Two-Container Filter Coffee Brewer with Movable Brew-and-Filter Bowl
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Solution Overview
Problem
Existing manual filter coffee preparation methods face challenges with paper filters being tasteless and disposable, while stainless steel or plastic filters either lack fine pores or easily clog, failing to produce a high-quality beverage.
Innovation Solution
A device comprising two containers, a filter bowl with a metal or plastic filter bottom, and a coffee container, where the filter bowl is initially sealed and then moved to a filtering position, allowing for efficient separation of coffee grounds and retaining the drink's quality, with mechanical coupling for secure positioning and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If paper filters are used, then the beverage clarity is improved, but the filter must be replaced repeatedly and adds operational complexity
Solution Approach 1:
The patent applies the opposite approach by using a permanent, reusable filter instead of disposable paper filters. The filter screen (13) is made of stainless steel or plastic mesh that can be cleaned and reused multiple times, eliminating the need for repeated replacement while maintaining beverage clarity through its fine pore structure.
Solution Approach 2:
The filter screen is designed to be recovered and reused through easy cleaning processes. The detachable filter screen can be removed from the filter holder and cleaned by rinsing with hot water, allowing it to be recovered for repeated use without degrading performance.
2Duration of action of stationary object
If stainless steel or plastic filters are used, then the filter is reusable, but the beverage clarity deteriorates due to insufficiently fine pores
Solution Approach 1:
The filter screen is made of porous material with specifically fine pores that allow water and dissolved coffee solids to pass through while retaining coffee grounds. The fine pore structure of the stainless steel or plastic mesh provides beverage clarity comparable to paper filters while maintaining reusability.
3Manufacturing precision
If the filter pores are made very fine, then the beverage clarity is improved, but the filter easily clogs and becomes difficult to clean
Solution Approach 1:
The filter screen is designed for easy recovery and cleaning. It can be detached from the filter holder and cleaned by simple rinsing with hot water from the outside and inside, allowing accumulated coffee grounds to be removed without difficulty despite the fine pore structure.
4Reliability
If the filter bowl is sealed at the bottom, then water retention during brewing is improved, but the filtering operation becomes more complex
Solution Approach 1:
The filter bowl is designed with dynamic positioning capability, allowing it to be moved between a starting position (where it is sealed at the bottom for water retention) and a filtering position (where it is raised to allow drainage). This dynamic adjustment enables both water retention during brewing and efficient filtering without requiring a permanently complex mechanism.
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
Enables the production of high-quality filter coffee with a simple and practical method, allowing for both small and large quantities, while maintaining the quality of the beverage and facilitating easy cleaning and maintenance of the device.
Implementation Method 1
a filter screen (13) which forms the bottom of the container and essentially occupies the entire bottom surface of the filter bowl (10)
Implementation Method 2
the filter bowl being supported under pressure on the bottom of the coffee container
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A device for preparing a filter coffee drink consists of a filter bowl (10) and a coffee container (11). In the starting position, the appropriately sized filter bowl (10) is located within the coffee container (11) and is supported on its bottom wall (15). In this position, boiling water is poured into the filter pot (10) and then ground roast coffee is added and mixed with the water by stirring or swinging the device. The filter pot (10) is then moved into an upper filtering position, in which the coffee drink passes through a filter sieve (13) on the bottom of the filter pot (10) into the coffee container (11).