Coffee Roaster Environmental Sensing for Consistent Bean Roasting
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Solution Overview
Problem
Existing coffee roasting apparatuses struggle to maintain consistent roasting results in varying environmental conditions, particularly due to fluctuations in atmospheric pressure, humidity, and temperature, which affect airflow and humidity control, especially in home appliances.
Innovation Solution
An apparatus with sensors to detect environmental conditions, a control unit to adjust roasting parameters based on these conditions, and a warning mode to prevent operation in unfavorable conditions, ensuring consistent roasting quality across different environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coffee roasting is performed in open loop with fixed parameters, then the apparatus is simple to operate, but the roasting results vary in different environmental conditions
Solution Approach 1:
The patent implements feedback control by using sensors to detect actual roasting parameters (temperature, humidity, pressure) and comparing them against target values. The control unit adjusts heating power and fan speed based on these feedback signals, enabling automatic adaptation to environmental variations and maintaining consistent roasting results without complex manual intervention.
Solution Approach 2:
The apparatus performs self-adjustment by automatically detecting environmental conditions and roasting parameters, then autonomously modifying operational settings to optimize the roasting process. This self-service capability eliminates the need for users to manually compensate for environmental differences, maintaining roasting consistency while keeping the user interface simple.
2Measurement precision
If sensors are arranged inside the chamber to detect roasting conditions, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses environmental sensors placed outside the roasting chamber as intermediaries to indirectly measure conditions affecting the roasting process. By detecting ambient temperature, humidity, and pressure before the chamber, the system infers the internal conditions without requiring direct sensors inside the high-temperature environment, simplifying the overall device architecture while maintaining measurement precision.
3Productivity
If the apparatus operates in all environmental conditions, then productivity is maintained, but harmful factors such as high humidity adversely affect roasting quality
Solution Approach 1:
The system continuously monitors environmental humidity through sensors and uses this feedback to automatically adjust operational parameters. When humidity levels are detected to be within acceptable ranges, the apparatus operates normally; when humidity exceeds thresholds, the control unit modifies heating power or ventilation settings to compensate, maintaining roasting quality while preserving continuous operation capability.
Solution Approach 2:
The patent dynamically changes operational parameters such as heating power, fan speed, and air circulation based on detected environmental conditions. By adjusting these parameters in response to humidity variations, the system maintains optimal roasting conditions across different environmental scenarios, preventing quality degradation while sustaining productivity.
Data Source
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AI summary
The invention relates to an apparatus (1) and to a method for roasting coffee. The apparatus (1) comprises: a chamber (10) in which coffee beans can be received for roasting; a device (80) for roasting the coffee beans received in the chamber (10); a control unit configured to control the device (80), and one or more sensors (100) arranged to detect a condition of the air (200) that surrounds the apparatus (1). The control unit is configured to control the device (80) based on the detected condition.