Filter Thermal Expansion Compensator Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional filters used in sterilizing machines are prone to breakage due to thermal expansion cycles, require frequent maintenance, and malfunction during testing phases, limiting their reliability and safety.
Innovation Solution
A filter design incorporating a pleated fiberglass medium with thermal expansion compensators between the frame and filtering pack, allowing independent expansion and contraction, and using adhesive bonding for secure attachment, reducing the risk of breakage and improving durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filters are used in sterilizing machines, then the filter structure is simple and easy to manufacture, but the filter is prone to breakage due to thermal expansion cycles
Solution Approach 1:
The filter assembly is divided into separate components: a frame structure and a filtering pack that can expand and contract independently. The filtering pack is segmented from the frame through the use of expansion compensators, allowing each part to move independently during thermal cycles without causing breakage.
Solution Approach 2:
The invention explicitly addresses thermal expansion by incorporating expansion compensators between the frame and filtering pack. These compensators allow the filtering pack to expand and contract independently in response to temperature changes, preventing the breakage that occurs in conventional filters where rigid connections transmit thermal stress.
2Productivity
If the heating speed of the filter is increased, then the machine startup time is reduced, but the filter components are more likely to break due to thermal stress
Solution Approach 1:
The expansion compensators are installed beforehand to cushion and absorb the thermal expansion stresses that will occur during rapid heating. This pre-positioned protective mechanism allows faster heating rates without increasing the risk of thermal stress breakage.
Solution Approach 2:
The filter assembly transitions from a rigid, static structure to a dynamic system where the filtering pack can move independently relative to the frame. This dynamic capability allows the system to adapt to rapid temperature changes and thermal expansion without compromising structural integrity.
3Ease of repair
If conventional filters are used, then the filter design is straightforward, but maintenance interventions need to be quite frequent
Solution Approach 1:
The filtering pack is made separable from the frame through the expansion compensator design, allowing the filtering element to be removed and replaced independently without disturbing the frame structure. This segmentation enables easier maintenance and extends the service life of the overall filter assembly.
Solution Approach 2:
The design allows the filtering pack to be discarded or replaced independently when it becomes degraded from thermal cycling, while the frame and expansion compensators can be recovered and reused. This extends the overall maintenance interval compared to conventional filters where the entire assembly may need replacement.
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 filter design significantly reduces the risk of breakage and malfunction, enabling faster machine startup, fewer maintenance needs, and enhanced reliability and safety during thermal cycles and testing phases.
Implementation Method 1
the various different parts that go to make up this component are in fact characterized by different thermal expansion coefficients, with the consequence that the repeated thermal cycles can entail the breakage of the filter
Implementation Method 2
using adhesive bonding for secure attachment
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A filter (1), comprising: - a perimetric border frame (2), comprising a plurality of walls (21, 22, 23, 24) which delimit an accommodation region (25) for a filtering pack (3), - a filtering pack (3) accommodated in the accommodation region (25) of the perimetric frame (2); the filter (1) further comprises at least one thermal expansion compensator (4, 5) interposed between at least one of the walls (21, 22, 23, 24) of the frame (2) and the filtering pack (3).