Induction coil design for portable induction heating tool
US7202450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Feb 28, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A portable induction tool is provided for soldering or brazing sections of metal pipe together. A work coil head (with induction coil) is U-shaped, allowing placement of the head around lengths of pipe, heating a susceptor (e.g., the pipe) to form a joint, and then to be withdrawn after the pipe joint is made. In one form, the tool uses heat pipes to remove thermal energy from the head, and also a heat exchanger for higher-powered units. Power capacitors are generally included with the induction (work) coil to create a tank circuit of a resonant frequency. The induction coil uses Litz wire, copper tubing, or heat pipes with a conductive outer skin to carry the high-current being delivered to the induction coil. The induction coil has a general racetrack configuration, which is typically wound in a U-shape (or as a semicircle) as a single winding, with multiple turns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.