Rotating Outlet Coffee Machine for Uniform Ground Wetting
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Solution Overview
Problem
Existing coffee machines struggle to achieve uniform moistening and optimal extraction of ground coffee, especially when preparing larger quantities, as they rely on static water distribution methods that do not mimic the controlled humidification of manual brewing processes.
Innovation Solution
A coffee machine with a rotatably mounted outlet part driven by a motor, featuring multiple outlet openings arranged around its axis, allowing for even wetting of a larger surface area during brewing, and a switching mechanism to control water flow through different openings based on rotation direction, mimicking manual brewing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a stationary outlet device with fixed outlet openings is used, then the device structure is simple, but uniform saturation and optimal extraction of coffee grounds cannot always be achieved
Solution Approach 1:
The outlet part is made rotatable instead of stationary, allowing it to dynamically change position during the brewing process. This rotation enables the outlet openings to wet different areas of the coffee grounds, achieving uniform saturation and optimal extraction while maintaining a relatively simple device structure.
Solution Approach 2:
The outlet openings are arranged at a distance from the rotation axis, creating an annular wetting pattern. This spatial arrangement in multiple dimensions ensures that rotation covers a larger area of coffee grounds, improving extraction uniformity without significantly increasing structural complexity.
2Manufacturing precision
If manual water application is used, then extraction control is optimized, but preparing larger quantities of coffee is time-consuming
Solution Approach 1:
The system automates the manual brewing process by using a drive mechanism to automatically rotate the outlet part during brewing. This self-service automation maintains the extraction control benefits of manual brewing while significantly increasing productivity for preparing larger quantities of coffee.
Solution Approach 2:
The outlet part rotates periodically during the brewing process, creating a rhythmic wetting pattern similar to manual pouring techniques. This periodic rotation ensures optimized extraction control while the automation enables faster preparation of larger coffee quantities.
3Manufacturing precision
If the outlet part rotates during brewing, then uniform wetting of coffee grounds is achieved, but the device complexity increases
Solution Approach 1:
The outlet part is designed to rotate dynamically during brewing, transforming a static structure into a dynamic one. This rotation achieves uniform wetting of coffee grounds while the drive mechanism remains a relatively simple addition to the overall device.
Solution Approach 2:
The rotating outlet part serves multiple functions: it distributes water uniformly across coffee grounds, enables targeted extraction control through selective outlet opening activation, and can be integrated with existing coffee machine structures. This multi-functionality justifies the moderate increase in device 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
This design ensures optimized extraction by evenly wetting the coffee grounds, similar to manual brewing, while reducing the time and effort required for preparing larger quantities, achieving consistent flavor and efficiency.
Implementation Method 1
The outlet part (7) is rotatable relative to the supply line (5) and can supply hot water to the coffee grounds (46) during a rotational movement
Implementation Method 2
The coffee machine (1) has a pump and a heating element to generate hot water
Implementation Method 3
The coffee machine (1) has a pump and a heating element to generate hot water, which is supplied via a supply line (5) to an outlet (7)
Data Source
Figure 1
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AI summary
A coffee machine (1) comprises a device for generating hot water, a distribution device for the hot water, and a filter vessel (8) arranged below the distribution device, into which a filter and ground coffee can be inserted, wherein the distribution device has a rotatably mounted outlet part (7) with at least two outlet openings (71, 72), which is rotatable for a brewing process by a drive (12). The invention further relates to a method for brewing coffee in which an outlet part is rotated above a filter vessel.