Turbo Compressor Oil Cooler Layout for Air-Tight Refrigeration
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Solution Overview
Problem
Turbo compressors in refrigeration systems face challenges in achieving high air-tightness due to complex oil piping configurations outside the compressor case, leading to significant air and oil leakage issues that complicate compliance with air-tightness tests.
Innovation Solution
The turbo compressor design integrates the oil cooler and piping within the compressor case, eliminating external piping and joints, thereby ensuring that the primary and secondary piping, along with the oil cooler, are contained within the case to prevent air and oil leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the oil cooler and piping are disposed outside the compressor case, then the oil cooling function can be provided, but the piping becomes complicated with many joints causing air and oil leakage
Solution Approach 1:
The patent merges the oil cooler and piping system inside the compressor case, integrating components that were previously external. The oil cooler is positioned within the case and connected to the oil tank and sliding parts through internal passages, eliminating external piping and joints. This integration directly reduces air and oil leakage points while maintaining the oil cooling function, thereby improving air-tightness and reducing device complexity.
Solution Approach 2:
The oil cooler is nested within the compressor case, with the cooling passages formed inside the case structure. The primary piping connecting the oil tank to the oil cooler and the secondary piping connecting the oil cooler to the sliding parts are all disposed within the case, creating a nested configuration that minimizes external connections and potential leakage points.
2Reliability
If external piping is used for oil cooler connection, then oil cooling can be achieved, but air leakage and oil leakage increase due to multiple joints
Solution Approach 1:
The patent combines the oil cooling function with the compressor case structure itself, forming cooling passages directly within the case. This eliminates the need for separate external piping components and their associated joints, thereby preventing air and oil leakage while simplifying the manufacturing process. The oil tank, oil cooler, and sliding parts are all connected through internal passages integrated into the case.
3Reliability
If multiple joints are used in external piping, then oil delivery to sliding parts is enabled, but air-tightness test standards become difficult to meet
Solution Approach 1:
The patent integrates the oil delivery system within the compressor case, merging the oil tank, oil cooler, and sliding parts connections into a unified internal structure. This eliminates multiple external joints that would compromise air-tightness, allowing the compressor to easily meet air-tightness test standards while maintaining reliable oil delivery to all sliding parts.
Solution Approach 2:
The oil delivery system is nested within the compressor case, with all piping and the oil cooler contained inside. This nested configuration minimizes the number of joints by eliminating external connections, thereby improving air-tightness and reducing the complexity associated with multiple joints while ensuring reliable oil delivery to sliding parts.
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 enhances the air-tightness property of the turbo compressor, allowing it to easily meet air-tightness test standards by minimizing leakage points and ensuring reliable operation.
Implementation Method 1
an oil cooler for cooling the lubricant oil
Data Source
AI summary
A turbo compressor includes a case; a plurality of compression stages which is disposed rotatably with respect to the case via sliding parts; an oil tank in which lubricant oils to be supplied to the sliding parts are stored; an oil cooler for cooling the lubricant oils; a primary piping for communicating the oil tank with the oil cooler; and a secondary piping for communicating the oil cooler with the sliding parts, wherein an accommodation space in which the oil cooler is accommodated is formed in the case, and the primary piping and the secondary piping are disposed within the case.