Curved Connecting Rod Compressor for Longer Piston Stroke
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Solution Overview
Problem
Existing compressors with rectangular connecting rods have a limited distance from the center of the crankshaft to the center of the crank pin, resulting in a small piston stroke and reduced air exhaust, which is inefficient.
Innovation Solution
The compressor design incorporates curved connecting rods that increase the distance from the center of the crankshaft to the center of the crank pin, allowing for a longer piston stroke and increased air exhaust by positioning the curved rods to avoid the crank pin, thereby overcoming the structural limitations of traditional compressors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a rectangular connecting rod is used with a short distance from the crankshaft center to the crank pin center, then the connecting rod structure is simple, but the piston stroke is small and the air exhaust amount is reduced
Solution Approach 1:
The patent applies curvature to the connecting rod by replacing the traditional rectangular shape with a curved connecting rod design. This curvature allows the crank pin center to be positioned farther from the crankshaft center while maintaining structural integrity, thereby increasing the piston stroke and air exhaust amount without significantly complicating the overall structure
2Productivity
If the distance from the crankshaft center to the crank pin center is increased, then the piston stroke and air exhaust amount are increased, but the connecting rod structure becomes more complex and is limited by traditional design
Solution Approach 1:
The curved connecting rod design enables increased distance between crankshaft center and crank pin center by utilizing a curved geometry that optimizes the mechanical path. This allows the piston stroke to be extended and air exhaust increased while keeping the connecting rod structure relatively simple through the elegant curved form rather than complex articulated mechanisms
3Length of moving object
If the distance from the crankshaft center to the crank pin center is increased, then the piston stroke is increased, but the traditional connecting rod structure cannot accommodate this increase
Solution Approach 1:
The curved connecting rod provides a smooth transitional path that accommodates the increased distance between crankshaft center and crank pin center. The curved geometry naturally optimizes the motion path, allowing for increased piston stroke while maintaining structural simplicity and avoiding the need for complex multi-link mechanisms
Data Source
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Figure 3~4
AI summary
A compressor having curved connecting rods, comprising cylinders (8), pistons (9), piston pins (10), curved connecting rods (11), a swing rod (12), a crank pin (13), a crankshaft (14) and the other components; when the compressor having curved connecting rods works, a power machine driving the crankshaft (14) to rotate, the rotation of the crankshaft (14) driving the crank pin (13) to push the swing rod (12) to swing left and right, and the movement, towards the left and right, of the swing rod (12) driving the curved connecting rods (11) and the pistons (9) to reciprocate within the cylinders (8) and perform work in a compression manner. Since the curved connecting rods (11) avoid the position of the crank pin (13), the problem that the crank pin (13) is limited by the compressor connecting rods is solved, and the distance from the center of the crankshaft (14) to the center of the crank pin (13) is increased, increasing the stroke of the pistons (9), increasing the amount of air exhaust, raising the amount of air exhaust of the compressor.