Resources Contact Us Home
Air purification system using cryogenic techniques

Image Number 2 for United States Patent #4337071.

An on-site apparatus that produces cryogenic temperatures is used to remove, by condensation, all pollutants in the air so that an ultra clean air supply is obtained for human consumption in the interior of living enclosures, such as automobiles, homes, offices, hospitals etc. In accordance with one embodiment of the invention, it can recycle the air in the enclosure, i.e. resupply the oxygen consumed by the human being and remove the carbon dioxide produced by respiration. The cryogenic temperatures are produced by a closed-cycle operated refrigeration system consisting of a compressor, a Joule-Thompson valve (JTV), multi-stage heat exchangers and expanders. Cold traps (filters) of different cryogenic temperatures are built into the system to condense pollutants of different condensation temperatures. The condensed pollutants can be disposed of by periodical defrost and purge of the system.

  Recently Added Patents
Viruses lacking epithelial cell receptor entry
Cucumber plants with a compact growing habit
Direct converting apparatus, method for controlling the same, and control signal generation device
Pull through coronary sinus pacing lead
Electronic component, a semiconductor wafer and a method for producing an electronic component
System and method for removing oxide from a sensor clip assembly
Mobile terminal apparatus, radio base station apparatus and radio communication method
  Randomly Featured Patents
Grinder with easily replacing grinding tool
Rotate-to-advance catheterization system
Combined watch and bracelet
Combined fabric measuring and cutting jig and associated method
Highly cost-effective analytical device for performing immunoassays with ultra high sensitivity
Reactor coolant pump hydrostatic sealing assembly with externally pressurized hydraulic balance chamber
Television set
Steering column guide structure
Method and installation for carrying out a three phase chemical reaction under pressure