Cold Coffee Brewer with Rotating Holder to Reduce Brewing Time
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Solution Overview
Problem
Conventional cold coffee brewing methods require excessive time, typically ten hours, to achieve desired flavor through steeping in unheated water.
Innovation Solution
A cold coffee brewing device with a rotating brewing material holder submerged in water, oscillating between 30 and 90 cycles per minute and 90 to 270 degrees of rotation, significantly reducing brewing time to as little as one hour.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional cold brewing steeping method is used, then desired coffee flavor is achieved, but brewing time is excessive (ten hours)
Solution Approach 1:
The brewing material holder is made rotatable to dynamically move the brewing material through water, transforming the static steeping process into a dynamic extraction process. This motion increases contact between water and brewing material, accelerating flavor extraction and reducing brewing time from ten hours to one hour while maintaining flavor quality.
Solution Approach 2:
The system applies rotational motion to the brewing material holder, creating mechanical movement that enhances mass transfer between brewing material and water. This mechanical action disrupts boundary layers and improves extraction efficiency, achieving desired flavor in significantly reduced time.
2Productivity
If brewing material is kept stationary in water, then simple brewing process is maintained, but brewing time is excessive
Solution Approach 1:
The brewing material holder is designed with rotational capability, allowing the brewing material to move through water. This dynamic element accelerates extraction and improves brewing productivity while adding only a simple rotational mechanism to the device structure.
Solution Approach 2:
The lid serves multiple functions: it seals the container, provides structural support for the brewing material holder, and incorporates the rotation mechanism. This multi-functionality increases brewing speed without proportionally increasing overall device complexity.
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 efficiently reduces cold brewing time from ten hours to one hour by ensuring consistent movement of the brewing material in water, enhancing the brewing process without compromising flavor.
Implementation Method 1
Movement of the brewing material submerged in water substantially reduces the time required for cold brewing
Implementation Method 2
Motion of the brewing material in the water reduced cold brewing time from as much as ten hours to as little as one hour
Data Source
AI summary
A cold coffee brewing device reduces the time required to produce cold brewed coffee. The cold brewer includes a container, preferably transparent, and an elongated brewing material holder suspended from a lid of the container. The brewing material holder is enclosed in a mesh to retain brewing material in the brewing material holder. In one embodiment, the mesh is a fine nylon mesh or a 75 micron opening nylon mesh. The lid includes a mechanism to rotate the brewing material holder. The container is filled with water and the brewing material holder is filled with brewing material. Movement of the brewing material submerged in water substantially reduces the time required for cold brewing.