Sealed Beverage Capsule With Controlled Flow and Freshness Retention
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Solution Overview
Problem
Existing beverage brewing capsules fail to meet multiple market requirements, including ease of use, cost-effectiveness, freshness preservation, tamper-proofing, rigidity for storage, disposability, and compatibility with different serving sizes, while also posing challenges with sealing and maintenance in both residential and commercial environments.
Innovation Solution
A sealed capsule design featuring a capsule base with a permeable support structure, a cover with a pierceable inlet, and a water distribution plate with apertures, which allows for efficient brewing under pressure while maintaining freshness and accommodating various quantities of infusible material, and is designed for easy manufacturing and minimal maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If coffee grounds are ground more finely to expose larger surface area for extraction, then brewing speed is improved, but hydraulic resistance increases making water flow difficult
Solution Approach 1:
The capsule is divided into multiple functional segments: a permeable support structure at the bottom for drainage, a water distribution plate with apertures for controlled water delivery, and a filter layer. This segmentation allows fine coffee grounds to be contained while maintaining proper water flow paths separate from the extraction zone, reducing hydraulic resistance despite fine grinding.
Solution Approach 2:
A water distribution plate with controlled apertures acts as an intermediary between the water source and coffee grounds. It regulates water flow rate and distribution, preventing excessive pressure buildup while ensuring adequate water delivery through fine grounds, thus mediating between brewing speed requirements and hydraulic resistance.
2Reliability
If a sealed capsule design is used to preserve freshness, then freshness preservation is improved, but sealing complexity and manufacturing difficulty increase
Solution Approach 1:
The capsule base serves multiple functions: it contains coffee grounds, provides structural support, incorporates a permeable support structure for drainage, and forms part of the sealing system. This multi-functionality reduces the number of separate components needing sealing, simplifying manufacturing while maintaining freshness preservation.
Solution Approach 2:
The capsule uses a pierceable seal design that changes its state from sealed to open upon insertion into the brewing device. The seal maintains its integrity during storage and handling, then undergoes a controlled parameter change (from sealed to pierced) during use, enabling simple manufacturing with reliable freshness preservation.
3Ease of operation
If the capsule is designed to be disposable for ease of use and cleaning, then ease of operation is improved, but cost increases and environmental impact worsens
Solution Approach 1:
The capsule is designed as a disposable component with simple construction using inexpensive materials. The permeable support structure and filter are integrated into a single-use unit that can be easily manufactured at low cost, making the disposable approach economically viable and simplifying cleaning requirements for the brewing device.
Solution Approach 2:
Multiple functional elements (coffee containment, filtration, water distribution, sealing) are merged into a single integrated capsule unit. This consolidation eliminates the need for separate cleaning of multiple components in the brewing device, improving ease of operation while the low-cost design mitigates the impact of increased material consumption.
4Stability of the object's composition
If the capsule structure is made rigid for storage and handling, then stability is improved, but compatibility with different serving sizes decreases
Solution Approach 1:
The capsule incorporates a flexible membrane or elastomeric seal that can deform to accommodate different brewing chamber configurations and serving sizes. This dynamic element maintains structural integrity for stable storage and handling, yet adapts its shape during brewing to ensure proper sealing and water distribution across various capsule volumes.
Solution Approach 2:
The capsule uses flexible sealing membranes and thin-walled construction that provide sufficient rigidity for storage stability while allowing adaptation to different brewing chamber geometries and serving sizes. The flexible materials enable the capsule to maintain its seal under varying pressure conditions without requiring rigid, size-specific designs.
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 capsule design ensures efficient brewing, preserves the freshness of the infusible material, is easy to use, and requires minimal maintenance, while allowing for different serving sizes and easy manufacturing, meeting the diverse needs of both residential and commercial brewing applications.
Implementation Method 1
apparatus for delivering liquid under pressure to the capsule
Implementation Method 2
capsule base with a permeable support structure, a cover with a pierceable inlet
Data Source
AI summary
A sealed capsule for use in apparatus including a capsule receiving station and a water delivery system for brewing a hot beverage in which a hot liquid under pressure infuses a material. A capsule base has a concave bottom floor with angularly spaced structural ribs that form channels for directing brewed beverage to a sharpened spout. A collar surrounds the dispensing spout. A foil attaches to the collar to overlie the spout. A filter lies on the structural ribs. Infusible material lies on the filter. A water distribution plate overlies the infusible material. A cover closes the base unit and includes a water inlet. As the capsule seats in the capsule receiving station, the foil seal is forced over the sharpened spout to rupture and enable brewed beverage to be dispersed. A probe of the water delivery system also penetrates the cover to direct water into the capsule without contacting the infusible material or the brewed beverage.