Filter Device With Elastic Compensation Element For Freezing Liquids
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Solution Overview
Problem
Existing filter devices for liquids face challenges in managing the pressure exerted by ice formation within the filter element, as they lack effective mechanisms to compensate for the volume expansion caused by freezing liquids, leading to potential damage from ice pressure.
Innovation Solution
A filter device is designed with a compensation element made of elastically deformable material, such as EPDM rubber, arranged in an annular gap between the compensation element and the filter element, allowing for compression upon freezing to minimize volume expansion, and a support body that facilitates axial and radial flow, ensuring the liquid is in contact with the compensation element for effective compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter element is used for filtering liquids that may freeze, then filtration function is provided, but the filter element is damaged by ice pressure when the liquid freezes
Solution Approach 1:
A compensation element is arranged in the interior of the filter element to beforehand cushion and compensate for the volume expansion when liquid freezes into ice. The compensation element is compressible by the ice pressure, preventing damage to the filter element while maintaining the filtration function.
Solution Approach 2:
The compensation element changes its physical state from uncompressed to compressed state in response to the freezing process. By changing its compression parameter, it absorbs the volume expansion of freezing liquid and protects the filter element from ice pressure damage.
2Strength
If a compensation element is arranged in the interior to compensate volume expansion, then ice pressure damage is prevented, but the compensation element itself may be damaged without sufficient compensation volume
Solution Approach 1:
The compensation element is pre-positioned in the interior to provide beforehand cushioning for volume expansion. It is designed with sufficient compressibility to absorb the freezing liquid's expansion without exceeding its structural limits, ensuring both filter element protection and compensation element durability.
3Reliability
If the compensation element fills most of the interior volume, then volume expansion compensation is effective, but the liquid flow path is restricted
Solution Approach 1:
The compensation element is positioned to occupy specific regions of the interior where it can effectively compensate volume expansion, while leaving other regions open for liquid flow. This local differentiation of function ensures both effective compensation and maintained productivity.
Solution Approach 2:
The interior space is segmented into compensation zones occupied by the compensation element and flow zones kept open for liquid passage. This spatial segmentation allows the compensation element to fill sufficient volume for effective compensation while maintaining adequate flow paths for liquid productivity.
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 compensates for the volume expansion caused by freezing liquids, reducing the risk of ice pressure damage and maintaining filtration efficiency by ensuring the compensation element fills a significant portion of the interior volume, allowing for complete elastic compression of the liquid volume.
Implementation Method 1
at least one compensation element of elastically deformable material for receiving a liquid volume increasing upon freezing of the liquid
Implementation Method 2
a liquid volume increasing upon freezing of the liquid
Data Source
AI summary
The invention relates to a filter device (1) for filtering liquids, comprising: a filter element (2) having an interior (3) for accommodating a liquid, and a compensating element (5) made of elastically deformable material for accommodating a liquid volume that increases when the liquid freezes. The compensating element (5) is arranged in the interior (3), and a gap (6), in particular an annular gap, for accommodating the liquid is formed between the compensating element (5) and the filter element (3).