Multi-zone thermal process system utilizing nonfocused infrared panel emitters
US4833301A · kind A · utility
39Cited by
30References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Mar 25, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/42
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multi-zone thermal process system utilizing nonfocused infrared panel emitters. An insulated housing has a plurality of zones each having separate panel emitters which heat a product load traveling through the zone and in close proximity to said panel(s) at different peak wavelengths in each zone. The panel emitters emit infrared wavelengths in the middle and far regions. The temperature differences across each zone and between the panel and product are held to a minimum. A specific application of the system is for accomplishing reflow soldering of surface mount devices to printed circuit boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.