Patent ID: 8105050

Claim:
An ejector comprising: an ejector functional unit that includes a nozzle, which depressurizes and expands high pressure fluid supplied thereto, and a body, which is joined to the nozzle, wherein the body has: a fluid suction opening, through which fluid is drawn into an interior of the body by a vacuum force created by high velocity fluid that is discharged from the nozzle; and a pressurizing portion, in which a mixture of the fluid discharged from the nozzle and the fluid drawn through the fluid suction opening is pressurized; and a housing that is configured into a tubular form and receives at least a portion of the ejector functional unit, wherein: a housing side opening radially penetrates through an outer peripheral wall surface and an inner peripheral wall surface of the housing and communicates with the fluid suction opening of the body; the housing side opening is adapted to join with a suction opening side external device, through which the fluid is drawn into the fluid suction opening; the housing includes: a first cover that is configured into a tubular form and receives an upstream side portion of the elector functional unit, at which the nozzle is located; a second cover that is configured into a tubular form and receives a downstream side portion of the ejector functional unit, at which the pressurizing portion is located; and a block that has first to third openings, which are in communication with each other, wherein: a downstream end portion of the first cover is joined to the first opening of the block; an upstream end portion of the second cover is joined to the second opening of the block; the block is positioned relative to the ejector functional unit such that the third opening of the block, which forms the housing side opening, communicates with the fluid suction opening of the body; and at least one of an upstream end portion of the first cover and a downstream end portion of the second cover has a connecting portion, which is adapted to connect with a corresponding external device.