Method and apparatus for cooling hot spots in platen of linear motor system
US5138206A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Jun 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ferromagnetic stator employed in a linear motor system is provided with a plurality of internal chambers interconnected to one another for the introduction of coolant to maintain the stator at a uniform temperature and to eliminate hot spots. The compartments are coupled to one another to permit free circulation of the coolant throughout the platen. This circulation is induced by heating of the coolant. Each chamber is connected to the adjacent chamber (or chambers) by at least two sets of openings which respectively provide for communication of hotter and cooler coolant therethrough to facilitate passive cooling. As an alternative, in extreme cases, the coolant may be pumped through the platen compartments by an external pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.