Integrated Filter Element for Pressure Pulsation Dampening
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Solution Overview
Problem
Existing canister style filter systems face efficiency reduction due to pressure pulses, requiring external mechanisms that increase costs and maintenance needs.
Innovation Solution
A replaceable filter element with an integrated pulsation dampening device featuring a flexible valve and baffles that mitigate pressure pulses by creating a serpentine flow passage, reducing pulsation impact on the filter media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external pulsation reducing mechanism is added to protect the filter, then pressure pulse protection is improved, but device complexity and cost increase
Solution Approach 1:
The pulsation dampening device is merged with the filter element by integrating the flexible valve and serpentine flow passage directly into the filter structure. The flexible valve is positioned within the filter element's central passage, and the serpentine flow passage is formed by baffles integrated into the filter housing, combining pulse protection and filtration functions in a single component.
Solution Approach 2:
The filter element serves dual functions: filtration and pulsation dampening. The flexible valve automatically responds to pressure pulses by opening or closing to regulate flow, and the serpentine flow passage passively dampens pulses through its winding geometry, eliminating the need for external active control mechanisms.
2Reliability
If an external pulsation reducing mechanism is added, then pressure pulse protection is improved, but maintenance requirements increase
Solution Approach 1:
The pulsation dampening device is merged with the filter element by integrating the flexible valve and serpentine flow passage directly into the filter structure. The flexible valve is positioned within the filter element's central passage, and the serpentine flow passage is formed by baffles integrated into the filter housing, combining pulse protection and filtration functions in a single component.
Solution Approach 2:
The filter element serves dual functions: filtration and pulsation dampening. The flexible valve automatically responds to pressure pulses by opening or closing to regulate flow, and the serpentine flow passage passively dampens pulses through its winding geometry, eliminating the need for external active control mechanisms.
3Device complexity
If pressure pulses are allowed to reach the filter media, then system simplicity is maintained, but filter efficiency deteriorates
Solution Approach 1:
The serpentine flow passage converts the harmful pressure pulses into a beneficial damping effect. The winding path creates multiple flow direction changes and increases flow path length, which dissipates pulse energy and smooths pressure fluctuations before they reach the filter media, turning the high-speed pulsing flow into a more stable flow pattern.
Solution Approach 2:
The serpentine flow passage uses curved and winding geometry instead of straight paths. The multiple bends and turns in the flow passage create gradual flow direction changes that dampen pressure pulses through centrifugal effects and flow separation, reducing the direct impact of pressure spikes on the filter media.
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
The solution effectively reduces pressure pulsation impact on the filter media, enhancing filter performance and reducing maintenance and cost by integrating pulsation dampening within the filter element.
Implementation Method 1
A filter pulsation dampening device may also be provided that includes a flexible valve that defines a valve free end that is disposed in the central reservoir of the center tube
Implementation Method 2
A first baffle may extend from the shaft portion, the first baffle extending axially away from the head and radially away from the shaft portion
Data Source
AI summary
A filter pulsation dampening device has a replaceable filter element including a plurality of baffles disposed next to each other or a flexible valve that is disposed proximate a baffle.