Pressure-Responsive Beverage Capsule Valve to Limit Post-Brew Dripping
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Solution Overview
Problem
The issue of residual liquids and solids leaking from capsules after beverage production, leading to cross-contamination in machines used for different beverages, is exacerbated by air entering the capsule, causing dripping and solid dispersion.
Innovation Solution
A capsule design with valve means that selectively block the flow path to prevent air and fluid flow after the production process, using internal perforation and self-sealing mechanisms to ensure the beverage outlet remains closed until pressure inside the compartment exceeds ambient pressure, and incorporating features like a contoured plate with pins or pyramids to control the flow and a flexible lip for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the capsule is opened at the beverage outlet side to allow beverage flow, then the beverage can be dispensed, but air enters the capsule causing residual liquid and solid to drip or spray out from the inlet side
Solution Approach 1:
The capsule employs dynamic valve means that automatically open during beverage dispensing to allow flow, then automatically close after dispensing to prevent dripping. The valve transitions from a closed state during insertion to an open state during beverage flow, and back to closed state after dispensing, adapting its position based on the operational phase.
Solution Approach 2:
The capsule separates the inlet side and outlet side functions through distinct mechanisms: the outlet side has valve means for controlled opening/closing, while the inlet side has perforation means for opening. This segmentation allows independent control of each side's opening behavior to prevent cross-contamination while enabling beverage flow.
2Productivity
If water injection pressure is increased to improve beverage extraction, then extraction efficiency improves, but the capsule structure must withstand higher pressure
Solution Approach 1:
The capsule performs preliminary opening actions in a controlled sequence: first the inlet side is opened by perforation means, then the outlet side valve opens in response to pressure. This staged opening prevents sudden pressure releases and allows the capsule to gradually accommodate injection pressure, improving both extraction efficiency and structural safety.
Solution Approach 2:
The valve means responds to pressure parameter changes by automatically opening when injection pressure exceeds ambient pressure, and automatically closing when pressure equalizes. This dynamic parameter-based control optimizes beverage extraction during high-pressure injection while preventing dripping during low-pressure phases.
3Reliability
If the capsule uses hermetic sealing during transport, then volatile substances are preserved, but the capsule requires additional opening mechanisms for beverage production
Solution Approach 1:
The capsule employs self-opening mechanisms that activate automatically during beverage production: the inlet face opens via perforation means when water is injected, and the outlet face opens via valve means in response to internal pressure. This self-service approach maintains hermetic sealing during transport while enabling automatic opening during use without requiring additional complex mechanisms.
Solution Approach 2:
The valve means acts as an intermediary between the hermetically sealed capsule interior and the external environment. It remains closed during transport to preserve volatile substances, then mediates controlled opening during beverage dispensing, and finally closes again to prevent dripping, bridging the requirements for both preservation and dispensing.
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
This design significantly reduces the leakage of liquids and solids from the capsule, minimizing cross-contamination by maintaining an airtight seal and ensuring smooth beverage flow, thus enhancing the cleanliness and operational efficiency of beverage production machines.
Implementation Method 1
The valve means can comprise a flexible lip arranged to engage in closure the adjacent wall of the capsule and be biased in opening by effect of the pressure so as to disengage from the adjacent wall.
Implementation Method 2
a flexible lip arranged to engage in closure the adjacent wall of the capsule and be biased in opening by effect of the pressure so as to disengage from the adjacent wall
Data Source
Figure 1~2
Figure 3~4
Figure 5a~6c
AI summary
The invention relates to a capsule (1) containing ingredients for producing a beverage, wherein - the ingredients are housed in a compartment (3), - internal perforation means (5) are provided designed for opening the lower face (4) of the ingredient compartment (3) by having, caused by pressure inside ingredient compartment (3), the lower face (4) act against the internal perforation means (5), the capsule (1) being provided with valve means (15) arranged for selectively blocking the flow path from the lower face (4) of the ingredient compartment (3) to a beverage outlet ( 7) of the capsule (1).