Patent application number | Description | Published |
20080218008 | Rotor and Stator Assemblies that Utilize Magnetic Bearings for Use in Corrosive Environments - Rotor and stator assemblies that utilize magnetic bearings for supporting the rotor shall during operation can be suitably used in corrosive environments, such as sour gas. The rotor and stator assemblies include NACE compliant magnetic bearing arrangements for sour gas applications. One embodiment includes the use of barrier layers disposed on selected exposed surfaces of the rotor shaft assembly and/or stator assembly. Also disclosed are processes for forming encapsulated stators that exhibit improved corrosion resistance, as well as corrosion resistant materials for backup bearing races and landing sleeves. | 09-11-2008 |
20080219834 | Rotor Shaft Assembly for Magnetic Bearings for Use in Corrosive Environments - Rotor and stator assemblies that utilize magnetic bearings for supporting the rotor shaft during operation can be suitably used in corrosive environments, such as sour gas. The rotor and stator assemblies include NACE compliant magnetic bearing arrangements for sour gas applications. In one embodiment, a rotor shaft assembly for a magnetic bearing arrangement comprises a rotor shaft formed of a ferromagnetic material comprising a plurality of rotor laminations disposed on the rotor shaft; and a barrier layer formed on selected exposed surfaces of the rotor shaft, wherein the barrier layer is effective to resist corrosion relative to the surface without the barrier layer. | 09-11-2008 |
20090113999 | Method for Testing a Rotor and Stator Assembly - Test methods for testing rotor and stator assemblies that utilize magnetic bearings prior to installation. The test method generally includes operating the rotor and stator assembly prior to installation in a test atmosphere at a pressure greater than 2 bar. The test atmosphere can be formed of air, an inert gas, or an expanded cryogenic gas. | 05-07-2009 |
20100090549 | THERMAL MANAGEMENT IN A FAULT TOLERANT PERMANENT MAGNET MACHINE - A PM machine is provided. The PM machine includes a stator including a stator core, wherein the stator core defines multiple step-shaped stator slots. The stator includes multiple fractional-slot concentrated windings wound within the step-shaped stator slots. The stator also includes at least one cooling tube disposed around the windings. The stator further includes a first insulation layer disposed around the cooling tube. The stator also includes a second insulation layer disposed around the first insulation layer. The stator further includes at least one slot wedge configured to close an opening of a respective one of the step-shaped stator slots, wherein the slot wedge is further configured to adjust a leakage inductance in the PM machine. The PM machine also includes a rotor having a rotor core and disposed outside and concentric with the stator, wherein the rotor core includes a laminated back iron structure disposed around multiple magnets. | 04-15-2010 |
20100090557 | FAULT TOLERANT PERMANENT MAGNET MACHINE - A PM machine is provided. The PM machine includes a stator including a stator core, wherein the stator core defines multiple step-shaped stator slots. The stator includes multiple fractional-slot concentrated windings wound within the step-shaped stator slots. The stator also includes at least one slot wedge configured to close an opening of a respective one of the step-shaped stator slots, wherein the slot wedge is further configured to adjust the leakage inductance in the PM machine. The PM machine also includes a rotor having a rotor core and disposed outside and concentric with the stator, wherein the rotor core includes a laminated back iron structure disposed around multiple axially-segmented magnets. | 04-15-2010 |
20100175857 | MILLICHANNEL HEAT SINK, AND STACK AND APPARATUS USING THE SAME - A cooling device comprises an upper surface configured to contact the baseplate, an inlet manifold configured to receive a coolant, an outlet manifold configured to exhaust the coolant, and at least one set of millichannels in the upper surface. The at least one set of the millichannels defines at least one heat sink region with at least one groove about one or more millichannels in the respective heat sink region with the groove configured to receive a seal. The at least one heat sink region establishes direct contact of the coolant with the baseplate, and the millichannels are configured to receive the coolant from the inlet manifold and to deliver the coolant to the outlet manifold. An apparatus and a stack are also presented. | 07-15-2010 |
20100237723 | SYSTEM AND METHOD FOR THERMAL MANAGEMENT IN ELECTRICAL MACHINES - A cooling system for an electrical machine is provided. The cooling system includes at least one baffle enclosing multiple endwindings, wherein the at least one baffle is configured to guide a cooling fluid flow to multiple regions of interest in the machine. | 09-23-2010 |
20100271775 | SYSTEMS AND METHODS FOR SYNTHETIC JET ENHANCED NATURAL COOLING - A method and system for increasing cooling of an enclosure is provided. The component enclosure includes one or more sidewalls defining a volume, the sidewalls are configured to substantially surround a heat generating component positioned within the volume. The component enclosure further includes a synthetic jet assembly positioned adjacent at least one of the sidewalls. The synthetic jet assembly includes at least one synthetic jet ejector having a jet port. The jet port is aligned at least one of perpendicularly, parallelly, and obliquely with a surface of the at least one sidewall. The synthetic jet assembly is configured to direct a jet of fluid through the port at least one of substantially parallel to the surface, perpendicularly onto the surface, and obliquely toward the surface. | 10-28-2010 |
20100289386 | COOLING SYSTEM FOR ROTATING MACHINE - An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions. | 11-18-2010 |
20110114287 | CHASSIS WITH DISTRIBUTED JET COOLING - A chassis with distributed jet cooling is provided. The chassis includes one or more sidewalls defining a volume configured to substantially surround one or more heat generating components positioned within the volume. The chassis further includes at least one array of fins thermally coupled to a respective one of the one or more sidewalls and at least one synthetic jet assembly comprising a multi-orifice synthetic jet or a number of single orifice synthetic jets disposed on a side of a respective one of the array(s) of fins. The chassis further includes at least one attachment means for attaching a respective one of the at least one synthetic jet assemblies to a respective one of the one or more sidewalls. | 05-19-2011 |
20110126563 | ABSORPTION CHILLER AND SYSTEM INCORPORATING THE SAME - A device, such as an absorption chiller sub-system, is provided. The absorption chiller sub-system can include an evaporator and an absorber. The evaporator can be configured to receive a liquid first working fluid and to produce first working fluid vapor. The absorber can be configured to receive and combine first working fluid vapor and a second working fluid, for example, so as to release thermal energy. A divider having opposing first and second sides in respective fluid communication with the evaporator and the absorber can also be included. The divider can be configured to allow first working fluid vapor to pass therethrough between the first and second sides and to inhibit movement of liquid first working fluid therethrough between the first and second sides. Associated systems and methods are also provided. | 06-02-2011 |
20110139429 | SHAPED HEAT SINKS TO OPTIMIZE FLOW - A heat sink with shape-optimized fins provides for improved heat transfer. Synthetic jets create vortices which enhance heat transfer and cooling of downstream fins, while the shape of the fins limits pressure drop in the flow over the cooling fins. | 06-16-2011 |
20110140552 | COOLING STRUCTURE FOR A SEGMENTED STATOR ASSEMBLY - A stator assembly includes a segmented stator having stator portions. Each stator portion includes stator laminations having stator windings, spacer plates having a portion embedded within the stator laminations, and structural plates having a portion embedded within the stator laminations. The portion of each of the spacer plates and each of the structural plates has notch-like structures that create openings to allow a cooling medium to flow between the notch-like structures to provide radial cooling of the stator windings. Connectors are provided to connect the stator portions of the segmented stator together. | 06-16-2011 |
20110221288 | SYSTEM AND METHOD FOR COOLING IN ELECTRIC MACHINES - A segmented cooling system for an electric machine is provided. The segmented cooling system includes multiple cooling subsystems coupled to respective multiple stator segments in the electric machine, wherein the multiple cooling subsystems directs fluid flow towards one or more regions of interest within the respective multiple stator segments. | 09-15-2011 |
20120025638 | APPARATUS FOR COOLING AN ELECTRIC MACHINE - Provided is an apparatus, for example, for use with a rotating electric machine, that includes a housing. The housing can include a housing main portion and a housing end portion. The housing main portion can be configured to be disposed proximal to a body portion of a stator section of an electric machine. The housing main portion can define a main fluid channel that is configured to conduct fluid therethrough. The housing end portion can receive fluid from said main fluid channel and direct fluid into contact with a winding end portion of a conductive winding of the stator section. | 02-02-2012 |
20120097377 | THERMAL MANAGEMENT SYSTEM AND METHOD - A thermal management system is provided. The thermal management system includes at least one heat sink including one or more respective fins, wherein the one or more fins include one or more respective cavities. The thermal management system also includes a synthetic jet stack including at least one synthetic jet mounted within each of the respective cavities employing at least one engaging structure to provide a rigid positioning of the synthetic jet stack within the fins, wherein the synthetic jet includes at least one orifice through which a fluid is ejected. | 04-26-2012 |
20120240605 | THERMAL ENERGY MANAGEMENT SYSTEM AND METHOD - A system, such as a thermal energy management system, is provided. The system can include an absorption module and an evaporation module. The absorption module can include at least two absorption chambers, each absorption chamber being configured to receive liquid absorbent. The evaporation module can be in independent selective fluid communication with each of the absorption chambers, and can be configured to receive and cause therein evaporation of a refrigerant. | 09-27-2012 |
20120327603 | COOLING DEVICE FOR A POWER MODULE, AND A RELATED METHOD THEREOF - A cooling device for a power module having an electronic module disposed on a base plate via a substrate is disclosed. The cooling device includes a heat sink plate having at least one cooling segment. The cooling segment includes an inlet plenum for entry of a cooling medium, a plurality of inlet manifold channels, a plurality of outlet manifold channels, and an outlet plenum. The plurality of inlet manifold channels are coupled orthogonally to the inlet plenum for receiving the cooling medium from the inlet plenum. The plurality of outlet manifold channels are disposed parallel to the inlet manifold channels. The outlet plenum is coupled orthogonally to the plurality of outlet manifold channels for exhaust of the cooling medium. A plurality of millichannels are disposed in the base plate orthogonally to the inlet and the outlet manifold channels. The plurality of milli channels direct the cooling medium from the plurality of inlet manifold channels to the plurality of outlet manifold channels. | 12-27-2012 |
20130002064 | ELECTRICAL MACHINE - An apparatus, such as an electrical machine, is provided. The apparatus can include a rotor defining a rotor bore and a conduit disposed in and extending axially along the rotor bore. The conduit can have an annular conduit body defining a plurality of orifices disposed axially along the conduit and extending through the conduit body. The rotor can have an inner wall that at least partially defines the rotor bore. The orifices can extend through the conduit body along respective orifice directions, and the rotor and conduit can be configured to provide a line of sight along the orifice direction from the respective orifices to the inner wall. | 01-03-2013 |
20130312440 | ABSORPTION CHILLERS - An absorption chiller system is provided. The system includes an evaporator, an absorber, a divider, a recirculating loop, and a primary heater. The evaporator includes a first working fluid inlet and a first working fluid outlet. The absorber includes a second working fluid inlet and a second working fluid outlet. The divider has opposing first and second sides, wherein the first side is in fluid communication with the evaporator and the second side is in fluid communication with the absorber. The recirculating loop connects the first working fluid outlet back to the evaporator, and the primary heater is disposed in thermal communication with the recirculating loop. | 11-28-2013 |
20130315755 | TEMPERATURE CONTROL SYSTEM FOR A MACHINE AND METHODS OF OPERATING SAME - A temperature control system for an electrical machine and a method of operating the system is provided. The machine includes a housing enclosing a motor and a compressor, the housing includes a suction pipeline in flow communication with the compressor. The suction pipeline is configured to channel fluid into the housing. A temperature control system assembly includes a fluid mover coupled to at least one of the rotor shaft and the compressor shaft and in flow communication with the suction pipeline upstream from the compressor. The fluid mover is configured to channel the fluid from the suction pipeline and across at least one of the motor and the compressor. Temperature control system includes a distribution header coupled to the housing and in flow communication with the fluid mover, the distribution header includes a first outlet coupled in flow communication to the motor to channel the fluid across the motor. | 11-28-2013 |
20140174083 | CRYOGENIC FUEL SYSTEM WITH AUXILIARY POWER PROVIDED BY BOIL-OFF GAS - A system in one embodiment includes a detection unit, a boil-off auxiliary power unit, and a controller. The detection unit is configured to detect a characteristic of a boil-off gas stream from a cryotank configured to hold a cryogenic fluid. The boil-off auxiliary power unit is configured to receive the boil-off gas stream and use the boil-off gas stream to provide auxiliary power to a vehicle system. The controller is configured to acquire information from the detection unit corresponding to the characteristic; determine, using the information acquired from the detection unit, an available boil-off auxiliary energy that is available from the boil-off auxiliary power unit; determine a mode of operation of the vehicle system; determine a required auxiliary energy for the vehicle system; and to operate the auxiliary power unit based on the available boil-off auxiliary energy, the mode of operation, and the required auxiliary energy. | 06-26-2014 |
20140174103 | SYSTEMS AND METHODS FOR OXIDATION OF BOIL-OFF GAS - A system in one embodiment includes a mixing module, an oxidation module, and a heat exchanger. The mixing module is configured to receive and mix a boil-off gas stream from a cryotank. The oxidation module is configured to receive the mixed stream, and to oxidize the boil-off gas in the mixed stream to produce an exhaust stream. The heat exchanger is configured to exchange heat between streams passing through a first passage configured to receive at least a portion of the exhaust stream, and a second passage configured to receive a fluid including the boil-off gas. The heat exchanger is configured to heat the fluid including the boil-off gas and cool the at least a portion of the exhaust stream. The fluid including the boil-off gas is heated by the heat exchanger upstream of the oxidation module. | 06-26-2014 |
20140174105 | SYSTEMS AND METHODS FOR RE-CONDENSATION OF BOIL-OFF GAS - A system in one embodiment includes a heat exchanger, a detection unit, and a controller. The heat exchanger includes a first passage and a second passage configured for exchange of heat therebetween. The first passage is configured to receive a boil-off gas stream of a first cryogenic fluid. The second passage is configured to receive a liquid stream of a second cryogenic fluid. The detection unit is configured to detect a characteristic of the boil-off gas stream. The controller is configured to, responsive to information acquired from the detection unit corresponding to the characteristic, control the flow of the second cryogenic fluid to provide sufficient exchange of heat from the boil-off gas stream via the heat exchanger to condense at least a portion of the boil-off gas stream. A liquid stream of the first cryogenic fluid is output from the first passage and returned to a first tank. | 06-26-2014 |
20140208769 | INTEGRATED INDUCER HEAT EXCHANGER FOR GAS TURBINES - An integrated inducer heat exchanger is provided. The integrated inducer heat exchanger includes multiple airfoil devices disposed in an annular array within an inner circular casing and an outer circular casing forming multiple passages for allowing a flow of fluid from a forward side to an aft side of the integrated inducer heat exchanger. The integrated inducer heat exchanger also includes multiple annular manifolds arranged about the outer circular casing configured for supplying a flow of coolant at low temperature from one or more coolant sources and returning the flow of coolant at high temperature to the one or more coolant sources via an external heat exchanger for dissipating heat and multiple transfer tubes connecting the multiple annular manifolds with the multiple airfoil devices for transferring the flow of coolant within the airfoil devices for exchanging heat between the coolant and the fluid passing through the multiple passages. | 07-31-2014 |
20140318740 | CHASSIS WITH DISTRIBUTED JET COOLING - A chassis with distributed jet cooling is provided. The chassis includes one or more sidewalls defining a volume configured to substantially surround one or more heat generating components positioned within the volume. The chassis further includes at least one array of fins thermally coupled to a respective one of the one or more sidewalls and at least one synthetic jet assembly comprising a multi-orifice synthetic jet or a number of single orifice synthetic jets disposed on a side of a respective one of the array(s) of fins. The chassis further includes at least one attachment means for attaching a respective one of the at least one synthetic jet assemblies to a respective one of the one or more sidewalls. | 10-30-2014 |
20140318755 | SHAPED HEAT SINKS TO OPTIMIZE FLOW - A heat sink with shape-optimized fins provides for improved heat transfer. Synthetic jets create vortices which enhance heat transfer and cooling of downstream fins, while the shape of the fins limits pressure drop in the flow over the cooling fins. | 10-30-2014 |
20140338861 | CHASSIS WITH DISTRIBUTED JET COOLING - A chassis with distributed jet cooling is provided. The chassis includes one or more sidewalls defining a volume configured to substantially surround one or more heat generating components positioned within the volume. The chassis further includes at least one array of fins thermally coupled to a respective one of the one or more sidewalls and at least one synthetic jet assembly comprising a multi-orifice synthetic jet or a number of single orifice synthetic jets disposed on a side of a respective one of the array(s) of fins. The chassis further includes at least one attachment means for attaching a respective one of the at least one synthetic jet assemblies to a respective one of the one or more sidewalls. | 11-20-2014 |
20140338862 | CHASSIS WITH DISTRIBUTED JET COOLING - A chassis with distributed jet cooling is provided. The chassis includes one or more sidewalls defining a volume configured to substantially surround one or more heat generating components positioned within the volume. The chassis further includes at least one array of fins thermally coupled to a respective one of the one or more sidewalls and at least one synthetic jet assembly comprising a multi-orifice synthetic jet or a number of single orifice synthetic jets disposed on a side of a respective one of the array(s) of fins. The chassis further includes at least one attachment means for attaching a respective one of the at least one synthetic jet assemblies to a respective one of the one or more sidewalls. | 11-20-2014 |
20150033729 | FLOW CONTROL ASSEMBLY AND METHODS OF ASSEMBLING THE SAME - A flow control assembly for controlling cooling flow of a turbine engine is provided. The flow control assembly includes a first flow control device having a first sidewall and a second sidewall. The first sidewall is coupled to a compressor vane and is configured to define a first flow path from a compressor to a turbine vane. The second sidewall is coupled to a compressor vane and is configured to define a second flow path from the compressor to a turbine blade. A second flow control device is coupled to the compressor and includes an orifice device coupled to the compressor vane and a meter device coupled to the orifice, wherein the orifice is configured to direct a cooling flow to the meter device. A controller is configured to control the meter device to facilitate regulating the cooling flow into at least one of the first flow path and the second flow path. | 02-05-2015 |
20150033761 | HEAT TRANSFER ASSEMBLY AND METHODS OF ASSEMBLING THE SAME - A heat transfer assembly for controlling heat transfer of a turbine engine is provided. The turbine engine includes a housing and includes a compressor, a combustor and a turbine located within the housing. The heat transfer assembly includes a flow control device having a sidewall coupled to the turbine, the sidewall is in flow communication with a compressor vane. The sidewall is configured to define a first flow path from the compressor vane to a turbine vane and a second flow path from the compressor vane to a turbine blade. A heat exchanger is coupled to the housing and located between the compressor and the turbine, wherein the heat exchanger is in flow communication with at least one of the first flow path and the second flow path. A fluid supply device is coupled to the housing and in flow communication with the heat exchanger. | 02-05-2015 |
20150041104 | SYSTEMS AND METHODS FOR ROBUST AND MODULAR SYNTHETIC JET COOLING - A modular synthetic cooling jet apparatus for cooling at least one electronic component and including a first synthetic cooling jet is provided. The first synthetic cooling jet includes a first piezoelectric element, and a first pair of plates coupled to the first piezoelectric element. The first pair of plates includes a first top plate and a first bottom plate. The first synthetic cooling jet also includes a first air gap defined between the first top plate and the first bottom plate. The first flex circuit is coupled to the first piezoelectric element. The first flex circuit is configured to be coupled to an electrical power source and to transmit a first electrical signal to the first piezoelectric element. The first piezoelectric element is configured to actuate at least one of the first top plate and the first bottom plate to induce a first expelling air stream. | 02-12-2015 |
20150083367 | AVIATION BYPASS VALVE INCLUDING A SHAPE MEMORY ALLOY MATERIAL - An aviation bypass valve for use in a heat exchanger apparatus, including a shape memory alloy material. The heat exchanger apparatus further including an air-cooled oil cooler disposed in a bypass fan duct of an aircraft engine. The heat exchanger apparatus including a bypass valve in fluid communication with the air cooled oil cooler. The bypass valve including a valve body, a piston disposed in the valve body and moveable therein and an actuation component. The actuation component including a shape memory alloy. The actuation component responsive to a change in at least one of a thermal condition and a pressure exerted thereon so as to move the piston, thereby opening and closing the bypass valve. | 03-26-2015 |