Construction Equipment Cooling Layout With Side Reservoir Tank
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Solution Overview
Problem
The use of a pressure-sealed reservoir tank in construction equipment cooling systems requires it to be positioned higher than the top of the radiator, leading to a protrusion that increases the ceiling height of the cooling device housing, obstructing the rearward field of vision from the operation room.
Innovation Solution
The cooling system arrangement features a pressure-sealed reservoir tank positioned laterally to an upper tier inter-cooler, which is shorter in horizontal width than the lower tier radiator and oil cooler, allowing the reservoir tank to be integrated without protruding upward, thus maintaining a lower ceiling height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure-sealed reservoir tank is positioned higher than the top of the radiator to enable air removal, then air bubble separation performance is improved, but the ceiling height of the cooling device housing increases and rearward field of vision is obstructed
Solution Approach 1:
The reservoir tank is repositioned from a vertical arrangement (above the radiator) to a lateral arrangement (beside the upper tier heat exchanger). This dimensional change allows the tank to achieve the required height for air removal while extending in the horizontal direction instead, thus avoiding increase in ceiling height and maintaining unobstructed rearward vision from the operation room.
2Temperature
If multiple heat exchangers are arranged side-by-side in parallel, then cooling efficiency is improved and maintenance is facilitated, but the horizontal space required increases
Solution Approach 1:
The cooling system transitions from a purely horizontal side-by-side arrangement to a multi-level vertical arrangement. The upper tier heat exchanger is positioned above the lower tier radiator, allowing heat exchangers to be stacked vertically. This utilizes the vertical dimension to accommodate multiple heat exchangers, reducing the horizontal footprint while maintaining effective cooling surface area and cooling efficiency.
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 arrangement enables the pressure-sealed reservoir tank to be positioned higher than the radiator without increasing the ceiling height, improving cooling efficiency and maintaining unobstructed rearward vision from the operation room.
Implementation Method 1
a cooling fan that supplies cooling air flow to these heat exchangers
Implementation Method 2
a radiator to cool engine cooling water, an oil cooler to cool hydraulic oil
Data Source
AI summary
In the cooling system of construction equipment equipped with a plurality of heat exchangers including radiators, in providing a pressure-sealed reservoir tank connected in parallel with radiators in the cooling water circulation system between the radiators and engine, said reservoir tank is arranged so as not to protrude above the upper tier heat exchanger, the radiator and oil cooler are arranged lower than the upper tier heat exchanger in a lower tier heat exchangers, and the horizontal width of inter-cooler is made shorter than the horizontal width of radiator and oil cooler forming the tank space laterally to the inter-cooler where the pressure-sealed reservoir tank is arranged on said tank space.