Jet pump for use in e.g. compressed air generator, has suction chamber with drive nozzle arranged downstream of diffuser that is arranged downstream of compression chamber, where transition is formed between diffuser and compression chamber

摘要

The pump (1) has an outlet (26) provided for a water-pressurized air-foam mixture, and a suction chamber (18) arranged between an inlet (2) and the outlet. The chamber is provided with a drive nozzle (5), a diffuser (15) and an air inlet. A cone (6) is arranged in front of an inlet opening of the nozzle. The nozzle is arranged downstream of the diffuser in which foam formation takes place. The diffuser is arranged downstream of a common compression chamber. A continuous transition is formed between the diffuser and the compression chamber. Independent claims are also included for the following: (1) a fire extinguishing nozzle arrangement comprising a fire extinguishing jet regulator arranged at an outlet (2) a compressed air generator comprising a separator arranged downstream of a jet pump.