Deformable Lid Venting for Pressure Equalization in Fluid Containers
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Solution Overview
Problem
Existing sets for storing bodily fluids face challenges in efficiently removing fluid without manually venting due to pressure differences, which is cumbersome and risks spillage.
Innovation Solution
A set with a deformable lid and/or container that automatically adjusts to a vented position to equalize pressure, allowing fluid removal without manual intervention, featuring a ventilation element like a cam that creates a gap for air inflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid is removed to equalize pressure after fluid extraction, then air can enter the container to balance pressure difference, but the procedure becomes cumbersome and time-consuming
Solution Approach 1:
The ventilation element is designed to automatically equalize pressure without manual intervention. When negative pressure develops during fluid extraction, the ventilation element deforms or moves to create a gap, allowing air to enter and equalize pressure automatically, then returns to its original position to maintain the seal.
Solution Approach 2:
The ventilation element is designed to be deformable or movable, changing its state based on pressure conditions. Under negative pressure, it deforms to open a venting path; when pressure equalizes, it returns to its original position to close the path, providing dynamic pressure equalization.
2Reliability
If the lid is removed to vent the container, then pressure can be equalized, but the risk of accidentally spilling body fluids increases
Solution Approach 1:
The ventilation element automatically performs the venting function by deforming or moving in response to negative pressure, eliminating the need for manual lid removal and thereby preventing fluid spillage associated with opening the container.
Solution Approach 2:
The venting function is extracted from the lid itself and implemented as a separate ventilation element that can open and close independently, allowing pressure equalization without removing the lid from the container.
3Reliability
If fluid removal is done in portions with manual venting, then pressure can be equalized, but the productivity and efficiency of fluid extraction is reduced
Solution Approach 1:
The ventilation element enables continuous fluid extraction by automatically equalizing pressure during the process. As fluid is removed and negative pressure develops, the ventilation element opens to allow air entry, then closes when pressure equalizes, maintaining continuous extraction without interruption.
Solution Approach 2:
The ventilation element continuously monitors and manages pressure equalization automatically during fluid extraction, eliminating the need for periodic manual venting operations and enabling uninterrupted, efficient fluid removal.
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 continuous fluid removal without manual venting, maintaining a sealed position until pressure equalization occurs, ensuring safe and efficient fluid extraction.
Implementation Method 1
a pressure difference develops between the interior of the container and the surrounding environment
Implementation Method 2
the lid and/or the container are deformable by the pressure difference between the interior of the container and the environment
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention relates to a set (1), comprising - at least one container (3) for storing at least one body fluid (2) and - at least one lid (4) for closing the container (3), - wherein the container (3) has at least one interior (5) for storing the body fluid (2), - wherein the set (1) can be transferred at least between a sealing position and a ventilation position, - wherein the lid (4) and the container (3) together form an airtight sealing seat in the sealing position of the set (1), - wherein the lid (4) has a removal unit (6), by means of which the body fluid (2) can be removed from the container (3) even when the set (1) is in the sealing position. In order to produce a set (1) that enables the body fluid to be easily removed from the container (3) when the set (1) is in the sealing position, the invention provides that, when a negative pressure exists inside the interior (5) of the container (3) as a result of the removal of the body fluid (2) from the container (3) by the removal unit (6), the lid (4) and/or the container (3) can be deformed due to the pressure difference between the interior (5) of the container (3) and the surroundings (7) such that the set (1) can be transferred from the sealing position into the ventilation position, wherein, in the ventilation position of the set (1), air from the surroundings (7) flows into the interior (5) of the container (3) and ventilates the interior (5) of the container (3). The invention also relates to a method for producing a pressure equalisation between an interior (5) of a container (3).