US Patent 7753995 Gas concentrator

A revolving gas adsorption concentrator uses about 300 degree centigrade of hot desorption air. The revolving gas adsorption concentrator prevents leakage of such hot desorption air. An elastic seal which has elasticity divides a honeycomb shape rotor into a desorption zone and an adsorption zone and touches the honeycomb shape rotor. A heat-resistant seal comprises of material whose heat resistance is higher than elastic seal. The heat-resistant seal has two plates which has a mutually opened spacing to prevent hot gas from going to the elastic seal based on the labyrinth effectiveness. The elastic seal is formed in the outside of desorption zone from heat-resistant seal. The seal of the hot desorption air is almost blocked by heat-resistant seal and the desorption air which leaked slightly can be thoroughly blocked completely by elastic seal.