Three-Position Check Valve Assembly for Vacuum Envelope Airflow Control
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Solution Overview
Problem
Current three-function valves are either complex, require tools for operation, or lack user-controlled flow management, making them unsuitable for applications requiring flexibility and ease of use in packaging and medical contexts.
Innovation Solution
A three-piece assembly comprising a twisting selection piece with unique geometry, a flexible silicone membrane, and a mounting base with projections to prevent jamming, allowing for three functions: sealing, bidirectional airflow, and unidirectional air flow management without additional valves or tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a three-function valve is required to seal, allow bidirectional airflow, and allow unidirectional airflow, then the device complexity increases, but the ease of operation deteriorates when tools are required
Solution Approach 1:
The valve is segmented into three distinct functional positions (sealed position, bidirectional flow position, and check valve position) that can be selectively engaged. Each position is achieved through a separate controllable element that can be independently actuated, allowing the valve to provide three different flow management functions while maintaining simple operation for each function
Solution Approach 2:
The valve assembly is designed as a universal component that can perform three different functions (sealing, bidirectional airflow, and unidirectional airflow) within a single device structure. This multi-functionality eliminates the need for multiple separate valves or tools, providing adaptability while maintaining ease of operation through integrated design
2Reliability
If separate valves are used for air injection and vacuum, then the reliability improves, but the device complexity increases
Solution Approach 1:
The patent combines air injection valve and vacuum valve functions into a single integrated valve assembly. The merged design uses shared internal passages and a unified control mechanism to achieve the same reliability as separate valves while reducing device complexity and the number of components required
Solution Approach 2:
A single valve assembly is designed to universally handle both air injection and vacuum functions through internal passage configuration. This multi-functional valve provides reliable flow control for both operations without requiring separate dedicated valves, thereby reducing overall device complexity
3Productivity
If internal jamming media is used in vacuum bags, then the productivity improves, but the reliability deteriorates due to potential valve blockage
Solution Approach 1:
The valve internal passages are designed with specific local qualities including larger cross-sectional areas and smooth surface finishes in critical flow regions. These localized design features prevent jamming media from adhering to or blocking the passages, maintaining reliable valve functionality while allowing the use of internal jamming media for improved packaging productivity
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
Enables user-modulated flow management with a single assembly, preventing internal jamming and allowing for airtight seals, bidirectional airflow, and unidirectional air flow without requiring additional components or tools, enhancing usability in packaging and medical applications.
Implementation Method 1
a flexible membrane, wherein the flexible membrane includes a wide, thin circular piece
Implementation Method 2
the base defines a plurality of small holes and at least one larger hole in the center of the base
Data Source
AI summary
The present disclosure relates to a three-function check valve that in one embodiment is attached to a vacuum bladder full of media (foam beads). This three-function check valve is comprised of a selection piece, silicone membrane, and a mounting base all in one sub-assembly. Furthermore, this valve has three positions with three distinct functions. These functions are to create an airtight seal, allow for free flow in and out of the bladder, and restrict flow of air based on a differential pressure.