Hand Brew Coffee Filter with Adjustable Extraction Time
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Solution Overview
Problem
Existing hand-brew coffee methods lack precise control over the retention time of hot water in the brewing process, leading to inconsistent flavor and potential loss of aroma, and rely on environmentally unfriendly paper filters.
Innovation Solution
A hand brew coffee filter with adjustable extraction time, featuring a container body, regulating rod, guiding member, supporting member, and filter screen, allows precise adjustment of the gap between the filter screen and container body using screw threads to control the retention time of hot water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hand brewing is performed with paper filters, then the brewing process is simple and easy to operate, but the fatty aroma of freshly ground coffee is filtered out and environmental issues arise from discarded paper filters
Solution Approach 1:
The patent employs a metal mesh filter with specific pore sizes that allow fatty aroma molecules to pass through while still effectively separating coffee grounds. This porous metal structure replaces paper filters, eliminating the loss of aromatic compounds and resolving the environmental issue of disposable filter waste.
2Productivity
If high-temperature high-pressure extraction is used, then extraction efficiency is improved, but undesirable water-soluble substances are mixed into the brewed coffee and aroma is lost as temperature lowers
Solution Approach 1:
The patent implements precise control of extraction parameters including temperature, pressure, and time through its adjustable valve mechanism and insulated brewing chamber. This allows optimization of extraction efficiency while preventing the dissolution of undesirable substances and preserving aromatic compounds by maintaining ideal brewing conditions throughout the process.
3Device complexity
If the gap between filter screen and container body is fixed, then device structure is simple, but the retention time of hot water in ground coffee cannot be adjusted
Solution Approach 1:
The patent incorporates an adjustable valve mechanism that dynamically changes the gap between the filter screen and container body. This dynamic adjustment capability allows users to control water flow rate and retention time according to different coffee types and brewing preferences, transforming a static structure into an adaptable system without excessive complexity.
4Manufacturing precision
If multiple components are assembled to achieve precise gap adjustment, then extraction time control precision is improved, but device assembly complexity increases
Solution Approach 1:
The patent divides the brewing device into modular segments including the filter screen assembly, valve mechanism, and container body. Each segment can be independently manufactured and assembled, which facilitates precise gap adjustment through standardized interfaces while managing overall assembly complexity through modular design principles.
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
Enables precise control over the brewing time, enhancing flavor consistency and aroma retention while eliminating the need for paper filters.
Implementation Method 1
the invention controls the retention time of hot water in ground coffee by precisely changing the size of the gap between a filter screen and a container body by way of screw threads
Data Source
AI summary
A hand brew coffee filter with adjustable extraction time includes a container body, a regulating rod, a guiding member, a supporting member, a filter screen, and a base. One end of the regulating rod is inserted through and coupled with the guiding member. The supporting member is mounted around the connecting section at the other end of the regulating rod. The filter screen is mounted around the connecting section and sits on the supporting member. The resulting regulating rod assembly is placed in the container body, before one end of the container body is put in the base to complete the coffee filter. The abutting surfaces between the container body and the guiding member and between the container body and the filter screen have absolute circularity and the same taper value so that the retention time of hot water in the coffee filter can be controlled through gap adjustment.