Beverage Capsule Membrane Valve Dripping Prevention
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Solution Overview
Problem
Existing beverage preparation capsules experience dripping of liquid residues after dispensing due to gravity, which can cause burns and messes, and previous solutions have not effectively addressed this issue.
Innovation Solution
A beverage preparation capsule with a flow control device comprising a disc and membrane system that controls beverage flow during and after dispensing, using passages and membrane valves to prevent dripping by sealing the beverage outlet when pressure ceases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the capsule uses a simple open beverage outlet design, then the device complexity is reduced and manufacturing is easier, but liquid residues drip after dispensing causing safety and cleanliness issues
Solution Approach 1:
The beverage outlet is designed with a membrane that dynamically changes state between open and closed positions. During dispensing, the membrane opens to allow beverage flow; after dispensing, it automatically closes to prevent dripping. This dynamic behavior eliminates dripping without requiring complex mechanical sealing mechanisms.
Solution Approach 2:
The membrane valve system operates autonomously based on pressure differential. When dispensing pressure is present, the membrane opens; when pressure ceases, the membrane automatically closes without external control. This self-regulating mechanism prevents dripping while maintaining simple capsule structure.
2Reliability
If the capsule uses a flow control device with membrane and disc system, then dripping is prevented effectively, but the device complexity increases
Solution Approach 1:
A flexible membrane is used as the closing element of the beverage outlet. The membrane's elasticity allows it to respond automatically to pressure changes, opening during dispensing and closing afterward. This thin-film solution provides reliable dripping prevention with minimal structural complexity.
Solution Approach 2:
The flow control function is segmented into distinct components: a disc element, a membrane element, and passage structures. This segmentation allows each component to perform its specific function independently while working together to achieve reliable dripping prevention through coordinated operation.
3Object-affected harmful factors
If the membrane opens during dispensing and seals when pressure ends, then dripping is completely prevented, but the manufacturing precision requirements increase
Solution Approach 1:
The membrane acts as an intermediary element between the beverage flow and the external environment. It mediates the transition from open to closed state based on pressure conditions, providing effective sealing without requiring extremely tight manufacturing tolerances because its flexibility compensates for minor dimensional variations.
Solution Approach 2:
The membrane's physical state changes in response to pressure parameter variations. During dispensing, high pressure keeps the membrane open; when pressure drops, the membrane naturally returns to its closed sealing position. This parameter-driven behavior ensures complete sealing while accommodating normal manufacturing tolerances.
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 effectively prevents dripping by using a disc and membrane system that opens during dispensing and automatically seals when pressure ends, ensuring no liquid residues leak, enhancing safety and cleanliness.
Implementation Method 1
a membrane, which opens and closes in response to a pressure differential
Implementation Method 2
allow a pressurized fluid to be injected into the capsule
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A capsule (1) for preparing beverages in an automatic beverage preparation device, comprising an insert (9), which divides the capsule inner volume into an upper chamber (10) intended to contain a beverage preparation substance, and a lower chamber (11) for beverage collection and outflow. The insert (9) comprises a relatively rigid disc (16), which is provided with a number of passages (19) designed to establish a communication between the upper chamber (10) and the lower chamber (11), and has, on the lower face (18) of the disc (16) facing the lower chamber (11), some beverage outflow channels (21) communicating with the upper chamber (10) through the passages (19). The insert (9) further comprises a membrane (22) permanently connected to the lower face (18) of the disc (16) except for one or more areas (18a) so as to define, together with the areas (18a), respective membrane valves (23) configured to open under the effect of the beverage pressure, so that the beverage flows out from the upper chamber (10) to the lower chamber (11), and to close again when the effect of the beverage pressure ends.