Pressure-activated beverage cap for beverage filter press
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Solution Overview
Problem
Conventional beverage caps with pressure-activated valves are unsuitable for paper filters due to tearing and blowout issues under high pressures, limiting their use and longevity, and failing to provide uniform pressure distribution for improved beverage making.
Innovation Solution
A beverage cap design featuring a pressure-activated valve with multiple protrusions on the bottom surface to support filters, distributing pressure uniformly and preventing blowout, along with a removable valve insert providing additional support to the filter above the valve, allowing for the use of paper filters and enhancing the brewing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional pressure-activated beverage caps with radial ridges are used, then high pressure beverage making is enabled, but paper filters tear and blowout under high pressure
Solution Approach 1:
The cap interior surface is modified with localized features including radial ridges for flow direction, circumferential ridges for filter support, and a recessed region above the valve to distribute pressure. These localized structural modifications create areas of different mechanical properties throughout the cap interior, providing both high pressure capability and filter protection.
Solution Approach 2:
A paper filter holder is introduced as an intermediary component between the paper filter and the cap structure. The holder supports the filter in a recessed region, preventing direct contact between the filter and high-pressure zones, thereby protecting the filter from blowout while maintaining beverage flow.
2Power
If conventional radial ridges are used to direct flow, then beverage making at increased pressure is facilitated, but the valve undergoes wear and tear over time
Solution Approach 1:
The cap interior is designed with localized pressure distribution features including circumferential ridges and a recessed region above the valve. These features concentrate and distribute pressure away from the valve stem, reducing direct pressure exposure and wear on the valve mechanism while maintaining effective beverage extraction pressure.
3Adaptability or versatility
If metal filters are used with conventional caps, then high pressure beverage making is possible, but paper filters cannot be used due to tearing and blowout
Solution Approach 1:
The cap design incorporates multiple structural features (radial ridges, circumferential ridges, recessed regions) that work together to support various filter types including paper, metal, and mesh filters. The design universally accommodates different filter materials by distributing pressure and providing structural support throughout the filter area, enabling paper filters to be used with pressure-activated valves.
4Reliability
If uniform pressure distribution is implemented, then filter blowout is prevented, but beverage making efficiency may be reduced
Solution Approach 1:
The cap design creates localized zones with different pressure characteristics: radial ridges direct flow efficiently toward the valve, circumferential ridges provide filter support, and recessed regions distribute pressure uniformly. This combination maintains high beverage making efficiency while preventing filter blowout through strategic pressure distribution.
Solution Approach 2:
The paper filter holder acts as an intermediary that supports the filter in a recessed region, allowing uniform pressure distribution across the filter while maintaining efficient beverage flow through the valve. This intermediary structure prevents blowout without sacrificing brewing efficiency.
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 design prevents filter blowout and ensures uniform pressure distribution, resulting in improved filtering and flavor, enabling the use of paper filters while maintaining cap longevity and ease of use.
Implementation Method 1
The pressure-activated valve is disposed within the main body and the pressure-activate valve is configured in a closed configuration when pressure within the cavity during filtering with the press is less than a minimum pressure and to assume an open configuration to facilitate fluid flow therethrough when the pressure during filtering with the press is greater than the minimum pressure
Implementation Method 2
The plurality of protrusions are discontinuous and distributed across the interior surface so as to distribute pressurized fluid flow within the cap and inhibit blow when used with a paper filter
Data Source
AI summary
A beverage cap with pressure-activate valve for use with a beverage filter press having a hollow cylinder and removable piston that when pressed downward forces liquid through the cylinder and beverage cap into an open vessel. The beverage cap includes a plurality of protrusions that are discontinuous and distributed through the cavity of the cap so as to improve filter support and distribute pressure more uniformly through the cavity and along the filter, thereby allowing use of thin paper filters and avoiding tearing or blow out. The beverage cap can include a removable valve insert that includes a valve body supporting a movable vale and one or more support members that further support the filter at a central valve region, further reinforcing the filter to avoid blow out of paper filters. The beverage cap and beverage cap are suited for pressing of tea or coffee beverages, especially espresso.