Flat evaporator
US6601643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A flat evaporator is provided. In the evaporator, a common chamber formed on a substrate with a predetermined diameter and depth for containing a coolant is divided into a vaporization cavity region, a capillary region surrounding the vaporization cavity region, and a manifold region surrounding the capillary region. The capillary region has a capillarity generator capable of generating capillary action, and a top plate is configured to include an exhaust unit including a gas collector to exhaust a gas coolant generated in the vaporization cavity region. Also, the evaporator includes an auxiliary capillarity generator having a plurality of pins extending towards the center of the vaporization cavity region between the top plate and the substrate. The evaporator can be implemented as a small cooling device for performing cooling without external power. Furthermore, the evaporator can effectively prevent degradation of fluid flow force due to coexistence of gas and liquid by isolating a liquid coolant from a vaporized coolant by a capillary region, thereby significantly improving heat exchange characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.