Temperature Equalizing Plate Chamber Sealing by Laser Welding

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Solution Overview

Problem

The existing chamber sealing processes for temperature equalizing plates, which rely on brazing, suffer from low sealing reliability due to incomplete solder vaporization and high manufacturing costs associated with high-temperature furnace processes.

Innovation Solution

A chamber sealing process using laser welding to directly fuse and seal the cover plate and bottom cover without additional solders, incorporating a capillary structure and tooling with a light through channel to ensure precise welding, reducing manufacturing costs and improving efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If brazing is used to seal the chamber, then the chamber can be sealed, but the sealing reliability is reduced due to incomplete solder vaporization and contamination

Engineering Contradiction:

Improvesealing reliabilityVSAvoidsolder contamination

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the thermal field-based brazing process with a laser welding process that uses concentrated optical energy to melt and fuse materials directly. This substitution eliminates the need for solder materials and their associated vaporization issues, directly resolving the contamination problem while improving sealing reliability through cleaner, more controlled welding.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameters of the sealing process by transitioning from high-temperature furnace brazing to localized laser welding. This parameter change includes using focused laser energy with precise control over temperature distribution, welding speed, and focal position, thereby achieving clean seals without solder contamination.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If brazing with furnace body process is used, then the chamber can be sealed, but the manufacturing cost increases and production efficiency decreases

Engineering Contradiction:

Improvesealing reliabilityVSAvoidproduction efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent replaces the complex furnace body brazing system with a compact laser welding system. This substitution enables faster, more precise sealing operations that can be performed sequentially on multiple components without requiring large-scale furnace equipment, thereby improving production efficiency and reducing manufacturing costs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent applies segmentation by dividing the sealing process into discrete, localized laser welding operations rather than requiring a single prolonged furnace brazing cycle. This allows for independent sealing of different chambers or components in sequence, significantly improving production throughput and flexibility.

Inventive Principle:

Principle #1Segmentation

3Reliability

If brazing with furnace body process is used, then the chamber can be sealed, but the manufacturing cost increases

Engineering Contradiction:

Improvesealing reliabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the expensive furnace body brazing equipment with a more cost-effective laser welding system. This substitution reduces capital equipment costs, energy consumption, and operational expenses while maintaining or improving seal quality, thereby directly addressing the manufacturing cost issue.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs consumable laser welding tips or nozzles that can be easily replaced rather than requiring expensive, maintenance-intensive furnace equipment. This approach reduces long-term manufacturing costs by using simpler, more disposable components in the welding system.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 process enhances sealing reliability by increasing welding tension by over 0.5 times, reduces manufacturing costs, and improves production efficiency through precise and efficient laser welding, while maintaining chamber cleanliness and airtightness.

Implementation Method 1

performing laser welding on a contact area between the cover plate and the bottom cover to seal the inner cavity

Methodology Applied

Scientific EffectLaser welding: Laser Beam Welding

Implementation Method 2

temperature equalizing plate as heat dissipation components

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS20240027138A1Chamber Sealing Process for Temperature Equalizing Plate and Temperature Equalizing Plate Manufactured by Same

Publication Date: 2024.01.25 RAYTECH PRECISION TECH (SHUYANG) CO LTD

AI summary

The present invention provides a chamber sealing process for a temperature equalizing plate. The chamber sealing process includes steps of providing a bottom cover, a cover plate and a capillary structure with a sunken groove; forming an inner cavity by enclosing the cover plate and the bottom cover; placing the capillary structure between the cover plate and the bottom cover, and then installing the cover plate in the sunken groove; and performing laser welding on a contact area between the cover plate and the bottom cover to seal the inner cavity for obtaining a temperature equalizing plate with a sealed chamber. It can greatly reduce the manufacturing cost and greatly improve the production efficiency.