Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.

Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.

Abstract: A backfeed stage of a radial turbo fluid energy machine having a backfeed channel extending annularly about an axis and four sections adjacent in the flow direction through which process fluid flows. A first section conducts the process fluid radially outward; a second section deflects the process fluid from radially outward to radially inward; a third section conducts the process fluid radially inward; a fourth section redirects the process fluid in the axial direction; the third section has first guide vanes defining flow channels of the backfeed channel in relation to each other in the circumferential direction; the backfeed stage has second guide vanes downstream of the first guide vanes defining the flow channels of the backfeed channel in relation to each other in the circumferential direction. The first guide vanes are arranged only in the third section, the second guide vanes are arranged only in the fourth section.

Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.

Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.

Abstract: A backfeed stage of a radial turbo fluid energy machine having a backfeed channel extending annularly about an axis and four sections adjacent in the flow direction through which process fluid flows. A first section conducts the process fluid radially outward; a second section deflects the process fluid from radially outward to radially inward; a third section conducts the process fluid radially inward; a fourth section redirects the process fluid in the axial direction; the third section has first guide vanes defining flow channels of the backfeed channel in relation to each other in the circumferential direction; the backfeed stage has second guide vanes downstream of the first guide vanes defining the flow channels of the backfeed channel in relation to each other in the circumferential direction. The first guide vanes are arranged only in the third section, the second guide vanes are arranged only in the fourth section.