An impeller (100) for a fluid pump according to the present invention comprises a shroud (150) that has a disk shape and is drivingly rotated about a center axis, and a cover (110) comprising a cover main body (120) having a truncated cone shape with an inlet port (123) for a fluid formed at a center and a plurality of blades (130) arranged around a center axis of the cover main body (120). The cover (110) and the shroud (150) are joined to each other with a welding contacting portion (135) and a welding contacted portion (177) welded to each other in a center axis direction, in a state where another end surface of the shroud (150) and a distal end portion (131) of the blades (130) are in parallel with each other.

A gas compressor comprising a drum affixed to a rotating shaft, the drum including a plurality of compression channels between a common pressure zone and an interior surface of the drum distal to an axis of rotation. A static vane return assembly adjacent the compression channels includes vanes extending from an inlet at an outer circumference to the common pressure zone and directing gas into the common pressure zone, either through the vanes or via separate channels or ducts. Fluid inside the rotating drum forms an annular lake that is drawn through the vanes and into the common pressure zone. Fluid is then forced into the compression channels where gas in the fluid is compressed as it travels from the common pressure zone toward the interior surface. The pressurized gas is separated from the liquid prior to leaving the compression channel assembly while the liquid is returned to the lake.

Provided is a water pump including: a housing; a support shaft fixed to the housing; an impeller disposed on an upper portion of the housing; a stator disposed inside the housing; a rotor rotatably supported to the support shaft; and a connecting member inserted in the supporting shaft to rotatably support the rotor and connecting between the rotor and the impeller, thereby reducing the number of parts and simplifying a manufacturing process.

A compression wheel for a turbocharger includes: a wheel hub; and a plurality of blades that are arranged around the wheel hub in a spiral shape, where a round portion is provided at a tip of a leading edge of each of the blades.

An impeller includes: main vanes which are provided in a front stage section of a hub so as to connect an outer surface of the front stage section and an inner surface of a shroud, and are arranged at intervals in a circumferential direction of the hub, wherein the main vanes generate an oblique flow of crude oil; and splitter vanes which are provided in a rear stage section of the hub so as to be connected to an outer surface of the rear stage section, and are arranged at intervals in the circumferential direction, wherein the splitter vanes generate an axial flow of the crude oil.

An impeller for use in an aquarium filter pump includes a shaft and a plurality of impeller blades radially extending from the shaft. Each of the impeller blades includes opposite blade faces. A depression is in each of the blade faces and aids in pushing the water. The depression can be a variety of shapes and can have its deepest portion along one of the edges of the blade.

Provided are an impeller and a centrifugal pump that can be simplified in structure and reduced in weight and cost, and that can be integrally molded by a mold or the like. In a centrifugal pump including a housing having an inlet, an outlet and an impeller chamber, an impeller is disposed in the impeller chamber and is rotationally driven by a driving shaft. The impeller includes: a shaft part connected to the driving shaft to rotate about an axis line extending toward the inlet; blades protruding radially outward from an outer periphery of the shaft part; and an annular shroud plate continuous with the blades so as to cover a tip side area of the blades in order to be disposed adjacent to an inner wall of the housing on the inlet side.

An impeller for use in an aquarium filter pump includes a shaft and a plurality of impeller blades radially extending from the shaft. Each of the impeller blades includes opposite blade faces. A depression is in each of the blade faces and aids in pushing the water. The depression can be a variety of shapes and can have its deepest portion along one of the edges of the blade.

An impeller includes a shroud including an inlet, a hub facing the shroud; and a plurality of blades disposed between the hub and the shroud and arranged circumferential direction along a circumference of the inlet. Wherein each of the plurality of blades has a slot which is positioned adjacent to the inlet.

The catheter device comprises a drive shaft connected to a motor, and a rotor mounted on the drive shaft at the distal end section. The rotor has a frame structure which is formed by a screw-like boundary frame and rotor struts extending radially inwards from the boundary frame. The rotor struts are fastened to the drive shaft by their ends opposite the boundary frame. Between the boundary frame and the drive shaft extends an elastic covering. The frame structure is made of an elastic material such that, after forced compression, the rotor unfolds automatically.