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
Method and system for expanding axial coverage in iterative reconstruction in computer tomography (CT)
Liquid crystal display and manufacturing method thereof
Image forming apparatus with enhanced display of guidance information
Double patterning method using tilt-angle deposition
Architecture for accelerated computer processing
Superconducting magnetizer
  Randomly Featured Patents
Apparatus for and methods of damage repair
Toaster with means for selection of two bread discharge positions
Digit-serial linear combining apparatus useful in dividers
Systems and methods for selecting parameters used in a portable patient monitor
Devices, systems, and methods for generating a reference voltage
System and method for providing highly-available volume mount points
Questions and control paradigms for detecting deception by measuring brain activity
SPE-4 peptides
Question and answer cube
Method of manufacture coated wood articles