Capsule Sealing Member for Clearance Compensation Under Pressure
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Solution Overview
Problem
Existing beverage production systems face issues with inconsistent sealing due to user-dependent closure mechanisms, leading to potential pressure leakage and reduced extraction quality, especially in high-pressure applications like espresso-style coffee production.
Innovation Solution
A capsule-based beverage production system with a compressible sealing member that compensates for clearances between the enclosing member and the capsule, ensuring liquid flows only through the capsule and in contact with ingredients, using a sealing member that is effective in the defined closed state and can withstand pressures up to 20 bars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user-dependent closure mechanism is used, then the device is simple to operate, but the sealing consistency deteriorates due to variable user force
Solution Approach 1:
The capsule holder incorporates a self-adjusting mechanism with a spring-loaded sealing element that automatically compensates for clearance variations between the capsule and holder. When the capsule is inserted, the spring force pushes the sealing element against the capsule rim, creating a consistent seal without requiring precise user alignment or force control during the closing operation.
Solution Approach 2:
The sealing system uses a compliant sealing element with specific elastic properties that allow it to deform and adapt to clearance variations. The spring mechanism dynamically adjusts the sealing pressure parameter based on the actual gap between the capsule and holder, maintaining optimal sealing force across different insertion conditions.
2Manufacturing precision
If higher rotational force is applied to tighten the capsule holder, then clearance compensation improves, but the device complexity increases due to torque requirements
Solution Approach 1:
The system uses a self-adjusting spring-loaded sealing element that automatically compensates for clearance variations without requiring the user to apply variable torque. The spring force inherently adapts to the actual gap between capsule and holder, eliminating the need for complex torque control mechanisms.
Solution Approach 2:
The invention extracts the complexity of clearance compensation from the user's closing action and transfers it to the passive spring-loaded sealing mechanism. This separates the simple rotational closing motion from the complex clearance compensation function, which is handled automatically by the spring element.
3Ease of operation
If the capsule holder is insufficiently tightened, then ease of operation is maintained, but pressure leakage occurs reducing extraction quality
Solution Approach 1:
The spring-loaded sealing element automatically adjusts to maintain optimal sealing pressure. The spring force ensures that the sealing element remains in firm contact with the capsule rim throughout the extraction process, maintaining consistent pressure retention without requiring the user to control the tightening force.
Solution Approach 2:
The sealing system is designed to be dynamic rather than static, with the spring element continuously adapting to pressure changes and capsule position variations during operation. This dynamic adjustment ensures consistent sealing pressure is maintained throughout the extraction process, preventing pressure leakage.
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 solution ensures consistent sealing engagement, maintaining high extraction pressure and quality by compensating for clearance variations and wear, thereby improving the overall performance and longevity of the beverage production process.
Implementation Method 1
a compressible sealing member that compensates for clearances between the enclosing member and the capsule
Data Source
AI summary
A beverage forming system that includes a capsule for containing beverage ingredients and having an outer surface; a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, and an enclosing member transferable from an opened state to a defined closed state, in which the enclosing member encloses the outer surface of the capsule; and a sealing member associated with the capsule and which is compressible when engaged by the enclosing member in the closed state, wherein the sealing member is effective to compensate for the clearance between the enclosing member and the capsule which would otherwise exist when the enclosing member is in its defined closed state. Also, a method for producing a beverage using such a system.