Gas Laser Marking Apparatus with Microchannel Heat Dissipators
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Solution Overview
Problem
Conventional marking apparatuses face a trade-off between cooling power and flexibility, with space-consuming cooling devices limiting their mobility and application flexibility, and existing CO2 laser designs are not conducive to microchannel cooling due to low heat density.
Innovation Solution
The marking apparatus employs a plurality of resonator tubes with microchannels for efficient heat dissipation, using a cooling fluid that absorbs and transports heat away from the gas laser, and introduces surface perturbations to disrupt laminar flow and enhance cooling efficiency, allowing for compact and efficient cooling without heating the surrounding environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cooling devices are used, then cooling power is sufficient, but the apparatus becomes space-consuming and immobile
Solution Approach 1:
The cooling system is segmented into multiple independent heat dissipaters, each serving a specific resonator tube. This modular approach allows the cooling function to be distributed and optimized independently, enabling compact integration without requiring a large centralized cooling system.
Solution Approach 2:
The heat dissipaters are integrated directly into the laser head assembly, with cooling channels nested within or adjacent to the resonator tubes. This nested configuration allows the cooling system to occupy minimal space while maintaining effective thermal management, resolving the contradiction between compactness and cooling capability.
2Adaptability or versatility
If simple cooling mechanisms like fan and cooling fins are used, then the apparatus is flexible and compact, but cooling power is insufficient
Solution Approach 1:
The invention employs liquid cooling channels integrated into the heat dissipaters, utilizing hydraulic flow to transfer heat efficiently. This liquid cooling approach provides superior cooling power compared to air-based methods while maintaining a compact form factor, as the cooling fluid can be pumped through small-diameter channels directly at the heat source.
3Reliability
If cooling fluid is used to transport heat away, then heat dissipation efficiency improves, but the surrounding environment may overheat
Solution Approach 1:
The heat dissipaters extract heat directly from the resonator tubes through integrated cooling channels, removing thermal energy from the laser head before it can propagate to the surrounding environment. This extraction approach confines the cooling process to localized regions, preventing ambient overheating while maintaining high dissipation 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
This design achieves efficient cooling of the gas laser while minimizing space requirements, allowing for flexible and effective marking of various objects without overheating, thus improving the apparatus's mobility and application range.
Implementation Method 1
each resonator tube is thermally connected to one of the heat dissipaters
Implementation Method 2
a cooling fluid that absorbs and transports heat away from the gas laser
Implementation Method 3
The provision of microchannels may lead to a particularly efficient transfer of heat from the walls of the microchannels to the cooling fluid received therein
Implementation Method 4
introduces surface perturbations to disrupt laminar flow and enhance cooling efficiency
Data Source
AI summary
The invention relates to a marking apparatus for marking an object with laser light, which apparatus comprises at least one gas laser for emitting at least one laser beam for marking the object. The at least one gas laser comprises a plurality of resonator tubes (12) for receiving a laser gas, a plurality of heat dissipaters (20) for dissipating heat from the resonator tubes (12) is provided, each resonator tube (12) is thermally connected to one of the heat dissipaters (20), and each heat dissipater (20) comprises microchannels for receiving a cooling fluid.