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
Rotation angle sensor
Mobile phone
Secure data exchange between data processing systems
Pet urn enclosure
Virtual billboards
Methods and devices for detecting and measuring environmental conditions in high performance device packages
Fire detector
  Randomly Featured Patents
Segmented shaft seal
Therapy device
Rotatable cutting tool with a fine-adjustment mechanism for a cutting insert
Implantable electromagnetic middle-ear bone-conduction hearing aid device
Tape recorder and magnetic tape cassette with movable tensioning and brake means
Load drive control apparatus with performances of power-consumption reduction and overheat protection
Disk storage system with write preservation during power failure
Inductive heating magnetic structure for removing condensates from electrical smoking device
Semiconductor memory device adaptable to various types of packages
Cutting jig for posterior stabilized knee prosthesis