Cooling Motor And/or Compressor By Refrigerant Patents (Class 62/505)
  • Patent number: 11961662
    Abstract: A method of manufacturing a lead assembly of a cryogenic system is provided. The method includes developing a three-dimensional (3D) model of a heat exchanger. The heat exchanger includes a plurality of channels extending longitudinally through the heat exchanger from the first end to the second end, the plurality of channels forming a plurality of thermal surfaces within the heat exchanger, the heat exchanger having a transverse cross section. The method further includes modifying the 3D model by at least one of reducing an area of the cross section and increasing the plurality of thermal surfaces. The method also includes additively manufacturing the heat exchanger using an electrically-conductive and thermally-conductive material according to the modified 3D model. Further, the method includes providing a high temperature superconductor (HTS) assembly that includes an HTS strip, and connecting the HTS assembly to the heat exchanger at the second end of the heat exchanger.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: April 16, 2024
    Assignee: GE Precision Healthcare LLC
    Inventors: Jiayin Ling, Longzhi Jiang, Liyang Ye, Stuart Paul Feltham, Thomas Edward Moran, Ernst Wolfgang Stautner
  • Patent number: 11959673
    Abstract: A refrigeration system includes a compressor for compressing a refrigerant, a condenser for cooling the refrigerant, an evaporator for heating the refrigerant, and a lubrication system for providing a lubricant mist to a movable component of the compressor. The lubrication system includes an ejector arranged in fluid communication with the compressor and the evaporator, wherein the lubricant mist is carried by the refrigerant to the movable component.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: April 16, 2024
    Assignee: CARRIER CORPORATION
    Inventors: Jeremy Wallet-Laily, Ulf J. Jonsson, Charbel Rahhal, Nicolas Fonte, Zaffir A. Chaudhry, David M. Rockwell, Amit Vaidya, Scott M. MacBain, Yifan Qiu, Benjamin J. Blechman
  • Patent number: 11953015
    Abstract: A centrifugal compressor for a chiller includes a first stage impeller, a first stage diffuser, a second stage impeller, a second stage diffuser, and a second stage volute. The first stage impeller is arranged to receive refrigerant from an inlet. The second stage volute is disposed downstream of the second stage diffuser to receive the refrigerant after the refrigerant has been compressed. The second stage volute has a reverse overhung configuration.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: April 9, 2024
    Assignee: Daikin Industries, Ltd.
    Inventor: Midori Drake
  • Patent number: 11939978
    Abstract: In order to improve a machine for depressurizing or compressing substantially gaseous media, comprising a machine casing and at least one screw rotor, which is arranged in a screw rotor bore in the machine casing, extends between a low-pressure side and a high-pressure side of the screw rotor bore, cooperates with the substantially gaseous medium and is mounted on both sides in the machine casing by means of a respective bearing set, and a motor/generator unit that is coupled or couplable to the at least one screw rotor, it is proposed that the at least one screw rotor should be provided with at least one axial support bearing that axially supports the at least one screw rotor such that a high-pressure end face of the at least one screw rotor is guided, without making contact, to an end wall, which faces this end face, of the machine casing that receives the at least one screw rotor.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: March 26, 2024
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Marcus Blumhardt
  • Patent number: 11929643
    Abstract: An electric compressor motor includes a stator ring having a plurality of stator winding slots and a plurality of stator windings. Each of said stator windings is received in a stator winding slot of the plurality of stator winding slots. The stator ring also includes a plurality of cooling slots. Each cooling slot in the plurality of coolant slots is defined along an axial length of at least one corresponding stator winding slot of the plurality of stator winding slots such that a shared opening between each stator winding slot and at least one corresponding coolant slot is defined. The cooling slots are configured to allow coolant to directly contact at least one stator winding in the corresponding at least one stator winding slot.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 12, 2024
    Assignee: Carrier Corporation
    Inventors: Vishnu M. Sishtla, Michael Westlake
  • Patent number: 11923746
    Abstract: A shield for controlling the cooling within a hermetically cooled motor, and a compressor incorporating the shield are provided. The shield includes an insulator, at least one fastener, and a venting aperture. The insulator restricts the flow of a working fluid between a first side and a second side. The at least one fastener secures the insulator. The venting aperture controls a pressure differential between the first side and the second side. The venting aperture may include at least one hole through the insulator. The venting aperture may be provided as a hole through the insulator for the rotating shaft of the compressor.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: March 5, 2024
    Assignee: CARRIER CORPORATION
    Inventors: Scott A. Nieforth, Vishnu Sishtla
  • Patent number: 11906214
    Abstract: A compressor comprises a suction port configured to receive a refrigerant and means for compressing the refrigerant. The means for compressing forms at least one compression chamber, a discharge port configured for discharging the compressed refrigerant from the compressor, and a motor. The means for compressing comprises at least one opening for extracting a portion of the refrigerant from the at least one compression chamber and supplying the extracted portion of the refrigerant to the motor. A method comprises receiving a refrigerant at a suction port of the compressor, compressing the refrigerant in at least one compression chamber formed by a means for compressing of the compressor, discharging the refrigerant from the compressor at a discharge port of the compressor, and extracting a portion of the refrigerant from the at least one compression chamber and supplying the extracted portion of the refrigerant to a motor of the compressor.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: February 20, 2024
    Assignee: Copeland Europe GmbH
    Inventors: Xiaogeng Su, Jesus Nohales, Linus Dellweg, Marco Ruiz
  • Patent number: 11906226
    Abstract: A vapor compression system (20; 120; 220; 320) has: first (22A; 122A; 222A) and second (22B; 122B; 222B) compressors; first (40) and second (46) heat exchangers; and one or more expansion devices (52; 52A, 52B). Means (32A, 32B; 32A, 32B, 126A, 126B; 32A, 32B, 232A, 232B) are provided for switching the system between operation in first and second modes using the respective first and second compressors. In the first mode: the first compressor compresses refrigerant; the compressed refrigerant is cooled in the first heat exchanger; the cooled refrigerant is expanded in at least one of the one or more expansion devices; and the expanded refrigerant absorbs heat in the second heat exchanger. In the second mode: the second compressor compresses refrigerant; the compressed refrigerant is cooled in the second heat exchanger; the cooled refrigerant is expanded in at least one of the one or more expansion devices; and the expanded refrigerant absorbs heat in the first heat exchanger.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 20, 2024
    Assignee: Carrier Corporation
    Inventors: Jeremy Wallet-Laïly, Ahmad M. Mahmoud, Parmesh Verma
  • Patent number: 11897618
    Abstract: Disclosed is a cabin air compressor (CAC) of an aircraft environmental control system, the CAC having: a CAC case defining a forward end and an aft end axially spaced apart axially from the forward end, wherein the forward end defines a compressor inlet; and a supplemental cooling passage defined by the CAC case, wherein the supplemental cooling passage is configured to direct a supplemental cooling medium through it.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: February 13, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Brent J. Merritt, Darryl A. Colson, David Anderson, Mark Mongillo
  • Patent number: 11876433
    Abstract: A housing of a drive device includes a tubular portion, a side plate portion, a plate portion, and a peripheral wall portion. The tubular portion extends in a first direction and accommodates a motor. The side plate portion has a plate shape intersecting the first direction, and is at one end portion of the tubular portion in the first direction. The plate portion expands from the tubular portion along one of the first direction and a second direction perpendicular to the first direction. The peripheral wall portion surrounds an inverter accommodation portion that accommodates inverter when viewed from a third direction perpendicular to the first direction and the second direction, and is connected to the plate portion. Each of a pump and an oil cooler is at any of one end portion of the peripheral wall portion in the second direction, another end portion of the plate portion in the third direction, and another end portion of the side plate portion in the first direction.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: January 16, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Hitoshi Kuroyanagi, Naohiro Wada
  • Patent number: 11852150
    Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a compressor with a gas bearing supplied with compressed gas and a controller. The controller is configured to determine an inlet pressure and outlet pressure of the gas bearing, determine a maximum speed limit based on the inlet pressure and the outlet pressure, and prevent the compressor from operating at a speed that is greater than the maximum speed limit. A method of controlling a compressor includes calculating a maximum speed limit based on an inlet pressure and an outlet pressure of the gas bearing. The method also includes in response to determining that a speed setting is greater than the maximum speed limit, adjusting operation of the compressor such that a speed of the compressor is at or below the maximum speed limit.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: December 26, 2023
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Jacob T. Helgerson, Jay H. Johnson
  • Patent number: 11808345
    Abstract: An object of the present invention is to appropriately control cooling water and oil according to situations. A computing device controls a flow rate of cooling water supplied to a motor and an oil pump that supplies oil from a gear box attached to the motor to a coil of the motor. The computing device suppresses the flow rate of the cooling water supplied to the motor when a temperature of oil in the gear box is less than a first threshold, and a temperature of the coil is less than a second threshold, and operates the oil pump.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 7, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Shogo Miyamoto
  • Patent number: 11796238
    Abstract: If a first condition that an intermediate pressure corresponding to a pressure of an intermediate flow path is greater than a predetermined value is satisfied in an operation in which first, second, and third compressors are operated, the control unit executes a first action of increasing the number of revolutions of the third compressor.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: October 24, 2023
    Assignee: Daikin Industries, Ltd.
    Inventors: Masaaki Takegami, Yoshikazu Uehara, Akitoshi Ueno
  • Patent number: 11791742
    Abstract: A protection device for a pulse inverter is provided and is configured to be detachably arranged on an opening of an open housing part of the pulse inverter, wherein the protection device is configured to protect from dirt, mechanical impact and/or electrostatic charging, at least one inner element of the pulse inverter, in particular an electrical system and/or an electronic system, which is arranged in the open housing part. Furthermore, a pulse inverter is provided comprising a housing, as well as an e-machine with a pulse inverter.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: October 17, 2023
    Assignee: AUDI AG
    Inventors: Tobias Enzinger, Benjamin Söhnle
  • Patent number: 11788524
    Abstract: A cooling arrangement for an at least two-stage compressed air generator. The cooling arrangement comprises an intercooler arranged between a first and a second compressor stage, an aftercooler arranged after the second compressor stage, and a subassembly cooler, which absorbs heat from further subassemblies of the compressed air generator. A coolant circuit comprises a main cooler, the cold side supplying a cooled coolant parallel to the respective coolant inlet of the intercooler, of the aftercooler and of the subassembly cooler, and the hot side receiving the heated coolant exiting in parallel at the respective coolant outlet of the intercooler and of the aftercooler. The coolant outlet of the subassembly cooler is connected to a feed inlet of the intercooler and/or of the aftercooler.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: October 17, 2023
    Assignee: Gardner Denver Deutschland GMBH
    Inventors: Frank Georg Klaus, Ulrich Thomes, Marc Schiel
  • Patent number: 11781547
    Abstract: A compressor is disclosed which can include a first stage and a second stage. In one form the compressor includes contact cooled compressor stages. The compressor can include a rod useful to inject a lubricant for purposes of cooling/lubricating/sealing the rotating components of the compressor. In one form the rod is an elongate rod with openings which permit a lubricant such as oil to be injected. The injected oil can be atomized via the openings. The rod can be positioned in the interstage space between the first and second stages, and can include a variety of openings.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: October 10, 2023
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Ryan D. Hartman, Daniel R. Crum, Ryan Coleman, Philipp Bothe
  • Patent number: 11781788
    Abstract: Disclosed is a cascade air conditioner system.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: October 10, 2023
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Xingru Liu, Xiangfei Liang, Bo Zheng
  • Patent number: 11781787
    Abstract: A 3000-20000 rpm RS-SR motor (RS-SR) and adjustable speed drive (ASD), with a cooling and lubrication system that is independent of the existing chiller lubrication and refrigerant cooling circuits. Product is configured as a direct replacement for motor, starter (drive), and gearbox solutions historically and currently used by OEM's on chillers. Oil containment and low motor cavity pressure is achieved with Axial Carbon Ceramic seals. Using an inner shell suspended in an outer shell: a coolant path is created, and vibration is abated, as well as meeting pressure vessel requirements. These features enable precise qualification of product independent of the chiller system over range of speeds and loads on a calibrated test stand. Specific information derived from qualification tests enables integration of optimization subroutines into the ASD that improve efficiency and increase ability to operate at or near compressor surge boundary.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: October 10, 2023
    Inventors: Reed Harmon Carpenter, Donald Conrad Perry
  • Patent number: 11761446
    Abstract: An asymmetric scroll compressor includes a compressor housing. An orbiting scroll member and a non-orbiting scroll member disposed within the compressor housing. The orbiting scroll member and the non-orbiting scroll member each includes a baseplate and a wrap extending from the baseplate. The orbiting scroll member and the non-orbiting scroll member intermeshed to form a plurality of compression pockets. A driveshaft affixed to the orbiting scroll member and configured to orbit the orbiting scroll member from a first orbital position to a second orbital position. A communication port disposed on the baseplate of one of the orbiting scroll member and the non-orbiting scroll such that: in the first orbital position, the communication port communicates with a first enclosed pocket of the plurality of compression pockets, and in the second orbital position, the communication port communicates with a second enclosed pocket of the plurality of compression pockets.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: September 19, 2023
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Joseph E. Ziolkowski, Jr., Eric S. Mlsna
  • Patent number: 11738472
    Abstract: An articulation for a robot, in particular a collaborative robot, includes as components a drive, a transducer for providing information relating to a rotational speed, commutation and/or position, and a plurality of heat exchanger tubes for removing heat from the components, with a first one of the heat exchanger tubes touching a first subset of the components, and with a second one of the heat exchanger tubes touching a second subset of the components.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: August 29, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventor: Detlef Potoradi
  • Patent number: 11728710
    Abstract: The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: August 15, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Takanobu Oyama, Keisuke Fukunaga
  • Patent number: 11719122
    Abstract: A method of removing heat from an electrical machine located in a gas turbine engine at least partially inward of a core airflow path in a radial direction, the electrical machine comprising an outer electrical machine stator and an inner electrical machine rotor is provided. The method includes directing a liquid coolant radially inward past the outer electrical machine stator and toward an inner electrical machine rotor using a coolant passageway. The liquid coolant is directed onto and/or through one or both of the inner electrical machine rotor and a rotor support thereby removing heat from the inner electrical machine rotor.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: August 8, 2023
    Assignees: General Electric Company, General Electric Company Polska sp. z.o.o., General Electric Deutschland Holding GmbH
    Inventors: Adam Tomasz Paziński, Tomasz Jan Bulsiewicz, Bartlomiej Drozd, Miroslaw Czarnik, Mohamed Osama, John R. Yagielski
  • Patent number: 11713909
    Abstract: This disclosure relates to a compressor having a shaft, wherein the shaft is hollow to define a fluid passage extending along the shaft and a motor arranged along the shaft. A motor cooling line is configured to convey a cooling fluid to the motor, wherein the motor cooling line is fluidly connected to the fluid passage. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: August 1, 2023
    Inventor: William Turner Thornton
  • Patent number: 11672197
    Abstract: Systems and methods for suppressing vaporization of a volatile fluid dispensed from a pressure vessel are provided. The system includes an evaporator coupled in thermal communication with a first flow of volatile fluid from the vessel and in fluid communication with a second flow of volatile fluid from the vessel. The evaporator includes at least one channel for channeling the second flow of volatile fluid therethrough. A metering valve is coupled in fluid communication with the channel and between the evaporator and the vessel. In addition, the system includes a compressor coupled in fluid communication with and downstream from the at least one channel. Moreover, the system includes a return line coupled in fluid communication with an outlet of the compressor. The compressor is configured to compress the second flow of volatile fluid and channel the compressed second flow of volatile fluid to the pressure vessel via the return line.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: June 13, 2023
    Assignee: Capstan Ag Systems, Inc.
    Inventor: Kale Schrader
  • Patent number: 11635091
    Abstract: The disclosed technology generally relates to a compressor housing, comprising a first portion configured to house a compressor motor of a centrifugal compressor, a second portion configured to house an inlet housing of the centrifugal compressor, where the inlet housing is configured to receive refrigerant into an impeller assembly of the centrifugal compressor, and at least one refrigerant accumulator upstream of the second portion, the at least one refrigerant accumulator configured to accumulate liquid refrigerant.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: April 25, 2023
    Assignee: Honeywell International Inc.
    Inventors: Andrew Zug, Amanda Webb, Michael Leighty
  • Patent number: 11619228
    Abstract: A compressor includes a shell assembly, a compression mechanism and a conduit. The shell assembly defines a chamber. The compression mechanism is disposed within the chamber of the shell assembly and includes a first scroll member and a second scroll member in meshing engagement with each other. The second scroll member includes a suction inlet. The conduit directs working fluid into the suction inlet and includes a first end defining an inlet opening and a second end defining an outlet opening adjacent to the suction inlet. The second end includes a locating pin that extends outwardly therefrom.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: April 4, 2023
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Joey L. Kingseed, Daniel J. Striebich, Joshua S. King
  • Patent number: 11608837
    Abstract: The disclosed technology generally relates to a compressor housing, comprising a first portion configured to house a compressor motor of a centrifugal compressor, a second portion configured to house an inlet housing of the centrifugal compressor, where the inlet housing is configured to receive refrigerant into an impeller assembly of the centrifugal compressor, and at least one refrigerant accumulator upstream of the second portion, the at least one refrigerant accumulator configured to accumulate liquid refrigerant.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: March 21, 2023
    Assignee: Honeywell International Inc.
    Inventors: Andrew Zug, Amanda Webb, Michael Leighty
  • Patent number: 11601023
    Abstract: Provided is a rotary electric machine including a rotor and a stator. The rotor includes a refrigerant passage. An axial direction of the rotor is along the horizontal direction. The stator is placed around the rotor and includes a tubular stator core. The stator core includes: a communication passage via which an inner peripheral surface of the stator core communicates with an outer peripheral surface of the tubular stator core such that the communication passage guides the refrigerant from the inner peripheral surface of the stator core to the outer peripheral surface of the stator core; and a projection portion provided on the outer peripheral surface of the tubular stator core such that the projection portion extends in the axial direction of the tubular stator core. The projection portion is placed downward in the gravitational direction from an opening of the communication passage on the outer peripheral surface.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: March 7, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Matsumoto, Kenta Tabuchi, Masachika Kawa
  • Patent number: 11597284
    Abstract: Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and/or DC outputs. Each module can be independently monitored and controlled.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: March 7, 2023
    Assignee: TAE Technologies, Inc.
    Inventors: Mikhail Slepchenkov, Roozbeh Naderi
  • Patent number: 11515758
    Abstract: The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 29, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Takanobu Oyama, Keisuke Fukunaga
  • Patent number: 11506424
    Abstract: An ejector-based cryogenic refrigeration system for cold energy recovery includes a first cryogenic refrigeration loop connected by a helium compressor and a cryogenic refrigerator and a second cryogenic refrigeration loop connected by the helium compressor, a regenerator, an ejector, a cold head of the cryogenic refrigerator, an end to be cooled and a pressure regulating valve. The cryogenic refrigerator is separated from the end to be cooled. The cryogenic refrigerator and the cryogenic helium cooling loop share a helium compressor, which improves the utilization efficiency of the device and reduces the cost. The ejector allows a part of fluids to circulate in the cryogenic loop, so as to maintain a required cryogenic condition, recover the pressure of the fluids, reduce the gas flowing though the compressor loop, and thus reduce the power consumption of the compressor.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: November 22, 2022
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Cui Li, Yuhan Zhuang, Yiwei Cheng, Jiamin Shi, Yanzhong Li
  • Patent number: 11473580
    Abstract: An electric compressor includes a housing, a drive shaft, a motor, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor and extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction. The introduction passage includes a first passage located outward of the balance weight in a circumferential direction of the rotor and the drive shaft, and a second passage facing the balance weight in the axial direction.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: October 18, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Yuya Hattori, Takumi Maeda
  • Patent number: 11476801
    Abstract: A system and method for determining seasonal energy consumption with the aid of a digital computer is provided. Through a power metering energy loads for a building situated in a known location are assessed as measured over a seasonal time period. Outdoor temperatures for the building are assessed as measured over the seasonal time period through a temperature monitoring infrastructure. A digital computer comprising a processor and a memory that is adapted to store program instructions for execution by the processor is operated, the program instructions capable of: expressing each energy load as a function of the outdoor temperature measured at the same time of the seasonal time period in point-intercept form; and taking a slope of the point-intercept form as the fuel rate of energy consumption during the seasonal time period.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: October 18, 2022
    Assignee: CLEAN POWER RESEARCH, L.L.C.
    Inventor: Thomas E. Hoff
  • Patent number: 11448237
    Abstract: A compressor 1 includes a casing 2 that covers a rotating shaft 4 and an impeller 6 and is provided with a diffuser 66 for guiding the working fluid discharged from the impeller 6 to an outside in a radial direction, a heat exchanger 71 that is cools at least a portion of the working fluid compressed by the impeller 6, a cooling fluid supplying unit 7 that supplies the working fluid cooled by the heat exchanger 71 into the casing 2 as a cooling fluid for cooling a motor 5 disposed in the casing 2, and a cooling fluid circulating unit 8 that discharges the cooling fluid that has passed through the motor 5 to an outside of the casing 2, and supplies the discharged cooling fluid downstream of an outlet 6o of a first impeller 6A and upstream of the diffuser 66.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: September 20, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Akihiro Nakaniwa
  • Patent number: 11408654
    Abstract: The present invention provides an economizer, including a housing having a first section and a second section; and a condenser outlet, an evaporator inlet, and a compressor intermediate-stage inlet that are disposed on the second section of the housing; wherein the first section has a contour matching a housing of a commonly used condenser, such that the first section can fit the housing of the condenser. The economizer of the present invention can better match an outer contour of a conventional condenser, so that the both can fit each other in arrangement as much as possible when applied to an overall layout of a refrigeration system, thereby significantly reducing a transverse space occupied by the refrigeration system.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 9, 2022
    Assignee: CARRIER CORPORATION
    Inventors: Haiping Ding, Michael Stark
  • Patent number: 11381146
    Abstract: In a drive device having a tubular linear motor with a stator (1), an armature (2) and a bottom flange (30), the stator (1) is arranged on the bottom flange (30) in thermal contact with the bottom flange (30). The stator (1) is fluid-tightly enclosed by stainless steel. The bottom flange (30) consists at least partly of a material having a higher thermal conductivity than stainless steel. The stator (1), together with the bottom flange (30), is enclosed by a casing (40) made of stainless steel which is in thermal contact with the bottom flange (30) and encloses the bottom flange (30) and the stator (1) in common. The stator (1) is a tubular stator (1) having drive coils (12) arranged therein and also having a longitudinal axis and a through-hole (11) which extends through the tubular stator (1) coaxially with the longitudinal axis.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: July 5, 2022
    Assignee: NTI AG
    Inventor: Ronald Rohner
  • Patent number: 11359978
    Abstract: A system and method for interactively evaluating energy-related investments affecting building envelope with the aid of a digital computer are provided. Obtained is a total amount of fuel purchased for a building over a set period from which an existing amount of the fuel consumed for space heating is derived. Characteristics including thermal performance and furnace and delivery efficiencies of the building for both existing and proposed equipment are obtained, including remotely controlling a heating source inside the building. The thermal performance and furnace and delivery efficiencies characteristics of the existing and proposed equipment are expressed as interrelated ratios. An amount of fuel to be consumed for space heating is evaluated as a function of the existing amount of the fuel consumed for space heating and the ratios of the existing and proposed equipment.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 14, 2022
    Assignee: CLEAN POWER RESEARCH, L.L.C.
    Inventor: Thomas E. Hoff
  • Patent number: 11351828
    Abstract: A method for operating a pressure control system having a multistage compressor. The method comprises providing a pressure medium compressed multiple times by the multistage compressor in order to fill a pressure medium reservoir or pressure medium chambers of the pressure control system, by performing (i) providing, by a first compression stage, a precompressed pressure medium and additionally compressing the precompressed pressure medium via a second compression stage, and/or (ii) introducing, into an intermediate volume between the first compression stage and the second compression stage of the multistage compressor, an already compressed charge pressure medium and compressing, by the second compression stage, the charge pressure medium again. An intermediate pressure of the precompressed pressure medium conveyed into the intermediate volume is limited by an overpressure valve interacting with the first compression stage.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: June 7, 2022
    Assignee: ZF CV SYSTEMS EUROPE BV
    Inventors: Morten Gehrke, Uwe Stabenow, Jonas Wichern
  • Patent number: 11156231
    Abstract: A vapor cycle compressor includes a motor section and a compression section operatively engaged with the motor section. A refrigerant path is in the motor section and in the compression section. The refrigerant path includes: a compression refrigerant path, for a single phase compression refrigerant, in the compression section; an inner rotor shaft refrigerant path, for a single phase inner rotor shaft refrigerant, in the compression section and in the motor section; and a stator refrigerant path, for a two phase stator refrigerant, in the motor section.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 26, 2021
    Assignee: Honeywell International Inc.
    Inventors: Michael Leighty, Dennis Mikio Morita, Stephen L White
  • Patent number: 10879769
    Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis extending in a horizontal direction, a differential connected to the motor, a housing including a housing space to house the motor and the differential, oil in a vertically lower region of the housing space, and an oil passage to feed the oil from the vertically lower region of the housing space to the motor. A pump is fixed to an outer peripheral surface of the housing and is located in a channel of the oil passage. The pump is on an opposite side of the motor axis with respect to the differential when viewed in an axial direction of the motor axis.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 29, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Yasuo Yamaguchi, Takayuki Migita
  • Patent number: 10591188
    Abstract: A refrigeration cycle device includes a refrigeration cycle formed by connecting a compressor, a condenser, an expansion valve and an evaporator to each other. As a refrigerant in the refrigeration cycle, a working fluid containing 1,1,2-trifluoroethylene (R1123) and difluoromethane (R32) is used. A degree of opening of the expansion valve is controlled such that the refrigerant has two phases at a suction portion of the compressor.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: March 17, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fuminori Sakima, Akira Fujitaka, Shigehiro Sato, Kenji Takaichi, Yoshikazu Kawabe, Hiroaki Nakai
  • Patent number: 10523068
    Abstract: A stator of an electric machine for a hybrid vehicle or electric vehicle includes: a substantially cylinder-jacket-shaped, axially extending stator carrier. The stator carrier is configured to carry a lamination stack having a plurality of stator teeth substantially annularly arranged and has a radially inwardly extending shoulder edge configured so as to axially support the lamination stack. At least one cutout is formed at the shoulder edge of the stator carrier.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: December 31, 2019
    Assignee: ZF Friedrichshafen AG
    Inventors: Klaus Geidel, Matthias Weidner, Alexander Schäflein, Matthias Cudok
  • Patent number: 10465962
    Abstract: A system may include first and second compressors, first and second heat exchangers, a flash tank, and first, second and third fluid paths. The first compressor may include first and second inlets. The second compressor may receive fluid from an outlet of the first compressor. The first heat exchanger may receive fluid from the second compressor. The flash tank may receive fluid from the first heat exchanger and includes a vapor outlet and a liquid outlet. The second heat exchanger may be in fluid communication with the flash tank and may receive fluid from the liquid outlet. The first fluid path extends from an outlet of the second heat exchanger to an inlet of the second compressor. The second fluid path extends from the vapor outlet to the first fluid path. The third fluid path may transmit fluid from the vapor outlet to the second inlet.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: November 5, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov
  • Patent number: 10280938
    Abstract: A motorcompressor unit includes a first motor driving the rotation of a rotor and a compression stage including a bladed impeller mounted on a driven shaft, the rotation of which is driven by the rotor. Also, common casing is gastight with respect to fluid handled by the motorcompressor unit, where the compression stage and the first motor are mounted in the common casing. The compression stage also includes a regulating member that regulates the angle at which the fluid flows to or from the bladed impeller, and a second motor that controls the regulating member, the second motor being mounted in the common casing.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 7, 2019
    Assignee: THERMODYN
    Inventor: Gilles Nawrocki
  • Patent number: 10156384
    Abstract: A climate control system is provided and may include a compressor, a first heat exchanger, a second heat exchanger, and a coolant flow path. The compressor may include a suction port, a first discharge port and a second discharge port. The first heat exchanger may be in fluid communication with the first discharge port. The second heat exchanger may be in fluid communication with the second discharge port. The coolant flow path may be in fluid communication with the first heat exchanger and the second heat exchanger.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: December 18, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Kirill Ignatiev
  • Patent number: 9291167
    Abstract: An apparatus and method for cooling a compressor motor (152)having a motor stator (162) and rotor (166)in a refrigerant system(100). The method cools the rotor and the stator, electromagnetic bearings (160)located within a compressor housing providing refrigerant liquid to the stator internal channels, the channels being in fluid communication with a rotor passageway (172), and a flow-control device (168) controlling refrigerant flow into the stator. A temperature monitoring device (176) in communication with a controller (140) monitors motor temperature. The controller (140)evaluates the motor temperature and adjusts refrigerant flow through the flow control device (168), maintaining the motor (152) within a predetermined temperature range.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: March 22, 2016
    Assignee: Johnson Controls Technology Company
    Inventor: Jeb W. Schreiber
  • Patent number: 9212661
    Abstract: An electric compressor includes a housing, an electric motor, a compression mechanism, and a resin molding. The electric motor includes a coil having coil ends projecting from each of two end surfaces of the stator. Refrigerant flows through the housing that accommodates the electric motor. The resin molding covers each coil end and includes an opening that exposes part of the coil end to the interior of the housing.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: December 15, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi Fukasaku, Shozo Hamana
  • Patent number: 9148041
    Abstract: An electric machine (1) has a hollow rotor shaft (3) and a stationary cooling lance (13) that penetrates the hollow shaft (3) axially. The cooling lance (13) has an inlet (16) and an outlet (17) for a cooling medium. A cooling duct (18) penetrates the cooling lance (13) axially and is connected to the inlet (16) and the outlet (17) for guiding the cooling medium through the cooling lance (13). The cooling lance (13) also has an inlet (24) and an outlet (25) for oil. An oil duct (26) penetrates the cooling lance (13) axially and is connected to the oil inlet (24) and outlet (25) for guiding the oil through the cooling lance (13). The outlet (25) for the oil is connected to an annular space (27) between the cooling lance (13) and the rotor shaft (3). The annular space (27) has an opening (28) for the oil.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 29, 2015
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Daniel Knoblauch
  • Patent number: 9054565
    Abstract: Embodiments of the invention provide an electric machine module including a housing. In some embodiments, the housing can include a sleeve member coupled to at least one end cap. The housing can include an inner wall at least partially defining a machine cavity, a coolant sump, and at least one coolant channel positioned between the inner wall and an outer wall of the housing. In some embodiments, the coolant channel can be in fluid communication with the coolant sump. In some embodiments, an electric machine can be positioned in the machine cavity. The electric machine can comprise a stator assembly including stator end turns and a rotor assembly. In some embodiments, a coolant jacket can be at least partially defined by the housing and can be positioned so that to at least partially circumscribe a portion of the stator assembly.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: June 9, 2015
    Assignee: Remy Technologies, LLC
    Inventor: David A. Fulton
  • Patent number: 8959950
    Abstract: A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: February 24, 2015
    Assignee: Daikin Applied Americas Inc.
    Inventors: Mark C. Doty, Earl A. Champaigne, Thomas E. Watson, Paul K. Butler, Quentin E. Cline, Samuel J. Showalter