Disassemblable double-walled filter for coffee machine with tightening element
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Solution Overview
Problem
Existing coffee machine filters are complex to construct and assemble, and difficult to clean due to their numerous components, requiring disassembly and reassembly during cleaning operations, which is time-consuming and inconvenient, especially in professional environments.
Innovation Solution
A coffee machine filter with a cup-shaped body and a filtering wall that uses a bayonet-type connection with a tubular element and seal, allowing for quick and simple assembly and disassembly, eliminating the need for additional fixing rings and reducing the number of components, along with a dispensing hole for flow acceleration, making cleaning easier and construction simpler.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threaded locking ring with multiple components is used to secure the filtering wall and seal, then the connection is reliable, but the device complexity increases and cleaning becomes difficult
Solution Approach 1:
The patent merges the locking ring, tubular element, and flow regulation valve into a single integrated tightening member. This component serves multiple functions: securing the filtering wall and seal through bayonet connection, providing structural support, and housing the flow regulation valve, thereby reducing the total number of parts while maintaining connection reliability
Solution Approach 2:
The tightening member is designed as a multi-functional component that simultaneously performs mechanical fastening via bayonet connection and houses the flow regulation valve. This universal design eliminates the need for separate fixing rings and valves, simplifying the overall filter structure while ensuring reliable assembly
2Adaptability or versatility
If multiple components are used in the filter assembly, then the functionality is comprehensive, but the ease of operation during cleaning deteriorates
Solution Approach 1:
The filter is divided into two main segments: a removable filter assembly containing the filtering wall and seal, and a stationary cup-shaped body. The bayonet connection enables quick separation of these segments for cleaning, while the integrated tightening member remains attached to the cup-shaped body, facilitating easy reassembly after cleaning
3Productivity
If a bayonet-type connection is used instead of threaded locking, then the assembly and disassembly speed increases, but the manufacturing precision requirements may increase
Solution Approach 1:
The bayonet connection employs asymmetric geometry with a tongue on the tightening member that engages with a corresponding slot in the cup-shaped body. This asymmetric design provides rapid engagement through a simple rotational motion while maintaining sufficient connection precision through the geometric interlocking of the tongue and slot features
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 bayonet-type connection simplifies the assembly and disassembly process, reduces construction complexity, and eliminates the need for flow regulation valves, resulting in a filter that is easier to clean and construct, with improved coffee cream formation due to flow turbulence.
Implementation Method 1
The tubular element is directly constrained to the cup-shaped body by means of a bayonet-type connection
Implementation Method 2
A flow regulation valve is placed within the tubular element. Such valve is also useful for defining the throttling that accelerates the flow of the beverage at the exit so as to create a coffee cream
Implementation Method 3
A seal may be placed between the filtering wall and the cup-shaped body to prevent the coffee powder passing into the gap and through the exit opening
Implementation Method 4
The filtering wall is substantially flat and has a multitude of through holes that allow the infused coffee to pass and retain the coffee powder in the compartment
Data Source
AI summary
A filter for a coffee machine comprises a cup-shaped body (2) for containing coffee powder, having at least a bottom wall (3) having an opening (5); a filtering wall (6) placed in the cup-shaped body (2) upstream of the opening (5) and removably associated with the cup-shaped body (2); a seal (7) placed at least between one edge (6b) of the filtering wall (6) and the cup-shaped body (2); a tightening member (8) active on the filtering wall (6) and on the seal (7) so as to reversibly fix said filtering wall (6) and said seal (7) to the cup-shaped body (2); said tightening member (8) comprising a tubular element (9) connected to the filtering wall (6) and to the seal (7) and arranged through the opening (5); said tubular element (9) being directly constrained to the cup-shaped body (2) by means of a bayonet-type connection.