Capsule Reinforcing Element Limits Membrane Deformation
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Solution Overview
Problem
Existing beverage capsules with micro-perforated flexible membranes struggle to maintain suitable compression of powdered food substances during the brewing process, leading to suboptimal beverage quality compared to rigid or semi-rigid water flow distributing units.
Innovation Solution
The capsule incorporates a reinforcing element positioned between the water flow distributing unit and the infeed wall, which limits the deformation of the micro-perforated membrane, ensuring consistent compression of the food substance and maintaining beverage quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a micro-perforated flexible membrane is used as a water flow distributing unit, then production cost is reduced, but the ability to maintain suitable compression of powdered food substance deteriorates
Solution Approach 1:
The invention combines a flexible micro-perforated membrane with a rigid or semi-rigid supporting structure (such as a mesh, lattice, or framework) to create a composite water flow distributing unit. This composite structure maintains the cost advantage of flexible membranes while gaining the compression-stabilizing properties of rigid structures, thereby resolving the contradiction between low production cost and reliable compression maintenance.
Solution Approach 2:
The supporting structure acts as an intermediary element between the flexible membrane and the food substance. It provides mechanical support to the membrane, preventing excessive deformation during brewing, while allowing the membrane to still distribute water flow effectively. This intermediary structure enables the system to achieve both low cost and reliable compression maintenance.
2Reliability
If a rigid or semi-rigid water flow distributing unit is used, then beverage quality is improved through maintained compression, but production cost increases
Solution Approach 1:
By creating a composite structure that integrates rigid/semi-rigid support elements with flexible membrane components, the invention achieves the compression maintenance benefits of rigid structures while reducing material costs and manufacturing complexity compared to fully rigid units.
Solution Approach 2:
The supporting structure is strategically positioned only where needed to maintain compression criticality, rather than making the entire water flow distributing unit rigid. This localized application of rigidity reduces material costs and manufacturing complexity while preserving beverage quality.
3Adaptability or versatility
If the micro-perforated membrane deforms towards the infeed wall during water injection, then water distribution may be affected, but maintaining compression is compromised
Solution Approach 1:
The composite structure combines the flexibility of the membrane with the dimensional stability of the supporting framework. The framework limits membrane deformation to acceptable ranges while preserving the membrane's ability to flex and distribute water, thus maintaining both adaptability and compression consistency.
Solution Approach 2:
The supporting structure is pre-configured in the water flow distributing unit to provide preemptive mechanical support. This preliminary structural arrangement prevents excessive membrane deformation before it occurs during water injection, ensuring consistent compression from the start of the brewing process.
Data Source
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AI summary
This disclosure relates to a capsule for making a beverage, containing a food substance, wherein a water flow distributing unit (10), permeable for the water flow, is placed inside the main body (2) of the capsule, and is positioned between the infeed wall (36) for the water and the food substance, and wherein there is also a reinforcing element (12) which is placed inside the main body (2) between the infeed wall (36) and the water flow distributing unit (10), the reinforcing element (12) being configured to limit, in use, a deformation of the water flow distributing unit (10) towards the infeed wall (36).