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A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfer conduit connected between the fi

A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfer conduit connected between the first low side sump of the first compressor and the second low side sump of the second compressor. The system also includes a normally open check valve in the oil transfer conduit. Additionally, a bleed is provided to effect oil transfer via the oil transfer conduit when the normally open valve is closed.

대표청구항 ▼

What is claimed is: 1. A compressor system comprising:a first compressor in a first casing, said first compressor having a first low side lubricant sump;a second compressor in a second casing, said second compressor having a second low side lubricant sump;said first and second compressors being conn

What is claimed is: 1. A compressor system comprising:a first compressor in a first casing, said first compressor having a first low side lubricant sump;a second compressor in a second casing, said second compressor having a second low side lubricant sump;said first and second compressors being connected in series;a lubricant transfer conduit connected between said first low side sump of said first compressor and said second low side sump of said second compressor;a normally open check valve in said lubricant transfer conduit;said normally open check valve permitting lubricant flow between both of said lubricant sumps when both of said compressors are off;said normally open check valve permitting lubricant flow from said first lubricant sump to said second lubricant sump when said first compressor is off and said second compressor is onsaid normally open check valve being closed when both of said compressors are on; anda bypass associated with said check valve to permit lubricant flow from said second compressor casing to said first compressor casing when said normally open check valve is closed.