Ultraviolet emission unit
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Solution Overview
Problem
Existing ultraviolet emission units in air conditioners face challenges in effectively sterilizing air while minimizing the deterioration of emission units and reducing the likelihood of ultraviolet ray leakage, particularly due to the design of reflection units that can cause ultraviolet rays to hit the emission units and lead to attenuation.
Innovation Solution
The ultraviolet emission unit is designed with a specific configuration where the first reflection unit reflects ultraviolet rays at an angle shifted from the emission unit's optical axis, preventing direct hits and leakage, while using a single reflection unit to minimize attenuation, and optimizing the sterilization space for enhanced coverage and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a reflection unit is used to reflect ultraviolet rays back to the emission unit side, then sterilization efficiency is improved through increased ray circulation, but the ultraviolet rays may hit the emission unit causing deterioration and attenuation
Solution Approach 1:
The optical axis of the reflected ultraviolet rays is intentionally shifted by a first angle θ1 in the second direction (orthogonal to the first direction) relative to the emission unit's optical axis. This asymmetric arrangement ensures that the reflected rays do not return directly to the emission unit, preventing deterioration while maintaining sterilization effectiveness through increased circulation path length
2Productivity
If multiple reflection units are used to increase ultraviolet ray circulation, then sterilization coverage is improved, but the complexity of the device increases and more attenuation occurs
Solution Approach 1:
The patent employs a single reflection unit that performs multiple functions: reflecting ultraviolet rays at an angled offset to prevent emission unit hit, directing rays along an optimized circulation path, and achieving comprehensive sterilization coverage through strategic positioning. This consolidation reduces device complexity while maintaining effectiveness
3Length of stationary object
If ultraviolet rays are reflected directly back along the emission axis, then the path length for sterilization is maximized, but ultraviolet ray leakage toward the emission unit side increases
Solution Approach 1:
By shifting the reflected ray optical axis by angle θ1 in the second direction (orthogonal to the emission axis), the system extends the sterilization path length through angled circulation while simultaneously directing reflected rays away from the emission unit, eliminating leakage hazards
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 enhances sterilization efficiency by ensuring effective irradiation of air with high illuminance ultraviolet rays throughout the sterilization space, reduces the risk of emission unit deterioration, and minimizes ultraviolet ray leakage, thereby improving the overall performance and safety of the air conditioning system.
Implementation Method 1
a first reflection unit disposed on the other end side in the first direction of the sterilization space and configured to reflect the ultraviolet ray emitted from the emission unit such that the ultraviolet ray returns to the one end side in the first direction
Data Source
AI summary
An ultraviolet emission unit includes: an emission unit disposed on one end side in a first direction of the sterilization space and configured to emit an ultraviolet ray toward the other end side in the first direction; and a first reflection unit disposed on the other end side in the first direction of the sterilization space and configured to reflect the ultraviolet ray emitted from the emission unit such that the ultraviolet ray returns to the one end side in the first direction. An optical axis of light reflected by the first reflection unit is shifted from an optical axis of the ultraviolet ray of the emission unit by a first angle θ1 toward one end side in a second direction orthogonal to the first direction.