Baking Device Roller Assembly Uniform Heating
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Solution Overview
Problem
Existing baking devices with induction heating methods struggle to ensure uniform heating of coffee beans, as only specific areas on the metal drum are heated, leading to uneven roasting conditions.
Innovation Solution
A baking device with a roller assembly comprising an inner and outer cylinder, where the inner cylinder has a mesh structure and a plurality of through holes, forming a heating zone between the cylinders, and an infrared heater is placed within the inner cylinder to indirectly heat the beans, ensuring even distribution and mixing through convection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If induction heating conductor coil is used to heat the metal drum, then heating efficiency is improved, but uniformity of heating across all coffee beans deteriorates
Solution Approach 1:
The single heating zone is segmented into multiple heating zones by dividing the heating conductor coil into several sections positioned at different locations around the drum. This ensures that different regions of the drum receive heating simultaneously, achieving uniform heating across all coffee beans while maintaining high heating efficiency
Solution Approach 2:
Multiple heating zones are merged into a unified heating system that operates simultaneously. The plurality of heating zones work together to provide comprehensive and uniform heating coverage, combining the advantages of induction heating efficiency with uniform temperature distribution
2Loss of energy
If only specific areas on the metal drum are heated, then energy consumption is reduced, but heating uniformity of coffee beans deteriorates
Solution Approach 1:
The heating system is segmented into multiple distributed heating zones around the drum, allowing energy to be applied at multiple locations simultaneously. This segmentation ensures that all coffee beans regardless of position receive adequate heating, achieving uniformity without excessive energy consumption
3Area of stationary object
If the metal drum is rotated to roast coffee beans, then heating coverage is improved, but heating uniformity still deteriorates due to contact variability
Solution Approach 1:
The heating system is segmented into multiple zones positioned at different angular locations around the drum. This segmentation ensures that whether the drum is rotating or stationary, coffee beans at all positions are exposed to heating zones, achieving uniform heating without relying on rotation
Solution Approach 2:
The heating approach transitions from a single-point or single-area heating method to a multi-dimensional heating system with heating zones distributed around the entire circumference of the drum. This dimensional expansion ensures comprehensive heating coverage and uniformity regardless of drum rotation
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 consistent and uniform heating, preventing overheating or burning of coffee beans, ensuring perfectly baked goods by distributing heat evenly throughout the baking zone.
Implementation Method 1
an infrared heater is placed within the inner cylinder to indirectly heat the beans
Implementation Method 2
ensuring even distribution and mixing through convection
Data Source
AI summary
A baking device with uniform heating application comprises a frame, a roller assembly, and a heater. The roller assembly is supported by the frame. The roller assembly comprises a rotatable inner cylinder and a rotatable outer cylinder. The inner cylinder defines a plurality of first through holes that connect inner and outer surfaces of the inner cylinder. The inner cylinder encloses a hollow space that forms a heating zone. The outer cylinder has a plurality of second through holes that connect inner and the outer surfaces of the outer cylinder. The outer cylinder is arranged circumferentially outside and surrounds the inner cylinder. A baking zone of the baking device is formed between the inner and outer cylinders. The heater connected to the frame and arranged in the heating zone.