Screen Intake System with Comb Knife Elements for Cooling Air
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Solution Overview
Problem
Self-propelled harvesting machines face air contamination issues during harvesting, leading to clogging of cooling system screens due to large leaves and long-stemmed plant parts, which reduces cooling air supply and requires frequent manual cleaning, potentially causing engine damage and operational disruptions.
Innovation Solution
A screen intake system with comb-like knife elements on the surface and a suction device, featuring cutting edges that perform a pulling cut to effectively shred and remove adhering plant material, ensuring continuous cleaning and prevention of clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screen is arranged to filter impurities from cooling air, then the cooling air supply is improved, but the screen clogs with plant material requiring frequent manual cleaning
Solution Approach 1:
The system employs a suction device that automatically removes plant material from the screen surface without requiring manual intervention. The suction device is integrated into the cooling air intake system and continuously operates to prevent clogging, enabling the system to maintain itself during operation.
Solution Approach 2:
The suction device performs preliminary removal of plant material before it can accumulate to clogging levels. By continuously suctioning the screen surface, the system prevents the formation of significant clogs that would require shutdowns for manual cleaning.
2Reliability
If the screen is cleaned manually, then the cooling system performance is restored, but operational downtime and maintenance costs increase
Solution Approach 1:
The suction device enables the cooling system to clean itself during operation, eliminating the need for manual cleaning interruptions. The system maintains continuous cooling performance without requiring operational downtime for maintenance.
Solution Approach 2:
The suction device operates continuously during cooling system operation to maintain screen clearance. This continuous action ensures that cooling performance is maintained without interruption, avoiding the downtime associated with manual cleaning.
3Productivity
If large leaves and long-stemmed plant parts are present in the air, then harvesting productivity is maintained, but these parts clog the cooling system screen
Solution Approach 1:
The suction device extracts and removes large leaves and long-stemmed plant parts from the cooling air stream before they can reach and clog the screen. This extraction function allows the system to maintain high harvesting productivity while preventing screen clogging by removing the harmful particles at the intake stage.
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
The system reliably breaks down large-leaved and long-stemmed plant parts, allowing complete removal by the suction device, maintaining a consistent cooling air supply to the heat exchanger and preventing engine damage, thus reducing maintenance costs and downtime.
Implementation Method 1
a suction device (23) which is designed to remove and to transport the foreign matter
Data Source
Figure 1
Figure 2~3
Figure 4~7
AI summary
The system (6) has comb like elements arranged at a surface of a wire (9) and formed as a as a first knife. Connecting strips are transverse to each other with spacing running attitude. One of the connecting strips is provided with the first knife, where cutting edges of the knife produce a drawing cut. The elements are formed at two front ends of a suction device (23) or attachment element and formed as a second knife, where cutting edges of the knife produce a pulling cut. The suction device is connected to the attachment element and executes horizontal movement relative to the wire. The wire is designed as a screen and a perforated plate.