Gravity Transfer Member with Air Pressure Equalization
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Solution Overview
Problem
Existing transfer members for degreasing devices experience flow discontinuity or cessation due to air pressure differences when the source container empties, requiring manual squeezing to maintain liquid flow, and are vulnerable to fraudulent filling.
Innovation Solution
A transfer member with a connecting portion outside the containers and communication means that allow ambient air introduction into the source container, maintaining sufficient air pressure for continuous gravity-driven liquid flow and preventing fraudulent filling by equalizing upper air pressure with atmosphere.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the passage section of the transfer member is small, then the liquid flow is controlled, but the flow becomes discontinuous or stops when the container empties due to air pressure depression
Solution Approach 1:
The transfer member is segmented into multiple functional zones: a first end portion with transverse openings for liquid admission, a connecting portion with communication means for air intake, and a second end portion for liquid evacuation. This segmentation allows independent optimization of liquid flow control and air pressure equalization, resolving the contradiction between controlled flow and continuous operation.
Solution Approach 2:
The communication means arranged on the connecting portion acts as an intermediary that introduces ambient air into the container. This intermediary mechanism equalizes air pressure during emptying, preventing the pressure depression that would otherwise cause flow discontinuity, while the small passage section continues to control liquid flow rate.
2Productivity
If the container is squeezed to maintain flow, then liquid transfer continues, but manual intervention is required and operation becomes cumbersome
Solution Approach 1:
The transfer member enables self-service operation by automatically equalizing air pressure through the communication means during the emptying process. The system self-regulates to maintain continuous liquid flow without requiring external manual intervention such as squeezing, thereby improving ease of operation while ensuring complete liquid transfer.
Solution Approach 2:
The communication means ensures continuous useful action by maintaining air pressure equilibrium throughout the emptying process. This allows liquid flow to continue uninterrupted from full to empty container states, eliminating the need for periodic manual intervention and ensuring complete transfer without operation pauses.
3Ease of manufacture
If the container is opened for filling, then liquid can be introduced, but fraudulent filling can occur and security is compromised
Solution Approach 1:
The communication means extracts the air intake function from the liquid filling path. By providing a separate dedicated air introduction route through the connecting portion, the system allows legitimate filling through controlled openings while the communication means maintains pressure equilibrium. Any attempt at fraudulent filling through unauthorized openings would be detectable due to pressure imbalance, providing security without compromising legitimate filling operations.
4Ease of operation
If the transfer member has openings for liquid admission, then liquid can enter the cavity, but the structure becomes more complex and vulnerable to tampering
Solution Approach 1:
The transfer member merges multiple functions into integrated structural elements. The first end portion combines liquid admission openings with the overall tubular structure, while the connecting portion integrates communication means into its design. This merging approach provides liquid admission capability without adding separate complex components, maintaining structural simplicity and reducing tampering vulnerability while ensuring proper liquid entry into the cavity.
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
Ensures uninterrupted liquid transfer by gravity without manual intervention and prevents fraudulent filling by maintaining air pressure below atmospheric, ensuring complete transfer and secure container sealing.
Implementation Method 1
suitable for transferring a liquid from a first container to a second container by gravity
Implementation Method 2
As the container empties, a volume of air forms in the upper part of the container. This volume of air, under depression relative to the ambient air, leads to a decrease and a discontinuity in the flow
Data Source
Figure 1
Figure 2
AI summary
The element (1) has an elongated tubular body (2) delimiting a cavity and comprising end portions (6, 8) placed inside containers to allow introduction of liquid inside the cavity. A connection portion (10) connects the end portions, and is placed outside the containers. A communication unit is partially arranged on one of the end portions and on the connection portion so as to allow interior communication of one of the containers with outside during use condition. The communication unit includes a groove (22) emerging toward outside and partly extending on the connection and end portions.