Segmented Soldering Iron Tip for Rapid Heating and Cooling
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Solution Overview
Problem
Existing soldering irons face issues with mobility, slow heating and cooling times, risk of burns, limited connection capacity, and the need for separate tools for illumination and continuity testing, with butane irons posing flammability risks and battery-powered ones having low power output.
Innovation Solution
A soldering iron with a semiconductive tip having two electrically isolated halves, allowing focused heat creation and quick heating/cooling, integrated light for illumination, and a continuity testing function, eliminating the need for separate tools and reducing tool carrying burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional soldering iron tips with large mass are used, then they can maintain heat for longer duration, but they heat up slowly and cool down slowly, increasing risk of burns
Solution Approach 1:
The tip is divided into two electrically isolated halves that can be applied to the workpiece simultaneously. This segmentation allows the electrical current to flow through both halves in parallel, effectively doubling the heating efficiency while reducing the total mass that needs to be heated, thus achieving faster heating and cooling speeds.
Solution Approach 2:
The tip halves are made from materials with specific electrical and thermal properties (high electrical resistivity and low thermal conductivity) to concentrate heat generation at the contact points with the workpiece while minimizing heat retention in the tip itself, enabling rapid heating and cooling.
2Ease of operation
If battery-powered cordless soldering irons are used, then mobility is improved, but power output is limited to 15-25 watts and connection capacity is limited to 125 connections per charge
Solution Approach 1:
The dual-half tip design allows electrical current to flow through both halves simultaneously in parallel, effectively doubling the power utilization efficiency. This enables the battery-powered iron to achieve higher effective power output (capable of 300-1200 connections per charge) without increasing battery capacity or sacrificing mobility.
3Device complexity
If the light and heating element share the same switch, then device complexity is reduced, but the light cannot be used without heating the tip, requiring a separate flashlight
Solution Approach 1:
The electrical circuit is segmented into separate controllable paths: one for the heating element and one for the light. This allows independent control of each function through separate switches or control mechanisms, enabling the light to be used for illumination without necessarily activating the heating element, thus providing versatility while maintaining relatively simple device architecture.
4Ease of operation
If manual switches are used to control heating, then ease of operation is maintained, but the tip remains hot after use requiring substantial cooling time
Solution Approach 1:
The divided tip structure with two electrically isolated halves allows for more efficient heat dissipation. When the switching element opens the circuit, both halves stop heating simultaneously, and their reduced individual mass allows for faster cooling compared to a single large-mass tip, reducing the cooling time required between uses.
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
Enables rapid heating and cooling, increased connection capacity, reduced risk of burns, and higher power output, while providing illumination and continuity testing in a single portable device.
Implementation Method 1
The halves of the tip are constructed from material having high electrical resistivity and low thermal conductivity. Therefore, the heat creation is focused in the very front end of the tip, where it is needed
Implementation Method 2
The halves of the tip are constructed from material having high electrical resistivity and low thermal conductivity
Data Source
AI summary
The present invention provides a soldering iron with a tip having two separate halves that are electrically isolated from one another. When both halves of the tip are applied to an electrically conductive material, such as the material to be soldered, an electrical circuit between the tip halves and an electrical power source is completed. Therefore, the tip can reach operating temperatures quickly. When the tip is removed from the joint, the electrical circuit is broken and the tip material may quickly cool to a temperature safe for human contact. The tip material permits higher power outputs than other battery operated portable soldering irons and heat and cools faster the conventional soldering tips.