Patent application number | Description | Published |
20090257900 | Shaft coupling for scroll compressor - A coupling mechanism for a scroll compressor comprises an orbiting scroll disk, a retention bolt, a bearing shaft and a retention nut. The orbiting scroll disk includes a first face configured to engage a stationary scroll disk to compress a working fluid, and a second face having a hub. The retention bolt is inserted into the hub. The bearing shaft is fit onto the retention bolt and includes a bearing surface for engaging a drive bushing of a drive shaft. The retention nut is threaded onto the retention bolt to retain connection of the bearing shaft with the orbiting scroll disk. | 10-15-2009 |
20100287958 | REFRIGERANT COMPRESSOR - Disclosed is a compressor ( | 11-18-2010 |
20110068540 | STAGGERED SEAL ASSEMBLY - An improved staggered seal assembly uses a static element and a rotating element to create a seal. The static element surrounds the rotating element and has at least one fin. The rotating element has at least one long fin and a set of shorter fins. A third component has a staggered fin. The fins create a leakage flow path which throttles the leakage across the seal from a high pressure zone into a low pressure zone. | 03-24-2011 |
20110229351 | JOURNAL BEARING WITH DUAL PASS COOLING FOR AIR MACHINE - A compressor rotor compresses air and delivers the compressed air to a downstream inlet and across a turbine rotor. A shaft rotates with the turbine rotor and the compressor rotor. The shaft is hollow with an inner bore and an outer periphery. At least one journal bearing supports a portion of the shaft, and has an inner bore spaced from the outer periphery of the shaft. A cooling air path is provided between the shaft outer periphery and the bearing inner periphery, and along a length of the bearing to at least one connection hole. The connection hole provides cooling air from an outer periphery of the shaft to the inner bore of the shaft. In a separate feature, a shaft for use in an air supply machine includes a hollow interior, with such a connection hole. | 09-22-2011 |
20120014784 | RAM AIR FAN MOTOR COOLING - A ram air fan assembly includes a ram air fan disposed at a fan inlet and a ram air fan motor operably connected to the ram air fan. A blower is operably connected to the ram air fan and is configured to redirect a cooling flow across the ram air fan motor from a substantially axially directed flow to a substantially radially directed flow thereby increasing the cooling flow across the ram air fan motor. A method of cooling a ram air fan assembly includes urging a cooling flow toward the ram air fan motor and is directed across the ram air fan motor thus removing thermal energy from the ram air fan motor. The cooling flow proceeds across a blower operably connected to the ram air fan motor, thus directing the cooling flow substantially radially outwardly toward the fan inlet. | 01-19-2012 |
20120020776 | VARIABLE DIFFUSER ACTUATION LINKAGE FOR A CABIN AIR COMPRESSOR - A variable diffuser for a rotating machine includes a multiple of diffuser vanes mounted to a drive ring. The multiple of diffuser vanes are movable in unison between a maximum flow position and a minimum flow position in response to rotation of a crank to rotate the drive ring about a centerline through a link arm. | 01-26-2012 |
20120152383 | THRUST BEARING SHAFT FOR THRUST AND JOURNAL AIR BEARING COOLING IN AN AIR MACHINE - A thrust bearing shaft has a radially enlarged thrust disk to be mounted between two static housing surfaces in an air cycle machine. A first portion of the thrust bearing shaft extends from a first face of the thrust disk. A second portion extends from a second opposed face of the thrust disk. The second portion has sealing ribs and six holes. The sealing ribs are spaced closer to the thrust disk than are the holes. A ratio of a distance from an end of the second portion to a center of the holes compared to a distance from the end of the second portion to the second face of the thrust disk is between 0.20 and 0.22. In addition, an air cycle machine incorporating the thrust bearing shaft, and a method of assembling the thrust bearing shaft into an air cycle machine are disclosed. | 06-21-2012 |
20120156008 | AIR CYCLE MACHINE SEAL PLATE AND SEAL LAND - An air cycle machine includes turbine and compressor housings respectively having a turbine and a compressor. An insulator seal plate is fastened between the turbine and compressor housings. The insulator seal plate includes a bore. A seal has an outer diameter that engages the bore. The seal also includes an inner diameter provided between lateral sides defining a first width. The inner diameter provides a seal and configured to engage a rotating surface. The outer diameter to the inner diameter provides a first ratio of 1.30-1.31. The inner diameter to the first width provides a second ratio of 1.59-1.61. A rotor shaft is disposed in the seal and includes knife edges extending from the rotor shaft to the seal land. The rotor shaft supports the turbine and the compressor. | 06-21-2012 |
20120156009 | FAN SHIELD AND BEARING HOUSING FOR AIR CYCLE MACHINE - A fan shield for an air cycle machine includes a fan shield body in the general shape of a frustum of a cone having curved sides. The curved sides define a radius of curvature and a center point of curvature that corresponds to the radius of curvature. The center point of curvature is an axial distance from a large end of the fan shield body and a radial distance from the central axis such that a ratio of the radial distance to the axial distance is between 1.160 and 1.360. A bearing housing includes a body that defines a cylindrical portion and an annular flange at one end. The annular flange includes a first attachment opening, a second attachment opening and a third attachment opening that are non-uniformly circumferentially spaced around the flange. | 06-21-2012 |
20120156013 | AIR CYCLE MACHINE COMPOSITE INSULATOR PLATE - An air cycle machine including a housing with a compressor housing portion and a turbine housing portion secured to one another by fasteners. The compressor and turbine housing portions each provide a surface. An insulator plate is provided between and engages the surfaces. The fasteners extend through circumferentially arranged holes in the insulator plate. The insulator plate has an axial width, an inner diameter and an outer diameter. The outer diameter to the inner diameter provides a first ratio of 1.19-1.21, and the inner diameter to the width provides a second ratio of 53-59. In one example, the insulator plate is a composite structure constructed from 9-12 carbon fiber laminations with each layer having directional carbon fibers oriented transversely relative to the carbon fibers of an adjacent layer. | 06-21-2012 |
20120156028 | TURBINE NOZZLE FOR AIR CYCLE MACHINE - A turbine nozzle for an air cycle machine includes a disk section with a multiple turbine vanes which each extend for a vane height H, a throat width W defined between each of the multiple of turbine vanes, wherein a ratio W/H is 0.745-0.769. | 06-21-2012 |
20120156043 | FAN ROTOR FOR AIR CYCLE MACHINE - A fan rotor includes a rotor body that has plurality of fan blades for rotation about a central axis. An annular wall extends radially inward from the rotor body. A hub body extends axially from the annular wall and defines a central hub bore with a hub bore diameter D | 06-21-2012 |
20120156065 | BEARING COOLING CONTROL IN AN AIR CYCLE MACHINE - An air cycle machine has a housing which holds a compressor section, and a turbine section having an expansion area, and a fan section disposed outside of the housing. A shaft, which attaches to and is coaxial with the compressor section, the turbine section and the fan section, is supported by an air journal bearing and an air thrust bearing. The shaft has a hollow core for porting cooling air from the air journal bearing and the air thrust bearing, and a tube that extends into said expansion area and communicates cooling air from the turbine expansion area to the thrust bearing. | 06-21-2012 |
20130022443 | FAN MOTOR COOLING - An example fan assembly impeller moves air along a secondary flow path when driven by a motor. The motor also drives a fan rotor to move air along a primary flow path of the fan assembly. Air moving along the primary flow path moves in a first direction. Air moving along the secondary flow path moves in a second direction opposite the first direction. An example fan shroud communicates air used to cool a motor into a primary flow path of a fan assembly. The shroud communicates the air into the primary flow path so that the flow of air is at least partially aligned with air moving through the primary flow path of the fan assembly. | 01-24-2013 |
20130078090 | AIR CYCLE MACHINE SHAFT SUPPORT ASSEMBLY - An exemplary air cycle machine bearing housing includes a housing establishing a bore that receives a bearing. The bearing rotatably supports an air cycle machine shaft. The bore has an axial length and a radial diameter. A ratio of the axial length to the radial diameter is from 0.6989 to 0.7128. | 03-28-2013 |
20130101433 | TIE ROD - A tie rod for extending between a fan shroud and a shaft cap in a rotative assembly includes a first end with threads; a second end with threads; and an elongated portion between the first end and the second end. The tie rod has diameter to length ratio of about 1 to 40.810 to about 1 to 40.768. | 04-25-2013 |
20130101435 | SHAFT CAP - A shaft cap to connect between a shaft and a tie rod on a rotative assembly includes a circular portion with a central opening for connecting to the tie rod; a conical portion extending out from the circular portion at a slope; and a pilot around the outer edge of the conical portion. The pilot includes an outer lip to connect to an end of the shaft, an inner portion to connect to the inner circumference of the shaft and an undercut portion between the outer lip and the inner portion. | 04-25-2013 |
20130101436 | FAN ROTOR WITH COOLING HOLES - A disc for a fan rotor (with a pilot to connect to a rotating shaft, a hub and a plurality of blades) includes a flat circular portion connecting to the pilot at an inner edge and to the hub at an outer edge; a plurality of first circular cooling holes of a first diameter located around the inner edge of the disc; and a plurality of second circular cooling holes of a second diameter located around the outer edge of the disc, wherein the second diameter is larger than the first diameter. | 04-25-2013 |
20130213706 | TERMINAL BOX ASSEMBLY - A terminal assembly comprises a terminal box including a divider extending in a front-to-rear direction of the terminal box and dividing the terminal box into a first chamber and a second chamber, the first chamber being larger than the second chamber and a terminal block mounted in the first chamber configured to have a plurality of contacts mounted onto the terminal block. | 08-22-2013 |
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 |
20130280042 | JOURNAL BEARING WITH DUAL PASS COOLING FOR AIR MACHINE - A compressor rotor compresses air and delivers the compressed air to a downstream inlet and across a turbine rotor. A shaft rotates with the turbine rotor and the compressor rotor. The shaft is hollow with an inner bore and an outer periphery. At least one journal bearing supports a portion of the shaft, and has an inner bore spaced from the outer periphery of the shaft. A cooling air path is provided between the shaft outer periphery and the bearing inner periphery, and along a length of the bearing to at least one connection hole. The connection hole provides cooling air from an outer periphery of the shaft to the inner bore of the shaft. In a separate feature, a shaft for use in an air supply machine includes a hollow interior, with such a connection hole. | 10-24-2013 |
20130299138 | COVER FOR TERMINAL BOX IN A RAM AIR FAN ASSEMBLY - A terminal box cover for a ram air fan assembly includes a body defining a top wall having an outer surface. The body extends between a forward end and a rearward end. An opening is formed in a forward wall at the forward end. The opening allows electric supply feeders to move into an internal space defined by the cover when mounted on a terminal box base. The outer surface extends from the forward end to the rearward end such that the forward wall is thicker than a rear wall at the rearward end. The thickness is defined as a distance extending away from the top wall. A separator wall is defined extending from the inner surface. The separator wall extends from the front wall toward the rear wall, but is spaced from the rear wall. The separating wall has a curved inner lip at a rearwardmost end. In addition, a ram air fan assembly, a system including a heat exchanger, and a method of replacing a box cover are also described. | 11-14-2013 |
20140056718 | INLET SHROUD ASSEMBLY - An inlet shroud assembly includes a hub and a shroud for a ram air fan. The hub includes a center bore, a first frustoconical section, a plurality of slotted cooling holes located on the first frustoconical section, a second frustoconical section, a plurality of circular cooling holes located on the second frustoconical section, a rim, a central cavity, and an annular cavity. The shroud includes a central disk with a center bore, a circular flange located on a radially outer edge of the central disk, and an outer disk with a web portion and a tip portion, the tip portion having a curved lip. | 02-27-2014 |
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 |
20140178173 | EJECTOR ASSEMBLY - A recirculation flow collector for a fan includes an arcuate housing; a first face with a first circular opening to receive flow; a second face with a second circular opening to allow flow in a normal fan operating condition; and an outlet in a bottom of the arcuate housing to allow recirculation flow. | 06-26-2014 |
20140186161 | SEAL PLATE - A seal plate for an air cycle machine includes a substantially disk-shaped body having a first side configured to be coupled to a compressor housing of the air cycle machine and a second side configured to be coupled to a turbine housing of the air cycle machine. The seal plate also includes a timing pin slot configured to align the first side of the seal plate with the compressor housing. The seal plate further includes a plurality of fastener holes distributed radially in an asymmetric pattern. The plurality of fastener holes includes an alignment fastener hole configured to align the second side of the seal plate with the turbine housing. An angular offset between the alignment fastener hole and the timing pin slot is about 38.45 degrees. | 07-03-2014 |
20140301681 | THRUST PLATE INCLUDING COOLING SLOTS - A thrust plate includes an annular-shaped body having a scalloped outer edge that forms a first circumference defined by a first diameter. The thrust plate further includes a plurality of cooling slots formed in a first surface of the body. The cooling slots are formed between each pair of adjacent scallops. A center of each cooling slot extends towards the center of the thrust plate at a common predetermined angle with respect to one another. | 10-09-2014 |
20140321979 | TURBINE NOZZLE PIECE PARTS WITH HVOC COATINGS - A nozzle for an air cycle machine. The nozzle has a disk section having a central axis. The nozzle also includes a plurality of blades which extend a blade height H from a bladed face of the disk section. The plurality of blades are arranged radially about the disk section. The nozzle has a throat width W defined between each radially adjacent pair of the plurality of turbine blades. The nozzle includes a coating substantially encapsulating the disk section and the plurality of blades, wherein the coating contains more than 91 percent tungsten carbide by volume. | 10-30-2014 |
20140321995 | RAM AIR FAN INLET SHROUD - A ram air fan inlet shroud for a ram air fan assembly is provided. The ram air fan inlet shroud includes a shroud portion extending outwardly from a conical portion. The conical portion provides a transition between a central portion and an inner ram air fan hub interface portion. The conical portion includes a plurality of inner cooling slots having a slot arc length and spaced apart by a slot spacing angle. A ratio of the slot spacing angle to the slot arc length is between about 1.24 and 1.4. The ram air fan inlet shroud also includes a recessed portion located between the inner ram air fan hub interface portion and an outer ram air fan hub interface portion. The recessed portion includes a plurality of outer cooling holes. | 10-30-2014 |
20150034203 | BEARING COOLING CONTROL IN AN AIR CYCLE MACHINE - An air cycle machine has a housing which holds a compressor section, and a turbine section having an expansion area, and a fan section disposed outside of the housing. A shaft, which attaches to and is coaxial with the compressor section, the turbine section and the fan section, is supported by an air journal bearing and an air thrust bearing. The shaft has a hollow core for porting cooling air from the air journal bearing and the air thrust bearing, and a tube that extends into said expansion area and communicates cooling air from the turbine expansion area to the thrust bearing. | 02-05-2015 |
20150037155 | FAN ROTOR PILOTING - A fan rotor has a plurality of blades arranged circumferentially about a central axis, wherein the plurality of blades extend between 2.9980 and 3.0020 inches radially from the central axis. The fan rotor has a root portion arranged radially inward from the plurality of blades. The fan rotor also has a web portion that connects the plurality of blades to the root portion, the web portion having a minimum longitudinal thickness between 0.2000 and 0.2100 inches. | 02-05-2015 |