Shaved Coffee Bean Flakes for Consistent Extraction and Dust Reduction
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Solution Overview
Problem
Conventional coffee grinding techniques result in inconsistent particle sizes and shapes due to varying crush thresholds within coffee beans, leading to unpredictable taste characteristics and inefficiencies in extraction, with issues like channeling, dust formation, and heat generation.
Innovation Solution
A coffee shaving process that produces shaved coffee bean products with consistent transverse dimensions, aspect ratios, and optimized surface area to volume ratios, minimizing contacts with cutting elements to enhance extraction efficiency and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional burr grinding or blade grinding is used to reduce coffee bean particle size, then the surface area of accessible coffee pores increases, but the particle size becomes inconsistent and particle shape becomes irregular
Solution Approach 1:
The coffee bean is segmented into multiple flakes through a single-pass shaving process, where each flake represents a portion of the original bean. This segmentation approach allows different regions of the bean to be processed independently, preserving their individual characteristics while achieving consistent flake formation. The shaving process divides the bean into numerous thin flakes with uniform thickness, solving the particle size consistency problem while maintaining high surface area.
Solution Approach 2:
The invention transitions from conventional three-dimensional grinding (which produces irregular particles) to a two-dimensional shaving process that creates flat flakes with controlled thickness. By focusing on the thin dimension (flake thickness) rather than reducing overall particle size in all directions, the process achieves consistent particle dimensions while preserving surface area for extraction.
2Length of moving object
If coffee beans are ground repeatedly with blades or burrs to achieve desired particle size, then particle diameter is reduced, but multiple contacts with cutting elements cause inconsistent results and heat generation
Solution Approach 1:
The shaving process performs the particle size reduction in a single preliminary pass, creating uniformly thin flakes that are ready for brewing. This eliminates the need for repeated grinding cycles that cause inconsistency and heat generation. The flake thickness is controlled during the initial shaving operation, ensuring reliable and consistent results without the need for multiple processing stages.
3Productivity
If conventional grinding creates fine particles to increase extraction surface area, then extraction efficiency improves, but dust formation and channeling occur
Solution Approach 1:
The shaving process creates flakes with locally optimized characteristics - thin enough to provide high surface area for extraction, but with sufficient lateral dimensions to prevent dust formation. Each flake maintains a specific thickness-to-area ratio that balances extraction efficiency with prevention of harmful effects like channeling and dust. The local geometry of each flake is controlled during the shaving process to achieve this optimal balance.
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 shaving process maximizes coffee extraction potential by ensuring uniform access to coffee cells, reducing channeling and dust formation, and maintaining taste consistency across brewing methods.
Implementation Method 1
subjecting the initial feedstock to a shaving process with a cutting element so as to produce the shaved coffee bean product
Implementation Method 2
when the pores of ground coffee are exposed to a solvent, such as water, they generally release amino acids (proteins), carbohydrates, fiber, minerals, antioxidants, caffeine, and/or pectin into the solvent
Data Source
AI summary
A coffee bean shaving process is utilized herein to produce shaved coffee bean products, such as coffee flakes, coffee shavings, and coffee slices, which may comprise clean and smooth faces and rough edges. Due to the shaving process described herein, the shaved coffee bean products may be produced with larger and fewer surfaces, thereby yielding a coffee product with greater surface area to volume (SA/V) ratios, particularly when compared to coffee grounds produced by conventional burr grinders. Consequently, by optimizing these SA/V ratios, it has been observed that one can maximize the coffee making potential of a coffee bean and reduce the SA/V variances between particles, thereby creating more consistent results.