公开(公告)号：US20250130602A1

公开(公告)日：2025-04-24

申请号：US18491745

申请日：2023-10-20

Applicant: Trane International Inc.

Inventor： Eric S. Mlsna ,  Jonathan Rollier

IPC: G05D9/00 ,  F04D29/70 ,  F25B47/00

Abstract: Devices, systems, and methods are disclosed for reducing leakage current in compressors, such as for heating, ventilation, and air conditioning, and refrigeration (HVAC/HVACR) systems. Several embodiments include a sensor for measuring the isolation resistance of an enclosure of a compressor. The sensor can be electronically coupled to a controller that is configured to activate a heating element mechanically coupled to the enclosure when the controller determines that the isolation resistance measured by the sensor falls indicates that the compressor is at risk of faulting. Activating the heating element causes the refrigerant mixed within the oil to evaporate, which lowers the liquid level within the compressor.