Double Container Hydrophobic Filter Air Vent Design
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Solution Overview
Problem
Delamination containers face issues with water entering through atmospheric air introduction holes during shower cooling, leading to potential bacterial growth and valve operation problems due to water ingress into the intermediate space between the outer shell and inner bag.
Innovation Solution
A double container design featuring a hydrophobic filter made of non-woven polypropylene or a stacked hydrophobic microporous membrane and non-woven fabric, which allows air penetration while preventing water entry through the atmospheric air introduction hole, ensuring that water does not enter the intermediate space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the atmospheric air introduction hole is left open to allow air outflow/inflow, then valve operation is enabled, but water can enter the intermediate space causing bacterial growth and adverse effects
Solution Approach 1:
The patent applies a hydrophobic filter with microporous structure to the atmospheric air introduction hole. The porous material allows air molecules to pass through while the hydrophobic surface tension properties prevent water liquid from penetrating the pores, thus enabling air outflow/inflow while blocking water entrance into the intermediate space
Solution Approach 2:
The hydrophobic filter acts as an intermediary component between the external environment and the intermediate space. It mediates the interaction between air and water by selectively allowing air passage while blocking water, thus protecting the intermediate space from water damage while maintaining valve operation functionality
2Temperature
If shower cooling is performed to cool the container, then temperature is reduced, but water adheres to the container and enters the intermediate space through the air introduction hole
Solution Approach 1:
The hydrophobic filter's microporous structure combined with hydrophobic surface properties allows it to block water that adheres to the container during shower cooling, while still permitting air flow for pressure equalization and valve operation
Solution Approach 2:
The invention converts the potentially harmful water adherence during shower cooling into a beneficial situation by using the hydrophobic filter to automatically repel the water, thus protecting the intermediate space without requiring additional cooling measures or water removal mechanisms
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
Effectively prevents water entry through the atmospheric air introduction hole during shower cooling, maintaining food sanitation and proper valve operation by allowing air inflow while blocking water, thus avoiding adverse effects on the container's internal space.
Implementation Method 1
a hydrophobic filter configured to allow air penetration and block water is provided to close the air introduction hole
Implementation Method 2
the hydrophobic filter such as non-woven fabric made of polypropylene exhibits properties allowing air penetration while not allowing water penetration
Data Source
AI summary
Provided is a double container (1) configured so that water entrance through an atmospheric air introduction hole (15) can be reliably prevented and that an adverse effect due to water entrance into an intermediate space (21) between an outer shell (11) and an inner bag (12) can be avoided. The double container (1) has the outer shell (11) and the inner bag (12). The inner bag (12) contracts in association with a decrease in contents housed in the inner bag (12). The outer shell (11) is provided with the air introduction hole (15). Further, a hydrophobic filter configured to allow air penetration and block water is provided to close the air introduction hole (15).