Bottle Air Tube for Pressure Equalization
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Solution Overview
Problem
The issue of glugging, which causes erratic and splashy liquid flow when pouring from a bottle due to unbalanced air pressures between the atmospheric pressure outside and the air pressure inside the bottle, is not effectively addressed by existing devices, which often require significant materials, complicate recapping, or prevent resealing.
Innovation Solution
A device with air tubes that extend partially into the bottle to equalize atmospheric air pressure with the internal pressure, allowing air to enter as liquid exits, mitigating glugging and enabling smooth pouring at various angles, and can be integrated into the bottle design or used as an insert.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air tubes are extended significantly into the bottle to equalize pressure, then pressure equalization improves, but device complexity and material usage increase
Solution Approach 1:
The air tube is divided into multiple segments or sections along its length, with different diameters or configurations in different zones. This segmentation allows the tube to provide effective pressure equalization while reducing overall material usage and complexity compared to a single uniform tube design.
Solution Approach 2:
The air tube features local variations in its properties, such as changes in diameter, wall thickness, or permeability at specific locations along its length. These local quality changes optimize pressure equalization performance in different regions while minimizing overall device complexity and material requirements.
2Reliability
If air tubes extend above the bottle top to provide pressure equalization, then pressure balancing improves, but recapping and resealing become difficult or impossible
Solution Approach 1:
The air tube is nested within the bottle structure itself, with the tube extending into the bottle interior but terminating below the bottle top opening. This nesting arrangement allows the air tube to provide pressure equalization while remaining compatible with standard caps and sealing mechanisms, enabling easy recapping and resealing.
Solution Approach 2:
Instead of extending the air tube vertically above the bottle top, the design utilizes the horizontal or radial dimension by positioning the air tube openings strategically within the bottle neck or shoulder region. This dimensional change allows pressure equalization to occur without interfering with the vertical stacking and sealing function of the bottle cap.
3Reliability
If existing pressure equalization devices are used, then some pressure balancing is achieved, but they require significant materials and have performance issues
Solution Approach 1:
The air tube incorporates porous wall sections or porous filtering elements that allow air to pass through the tube walls. This porous material approach enables effective pressure equalization with significantly reduced material usage compared to traditional hollow tube designs, as the porous structure provides numerous small flow paths without requiring large tube diameters or lengths.
Solution Approach 2:
The design optimizes parameters such as tube diameter, wall thickness, and length to achieve effective pressure equalization with minimal material. By carefully selecting and adjusting these parameters, the device achieves reliable pressure balancing while using significantly less material than conventional designs.
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 device minimizes or prevents glugging, allowing liquids to be poured smoothly from bottles of various shapes and sizes without complicating recapping or resealing, and can be applied to different types of containers.
Implementation Method 1
A device with air tubes that extend partially into the bottle to equalize atmospheric air pressure with the internal pressure, allowing air to enter as liquid exits
Data Source
Figure 1
Figure 2~3
Figure 4A
AI summary
A device that assists with equalizing air pressure within a bottle with the atmospheric air pressure as liquid is being poured from the bottle and includes one or more relatively short air tubes. The air tubes are situated with an upper inlet rim of the air tubes located flush with or relatively near the bottle rim. Whether an insert or integrated into the manufacture of a container, the one or more air tubes that extend partially into the container allow air to pass into the container as the liquid exits the container. The pressure equalizer not only minimizes or prevents the common glugging effect, but it allows liquid from a bottle to be poured smoothly at any angle and orientation. A cap incorporating a detachable pressure equalizer is also described.