Heat exchanger
US4691761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Apr 18, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2255/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat exchanger which includes a turbulence promoter interposed between inlet and outlet ports of the heat exchanger and spring means made of a memory alloy for moving the turbulence promoter in a predetermined direction. The area of the heat transfer surface in which the heat transfer coefficient or the unit thermal conductance is increased by the turbulence promoter is changed in accordance with movement of the turbulence promoter. As a result, the heat exchanger effectiveness or temperature effectiveness is intentionally changed and the temperature at the outlet port of the heat exchanger is maintained within a certain range of temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.