Water Discharge Apparatus Splash Suppression via Preliminary Film
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Solution Overview
Problem
Existing water discharge apparatuses in kitchens face challenges in concurrent sterilization of chopping boards with a small amount of sterilization water, leading to early water flow-off and corrosion of metal products due to high oxidative power in shower or mist forms of water discharge.
Innovation Solution
A water discharge apparatus with a sterilization water generation unit, a switching valve, and a control unit that executes a water film formation step using running water before the sterilization step, reducing water film formation and suppressing water splash, thereby preventing corrosion of metal products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sterilization water is discharged in a shower form or mist form, then the sterilization efficiency is improved and water film formation is reduced, but water splash increases causing corrosion of metal products
Solution Approach 1:
The system performs a preliminary water film formation step by discharging running water to create a water film on the chopping board surface before discharging sterilization water. This preliminary action suppresses water splash when sterilization water is discharged in shower or mist form, while still achieving effective sterilization.
Solution Approach 2:
The water film formed by running water acts as an intermediary layer between the sterilization water and the chopping board surface. This intermediate water film reduces the impact and splash of sterilization water while allowing effective sterilization to occur.
2Productivity
If water ejection rate is increased to sterilize entire chopping board quickly, then sterilization speed is improved, but water film becomes large causing water to flow down early
Solution Approach 1:
The system changes the discharge parameters by using shower or mist form instead of continuous stream, and controls the discharge duration to 5 seconds or less. This parameter change allows rapid sterilization while reducing water film formation and preventing early water flow-off.
Solution Approach 2:
The system uses short-duration periodic discharge of sterilization water (5 seconds or less) rather than continuous discharge. This periodic action achieves sterilization of the entire chopping board quickly while minimizing water accumulation and flow-off.
3Object-affected harmful factors
If sterilization water is discharged as rectified water, then water splash is suppressed, but sterilization efficiency decreases and more water is needed
Solution Approach 1:
The system discharges running water first to form a water film on the chopping board surface before discharging sterilization water. This preliminary action suppresses water splash when sterilization water is discharged, enabling the use of shower or mist form for improved sterilization efficiency.
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
Enables effective sterilization of chopping boards with a small amount of sterilization water for a short time while minimizing water splash and corrosion of metal products, even when using a shower or mist form of water discharge.
Implementation Method 1
an ion water generator to generate sterilization water
Implementation Method 2
the discharge water in a shower form or the discharge water in a mist form has a high flow rate and is light so that a large water splash is prone to occur
Implementation Method 3
forming a water-splash suppression water film of the running water on a surface of the sterilization object
Implementation Method 4
a switching valve to switch between water discharge and water stop from the sterilization water ejection unit
Data Source
AI summary
A water discharge apparatus WD executes a water film formation step of ejecting running water and forming a water-splash suppression water film of the running water on a surface of a sterilization object, before executing a sterilization step of discharging sterilization water from a sterilization water ejection unit 20 toward the sterilization object.