Device for pressing a dose of ground coffee powder
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Solution Overview
Problem
Existing devices for pressing ground coffee often result in scattering of coffee powder, require moving the filter holder cup, and fail to ensure uniform pressing without altering the coffee's aroma or amount, leading to suboptimal espresso production.
Innovation Solution
A device with a filter holder cup, a pressing piston, and a lifting mechanism that allows the piston to be raised above the grinder's outlet, enabling pressing without moving the cup, with adjustable force and a modular design for independent operation or integration into a coffee machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter holder cup is moved from the ground coffee collection area to the pressing area, then the pressing process can be performed, but the coffee powder scatters out of the filter holder cup
Solution Approach 1:
The patent combines the collection area and pressing area into a single integrated space. The pressing piston is positioned directly above the filter holder cup in the same location where coffee is dispensed, eliminating the need to move the cup between separate collection and pressing areas. This merging of spaces prevents coffee scattering while maintaining ease of operation.
2Manufacturing precision
If the auger continues to rotate after grinding stops to ensure compaction, then coffee powder is compacted, but coffee accumulates in the interstices between threads and scatters when the cup is extracted
Solution Approach 1:
The patent extracts the pressing function from the auger mechanism. Instead of using the auger's rotation to compact coffee, a separate pressing piston is introduced that performs compaction independently. The auger simply dispenses coffee while the piston, positioned above the cup, applies vertical pressure to compact the coffee dose, preventing accumulation in auger threads and subsequent scattering during extraction.
3Ease of operation
If a fixed pressing force setting is used, then the system is simple to operate, but it cannot be adjusted to different beverage types
Solution Approach 1:
The patent introduces a dynamic pressing force adjustment mechanism that allows the pressing force to be varied according to different beverage requirements. The system includes an adjustment mechanism that enables users to select different pressing forces for different beverage types, transforming the static fixed-force system into a dynamic adjustable one while maintaining ease of operation through user-friendly controls.
4Productivity
If the pressing piston presses the coffee while the cup is in position, then the pressing is performed efficiently, but the piston must be positioned precisely above the cup outlet
Solution Approach 1:
The patent introduces a lifting mechanism as an intermediary between the piston and the cup outlet. This mechanism ensures precise positioning of the piston above the cup outlet before pressing begins, using guide elements and positioning features to maintain accurate alignment. The lifting mechanism acts as a mediator that guarantees both high positioning precision and efficient pressing operation.
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 device simplifies and accelerates coffee pressing, reduces scattering, ensures uniform compaction, and allows for adjustable brewing parameters without altering the coffee's aroma or amount, enhancing the quality of espresso production.
Implementation Method 1
a lifting mechanism for lifting said pressing piston in a position above said outlet of said slide
Implementation Method 2
a pressing piston for pressing said dose of ground coffee powder present in said cup
Data Source
AI summary
A device (2) for pressing a dose of ground coffee powder includes a filter holder cup (3) having a filter (4) for depositing the dose of ground coffee powder, an attaching support (7) in which the cup (3) is separably attached, a grinder (8) for coffee beans including a slide (9) for dispensing ground coffee having an outlet (10) positioned above the mouth (5) of the cup (3), a pressing piston (15) for pressing the dose of ground coffee powder present in the filter (4) mounted in the cup (3), and a lifting mechanism for lifting the pressing piston (15) in a position above the outlet (10) of the slide (9).