Patent application number | Description | Published |
20080240907 | EXPANSION TURBINE HAVING A VARIABLE NOZZLE MECHANISM - Expansion turbine having a variable nozzle mechanism comprises an adiabatic expansion device located in a vacuum container having a turbine impeller threrein which rotates and drives the turbine impeller during adiabatic expansion of very low temperature gas, and varies the throat area of very low temperature gas introduced in the turbine impeller by driving a nozzle member disposed near the outside end of the adiabatic expansion device by a drive force from a driving member located outside the vacuum container; wherein the driving member comprises a cylindrical member disposed coaxially with the turbine impeller, and the nozzle member is provided on the extension of the body of the cylindrical member in the axial direction. | 10-02-2008 |
20080240908 | EXPANSION TURBINE HAVING A VARIABLE NOZZLE MECHANISM - Expansion turbine having a variable nozzle mechanism comprises an adiabatic expansion device located in a vacuum container having a turbine impeller therein which rotates and drives the turbine impeller during adiabatic expansion of very low temperature gas, and varies the throat area of very low temperature gas introduced in the turbine impeller by driving a nozzle member disposed near the outside end of the adiabatic expansion device by a drive force from a driving member located outside the vacuum container; a plate member provided detachably in contact with the outside end of the body of the adiabatic expansion device, wherein the support side of the nozzle member is connected to and supported by the plate member, and the drive side of the nozzle member is connected to and supported by the driving member. | 10-02-2008 |
20080240911 | HEAT INSULATING STRUCTURE FOR EXPANSION TURBINE, AND METHOD OF MANUFACTURING THE SAME - A heat insulating structure for an expansion turbine includes an adiabatic expansion device including an expander body that includes an outlet passage for refrigerant fluid at a central portion thereof and an introduction chamber for refrigerant fluid communicating with an inlet of the outlet passage on an outer peripheral portion thereof, and a turbine impeller that is rotatably provided at the inlet and braked by a braking device. The adiabatic expansion device adiabatically expands refrigerant fluid by rotating the turbine impeller with refrigerant fluid that flows from the introduction chamber to the outlet passage side. A heat-insulating layer, which surrounds the entire periphery of the outlet passage over the entire length of the introduction chamber, is formed between the introduction chamber and the outlet passage. Accordingly, it is possible to improve turbine efficiency by reducing transfer of heat of refrigerant fluid from the introduction chamber to the outlet passage. | 10-02-2008 |
20090028693 | EXPANSION TURBINE - A braking mechanism is provided that is suitable for an expansion turbine that rotates at high speed. Upper end salient poles | 01-29-2009 |
20100275616 | CRYOGENIC REFRIGERATOR AND CONTROL METHOD THEREFOR - A cryogenic refrigerator ( | 11-04-2010 |
20140119890 | TURBO-COMPRESSOR - A turbo-compressor | 05-01-2014 |
20140127050 | ELECTRICAL MOTOR AND TURBO COMPRESSOR - An electrical motor includes a motor case, a rotor that is housed in the motor case and rotatable about a rotor shaft, a stator that is provided around the rotor in the motor case and configured by winding a stator coil around a stator core, and a first spray nozzle that is provided in the motor case for spraying liquid coolant toward an inner circumferential surface of the motor case. The stator coil has a first coil end protruded from the stator core along a direction of the rotor shaft. The first spray nozzle is configured to spread the coolant as mist by splashing the coolant on the inner circumferential surface to make the spread mist over the first coil end. The first coil end can be cooled sufficiently by vaporization heats of the mist coolant that is fallen over it. | 05-08-2014 |
20150128627 | LIQUID LEVEL INDICATOR, TURBO COMPRESSOR, AND TURBO REFRIGERATOR - A liquid level indicator including a liquid level calm portion that is provided with a liquid introduction inlet that communicates with a portion below the liquid level in an oil tank and a gas vent that communicates with a portion above the liquid level; and a sight glass for observing a liquid level in the liquid level calm portion, having a liquid introduction tube provided with an extension portion that communicates with the liquid introduction inlet and extends toward the bottom portion of the oil tank, and a distal end portion that communicates with the extension portion and opens in a direction other than the downward direction below the liquid level. | 05-14-2015 |