French press coffee maker apparatus and method with ease of cleaning features
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Solution Overview
Problem
Cleaning used coffee grounds from a French press coffee maker is tedious, difficult, and often results in clogged sinks or smelly garbage cans, as existing methods require manual scooping or creating a slurry that can be messy and inefficient.
Innovation Solution
A French press apparatus with a carafe having an open top and bottom, featuring a top disc with perforations for liquid passage and a bottom disc that forms a waterproof seal, along with an elongated driving rod for easy removal and disposal of coffee grounds, allowing for efficient separation and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional French press design is used, then coffee brewing function is achieved, but cleaning process becomes tedious and difficult
Solution Approach 1:
The French press is divided into separable components: a removable bottom assembly that can be detached from the carafe body. This segmentation allows the bottom assembly (containing coffee grounds) to be easily removed and disposed of, eliminating the need for manual scooping or slurry creation, thus resolving the contradiction between cleaning ease and time consumption
Solution Approach 2:
The bottom assembly with coffee grounds is extracted as a separate removable unit from the carafe. The bottom disc with attached filter and grounds can be pulled out through the top opening, allowing direct disposal without cleaning the entire carafe interior, thereby improving cleaning ease while reducing time loss
2Ease of operation
If slurry method is used for cleaning, then coffee grounds are removed, but sink becomes clogged
Solution Approach 1:
The bottom assembly containing coffee grounds is extracted as a complete unit through the top opening of the carafe. This allows the grounds to be disposed of directly into trash without creating a slurry that would drain into the sink, eliminating the harmful effect of sink clogging while maintaining easy grounds removal
Solution Approach 2:
The bottom assembly is designed as a disposable or easily replaceable component. After use, the entire bottom assembly with grounds can be discarded or quickly refreshed, avoiding the need to clean and dispose of grounds through drainage systems that could become clogged
3Ease of operation
If manual scooping is used for cleaning, then coffee grounds are removed, but process becomes time-consuming
Solution Approach 1:
The French press is segmented into a removable bottom assembly that contains all coffee grounds. This single-unit segmentation eliminates the need for manual scooping operations, allowing the user to simply pull out the bottom assembly and dispose of grounds, thereby improving ease of operation while significantly reducing cleaning time
Solution Approach 2:
The bottom assembly with attached filter and grounds is extracted as a complete unit through the top opening. This extraction method replaces time-consuming manual scooping with a simple pull-out motion, resolving the contradiction between ease of grounds removal and cleaning time
4Reliability
If fine coffee grounds are used, then coffee flavor is improved, but plunger requires excessive force
Solution Approach 1:
The filter is designed with specific local qualities: a fine mesh or paper filter on the bottom disc that allows efficient water flow and extraction. This local quality improvement enables the use of finer coffee grounds for better flavor without requiring excessive plunger force, as the filter structure itself facilitates proper brewing
5Reliability
If fine coffee grounds are used, then coffee flavor is improved, but grounds seep through filter
Solution Approach 1:
The bottom disc incorporates a specifically designed filter with appropriate mesh size or paper filtration. This local quality enhancement at the filter location enables it to effectively capture fine coffee grounds while maintaining good water flow, resolving the contradiction between flavor quality and filter precision requirements
Solution Approach 2:
The bottom assembly uses composite construction combining a rigid bottom disc with a flexible filter medium (mesh or paper). This composite structure provides both the mechanical strength needed for handling and the fine filtration capability required to prevent ground seepage, while maintaining manufacturability
Data Source
AI summary
A French press apparatus comprising a carafe having an open top and an open bottom, the top and the bottom being coaxial. A top disc has a peripheral edge that engages the cross-section of the carafe and is perforate and allows liquid passage through at least a part of the surface thereof. An elongated driving rod is selectively engaged with the top disc whereby an axial force on the elongated driving rod will plunge the top disc through any liquid disposed above the bottom disc. The driving rod facilitates removal of the bottom disc and cleaning of the apparatus. Some embodiments connect the carafe to the bottom disc with cooperating first and second luers.