Compressor-condenser-evaporator Circuit Patents (Class 62/498)
  • Patent number: 11313582
    Abstract: An indoor unit of an air-conditioning apparatus includes a housing defining an outer shape of the indoor unit, and a pipe hole-opening groove section that is in a form of grid-like grooves on an inner surface of the housing. The housing has a box-like shape and includes a lower one surface panel forming a lower end of one side surface of the housing, a one end bottom panel forming one end of a bottom surface of the housing, a lower other surface panel forming a lower end of the other side surface of the housing, and the other end bottom panel forming the other end of the bottom surface of the housing. The pipe hole-opening groove section is formed in at least one of the lower one surface panel, the one end bottom panel, the lower other surface panel, and the other end bottom panel.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: April 26, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tsuyoshi Hayashi, Yuki Watanabe, Masahide Kinami
  • Patent number: 11293673
    Abstract: A thermal management system is described. The thermal management system includes an open circuit refrigeration circuit that has a refrigerant fluid flow path, with the refrigerant fluid flow path including a receiver configured to store a refrigerant fluid, an ejector having a primary flow inlet configured to receive refrigerant, a liquid separator, an evaporator configured to extract heat from a heat load that contacts the evaporator, with the evaporator coupled to the ejector and the liquid separator, and an exhaust line coupled to a vapor side outlet of the liquid separator. In operation, the evaporator in the open circuit refrigeration circuit would be coupled to a heat load.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: April 5, 2022
    Assignee: Booz Allen Hamilton Inc.
    Inventors: Igor Vaisman, Joshua Peters
  • Patent number: 11280553
    Abstract: The present invention relates to a heat exchanger. The heat exchanger according to the present invention includes: an outer pipe; a first sub heat exchange part and a second sub heat exchange part which are disposed inside the outer pipe, and in which a second fluid flows around a first fluid pipe through which a first fluid flows; and a main heat exchange part which is disposed, inside the outer pipe, between the first sub heat exchange part and the second sub heat exchange part, and in which the first fluid flows around a plurality of narrow pipes through which the second fluid flows.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 22, 2022
    Assignee: LG Electronics Inc.
    Inventors: Jaeheuk Choi, Kyungrock Kim, Byoungjin Ryu
  • Patent number: 11280524
    Abstract: In an embodiment of the present disclosure, a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a variable speed drive (VSD) enclosure. The VSD enclosure includes a main drive line variable speed drive (VSD) configured to supply power to a motor, and an oil pump variable speed drive (VSD) configured to supply power to a pump. The pump is configured to supply oil to one or more moving parts of the HVAC&R system. Additionally or in the alternative to the oil pump VSD, the VSD enclosure includes a magnetic bearing controller and/or a magnetic bearing controller power supply. The magnetic bearing controller is configured to control magnetic bearings of the HVAC&R system.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: March 22, 2022
    Assignee: Johnson Controls Technology Company
    Inventors: Scott Victor Slothower, Ajit Wasant Kane, Seth Kevin Gladfelter, Jeb William Schreiber
  • Patent number: 11255578
    Abstract: An isothermal turbo-compressor-condenser-expander (ITCCE) includes heat-transferring fan blades that are mounted on, or surround, individual conduits to promote air exchange and heat transfer. In operation, the open framework rotates in free air to promote heat exchange. An ITCCE bladed assembly includes a driven central hub assembly with a first fluid coupling. A first inner plenum is in fluid communication with the fluid coupling. A plurality of compressor multiport conduits extend radially, and pass fluid from, the first inner plenum to an outer plenum that acts as an equalizing line. A return path is provided to the fluid coupling from the outer plenum. The conduits can be formed as metal extrusions, including internal ribs that separate a plurality of ports formed therebetween along an entire length of the conduits. The conduits can define an airfoil shape and/or are axially twisted, generating axial airflow. The return path can include return multiport conduits.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 22, 2022
    Assignee: Appollo Wind Technologies LLC
    Inventors: Peter A. Swett, Randell B. Drane
  • Patent number: 11236952
    Abstract: A heat exchanger may include an outer casing extending in a longitudinal direction and delimiting a volume through which a first fluid is flowable, and a tube bundle including a plurality of tube bodies arranged in the volume and through which a second fluid is flowable. In a cross section, the volume may have an inner surface area and an inner circumference and each tube body may have an outer circumference and an outer surface area. A ratio of a sum of the outer circumferences to the inner circumference may be at least 5.5, and a sum of the outer surface areas may account for 64% or less of the inner surface area. A residual cross section area of the inner surface area may be delimited between the outer casing and the plurality of tube bodies.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: February 1, 2022
    Inventors: Predrag Panic, Dieter Schmadl
  • Patent number: 11231232
    Abstract: The present disclosure describes a heat exchanger of a motor vehicle that is supplied with a cooling air mass flow that changes depending on a travelling speed of the motor vehicle. The heat exchanger includes a heat exchanger block with a plurality of flat tubes that are each received on a longitudinal end side in an associated passage opening of a tube sheet and provide a coolant path. A tank is connected to the tube sheet and defines a coolant header. An additional element is arranged on an outer edge or on an outer marginal region of the tube sheet. The additional element is structured and arranged to provide an at least partial covering of the tube sheet relative to an inflow side, e.g., relative to the cooling air mass flow.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: January 25, 2022
    Inventors: Carsten Flesch, Florian Gruber, Jens Ruckwied, Sven-Fabian Zeh
  • Patent number: 11221168
    Abstract: A compressor retrofit assembly for replacing a D/C compressor with an A/C compressor includes a control unit that is installable in a refrigerator when the compressor in the refrigerator has failed. The control unit is electrically coupled with an existing power supply in the refrigerator, a compressor relay of a replacement compressor for the refrigerator, an existing power input of a fan in the refrigerator and a coil of the compressor relay of the replacement compressor. The control unit supplies electrical power to the coil of the compressor relay thereby facilitating the compressor relay to be closed. In this way the control unit supplies operational voltage to the replacement compressor.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: January 11, 2022
    Inventor: Samuel Eiland
  • Patent number: 11215387
    Abstract: An accumulator connected to a compressor, the accumulator including a case that forms a space in which liquid refrigerant and gaseous refrigerant are accommodated, a suction pipe which is connected to the case, and at least one connection pipe which connects a side surface of the case and a suction side of the compressor, whereby a space between a side surface of the compressor and a side surface of the accumulator is less than a length of a portion of the connection pipe from the side surface of the compressor to the side surface of the accumulator.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: January 4, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Sejin Ku, Hyungjin Park, Sangmyung Byun, Gyeongsu Jin
  • Patent number: 11125473
    Abstract: There is provided an air conditioner capable of displaying sufficient cooling ability in each indoor unit by allowing a sufficient amount of refrigerant to flow into indoor units where cooling ability cannot be displayed. By executing refrigerant amount balance control, since degrees of opening of indoor expansion valves are narrowed in indoor units whose refrigerant superheating degrees are smaller than an average refrigerant superheating degree, amounts of refrigerant flowing into the indoor expansion valves are decreased. In the indoor unit where the refrigerant superheating degree is higher than the average refrigerant superheating degree, since refrigerant pressure on a downstream side of the indoor expansion valve is also decreased due to the degrees of opening of the indoor expansion valves being narrowed, the difference in pressure between the upstream side and the downstream side of the indoor expansion valve increases and an amount of refrigerant flowing into the indoor unit is increased.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: September 21, 2021
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Hideya Tamura, Shinju Watanabe, Shinya Asano, Takashi Kimura, Kotaro Toya, Yoshiki Tanaka, Yuki Watanabe
  • Patent number: 11060741
    Abstract: The purpose of the present invention is to maintain a water supply temperature close to a target water supply temperature at the time of a change in the number of heat source machines operating. A heat source system of the present invention anticipates a case where a prescribed minimum flow rate is set for heat source machines that are subject to addition or removal, and calculates, as compensation temperatures, hot and cold water outlet temperatures of the heat source machines so that the water supply temperature in such a case will match a target water supply temperature, and changes the hot and cold water outlet temperature settings of the operating heat source machines to the compensation temperatures. After that, the heat source machines that are subject to addition or removal are either started up or stopped, and the set flow rate for the heat source machines that are subject to addition or removal is set to the minimum flow rate.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: July 13, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Toshiaki Ouchi, Minoru Matsuo, Koki Tateishi, Satoshi Nikaido
  • Patent number: 11008493
    Abstract: A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a refrigeration circuit. A refrigerant composition including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150 is included. The refrigerant composition includes a mixture including R-1336mzz-(Z) and R-1130-(E), wherein an amount of R-1336mzz-(Z) in the mixture is in a range from at or about 69% by weight to at or about 81% by weight, and an amount of R-1130-(E) in the mixture is in a range from at or about 31% by weight to at or about 19% by weight.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: May 18, 2021
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Stephen A. Kujak, Kenneth J. Schultz
  • Patent number: 10962264
    Abstract: A heat source unit for a refrigeration apparatus includes: a refrigerant circuit including a shut-off valve, a compressor, a heat exchanger, and a first refrigerant pipe positioned between the shut-off valve and the compressor; a fan that sends air to the heat exchanger; a casing that includes a side panel and that accommodates the refrigerant circuit and the fan; and a partitioning panel that partitions an internal space of the casing into a first space on the side panel side where the compressor is disposed, and a second space where the fan is disposed. The fan blows the air that has passed through the heat exchanger out to a front-surface side of the casing. The compressor, the shut-off valve, and the side panel are disposed in the stated order as the compressor, the shut-off valve, and the side panel as seen in a front view.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 30, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Keiko Kobayashi, Ying Ying Ji
  • Patent number: 10955172
    Abstract: Disclosed is a high-temperature air conditioning device. By changing an arrangement mode of throttle valves, a pressure of refrigerant inside a low-pressure pipeline is made to be lower than a pressure of refrigerant inside a medium-pressure pipeline, thus ensuring that the refrigerant, used for cooling components, inside the low-pressure pipeline has a low pressure, thereby solving a problem in the prior art that a frequency converter, a motor and lubricating oil are not cooled sufficiently or cannot be cooled due to excessively high evaporation pressure.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 23, 2021
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hua Liu, Hongbo Li, Zhiping Zhang, Sheng Wang, Dongjun Sun
  • Patent number: 10944349
    Abstract: The present disclosure discloses a multi-inverter electric motor controller, which solves the technical problem that the existing inverter with silicon-based devices cannot accurately modulate high-frequency currents. The multi-inverter electric motor controller comprises a primary inverter and one or more secondary inverters, where the primary inverter and the secondary inverters connect in parallel to a same electrical motor, the primary inverter employs silicon-material power electronic devices, the secondary inverters employ wide-bandgap semiconductor power electronic devices, and the switching frequency of the primary inverter is less than the switching frequencies of the secondary inverters. According to the present disclosure, the existing inverter with silicon-based devices and the inverters with wide-bandgap semiconductor devices are connected in parallel, and can complete the fine control of the harmonic waves of high-frequency currents.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 9, 2021
    Assignee: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
    Inventor: Zifu Wang
  • Patent number: 10926609
    Abstract: There is disclosed a vehicle air conditioning device which is capable of judging, as early as possible, refrigerant shortage, for example, due to leakage of refrigerant with elapse of time, and protecting a compressor. The vehicle air conditioning device includes a compressor 2, a radiator 4, an outdoor expansion valve 6, and a heat absorber 9. A control device possesses normal time data indicating a relation between a suction refrigerant temperature Ts and a discharge refrigerant temperature Td of the compressor when a refrigerant circuit R is charged with a sufficient amount of the refrigerant. The control device calculates, from the normal time data, a discharge refrigerant temperature estimated value Tdst at normal time on the basis of the current suction refrigerant temperature Ts, and compares the value and the current discharge refrigerant temperature Td, thereby judging refrigerant shortage of the refrigerant circuit.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: February 23, 2021
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Tetsuya Ishizeki, Yuma Yamazaki, Akira Horikoshi, Kohei Yamashita, Ryo Miyakoshi, Megumi Shigeta
  • Patent number: 10899197
    Abstract: An air conditioner includes an inside condenser, an outside heat exchanger, an inside evaporator, a refrigerant circuit switcher, and an air passage switcher. The refrigerant circuit switcher is configured to switch a layout of the refrigerant circuit to (i) a first circuit during a heating mode such that the refrigerant releases heat at the inside condenser and is decompressed to evaporate at the outside heat exchanger and (ii) a second circuit during a defrosting mode such that the refrigerant releases heat at the outside heat exchanger and is decompressed to evaporate at the inside evaporator. The air passage switcher is configured to switch the air passage to (i) a first passage during the heating mode such that the air passes through the inside evaporator and the inside condenser and (ii) a second passage during the defrosting mode such that the air bypasses the inside condenser.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: January 26, 2021
    Assignee: DENSO CORPORATION
    Inventors: Etsuhisa Yamada, Satoshi Ito, Hiroya Hasegawa
  • Patent number: 10875379
    Abstract: A heat pump system for a vehicle comprises a heating, ventilating, and air conditioning module as well as a refrigerant circuit including a compressor, an internal condenser, and an external condenser. The module comprises a warm air path including the internal condenser, a cold air path formed independently from the warm air path, a purge flow path branching from the warm air path at a position downstream of the internal condenser with respect to a flow of air through the module, and a purge control door adjustable between a first position preventing fluid communication between the warm air path and the purge flow path and a second position allowing fluid communication between the warm air path and the purge flow path. The purge flow path provides fluid communication between the warm air path and the ambient environment.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: December 29, 2020
    Assignee: HANON SYSTEMS
    Inventors: Nicos Agathocleous, James Tasiopoulos, Dennis Vermette, Eric Haupt
  • Patent number: 10801763
    Abstract: In various implementations, an air conditioner may include more than one expansion device. Refrigerant flow through the expansion device(s) may be controlled based at least partially on an operational property of the air conditioner.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 13, 2020
    Assignee: Lennox Industries Inc.
    Inventors: Harold Gene Havard, Jr., Terry Jewell, Yi Qu
  • Patent number: 10782050
    Abstract: An electrochemical climate control system circulates a working fluid comprising ammonia (NH3) and hydrogen (H2). An evaporator volatilizes liquid ammonia for a refrigeration effect. An electrochemical device can increase a total pressure of the working fluid and/or a first partial pressure of ammonia and decrease a second partial pressure of hydrogen when an f is applied. A condenser cools the working fluid/transforms ammonia to a liquid. A separator separates liquid ammonia from gas phase hydrogen. A heat exchanger may be provided downstream of the evaporator. The system may include an ejector combining vapor phase ammonia and gas phase hydrogen in a pressurized stream. A second electrochemical device is optionally included that decreases a pressure of gas phase hydrogen exiting the separator and which generates electrical potential that is transferred to the first electrochemical device. Such high efficiency systems may be free of any mechanical pumps or moving parts.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: September 22, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov
  • Patent number: 10775168
    Abstract: Provided is a sensor device that includes a vibrator unit, an annular base portion, a plurality of coupling portions, and a wiring layer. The wiring layer includes a plurality of drive wirings and a plurality of detection wirings. The plurality of drive wirings are respectively connected to first and second drive electrodes while being adjacent and parallel to one another. The plurality of detection wirings are respectively connected to first and second detection electrodes while being adjacent and parallel to one another. The wiring layer is provided at each of the plurality of coupling portions to electrically connect a plurality of terminal portions provided in the base portion with a plurality of piezoelectric drive units and first and second piezoelectric detection units provided in the vibrator unit.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: September 15, 2020
    Assignee: SONY CORPORATION
    Inventors: Satoshi Mitani, Hidetoshi Kabasawa, Kazuo Takahashi, Hideo Niikura
  • Patent number: 10767091
    Abstract: The present invention relates to a refrigerant composition, including trifluoroiodomethane (CF3I); 1,3,3,3-tetrafluoropropene (HFO-1234ze); difluoromethane (HFC-32), and pentafluoroethane (HFC-125) for use in a heat exchange system, including refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-22 or R-404A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-22 or R-404A.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: September 8, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ankit Sethi, Samuel F. Yana Motta, Gustavo Pottker, Yang Zou, Elizabet del Carmen Vera Becerra, Gregory L. Smith
  • Patent number: 10767911
    Abstract: An apparatus includes a flash tank, a load, a first compressor, a heat exchanger, and a second compressor. The flash tank stores a refrigerant and releases the refrigerant as a flash gas. The load uses the refrigerant to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load and directs the refrigerant to the flash tank. The heat exchanger transfers heat from the refrigerant from a high side heat exchanger to the refrigerant released from the flash tank as the flash gas. The second compressor compresses the refrigerant released from the flash tank as the flash gas.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 8, 2020
    Assignee: Heatcraft Refrigeration Products LLC
    Inventor: Shitong Zha
  • Patent number: 10760835
    Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, wherein at least one evaporator tube being a flat tube with a plurality of micro-channels, through which the refrigerant is guided.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: September 1, 2020
    Assignee: AUDI AG
    Inventors: Hans Hammer, Predrag Hrnjak, Andrew Musser, Stefan Elbel, Jing Che
  • Patent number: 10759257
    Abstract: A refrigeration cycle device includes a compressor, an air-refrigerant heat exchanger that exchanges heat between air and refrigerant, an expansion valve decompressing the refrigerant, a heat medium-refrigerant heat exchanger that exchanges heat between a heat medium and the refrigerant, a cold-heat utilization device that utilizes cold heat of the heat medium, and a hot-heat utilization device that utilizes hot heat of the heat medium. A refrigerant flow switching valve is provided to switch between a heat-medium cooling mode of cooling the heat medium in the heat medium-refrigerant heat exchanger, and a heat-medium heating mode of heating the heat medium in the heat medium-refrigerant heat exchanger.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 1, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Katoh, Koji Miura, Kengo Sugimura, Masayuki Takeuchi, Keigo Satou, Norihiko Enomoto, Nobuyuki Hashimura
  • Patent number: 10760834
    Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes, to be precise at least one evaporator tube being a flat tube with a plurality of micro-channels.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: September 1, 2020
    Assignee: AUDI AG
    Inventors: Hans Hammer, Predrag Hrnjak, Andrew Musser, Stefan Elbel, Wesley Schell
  • Patent number: 10760833
    Abstract: An evaporator in a refrigerant circuit, having a bottom-side inlet chamber which is connected in flow terms to an evaporator outlet side via evaporator tubes, a separator being integrated into the evaporator inlet chamber, in which separator a refrigerant which is expanded in an expansion member is divided as a two-phase liquid/vapour mixture into a vapour phase and into a liquid phase which is separate therefrom, the vapour phase being conducted via a bypass line to the evaporator outlet side, and the liquid phase being conducted counter to the direction of gravity into the evaporator tubes. The separator has a distributor tube which extends in the inlet chamber in the evaporator transverse direction.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: September 1, 2020
    Assignee: AUDI AG
    Inventors: Hans Hammer, Predrag Hrnjak, Andrew Musser, Stefan Elbel
  • Patent number: 10712104
    Abstract: A heat exchanger according to an embodiment of the invention includes a fin extending in the gravity direction and heat transfer pipes installed so as to intersect the fin. The heat transfer pipes are arranged in the gravity direction. The fin has a water guiding area disposed above and below each of the heat transfer pipes, and a water drainage area disposed adjacent to a side of each of the heat transfer pipes. The water guiding area has water guiding structures for guiding water to the water drainage area. The water drainage area has water drainage structures for guiding water in the gravity direction.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tsuyoshi Maeda, Akira Yatsuyanagi, Shin Nakamura
  • Patent number: 10655868
    Abstract: A controller for controlling a number of operating heat sources is provided. The controller detects a change in a number of secondary pumps that supply a heat transfer medium to a load device, determines the number of operating heat sources that changes as a load demand of the state of a load device changes, and switches the number of operating heat sources. The controller determines the number of operating heat sources when the change in the number of secondary pumps due to the change in the load demand is detected, and changes the number of heat sources for as long as at least one of a prescribed period has passed from a time when the change in the number of secondary pumps is detected or a prescribed condition with respect to a value that varies due to the change in the number of secondary pumps is satisfied.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: May 19, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Koki Tateishi, Satoshi Nikaido, Minoru Matsuo, Toshiaki Ouchi
  • Patent number: 10647179
    Abstract: In an air-conditioning apparatus of a so-called heat pump system, wasteful power consumption to be generated when an auxiliary heating means is disposed on an air upstream side of a radiator is decreased, and comfortable heating of a vehicle interior is also achieved. The air-conditioning apparatus includes an electric heater 57 disposed on an upstream side of air flowing through an air flow passage 3 to a radiator 4, and a controller executes a cooperative operation of heating air to be supplied to the vehicle interior by the electric heater 57 and the radiator 4, and stops a compressor 2 on the basis of establishment of a condition that an inlet refrigerant temperature Tcxin of the radiator is lower than an outlet refrigerant temperature TCI of the radiator (Tcxin<TCI).
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 12, 2020
    Assignee: SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORPORATION
    Inventors: Kenichi Suzuki, Ryo Miyakoshi, Kohei Yamashita
  • Patent number: 10648717
    Abstract: An accumulator connected to a compressor, the accumulator including a case that forms a space in which liquid refrigerant and gaseous refrigerant are accommodated, a suction pipe which is connected to the case, and at least one connection pipe which connects a side surface of the case and a suction side of the compressor, whereby a space between a side surface of the compressor and a side surface of the accumulator is less than a length of a portion of the connection pipe from the side surface of the compressor to the side surface of the accumulator.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: May 12, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sejin Ku, Hyungjin Park, Sangmyung Byun, Gyeongsu Jin
  • Patent number: 10619901
    Abstract: A heat exchanger, such as for example, a condenser coil constructed as a fin and microchannel tube is fluidly connected with a volume constructed and configured to store refrigerant in certain operations, such as for example during a pump down operation. The volume is fluidly connected to a fluid port of the heat exchanger, where the fluid port is an inlet (in the cooling mode) to the heat exchanger, such as the high side condensing section of the heat exchanger. The volume receives refrigerant exiting the heat exchanger from the fluid port in a mode other than a cooling mode, e.g., a pump down operation.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: April 14, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Jean Charles Mast, Jean-Michel Genay
  • Patent number: 10591227
    Abstract: A heat exchanger including a mixing and redistribution header (20) at one end of the heat exchanger; multiple heat exchange tubes (30) in communication with the mixing and redistribution header (20). An upper cavity (21) and a lower cavity (22) in communication with each other are disposed in the mixing and redistribution header (20); a fluid entering the heat exchanger first of all flows into a part of the lower cavity (22) of the mixing and redistribution header (20), then is collected and mixed in the upper cavity (21) of the mixing and redistribution header (20), and is distributed into another part of the lower cavity (22) and flows out through a heat exchange tube (30) in communication with the lower cavity, a cross-sectional area of the upper cavity (21) being equal to or greater than a cross-sectional area of the lower cavity (22).
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 17, 2020
    Assignee: Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd.
    Inventors: Xiangxun Lu, Jianlong Jiang, Jing Yang, Yubao Liu
  • Patent number: 10495331
    Abstract: An air conditioner includes: an outdoor unit; a plurality of indoor units respectively including indoor heat exchangers; expansion valves respectively provided to the plurality of indoor units, the expansion valves being configured to adjust flow rates of a refrigerant in the indoor heat exchangers; and a controller for executing a refrigerant amount balance control for adjusting opening degrees of the expansion valves so that operation state amounts, with which the indoor heat exchangers exert heat exchange amounts, of the plurality of indoor units become equal to each other.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 3, 2019
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Yasuhiro Oka, Takahiro Matsunaga, Takashi Kimura, Shigeaki Suyama, Kotaro Toya
  • Patent number: 10401063
    Abstract: There is disclosed herein a subsystem for a vapor-compression system having a compressor and a condenser. The subsystem includes a storage assembly fluidly communicable with a compressor inlet of the compressor for flow of refrigerant. The storage assembly is configured to receive and store refrigerant in a storing configuration, and release refrigerant stored therein to the compressor inlet of the compressor in a releasing configuration. The subsystem further includes a flow-directing assembly in fluid communication with the storage assembly for flow of refrigerant, and fluidly communicable with a condenser inlet of the condenser and a compressor outlet of the compressor for flow of refrigerant. The flow-directing assembly is configured to direct refrigerant from the compressor outlet to the storage assembly in a first flow configuration, and direct refrigerant from the compressor outlet to the condenser inlet in a second flow configuration.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: September 3, 2019
    Assignee: CRESSTEC RAC IP PTY. LTD.
    Inventor: Ian David Nankivell
  • Patent number: 10359121
    Abstract: A control valve includes a casing having an inlet port for a fluid, an axially rotatable valve accommodated in the casing and having a flow path communicating with the inlet port. An upstream outlet port and a downstream outlet port passing through the casing are formed at intervals in the casing. An upstream communication port and a downstream communication port, which respectively communicate between an inside of the flow path and the upstream outlet port and between the inside of the flow path and the downstream outlet port according to a rotational position of the valve are formed in the valve. A flowing direction changing portion for changing a flowing direction of the fluid in the flow passage is provided in a portion of the flow path which is located on a downstream side in relation to the upstream communication port in the flowing direction of the fluid.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: July 23, 2019
    Assignee: YAMADA MANUFACTURING CO., LTD.
    Inventor: Akifumi Ozeki
  • Patent number: 10337767
    Abstract: A multi-compartment transport refrigeration system (10) includes a first evaporator (40) having an first evaporator inlet coupled to a first evaporator expansion device (140) and a first evaporator outlet coupled to a compressor inlet path, the first evaporator for cooling a first compartment of a container at a first temperature; a second evaporator (609 having a second evaporator inlet coupled to a second evaporator expansion device (160) and a second evaporator outlet coupled to the compressor inlet path, the second evaporator for cooling a second compartment of the container at a second temperature greater than the first temperature; and a controller (550) for controlling the first evaporator expansion device in response to a first superheat setpoint and controlling the second evaporator expansion device in response to a second superheat setpoint, the controller adjusting the second superheat setpoint in response to the second temperature and the first temperature.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: July 2, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Raymond L. Senf, Jr., Wenhua Li
  • Patent number: 10301521
    Abstract: Disclosed are refrigerants comprising at least about 97% by weight of a blend of three compounds, said blend consisting of: from about 40% by weight to about 49% by weight difluoromethane (HFC-32), from about 6% by weight to about 12% by weight pentafluoroethane (HFC-125), from about 33% by weight to about 40% by weight trifluoroiodomethane (CF3I); and from about 2% by weight to about 12% by weight of trans 1,3,3,3-tetrafluoropropene (trans HFO-1234ze), wherein the percentages are based on the total weight of the three compounds in the blend, and systems and method using same.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: May 28, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ankit Sethi, Samuel F. Yana Motta, Gustavo Pottker, Gregory Laurence Smith, Elizabet del Carmen Vera Becerra, Yang Zou, Joshua Close
  • Patent number: 10254029
    Abstract: A refrigeration system, including: an electronic control unit, including a housing and an electronic device arranged in the housing; a refrigeration loop, including a compressor, a condenser, a primary throttling element, and an evaporator sequentially connected through a pipeline and forming a closed loop; and an electronic device cooling branch connected into the refrigeration loop from the condenser, and connected back to the refrigeration loop from the evaporator; the electronic device cooling branch including an electronic device cooling unit, a secondary throttling element, and an electromagnetic valve; and the electronic device cooling unit being arranged in the housing and spaced apart from the electronic device, for reducing the temperature and humidity of the electronic device and an environment in the housing.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: April 9, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Michael A. Stark, Lei Wang, Jianxin Huang, Chaoqun Yan
  • Patent number: 10253774
    Abstract: A compressor includes a closed container housing a compression element driven by the shaft of a motor. The compression element includes a first and second bearings supporting first and second shaft portions, and at least one cylinder having at least one cylinder chamber disposed between the first and second bearings. At least one roller is fitted to the shaft in the at least one cylinder chamber. The first bearing is disposed closer to the motor than the second bearing. The first and second bearings have first and second annular grooves opened to the at least one cylinder chamber and first and second elastic portions provided in first and second opposing surfaces, respectively. A diameter of the second shaft portion is smaller than a diameter of the first shaft portion. A rigidity of the second elastic portion is smaller than a rigidity of the first elastic portion.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: April 9, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Takehiro Kanayama, Naoto Tomioka, Yuuichirou Watanabe
  • Patent number: 10222086
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit including a compressor, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger connected to each other via refrigerant pipes. The outdoor heat exchanger includes a heat transfer pipe, and a plurality of fins. The outdoor heat exchanger is configured so that a ratio of a heat capacity of the plurality of fins to a total of heat capacities of the heat transfer pipe and the plurality of fins is not more than 50%. The refrigeration cycle apparatus has a mixed defrosting operation mode in which a hot gas defrosting operation and a reverse-defrosting operation are performed in sequence. In the hot gas defrosting operation, hot gas discharged from the compressor is supplied to the outdoor heat exchanger. In the reverse-defrosting operation, refrigerant passing through the indoor heat exchanger is supplied from the compressor to the outdoor heat exchanger.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Tashiro, Shin Nakamura
  • Patent number: 10222096
    Abstract: An isothermal turbo-compressor-condenser-expander (ITCCE) includes heat-transferring fan blades that are mounted on, or surround, individual conduits to promote air exchange and heat transfer. In operation, the open framework rotates in free air to promote heat exchange. An ITCCE bladed assembly includes a driven central hub assembly with a first fluid coupling. A first inner plenum is in fluid communication with the fluid coupling. A plurality of compressor multiport conduits extend radially, and pass fluid from, the first inner plenum to an outer plenum that acts as an equalizing line. A return path is provided to the fluid coupling from the outer plenum. The conduits can be formed as metal extrusions, including internal ribs that separate a plurality of ports formed therebetween along an entire length of the conduits. The conduits can define an airfoil shape and/or are axially twisted, generating axial airflow. The return path can include return multiport conduits.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 5, 2019
    Assignee: Appollo Wind Technologies LLC
    Inventors: Peter A. Swett, Randell B. Drane
  • Patent number: 10174641
    Abstract: A Rankine cycle system for a vehicle having a dual fluid circulation circuit includes a high temperature (HT) loop in which a HT working fluid is converted to steam by heat of exhaust gas discharged from an engine. The steam is condensed back into the liquid state of the HT working fluid. A Low Temperature (LT) loop in which a temperature of an LT working fluid converted to steam is increased so that power is generated while the LT working fluid cools the HT working fluid in the HT loop, and the steam is condensed back into the liquid state of the LT working fluid. An engine coolant circulation auxiliary line forming a circulation flow in which engine coolant heats the LT working fluid and is then returned to the engine after the engine coolant circulated in the engine is supplied to the LT loop.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 8, 2019
    Assignees: HYUNDAI MOTOR COMPANY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Dong-Won Park, Kyung-Wook Choi, Ki-Hyung Lee
  • Patent number: 10075105
    Abstract: A rotor for an LSIPM comprises a plurality of permanent magnets defining a number of poles (“P”) of the LSIPM, and a plurality of rotor bars spaced about the rotor defining a rotor bar area (“BA”). The rotor bars are formed of a conductive material having an associated conductivity (“?RB”). End members are disposed on axial opposite ends of the rotor core. The end members are in electrical contact with the rotor bars. The end members are formed from a material having an associated conductivity (“?EM”). Each end ring member has a minimum geometric cross sectional area (“ERA”) and outer diameter that generally corresponds to the rotor core outer diameter. The ERA is greater than 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (?RB/?EM).
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 11, 2018
    Assignee: Baldor Electric Company
    Inventors: Robert F. McElveen, Richard J. Budzynski
  • Patent number: 10047963
    Abstract: An indoor unit for an air-conditioning apparatus includes a case, an air-sending fan, and a heat exchanger unit. The heat exchanger unit includes a plurality of heat-transfer pipes extending in a vertical direction and forming a plurality of refrigerant passages in a width direction of the case and an air flow direction, and a plurality of headers connected to both ends of the plurality of heat-transfer pipes to allow the refrigerant to flow between the plurality of heat-transfer pipes. The plurality of headers include a plurality of division headers dividing and connecting the plurality of heat-transfer pipes arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction, and a return header connecting and turning back the plurality of divided refrigerant passages arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: August 14, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuki Ugajin, Hideaki Maeyama, Akira Ishibashi
  • Patent number: 10041712
    Abstract: A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 7, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Masanori Ishikawa, Eiji Ishii, Sachio Sekiya, Shigeyuki Sasaki
  • Patent number: 10001116
    Abstract: In a sealed compressor, electrically-operated element (104) and compressive element (106) driven by electrically-operated element (104) are housed in the inside of sealed container (102). Compressive element (106) includes shaft (126) formed of main shaft (136) and eccentric shaft (134), and cylinder block (128) having; bearing (144) which pivotally supports main shaft (136) of shaft (126); and cylinder (142). Further, the compressive element (106) includes piston (130) which is movable in the cylinder (142) in a reciprocating manner, and connecting portion (132) which connects eccentric shaft (134) and piston (130) to each other. Electrically-operated element (104) is formed of an outer-rotor-type motor which includes stator (150), and rotor (152) which is disposed coaxially with stator (150) so as to surround an outer periphery of stator (150).
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 19, 2018
    Assignee: PANASONIC CORPORATION
    Inventor: Seigo Yanase
  • Patent number: 9982180
    Abstract: Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) HFC-32; (b) HFC-125; (c) HFO-1234ze, HFO-1234yf and combinations of these; and (d) optionally HFC-134a.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 29, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Gustavo Pottker, Mark W. Spatz, Samuel F. Yana Motta
  • Patent number: 9969241
    Abstract: A heat exchanger air control system is provided that utilizes a central heat exchanger and a pair of side-mounted heat exchangers, where the side-mounted heat exchangers are positioned forward of the central heat exchanger. The air outlets of the side-mounted heat exchangers are coupled to both the air inlet and the air outlet of the central heat exchanger using several air ducts through which air flow is controlled, thus allowing air flow throughout the system to be optimized based on the needs of the thermal systems coupled to the heat exchangers. A single fan proximate to the outlet of the central heat exchanger can be used to draw air through any combination of the three heat exchangers.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 15, 2018
    Assignee: ATIEVA, INC.
    Inventor: Graham Lloyd Feltham
  • Patent number: 9943211
    Abstract: A dish treating appliance for treating dishes according to a cycle of operation can include a tub defining a treating chamber. The treating chamber can fluidly couple to condenser having an inlet, an outlet, and a condensing passage. The condenser can further include multiple ambient air inlets to mix humid air drawn from the treating chamber with ambient air within the condenser. The condenser can further integrate a water inlet with a condenser outlet, such that a water supply and condensed liquid can be provided to the treating chamber through the same opening.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: April 17, 2018
    Assignee: Whirlpool Corporation
    Inventors: Alvaro Vallejo Noriega, Subhash N. Varvate, Patrick J. Duffy, Gautam P. Kamat, Thomas M. DeLellis