Infrared wok heater
US7926479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Nov 21, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C3/047
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An infrared heater for heating a cooking vessel, such as a Chinese wok. The heater includes a block of refractory material, which emits infrared radiation upon heating to an elevated temperature, forming an inverted frustum-shaped cavity or opening. A gas-fired burner having a burner head which produces a laterally directed flame upon ignition of a mixture of a fuel gas and a combustion oxidant supplied to the burner is disposed in the cavity or opening. A planar structure suitable for emitting infrared radiation upon heating to an elevated temperature and forming at least one centralized opening covers the upward oriented base end of the inverted frustum-shaped opening. In accordance with one embodiment, the refractory block is disposed within a cylindrical housing which supports the cooking vessel above the centralized opening during the cooking process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.