Device for roasting coffee bean
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coffee bean roasting devices using heated air circulation fail to uniformly mix coffee beans, leading to non-uniform roasting and generate smoke due to husk circulation.
Innovation Solution
A device with a motor-driven fan, electric control, and a roasting part featuring upper and lower containers with an air circulation tube, a turbo-fan, and a heated air guide plate with non-uniformly arranged outlets to ensure even mixing and separate husks, utilizing a double heat-resistant container to minimize heat loss and a bean husk filter to prevent smoke generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heated air is circulated using a turbo-fan, then rapid temperature rise and uniform temperature distribution are achieved, but coffee beans are not uniformly mixed during roasting
Solution Approach 1:
The patent applies the dynamics principle by making the air outlet configuration changeable during the roasting process. The system switches between a first air outlet configuration during a first time period and a second air outlet configuration during a second time period. This dynamic adjustment allows the heated air flow pattern to evolve, enabling both initial temperature distribution and subsequent uniform mixing of coffee beans, thereby resolving the contradiction between temperature uniformity and roasting uniformity.
2Productivity
If husks are circulated together with heated air, then air circulation is maintained, but smoke is generated during roasting
Solution Approach 1:
The patent applies the extraction principle by separating husks from the heated air circulation path. The system includes a husk collection device that extracts husks from the air flow and collects them in a separate container. This prevents husks from being circulated with the heated air, thereby eliminating smoke generation while maintaining efficient air circulation for the roasting process.
3Device complexity
If a single container structure is used, then device simplicity is maintained, but heat loss occurs during roasting
Solution Approach 1:
The patent applies the nesting principle by implementing a double container structure where an inner container is placed within an outer container. The inner container holds the coffee beans and is surrounded by the outer container, creating an insulated chamber. This nested configuration reduces heat loss during roasting by trapping heat between the two containers, thereby improving energy efficiency without significantly increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves uniform coffee bean mixing and roasting while minimizing smoke production by using non-uniform air outlet distribution and a bean husk filter, ensuring consistent roasting quality and reduced smoke generation.
Implementation Method 1
a heater unit installed inside the air circulation tube
Implementation Method 2
a turbo-fan installed on the lower side of the inside of the lower container... configured to discharge air, heated by the heater unit, into a roasting space
Data Source
AI summary
Disclosed herein is a device for roasting coffee beans. The device for roasting coffee beans includes: a driving body configured such that a motor-driven fan and electric control devices are installed therein; a roasting part mounted over the driving body, and configured to roast coffee beans using the flow of heated air; and a lid part mounted over the roasting part, and configured to receive coffee beans. The roasting part includes upper and lower containers, an air circulation tube, a heater unit, a turbo-fan, and a heated air guide plate. The device further includes a double heat-resistant container. The double heat-resistant container is formed in a double structure including an outer glass and an inner glass, and a space for maintaining a predetermined interval is provided between the outer glass and the inner glass.