A drag pump for pumping gas and a set of vacuum pumps including the drag pump are disclosed. The drag pump comprises: a rotor configured to rotate within a stator component and to drive a gas to be pumped from a gas inlet to a gas outlet; magnetic bearings for rotatably mounting the rotor within the pump; wherein at least a portion of the rotor and stator component configured to contact the gas to be pumped are configured for operation at temperatures above 130 C.

A delivery device provides two medium flows guided separately from one another in a fuel-operated vehicle heater. The delivery device includes a first delivery wheel (14) rotatable about a first rotation axis (A) for delivering a first medium, a second delivery wheel (16) rotatable about a second rotation axis (A) for delivering a second medium, as well as a drive motor (12) for driving the first delivery wheel (14) and the second delivery wheel (16). At least one delivery wheel (16) is coupled with the drive motor (12) via a magnetic coupling device (60).

A boundary layer turbomachine (100) can include a housing (110) defining an interior space (115) and having an inlet opening (112) and an outlet (113) opening to facilitate movement of a fluid through the housing (110). The boundary layer turbomachine (100) can also include a rotor assembly (120) disposed in the rotor chamber (117) and configured to rotate about an axis of rotation (101). The rotor assembly (120) can have a plurality of disks (121) spaced apart along the axis of rotation (101) and defining an interior opening along the axis of rotation (101). The fluid can pass through gaps between the disks (121) and the interior opening as the fluid moves through the housing (110). Corresponding rotor assembly and partition are also provided.

A boundary layer turbomachine (100) can include a housing (110) defining an interior space (115) and having an inlet opening (112) and an outlet (113) opening to facilitate movement of a fluid through the housing (110). The boundary layer turbomachine (100) can also include a rotor assembly (120) disposed in the rotor chamber (117) and configured to rotate about an axis of rotation (101). The rotor assembly (120) can have a plurality of disks (121) spaced apart along the axis of rotation (101) and defining an interior opening along the axis of rotation (101). The fluid can pass through gaps between the disks (121) and the interior opening as the fluid moves through the housing (110). Corresponding rotor assembly and partition are also provided.

A turbomachine includes a housing and an electric motor in the housing. The electric motor has a shaft, a stator, and a rotor on the shaft. At least one impeller is arranged in a pump housing and driven by the shaft, the impeller having at least one ring of rotor blades delimiting a ring of blade chambers. A side channel is arranged in the pump housing opposite the ring of blade chambers and extends from the pump inlet as far as the pump outlet. A ramp is arranged at an end of the side channel in a radially inner half of the side channel. The ramp starts from a channel bottom, rises in a flow direction as far as the height of the pump housing wall, and merges with its radially outer half into the pump outlet.

The invention relates to a side-channel compressor (1) for a fuel cell system (37) for conveying and/or compressing a gas, particularly hydrogen, comprising a housing (3), the housing (3) comprising a housing upper part (7) and a housing lower part (8), a compressor chamber (30) located in the housing (3), comprising at least one peripheral side channel (19), a compressor wheel (2) arranged in the housing (3), which is rotatably arranged about an axis of rotation (4), the compressor wheel (2) comprising blades (5) arranged on the periphery thereof in the region of the compressor chamber (30), and respectively a gas inlet (14) embodied in the housing and a gas outlet (16) which are fluidically interconnected by means of the compressor chamber (30), particularly the at least one side channel (19). According to the invention, the compressor wheel (2) comprises a peripheral stop ring (11) on the periphery thereof, which extends around the compressor wheel (2) in a rotationally symmetric manner in relation to the axis of rotation (4).

A system includes an inductor assembly of an agricultural implement having an inductor box with a wall configured to separate an interior of the inductor box from an exterior of the inductor box, an inductor segment, and a mounting clip. The wall includes an inner surface in the interior and an outer surface on the exterior. The inductor segment includes a mixing portion and a delivery portion, wherein the mixing portion interfaces with the inner surface and is configured to mix agricultural product and airflow into a mixture. The delivery portion is configured to convey the mixture through the wall. The mounting clip is configured to form a seal between the interior and the exterior of the inductor box, and to interface with the outer surface and the delivery portion in an installed position to couple the inductor segment to the inductor box.

A vortex pump including: a housing including a suction channel, a discharge channel, and a housing space communicating with the suction channel and the discharge channel; and an impeller housed in the housing space and configured to rotate about a rotation axis, where the housing includes an inner channel along an outer circumference of the impeller in the housing space, and a channel cross-sectional area of the inner channel is larger than a channel cross-sectional area of the suction channel and is larger than a channel cross-sectional area of the discharge channel over an entire length of the inner channel.

An impeller may include a plurality of blades disposed along a rotation direction in an outer circumferential portion of at least one end surface of two end surfaces of the impeller; a plurality of blade grooves; and an outer circumferential wall disposed at an outer circumferential edge and closing the plurality of grooves. The housing may include an opposing groove opposing a blade groove region and extending along the rotation direction of the impeller. In a plan view of the one end surface of the two end surfaces of the impeller, each of the plurality of the blades may be curved, and a central portion of each of the blades may be positioned frontward in the rotation direction of the impeller than both ends of the blade.

A side-channel blower for an internal combustion engine includes a flow housing, an impeller which rotates in the flow housing, a drive unit which drives the impeller, a housing wall with a radially delimiting housing wall, impeller blades arranged in a radially outer region of the impeller, a radial gap arranged between the impeller and the housing wall, an inlet, an outlet, and two flow channels. The housing wall radially surrounds the impeller. The impeller blades open in a radially outward direction. The two flow channels connect the inlet to the outlet and are fluidically connected to one another via intermediate spaces between the impeller blades. An interruption zone is arranged between the outlet and the inlet which interrupts the two flow channels in a peripheral direction. A radial interrupting gap is arranged between the impeller and the radially delimiting housing wall in the entire interruption zone.