Compressor Ejector Oil Pump Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional compressors with ejector oil pumps experience unstable oil supply due to variable gaps between the ejector and oil suction pipes, leading to inconsistent oil suction and unstable lubrication of the compression mechanism.
Innovation Solution
Incorporating a positioning portion with dowel features to precisely define the dimensions and position of the ejector pipe within the oil suction pipe, ensuring a consistent gap for oil suction and stable oil supply, and utilizing a baffle plate to create differential pressure for improved oil level management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejector pipe is simply inserted into the oil suction pipe without defined dimensions and position, then the structure is simple and easy to manufacture, but the gap for oil suction becomes variable, causing unstable oil supply to the sliding portion
Solution Approach 1:
The patent applies preliminary action by pre-defining the dimension and inserting position of the ejector pipe through a positioning portion before assembly. The positioning portion includes a positioning hole with specific dimensions and an inserting position that is predetermined during manufacturing. This ensures that when the ejector pipe is inserted into the oil suction pipe, it achieves the correct gap for stable oil suction without requiring complex adjustment mechanisms during operation.
Solution Approach 2:
The patent applies parameter changes by specifying precise dimensional parameters for the ejector pipe and positioning portion. The positioning hole has a defined inner diameter and length, and the ejector pipe has a specified outer diameter and inserting position. By controlling these parameters within specific ranges, the gap between the ejector pipe and oil suction pipe is optimized to ensure stable oil supply while maintaining manufacturing feasibility.
2Reliability
If the ejector pipe dimension and position are not defined, then manufacturing is easier, but the amount of oil sucked becomes remarkably different and unstable, leading to oil starvation of the sliding portion
Solution Approach 1:
The positioning portion is designed with predetermined dimensions and positions that are established during manufacturing. The positioning hole in the oil suction pipe has a specific inner diameter and length, and the ejector pipe has a corresponding outer diameter and inserting position. This preliminary definition of geometric parameters ensures consistent oil suction performance without requiring high-precision machining beyond standard manufacturing capabilities.
Solution Approach 2:
The patent specifies parameter ranges for the ejector pipe and positioning portion that balance manufacturing precision requirements with oil supply stability. The positioning hole inner diameter, length, and the ejector pipe outer diameter and inserting position are defined within practical manufacturing tolerances. These parameter specifications ensure stable oil suction while remaining achievable with conventional manufacturing processes.
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
This configuration ensures stable and optimal oil supply to the sliding portions of the compressor, enhancing lubrication and reducing the risk of oil starvation, thereby improving the compressor's operational reliability and efficiency.
Implementation Method 1
an ejector oil pump which uses an ejector effect produced by an ejector pipe to suck the oil from the oil reservoir through a gap between both pipes and supply it to the compression mechanism portion
Data Source
AI summary
A compressor includes an ejector oil pump which sucks the oil from an oil reservoir in the bottom part of a sealed container to an oil passage formed in a rotary shaft, and the ejector oil pump includes an oil suction pipe having one end connected to the oil passage and the other end which opens in the oil reservoir, and an ejector pipe having one end which communicates with the discharge side of a compressor mechanism portion and the other end inserted into the opening of the other end of the oil suction pipe to open. The inner diameter of the other end of the oil suction pipe is larger than the outer diameter of the other end of the ejector pipe, and the other end of the oil suction pipe is provided with first and second dowel portions which position the other end of the ejector pipe.