What is the function of the stuffing box oil lantern on a compressor?

The stuffing box oil lantern serves a crucial role in ensuring the efficiency and safety of a compressor by preventing the leakage of gas. It is specifically designed to maintain a seal around the shaft that exits the compressor. This is essential because, during the operation of the compressor, high-pressure gases can escape if there are any gaps or deficiencies in the seal.

The oil lantern typically provides lubrication to the shaft, which enhances the longevity of the sealing surfaces and helps reduce wear. At the same time, it also contributes to maintaining an effective seal by using oil to fill any minute spaces, thus preventing gas from leaking out. This function is vital for maintaining the overall performance of refrigeration systems, as any gas leak could lead to pressure losses, reduced efficiency, and safety hazards.

While the oil lantern can have secondary benefits, such as reducing wear on moving parts and potentially contributing to lower vibrations, its primary function is centered on sealing and preventing gas leakage.