Rotating Basket Brewing Apparatus for Rapid Cold Coffee Extraction
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Solution Overview
Problem
Current methods for brewing cold coffee are time-consuming, requiring several hours, and involve complex apparatuses that are costly and difficult to clean, with existing solutions failing to significantly reduce preparation time and simplify the process.
Innovation Solution
A brewing apparatus featuring a rotating basket with blades inside a brew container that generates an axial flow of water to enhance extraction efficiency, combined with a filtering packet and a pinching valve for controlled brewing and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cold water extraction is performed using classical dripping or steeping methods, then the beverage can be prepared with simple apparatus, but the extraction time lasts several hours
Solution Approach 1:
The patent applies the dynamics principle by transforming the static steeping process into a dynamic one. The basket rotates continuously during extraction, creating constant motion and agitation of the coffee grounds. This dynamic movement enhances water-coffee contact and accelerates extraction, reducing preparation time from several hours to approximately 30 minutes while maintaining simple apparatus design.
Solution Approach 2:
The patent implements periodic action through the rotational movement of the basket. The continuous rotation creates periodic agitation and circulation of water through the coffee grounds, ensuring consistent extraction throughout the brewing process. This periodic motion prevents channeling and ensures uniform contact between water and coffee, achieving rapid extraction without complex equipment.
2Device complexity
If the steeping method is used to brew cold coffee, then the extraction can be performed with basic equipment, but the removal of coffee cake and cleaning becomes time-consuming
Solution Approach 1:
The patent applies segmentation by separating the coffee grounds containment function from the brewing chamber. The grounds are enclosed in a removable filtering packet or cartridge that can be easily extracted from the basket. This segmentation allows the user to remove the spent coffee by simply taking out the packet, eliminating the need for manual coffee cake removal and thorough rinsing of the brewing chamber.
Solution Approach 2:
The patent implements the extraction principle by removing the coffee grounds containment system from the main brewing structure. The filtering packet or cartridge is a separate, removable component that holds the coffee grounds during brewing and can be easily taken out after brewing. This design extracts the cleaning task from the brewing process, as the removable packet can be disposed of or rinsed separately without requiring cleaning of the basket and chamber.
3Ease of operation
If a packet of coffee ground is used held in a basket, then the removal of coffee ground becomes easier, but the apparatus structure becomes more complex
Solution Approach 1:
The patent applies universality by designing the basket to serve multiple functions: it holds the filtering packet during brewing, rotates to enable rapid extraction, and facilitates easy removal of the packet after brewing. The basket is a simple, open-mesh structure that performs containment, agitation, and extraction functions without requiring additional complex components. This multi-functionality achieves easy coffee ground removal while maintaining apparatus simplicity.
4Loss of time
If agitation devices such as stirrers or pumps are added to reduce brewing time, then the extraction speed increases, but the apparatus becomes more expensive and complex
Solution Approach 1:
The patent merges the agitation function with the brewing container structure itself. The basket, which is necessary for holding the coffee grounds, is designed to rotate and provides the agitation function through its motion. The blades attached to the basket further enhance this agitation effect. By combining the containment function (basket) with the agitation function (rotation and blades), the patent achieves rapid extraction without requiring separate, expensive pump or stirrer devices.
Solution Approach 2:
The patent implements self-service by designing the basket to automatically provide agitation during its normal operation. As the basket rotates to facilitate brewing and water circulation, the blades attached to it automatically create turbulence and agitation in the water-coffee mixture. This self-agitation eliminates the need for external motors, pumps, or stirrers, reducing apparatus complexity and cost while achieving rapid extraction.
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 rapid cold brewed coffee preparation in under 30 minutes with reduced turbidity and simplified handling and cleaning, using a cost-effective and user-friendly apparatus.
Implementation Method 1
A brewing apparatus featuring a rotating basket with blades inside a brew container that generates an axial flow of water to enhance extraction efficiency
Implementation Method 2
The present invention relates to apparatus and method to brew infusion material, in particular roast and ground coffee with cold water
Data Source
AI summary
The invention concerns an apparatus (1) for brewing infusion material, said infusion material being hold in a filtering packet (2), said apparatus comprising: —a brew container (11) configured for holding water and a filtering packet of infusion material, and 10—a basket (12) configured for holding the filtering packet and configured for being hold in the brew container, and—an actuator (13) to rotate the basket inside the brew container.