Working Machine Thermal Management via Partition Plate
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Solution Overview
Problem
In hybrid excavators, the existing cooling methods for heat-sensitive electric devices are inefficient due to the mixing of devices on the same plane, leading to reduced performance and lifespan, especially in limited spaces where heat from other devices is not effectively managed.
Innovation Solution
A stand with a top plate for installing heat-sensitive devices is designed, where the devices are positioned away from other heat-generating hydraulic devices, using heat insulating members and heat shield plates to protect against thermal influences, and ventilation ports for efficient air cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electric devices and hydraulic devices are arranged on the same plane in limited space, then device concentration is achieved, but cooling effect deteriorates and thermal influence increases
Solution Approach 1:
The patent transitions from two-dimensional planar arrangement to three-dimensional spatial arrangement by positioning electric devices on the upper surface and hydraulic devices on the lower surface of a partition plate, effectively utilizing the vertical dimension to separate heat sources from heat-sensitive components while maintaining compact overall footprint
Solution Approach 2:
The patent divides the device mounting space into distinct segments using a partition plate, creating separate zones for electric devices and hydraulic devices. This segmentation prevents thermal interference by isolating heat-generating hydraulic components from heat-sensitive electric components
2Area of stationary object
If electric devices are positioned close to hydraulic devices for compact arrangement, then space utilization improves, but thermal protection deteriorates
Solution Approach 1:
The partition plate creates vertical separation between electric devices positioned above and hydraulic devices positioned below, utilizing the third dimension (height) to achieve thermal isolation while maintaining horizontal compactness
Solution Approach 2:
The partition plate acts as an intermediary thermal barrier between hydraulic devices and electric devices, blocking heat transmission from the hydraulic side to the electric side while allowing both device types to coexist in close proximity
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 ensures effective cooling and protection of heat-sensitive devices, maintaining their performance and lifespan while allowing for compact and efficient arrangement of multiple devices, reducing thermal interference and enhancing maintenance accessibility.
Implementation Method 1
a heat insulating member for protecting the electric device installed on the top plate against heat from the hydraulic device accommodated in the space is provided
Implementation Method 2
ventilation ports for efficient air cooling
Data Source
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AI summary
A plurality of supports (24) and a top plate (25) attached to between upper ends of the supports (24) are provided, and a power storage device (17) and a controller (18) are installed on the both upper and lower sides of the top plate (25) respectively. Meanwhile, a hydraulic pump (15) and a control valve (16) are accommodated in space for hydraulic devices (S) on the lower side of the top plate (25), and a heat insulating member (32,33) and heat shield plates (34-37) are provided as heat shield means for protecting the power storage device (17) and the controller (18) against heat from the exterior including heat of the hydraulic pump (15) and the control valve (16).