Sealed Beverage Capsule Structure for Pressure Brewing and Freshness
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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 various 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 liquid distribution and brewing under pressure, while maintaining freshness and accommodating different quantities of infusible material, and includes a sealing foil to prevent tampering and enhance structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
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 layers: a permeable support structure at the bottom, infusible material (coffee grounds) in the middle, and a sealed cover with pierceable inlet at the top. This segmentation allows fine grinding for fast extraction while the structured layers manage water flow and pressure separately.
Solution Approach 2:
A permeable support structure acts as an intermediary between the fine coffee grounds and the brewing chamber. It supports the densely packed fine grounds while allowing water to pass through, reducing hydraulic resistance without compromising extraction efficiency.
2Reliability
If a sealed capsule design is used to preserve freshness and prevent tampering, then reliability is improved, but device complexity increases
Solution Approach 1:
The capsule employs a nested structure where the infusible material is contained within the capsule body, which is itself contained within the brewing chamber during operation. The sealed capsule acts as a nested unit that preserves freshness while simplifying the overall system by integrating sealing, containment, and dispensing functions.
Solution Approach 2:
The capsule is designed as a disposable sealed unit that is discarded after single use. This eliminates the need for complex cleaning and maintenance mechanisms, reducing device complexity while ensuring reliability through consistent sealing and freshness preservation until use.
3Ease of operation
If the capsule is designed to be disposable for ease of cleaning, then ease of operation is improved, but loss of substance increases
Solution Approach 1:
The capsule is designed as an inexpensive disposable component made from cost-effective materials. The low material cost and simple construction enable single-use disposal without significant resource waste, while providing complete cleaning simplicity by eliminating the need to clean the capsule itself.
4Adaptability or versatility
If the capsule needs to accommodate various serving sizes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The capsule design allows for parameter changes in the amount of infusible material contained within the sealed capsule. Different capsule variants can hold different quantities of coffee grounds to accommodate various serving sizes, while the basic capsule structure remains consistent, avoiding increased 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 capsule design is inexpensive to manufacture, easy to use, preserves the freshness of the infusible material, and allows for brewing under pressure with minimal maintenance, accommodating various serving sizes and ensuring the brewed beverage is isolated from the brewing apparatus, thus meeting all market requirements.
Implementation Method 1
The seal ruptures against the dispensing structure as the capsule seats in the capsule receiving station thereby to enable brewed beverage to pass from the dispenser structure directly to the beverage receptacle
Implementation Method 2
a water distribution plate with apertures, which allows for efficient liquid distribution and brewing under pressure
Implementation Method 3
A sealed capsule design featuring a capsule base with a permeable support structure
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.