Static freezing valve and a treatment chamber with such a valve

摘要

A static valve (1) consists of a piece of tubing (2a) containing a fluid (2b). A cooling source (3) is situated in contact with the tube, large enough to freeze the fluid contained in the tube and seal it well enough to withstand pressure of up to 150 bar. The tube can also be quickly heated by an electrical current (5a) and (5b), fast enough to thaw frozen fluid in less than 10 seconds and clear the passage. The tube itself is made of a mechanically resistant metallic material, which will dissipate heat by an ohmic effect, generating heat in a controlled manner when an electric current is passed through it.