Compressor Connecting Rod Channel for Lubricant Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing compressors face inefficiencies in lubricant delivery to piston surfaces, leading to reduced performance and increased noise due to high lubricant flow rates at high rotation speeds, which affects both the economic life and sound quality of the compressor.
Innovation Solution
A connection rod with a fork-shaped channel structure, featuring a main channel and two guiding channels arranged at an angle, ensures targeted lubricant delivery to the piston surfaces, reducing the flow rate towards the upper casing and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lubricant is delivered from the crank long journal to the crank eccentric journal at high rotation speeds, then the lubrication performance is improved, but the noise level increases due to high lubricant flow rate hitting the upper casing
Solution Approach 1:
The patent divides the single lubricant delivery path into multiple segmented channels: a first lubricant delivery channel and a second lubricant delivery channel. This segmentation allows the lubricant flow to be distributed and controlled separately, reducing the impact flow rate on the upper casing while maintaining adequate lubrication to the piston
Solution Approach 2:
The patent applies different channel configurations at different locations: the first channel delivers lubricant to the crankpin with a specific flow rate, while the second channel delivers lubricant to the piston with a controlled flow rate. This local quality differentiation ensures adequate lubrication where needed while minimizing noise-generating spray at the upper casing
2Ease of manufacture
If the connection rod uses a traditional structure without internal channels, then the manufacturing is simpler, but the lubricant delivery to piston surfaces is less efficient
Solution Approach 1:
The patent embeds lubricant delivery channels within the connection rod body structure itself. The first and second lubricant delivery channels are nested inside the connection rod, allowing lubricant to be transported internally from the crank to the piston and crankpin, improving lubrication efficiency while maintaining a compact overall structure
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 solution enhances lubrication performance, extends the economic life of the compressor, and reduces noise levels, particularly at high operating speeds, by efficiently delivering lubricant to the piston surfaces and minimizing lubricant impact on the upper casing.
Implementation Method 1
a fluid lubricant which is provided in the lower casing and which provides ease of movement for the components operating in the compressor
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a compressor (1) comprising a casing (2); a motor (3) which is disposed in the casing (2) and which provides the movement; a piston (6) which compresses a refrigerant gas; a crank (5) which transfers the movement from the motor (3); a connection rod (7) which transfers the movement taken from the crank (5) to the piston (6); a crankpin (9) which connects the connection rod (7) and the piston (6) to each other; lubricant (4) which is provided in the casing (2) and which facilitates the movement of the crank (5), the motor (3), the piston (6) and the connection rod (7); a crank hole (10) which transfers the lubricant (4) passing through the crank (5) to the connection rod (7); a crankpin hole (11) which transfers the lubricant (4) passing through the connection rod (7) to the crankpin (9); a connection rod body (8) which extends between the crank hole (10) and the crankpin hole (11); the connection rod (7) having a channel (12) which extends from the crank hole (10) to the crankpin hole (11) in the connection rod body (8) and through which the lubricant (4) is delivered; and at least one first guiding channel (13) and at least one second guiding channel (14) which extend from the end of the channel (12) facing the crankpin hole (11) towards the connection rod body (8).