A system is provided. The system includes a first medium at a first pressure, a second medium at a second pressure, and a medium conditioning sub-system. The medium conditioning sub-system includes a compressor, a first heat exchanger, a second heat exchanger, and a turbine. The turbine receives the first medium and the second medium.

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 two-piece integral impeller shroud with a fixed inner member and a variable outer member. An actuator is coupled to an aft end of the variable outer member and imparts axially forward and aft motion on the aft end, causing deflection of the outer member.

A dynamically controlled cooling device for targeted cooling of a moving or stationary user includes a fan, which is rotationally mounted to a base, and a targeting device, which is in possession of the user. A first actuator is attached to the base and is operationally engaged to the fan to selectively rotate the fan. A control module is operationally engaged to the first actuator and the fan. The control module comprises a first receiver, which is Global Positioning System (GPS) enabled, and a second receiver. The targeting device comprises a third receiver, which is GPS enabled, and a transmitter. The first receiver and the third receiver receive coordinates of the fan and the user, respectively. The transmitter relays the coordinates of the user to the control module, whereupon the control module to actuates the fan and the first actuator to direct a stream of air onto the user.

Blowers with variable nozzles are provided. A blower includes a fan, and a main body housing the fan, the main body defining an airflow path extending between an inlet end and an outlet end. A blower further includes a variable nozzle disposed at the outlet end. The variable nozzle includes an attachment collar, the attachment collar comprising a body defining an exterior surface and an interior surface and extending along a longitudinal axis. The variable nozzle further includes a plurality of air control bodies, each of the plurality of air control bodies movably connected to the attachment collar and comprising an air control surface and an extension rod. The variable nozzle further includes an adjustment collar, the adjustment collar disposed around the attachment collar and defining a plurality of adjustment channels, wherein each of the plurality of extension rods is disposed in one of the plurality of adjustment channels.

A noise reduction method of a ventilator, comprising the following steps: S1 starting a ventilator and imputing a required wind pressure d at a man-machine interface, and then sending a signal to an actuator through a processor, and adjusting a first blade automatically to a maximum adjustable angle state a′° through the actuator and a second blade to a minimum adjustable angle state b°; S2 regulating a revolution speed, when a wind pressure is d, feeding back a revolution speed c, a conducting noise e.sub.1 and a radiated noise f.sub.1 to the processor through an acquisition device, and after the processor receives a revolution speed information, sending a command to lock the revolution speed to the actuator through the processor. The present disclosure can effectively solve the poor noise reduction function of the present noise reduction hoop, and can effectively reduce the cost and simplify the installation process.

The disclosure relates to a compressor for an exhaust gas turbocharger. The compressor includes a compressor wheel, a compressor housing having a volute and a diffuser, and a device for modifying the diffuser width. The device for modifying the diffuser is configured to automatically alter the diffuser width as a function of one or more current operating parameters of the compressor.

A compressor system includes a compressor that includes an impeller configured to compress a working fluid by rotation. The compressor includes a housing in which an inflow flow path and a discharge flow path are formed, a guide vane that is provided in the inflow flow path and has an angle that is changeable, a diffuser vane that is provided in the discharge flow path and has an angle that is changeable, and a control unit configured to control angles of the guide vane and the diffuser vane. The control unit controls an angle of at least one of the guide vane and the diffuser vane based on a requested PQ characteristic value and a rotational speed of the impeller.

A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. The inlet-adjustment mechanism includes a plurality of blades disposed about the air inlet and each pivotable about one end of the blade, the blades extending through a slot in the air inlet wall when the blades are in the closed position so as to form an orifice of reduced diameter relative to a nominal diameter of the inlet. Movement of the inlet-adjustment mechanism from the open position to the closed position is effective to shift the compressor's surge line to lower flow rates.

It is provided with: a variable nozzle mechanism for regulating a flow of exhaust gas to a turbine rotor; a link mechanism for converting reciprocal displacement from an actuator that operates a variable nozzle mechanism into rotational displacement and transmitting the rotational displacement to an inner section of a bearing housing; and an engaging part for engaging an output section of the link mechanism and an input section of the variable nozzle mechanism, and the engaging part is constituted by a pin and a pin insertion slot where the pin is inserted, and a smooth surface is formed around an insertion position of the pin so as to guide a tip of the pin to the insertion position.

An object is to provide a variable-geometry exhaust turbocharger including a variable nozzle mechanism in which nozzle supports may not deform under a high-temperature condition. A variable-geometry exhaust turbocharger (1) includes: a nozzle mount (2); a nozzle support (6) having a first end coupled to a first face (2a) of the nozzle mount; a nozzle plate (4) coupled to the second end of the nozzle support and supported to be separated from the first face (2aa) of the nozzle mount, the nozzle plate having a first face (4a) coupled to the nozzle support and a second face (4b) which is opposite to the first face and which faces an exhaust gas channel (20) through which exhaust gas flows: a plurality of nozzle vanes (8) rotatably supported between the nozzle mount and the nozzle plate; and a variable nozzle mechanism (10) configured to change vane angles of the nozzle vanes to control a flow of the exhaust gas flowing between the nozzle mount and the nozzle plate. The nozzle plate is formed of a material having a smaller linear expansion coefficient than that of a material forming the nozzle mount.