Round Filter Element Volume Compensation for Urea-Adaptability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filter elements for urea-water solutions fail to compensate for volume changes due to temperature fluctuations, which can lead to mechanical stress and potential damage from expansion or contraction.
Innovation Solution
A round filter element design featuring a central opening with a central insertion section for a flexible volume compensation device and an outer flow-through section, allowing for the insertion of a hose-shaped separation section that compensates for volume changes by expanding or contracting based on fluid flow direction, while being securely fastened to a housing cover with a releasable fastening device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid filter element structure is used, then manufacturing precision and structural stability are improved, but the ability to compensate for volume changes due to temperature fluctuations deteriorates
Solution Approach 1:
The patent applies a flexible bellows structure at the end of the filter element, which acts as a flexible shell that can expand and contract to compensate for volume changes of the urea-water solution due to temperature fluctuations, while maintaining the rigid filtration structure for manufacturing precision
Solution Approach 2:
The bellows structure introduces dynamic adaptability to the otherwise static rigid filter element, allowing the volume of the filtration chamber to change dynamically with temperature while maintaining structural integrity and filtration performance
2Adaptability or versatility
If a flexible volume compensation device is added, then adaptability to temperature changes is improved, but device complexity increases
Solution Approach 1:
The volume compensation function is merged with the existing filter element structure by integrating the bellows directly into the end cap assembly, eliminating the need for separate compensation devices and reducing overall system complexity
Solution Approach 2:
The bellows structure serves multiple functions: it compensates for volume changes, maintains sealing, and provides structural support, thereby achieving volume compensation capability without adding dedicated complex compensation 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
Effectively compensates for volume changes in urea-water solutions due to temperature variations, preventing mechanical stress and ensuring the filter element's integrity by allowing for expansion and contraction without compromising the filtration process.
Implementation Method 1
a volume change of the urea-water solution in particular due to temperature changes can be compensated
Data Source
AI summary
A round filter element of a filter for a urea-water solution has a filter bellows with a filter medium that continuously extends circumferentially, relative to a filter element axis, around an element interior. An end body is fastened to an end face of the filter bellows and provided with a connecting section for fastening the round filter element to a housing cover of a filter housing of the filter. The end body has a central opening communicating with the element interior. The central opening has a central insertion section for receiving a flexible separation section of a volume compensation device of the filter and has an outer flow-through section enabling flow of the urea-water solution out of the filtration volume or into the filtration volume. The filter has a volume compensation device with a flexible separation section that separates a compensation volume from the filtration volume of the filter.