Induction Soldering Chamber Layout to Prevent Coil Contamination

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing soldering processes in vacuum induction chambers contaminate inductor coils due to evaporated volatile components from soldering pastes, affecting subsequent processes and reducing efficiency.

Innovation Solution

A method and arrangement using a process chamber with an inductor chamber separated by a thin wall, connected via bypass tubes to maintain equal pressure and prevent contamination, allowing inductive heating without compromising efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If soldering is performed in a vacuum induction chamber, then the soldering process can be completed, but the inductor coils become contaminated by condensed volatile components

Engineering Contradiction:

Improvesoldering process completionVSAvoidinductor coil contamination

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The chamber is divided into two separate chambers: a process chamber for soldering and an inductor chamber for housing the inductor coils. A wall separates these chambers, preventing volatile components from reaching the inductors while allowing the soldering process to proceed in the process chamber.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A wall acts as an intermediary barrier between the process chamber and inductor chamber. This wall blocks the harmful volatile components from reaching the inductor coils while allowing the system to maintain functional connectivity through bypass tubes for pressure equalization.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a wall separates the process chamber from the inductor chamber, then contamination is prevented, but pressure differences may affect the thin wall

Engineering Contradiction:

Improveinductor coil contamination preventionVSAvoidpressure difference on wall

Core Design Contradiction:

Object-affected harmful factorsVSStress or pressure

Solution Approach 1:

Bypass tubes filled with process gas connect the process chamber and inductor chamber, enabling pressure equalization between the two chambers. This pneumatic connection ensures that pressure differences are minimized, reducing stress on the separating wall while maintaining contamination prevention.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Device complexity

If the inductor chamber is integrated with the process chamber, then the device structure is simplified, but the inductors are exposed to volatile components

Engineering Contradiction:

Improvechamber structure integrationVSAvoidinductor exposure to volatiles

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The system is segmented into distinct process and inductor chambers separated by a wall, preventing inductor exposure to harmful volatiles while maintaining a relatively simple overall structure through the use of bypass tubes for pressure equalization.

Inventive Principle:

Principle #1Segmentation

4Strength

If a thick wall separates the chambers, then structural strength is improved, but induction heating efficiency decreases

Engineering Contradiction:

Improvewall structural strengthVSAvoidinduction heating efficiency

Core Design Contradiction:

StrengthVSUse of energy by moving object

Solution Approach 1:

A thin wall is used to separate the process chamber and inductor chamber. This thin wall maintains sufficient structural strength while allowing efficient magnetic field penetration for induction heating, thereby preserving heating efficiency while preventing contamination.

Inventive Principle:

Principle #30Flexible shells and thin films

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

Prevents contamination of inductor coils while maintaining efficient induction heating, ensuring higher yields and production capacity by minimizing temperature variation and cycle time.

Implementation Method 1

inductively heating the one or more first connection partners with the one or more solder layers and second connection partners arranged thereon by means of the one or more inductors

Methodology Applied

Scientific EffectInductive heating: Electromagnetic Induction

Implementation Method 2

inserting process gas into the supply tube, thereby filling the process chamber and the inductor chamber with process gas

Methodology Applied

Scientific EffectAtmospheric protection:

Data Source

PatentUS20250300121A1Method and arrangement for connecting elements to a substrate

Publication Date: 2025.09.25 INFINEON TECHNOLOGIES AG

AI summary

An arrangement comprises a process chamber, an inductor chamber with one or more inductors arranged therein, a supply tube configured to carry process gas from a gas source to the process chamber, an outlet tube configured to carry process gas away from the process chamber, a first bypass tube arranged between the supply tube and the inductor chamber and configured to carry process gas from the supply tube to the inductor chamber, and a second bypass tube arranged between the inductor chamber and the outlet tube and configured to carry process gas from the inductor chamber to the outlet tube. A wall separates the inductor chamber from the process chamber.