Jet Powered By Circuit Fluid Patents (Class 62/500)
  • Patent number: 10603985
    Abstract: A refrigerant that has flowed out of a liquid ejector radiates heat in a radiator, and a liquid-phase refrigerant that has radiated heat in the radiator flows into an ejection refrigerant passage of the liquid ejector. A discharged refrigerant of a compressor that suctions the refrigerant that has flowed out of a low-pressure evaporator flows into an inflow refrigerant passage of the liquid ejector. An ejector adopted as the liquid ejector is one in which an ejection refrigerant is ejected from the ejection refrigerant passage to a gas-liquid mixing portion, and the ejection refrigerant is ejected on an outer circumferential side of the inflow refrigerant flowing from the inflow refrigerant passage into the gas-liquid mixing portion.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: March 31, 2020
    Assignee: DENSO CORPORATION
    Inventors: Haruyuki Nishijima, Gouta Ogata, Yoshiaki Takano
  • Patent number: 10533783
    Abstract: An air conditioner including an outdoor device that includes a bypass path connecting a discharge side of the compressor and a suction side of the compressor, an on-off valve configured to open/close the bypass path, and a control device configured to control the compressor, the decompression device, and the on-off valve. The control device opens the on-off valve in a state in which the compressor is stopped to execute such bypass opening that refrigerant circulates, through the bypass path, from the discharge side of the compressor in a refrigerant storage state in which refrigerant is stored to the suction side of the compressor in a substantially vacuum state, and evaluates a volume of the pipe.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: January 14, 2020
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Jun Xue, Koji Naito, Atsuhiko Yokozeki
  • Patent number: 10527329
    Abstract: In an ejector-type refrigeration cycle device provided with a first compression mechanism and a second compression mechanism, a refrigerant outlet of a suction side evaporator is coupled to a refrigerant suction port of the ejector, and a second compression mechanism is provided between the suction side evaporator and the refrigerant suction port of the ejector. Thus, even in an operation condition in which suction capacity of the ejector is decreased in accordance with a decrease of the flow amount of a drive flow of the ejector, the suction capacity of the ejector can be supplemented by the operation of the second compression mechanism. Accordingly, even when a variation in the flow amount of the drive flow is caused, the ejector-type refrigeration cycle device can be stably operated.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: January 7, 2020
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Oshitani, Kenichi Fujiwara, Haruyuki Nishijima, Etsuhisa Yamada, Tooru Ikemoto, Youhei Nagano
  • Patent number: 10442274
    Abstract: An ejector refrigeration cycle device includes: a radiator that dissipates heat from a refrigerant discharged from a compressor; an ejector module that decompresses the refrigerant cooled by the radiator; and an evaporator that evaporates a liquid-phase refrigerant separated in a gas-liquid separation space of the ejector module. A grille shutter is disposed as an inflow-pressure increasing portion between the radiator and a cooling fan blowing the outside air toward the radiator. The grille shutter is operated to decrease the volume of the outside air to be blown toward the radiator when an outside air temperature is equal to or lower than a reference outside air temperature, thereby increasing the pressure of the inflow refrigerant to flow into a nozzle passage of the ejector module.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 15, 2019
    Assignee: DENSO CORPORATION
    Inventors: Toshiyuki Tashiro, Masahiro Yamada, Makoto Kume, Haruyuki Nishijima, Youhei Nagano, Yoshiyuki Yokoyama, Yoshinori Araki
  • Patent number: 10352592
    Abstract: A vapor compression system (200; 300; 400) has: a compressor (22); a first heat exchanger (30); a second heat exchanger (64); an ejector (38); separator (48); and an expansion device (70). A plurality of conduits are positioned to define a first flowpath sequentially through: the compressor; the first heat exchanger; the ejector from a motive flow inlet through (40) an outlet (44); and the separator, and then branching into: a first branch returning to the compressor; and a second branch passing through the expansion device and second heat exchanger to a secondary flow inlet (42). The plurality of conduits are positioned to define a bypass flowpath (202; 302; 402) bypassing the motive flow inlet and rejoining the first flowpath at essentially separator pressure but away from the separator.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 16, 2019
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Zuojun Shi, Hans-Joachim Huff, Parmesh Verma, Thomas D. Radcliff, Frederick J. Cogswell, Jinliang Wang, Hongsheng Liu
  • Patent number: 10344777
    Abstract: In an ejector, formed in a body is a swirling space which lets a high-pressure refrigerant flowing from a refrigerant inlet port swirl and introduces the swirling high-pressure refrigerant into a depressurizing space in which the swirled high-pressure refrigerant is depressurized and expanded. A passage formation member that defines a nozzle passage and a diffuser passage is shaped to have a cross-sectional area increasing with distance from the depressurizing space. Further, a temperature sensing unit of a drive device that displaces the passage formation member is housed in the body, and the temperature sensing unit and a diaphragm have annular shapes to surround at least the axial line of the passage formation member.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Eitaro Tanaka, Toru Takahashi, Satoshi Inoue, Haruyuki Nishijima, Etsuhisa Yamada, Yoichiro Kawamoto
  • Patent number: 10323863
    Abstract: An ejector refrigeration circuit, which is configured for circulating a refrigerant, includes at least two controllable ejectors, which are connected in parallel and respectively comprise a primary high pressure input port, a secondary low pressure input port and an output port; and a control unit, which is configured for operating the ejector refrigeration circuit employing a method which includes a) operating a first ejector by controlling the opening of its high pressure port until the maximum efficiency of said first ejector has been reached or the actual refrigeration demands are met; b) operating at least one additional ejector by opening its primary high pressure input port for increasing the refrigeration capacity of the ejector refrigeration circuit in case the actual refrigeration demands are not met by operating the first ejector alone.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: June 18, 2019
    Assignee: CARRIER KĂ„LTETECHNIK DEUTSCHLAND GMBH
    Inventors: Jan Siegert, Heinz Gassen
  • Patent number: 10316865
    Abstract: An ejector has a nozzle, a body, a passage defining member and a drive portion. The body has a refrigerant suction port and a pressure increasing portion. A nozzle passage is defined between an inner surface of the nozzle and an outer surface of the passage defining member and has a minimum sectional area portion, a tapered portion, and an expansion portion. The minimum sectional area portion has a smallest passage sectional area. The tapered portion is located upstream of the minimum sectional area portion in a refrigerant flow direction and has a passage sectional area decreasing toward the minimum sectional area portion gradually. The expansion portion is located downstream of the minimum sectional area portion in the refrigerant flow direction and has a passage sectional area increasing gradually. The passage defining member has a groove that is recessed to increase the passage sectional area of the nozzle passage.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: June 11, 2019
    Assignee: DENSO CORPORATION
    Inventors: Yoshiyuki Yokoyama, Haruyuki Nishijima, Etsuhisa Yamada, Ryota Nakashima, Yoshiaki Takano, Kazunori Mizutori, Yorito Kohara, Hiroshi Shintani
  • Patent number: 10233785
    Abstract: In a steam turbine power generation system according to the present invention, a regenerator and an ejector are selectively operated according to outdoor air temperature so that the effects of the outdoor air temperature can be minimized and thus an increase in back pressure of a turbine is prevented and thus the operating efficiency of the steam turbine power generation system can be guaranteed. In addition, when the outdoor air temperature is lower than a set temperature, only a steam condenser and an air cooling condenser are used, and when the outdoor air temperature is equal to or higher than the set temperature, the regenerator and the ejector are operated so that the condensation efficiency of the air cooling condenser is improved and thus the cooling efficiency of the steam turbine power generation system can be maximized.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 19, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong Lee, Beom Joon Lee, Chul Woo Roh, Ho Sang Ra, Young Jin Baik
  • Patent number: 10131203
    Abstract: An ejector draws a refrigerant on a downstream side of an exterior heat exchanger serving as an evaporator, from a refrigerant suction port by a suction effect of an injection refrigerant injected from a nozzle portion for decompressing a part of the refrigerant discharged from a compressor, and mixes the injection refrigerant with the suction refrigerant to pressurize the mixed refrigerant at a diffuser. The refrigerant flowing out of the diffuser is drawn into the compressor. In this way, the density of the refrigerant drawn into the compressor can be increased, thereby suppressing reduction in flow amount of the refrigerant flowing into an interior condenser serving as a radiator. Thus, even if the temperature of the outside air (heat-absorption target fluid) is decreased, the interior condenser is prevented from degrading its heating capacity for the ventilation air (heating target fluid).
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: November 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Tatsuhiro Suzuki, Gouta Ogata, Yuichi Shirota
  • Patent number: 10113776
    Abstract: A packaged terminal air conditioner unit is provided. The packaged terminal air conditioner unit includes a casing. A compressor, an interior coil, an exterior coil and a reversing valve are positioned within the casing. The reversing valve is configured for selectively reversing a flow direction of compressed refrigerant from the compressor. The packaged terminal air conditioner also includes at least one ejector for combining a stream of refrigerant from a primary loop with a stream of refrigerant from an auxiliary cooling loop, thereby improving system efficiency.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 30, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Gunaranjan Chaudhry, Brent Alden Junge
  • Patent number: 10094577
    Abstract: The present disclosure provides a solar energy system that comprises a solar collector for providing energy generated from incident solar radiation. The solar energy system also comprises a first heat exchange system that has an ejector that is arranged to operate using at least a portion of the energy provided by the solar energy collector. Further, the solar energy system comprises a second heat exchange system arranged to operate using energy from an energy source other than a solar energy source. The solar energy system is arranged for transfer of thermal energy between the first heat exchange system and a region, and between the second heat exchange system and the region. The solar energy system is arranged to control a relative contribution of the first and second heat exchange systems to the transfer of the thermal energy.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: October 9, 2018
    Assignee: Endless Solar Corporation Ltd
    Inventor: Michael Dennis
  • Patent number: 10018386
    Abstract: A swirl space forming member that forms a swirl space in which a refrigerant flowing into a nozzle portion of an ejector swirls around an axis of the nozzle portion. In this way, even when the refrigerant flowing out of a first evaporator is a gas-phase refrigerant, pressure of the refrigerant on a swirling center axis side in the swirl space is reduced to be able to start condensation by swirling the refrigerant, and a gas-liquid two-phase refrigerant in which a condensation nucleus is generated can flow into the nozzle portion. Thus, occurrence of a condensation delay in the refrigerant in the nozzle portion can be restricted.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: July 10, 2018
    Assignee: DENSO CORPORATION
    Inventors: Haruyuki Nishijima, Kenta Kayano, Yoshiaki Takano
  • Patent number: 9989074
    Abstract: A mixing portion that is formed in an area from a refrigerant injection port of a nozzle portion to an inlet section of a diffuser portion in an internal space of a body portion of an ejector, that mixes an injection refrigerant injected from the refrigerant injection port and a suction refrigerant suctioned from a refrigerant suction port is provided. A distance from the refrigerant injection port to the inlet section in the mixing portion is determined such that a flow velocity of the refrigerant flowing into the inlet section of the diffuser portion becomes lower than or equal to a two-phase sound velocity. A shock wave that is generated at a time that a mixed refrigerant is shifted from a supersonic velocity state to a subsonic velocity state is generated in the mixing portion.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: June 5, 2018
    Assignee: DENSO CORPORATION
    Inventors: Haruyuki Nishijima, Kenta Kayano, Yoshiaki Takano
  • Patent number: 9982924
    Abstract: An ejector includes an atomization mechanism that is disposed at an end of a first nozzle and that atomizes a working fluid in a liquid phase while maintaining the liquid phase. The atomization mechanism includes an orifice and a collision plate. When the collision plate is orthographically projected onto a projection plane, in a projection of the collision plate, at least one point on a contour of the collision surface is disposed closer to a reference point than a second reference line, which is a line including the collision end point and perpendicular to the first reference line.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: May 29, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Bunki Kawano, Tomoichiro Tamura
  • Patent number: 9897363
    Abstract: The present application provides a carbon dioxide based refrigeration system. The carbon dioxide based refrigeration system may include a mid temperature cycle with a mid temperature ejector, a low temperature cycle with a low temperature ejector, and a gas cooler/condenser in communication with the mid temperature cycle and the low temperature cycle.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: February 20, 2018
    Assignee: Heatcraft Refrigeration Products LLC
    Inventor: Augusto J. Pereira Zimmermann
  • Patent number: 9857101
    Abstract: A system (170) has a compressor (22). A heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. A non-controlled ejector (38) has a primary inlet coupled to the heat rejection exchanger to receive refrigerant, a secondary inlet, and an outlet. The system includes means (172, e.g., a nozzle) for causing a supercritical-to-subcritical transition upstream of the ejector.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: January 2, 2018
    Assignee: Carrier Corporation
    Inventors: Thomas D. Radcliff, Parmesh Verma, Jinliang Wang, Frederick J. Cogswell
  • Patent number: 9759462
    Abstract: A system has a compressor, a heat rejection heat exchanger, first and second ejectors, first and second heat absorption heat exchangers, and a separator. The ejectors each have a primary inlet coupled to the heat rejection exchanger to receive refrigerant. A second heat absorption heat exchanger is coupled to the outlet of the second ejector to receive refrigerant. The separator has an inlet coupled to the outlet of the first ejector to receive refrigerant from the first ejector. The separator has a gas outlet coupled to the secondary inlet of the second ejector to deliver refrigerant to the second ejector. The separator has a liquid outlet coupled to the secondary inlet of the first ejector via the first heat absorption heat exchanger to deliver refrigerant to the first ejector.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: September 12, 2017
    Assignee: Carrier Corporation
    Inventors: Jiang Zou, Hongsheng Liu, Parmesh Verma, Thomas D. Radcliff, Jinliang Wang
  • Patent number: 9738133
    Abstract: A refrigeration cycle device includes an air heat exchanger that heats air to be blown into an interior of a vehicle compartment using refrigerant discharged from a compressor, a high-stage side expansion valve decompressing the refrigerant flowing out of the air heat exchanger, and a battery heat exchanger that heats air to be blown to a battery using the refrigerant decompressed by the high-stage side expansion valve. In an air heating-warming up mode of heating the air for the interior and the air for the battery, a refrigerant discharge capacity of the compressor is controlled such that an air temperature for the interior approaches a target air temperature, and an opening degree of the high-stage side expansion valve is controlled such that a battery temperature becomes within a predetermined reference temperature range. A selector switch allows a passenger to select which operation of air conditioning or warming-up is prioritized.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 22, 2017
    Assignee: DENSO CORPORATION
    Inventors: Seiji Inoue, Masayuki Takeuchi, Takashi Yamanaka
  • Patent number: 9719529
    Abstract: Devices, systems, and methods for variable flow rate fuel ejection are disclosed. A variable flow rate ejector comprises primary and secondary inlets, primary and secondary nozzles, and a needle. The primary nozzle is connected to receive a first fluid from the first inlet chamber and transmit the first fluid through a primary nozzle opening. The needle is disposed within the primary nozzle opening and is axially movable to vary an area of primary nozzle opening. The primary nozzle opening and the needle are sized to make the flow of the first fluid have a supersonic speed. The secondary inlet opens into a second inlet chamber positioned outside the primary nozzle opening. A portion of the second fluid is entrained in the flow of the first fluid from the primary nozzle. The secondary nozzle opening is sized to make the flow of the first and second fluids have a subsonic speed.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: August 1, 2017
    Assignee: University of Delaware
    Inventors: Douglas Brunner, Manish W. Bajpai, John Adam C. Kinzey, Shane Marcks, Ajay K. Prasad, Suresh G. Advani
  • Patent number: 9625191
    Abstract: The condensing apparatus 71 includes: a compressor 10 which has a compression part 20 compressing a working fluid; a condenser 13 which condenses the working fluid compressed by the compression part 20; and a spray mechanism 81 including a nozzle 82 which sprays a cooling fluid into a fluid passage 91 to cool the working fluid flowing through the fluid passage 91 between a discharge opening CS2 of the compression part 20 and an inlet 13a of the condenser 13.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 18, 2017
    Assignees: Tokyo Electric Power Company, Incorporated, Chubu Electric Power Company, Incorporated, THE KANSAI ELECTRIC POWER CO., INC., Kobe Steel, Ltd., DANISH TECHNOLOGICAL INSTITUTE, JOHNSON CONTROLS DENMARK APS
    Inventors: Ryo Fujisawa, Masatake Toshima, Yoshihiro Nakayama, Yoshitaka Baba, Satoshi Ide, Koichiro Iizuka, Kunihiko Suto, Hiroshi Egawa, Ichirou Sakuraba, Daisuke Hayashi, Keiji Sugano, Hans Madsboll, Klaus Damgaard Kristensen
  • Patent number: 9464826
    Abstract: A hybrid system including an absorption heat pump and a compression chiller is provided. The absorption heat pump includes a generator, a first condenser, a first evaporator and an absorber connected in series. A first refrigerant is cooled by the first condenser and releases a first heat capacity, evaporated in the first evaporator and receives a second heat capacity, and mixed with a sorbent in the absorber and releases a third heat capacity. The compression chiller includes a compressor, a condensing module and a second evaporator connected in series. A second refrigerant is cooled by the condensing module and releases the second heat capacity, and evaporated in the second evaporator and receives a fourth heat capacity, wherein the condensing module is connected to the first evaporator, so that the second heat capacity released by the second refrigerant is transmitted to the first refrigerant in the first evaporator.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 11, 2016
    Inventor: Jen-Huang Tsai
  • Patent number: 9453668
    Abstract: In a refrigeration cycle apparatus, a compressor, a condenser, a first flow control valve, a refrigerant storage container, a second flow control valve, and a first evaporator are connected in this order, and a third flow control valve, an ejector, a second evaporator, and the compressor are connected in this order so as to branch from an outlet of the condenser. A driving refrigerant inlet of the ejector is connected to the third flow control valve, a suction refrigerant inlet of the ejector is connected to an outlet of the first evaporator, and a mixed refrigerant outlet of the ejector is connected to a refrigerant inlet of the second evaporator. The refrigeration cycle apparatus has a bypass circuit which branches from a refrigerant pipe connecting the condenser and the second flow control valve and is connected to the mixed refrigerant outlet of the ejector via a fourth flow control valve.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 27, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinya Higashiiue, So Nomoto
  • Patent number: 9372014
    Abstract: An ejector-type refrigeration cycle device is provided with a first ejector (15) which draws refrigerant from a refrigerant suction port (15b, 24b) by using a high-speed refrigerant flow jetted from a nozzle part (15a, 24a), and a first suction-side evaporator (19) connected to the refrigerant suction port (15b) of the first ejector (15), and a second suction-side evaporator (27) connected to a refrigerant suction port (24b) of a second ejector (24). A flow amount of the refrigerant in the second ejector (24) is smaller than a flow amount of the refrigerant in the first ejector (15). The refrigerant branched at a branch part (Z2) that is positioned on a downstream refrigerant side of a radiator (13) and on an upstream refrigerant side of the first ejector (15) flows into the second ejector (24), and the refrigerant branched on a downstream refrigerant side of the second ejector (24) flows into the second suction-side evaporator (27).
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: June 21, 2016
    Assignee: DENSO CORPORATION
    Inventors: Youhei Nagano, Mika Gocho, Yoshiaki Takano, Etsuhisa Yamada, Kazunori Mizutori
  • Patent number: 9261298
    Abstract: A system has a compressor (22, 412). A heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. The system has a heat absorption heat exchanger (64). The system includes a separator (170) comprising a vessel having an interior. The separator has an inlet, a first outlet, and a second outlet. An inlet conduit may extend from the inlet and may have the conduit outlet positioned to discharge an inlet flow into the vessel interior to cause the inlet flow to hit a wall before passing to a liquid refrigerant accumulation in the vessel.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: February 16, 2016
    Assignee: Carrier Corporation
    Inventors: Jinliang Wang, Parmesh Verma, David P. Martin, Frederick J. Cogswell
  • Patent number: 8991201
    Abstract: An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator that evaporates refrigerant flowing out of the ejector, a throttling unit located in a branch passage and depressurizes refrigerant to adjust a flow rate of refrigerant, and a second evaporator located downstream of the throttling unit. In the ejector cycle system, a flow ratio adjusting means adjusts a flow ratio between a first refrigerant flow amount depressurized and expanded in a nozzle portion of the ejector and a second refrigerant flow amount drawn into a refrigerant suction port of the ejector, based on a physical quantity related to at least one of a state of refrigerant in the refrigerant cycle, a temperature of a space to be cooled by the first and second evaporators, and an ambient temperature of the space.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: March 31, 2015
    Assignee: Denso Corporation
    Inventors: Makoto Ikegami, Hiroshi Oshitani, Etsuhisa Yamada, Naohisa Ishizaka, Hirotsugu Takeuchi, Takeyuki Sugiura, Takuo Maehara
  • Patent number: 8978399
    Abstract: A heat pumping unit includes a first heat exchanger, a second heat exchanger and a pump. An outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector. A liquid outlet of the ejector is connected to an inlet of the second heat exchanger. An outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger. The pump outlet is connected to the liquid-jet ejector liquid inlet.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: March 17, 2015
    Inventor: Serguei A. Popov
  • Patent number: 8973394
    Abstract: In an evaporator unit, a first evaporator is coupled to an ejector to evaporate refrigerant flowing out of the ejector, a second evaporator is coupled to a refrigerant suction port of the ejector to evaporate the refrigerant to be drawn into the refrigerant suction port, a flow amount distributor is located to adjust a flow amount of the refrigerant distributed to the nozzle portion and a flow amount of the refrigerant distributed to the second evaporator, and a throttle mechanism is provided between the flow amount distributor and the second evaporator to decompress the refrigerant flowing into the second evaporator. The flow amount distributor is adapted as a gas-liquid separation portion and as a refrigerant distribution portion for distributing separated refrigerant into the nozzle portion and the second evaporator. Furthermore, the flow amount distributor and the ejector are arranged in line in a longitudinal direction of the ejector.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: March 10, 2015
    Assignee: Denso Corporation
    Inventors: Etsuhisa Yamada, Haruyuki Nishijima, Tomohiko Nakamura, Gouta Ogata, Hiroshi Oshitani, Ryoko Awa, Tatsuhiko Nishino, Mika Gocho
  • Publication number: 20150052928
    Abstract: A cooling system includes: a compressor; a first condenser; a cooling portion; a heat exchanger; a first line; a second line; a switching device; and an ejector. The first line forms a vapor compression refrigeration cycle by flowing refrigerant in order of the heat exchanger, the compressor, the first condenser and the cooling portion. The second line forms a heat pipe by circulating refrigerant between the first condenser and the cooling portion. The switching device flows refrigerant through the first line when air conditioning is performed, and flows refrigerant through the second line when air conditioning is stopped. The ejector is configured to, when refrigerant flows from the compressor to the first condenser via the ejector, draw refrigerant from the second line and join the drawn refrigerant into refrigerant from the compressor.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhide Uchida, Yuichi Ohnu, Yoshiaki Kawakami
  • Patent number: 8955343
    Abstract: A system has a compressor. A heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. An ejector has a primary inlet coupled with heat rejection heat exchanger to receive refrigerant, a secondary inlet, and an outlet. The system has a heat absorption heat exchanger. The system includes means for providing at least of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: February 17, 2015
    Assignee: Carrier Corporation
    Inventors: Parmesh Verma, Jinliang Wang, Frederick J. Cogswell, Hans-Joachim Huff, Alexander Lifson, Richard G. Lord
  • Publication number: 20150033790
    Abstract: An ejector includes a body member having a depressurizing space that depressurizes a refrigerant which flows out of a swirling space that swirls the refrigerant, a suction passage that draws the refrigerant from an external, and a pressurizing space that mixes a refrigerant jetted from the depressurizing space with a refrigerant drawn from the suction passage and pressurizes the mixed refrigerant, and a conical passage formation member arranged in the depressurizing space and in the pressurizing space. A nozzle passage is formed of a refrigerant passage between an inner peripheral surface of the depressurizing space and an outer peripheral surface of the passage formation member, and a diffuser passage is formed of a refrigerant passage between an inner peripheral surface of a portion that defines the pressurizing space and an outer peripheral surface of the passage formation member.
    Type: Application
    Filed: January 29, 2013
    Publication date: February 5, 2015
    Applicant: DENSO CORPORATION
    Inventors: Etsuhisa Yamada, Haruyuki Nishijima, Tatsuhiro Suzuki, Yoshiaki Takano, Hideya Matsui, Yoshiyuki Yokoyama
  • Publication number: 20150033777
    Abstract: A heat pump for heating a vehicle interior includes a compressor arranged in a heat-pump circuit of a working medium, a condenser, a throttle valve and an evaporator. Gaseous working medium is compressed in the compressor. The compressor outlet is connected to the inlet of the condenser in which the working medium condenses, at the same time discharging heat, the heat being delivered as useful heat directly or indirectly to a consumer. The condenser is followed by a jet pump, to which the liquid working medium coming from the condenser is delivered as driving medium and to which the gaseous working medium flowing out from the evaporator is delivered as suction medium, in such a way that the driving medium and suction medium are compressed in the jet pump as a two-phase mixture. The jet-pump outlet is connected to the inlet of a separator, to which the two-phase mixture is delivered and in which the gaseous working medium is separated from the liquid working medium.
    Type: Application
    Filed: July 21, 2014
    Publication date: February 5, 2015
    Inventor: Alexander SCHYDLO
  • Publication number: 20150033791
    Abstract: An ejector includes a swirl flow channel that is arranged on an upstream side of a nozzle portion. The swirl flow channel swirls the high pressure refrigerant and allows the refrigerant in a state of a gas-liquid mixed phase to flow into the nozzle portion. The ejector further includes a flow-rate changeable mechanism that is disposed at the upstream side of the swirl flow channel, and is capable of changing a flow rate of the high pressure refrigerant that flows into the swirl flow channel. Accordingly, a nozzle efficiency can be improved, and an operation according to a load of the refrigeration cycle is possible.
    Type: Application
    Filed: February 21, 2013
    Publication date: February 5, 2015
    Inventors: Etsuhisa Yamada, Haruyuki Nishijima, Yoshiaki Takano
  • Patent number: 8943854
    Abstract: Disclosed is a heat exchanger of a plate type comprising an evaporator having at least one inlet and at least one outlet allowing a first medium to enter into and exit from the evaporator. The evaporator comprises a plurality of interconnected evaporation chambers disposed in parallel, having at least one common inlet and at least one common outlet allowing the first medium to enter into and exit from the evaporation chambers.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: February 3, 2015
    Assignee: Danfoss Qinbao (Hangzhou) Plate Heat Exchanger Company Limited
    Inventor: Lars Persson
  • Patent number: 8935928
    Abstract: An integrated power and refrigeration system is disclosed that includes a first subsystem configured to provide cooling air using a reverse-Brayton cycle using compressed air and a second subsystem configured to provide power by accepting a first portion of the compressed air from the first subsystem, heating the accepted first portion of the compressed air to form hot compressed air, and using the hot compressed air to drive a turbine that is coupled to a power generator.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: January 20, 2015
    Assignee: Lockheed Martin Corporation
    Inventor: Frank Mills
  • Publication number: 20150013360
    Abstract: A coaxial economizer for use in a chiller system comprising an inner housing and an outer housing having a common longitudinal axis. The outer housing has an inlet for receiving a fluid from a upstream compressor stage of a multistage compressor and an outlet for conveying a fluid to a downstream compressor stage of a multistage compressor. A flow chamber forms a fluid flow path about the inner housing. A flash chamber is coterminous with the flow chamber and flashes fluid in a liquid state to a gas state. A flow passage between said flash chamber and the flow chamber for conveying a flashed gas from the flash chamber to the flow chamber; wherein the flashed gas conveyed from the flash chamber and the fluid received from the inlet of the outer housing mix along the fluid flow path toward the outlet of the outer housing.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Paul F. Haley, Dennis R. Dorman, Frederic Byron Hamm, David M. Foye, James A. Kwiatkowski, Rick T. James, Randall L. Janssen, William J. Plzak
  • Publication number: 20140345318
    Abstract: An ejector-type refrigeration cycle device is provided with a first ejector (15) which draws refrigerant from a refrigerant suction port (15b, 24b) by using a high-speed refrigerant flow jetted from a nozzle part (15a, 24a), and a first suction-side evaporator (19) connected to the refrigerant suction port (15b) of the first ejector (15), and a second suction-side evaporator (27) connected to a refrigerant suction port (24b) of a second ejector (24). A flow amount of the refrigerant in the second ejector (24) is smaller than a flow amount of the refrigerant in the first ejector (15). The refrigerant branched at a branch part (Z2) that is positioned on a downstream refrigerant side of a radiator (13) and on an upstream refrigerant side of the first ejector (15) flows into the second ejector (24), and the refrigerant branched on a downstream refrigerant side of the second ejector (24) flows into the second suction-side evaporator (27).
    Type: Application
    Filed: November 15, 2012
    Publication date: November 27, 2014
    Applicant: DENSO CORPORATION
    Inventors: Youhei Nagano, Mika Gocho, Yoshiaki Takano, Etsuhisa Yamada, Kazunori Mizutori
  • Patent number: 8887525
    Abstract: A heat exchanger may be associated with a heat transfer system to promote flow of heat energy from a heat source to a multi-phase fluid. The heat exchanger may be associated with an expansion portion. The fluid may be a refrigerant to which nano-particles may be added. Embodiments of the present invention may be implemented in an air-conditioning system as well as a water heating system.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: November 18, 2014
    Assignee: Pax Scientific, Inc.
    Inventors: Jayden David Harman, Thomas Gielda
  • Patent number: 8820114
    Abstract: Disclosed herein is a cooling system that utilizes a supersonic cooling cycle. The cooling system includes accelerating a compressible working fluid, and may not require the use of a conventional mechanical pump. The cooling system accelerates the fluid to a velocity equal to or greater than the speed of sound in the compressible fluid selected to be used in the system. A phase change of the fluid due at least in part to a pressure differential cools a working fluid that may be utilized to transfer heat from a heat intensive system.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: September 2, 2014
    Assignee: PAX Scientific, Inc.
    Inventors: Serguei Charamko, Kristian Debus, Tom Gielda
  • Patent number: 8806889
    Abstract: A refrigerating cycle unit includes an ejector and a heat exchanger defined by layering a plurality of plates. Each of the plates has a refrigerant passage, and the refrigerant passages are connected by a header tank in a layering direction of the plates. At least two of the plates are fix plates having a fix portion to fix the ejector, and a communication portion through which the ejector and the header tank communicate with each other. The ejector is arranged between the fix portions of the fix plates in the layering direction, so as to be integrated with the heat exchanger.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: August 19, 2014
    Assignee: Denso Corporation
    Inventors: Aun Ota, Tomohiko Nakamura, Hideaki Sato
  • Patent number: 8783060
    Abstract: A flow of refrigerant discharged from a first compressor and cooled by a radiator is branched by a first branch portion, and the branched refrigerant of one side is decompressed and expanded by a thermal expansion valve and is heat exchanged with the branched refrigerant of the other side in an inner heat exchanger. Therefore, the branched refrigerant of the other side supplied to the suction side evaporator and a nozzle portion of an ejector can be cooled, thereby improving COP. Furthermore, a suction port of a second compressor is coupled to an outlet side of the ejector so as to secure a drive flow of the ejector, and the refrigerant discharged from the second compressor and the refrigerant downstream of the thermal expansion valve are mixed to be drawn into the first compressor so that an ejector-type refrigerant cycle device can be operated stably.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: July 22, 2014
    Assignee: Denso Corporation
    Inventors: Haruyuki Nishijima, Etsuhisa Yamada, Youhei Nagano, Masami Taniguchi
  • Publication number: 20140196494
    Abstract: A heat pumping unit includes a first heat exchanger, a second heat exchanger and a pump. An outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector. A liquid outlet of the ejector is connected to an inlet of the second heat exchanger. An outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger. The pump outlet is connected to the liquid-jet ejector liquid inlet.
    Type: Application
    Filed: January 14, 2013
    Publication date: July 17, 2014
    Inventor: Serguei A. Popov
  • Patent number: 8776539
    Abstract: A system has first and second compressors (22, 180), a heat rejection heat exchanger (30), an ejector (38), a heat absorption heat exchanger (64), and a separator (48). The heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. The ejector (38) has a primary inlet (40) coupled to the heat rejection exchanger (30) to receive refrigerant, a secondary inlet (42), and an outlet (44). The separator (48) has an inlet coupled to the outlet of the ejector to receive refrigerant from the ejector. The separator has a gas outlet (54) coupled to the compressor (22) to return refrigerant to the first compressor. The separator has a liquid outlet (52) coupled to the secondary inlet of the ejector to deliver refrigerant to the ejector (38). The heat absorption heat exchanger (64) is coupled to the liquid outlet of the separator to receive refrigerant. The second compressor (180) is between the separator and the ejector secondary inlet.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: July 15, 2014
    Assignee: Carrier Corporation
    Inventors: Parmesh Verma, Jinliang Wang
  • Patent number: 8756954
    Abstract: A turbo compressor is provided with a first compression stage that draws in and compresses a fluid, and a second compression stage connected to the first compression stage via a rotation shaft, that further compresses the compressed fluid from the first compression stage. The first compression stage and the second compression stage are arranged adjacent to each other with their backsides facing each other. A discharge port of the first compression stage, and a suction port of the second compression stage are formed in the same plane, and there is provided a U-shaped pipe that connects the first discharge port and the second suction port.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: June 24, 2014
    Assignee: IHI Corporation
    Inventors: Minoru Tsukamoto, Kentarou Oda
  • Patent number: 8713962
    Abstract: To obtain a refrigerating cycle apparatus that reduces a pressure loss at the time of a normal operation in which an ejector is bypassed to improve refrigeration cycle performance. A second throttle apparatus is installed on piping path between the outlet of a condenser, which is a radiator, and the outlet of a first throttle device. A check valve is installed on piping path between a gas refrigerant suction section of the ejector and the outlet of the ejector.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: May 6, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takashi Okazaki
  • Publication number: 20140109604
    Abstract: An ejector (200; 300; 400; 600) has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath. The motive nozzle has an exit (110). The mixer has a downstream divergent section down-stream of the convergent section and having a divergence half angle of 0.1-2.0 over a first span of at least 3.0 times a minimum diameter of the mixer.
    Type: Application
    Filed: June 21, 2012
    Publication date: April 24, 2014
    Applicant: CARRIER CORPORATION
    Inventors: Miad Yazdani, Abbas A. Alahyari, Thomas D. Radcliff, Parmesh Verma
  • Publication number: 20140090405
    Abstract: A refrigeration cycle is operated in conjunction with various thermodynamic cycle working fluid circuits to cool a target fluid that may be used in a separate system or duty. In one embodiment, the refrigeration cycle includes an ejector that extracts a motive fluid from the working fluid cycles in order to entrain a suction fluid that is also extracted from the working fluid circuits. Expanding the suction fluid reduces the pressure and temperature of the suction fluid for cooling the target fluid in an evaporator, which evaporates the suction fluid before being entrained into the ejector by the motive fluid. A mixed fluid is discharged from the ejector and injected into the working fluid circuits upstream from a condenser that cools the mixed fluid and the working fluid circulating throughout the working fluid circuits.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 3, 2014
    Applicant: ECHOGEN POWER SYSTEMS, LLC
    Inventors: Timothy James Held, Michael Louis Vermeersch, Tao Xie
  • Patent number: 8683819
    Abstract: The present invention relates to an air conditioner using hot water heated by a solar heating system, the air conditioner comprising: a heater 10 that has a vacuous interior and a plurality of hot water branch pipes 13 immersed in the refrigerant; a condenser 30 connected with the heater 10 through a steam pipe L1; an ejector 20 mounted to the steam pipe L1; a flow regulator 40 installed on the exit side of the condenser 30; a refrigerant return line L2 connected to the flow regulator 40 to return the refrigerant to the heater 10; an evaporator 50 connected to the flow regulator 40 to receive condensate; a first steam supply line L4 connected with the evaporator 50 to supply the evaporated refrigerant to the ejector 20; and a second steam supply line L5 that is branched from the first steam supply line L4 and then connected with the steam pipe L1 and has a vacuum pump P2 installed therein.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: April 1, 2014
    Inventors: Sang-Woo Roh, Bong-Woo No
  • Publication number: 20140083121
    Abstract: An ejector (200; 300; 400) has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath to pass a motive flow. The motive nozzle has an exit (110). The ejector has surfaces (258, 260) positioned to introduce swirl to the motive flow.
    Type: Application
    Filed: April 10, 2012
    Publication date: March 27, 2014
    Applicant: CARRIER CORPORATION
    Inventors: Louis Chiappetta, JR., Parmesh Verma, Thomas D. Radcliff
  • Patent number: 8661845
    Abstract: A heat exchanger includes a heat exchanging section for performing heat exchange between a refrigerant and a cooling medium and a passage section. The passage section includes a first passage and a second passage for supplying the refrigerant to the heat exchanging section and a supply passage for supplying the refrigerant to the first passage and the second passage. The first passage and the second passage define a first opening portion and a second opening portion opening at an end of the supply passage. A minimum distance between an opening edge of the first opening portion and an inner surface of the supply passage is equal to a minimum distance between an opening edge of the second opening portion and the inner surface of the supply passage.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: March 4, 2014
    Assignee: Denso Corporation
    Inventors: Thuya Aung, Nobuharu Kakehashi, Tomohiko Nakamura, Hideaki Sato