Cold brew coffee brewing machine
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Solution Overview
Problem
Existing cold brew coffee brewing machines lack ease of use and efficiency, particularly in utilizing a hand pump and gravity for brewing, and do not provide a two-stage filtration process.
Innovation Solution
A cold brew coffee brewing machine design featuring an upper and lower chamber, with a filter unit secured between them, utilizing a hand pump to provide air pressure and gravity to force water through a combination of wire mesh and paper filters, allowing for efficient sediment-free coffee production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing cold brew coffee brewing machines are used, then coffee brewing is possible, but the operation is complex and inefficient
Solution Approach 1:
The device is divided into three main segments: upper chamber, filter unit, and lower chamber. Each segment can be independently assembled and disassembled, simplifying the overall operation while maintaining functional complexity. The segmentation allows users to easily clean and maintain each component separately.
Solution Approach 2:
The brewing process utilizes inversion of the entire device. After assembly, the device is inverted so that the upper chamber becomes the lower chamber and vice versa. This inversion simplifies the brewing mechanism by allowing gravity to naturally drive the water through the coffee grounds and filters without requiring complex pumping systems.
2Productivity
If traditional brewing methods are used, then coffee can be brewed, but the brewing efficiency is low
Solution Approach 1:
The device incorporates a hand pump that introduces air pressure into the upper chamber. This pneumatic pressure forces water through the coffee grounds and filters more rapidly than gravity alone, significantly improving brewing efficiency and reducing the time required to prepare cold brew coffee.
Solution Approach 2:
The device changes the pressure parameter during brewing. By introducing air pressure through the hand pump, the system transitions from low-pressure gravity-driven flow to high-pressure forced flow, dramatically increasing the brewing rate and productivity.
3Reliability
If single-stage filtration is used, then the brewing process is simple, but the beverage contains sediment
Solution Approach 1:
The filtration system is segmented into two distinct filter units with different mesh sizes. The first filter unit captures larger coffee grounds and debris, while the second filter unit captures finer particles. This segmentation of the filtration function achieves superior beverage quality without requiring a single overly complex filter system.
Solution Approach 2:
Different regions of the filtration system have different filter qualities. The first filter unit uses a coarser filter medium suitable for capturing large particles, while the second filter unit uses a finer filter medium for capturing smaller particles. This local differentiation of filter quality optimizes the filtration process for each stage, producing sediment-free coffee.
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 easy operation, efficient coffee brewing using both gravity and air pressure, and produces a sediment-free beverage through a two-stage filtration process, making it user-friendly and effective.
Implementation Method 1
A hand pump may be connected to the filter unit and may provide air pressure to the upper chamber
Implementation Method 2
Both gravity and air pressure created by the hand pump may be used to force the water through the filter unit
Implementation Method 3
A filter unit may be secured between the upper chamber and the lower chamber when the coffee brewing machine is in use
Data Source
AI summary
A cold brew coffee brewing machine is provided. The cold brew coffee brewing machine may have an upper chamber and a generally identical lower chamber wherein the upper chamber and the lower chamber may be, for example, common mason jars. A filter unit may be secured between the upper chamber and the lower chamber when the coffee brewing machine is in use. A hand pump may be connected to the filter unit and may provide air pressure to the upper chamber. The lower chamber may then be secured to the filter unit and the entire device inverted. Both gravity and air pressure created by the hand pump may be used to force the water through the filter unit so that the drinkable coffee enters the lower chamber.