A High Efficiency Coffee Roaster Development Based on Gas Baking Technology for Home Use

Abstract

Home coffee roasting becomes increasingly popular in recent years. Besides freshness, coffee lover can achieve personal favorite flavors and make it with fun. In this paper, a new coffee roaster development based on gas baking method is introduced. Premixed fuel and direct-fired baking technologies are adapted for increasing energy efficiency, in which premixed flame contacts the beans inside the vertical-rotated drum. Meanwhile, a touch screen controller with fancy human machine interface is also designed for presetting roasting modes, controlling the procedures of roasting, and/or storing recent roast profile for use at other time. Experimental results show that the proposed structure is eco friendly, enriches the energy efficiency, reduces the gaseous emission, and achieves a consistent roast.