A 5 liter oxygen concentrator is a medical device that filters oxygen from the air and delivers it to patients with breathing-related conditions works between 1 LPM - 5LPM. The device works by:
Inhaling air: The concentrator sucks in air through a filter
Pressurizing: The air is forced through a compressor and pressurized
Separating: Filters trap nitrogen, allowing oxygen to pass through into a collection tank
Delivering: The oxygen is then delivered to the patient through a mask or nasal cannula