Patent ID: 9447796
Filing Date: 2016-09-20
CPC Classification: B05B,F04F

Claim Text:
1. An annular jet pump, comprising: a central ejector comprising a central pipe, a central nozzle arranged at an outlet end of the central pipe, a central mixing chamber, and a central mixing duct; and a plurality of annular ejectors arranged around a periphery of the central pipe of the central ejector; wherein each annular ejector of the plurality of annular ejectors comprises an annular nozzle arranged around the central pipe, an annular mixing chamber, and an annular mixing duct directly communicating with the annular mixing chamber; wherein an outlet of the annular mixing duct directly communicates with an inlet of the central mixing chamber of the central ejector, and an outlet of the central mixing chamber directly communicates with the central mixing duct; a primary fluid inlet arranged at an inlet end of the annular jet pump communicates with the central nozzle and the annular nozzle, a secondary fluid inlet arranged around the inlet end of the annular jet pump directly communicates with the annular mixing chamber; and a secondary annular ejector arranged at an outlet end of each annular ejector of the plurality of annular ejectors, wherein a secondary annular nozzle of the secondary annular ejector is arranged at an outlet of the secondary annular ejector, and the secondary annular nozzle of the secondary annular ejector directly communicates with a secondary annular mixing chamber of the secondary annular ejector; the outlet of the secondary annular ejector directly communicates with the central mixing chamber of the central ejector, wherein the central pipe is configured with a through hole; an outlet of the secondary annular nozzle is arranged in the secondary annular mixing chamber, and the outlet of the secondary annular nozzle faces a secondary annular mixing duct; an inlet of the secondary annular nozzle communicates with an inner bore of the central pipe through the through hole of the central pipe.