UV-LED Housing Liquid Cooling Design
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Solution Overview
Problem
Existing ultraviolet irradiation devices using UV-LEDs face complications and high costs due to the need for dedicated cooling fluids, and lack effective cooling solutions, especially in pressurized environments where pressure resistance and efficient heat dissipation are required.
Innovation Solution
An ultraviolet irradiation device with a housing that contacts the to-be-treated liquid to cool the UV-LED, utilizing a heat discharge block adjacent to the open end for efficient heat dissipation, eliminating the need for dedicated cooling fluids and achieving pressure resistance through a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If dedicated cooling fluid is introduced to cool the ultraviolet light-emitting diode, then cooling efficiency is improved, but device complexity increases and costs increase
Solution Approach 1:
The housing structure serves dual functions: it provides mechanical support for the UV-LED and simultaneously acts as a heat dissipation component through direct thermal contact with the treated liquid. The housing's thermal conductivity and surface area enable it to self-cool the UV-LED without requiring separate cooling systems, fluids, or active cooling mechanisms.
Solution Approach 2:
The housing is designed to perform multiple functions: structural support, UV transmission (through ultraviolet-transparent materials), and heat dissipation. By integrating cooling functionality into the existing housing structure rather than adding separate cooling components, the system achieves efficient UV-LED cooling while maintaining simple device construction and avoiding the need for dedicated cooling fluids.
2Reliability
If the ultraviolet source is placed distant from the to-be-treated liquid, then pressure tightness is improved, but cooling efficiency deteriorates
Solution Approach 1:
The housing acts as an intermediary component that simultaneously satisfies both pressure containment and heat dissipation requirements. It provides a liquid-tight barrier that isolates the UV-LED from direct liquid contact (maintaining pressure integrity) while its thermal contact with the liquid enables efficient heat transfer from the UV-LED to the bulk liquid, resolving the contradiction between pressure tightness and cooling efficiency.
3Volume of moving object
If a compact design is adopted, then device size is reduced, but heat dissipation capability may be compromised
Solution Approach 1:
The cooling function is merged with the housing structure itself rather than being a separate component. The housing's inherent thermal properties and its direct contact with the treated liquid provide sufficient heat dissipation capacity within the compact device volume, eliminating the need for additional heat sinks or cooling apparatus that would increase device size.
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 solution allows for simple, efficient cooling of UV-LEDs without dedicated cooling fluids, maintaining effective pressure resistance and compact construction, while ensuring the UV-LEDs operate within safe temperature ranges.
Implementation Method 1
the housing is cooled by the to-be-treated liquid
Implementation Method 2
an ultraviolet light-emitting diode accommodated in the housing, wherein ultraviolet rays generated from the ultraviolet light-emitting diode are irradiated to the to-be-treated liquid
Data Source
AI summary
The inventive device efficiently cools, with a simple construction, heat generated from an ultraviolet light-emitting diode (UV-LED). The UV-LED is accommodated in a housing that has an open end and an ultraviolet-transparent closing end. A portion of the housing adjacent to the closing end contacts to-be-treated liquid, ultraviolet rays generated from the UV-LED are irradiated to the to-be-treated liquid, and the housing is cooled by the to-be-treated liquid. In this way, the heat generated from the UV-LED can be cooled with a simple construction without use of arrangements for introducing dedicated cooling fluid for cooling the UV-LED. A heat discharge block for discharging to the outside the heat generated from the UV-LED may be provided at or adjacent to the open end of the housing. Further, the present invention may be constructed in such a manner that a portion of the discharge section directly contacts the to-be-treated liquid.