Filter Element Bypass Valve Axial Coupling Design
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Solution Overview
Problem
Filter systems generate excessive waste and have complex designs due to the automatic replacement of bypass valve assemblies with filter elements, leading to increased costs and inefficiencies when filter elements become clogged.
Innovation Solution
A filter assembly design where the bypass valve member is moveably coupled to the core element, allowing it to remain attached during filter element replacement, thus avoiding automatic replacement and simplifying the design, reducing waste, and minimizing turbulence and pressure drop in fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bypass valve member is integrated with the filter element as a separate structural unit, then the filter element can be easily replaced, but the bypass valve member is automatically replaced causing waste and increased costs
Solution Approach 1:
The bypass valve member is segmented from the filter element and integrated into the core element instead. This allows the filter element to be replaced independently without replacing the bypass valve member, reducing waste while maintaining ease of filter replacement operation.
Solution Approach 2:
The bypass valve member is merged with the core element to form a single structural unit. This combining allows the bypass valve to remain in the system while the filter element is replaced, eliminating the waste associated with replacing the bypass valve with every filter element change.
2Device complexity
If the bypass valve member is integrated with the filter element, then the design is simplified, but the device complexity increases due to automatic replacement of functional components
Solution Approach 1:
The system is segmented into distinct functional units: the filter element, the core element with bypass valve, and the housing. This segmentation simplifies manufacturing by allowing each component to be produced independently and assembled, reducing overall manufacturing complexity despite the integrated design.
3Loss of substance
If the bypass valve member is moveably coupled to the core element, then waste is reduced, but the device complexity increases due to movable coupling mechanism
Solution Approach 1:
The bypass valve member is designed with movable coupling to the core element, allowing it to move axially between extended and retracted positions. This dynamic capability enables the valve to remain attached during filter element replacement while still allowing for operational movement, reducing waste without requiring complex fixed mounting mechanisms.
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
This design reduces waste and complexity, lowers pressure drop, and decreases the power required for fluid pumps by allowing the bypass valve to remain attached to the core element, enhancing the filter system's efficiency and environmental sustainability.
Implementation Method 1
The bypass valve member is tubular and moveably coupled to the perforated tube for movement in axial direction with respect to the perforated tube between an extended position and a retracted position
Implementation Method 2
a tubular wall of filtration medium for collecting material entrained in a fluid stream passing through the tubular wall
Implementation Method 3
The core element provides mechanical support to the filtration medium, which normally has a limited structural strength. Hence, a core element provides support to prevent the filtration medium from deforming under the pressure difference that exists across it.
Data Source
AI summary
A combination (10) of a replaceable filter element (21) and a core element (38) is provided, the filter element comprising a tubular wall (25) of filtration medium for collecting material in a fluid stream passing through the tubular wall (25), a first end part (26) and a second end part. The core element (38) comprises a perforated tube (39) having transverse outer dimensions smaller than transverse inner dimensions of the tubular wall (25), and a bypass valve member (35) provided at one end of the perforated tube (39). The bypass valve member (35) is tubular and moveably attached to the perforated tube (39) for movement in axial direction with respect to the perforated tube (39) between an extended position and a retracted position. The first end part (26) of the filter element (21) comprises an axial passage (29) configured to receive the bypass valve member (35) slideable and sealingly.