Exhaust Check Valve Segmented Guide for Cleanability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing non-return valves for exhaust pipes, particularly in combustion devices like gas burners, face issues with contamination, difficulty in cleaning, and restricted flow cross-sections due to design limitations, which impair their functionality and cleanability.
Innovation Solution
The non-return valve design separates the sealing and guiding functions into distinct components, allowing for easy disassembly and cleaning, with a bayonet lock mechanism for secure attachment, a siphon condensate collecting channel to prevent gas penetration, and a guide surface formed from a narrowed tubular section to maximize flow cross-section and prevent tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the float is guided on guide webs arranged radially inwards, then the float is properly guided, but the free flow cross section is narrowed
Solution Approach 1:
The non-return valve is divided into separate components: the valve body, the float, and the guide section. The guide section is integrated with the float rather than being a separate guided element, allowing the float to move freely while maintaining proper guidance during operation.
2Reliability
If the guide section is closely surrounded by guide webs, then the float is precisely guided, but contamination risk increases and cleanability deteriorates
Solution Approach 1:
The guide function is extracted from a separate guide structure and integrated directly into the float's guide section. This eliminates the narrow gaps between guide webs and the float, creating an open design that is much easier to clean and less prone to contamination.
3Device complexity
If the non-return valve is directly part of the exhaust pipe, then the structure is simplified, but the valve becomes difficult to clean and maintain
Solution Approach 1:
The non-return valve is designed as a separable component that can be independently removed from the exhaust pipe system. The valve body, float, and guide section form a removable assembly that maintains structural simplicity while enabling easy access for cleaning and maintenance operations.
4Device complexity
If the float is guided downstream of the valve seat, then the structure is simplified, but the float may tilt during operation
Solution Approach 1:
The guide section of the float is designed with an asymmetric shape that provides stable guidance downstream of the valve seat. The guide section has a contour that matches the valve body's guide surface, creating a stable configuration that prevents tilting while maintaining structural simplicity.
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 enhances cleanability, maintains a maximized flow cross-section, prevents tilting, and ensures reliable operation by allowing manual disassembly and cleaning of the valve components, while the siphon condensate channel prevents gas penetration and flooding.
Implementation Method 1
a siphon condensate collecting channel to prevent gas penetration
Data Source
Figure 1~5
Figure 6~7
AI summary
The valve (1) has a valve seat (11) attached with a float element (2) that is provided with a guide section, where the guide section is axially adjustable on a guide surface. The valve seat is arranged at a mounting element (3) that is provided with a fixing unit (4) for releasably connected to the guide surface for guiding the guide section of the float element. The mounting element is releasably fixed at a holding element (5). A collecting gutter is provided at the holding element. An axial stopper is formed at the mounting element for limiting axial stroke movement of the float element.