Compressor Oil Level Sensing Using Capacitance Feedback Control

The patent replaces traditional mechanical oil level detection methods with a capacitive sensing system. The detection unit uses capacitor plates that detect oil level through changes in capacitance values, eliminating the need for mechanical sensors or visual inspection methods. This substitution enables continuous, accurate, and contactless monitoring of oil levels, directly resolving the contradiction by providing precise measurement without triggering unnecessary oil collection operations.

The patent implements a feedback control system where the detection unit continuously monitors oil level capacitance values and provides real-time feedback to the control unit. The control unit compares detected values against reference ranges and automatically triggers oil collection only when actually needed. This closed-loop feedback mechanism eliminates the energy waste from frequent unnecessary operations while maintaining accurate oil level monitoring.

The capacitive detection system replaces unreliable mechanical or visual oil level detection methods. By measuring capacitance changes caused by oil level variations, the system provides reliable, continuous monitoring that accurately determines when oil collection is actually needed. This substitution significantly reduces compressor downtime by preventing both unnecessary and overdue oil collection operations.

The patent enables continuous oil level monitoring through the capacitive sensing system, which operates without interruption throughout compressor operation. The detection unit continuously measures capacitance values, and the control unit continuously processes this data to determine optimal oil collection timing. This continuous monitoring ensures the compressor operates reliably without unnecessary interruptions while maintaining proper oil levels.

The feedback control system continuously monitors actual oil levels through capacitance measurements and compares them against reference ranges. Oil collection operations are triggered only when the detected oil level falls below the acceptable threshold, ensuring oil quantity is maintained without unnecessary operations. This precise feedback control directly improves productivity by eliminating energy-wasting frequent oil collection while maintaining proper oil levels.

The capacitive detection system and automated control work together to enable the system to self-monitor and self-regulate oil levels without external intervention. The detection unit automatically detects oil level changes, the control unit processes the information, and triggers oil collection only when genuinely needed. This self-service capability maintains proper oil quantity while maximizing operational efficiency by eliminating unnecessary manual interventions.