Piston Compressor With Eccentric Lifting Element for Compact Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Piston compressors require a significant installation space and have complex designs, which is problematic for vehicles with limited space.
Innovation Solution
A piston compressor design featuring an eccentric lifting element connected to a shaft, allowing pistons to move between maximum and minimum positions during shaft rotation, with an angular arrangement of compressor cylinders to reduce extension and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional piston compressor design is used, then reliable compression function is achieved, but installation space requirement increases
Solution Approach 1:
The patent transitions from traditional linear/crank-based piston motion to a rotational dimension by using a cam mechanism where the cam rotates around an axis. This dimensional change allows the piston to be driven by rotational motion of the cam profile, reducing the axial extension of the compressor while maintaining the compression function. The cam rotation axis is arranged perpendicular to the piston movement direction, creating a compact three-dimensional layout.
Solution Approach 2:
The patent integrates multiple components into a nested configuration where the cam mechanism is positioned within the compressor housing, and the piston moves within the compressor cylinder that is itself part of the compact assembly. The connecting rod connects the cam follower to the piston in a space-efficient manner, nesting the transmission mechanism within the overall compressor structure to minimize external dimensions.
2Device complexity
If traditional piston compressor design is used, then compression function is achieved, but design complexity increases
Solution Approach 1:
The patent extracts the complex crank mechanism and connecting rod assembly from traditional piston compressors and replaces it with a simplified cam-follower-piston direct drive system. The cam profile itself defines the piston motion characteristics, eliminating the need for separate crank arms, connecting rods, and multiple bearings, thereby reducing design complexity while maintaining reliable compression function.
Solution Approach 2:
The cam mechanism serves multiple functions simultaneously: it converts rotational motion to reciprocating piston motion, defines the timing of compression strokes, and controls the piston velocity profile through its profile geometry. This multi-functionality reduces the number of separate components needed compared to traditional crank-based designs, simplifying the overall design.
3Volume of moving object
If compact compressor design is implemented, then installation space is reduced, but resistance to heat and torque variations decreases
Solution Approach 1:
The patent arranges the cam rotation axis perpendicular to the piston movement direction, creating a three-dimensional compact layout that reduces the axial extension of the compressor. This spatial arrangement allows heat dissipation and torque transmission paths to be optimized independently, with the cam mechanism positioned to facilitate cooling airflow and distribute torque loads effectively within the compact volume.
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 design reduces the compressor's size and complexity while enhancing resistance to heat and torque variations, making it suitable for vehicles with improved noise and vibration performance.
Implementation Method 1
a lifting element arranged eccentrically to the axis of the shaft and provided fixed to the shaft, wherein the lifting element and the piston are configured in such way that the piston performs a movement between a maximum and a minimum lifting position when the shaft rotates
Data Source
AI summary
A piston compressor has a piston guided in a compressor cylinder, wherein the piston and the compressor cylinder form a compressor chamber for compressing a fluid. A shaft is provided that rotates around its axis. A lifting element is arranged eccentrically to the axis of the shaft and is provided fixed to the shaft. The lifting element and the piston are configured in such way that the piston performs a movement between a maximum and a minimum lifting position when the shaft rotates around its axis.