A centrifugal compressor for a turbo-fan engine includes a shroud covering the edges of vanes of a compressor wheel mounted on an outer shaft with a clearance .alpha. left therebetween. A vertical section of the shroud includes an upstream portion extending in an axial direction, and a downstream portion curved radially outwards and extending from a downstream end of the upstream portion. The thickness of the downstream portion is increased gradually from the upstream side toward the downstream ...

A centrifugal actuator is provided for a centrifugal clutch. The centrifugal clutch includes a drive spider having a cam lever-following roller and a moveable clutch housing. The centrifugal actuator includes two bosses, each boss having a mechanism for coupling to the clutch housing. Each boss is formed to include a pin-receiving opening. The bosses are arranged in spaced-apart relation on the clutch housing to form a central slot therebetween. A cam lever having an interior wall arranged to de...

A centrifugal clutch construction having an outer driven member and an inner driving rotor assembly. The rotor assembly has a pair of spaced, radially extending, side plates mounted in fixed positions on a driving shaft, and a core fixed to the shaft between the side plates. The core is provided with diametrically opposite surfaces engaging and supporting associated pairs of clutch shoes when the shoes are in retracted position. A release plate is slidably mounted between each pair of clutch sho...

A centrifugal clutch includes a clutch weight in a plane perpendicular to a rotation axis of an input member for enabling friction fitting to an inside of a clutch housing. The clutch weight is turnably supported by a drive plate. A grooved portion is provided on a clutch weight in a position that is opposite to a drive plate. At least one end of grooved portion is closed and is formed in a turning direction of the clutch. A damping rubber supported by the drive plate abuts against an inside fac...

A centrifugal separator is configured such that a switching unit adapted to be brought into electrical conduction or electrical nonconduction is electrically connected in a drive power supply line between a motor drive circuit of a control unit and a motor winding wire, and that the switching unit is controlled to be brought into nonconduction when a door is opened.

A centrifugal fan comprises an impeller, a motor which is connected and rotates the impeller and a housing which has an intake and an air blowing port for housing the impeller. The impeller has a plurality of blades arranged on a circumference. The intake opens opposed to the right end (in FIG. 1) of the impeller. The air blowing port opens opposed to a side of the impeller. A gap enlarged portion, in which the distance between the outer circumference of the impeller and the inner face of the ho...

A compact and efficient compressor is provided, based on using magnetic bearing technology, which can operate at high speed and comprises a reliable control system. The compressor of the present invention makes use of two separate compressors mounted on a single common motor, thus sharing a single drive. The balancing of the thrust at high RPM is improved by using a pair of electromagnetic bearings.

A centrifugal compressor has a housing assembly and an impeller rotatably connected to the housing assembly. Gas introduced into the housing assembly by rotation of the impeller is compressed at least by centrifugal force. One aspect of the present invention is that the impeller includes an inducer portion having a pressure surface and a suction surface and a hole extending between the pressure surface and the suction surface. Another aspect of the present invention is that the centrifugal compr...

It is possible to keep a diameter of an impeller and a cross sectional area of an air channel as large as possible while reducing a size of a centrifugal fan in a direction perpendicular to an axis. Thereby, it is possible to acquire characteristics of a high air volume and a high static pressure without lowering the efficiency. In the centrifugal fan, when the radial gap of the cross section in an air channel 10b is gradually enlarged from a clapper portion 10c toward an outlet 10d except for a...

A centrifugal fan is described. The centrifugal fan is suitable for a portable electrical apparatus. A tongue shape is formed from a volute sidewall of a casing of the centrifugal fan and non-parallel to a rotational axis of blades. Therefore, when the blades rotate to generate a wake flow to blow on a surface of the volute sidewall at the tongue shape, noise generated by the centrifugal fan can be decreased.