UV Window Member Heating for Fluid Sterilization Dew Prevention
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Solution Overview
Problem
Existing fluid sterilization devices using ultraviolet light face challenges in preventing dew condensation on window members, which can lead to reduced sterilization efficiency and equipment damage.
Innovation Solution
A fluid sterilization device is designed with a heating body in contact with the window member to heat it efficiently, preventing dew condensation, and includes features like electrically-heated wires and coating layers for enhanced ultraviolet reflectivity and thermal coupling with the light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective tube is provided between the flow passage and the ultraviolet lamp, then the ultraviolet light can be transmitted, but dew condensation occurs on the window member
Solution Approach 1:
The patent applies parameter changes by heating the window member to a temperature above the dew point, thereby changing the thermal parameter of the window member to prevent dew condensation while maintaining ultraviolet light transmission for sterilization
Solution Approach 2:
The patent converts the harmful effect of the cold window member (causing dew condensation) into a beneficial heating function by providing a heating body that heats the window member, transforming the problem of cold surface into a controlled thermal environment that prevents condensation
2Object-affected harmful factors
If a heating body is provided to heat the window member, then dew condensation is prevented, but power consumption increases
Solution Approach 1:
The patent applies self-service by thermally coupling the heating body to the ultraviolet lamp, allowing the lamp's own waste heat to serve the dual purpose of generating ultraviolet light and heating the window member to prevent dew condensation, thereby reducing additional power consumption
3Use of energy by moving object
If the heating body is thermally coupled to the light source, then power consumption is reduced, but the light source structure becomes more complex
Solution Approach 1:
The patent applies universality by designing the heating body to serve multiple functions: it acts as both a heating element to prevent dew condensation and a thermal conductor to utilize the lamp's waste heat, thereby reducing the need for separate heating systems and reducing overall device complexity
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 effectively prevents dew condensation, maintains sterilization performance, and reduces power consumption by utilizing the heat generated by the light source, ensuring stable operation and prolonged equipment life.
Implementation Method 1
a heating body provided to be in contact with the incidence surface and adapted to heat the window member
Implementation Method 2
The heating body may include an electrically-heated wire provided on the incidence surface
Implementation Method 3
a coating layer provided to coat the surface of the electrically-heated wire and made of a material having a higher ultraviolet reflectivity than the electrically-heated wire
Implementation Method 4
a coating layer provided to coat both the surface of the electrically-heated wire and the incidence surface and made of a material that transmits the ultraviolet light
Data Source
AI summary
A fluid sterilization device includes: a processing flow passage in which a fluid subject to sterilization flows; a window member provided between a light source for irradiating the fluid in the processing flow passage with ultraviolet light and the processing flow passage, the window member including an incidence surface on which the ultraviolet light from the light source is incident and an exit surface from which the ultraviolet light exits toward the processing flow passage; and a heating body provided to be in contact with the incidence surface and adapted to heat the window member.