Foam soap dispenser
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Solution Overview
Problem
Existing soap dispensers fail to efficiently produce and dispense foam soap, leading to skin damage, waste, and environmental harm due to the need for manual mixing and the limitations of piston assemblies and gear pumps, which result in unstable foam volume, blockages, and short service life.
Innovation Solution
A foam soap dispenser with a housing containing a raw material chamber, water chamber, and a foaming device, where a mixing device dilutes the soap with water to the appropriate concentration before producing foam, using a drive device to actuate both the mixing and foaming processes, and a flow-adjustable pumping component to control the mixture, ensuring consistent and efficient foam production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a piston assembly is used to mix air with liquid soap through a mesh barrier, then foam is generated, but the piston assembly gets stuck and has short service life
Solution Approach 1:
The patent removes the piston assembly from the system and replaces it with a manual pressing plate that directly compresses the foam mixture through a mesh screen. This extraction eliminates the mechanical complexity and failure points of the piston assembly while maintaining the foam generation function.
Solution Approach 2:
The mesh screen is designed as a simple, replaceable component that can be easily cleaned or replaced when blocked, rather than using a complex piston assembly with long service life requirements. This approach prioritizes ease of maintenance over component durability.
2Ease of operation
If a gear pump is used to mix air and liquid, then foam is produced, but the foam size is inconsistent and requires additional mesh barriers that slow down liquid discharge
Solution Approach 1:
The patent eliminates the gear pump and its associated mesh barriers, using instead a simple pressing mechanism that forces the foam mixture through a single mesh screen. This removes the complexity of gear-driven mixing and multiple barrier systems.
Solution Approach 2:
Instead of using a pump to push liquid through barriers, the patent inverts the approach by using a pressing plate to directly compress the foam mixture against the mesh screen, reversing the traditional pumping-filtration sequence.
3Productivity
If a screw-type liquid-pumping device is used, then liquid is pumped, but backflow occurs which slows down second liquid pumping and results in unstable foam volume
Solution Approach 1:
The patent removes the screw-type pumping device entirely, replacing it with a direct pressing mechanism that eliminates backflow issues. The pressing plate applies direct compression force without the rotational motion that causes backflow in screw pumps.
Solution Approach 2:
The foam mixture itself serves as the pumping medium, being directly compressed and forced through the mesh screen by the pressing plate, eliminating the need for separate pumping mechanisms that introduce backflow problems.
4Ease of operation
If concentrated liquid soap is used without water mixing, then no foam is created, but user's skin becomes susceptible to damage
Solution Approach 1:
The patent combines the liquid soap storage chamber and water storage chamber into a single integrated housing, with both substances being delivered together to the foam generation area. This merging ensures automatic mixing and dilution, preventing skin damage from concentrated soap.
Solution Approach 2:
The system performs preliminary mixing of liquid soap and water before foam generation, ensuring the soap is already diluted to a safe concentration before it contacts the user's skin. This preliminary action prevents the harmful effects of concentrated soap.
5Ease of operation
If manual rubbing is used to foam liquid soap, then foam is created, but a large amount of liquid soap is wasted which is harmful to the environment
Solution Approach 1:
The patent replaces the manual mechanical rubbing process with a mechanical pressing system that forces the foam mixture through a mesh screen. This substitution creates foam more efficiently with less liquid soap consumption, reducing environmental waste.
Solution Approach 2:
The mesh screen acts as a porous material that creates foam through controlled passage of the liquid mixture, generating sufficient foam with minimal liquid soap input compared to manual rubbing methods.
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 produces plentiful, uniformly sized foam with improved discharge speed and stability, reducing the risk of skin damage and environmental impact while extending the service life of the dispenser.
Implementation Method 1
a mixing device dilutes the soap with water to the appropriate concentration
Implementation Method 2
the foaming device mixes air with the liquid and discharged out through the mesh/grid. Foam is generated by the mixing action
Data Source
AI summary
The present invention relates to the technical field of soap dispenser, particularly to a foam soap dispenser including a housing, a raw material chamber, and a liquid soap outlet, and further includes a water chamber, a drive device, and a foaming device; the liquid soap outlet is arranged on the housing; the raw material chamber, the water chamber, the drive device, and the foaming device are arranged inside the housing; a raw material chamber outlet and a water chamber outlet are connected to a foaming device inlet; a foaming device outlet is connected to the soap liquid outlet. The present invention can produce plentiful foam, and the piston assembly thereof is not easy to be stuck, and is provided with a longer service life. Moreover, the produced foam has a uniform size while the discharge speed of foam is faster and more stable than ever.