Integrated Heat Exchanger Working Fluid Filter
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Solution Overview
Problem
Existing exhaust gas recirculation systems for internal combustion engines, particularly diesel engines, face issues with particle loading in the working fluid, which leads to compressor wear and increased maintenance needs, and existing filter solutions require additional space and incur high pressure losses.
Innovation Solution
Integrating a working fluid filter within the heat exchanger block and connection line, allowing for a compact design with reduced space requirements and low pressure loss, and enabling easy filter exchange or removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate working fluid filter is arranged downstream of the heat exchanger, then particle reduction is achieved, but additional space is required and pressure loss increases
Solution Approach 1:
The patent combines the working fluid filter with the heat exchanger by integrating the filter housing into the heat exchanger structure. The filter is positioned within the heat exchanger's flow path, allowing particle filtration to occur within the same component that performs heat exchange, thereby eliminating the need for a separate filter assembly and reducing overall space requirements.
Solution Approach 2:
The filter is nested within the heat exchanger structure, where the filter housing is incorporated into the heat exchanger's existing housing. This nesting arrangement allows the filter to occupy space that would otherwise be unused or minimally utilized in the heat exchanger design, achieving space-efficient integration without compromising filtration performance.
2Reliability
If a separate working fluid filter is arranged downstream of the heat exchanger, then particle reduction is achieved, but pressure loss increases
Solution Approach 1:
By merging the filter with the heat exchanger, the working fluid passes through the filter during its normal flow path through the heat exchanger. This integration allows the filter to be positioned where the fluid velocity and pressure are already optimized for heat exchange, minimizing additional pressure loss compared to a separate filter arrangement that would create an additional flow restriction point.
3Area of stationary object
If a working fluid filter is integrated in the heat exchanger, then space requirements are reduced, but filter handling and exchange may become more difficult
Solution Approach 1:
The filter is designed as a separable component that can be independently removed from the heat exchanger. The filter housing includes connection elements that allow it to be detached from the heat exchanger body, enabling the filter to be exchanged without removing or disassembling the entire heat exchanger assembly. This segmentation maintains space efficiency while improving serviceability.
Solution Approach 2:
The filter integration design allows for dynamic configuration where the filter can be easily installed and removed. The connection between the filter and heat exchanger is designed to be simple and reversible, enabling maintenance personnel to access and replace the filter without complex disassembly procedures, thus balancing compact integration with ease of maintenance.
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 integration reduces the space needed for filtration, minimizes pressure loss, and simplifies filter handling and maintenance, providing a more efficient and space-saving solution for particle reduction in exhaust gas recirculation systems.
Implementation Method 1
a heat exchanger block (11) for implementing the heat exchange;
Implementation Method 2
a working fluid filter (1) which is integrated in the heat exchanger (10)
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
The exchanger (10) has a heat exchanger block (11) for implementation of heat exchange, and connection lines (14.1, 14.2) for supplying a working fluid (AF) to the exchanger. A working fluid-filter is brought between the heat exchanger block and the connection lines, for integration of the working fluid-filter in the exchanger. The connection lines are connected to the heat exchanger block and are connected with a connection flange (18). The working fluid-filter includes a filter area formed in flat-shape. An independent claim is also included for an exhaust gas recirculation system including a particle filter.