Dual grinder for separating and removing silver skins located at center of coffee beans and grinding coffee beans
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Solution Overview
Problem
Existing grinders fail to effectively separate and remove silverskin from coffee beans, particularly those located at the center crease, which affects coffee taste and aroma, and involve complex processing and large-scale equipment.
Innovation Solution
A dual grinder with grinding rollers, air nozzle, and cyclone motor system that separates silverskin by spraying air onto coffee beans, using adjustable gaps and nozzles to collect and remove silverskin efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional grinding methods are used, then coffee beans can be ground, but silverskin cannot be effectively separated and removed
Solution Approach 1:
The grinding process is divided into two distinct stages: first grinding to break coffee beans, then air blowing to separate silverskin. This segmentation allows each stage to be optimized independently, achieving effective silverskin removal without requiring a completely complex integrated system.
Solution Approach 2:
Air is introduced as an intermediary substance between the grinding process and silverskin removal. The air flow acts as a mediator that carries away the lightweight silverskin particles from the ground coffee, enabling separation without direct mechanical contact and simplifying the overall device structure.
2Quantity of substance
If high-temperature roasting is used to reduce silverskin, then coffee bean crease expands, but excessive processing time and energy are required
Solution Approach 1:
The patent replaces thermal processing (high-temperature roasting) with a mechanical-aerodynamic system (grinding + air blowing). This substitution achieves silverskin removal through physical forces rather than thermal energy, significantly reducing energy consumption while maintaining effectiveness.
Solution Approach 2:
The patent changes the approach from thermal parameter control (roasting temperature) to mechanical parameter control (air flow rate, grinding intensity). By adjusting air flow parameters instead of temperature parameters, the system achieves silverskin removal with lower energy input.
3Manufacturing precision
If air flow is increased to separate silverskin, then silverskin removal improves, but coffee aroma is lost
Solution Approach 1:
The coffee beans are ground first to break them into particles, then air flow is applied to separate the silverskin. This preliminary grinding action prepares the material structure so that subsequent air flow can effectively separate silverskin without requiring excessive air intensity that would cause aroma loss.
Solution Approach 2:
The system uses dynamic air flow control where the air flow rate and direction are optimized during the separation process. This dynamic adjustment allows effective silverskin removal while minimizing coffee aroma loss by matching air flow intensity to the actual separation needs.
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 grinder effectively separates and removes silverskin within a short time without large-scale equipment, maintaining coffee freshness and enhancing flavor by reducing off-flavors.
Implementation Method 1
an air nozzle for separating silverskin from the coffee beans by spraying air onto the coffee beans ground by utilizing the first grinding roller and the second grinding roller
Implementation Method 2
a dust collection tube for collecting the silverskin separated from the coffee beans by utilizing a cyclone motor
Data Source
Figure 1
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AI summary
The present invention relates to a grinder for separating and removing silver skins contained in coffee beans in order to preserve the original taste and maintain the freshness of the coffee beans. In addition, the present invention can improve the original taste and flavor of coffee by separating and removing silver skins located at the center cut of coffee beans. In addition, the present invention can quickly and effectively separate and remove silver skins contained in coffee beans without large-scale equipment and complex processing. In addition, the present invention can maintain the freshness and extend the shelf life of coffee beans by separating and removing silver skins located at the center cut of the coffee beans. In addition, the present invention can extract coffee with excellent flavor by removing coffee flavor degeneration factors that can be generated by the mixing of fibers of coffee beans and coffee oils. In addition, the present invention can increase the amount of coffee extracted and reduce the material costs of coffee beans by separating and removing silver skins located at the center cut of the coffee beans.