Roasting system with clean emissions and high thermal efficiency

US10362798B2 · kind B2 · utility

Assignee

• Bellwether Coffee Co. · US

Inventors

• Ricardo Lopez · Bolinas, US
• John Sandhu · Boulder, US
• Arno Holschuh · Berkeley, US
• Victor Escobedo · San Diego, US
• Benjamin Colby Jones · Tuscumbia, US
• Brandon McLaughlin · San Diego, US
• Neil Vesco · San Diego, US
• Henry M. D'Souza · San Diego, US
• David Kortbawi · San Diego, US

Key dates

• Filing date: Apr 10, 2018
• Grant date: Jul 30, 2019
• Expiry date: Apr 10, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A23V2300/24
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A bean roasting system includes a roasting chamber, a blower, a variable diverter and a controller. The roasting chamber, the blower and the variable diverter each is disposed at least partially within a recirculating gas flow path. The blower is configured to provide a flow stream of gas through the recirculating gas flow path. The variable diverter is configured to split the gas flow path into at least two flow paths including a treated flow path and a bypass flow path. The treated flow path includes a series arrangement of a gas heater and a catalytic converter. The variable diverter is configured to control a percentage of a flow stream of gas that is diverted into the bypass flow path. The controller is configured to activate different predetermined operating modes for the bean roasting system by controlling a state of the variable diverter and a state of the heater.