Ventilation system for volatile fluid

Abstract

Abstract A SYSTEM FOR STORING VOLATILE MATERIALS AND DISPOSING OF EXCESS VAPORS AND OVERFLOW INCLUDES A RESERVOIR WHICH MAY BE, FOR EXAMPLE, A GASOLINE TANK FOR AN AUTOBILE, AND FILTERING APPARATUS CONNECTED TO THE RESERVOIR THROUGH A MULTIDIRECTIONAL VALVE ASSEMBLY EMPLOYING A PRESSURE DIFFERENTIAL ACTUATED APERTURED DIPHRAGM HAVING A LIP CIRCUMSCRIBING THE APERTURE WHICH SERVES AS A VALVE ELEMENT SLIDABLE ON A TUBULAR VALVE SEAT. THE VALVE IS SPRING BIASED TO A NEUTRAL POSITION SEALING THE TANK OUTLET AND REMAINS IN THAT POSITION WHEN THE PRESSURE IN THE STORAGE TANK IS SUCH THAT THE TANK CAN CONTAIN THE VAPORS. WHEN AMBIENT CONDITIONS ARE SUCH AS TO CAUSE EXPANSION OF THE FLUID AND THE VAPOR THE DIAPHRAGM AND VALVE MOVE TO AN OPEN POSITION FOR PERMITTING THE VAPOR OR OVERFLOW FLUID TO FLOW THROUGH FILTERING AND DISPOSABLE APPARATUS. IF THE FILTER OR ANY OF THE LINES LEADING THEREFROM BECOME CLOGGED, OR IF PRESSURE INCREASES IN THE TANK AT A RATE WHICH CAUSES AN INCREASE OF PRESSURE ON THE DIAPHRAGM, A SECOND APERTURE IS OPENED TO PERMIT V ENTING TO ATMOSPHERE. IF SUBATMOSPHERIC PRESSURE CONDITIONS EXIST IN THE RESERVOIR THE DIAPHRAGM IS DRAWN TO A POSITION OVERLYING CONDUITS ON THE EXTERNAL WALL OF THE TUBLAR VALVE SEAT TO PERMIT VENTING TO THE ATMOSPHERE FOR PRESSURE EQUALIZATION.

Inventors

• 👤 William C Riester

Bibliographic Details