Vane Rotary Compressor Counterweight Design for Noise Reduction
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Solution Overview
Problem
Conventional vane rotary compressors experience hitting noise and internal leaks due to the delay of vane rotation and friction between the vane tip and cylinder, leading to reduced suction flow rates and compressor durability.
Innovation Solution
A vane rotary compressor design with a vane having a weight part at its tip, where the center of gravity is positioned away from the hinge, enhancing the rotational moment and incorporating a counter weight for increased mass, allowing the vane to contact the cylinder in a rolling friction manner with a shifting contact point, thereby reducing friction and internal leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a linear vane is used in a conventional vane rotary compressor, then the structure is simple, but hitting noise occurs due to delay of vane rotation and friction between the vane tip and cylinder
Solution Approach 1:
A counterweight is provided on the vane to adjust its center of gravity position. By strategically positioning the center of gravity, the vane's rotational moment is enhanced, enabling it to overcome friction with the cylinder and rotate timely, thereby preventing hitting noise while maintaining structural simplicity
Solution Approach 2:
The center of gravity position of the vane is changed by adding a counterweight. This parameter change modifies the vane's rotational characteristics, allowing it to maintain proper contact with the cylinder without excessive friction or delay, eliminating hitting noise
2Reliability
If the vane tip contacts the cylinder to prevent internal leaks, then compression efficiency improves, but friction increases leading to wear and reduced durability
Solution Approach 1:
The counterweight positions the vane's center of gravity to optimize the rotational moment, ensuring the vane tip maintains adequate contact with the cylinder for sealing purposes while preventing excessive friction that would cause wear and reduce durability
3Ease of operation
If the vane rotates timely to prevent hitting noise, then operational smoothness improves, but the vane may lose contact with the cylinder causing internal leaks
Solution Approach 1:
The counterweight creates an optimal balance where the vane's rotational moment is sufficient to prevent hitting noise while maintaining continuous contact with the cylinder, thereby achieving both operational smoothness and reliable sealing without internal leaks
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 effectively prevents hitting noise and internal leaks, improving compressor performance and durability by maximizing the rotational moment of the vane and reducing friction, ensuring efficient operation and extended lifespan.
Implementation Method 1
a vane, one end of which is hinge-coupled to one side of an outer peripheral surface of the rotor so that the vane rotates toward an inner peripheral surface of a cylinder, wherein the vane has a weight part formed at a tip portion thereof such that a center of gravity of the vane is formed at one side of the tip portion of the vane
Implementation Method 2
allowing the vane to contact the cylinder in a rolling friction manner with a shifting contact point, thereby reducing friction and internal leaks
Data Source
AI summary
The present invention relates to a vane rotary compressor wherein the volume of a compression room is reduced and a fluid is compressed when a rotor rotates. According to one embodiment of the present invention, the present invention provides the vane rotary compressor for maximizing the rotational moment of a vane by extending a weight part at a front end part of the curved blade type vane so as to remove the hitting noise due to the delay of the rotational operation of the vane when the rotor is rotated, and increasing the performance by reducing the internal leak.