Filter Device Air Purging Through-Hole Configuration
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Solution Overview
Problem
Existing filter devices discharge liquid containing air and unfiltered particles together, leading to potential mixing of unfiltered liquid with filtered liquid in storage tanks, which can result in contamination.
Innovation Solution
A filter device design with a casing and filter element inside a tank, featuring a specific through-hole configuration in the lid and upper plate to allow air purging while preventing unfiltered liquid from entering the tank, ensuring filtered liquid is discharged separately from the air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single discharge path is used for both air and liquid, then the structure is simple, but unfiltered liquid may mix with filtered liquid causing contamination
Solution Approach 1:
The discharge path is segmented into two separate channels: a first discharge path for air bubbles and a second discharge path for filtered liquid. This segmentation prevents mixing between unfiltered and filtered liquid while maintaining structural organization. The first discharge path communicates the separation chamber with the atmosphere, while the second discharge path directs filtered liquid to the storage tank.
Solution Approach 2:
The air discharge function is extracted from the liquid discharge path. By providing a dedicated first discharge path for air bubbles that opens to the atmosphere, the system separates the air venting function from the filtered liquid discharge function, eliminating the risk of unfiltered liquid contamination.
2Productivity
If liquid is discharged together with air bubbles, then air can be purged effectively, but unfiltered liquid containing dust may be discharged into the storage tank
Solution Approach 1:
The discharge system is segmented into two independent paths: one for air bubbles (first discharge path) and one for filtered liquid (second discharge path). This allows air purging to occur through the first path without discharging unfiltered liquid, while filtered liquid is discharged separately through the second path, maintaining both air purging efficiency and liquid purity.
Solution Approach 2:
The separation chamber acts as an intermediary space between the filtration element and the discharge paths. It allows air bubbles to rise and be discharged through the first discharge path while filtered liquid is directed through the second discharge path, mediating between the filtration process and the final discharge to ensure purity.
3Manufacturing precision
If the filter element is completely sealed, then filtration efficiency is high, but air inside the filter device cannot be purged
Solution Approach 1:
The sealing arrangement is segmented to provide different sealing levels for different discharge paths. The first discharge path for air bubbles is provided with a reduced sealing arrangement that allows air to escape, while the second discharge path for filtered liquid maintains proper sealing to prevent contamination. This segmentation enables both filtration efficiency and air purging capability.
Solution Approach 2:
Different local qualities of sealing are applied to different parts of the system: the first discharge path has a reduced sealing arrangement to allow air purging, while the second discharge path and filtration element maintain high sealing quality for filtration efficiency. This local differentiation resolves the contradiction between sealing and air purging.
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 the effective discharge of filtered liquid with air from the filter device while preventing unfiltered liquid from contaminating the stored filtered liquid, thereby maintaining the purity of the liquid in the tank.
Implementation Method 1
a filter element disposed inside the casing and including a filtration member that has a substantially hollow cylindrical shape
Data Source
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AI summary
When air inside a filter device is purged, filtered liquid can be discharged together with air to the outside of the filter device. A casing is provided inside a tank, a filter element is provided inside the casing, and a lid is provided so as to cover the upper face of the casing and the upper face of the tank. A first through-hole is formed in the substantially center of an upper plate that covers the upper end face of a filtration member of a filter element and is abutted with the lower face of the lid; in a plan view, a second through-hole, in which a first opening being one end is disposed at a position overlapped with the first through-hole, and a second opening being the other end is disposed between the side face of the tank and the side face of the casing, is formed in the lid; and the first through-hole and the second through-hole communicate with the hollow portion of the filtration member and space that is inside the tank and outside the casing.