System for producing low-pressure expanding cavity in a cylinder to pump gas from a space

摘要

Liquid flowing through a pipe (2) from a refillable vessel (1) under the influence of an external force sucks gas from a cylinder (3) connected to the space in which the low pressure is to be produced. Acceleration of liquid particles bends the gas-liquid interface in the cylinder and gas bubbles are generated, being removed by the liquid flow.