Dual pipe for heat exchange
US9513061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2013 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Jun 23, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F9/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A dual pipe and a heat exchanger comprises: an outer pipe formed separately from the inner pipe to house the inner pipe therein; and a connector coupled to the inner pipe and the outer pipe. The connector includes: an outer pipe connection portion for housing an end portion of the outer pipe therein; a fastening groove; a stopper; and a through hole. The inner pipe is housed at the inside of the outer pipe, and a coil portion is formed in a portion positioned at the inside of the outer pipe. A portion extended from the coil portion is extended from the inside to the outside of the connector through a through hole of the connector. An outermost portion of the coil portion line contacts with an inner circumferential surface of the outer pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.