Gas convection oven and heat exchanger therefor
US4648377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 1986 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | May 1, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C15/322
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A gas convection oven includes a heating chamber having a gas combustion chamber formed therein and a blower positioned within the combustion chamber for circulating air through the heating and combustion chambers. The blower defines a low pressure inlet centrally of the combustion chamber for receiving air from the heating chamber and forcing it through the combustion chamber back into the heating chamber around the outer edges of the combustion chamber. A gas burner extends into the combustion chamber and includes a distally-mounted diverter for dividing and directing flame and combustion products into two different directions. A bifurcated heat exchanger defines first and second tubular passages which are aligned with and encompass the blower and define inlets aligned with the two different directions for receiving the combustion products from the burner. The first and second passages terminate in a junction box which passes the products of combustion into the low pressure inlet of the blower such that air drawn from the heating chamber is mixed with the combustion products and then passed over the bifurcated heat exchanger before being recirculated to the heating chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.