| 摘要 |
PURPOSE:To aim at compactification in a pump by setting up a jet pump, consisting of a nozzle and a venturi, solidly in a centrifugal pump. CONSTITUTION:At the backside of a guide vane member 15, there are provided with a guide part 17 and a jet pump consisting of a half venturi 18a and a half nozzle 19a. A half venturi 18b and a half nozzle 19b are joined together with the half venturi 18a and the half nozzle 19a through a tapped hole 21 via a hole 27, constituting one jet pump. Consequently, this jet pump can be formed in solid molding to the guide vane member 15 or an essential component and a partition wall 22, so that cost is reduced and, what is more, the pump is miniaturizable as a whole.
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