Group Head Vortex Shower for Transverse Coffee Agitation
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Solution Overview
Problem
Conventional coffee machines require complex machinery for water temperature and pressure control, taking up excessive space and suffering from inefficient coffee extraction due to vertical water diffusion, which can lead to clogging and flavor contamination.
Innovation Solution
A group head vortex shower with a design featuring a bottom wall, surrounding wall, and reflection wall, outputting water jets in skew directions to create a vortex that agitates coffee grounds transversely, using larger outlets to prevent clogging and facilitate easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a group head shower screen with vertically open pores is used to diffuse water downward, then water can evenly percolate into the portafilter basket, but the water cannot agitate the ground coffee transversely to achieve better extraction
Solution Approach 1:
The patent introduces a reflection wall with a curved inner surface that redirects water jets from vertical downward flow to transverse horizontal flow. This dimensional change in water flow direction enables the water to agitate coffee grounds sideways rather than only pushing them downward, significantly improving extraction efficiency by agitating coffee particles in multiple dimensions
Solution Approach 2:
The reflection wall features a curved inner surface that strategically redirects water jets. The curvature of the reflection wall causes the water to follow a curved path and strike the coffee grounds at angles, creating transverse agitation motion that enhances extraction while the smooth curved surface also facilitates easier cleaning compared to sharp corners
2Productivity
If a group head shower screen with vertically open pores is used, then water can diffuse downward, but residue water and ground coffee are sucked back up through the screen during pressure release, staining and clogging the pores
Solution Approach 1:
Instead of relying on the shower screen to directly contact and filter all water, the invention inverts the approach by using a reflection wall to redirect water jets away from the screen. This reduces the water flow and pressure acting on the shower screen, minimizing the suction effect that draws coffee residues back through the pores during pressure release, thereby reducing staining and clogging
Solution Approach 2:
The reflection wall structure extracts and redirects the primary water flow path away from the shower screen pores. By positioning the reflection wall between the water jets and the shower screen, the system separates the main water flow function from the filtration function, allowing the screen to operate with reduced flow stress and remain cleaner for longer periods
3Productivity
If complex machinery is used to control water temperature and pressure parameters, then sufficient water with suitable temperature and pressure can be supplied for coffee extraction, but the coffee machine requires more space to house the machinery
Solution Approach 1:
The patent focuses on changing the flow dynamics parameters of water through geometric design rather than adding complex mechanical control systems. By optimizing the angles and curvature of the reflection wall, the system achieves enhanced coffee agitation and extraction through parameter optimization of the existing water flow, maintaining effective extraction with simpler, more space-efficient machinery
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
Enhances coffee extraction efficiency and quality by creating uniform vortices for better agitation, reducing the need for space and minimizing flavor contamination from residue coffee grinds.
Implementation Method 1
Each of the outer outlets (40) is disposed for outputting a water jet from the water inlet space (W) in a water outlet direction (D1...DN) towards the at least one curved inner surface (S) of the reflection wall (5). An imaginary extension line (L1...LN) extending in the water outlet direction (D1...DN) of each of the outer outlets (40) and the central axis (L) are skew lines.
Data Source
AI summary
A group head vortex shower is used in a coffee machine and includes a bottom wall, a surrounding wall and a reflection wall. The surrounding wall extends from the bottom wall, surrounds a central axis, cooperates with the bottom wall to define a water inlet space, and has a plurality of outer outlets that are in fluid communication with the water inlet space. The reflection wall is sleeved around the surrounding wall, and has at least one curved inner surface that surrounds the central axis. Each of the outer outlets outputs a water jet from the water inlet space in a water outlet direction towards the at least one curved inner surface of the reflection wall. An imaginary extension line of each of the outer outlets and the central axis are skew lines.