Vented Spout With Segregated Air And Liquid Ducts
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Solution Overview
Problem
Existing vented spouts for liquid-storage containers face limitations in efficiently managing air flow and liquid transfer, particularly in preventing accidental openings by children and ensuring seamless operation across various liquid types, including hazardous volatile liquids.
Innovation Solution
A vented pouring spout design featuring a dual internal passageway system with a built-in shutoff valve and child-resistant closure, where the air duct is smaller than the liquid duct, and a biasing element maintains the valve in a closed position, allowing for controlled liquid flow and air entry, while the child-resistant mechanism prevents accidental openings by young children.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vented spout is designed with a shutoff valve to control liquid flow, then the reliability of liquid transfer is improved, but the device becomes more complex and may be accidentally opened by children
Solution Approach 1:
The spout is divided into two separate members: a first member containing the valve mechanism and a second member containing the ducts. This segmentation allows the valve to be integrated into the spout structure while maintaining separate functional zones for liquid and air flow control, reducing overall complexity while preserving reliability
Solution Approach 2:
The shutoff valve is merged with the spout body itself, where the valve member is formed as an integral part of the first member. This integration eliminates the need for separate valve components, reducing device complexity while maintaining effective liquid flow control through the constricted opening
2Productivity
If a vented spout includes an air vent to admit air during liquid transfer, then the productivity of liquid pouring is improved, but the risk of accidental opening by children increases
Solution Approach 1:
The first member containing the valve is nested within the second member containing the ducts. The valve member sits within the first main body, which is itself positioned within the second member. This nested structure creates a compact, integrated design where the air vent functionality is embedded within the spout structure, making it less accessible to children while maintaining pouring productivity
Solution Approach 2:
The valve member is designed to be movable between closed and open positions, allowing dynamic control of liquid flow. The biasing element provides automatic return to closed position, creating a dynamic system that responds to user interaction while preventing accidental opening, thus protecting against harmful factors while maintaining productivity when needed
3Reliability
If the air duct is made smaller in cross section than the liquid duct, then the reliability of air flow control is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The air duct is provided with a constricted opening at a specific location within the first main body, creating a localized restriction in the air flow path. This local quality change allows precise control of air flow characteristics without requiring the entire air duct to be manufactured with high precision, as only the constricted opening area demands tight tolerances
Solution Approach 2:
The spout is segmented into two members with the air duct and liquid duct as separate, segregated pathways. This segmentation allows independent optimization of each duct's dimensions and manufacturing tolerances, reducing the overall precision requirements while maintaining reliable air flow control through the constricted opening in the air duct
4Reliability
If a biasing element is added to maintain the valve in closed position, then the reliability of accidental opening prevention is improved, but the device complexity increases
Solution Approach 1:
The biasing element is merged into the spout structure, positioned between the first member and second member. This integration allows the biasing mechanism to be part of the overall spout assembly rather than a separate component, reducing device complexity while maintaining reliable prevention of accidental opening through continuous biasing force on the valve member
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 spout ensures fast and constant liquid flow with automatic shut-off, minimizes spillage risks, and securely prevents children from opening the valve, making it suitable for hazardous liquids and various container types.
Implementation Method 1
a biasing element positioned between the first member and the second member to urge the valve in the closed position
Implementation Method 2
a vented pouring spout for a liquid-storage container... during a gravity transfer of liquids from a container into a receptacle
Implementation Method 3
an air duct through which an air circuit passes when air enters the container
Data Source
AI summary
The spout includes a first and a second member. The first member includes an elongated and generally tubular first main body having two segregated and parallel internal passageways, one being an air duct and the other being a liquid duct. Both ducts are substantially straight and substantially unobstructed along the entire first main body but the air duct ends with at least one constricted opening through which the air circuit exits the air duct. A valve is juxtaposed to the rear end of the first main body and is made integral therewith. The valve engages a valve seat provided at the rear end of a tubular inner conduit inside the second member and in which a rear section of the first main body is slidingly axially movable. The valve is normally maintained closed by a biasing element. The spout may be provided with a child resistant closure (CRC) device.