Fluid Sterilization Device With Concave Spherical UV Reflection
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Solution Overview
Problem
Existing fluid sterilization devices face challenges in achieving high sterilization efficiency due to variations in light emission characteristics and positional relations of light-emitting elements, which can lead to reduced effectiveness in irradiating the sterilization chamber with ultraviolet light.
Innovation Solution
The device incorporates a concave spherical-shaped sterilization chamber with a light source opening positioned such that its edge line is within a specific range (-10° to +10°) of the light-emitting element's half-value angle, ensuring that the chamber is irradiated with ultraviolet light at approximately 50% or more of the maximum illuminance, and uses materials with high reflectance to enhance light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light source opening is positioned without specific angular constraints, then the device complexity is reduced, but the sterilization efficiency decreases due to insufficient ultraviolet light distribution
Solution Approach 1:
The patent applies parameter changes by precisely defining the angular position of the light source opening relative to the light-emitting element's half-value angle. By specifying that the edge line of the light source opening should be within -10° to +10° of the half-value angle, the patent optimizes the ultraviolet light distribution parameters to ensure thorough sterilization while maintaining a practical design
2Reliability
If the light source opening is positioned at the optimal angular range, then the sterilization efficiency increases, but the manufacturing precision requirement increases
Solution Approach 1:
The patent specifies a parameter range (-10° to +10° around the half-value angle) for the light source opening position, which provides an optimization target while allowing for practical manufacturing tolerances. This parameter specification ensures that as long as the opening falls within this angular range, optimal sterilization performance is achieved
Solution Approach 2:
The patent focuses on optimizing the local quality of light distribution by positioning the light source opening at a specific angular relationship to the light-emitting element. This localized optimization ensures that the ultraviolet light is distributed effectively throughout the sterilization chamber, creating high illuminance regions where needed
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
This configuration ensures thorough irradiation of the sterilization chamber with ultraviolet light, increasing sterilization efficiency by maintaining a helical fluid flow and reducing pressure loss, thereby enhancing the sterilization performance.
Implementation Method 1
a sterilization chamber body (10) including a sterilization chamber (60) for a fluid, a wall surface of which is formed in a concave spherical shape
Data Source
AI summary
A fluid sterilization device includes: a sterilization chamber body that includes a sterilization chamber for a fluid, a wall surface of which being formed in a concave spherical shape, the sterilization chamber body being formed such that a light source opening, a chamber inlet that allows the fluid to flow into the sterilization chamber, and a chamber outlet that allows the fluid to flow out of the sterilization chamber are formed to open into the sterilization chamber; and a light source unit configured to close the light source opening and emit ultraviolet light from the light source opening into the sterilization chamber. The light source unit includes a light-emitting element that emits ultraviolet light, and the light source opening is formed such that an edge line of the light source opening is included in a region that constitutes −10° to +10° around a half-value angle the light-emitting element.