Cabin Air Filter Layout Using Rear Pillars to Cut Roof Overhang
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Solution Overview
Problem
Conventional working vehicles with roofs that include outside air filters and introduction ports on the sides experience significant overhang, which can lead to contact with obstacles in narrow spaces.
Innovation Solution
The implementation of dual filter devices, each with its own intake port and blower, positioned close to their respective pillars to reduce pressure loss and overhang, with one filter having higher removal performance and accommodated within the roof, while the other is housed in a pillar, allowing for parallel arrangement and reduced roof thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If outside air filters and introduction ports are provided on the left and right outer sides of the roof, then air purification function is improved, but roof overhang increases causing contact with obstacles
Solution Approach 1:
The filter devices are relocated from the horizontal outer sides of the roof to vertical positions on the pillars supporting the roof. This dimensional change moves the filters from lateral extension (increasing overhang) to vertical arrangement (maintaining compact horizontal footprint), thereby reducing roof overhang while preserving air purification functionality
Solution Approach 2:
The pillars serving as structural support elements act as intermediaries to house the filter devices. By placing filters on the pillars rather than directly on the roof, the design achieves space-efficient arrangement that reduces overhang while maintaining the air purification function through the intermediary structural elements
2Productivity
If filter devices are positioned远离 from intake ports, then air intake efficiency is improved, but pressure loss increases
Solution Approach 1:
The design optimizes the spatial parameters by positioning filter devices at specific distances from intake ports on the pillars. This parameter adjustment balances air intake efficiency with pressure loss minimization, achieving optimal performance by carefully controlling the distance parameter between filter elements and air intake openings
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 minimizes roof overhang, reducing the risk of contact with obstacles and optimizing air intake efficiency by minimizing pressure loss and accommodating larger equipment within the roof's internal space.
Implementation Method 1
a first filter device (161) configured to remove an object to be removed included in introduced outside air
Implementation Method 2
a second filter device (111) configured to remove an object to be removed contained in the introduced outside air
Data Source
AI summary
A working device includes a first filter device to remove an object to be removed contained in introduced outside air, a second filter device to remove an object to be removed contained in the introduced outside air, the second filter device being different from the first filter device, a right rear pillar configured to support one side in a left-right direction of a roof of a cabin and including an opening to take in the outside air introduced into the first filter device, and a left rear pillar configured to support the other side in the left-right direction of the roof and including an opening to take in the outside air introduced into the second filter device.