System in order to ensure a regulation of pressure in an enclosure pumped by a pump, a vacuum.

摘要

P system in order to ensure a regulation of pressure in an enclosure (1) pumped by a vacuum pump (3), characterized in that a pipe (5), equipped with a motorized valve, to a variable opening (6), connects one or more stages (8) close to the outlet of the pump to one or more stages (9) close to its suction, the degree of opening of the valve (6) being controlled by a signal (10) from an electronic circuit (11) for controlling the pressure p of the enclosure (1) to a value p1, the said circuit (11) receiving as input a signal (12) is representative of the pressure p measured (13) in the enclosure. / p