SYSTEMS AND METHODS FOR MITIGATING NOISE AND VIBRATION IN A PORTABLE OXYGEN CONCENTRATOR

• Main Authors: HANSEN, Peter James, TAYLOR, Brenton Alan, CHIN, Daniel Wayne
• Format: Patent
• Language: English; French; German
• Published: 07.02.2024
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HEAT PUMP SYSTEMS; HEATING; HUMAN NECESSITIES; HYGIENE; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; MEDICAL OR VETERINARY SCIENCE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; SEPARATION; TRANSPORTING; WEAPONS

A portable oxygen concentrator includes a compressor and a controller. The compressor includes a motor, at least one chamber, and at least one piston operably coupled to the motor and movable within the at least one chamber. In some embodiments, the controller is configured to: determine actual motor speeds for commutations steps of the motor during a first rotational cycle; determine an average motor speed during the first rotational cycle; determine a voltage pattern based at least on a comparison of the average motor speed during the first rotational cycle and the actual motor speeds for the commutation steps of the motor during the first rotational cycle; and cause the voltage pattern to be applied to the motor during a second rotational cycle to reduce differences between applied motor torque and variable torque load imparted by the at least one piston.