| 摘要 |
The present invention is to disclose an impeller for two-step centrifugal blower. According to the present invention, a mixed gas of a flow channel of a one-step impeller is evenly spread and is moved to a two-step impeller as a lower cap of each of the impellers is bent at a predetermined angle. Mixed gas of a flow channel of the two-step impeller is evenly spread also and is discharged to an outlet. A turbulent flow of the mixed gas generated in an inlet area of the existing one-step impeller is removed and a turbulent flow of the mixture gas generated in the two-step impeller which discharges the mixture gas discharged from the one-step impeller to the outlet is removed. Thus, flow loss of the mixed gas can be reduced and air discharged from the one-step impeller and the two-step impeller passing the flow channel is evenly reached to one side of a guide vane of a diffuser which is annularly arranged on the circumference of the impeller without bias. Therefore, a noise generated when the mixed gas is pumped to the diffuser is reduced. |
