Anti-Static Mesh Filter for Heat Exchanger Fin Contamination Reduction
Solution Overview
Problem
Heat exchangers in air conditioning units and similar devices suffer from significant debris accumulation, which reduces efficiency and shortens lifespan, and existing filters interfere with airflow, making regular cleaning laborious and inefficient.
Innovation Solution
A flexible anti-static mesh filter screen with a perimeter extending beyond the opening and mounting strips is used to protect heat transfer surfaces from debris, preventing airborne particulates from reaching the heat exchanger without obstructing airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filter elements are used to protect heat exchanging components, then debris accumulation is reduced, but airflow is interfered with
Solution Approach 1:
The patent employs a flexible filter screen made of thin mesh material that can be conformally attached to the heat exchanger surface. This thin film structure allows airflow to pass through while blocking debris, resolving the contradiction between protection and airflow by using a minimally invasive flexible barrier rather than rigid blocking elements
Solution Approach 2:
The filter screen utilizes a porous mesh structure with openings small enough to trap debris but large enough to permit air passage. This porous material enables simultaneous achievement of debris filtration and maintained airflow, directly addressing the technical contradiction between protection and productivity
2Productivity
If regular cleaning is performed to remove accumulated debris, then heat exchanger efficiency is maintained, but labor and time are significantly consumed
Solution Approach 1:
The filter screen is installed in advance to prevent debris accumulation before it occurs. By taking preliminary protective action, the need for frequent cleaning is eliminated, maintaining heat exchanger efficiency without consuming labor or time on regular maintenance
Solution Approach 2:
The filter screen performs self-service by automatically trapping debris as air passes through, without requiring human intervention for cleaning operations. The filter itself serves the protective function continuously, freeing the heat exchanger from needing regular manual cleaning
3Object-affected harmful factors
If metal or wire protective screens are used, then heat exchanger is protected, but the screens themselves clog with debris over time
Solution Approach 1:
The flexible mesh filter screen can conform to the heat exchanger surface and is less prone to clogging compared to rigid metal screens. Its flexibility allows it to maintain contact and effectiveness over time without the same clogging issues that plague rigid protective screens
Solution Approach 2:
The filter screen appears to be made of a composite or hybrid material structure combining mesh integrity with debris-repellent properties. This composite construction provides both protection and resistance to clogging, maintaining screen performance over extended periods
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 flexible filter effectively reduces debris accumulation on heat exchanger fins, maintaining efficiency and extending their lifespan by preventing airborne contamination without impeding airflow, thus simplifying maintenance and reducing operational costs.
Implementation Method 1
a sheet of an anti-static mesh flexible filter screen
Data Source
AI summary
A flexible filter for an opening leading to a heat transfer surface of a heat exchanger includes a sheet of an anti-static mesh flexible filter screen configured with a perimeter extending beyond edges of the opening; and at least one mounting strip attached to at least a portion of a perimeter of the sheet of filter screen. A method protecting a heat transfer surface of a heat exchanger from contamination by preventing airborne particulates from passing through an opening leading to the heat transfer surface with the flexible filter is also provided.