Cross-fin type heat exchanger and refrigeration cycle apparatus including the same
US9234706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2010 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jun 10, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D2021/0071
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A plurality of heat transfer fins are arranged so as to surround straight pipe portions of heat transfer tubes connected through bends in a serpentine arrangement. Heat transfer surfaces for transferring heat between air of the heat transfer tubes and the heat transfer fins have holes each having a radius smaller than the critical radius of a nucleus that occurs upon phase change from water vapor to condensed water droplets such that the holes are filled with the air at all times. Water is allowed to move from the holes filled with the air having low surface energy to metal part having high surface energy, thus improving drainage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.