Reducing Agent Tank Heat Exchanger for Uniform Heating
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Solution Overview
Problem
Existing reducing agent tanks face challenges in achieving efficient heat transfer to the reducing agent, leading to potential freezing and uneven heating, which can disrupt the operation of exhaust gas treatment systems in work vehicles.
Innovation Solution
The design incorporates a heat exchanger with a penetrating portion and two inclined portions that extend into the tank, increasing the path length and surface area for heat transfer, ensuring even heating across the height of the tank and preventing freezing by optimizing the arrangement of the heat exchanger and suction pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a heat exchanger with a long path length is used to increase surface area for heat transfer, then heat transfer efficiency is improved, but the heat distribution becomes uneven in the height direction
Solution Approach 1:
The heat exchanger is divided into multiple inclined portions (first inclined portion and second inclined portion) positioned at different locations in the extending direction of the penetrating portion. This segmentation allows heat to be radiated from multiple positions, improving both heat transfer efficiency and distribution uniformity.
Solution Approach 2:
The heat exchanger transitions from a simple horizontal arrangement to a three-dimensional configuration with inclined portions extending in the height direction. This dimensional change enables heat transfer to occur at multiple vertical positions, resolving the contradiction between efficiency and uniformity.
2Productivity
If the heat exchanger path length is increased to improve heat transfer, then more heat exchange surface area is available, but the complexity of the heat exchanger structure increases
Solution Approach 1:
The heat exchanger employs inclined portions that curve or slope gradually rather than sharp angles, allowing the path length to be extended in a space-efficient manner. This curved configuration increases heat transfer surface area while maintaining relatively simple fabrication and installation.
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 configuration enhances heat transfer efficiency to the reducing agent, reduces uneven heating, and effectively prevents freezing, ensuring reliable operation of the exhaust gas treatment systems in work vehicles.
Implementation Method 1
a heat exchanger that performs heat exchange with the reducing agent
Implementation Method 2
heat transfer efficiency to the reducing agent
Implementation Method 3
heat exchange medium into the container main body
Data Source
AI summary
A reducing agent tank is provided which can improve a heat transfer efficiency to a reducing agent and transfer heat to the reducing agent in a height direction of the reducing agent tank without unevenness. The reducing agent tank includes a container main body which has an upper face and a bottom face and constitutes a space for storing the reducing agent between the upper face and the bottom face, and a heat exchanger which performs heat exchange with the reducing agent. The heat exchanger has penetrating portions and inclined portions. The penetrating portions penetrate to the upper face of the container main body and extend into the space. The inclined portions are inclined relative to the penetrating portions at a position different from each other in an extending direction of the penetrating portions and extend toward a side of the bottom face.