Pour over coffee extraction device
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Solution Overview
Problem
Conventional pour over coffee machines lack the ability to replicate the nuanced hand movements of a barista, resulting in inconsistent coffee extraction and structural instability due to the placement of components.
Innovation Solution
A pour over coffee extraction device that allows a hot water nozzle and a dripper to move relative to each other in three axial directions, utilizing a transport part with horizontal and vertical movement capabilities to replicate the barista's hand movements, while maintaining structural stability by positioning the rotational and elevation operation parts below the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If components for inducing transport movement (driving motor, rotor, sliding piece) are located in the upper portion of the hopper to enable the drip nozzle to follow a spiral trajectory, then pour over coffee extraction can be automated, but the overall center of gravity shifts to the upper portion causing structural instability
Solution Approach 1:
The patent inverts the conventional arrangement by placing the driving motor and rotor in the lower portion of the hopper rather than the upper portion. This inversion relocates the center of gravity to the lower portion, ensuring structural stability while still enabling the drip nozzle to follow a spiral trajectory for automated pour over coffee extraction.
2Ease of operation
If the rotor and sliding piece are located in the vertical upper portion of the hopper with an opened disc area, then the drip nozzle can move along the spiral trajectory, but foreign substances, lubricating oil, or other contaminants may be dropped onto the hopper from these components
Solution Approach 1:
The patent inverts the vertical positioning of the rotor and sliding piece, placing them in the lower portion of the hopper instead of the upper portion. This inversion prevents contaminants and lubricating oil from dripping onto the coffee beans in the hopper, while the drip nozzle still follows the spiral trajectory for effective coffee extraction.
3Device complexity
If a fixed screw groove trajectory is used on the disc, then the mechanism is simple to implement, but the hot water drop trajectory cannot be changed to optimize taste for different coffee bean types
Solution Approach 1:
The patent applies dynamics by making the spiral trajectory adjustable rather than fixed. The driving motor can vary rotation speed and direction, allowing the drip nozzle to follow different spiral paths. This dynamic adjustment enables optimization of hot water drop trajectory for different coffee bean types while maintaining a relatively simple mechanism structure.
Data Source
AI summary
The present invention relates to a device configured to allow a hot water nozzle and a dripper to move relatively in three axial directions in a space in order to replicate the movement of a barista extracting a pour over coffee, the device comprising: a horizontal transport part for operating a head case so that the nozzle is transported along the radial direction of the dripper; a rotational operation part for operating so as to support the bottom surface of the dripper and to rotate same; and an elevation operation part for operating so as to vertically transport the rotational operation part.