in use, adjustable foam size through power control, and adjustable foam range through air output adjustment, along with a control method for different usage scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the foaming device uses a fixed small-sized foam for all scenarios, then the foam can maintain long life to isolate sewage from air, but it wastes foaming liquid when large foam is needed and cannot cover the entire ceramic surface
Solution Approach 1:
The patent applies dynamics by making the foam generating mechanism adjustable between different foam sizes based on usage scenarios. The system can switch between small-sized foam (for long life, sewage isolation) and large-sized foam (for pre-use, splash prevention), allowing the foam characteristics to dynamically adapt to different operational requirements rather than being fixed.
Solution Approach 2:
The patent implements parameter changes by controlling the liquid suction device through power adjustment to vary the volume of foaming liquid pumped into the foam generating cavity. This enables the system to generate different foam sizes by changing the liquid volume parameter, thereby optimizing foaming liquid usage across different scenarios.
2Area of stationary object
If the foaming device sprays foam onto the entire ceramic surface, then complete coverage is achieved, but the fixed foam range cannot adapt to different spray positions and causes foam to be sprayed out of the ceramic surface
Solution Approach 1:
The patent applies dynamics by making the foam spray range adjustable through air output control. The system can dynamically adjust the foam spray range to match different ceramic surface areas and positions, enabling complete coverage when needed while preventing foam from being sprayed beyond the ceramic surface boundaries.
3Loss of energy
If the foaming device is not used for a long time, then energy is saved, but the foaming liquid in the liquid pump dries up and solidifies causing pump failure
Solution Approach 1:
The patent implements preliminary anti-action by providing preliminary protection against the harmful effect of drying up through the valve mechanism. The valve can isolate the liquid pump from the foaming liquid supply when the system is not in use, preventing the foaming liquid from drying up and solidifying in the pump, thereby maintaining pump reliability without requiring continuous energy consumption.
Solution Approach 2:
The patent creates an inert environment by isolating the liquid pump from the external foaming liquid supply using valves. This isolation creates a protected environment within the pump that prevents drying up and solidification, effectively preserving pump functionality during extended periods of non-use.
Data Source
AI summary
A toilet foam generating mechanism includes: a foam generating cavity, including a foam outlet; a foam spray nozzle in communication with the foam outlet; and a foaming liquid adding passage in communication with the foam generating cavity. The foaming liquid adding passage includes: a foaming liquid chamber; and a liquid suction device, including a first end in communication with the foaming liquid chamber and a second end in communication with the foam generating cavity. The liquid suction device is electrically coupled to a first switching power supply. A control method for spraying foam by a toilet includes determining a current usage scenario of the toilet; determining a foam mode associated with the current usage scenario as a current foam mode according to the current usage scenario of the toilet; and executing the current foam mode.