Patent ID: 9322308
Filing Date: 2016-04-26
CPC Classification: F01N,F04B,F04F

Claim Text:
1. An ejector comprising: an ejector block formed with an ejector housing hole which communicates with an air supply port at a base end thereof; a nozzle housed in the ejector housing hole, the nozzle having: an inflow hole communicating with the air supply port; a focusing hole smaller in cross section size than the inflow hole and continuous from the inflow hole; and a diffusion hole continuous from the focusing hole and being gradually increased in cross section size toward a distal end of the nozzle; a diffuser housed in the ejector housing hole and axially aligned with the nozzle, the diffuser and the distal end of the nozzle forming a sucking space which communicates with the diffusion hole, and communicates with the ejector housing hole via a suction port, the diffuser being formed with: a guiding hole communicating with the sucking space; and an ejecting port continuous from the guiding hole for discharging air ejected from the nozzle and air flowed from a suction port; a muffler main body having a cylindrical portion covering the ejecting port and a distal-end wall portion integrally formed with one end of the cylindrical portion, the muffler main body is formed with a silencing chamber which communicates with the ejecting port; a cylindrical hollow silencing member arranged in the cylindrical portion; and an exhaust opening provided so as to face the ejecting port at the distal-end wall portion, the exhaust opening having a longitudinal axis coaxially aligned with a longitudinal axis of the ejecting port.