What is the difference between oxygen generators with different oxygen flow rates?


When we buy oxygen generators, we often see 1L, 2L, or 3L,5L, and other signs. These signs refer to the oxygen output flow rate of the oxygen generator. Generally, 1L and 2L oxygen are mainly used for oxygen health care, and 3L and The above oxygen generators can be used for oxygen therapy. To buy a few liters of a household oxygen generator, it is necessary to figure out whether it is used for oxygen health care or oxygen therapy. Let’s learn more about the capacity of the oxygen concentrator!

1. The oxygen flow range is different

A 1-liter oxygen generator means that the oxygen generator can maintain an oxygen concentration of 90% while generating 1 liter of oxygen per minute. If more than 1 liter of oxygen is generated in one minute, the oxygen concentration will drop. Both 1 liter and 2- liter oxygen concentrators are health-care oxygen concentrators, which are suitable for health care use. This type of oxygen concentrator has the lowest production threshold and has many brands.

For the 3- liter oxygen generator, the oxygen output flow rate when inhaling oxygen is 1 to 3 liters, and the “oxygen concentration” can be stabilized above 90%, reaching the medical grade standard. It should be noted that although some 3-liter oxygen generators can adjust the oxygen flow rate of 4 liters and 5 liters, the oxygen concentration will be reduced if the oxygen flow exceeds the range of 3 liters, which is about 70% at 5 liters.

For a 5-liter oxygen generator, the oxygen output flow rate is 1~5 liters when inhaling oxygen, and the “oxygen concentration” can be stabilized at more than 90% of the medical-grade standard, that is: when the oxygen output of the 5- liter oxygen generator is 1 to 3 liters, The oxygen concentration is stable above 90%. When using 4 liters and 5 liters of flow, the oxygen concentration is still above 90% of the medical grade standard.

2. The applicable people are different

The 1 liter and 2- liter oxygen concentrators are suitable for: health-care oxygen inhalation for people with mild hypoxia, such as pregnant women with mild hypoxia, students who use their brains for a long time, white-collar workers, etc.

The 3- liter oxygen generator is suitable for people with mild to moderate respiratory diseases, cardiovascular and cerebrovascular diseases, and three highs.

The 5- liter oxygen generator is suitable for: patients with severe diseases, people who need to use ventilators, and people who need to inhale oxygen for a long time every day: patients with lung diseases such as chronic obstructive pulmonary disease, pulmonary fiber, lung resection, lung cancer, pneumoconiosis, silicosis, etc.

3. The workload that can withstand is different

Under normal circumstances, the amount of molecular sieve filled in a 5-liter oxygen generator is more than that of a 3-liter oxygen generator. At the same time, its power components are also quite different. The air compressor in a 5-liter oxygen generator can withstand a greater workload. Big. For people who need long-term daily oxygen therapy, such as COPD patients, compared to a 3-liter oxygen generator, a five-liter oxygen generator is more suitable for them.

In terms of oxygen flow, people with COPD should adopt low flow: 1.5 to 2.5 liters of oxygen per minute for oxygen therapy. Some people think that a 3- liter oxygen concentrator is sufficient. However, in terms of oxygen inhalation time, Patients with chronic obstructive pulmonary disease are advised to take oxygen therapy for more than 15 hours a day. If conditions permit, it is best to take oxygen for 24 hours.

3 liters of oxygen generator, 1.5~2.5 liters of oxygen output makes the air compressor already have a certain working load, in this case, 15 hours or 24 hours of continuous work a day for a long time, will greatly reduce the life of the compressor, It is easy to cause the occurrence of machine failure.

5 liters of oxygen concentrators, many companies have designed the 5 liters of oxygen concentrators as a 24-hour operation mechanism. Compared with the 3 liters, the compressor has a larger displacement and stronger performance. The oxygen output is 1.5 to 2.5 liters. , Because the 5-liter compressor has a larger displacement, more margin, and is in a lower load operation state, although the displacement of the 5-liter compressor is attenuated during long-term operation, it can also reach the minimum of the System Requirements, the overall life span is longer. For COPD people, this oxygen inhalation mode is more secure and appropriate. This is an important reason why many professional physicians recommend they use a 5-liter oxygen generator.

In particular, users who are powered on for 15 to 24 hours, often inhale oxygen during night rest. Among the 5-liter oxygen concentrators, there are many high-end silent and high-quality oxygen concentrators to choose from. To better meet their oxygen needs.