Electrostatic Water Stream Control for Customizable Coffee Brewing
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Solution Overview
Problem
Existing capsule-based coffee machines lack the ability to customize brewing methods, limiting their ability to extract the full flavor of various coffee varieties and resulting in a quality difference between boutique café and home-brewed coffee due to fixed brewing settings and pre-ground coffee freshness issues.
Innovation Solution
A capsule-based brewer system that includes a nozzle for dispensing water, electrodes to control the water stream, and a controller to adjust voltage, allowing for customizable brewing parameters such as grind size, temperature, and pouring patterns, enabling tailored brewing recipes for different coffee beans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed brewing settings are used in capsule-based coffee machines, then device complexity is reduced and ease of operation is improved, but brewing quality and flavor extraction capability deteriorate
Solution Approach 1:
The patent implements dynamic brewing parameters including variable pouring patterns (spiral, circular, pulsating), adjustable water temperature ranges, and controllable flow rates. The system transitions from static fixed settings to dynamic adjustable parameters, allowing the brewing process to adapt to different coffee types and user preferences while maintaining ease of operation through automated control.
Solution Approach 2:
The system enables modification of key brewing parameters including water temperature, flow rate, pouring pattern, and contact time. By allowing these parameters to be changed based on coffee variety and desired outcome, the system achieves both customization capability and improved flavor extraction without significantly increasing user complexity.
2Loss of time
If pre-ground coffee is used in capsules, then brewing convenience is improved and preparation time is reduced, but coffee freshness and flavor quality deteriorate
Solution Approach 1:
The system performs preliminary grinding of coffee beans immediately before brewing, ensuring maximum freshness while maintaining convenience. The integrated grinder allows whole beans to be ground on-demand in the capsule, eliminating the freshness loss associated with pre-ground coffee while keeping the entire process automated and quick.
3Manufacturing precision
If electrodes and voltage control systems are added to control water stream, then pouring precision and brewing quality are improved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical pouring mechanisms with an electrostatic field-based system. Electrodes generate electric fields that precisely control water stream direction and pattern without mechanical moving parts. This substitution achieves high pouring precision while reducing mechanical complexity, as the electrostatic control can be managed through simple voltage adjustment.
4Adaptability or versatility
If customized brewing recipes are implemented, then flavor extraction capability is improved, but control system complexity increases
Solution Approach 1:
The system implements a universal controller that manages multiple brewing functions including temperature control, flow rate regulation, pouring pattern selection, and timing. By consolidating these functions into a single multi-functional control system, the patent achieves comprehensive brewing customization without proportionally increasing overall system complexity.
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 the production of café-quality coffee at home by allowing for precise control of brewing conditions, improving flavor extraction and maintaining coffee freshness through adjustable grind size and customizable pouring patterns.
Implementation Method 1
varying the magnitude of the voltage applied to the first electrode generates an electrical field that changes a distance of the stream of water from the first electrode
Data Source
AI summary
A brewer includes: a nozzle configured to dispense a stream of water downward; a holder configured to hold a container for coffee grinds or tea below the nozzle to receive the stream of water; a first electrode disposed adjacent to the stream of water dispensed by the nozzle; a voltage source electrically coupled to the first electrode through an electrical circuit and configured to apply a voltage to the first electrode; and a controller communicatively coupled to the electrical circuit and configured to control a magnitude of the voltage applied to the first electrode from the voltage source. Varying the magnitude of the voltage applied to the first electrode generates an electrical field that changes a distance of the stream of water from the first electrode.