Round Filter Element with Support Grid for Gas Filtration
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Solution Overview
Problem
Existing round filter elements for gas filtration face challenges in maintaining high filtration performance over a long period, particularly under non-symmetrical or non-parallel flow conditions, due to structural limitations that lead to deformation and reduced efficiency.
Innovation Solution
A round filter element design featuring a filter medium body with a support grid on its outer wall, a flow-guiding rib on the housing cover, and a sealing element to ensure uniform particle loading and prevent deformation, allowing for radial fluid flow and efficient filtration while maintaining geometric shape and flow conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a round filter element is used for gas filtration, then filtration function is provided, but under non-symmetrical or non-parallel flow conditions the filter medium body deforms and filtration performance decreases over time
Solution Approach 1:
A support grid is arranged on the outer wall of the filter medium body to provide mechanical support and prevent deformation. The support grid acts as a reinforcing structure that maintains the geometric shape of the filter medium body while allowing it to flexibly adapt to flow conditions without permanent deformation.
Solution Approach 2:
A flow-guiding rib is arranged on the housing cover to guide the fluid flow uniformly onto the filter medium body. The flow-guiding rib acts as an intermediary element that transforms non-uniform flow conditions into uniform flow distribution, preventing localized stress concentrations that would cause deformation.
2Productivity
If the filter medium body is exposed to non-uniform flow conditions, then filtration continues, but particle loading becomes non-uniform and efficiency reduces
Solution Approach 1:
The flow-guiding rib on the housing cover serves as an intermediary structure that redistributes the incoming fluid flow. It guides the flow to enter the internal flow space and distribute it uniformly across the filter medium body's surface, ensuring even particle loading and maintaining high filtration efficiency throughout the filter's operational life.
Solution Approach 2:
The flow-guiding rib creates locally optimized flow conditions by directing fluid along specific paths. This ensures that different regions of the filter medium body receive appropriate flow distribution, with areas that would otherwise be under-loaded or over-loaded receiving balanced flow to achieve uniform particle loading.
3Duration of action of stationary object
If the filter element operates for a long period, then extended service time is achieved, but stress accumulation causes deformation and performance degradation
Solution Approach 1:
The support grid provides continuous structural reinforcement to the filter medium body throughout operation. This prevents stress accumulation and deformation even during long-period operation, maintaining the filter element's structural integrity and filtration performance over extended service periods.
Solution Approach 2:
The support grid is pre-installed on the outer wall of the filter medium body to provide preventive structural support. This cushioning structure prevents deformation before it can occur, protecting the filter medium body from stress-induced damage during prolonged operation under varying flow conditions.
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 design enhances filtration performance by maintaining the filter medium body's shape and reducing stress, ensuring consistent flow and extended operational efficiency, even under non-ideal flow conditions.
Implementation Method 1
a flow-guiding rib on an inside, which protrudes into the internal flow space of the round filter element... the flow guide rib... supports the introduction of the fluid flow into the internal flow space and the uniform particle loading of the filter element
Implementation Method 2
the filter medium body, through the wall of which the fluid to be cleaned can flow in a radial direction... flows through the wall of the filter medium body radially from the inside to the outside
Implementation Method 3
a support grid is arranged on the outer wall of the filter medium body... maintaining the filter medium body's shape and reducing stress
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A filter device, particularly for gas filtration, for example an air filter, is disclosed here, comprising a circular filter element and a filter housing (2) for receiving the circular filter element. The circular filter element includes a filter medium body (6) through whose wall the fluid to be cleaned can flow radially along the longitudinal axis (8) of the filter medium body (6). The filter medium body (6) also includes an end plate (9, 10) on each of its opposite end faces, the raw side of which is located in an internal flow chamber (7) within the filter medium body (6), and a support grid (13) is arranged on the outer wall of the filter medium body (6). The filter housing (2) has a housing cover (4) which has a flow guide rib (17) on its inner side that projects into the internal flow chamber (7) of the circular filter element.Furthermore, a round filter element with a filter medium body is disclosed, the wall of which can be flowed through by the fluid to be cleaned in a radial direction, wherein the raw side is located in the inner flow space in the filter medium body and has a support grid on the outer wall of the filter medium body.