Foaming Device Negative Pressure Mixing for Toilet
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Solution Overview
Problem
Existing foaming devices for intelligent toilets have complex structures, large volumes, and low foaming efficiency, leading to high costs and inefficient use of internal space.
Innovation Solution
A foaming device with a simple structure comprising a valve body, a pump, and a self-suction spray head, which generates negative pressure to mix water and foaming agent, and produces foam by mixing with air, resulting in high foaming efficiency and low cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foaming structure with water tank, liquid storage tank, water pump, liquid pump, and air pump is used, then foaming function is achieved, but device complexity increases and internal space is consumed
Solution Approach 1:
The patent combines the water pump and liquid pump into a single pump that handles both water and foaming agent through a unified suction system. The valve body integrates multiple functions (water inlet, liquid inlet, mixing cavity, outlet) into one component, reducing the number of separate parts and simplifying the overall structure while maintaining the foaming function.
Solution Approach 2:
The single pump serves multiple purposes: it sucks both water and foaming agent, creates negative pressure for self-suction, and drives the mixed liquid through the system. The valve body performs multiple functions including mixing, flow control, and pressure regulation, making each component multi-functional to reduce overall device complexity.
2Adaptability or versatility
If multiple pumps and tanks are used for foaming, then foaming capability is provided, but the volume of the device increases
Solution Approach 1:
By merging the water and liquid delivery systems into a single pump and integrated valve body, the patent significantly reduces the volume required for foaming functionality. The unified structure eliminates the need for separate tanks and pumps, compacting the overall device volume while preserving full foaming capability.
Solution Approach 2:
The patent employs a nested arrangement where the mixing cavity is integrated within the valve body, and the self-suction spray head is positioned to utilize the negative pressure generated by the pump directly. This nesting of functional elements within each other reduces the overall device volume while maintaining all necessary foaming functions.
3Adaptability or versatility
If a complex connection structure is used to achieve foaming, then foaming function is realized, but installation convenience decreases
Solution Approach 1:
The integrated valve body with unified inlet ports and internal mixing channels reduces the number of external connections and assembly steps required. The simplified structure with fewer separate components makes installation more straightforward and convenient while still achieving the complete foaming function.
4Productivity
If multiple components are used for foaming, then foaming efficiency can be improved, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by combining multiple components into fewer integrated parts. The single pump and integrated valve body reduce the number of parts that need to be manufactured, assembled, and quality-tested, thereby lowering overall manufacturing costs while maintaining effective foaming performance through the optimized mixing and spray design.
Data Source
AI summary
A foaming device comprises a valve body, a pump, and a self-suction spray head. The valve body comprises a water inlet port, a liquid inlet port, a mixing cavity, and a liquid outlet port. Each of the water inlet port, the liquid inlet port, and the liquid outlet port is in communication with the mixing cavity, and an input end of the pump is connected to the liquid outlet port to enable the mixing cavity to generate a negative pressure to suck water and foaming agent respectively from the water inlet port and the liquid inlet port for mixing. The self-suction spray head is connected to an output end of the pump, and the self-suction spray head comprises a first air inlet hole and a spray hole to enable mixed liquid to be mixed with air to produce foam to be sprayed out.