Dustproof Net Installation Structure for Engine Cooling Systems

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Solution Overview

Problem

Conventional dustproof net installations in construction machines are limited by the mounting positions and dimensions of heat exchangers, making detachment and attachment difficult, restricting net size, and requiring multiple types of nets for different machines, leading to complexity in manufacture and maintenance.

Innovation Solution

A dustproof net installation structure that is independent of heat exchanger mounting positions and dimensions, using holding strips to securely attach and guide cooling air through the net, allowing for a standardized design that can be used across various machines, facilitating maintenance and reducing manufacturing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the dustproof net is fixedly secured on the sealed frame with the condenser held thereon, then the dustproof net can be arranged at a position upstream of the condenser, but the installation position is determined by the mounting positions of heat exchangers, making detachment and attachment work difficult

Engineering Contradiction:
Improvedetachment and attachment workVSAvoidinstallation position determination
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The dustproof net is divided into a net section and a frame section that can be detached from each other. The frame section is secured to the sealed frame, while the net section can be removed and replaced independently, facilitating maintenance work without requiring removal of the entire assembly

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The net section is extracted as a separate removable component from the frame section. This allows the net to be easily detached for cleaning or replacement while leaving the frame section mounted on the sealed frame, significantly improving maintenance accessibility

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If the dustproof net is fixedly secured on the sealed frame with the condenser held thereon, then the dustproof net can be arranged in isolation from the condenser, but the shape and dimensions are determined by the sealed frame, restricting enlargement

Engineering Contradiction:
Improveshape and dimensionsVSAvoidsealed frame constraints
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame section is designed with a standardized structure that can accommodate different net sections with varying shapes and dimensions. This universal frame design allows the dustproof net system to be adapted to different applications and scaled up or down without requiring custom frame designs

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The dustproof net system transitions from a fixed, rigid structure to a more dynamic configuration where the net section can be independently replaced and resized. This allows the system to adapt to different spatial requirements while maintaining the same mounting interface on the sealed frame

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If the dustproof net is fixedly secured on the sealed frame with the condenser held thereon, then the dustproof net can be arranged at a position upstream of the condenser, but manufacturing multiple types of dustproof nets for different machines becomes necessary

Engineering Contradiction:
Improvemanufacture of dustproof netsVSAvoidnumber of dustproof net types
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The frame section is designed as a universal mounting structure that can accommodate different net sections. This standardization allows a single frame design to be used across multiple machine types, reducing the number of unique components that need to be manufactured and stocked

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

By separating the frame section from the net section, the invention allows standardization of the frame component while permitting customization of the net section. This segmentation enables manufacturers to produce standardized frames in volume while only needing to manufacture different net sections when specific applications require them

Inventive Principle:
Principle #1Segmentation

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 solution simplifies the installation and maintenance of dustproof nets, enables larger and more versatile designs, and reduces the number of nets needed, improving dust removal efficiency and extending service life while lowering manufacturing costs.

Implementation Method 1

a dustproof net which serves to remove dust contained in air drawn in by the cooling fan upon passage of the air through the dustproof net

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentEP2295758B1Installation structure for dustproof net
Publication Date: 2015.01.07 HITACHI CONSTRUCTION MACHINERY CO LTD
  • EP2295758B1 patent drawingFigure 1~2
  • EP2295758B1 patent drawingFigure 3
  • EP2295758B1 patent drawingFigure 4

AI summary

Disclosed is an installation structure for a dustproof net to be arranged in a machine, which has an engine, a cooling fan for producing cooling air to cool the engine, plural heat exchangers arranged on an upstream side of the cooling fan, and a compartment with the engine, cooling fan and plural heat exchangers accommodated therein, such that the dustproof net is arranged at a position on a side upstream of the heat exchanger located most upstream among the plural heat exchanger relative to a flow of air drawn in by the cooling fan and in isolation from the most upstream heat exchanger to remove dust contained in the air drawn in by the cooling fan. The dustproof net is provided with a support structure for supporting the dustproof net on members that form the compartment.