Disclosed herein are a dual inlet volute with an impeller and pump for same, and related methods. In one form a pump is provided comprising a motor configured to rotate a shaft, an impeller operatively coupled to the shaft, and a volute housing the impeller, the volute having a first inlet, a second inlet, and a discharge in fluid communication with the first and second inlets.

Methods and systems are provided for a turbocharger. In one example, a system comprises a compressor housing clamped to a bearing housing via a clamp ring. The clamp ring may be configured to at least partially detach the compressor and allow the compressor to rotate and/or shift in response to a force.

A system for controlling the clearance distance between an impeller blade tip of a centrifugal compressor and a radially inner surface of an impeller shroud in a turbine engine. The system comprises a high pressure air source, an air piston mounted between an engine casing and the shroud and adapted to receive high pressure air from the high pressure air source, a mounting arm coupling the shroud and air piston, and a slidable coupling adapted to allow axial movement of the shroud and joining the shroud to an axial member.

A motor-fan assembly includes a motor assembly having a rotatable shaft extending therethrough and a working fan assembly having at least one working fan rotated by the rotatable shaft. The motor-fan assembly includes a motor cover that substantially encloses the motor assembly. The motor assembly provides a cover opening extending therethrough and the rotatable shaft extends through the opening. The motor-fan assembly also includes a cooling fan assembly with at least one cooling fan rotated by the rotatable shaft which fan draws cooling airflow over the motor assembly. A motor vent cover is coupled to the motor cover with the at least one cooling fan therebetween. The motor vent cover has a cooling air outlet through which cooling airflow is exhausted.

A motor-fan assembly includes an assembly housing which supports a motor assembly, a working fan assembly which includes a working fan rotated by the motor assembly which draws in and exhausts working air, and a cooling fan assembly which includes a cooling fan rotated by the motor assembly which draws in and exhausts cooling air. The assembly housing includes a motor vent cover associated with the cooling fan assembly, wherein the motor vent cover further includes a sidewall with at least one vent hole therethrough and at least one socket aligned with the at least one vent hole. The assembly also includes a body having a tube opening extending therethrough, and an inner facing surface with at least one tail receivable in the at least one socket so that the at least one vent hole is contiguous with the tube opening.

A fan motor for a vacuum cleaner includes a motor mount defining a cooling flow path inlet, an impeller, an impeller cover defining an air inlet, an air discharge opening defined at the motor mount and configured to discharge air to an outer space of the motor mount, and a cooling flow path outlet defined vertically above the motor mount. The cooling flow path inlet is configured to introduce air from the outer space of the motor mount into an inner space of the motor mount to cool the motor part, and the cooling flow path outlet is configured to discharge air from the inner space of the motor mount toward a space that is defined between the impeller and the air discharge opening based on the space between the impeller and the air discharge opening having a lower pressure than the inner space of the motor mount.

A flow generator according to an embodiment of the present invention includes an upper fan configured to suction upper air and generate a first airflow, an upper fan housing configured to accommodate the upper fan from a lower side thereof and comprising a first discharge part through which the suctioned upper air is discharged, a lower fan configured to suction lower air and generate a second airflow, a lower fan housing configured to accommodate the lower fan from an upper side thereof and comprising a second discharge part through which the suctioned lower air is discharged, an air guide disposed between the upper fan and the lower fan to guide generation of a third airflow in which the first airflow and the second airflow are mixed with each other, and a control unit configured to control a rotational speed of the lower fan or the upper fan to adjust a discharge direction of the third airflow, wherein the first discharge part is disposed to face the second discharge part with respect to the flow guide part.

A gas compression device comprises a first impeller, a rotary shaft on which the first impeller is mounted, and a plurality of rotating members through which the rotary shaft is inserted so that the plurality of rotating members rotate with the rotary shaft. The rotary shaft includes a flange having a first surface perpendicular to an axial direction and projecting in radial directions of the rotary shaft, a rear surface of the first impeller is in contact with the first surface, and the plurality of rotating members are disposed on an opposite side of the flange from the first impeller.

A method for manufacturing a compressor includes a step of installing a bundle having an O-ring on an outer peripheral surface inside a lower half casing so that a position of the O-ring in an axial direction coincides with a position of a lower half relief groove, a step of installing an upper half casing having an upper half relief groove on the lower half casing so that a position of the upper half relief groove in the axial direction coincides with the position of the O-ring, and a step of pressing the bundle in the axial direction to move the O-ring to a position away from the lower half relief groove and the upper half relief groove, and bringing the O-ring into contact with the inner peripheral surface of the lower half casing and the inner peripheral surface of the upper half casing.

A rotor hanging tool includes a beam extending in parallel to an axial direction above a rotor main body, a pair of ring support portions disposed at an interval in the axial direction, connected to the beam, and attachable to and detachable from a support ring, a pair of rotor support portions disposed at an interval in the axial direction, connected to the beam, attachable to and detachable from the rotor main body at positions different from the ring support portions in the axial direction, and respectively supporting the rotor main body from below, and a vertical position adjustment unit for adjusting a position of each of the rotor support portions in a vertical direction with respect to the beam.