Portable Oxygen Concentrator With Battery plays an important role in the medical and daily health care fields, among which the adsorption and desorption efficiency of molecular sieves is a key factor affecting its oxygen production performance.
Molecular sieve is a material with a uniform microporous structure. In the oxygen concentrator, it uses the difference in the size and polarity of different gas molecules to separate nitrogen and oxygen in the air. During the adsorption process, when air passes through the molecular sieve bed, nitrogen molecules will be adsorbed and retained in the pores by the molecular sieve due to their smaller molecular diameter and stronger adsorption, while oxygen molecules are relatively less adsorbed and enriched to pass through, thereby achieving oxygen concentration. In order to improve the adsorption efficiency, the selection of molecular sieves is crucial. For example, lithium-based molecular sieves have a high nitrogen adsorption capacity and selectivity, and can effectively adsorb nitrogen in a shorter time, thereby increasing the output concentration of oxygen.
The desorption process is to release the adsorbed nitrogen from the molecular sieve pores so that the molecular sieve can carry out the next round of adsorption cycle. Usually, the decompression desorption method is used to reduce the pressure of the molecular sieve bed, so that the nitrogen molecules are converted from the adsorbed state to the free state and leave the molecular sieve. The desorption efficiency directly affects the frequency and efficiency of the entire oxygen production cycle. If the desorption is not sufficient, the residual nitrogen will gradually accumulate, reducing the adsorption capacity of the molecular sieve, and thus affecting the purity and output of oxygen. Therefore, accurate control of desorption parameters such as desorption pressure, time, and gas flow is critical to improving the desorption efficiency. For example, by optimizing the opening and closing time of the solenoid valve and the accuracy of the pressure regulating device, the desorption process can be carried out quickly and thoroughly.
There are many factors that affect the adsorption and desorption efficiency of molecular sieves. Temperature has a significant impact on the performance of molecular sieves. Low temperature is conducive to adsorption and high temperature is conducive to desorption. However, in the Portable Oxygen Concentrator With Battery, energy consumption and equipment stability need to be considered. Heat dissipation or heating devices are usually used to maintain a suitable operating temperature range. In addition, air humidity will also interfere with the adsorption process of molecular sieves. Excessive humidity may cause condensation on the surface of the molecular sieve and reduce its adsorption activity. Therefore, an air drying device is usually equipped at the air inlet end to ensure that the air humidity entering the molecular sieve bed is within a suitable range.
In order to improve the adsorption and desorption efficiency of molecular sieves, continuous technical research and development is indispensable. The exploration of new molecular sieve materials, such as the development of composite materials with higher nitrogen adsorption capacity and faster adsorption and desorption rates, is expected to further improve the performance of oxygen concentrators. At the same time, optimizing the overall structural design of the equipment, such as improving the layout of the gas flow channel, reducing the gas flow resistance, and allowing air to pass through the molecular sieve bed more evenly, can also effectively improve the working efficiency of the molecular sieve, thereby providing users with a more stable and efficient portable oxygen supply to meet the oxygen demand in different scenarios.
