Roasting Apparatus Multi-Source Heating System
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Solution Overview
Problem
Existing automatic coffee roasters require a long preheating time due to the use of a single heat source, which limits productivity and flexibility in handling various roasting environments.
Innovation Solution
A roasting apparatus with a cylindrical roasting chamber that uses multiple heat sources: a first heat source providing convection heat, a second heat source providing conduction heat, and a third heat source providing radiant heat, allowing for efficient preheating and temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single heat source is used to heat the horizontally rotating drum, then the device complexity is reduced, but the preheating time increases and productivity decreases
Solution Approach 1:
The heating system is divided into three independent heat sources (first heat source for convection heating, second heat source for conduction heating, and third heat source for radiant heating), each responsible for a specific heating function. This segmentation allows simultaneous operation of multiple heat sources to reduce preheating time while maintaining manageable system complexity through functional specialization.
Solution Approach 2:
The patent combines three different heating methods (convection, conduction, and radiant heating) into a single integrated heating system that operates simultaneously on the coffee beans. This merging of multiple heating functions into one system achieves rapid preheating and maintains temperature during roasting, significantly improving productivity without requiring separate independent heating systems.
2Device complexity
If a single heat source is used, then the device complexity is reduced, but the adaptability to various roasting environments is limited
Solution Approach 1:
The heating system is divided into three independent heat sources (first heat source for convection heating, second heat source for conduction heating, and third heat source for radiant heating), each responsible for a specific heating function. This segmentation allows simultaneous operation of multiple heat sources to reduce preheating time while maintaining manageable system complexity through functional specialization.
Solution Approach 2:
The control unit dynamically adjusts the operation of each heat source based on real-time temperature feedback from temperature sensors. The system can selectively activate different heat sources or adjust their intensity to match various roasting requirements, enabling adaptability to different roasting environments and preferences through dynamic control rather than fixed configuration.
3Productivity
If multiple heat sources are used, then the preheating time is reduced and productivity is improved, but the device complexity increases
Solution Approach 1:
The patent combines three different heating methods (convection, conduction, and radiant heating) into a single integrated heating system that operates simultaneously on the coffee beans. This merging of multiple heating functions into one system achieves rapid preheating and maintains temperature during roasting, significantly improving productivity without requiring separate independent heating systems.
Solution Approach 2:
Temperature sensors are positioned to detect the temperature of coffee beans and/or roasting chamber walls, providing real-time feedback to the control unit. This feedback mechanism enables automatic adjustment of heat source operation, ensuring optimal heating while preventing overheating, thus managing system complexity through intelligent control that maintains productivity benefits.
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 use of multiple heat sources significantly reduces preheating time, improves productivity, and allows for more precise control over the roasting process to meet user preferences.
Implementation Method 1
a first heat source part that provides convection heat to an interior of the roasting chamber by providing hot air flow to the roasting chamber
Implementation Method 2
a second heat source part that is in contact with a surface of the roasting chamber and provides conduction heat to the roasting chamber in a conduction manner
Implementation Method 3
a third heat source part that provides radiant heat to the interior of the roasting chamber
Data Source
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AI summary
The present disclosure relates to a roasting apparatus and a method of controlling the roasting apparatus, and more particularly, to a roasting apparatus for roasting objects while stirring the objects in a roasting chamber, and a method of controlling the roasting apparatus. The roasting apparatus for heating objects according to the present disclosure includes: a roasting chamber part which includes: a cylindrical roasting chamber that extends in a vertical direction and has an internal space in which the objects are stirred; and a rotary stirring part that rotates to stir the objects received in the roasting chamber and rotates about a stirring axis defined in the vertical direction; and heat source parts which supply heat to the roasting chamber part and include: a first heat source part that provides convection heat to an interior of the roasting chamber by providing hot air flow to the roasting chamber; a second heat source part that is in contact with a surface of the roasting chamber and provides conduction heat to the roasting chamber in a conduction manner; and a third heat source part that provides radiant heat to the interior of the roasting chamber.