Patent application number | Description | Published |
20080309175 | ELECTRIC MOTOR COOLING - An electric motor cooling system is provided that includes a housing and first and second cooling sources that are different from one another respectively to provide first and second cooling flows. A stator is mounted in the housing and receives the first cooling flow. A rotor is rotatable relative to the stator and receives the second cooling flow. In the examples, the housing supports a journal bearing upon which the rotor is supported, and the second cooling flows through the journal bearing. The first cooling flow is provided by a low pressure source such as ram air, and the second cooling flow is provided by high pressure source such as bleed air, for example. A circumferential gap is provided between the rotor and stator. In one example, a seal is arranged between the housing and a stator for providing a cavity in fluid communication with the journal bearing and the gap. The cooling flow from the journal bearing passes through the cavity and into the gap for cooling the rotor. In another example, the rotor includes circumferentially spaced magnets providing spaces. The spaces are arranged interiorly of an exterior surface of the rotor. A passage is in communication with the spaces and journal bearing. The second cooling flow from the journal bearing passes through the passage and into the spaces for cooling the rotor. | 12-18-2008 |
20100072837 | MOTOR COOLING SYSTEM - A vehicle motor system includes a motor that receives cooling fluid flow from two different cooling sources. A control, such as a valve, selectively changes the cooling flow between the two cooling sources in response to an operational state of the vehicle. | 03-25-2010 |
20100287958 | REFRIGERANT COMPRESSOR - Disclosed is a compressor ( | 11-18-2010 |
20120107101 | DRIVE RING BEARING FOR COMPRESSOR DIFFUSER ASSEMBLY - A drive ring bearing has a body with a generally cylindrical outer peripheral surface, and a generally u-shaped cross-section, with over a circumferential portion of the body. A web defines the outer peripheral surface. Radially inwardly extending legs define the u-shape in combination with the web. A plurality of circumferentially spaced feet extend from the outer peripheral surface of the body to an inner peripheral surface of the body. In addition, a diffuser assembly incorporating the drive ring bearing, a compressor assembly including the diffuser assembly, and a method of mounting the drive ring bearing are also disclosed. | 05-03-2012 |
20120112578 | HEAT TRANSFER ASSEMBLY FOR ELECTRIC MOTOR ROTOR - A motor driven assembly comprises a motor shaft, a rotor, a passage, and a corrugated fin heat transfer structure. The motor shaft is mounted for rotation about a rotational axis. The rotor is located radially about the shaft. The passage extends through the rotor alongside the motor shaft. The corrugated fin heat transfer structure is disposed within the passage radially aligned with the rotor. | 05-10-2012 |
20120114504 | VERTICAL SHAFT PUMPING SYSTEM - A vertical shaft pumping system includes a hollow shaft with an inner bore, an inlet end and an outlet end, the outlet end with at least one liquid distribution hole. It further includes an impeller positioned at the lower inlet end of the shaft, with a cylindrical base portion with a lower end, a central hole for drawing fluid into the shaft, and a plurality of teeth extending upwards from the cylindrical base portion and extending radially from the central hole to the outer cylindrical circumference for increasing tractive force of liquid in the shaft when the impeller and shaft are rotating; and a motor for rotating the shaft with the impeller to centrifugally pump a liquid vertically in the shaft from the lower inlet end to the upper outlet end. | 05-10-2012 |
20130274022 | AIR BEARING SHAFT FOR RAM AIR FAN - An air bearing for a ram air fan includes a shaft having a first end portion that defines a cap end, a second end portion that defines a thrust shaft receiving end, and an intermediate portion extending between the first and second end portions. The cap end includes a cap pilot bore and the thrust shaft receiving end includes a thrust shaft pilot section. The thrust shaft pilot section has an outer diameter of between about 1.6032-inches (about 40.7212 mm) and about 1.6002-inches (about 40.6450 mm). | 10-17-2013 |
20140169944 | Debris Filter for Motor Cooling Inlet on Ram Air Fan - A ram air fan has a fan impeller and a motor. The impeller and motor are mounted within a housing. An inlet header delivers air to an inlet for the fan. An air supply system delivers air from an internal cavity of the inlet header to the motor and air bearings. The air supply system includes a conduit extending through the housing. A connection from the conduit extends from a J-shaped tube mounted within the inlet header. The J-shaped tube extends to a remote end, with a perforated member positioned on the remote end. | 06-19-2014 |
20140284038 | HEAT EXCHANGER DESIGN AND FABRICATION - A method of forming a heat exchanger for use with a rotating component configured to rotate about an axis of rotation is provided including generating a stereolithography file of the surface geometry of the heat exchanger. The surface geometry of the heat exchanger includes a cylindrical base having a plurality of fins extending generally radially therefrom. The surface geometry defined in the stereolithography file is ‘sliced’ into a plurality of axisymmetric layers, perpendicular to the axis of rotation. Energy from an energy source is applied to a powdered material causing the powdered material to fuse and form the plurality of axisymmetric thin layers. Each of the axisymmetric thin layers is integrally formed with an adjacent axisymmetric thin layer to create a unitary heat exchanger. | 09-25-2014 |