Patent ID: 6244827
Filing Date: 2001-06-12
Classification: F04F

Abstract:
A pumping-ejection apparatus, including:a vacuum-producing device having:a first liquid-gas ejector having a gas inlet connected to a pipe for feed of an evacuated gaseous medium;a first separator having a pipe for discharge of compressed gas; anda first pump having a discharge side connected to a liquid inlet of the liquid-gas ejector;the pumping-ejection apparatus further comprising:a first condenser;a jet pump; andan additional vacuum-producing device including a boosting liquid-gas ejector, an outlet separator, an additional condenser and an additional pump;said jet pump includes:an evacuated medium inlet connected to the first separator,an outlet connected to a suction side of the first pump, anda motive medium inlet connected to the discharge side of the first pump;said first condenser includes:an inlet connected to an outlet from the first liquid-gas ejector, andan outlet connected to the first separator;said boosting liquid-gas ejector includes:a gas inlet connected to the pipe for discharge of compressed gas,a liquid inlet connected to a discharge side of the additional pump,an outlet connected to an inlet of the additional condenser; andsaid outlet separator is connected to an outlet of the additional condenser and connected to a suction side of the additional pump.