Fire tube heater
US8844472B2 · kind B2 · utility
4Cited by
82References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jun 11, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fire tube heater apparatus includes a shell, with a tube bundle received in the shell and a burner section communicated with the tube bundle. The tubes in the tube bundle have circular inlet and outlet end portions with a flattened, serpentine intermediate portion. The intermediate portion has a width greater than the inlet outside diameter and a tube thickness transverse to the width less than the inlet outside diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.