Coffee Roaster Microwave Heating for Emission and Energy Control
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Solution Overview
Problem
Existing coffee roasting methods for home and non-industrial settings lack effective monitoring and control technologies, leading to inefficiencies, unwanted outputs such as smoke and toxic emissions, and poor energy delivery, making it difficult to roast coffee efficiently and safely outside industrial environments.
Innovation Solution
A coffee roaster system comprising a resonant cavity, a heating unit with a microwave oscillator and beam-steerer, a sensing unit, and a control unit that regulates the microwave energy and beam-steerer to control the roasting process, monitoring parameters like bean temperature and VOC emissions, and adjusting the electromagnetic wave appearance for efficient roasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional heating methods are used for coffee roasting, then the roasting process can be performed, but energy delivery is poor and unwanted emissions such as smoke and toxic materials are generated
Solution Approach 1:
The patent replaces conventional thermal convection heating with microwave electromagnetic radiation heating. The microwave generator produces microwave energy that directly heats the coffee beans through dielectric heating, eliminating the need for hot air circulation systems that produce smoke and toxic emissions. This substitution of heating mechanism dramatically improves energy delivery efficiency while eliminating harmful emissions.
Solution Approach 2:
The patent changes the fundamental heating parameter from thermal convection (hot air temperature) to electromagnetic radiation (microwave frequency and power). By controlling microwave power output and exposure time, the system achieves precise temperature control during roasting, improving energy efficiency and eliminating the combustion-related emissions associated with conventional heating methods.
2Manufacturing precision
If conventional roasting systems are used, then coffee can be roasted, but monitoring and control technologies are insufficient leading to poor process control
Solution Approach 1:
The patent incorporates sensors that continuously monitor roasting parameters such as bean temperature, color changes, and aromatic compound release. This feedback is transmitted to the control unit, which automatically adjusts microwave power output and roasting time to achieve precise control over the roasting process, eliminating the trial-and-error approach of conventional systems.
Solution Approach 2:
The patent introduces an intermediary control system that acts as a bridge between the microwave generator and the roasting process. The control unit receives sensor data, processes it through algorithms, and generates appropriate control signals to the microwave generator, enabling precise and automated process control that would be difficult to achieve through direct manual operation.
3Use of energy by moving object
If microwave heating is applied to coffee beans, then energy efficiency is improved, but control of the electromagnetic waves requires sophisticated systems
Solution Approach 1:
The patent designs the control system to perform multiple functions: monitoring temperature, detecting color changes, measuring aromatic release, and controlling microwave power output. By consolidating these functions into a single integrated control unit, the system achieves high energy efficiency without proportionally increasing complexity, as the same hardware platform handles diverse monitoring and control tasks.
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 system enables precise control over the coffee roasting process, improving energy efficiency, reducing unwanted emissions, and allowing for safe and efficient roasting in non-industrial settings, producing high-quality coffee.
Implementation Method 1
A coffee roaster system comprising a resonant cavity, a heating unit with a microwave oscillator and beam-steerer
Implementation Method 2
generating an electromagnetic wave, the wave heating the beans in the chamber
Data Source
AI summary
It is the object of the present invention to present a coffee roaster, comprising: a resonant cavity, a heating unit, comprising: (i) at least one microwave oscillator and (ii) at least one beam-steerer, a sensing unit; and a control unit configured to control the microwave oscillator and the bean-steerer and receive data from the sensing unit.