Group head vortex shower
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coffee machines with group head shower screens face issues such as limited water diffusion leading to inadequate coffee extraction, clogging due to residue water and coffee grounds, and difficulty in cleaning, which affects the flavor of subsequent brews.
Innovation Solution
A group head vortex shower is introduced, featuring a design with outer outlets and spout holes that output water jets interacting with curved and arcuate surfaces, respectively, creating vortices that uniformly agitate ground coffee and optimize extraction, while the larger outlets facilitate easier cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
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 employs curved inner surfaces instead of flat or vertically oriented surfaces. The curved surfaces redirect water flow to create transverse agitation and vortex motion, enabling the water to effectively contact and agitate the ground coffee particles from multiple angles, thereby improving extraction efficiency while maintaining even water distribution
2Ease of operation
If a group head shower screen with vertically open pores is used, then water can diffuse downward, but residue water and coffee grounds are sucked back through the screen during pressure release, causing staining and clogging
Solution Approach 1:
The curved inner surfaces are designed to facilitate the removal of residue water and coffee grounds. The curvature promotes self-cleaning by directing flow patterns that prevent residue accumulation, and the larger outlet dimensions combined with curved surfaces enable easier access for cleaning operations, reducing clogging and staining issues
Solution Approach 2:
The patent changes the geometric parameters of the outlets from small vertical pores to larger openings with curved surface configurations. This parameter change allows for better flow control during pressure release, preventing back-suction of residue while maintaining effective water diffusion during extraction, and significantly improves cleanability
3Quantity of substance
If conventional water distribution is used, then water can be supplied to the portafilter basket, but the water cannot uniformly agitate the ground coffee to optimize extraction
Solution Approach 1:
The curved inner surfaces strategically positioned within the water distribution system create vortex flow patterns and transverse agitation. This curvature-induced flow transformation converts simple downward water supply into dynamic, multi-directional water movement that uniformly agitates the ground coffee, optimizing extraction efficiency while maintaining adequate water quantity distribution
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
The group head vortex shower effectively agitates ground coffee to enhance extraction efficiency, reduces clogging and cleaning challenges due to larger outlets, and ensures consistent flavor by preventing residue buildup.
Implementation Method 1
outer outlets (40) that output water jets (WJ) towards the at least one curved inner surface (S) of the reflection wall (5), wherein the water jets (WJ) create a vortex when contacting the at least one curved inner surface (S) of the reflection wall (5)
Implementation Method 2
cooperating wall (6) having at least one arcuate surface (C) that surrounds the central axis (L) and that faces the spout holes (30), wherein the water jets (WJ) create a vortex when contacting the at least one arcuate surface (C) of the cooperating wall (6)
Implementation Method 3
The water supplied by the water inlet unit (1) is able to diffuse from the diffusion hole (235) of the group head diffusion screw (233) through the group head shower screen (232) and reach the portafilter basket (22) evenly
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A group head vortex shower is used in a coffee machine (8) and includes a bottom wall (3), a surrounding wall (4) and a reflection wall (5). The surrounding wall (4) extends from the bottom wall (3), surrounds a central axis (L), cooperates with the bottom wall (3) to define a water inlet space (W), and has a plurality of outer outlets (40) that are in fluid communication with the water inlet space (W). The reflection wall (5) is sleeved around the surrounding wall (4), and has a curved inner surface (S) surrounding the central axis (L). The outer outlets (40) outputs a water jet from the water inlet space (W) in a water outlet direction (D1...to...DN) towards the at least one curved inner surface (8) of the reflection wall (5). An imaginary extension line (L1 ...to...LN) of the outer outlets (40) and the central axis (L) are skew lines.