| 摘要 |
<p>The concentrator separates one gas (i.e. oxygen) from a gas mixture (i.e. air) through the process of vacuum swing adsorption (VSA). An adsorber material is located within an adsorber bed. The adsorber bed has an inlet and an outlet. A valve is located downstream of the outlet. A pump, such as a blower, is provided upstream of the adsorber bed to drive a mixed gas into the adsorber bed. The adsorber material selectively adsorbs an undesirable gas (i.e. nitrogen) leaving a desirable gas (i.e. oxygen) from the mixture to pass through the outlet and through the valve. The pump is reversible. When the adsorber material becomes saturated, the pump is reversed and a vacuum is drawn on the adsorber bed. The valve is closed while the pump is operating in this reverse direction. After the adsorber material has desorbed the undesirable gas, the pump again reverses and the cycle is repeated.</p> |
