Compressor-condenser-evaporator Circuit Patents (Class 62/498)
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Publication number: 20140024575Abstract: A composition based on 3,3,3-trifluoropropene and ammonia, and to the use thereof, especially as a heat transfer fluid. A heat-transfer composition including the composition based on 3,3,3-trifluoropropene and ammonia and also one or more additives chosen from lubricants, stabilizers, surfactants, tracers, fluorescers, odorant agents and solubilizers, and mixtures thereof. A process for heating or cooling a fluid or a body by means of a vapor compression circuit containing a heat-transfer fluid, said process successively including evaporation of the heat-transfer fluid, compression of the heat-transfer fluid, condensation of the heat fluid and depressurization of the heat-transfer fluid, in which the heat-transfer fluid is a composition based on 3,3,3-trifluoropropene and ammonia.Type: ApplicationFiled: March 9, 2012Publication date: January 23, 2014Applicant: ARKEMA FRANCEInventors: Wissam Rached, Jean-Christophe Boutier
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Patent number: 8627680Abstract: A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.Type: GrantFiled: October 4, 2011Date of Patent: January 14, 2014Assignee: Trane International, Inc.Inventors: Paul H. Haley, Dennis R. Dorman, Frederic Byron Hamm, Jr., David M. Foye, James A. Kwiatkowski, Rick T. James, Randall L. Janssen, William J. Plzak
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Patent number: 8627670Abstract: A vertical discharge condenser includes a generally cylindrical heat exchanger having a vertical interruption between a first and a second end of the heat exchanger, a panel enclosing the vertical interruption in the heat exchanger to form an uninterrupted generally cylindrical enclosure, a generally circular fan grille enclosing a top of the cylindrical enclosure, and a generally circular base pan enclosing a bottom of the cylindrical enclosure.Type: GrantFiled: September 30, 2008Date of Patent: January 14, 2014Assignee: Springer Carrier Ltda.Inventors: Luciano da Luz Moraes, Regis Silva, Carlos Afonso Tesche, Joao Paulo Pacheco Oliveira, Lucio Alende Reffatti
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Patent number: 8627671Abstract: A self-contained heat transfer system conveys heat from a first heat reservoir at a relatively low temperature to a second heat reservoir at relatively high temperature, the heat transfer system defining a closed loop that contains a working fluid. The self-contained heat transfer system includes a hermetically-sealed housing that defines an enclosure; a first heat transfer device having an exposed surface configured to be in thermal communication with the first heat reservoir; a second heat transfer device having an exposed surface configured to be in thermal communication with the second heat reservoir; and an electrochemical compressor within the enclosure and between the first and second heat transfer devices, wherein the electrochemical compressor includes one or more electrochemical cells, each electrochemical cell including a gas pervious anode, a gas pervious cathode, and an electrolytic membrane disposed between and in intimate electrical contact with the cathode and the anode.Type: GrantFiled: April 30, 2010Date of Patent: January 14, 2014Assignee: Xergy IncorporatedInventor: Bamdad Bahar
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Publication number: 20140007602Abstract: An apparatus is provided for automatic regulation of water temperature. The apparatus comprises a compressor for compressing a refrigerant, a condenser that receives refrigerant from the compressor and reduces the temperature of the refrigerant by exchanging the refrigerant's heat with air surrounding the condenser, an expanding valve that receives refrigerant from the condenser and transforms the refrigerant in a high pressure state to a low pressure state, and an evaporator that receives refrigerant from the expanding valve and facilitates heat exchange between the low temperature refrigerant and a high temperature water. The evaporator comprises of two adjacent chambers that share a common wall. The first chamber is configured to receive the refrigerant and the second chamber is configured to receive the water, and the refrigerant and water exchange heat through the common wall. The heat exchange results in the reduction of water temperature and an increase in the refrigerant's temperature.Type: ApplicationFiled: July 9, 2013Publication date: January 9, 2014Inventor: AbdulRazaq Haruna
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Publication number: 20140007612Abstract: A refrigerator having a freezer compartment and a refrigerator compartment that circulates two individual refrigerating cycles using two compressors so as to individually cool the freezer compartment and the refrigerator compartment. The refrigerator includes two compressors, one dual path condenser, two expansion valves, and two evaporators. The dual path condenser has two individual condensation paths.Type: ApplicationFiled: June 27, 2013Publication date: January 9, 2014Inventors: Ki Hyun KIM, Myoung Hun Kim, Hool Joong Kim, Ho Choi
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Publication number: 20140000308Abstract: A refrigeration cycle apparatus (50) includes: a main refrigerant circuit (21) having a compressor (1), a radiator (2), a first expansion mechanism (5), a second expansion mechanism (6), and an evaporator (4); an injection passage (22) for supplying an intermediate-pressure refrigerant to an injection port 1c of the compressor 1; and a water circuit (30) through which water to be heated in the radiator (2) flows. The refrigeration cycle apparatus (50) includes a sub heat exchanger (3) for cooling the water in the water circuit (30) by exchanging heat between the refrigerant in the injection passage (22) and the water to be heated in the radiator (2).Type: ApplicationFiled: September 4, 2013Publication date: January 2, 2014Applicant: Panasonic CorporationInventors: Kou KOMORI, Yuichi YAKUMARU, Tomoichiro TAMURA, Masaya HONMA, Hiroki HAYASHI
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Patent number: 8616016Abstract: At a time of a heating high-load operation, a harmonic current is flown in an armature winding to induction-heat rare-earth magnets, thus reducing a residual magnetic flux density. Thereby, the number of rotations of a radial gap type motor is improved. The rare-earth magnets are provided near a cooling medium passage extending substantially in parallel with a flow line of a cooling medium, so that the cooling medium recovers heat of the heated rare-earth magnets. At a time of a cooling high-load operation, a greater number of rotations are obtained with respect to the same torque command value, by a field weakening control by means of a current-phase advance.Type: GrantFiled: June 8, 2009Date of Patent: December 31, 2013Assignee: Daikin Industries, Ltd.Inventors: Yoshinari Asano, Tomomi Sakamoto, Nobuyuki Kifuji, Hirofumi Higashi, Shintarou Araki
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Publication number: 20130340469Abstract: A refrigerator is provided. The refrigerator includes a refrigerator includes a compressor configured to compress a refrigerant, a condensing unit configured to pass the compressed refrigerant and a first heat exchanger unit and a second heat exchanger unit where each of the first heat exchanger unit and the second heat exchanger unit are configured to provide heat exchange as the refrigerant passes therethrough. When a defrosting mode is performed for one of the first heat exchanger unit and the second heat exchanger unit, the refrigerant compressed at the compressor unit is supplied to the one of the first heat exchanger unit and the second heat exchanger unit, and then the refrigerant is supplied to the other one of the first heat exchanger unit and the second heat exchanger unit after the refrigerant is passed through an expansion valve.Type: ApplicationFiled: June 21, 2013Publication date: December 26, 2013Inventor: Seongjae KIM
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Publication number: 20130340455Abstract: A refrigeration system with pressure-balanced heat reclaim includes at least one compressor configured to discharge a compressed refrigerant. A heat reclaim branch has a first end configured to receive at least a first portion of the compressed refrigerant and a second end, the heat reclaim branch also has a first refrigerant pressure drop. A condensing branch has a first end configured to receive at least a second portion of the compressed refrigerant and a second end, the second end of the condensing branch is fluidly coupled to the second end of the heat reclaim branch, and the condensing branch has a second refrigerant pressure drop. A pressure regulation device is disposed on one of the heat reclaim branch and the condensing branch and substantially equalizes the first refrigerant pressure drop and the second refrigerant pressure drop.Type: ApplicationFiled: June 18, 2013Publication date: December 26, 2013Inventors: J. Scott Martin, Victor N. Votary
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Patent number: 8615327Abstract: A humidity estimation device connected with an air-conditioner includes a charge airflow rate estimation (CARE) unit, a charge air absolute humidity estimation (CAAHE) unit, an indoor generated vapor amount estimation (IGVAE) unit, and an indoor absolute humidity estimation (IAHE) unit. The CARE unit calculates an estimated charge airflow rate (ECAR) of the air-conditioner based on operation control information of the charge fan and a preset fan differential pressure. The CAAHE unit calculates an estimated charge air absolute humidity (ECAAH) of the air-conditioner based on a charge air temperature and a preset charge air relative humidity. The IGVAE unit calculates an estimated indoor generated vapor amount (EIGVA) based on an indoor temperature, the number of persons in the room and activity index values of the persons. The IAHE unit calculates an estimated absolute humidity in the room based on the ECAR, the ECAAH and the EIGVA.Type: GrantFiled: October 13, 2010Date of Patent: December 24, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Yasuo Takagi, Koichi Ikeda, Yukio Hiraoka, Hisashi Kobayashi, Akihiro Fujii
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Publication number: 20130333413Abstract: A rooftop air conditioning unit, including an air conditioner to produce conditioned air for a conditioned space within a building, the air conditioner having an evaporator, a compressor operably disposed downstream from the evaporator and a condenser operably interposed between the compressor and the evaporator, the rooftop air conditioning unit including a housing, disposed on a roof of the building to house the evaporator, the compressor and the condenser, the housing being formed to define a pathway from an inlet that is fed by exterior and/or interior air to an outlet leading to the conditioned space and a heat reclaim module disposed within the housing and operably coupled to the air conditioner to be receptive of heat produced in the air conditioner for heat exchange operations.Type: ApplicationFiled: March 8, 2012Publication date: December 19, 2013Applicant: CARRIER CORPORATIONInventors: Richard G. Lord, Eugene D. Daddis, JR., Kenneth J. Nieva
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Publication number: 20130333862Abstract: An air-conditioning apparatus controls that a discharge temperature does not become too high with a refrigerant whose compressor discharge temperature readily rises, and thus suppress degradation of the refrigerant and a refrigerating machine oil. An injection pipe that injects a heat source side refrigerant into a compressor is installed, connected a pipe between a backflow prevention device and an opening and closing device installed on a branching pipe, and an aperture unit in the compressor.Type: ApplicationFiled: January 31, 2011Publication date: December 19, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Koji Yamashita, Hiroyuki Morimoto, Katsuhiro Ishimura, Shinichi Wakamoto, Naofumi Takenaka
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Publication number: 20130333402Abstract: Climate control systems and methods of operating climate control systems for motor vehicles are provided herein. In one example, the method comprises the steps of expanding a condensed refrigerant stream with an expansion valve to form a partially expanded refrigerant stream. The partially expanded refrigerant stream comprises a refrigerant liquid phase and a refrigerant vapor phase. The partially expanded refrigerant stream is separated with a liquid-vapor separator into a refrigerant liquid stream and a refrigerant vapor stream. Heat is exchanged between air passing across or through an evaporator and the refrigerant liquid stream passing internally through and expanding in the evaporator to form a superheated refrigerant gas stream.Type: ApplicationFiled: June 18, 2012Publication date: December 19, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: BRYAN M. STYLES, HARRY E. EUSTICE
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Publication number: 20130333412Abstract: An oil-free central compressor variable refrigerant flow air conditioning system structure and method is set out. The system may be a new installation, or retrofit. Refrigerant piping spans are not limited by considerations of entrained oil flow.Type: ApplicationFiled: April 22, 2013Publication date: December 19, 2013Applicant: MULTISTACK LLCInventor: Mark PLATT
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Patent number: 8601831Abstract: A refrigeration machine for a domestic refrigerator includes a compressor, a condenser and an evaporator, which are connected to form a refrigerant circuit, wherein a stop valve is arranged in a refrigerant path from the condenser to the evaporator.Type: GrantFiled: August 7, 2007Date of Patent: December 10, 2013Assignee: BSH Bosch und Siemens Hausgeraete GmbHInventors: Panagiotis Fotiadis, Hans Ihle
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Patent number: 8601832Abstract: A turbo compressor has a plurality of stages of compression means, each including an impeller and a diffuser, arranged in tandem with the flow of a fluid, and is capable of compressing the fluid sequentially in a plurality of the compression means and supplying the fluid compressed in the compression means in a final stage to a condenser. The diffuser of at least the compression means in the final stage is a vaneless diffuser which does not include diffuser vanes which reduce the turning speed of the fluid in the diffuser. As such, according to this turbo compressor, it is possible to reduce generation of noise resulting from the transmission of turbulence of the fluid to the condenser, which occurs as the refrigerant collides against the diffuser vane.Type: GrantFiled: February 6, 2009Date of Patent: December 10, 2013Assignee: IHI CorporationInventor: Minoru Tsukamoto
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Publication number: 20130319038Abstract: A cooling system includes a compressor that circulates refrigerant; a condenser that condenses the refrigerant; an expansion valve that reduces a pressure of the refrigerant that has been condensed by the condenser; an evaporator that vaporizes the refrigerant that has been reduced in pressure by the expansion valve; a refrigerant passage through which the refrigerant flows from an outlet of the condenser toward an inlet of the expansion valve, and that includes a passage forming portion that forms part of the refrigerant passage; a second passage that is connected in parallel with the passage forming portion; a cooling portion that is provided in the second passage and cools a heat source using the refrigerant; and an expansion valve that is arranged upstream of the cooling portion in the second passage.Type: ApplicationFiled: February 21, 2012Publication date: December 5, 2013Applicants: NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro Kawase, Yuichi Ohno, Kazuhide Uchida, Yoshiaki Kawakami, Yuki Jojima, Eizo Takahashi, Kousuke Sato
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Publication number: 20130319036Abstract: A water-cooled heat rejection heat exchanger is provided and includes a housing having first and second opposing end plates and sidewalls extending between the end plates to form an enclosure, at least the first end plate including first and second inlet/outlet pairs for first and second fluids, respectively, a plurality of plates disposed within the enclosure between the first and second end plates to define a first fluid pathway disposed in fluid communication with the first inlet/outlet pair and a second fluid pathway disposed in fluid communication with the second inlet/outlet pair and a plurality of brazed formations disposed between adjacent ones of the first end plate, the plurality of plates and the second end plate to isolate the first fluid pathway from the second fluid pathway.Type: ApplicationFiled: January 31, 2012Publication date: December 5, 2013Applicant: CARRIER CORPORATIONInventors: Michael F. Taras, Mark J. Perkovich, Mel Woldesemayat
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Patent number: 8596552Abstract: A valve (4) for a refrigeration system. Comprises two diaphragms (8, 10) being operatively connected. One diaphragm (8) is in contact with the refrigerant, the other (10) is in contact with the filling fluid. The two diaphragms (8, 10) may have different active areas. In combination with the connection between the two diaphragms (8, 10) this provides a ‘pressure gearing’ between the filling fluid and the refrigerant. Allows the pressure of the filling fluid to be relatively low even when the pressure of the refrigerant is high, while ensuring that the valve (4) can function properly. Particularly suitable for high pressure refrigeration systems, such as CO2 systems.Type: GrantFiled: October 14, 2005Date of Patent: December 3, 2013Assignee: Danfoss A/SInventors: Holger Nicolaisen, Jens Erik Rasmussen, Torben Funder-Kristensen, Joergen Trelle-Pedersen, Torben Matzon, Anders Vestergaard, Lars Mou Jessen
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Publication number: 20130312452Abstract: An apparatus (20) has a compressor (22), heat rejection heat exchanger (30), heat absorption heat exchanger (60), and expansion-compression device (40; 200). The expansion-compression device couples the heat absorption heat exchanger to the heat rejection heat exchanger and to the compressor. The expansion-compression device comprises first (80A), second (80B), third (80C), and fourth (80D) variable volume chambers and a pivoting member. The pivoting member (98) is mounted for reciprocal rotation in opposite first and second directions about an initial orientation and is coupled to the chambers so that: rotation from the initial orientation in the first direction expands the first and third chambers and compresses the second and fourth chambers; and rotation from the initial orientation in the first direction compresses the first and third chambers and expands the second and fourth chambers.Type: ApplicationFiled: January 23, 2012Publication date: November 28, 2013Applicant: CARRIER CORPORATIONInventor: David W. Gerlach
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Publication number: 20130312451Abstract: A multiple panel heat exchanger and atmospheric water harvester using the same is provided. The multiple panel heat exchanger includes two or more heat exchange panels arranged in side-by-side series with their major cross sectional areas normal to airflow across the heat exchanger. The heat exchange panels are fluidically connected in series and with a first heat exchange panel in the series having a heat exchange fluid inlet into the heat exchanger and a last heat exchange panel in the series having a heat exchange fluid outlet from the heat exchanger. The multiple panel heat exchanger is suited for a heat exchanger in a refrigeration circuit, such as an evaporator in a vapor-compression refrigeration circuit. An atmospheric water harvester including the multiple panel heat exchanger is also provided.Type: ApplicationFiled: May 24, 2012Publication date: November 28, 2013Inventor: Michael D. Max
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Patent number: 8590329Abstract: A medium voltage power controller box is mounted on a chiller unit with the other components of the chiller system. The power controller box can be positioned on the chiller system unit to permit the power controller box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the power controller box and the motor. In addition, the power controller box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the power controller box is used to provide the necessary connections between the control panel and the power controller box.Type: GrantFiled: June 7, 2012Date of Patent: November 26, 2013Assignee: Johnson Controls Technology CompanyInventors: Dean K. Norbeck, John C. Hansen
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Patent number: 8590327Abstract: A refrigerating apparatus for keeping an inside of a storage at a predetermined low-temperature state includes first and second refrigerant circuits including compressors, condensers, decompressors, and evaporators, connected circularly with pipings to form refrigerating cycles, the circuit having a first or second refrigerant sealed therein as a working refrigerant, a first sensor which detects a temperature of a cascade condenser constituted by integrating the evaporator of the first refrigerant circuit and the condenser of the second refrigerant circuit in a heat exchangeable manner, first and second controllers which control operation performances of the first and second compressors in a variable manner based on first and second sensor detected temperatures in order that the first and second sensor detected temperatures are first and second temperatures, respectively, and a second sensor which detects a temperature inside the storage.Type: GrantFiled: June 29, 2010Date of Patent: November 26, 2013Assignee: Panasonic Healthcare Co., Ltd.Inventors: Ryuzo Tobe, Tetsuo Sakurai, Ryuichi Tsuruma
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Publication number: 20130305775Abstract: A system to perform a vapor compression refrigeration cycle using water as the refrigerant is provided and includes an evaporator to output water vapor having a water vapor temperature of a first temperature and a water vapor pressure of a first pressure, a condenser to output liquid water at a second temperature, which is higher than the first temperature, and a second pressure, which is higher than the first pressure and a compressor, operably disposed downstream from the evaporator and upstream from the condenser, to compress the water vapor to thereby increase the water vapor temperature from the first temperature and to thereby increase the water vapor pressure from the first pressure by at least a 7:1 ratio.Type: ApplicationFiled: January 23, 2012Publication date: November 21, 2013Applicant: Carrier CorporationInventor: Joseph J. Sangiovanni
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Publication number: 20130305764Abstract: In an air-conditioning apparatus equipped with an outdoor unit having outdoor devices including a compressor that compresses a refrigerant, a flow switching valve that switches the flowing direction of the refrigerant, an outdoor heat exchanger that exchanges heat between the refrigerant and outdoor air, a first expansion valve that reduces the pressure of the refrigerant, an excess-refrigerant container that retains an excess refrigerant of the refrigerant, and a second expansion valve that reduces the pressure of the refrigerant; and an indoor unit having an indoor heat exchanger that exchanges heat between the refrigerant and indoor air, the air-conditioning apparatus includes an outdoor-heat-exchanger refrigerant injection port provided in a refrigerant pipe that is directly connected to the outdoor heat exchanger, and an excess-refrigerant-container refrigerant injection port provided in a refrigerant pipe that is directly connected to the excess-refrigerant container.Type: ApplicationFiled: March 5, 2012Publication date: November 21, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kazunori Korenaga, Takeshi Kuramochi, Hirofumi Horiuchi
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Publication number: 20130298597Abstract: A thermostatic expansion valve and a refrigerating system comprising the thermostatic expansion valve. The thermostatic expansion valve comprises a valve body arranged with an air box on the top, and the inner chamber of the air box is divided into an upper chamber and a lower chamber by a diaphragm. Within the inner chamber of the valve body there are provided a valve plug component and a valve port matched with the valve plug component. The inner chamber of the valve body is divided into a first interface chamber and a second interface chamber by a sealing line or sealing face between the valve port and the valve plug component. At the lower end part of the valve body there is provided a balance chamber to balance the valve plug component. The upper end part of the valve plug component is arranged within the lower chamber and the lower end part thereof is arranged within the balance chamber (14) of the valve body.Type: ApplicationFiled: January 12, 2012Publication date: November 14, 2013Applicant: ZHEJIANG SANHUA CO., LTDInventor: Changqing Liu
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Publication number: 20130298596Abstract: A refrigeration cycle 1 is constituted by joining at least a compressor 2, a condenser 3, a decompression and expansion device 4, and an evaporator 5 to each other by a pipe 6. The condenser 3 is formed of a condenser with a supercooling part including a condensing part 7 and a supercooling part 8. The refrigeration cycle 1 further includes an internal heat exchanger 25. A rate at which the supercooling part 8 occupies with respect to the whole condenser 3 is set to a value which falls within a range of 3% to 9% when the heat exchange efficiency of the internal heat exchanger 25 falls within a range of 25% to 75%.Type: ApplicationFiled: October 7, 2011Publication date: November 14, 2013Applicant: Valeo Japan Co., Ltd.Inventor: Kenji Iijima
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Publication number: 20130298591Abstract: A cooling apparatus that cools an HV appliance heat source includes: a compressor for circulating a coolant; a condenser for condensing the coolant; an expansion valve that decompresses the coolant that has been condensed by the condenser; an evaporator for evaporating the coolant that has been decompressed by the expansion valve; and a coolant passageway through which the coolant that moves from an outlet of the condenser toward an inlet of the expansion valve flows. The coolant passageway includes a passageway-forming portion that forms a portion of the coolant passageway. The cooling apparatus further includes a coolant passageway that is disposed in parallel with the passageway-forming portion, and that circulates the coolant via the HV appliance heat source.Type: ApplicationFiled: January 27, 2012Publication date: November 14, 2013Applicants: NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuichi Ohno, Kazuhide Uchida, Yoshiaki Kawakami, Yuki Jojima, Eizo Takahashi, Kousuke Sato
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Publication number: 20130298588Abstract: A cooling device for a charger capable of simplifying the device configuration and reducing the power consumption is provided. Cooling device for cooling the charger for charging a battery with use of power supply received from a power source includes a compressor for circulating a cooling agent, a condenser for condensing the cooling agent, a decompressor for decompressing the cooling agent condensed by condenser, an evaporator for evaporating the cooling agent decompressed by the decompressor, and a cooling portion for cooling the charger with use of the cooling agent flowing from the condenser, and the cooling portion is provided on a path of the cooling agent flowing from the condenser to the evaporator.Type: ApplicationFiled: February 4, 2011Publication date: November 14, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yuki Jojima
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Publication number: 20130291572Abstract: A device for cool drying a gas in the direction of flow of the coolant includes a closed cooling circuit with successively a compressor, a condenser and an expansion device and an evaporator that is the primary part of a heat exchanger and that has a secondary part through which the gas to be dried is guided. A bypass pipe in the cooling circuit can be closed by a bypass valve with a valve element and a pressure-sensitive element acting on it that is exposed to a local control pressure in the cooling circuit. A control pressure pipe connects the pressure sensitive element to the closed cooling circuit upstream of the outlet of the evaporator.Type: ApplicationFiled: October 31, 2011Publication date: November 7, 2013Applicant: Atlas Copco Airpower, Naamloze VennootschapInventor: Bart Geerts
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Publication number: 20130283838Abstract: The disclosure relates to a unitary heat pump air conditioner (Unitary HPAC) that includes a refrigerant loop having a condenser, a refrigerant expansion device, and an evaporator hydraulically connected in series. An electrically driven compressor is provided to circulate a two-phase refrigerant through the refrigerant loop to transfer heat from the evaporator to the condenser. The unitary HPAC also includes a cold side chiller configured to hydraulically connect to a cold side coolant loop and is in thermal communication with the evaporator. The unitary HPAC further includes a hot side chiller configured to hydraulically connect to a hot side coolant loop and is in thermal communication with the condenser. The refrigerant loop transfer heat from the cold side chiller to the hot side chiller, thereby cooling the cold side coolant loop and heating the hot side coolant loop. The components of the unitary HPAC are mounted on a common platform.Type: ApplicationFiled: February 16, 2012Publication date: October 31, 2013Applicant: Delphi Technologies, Inc.Inventors: Prasad S. Kadle, Frederick V. Oddi, Gary S. Vreeland, Edward Wolfe, IV, Lindsey L. Leitzel, Scott B. Lipa
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Publication number: 20130283850Abstract: An air-conditioning loop, in which a refrigerant flows, is capable of operating as a heat pump. The air-conditioning loop includes a compressor. The air-conditioning loop further includes a first solenoid valve connected to the compressor, to a radiator, and to an external heat exchanger. The radiator is connected to the external heat exchanger via a first pressure-release device and to an evaporator via a second pressure-release device. The evaporator is connected to the compressor. The external heat exchanger is connected to the compressor and to the evaporator via a second solenoid valve. The external heat exchanger, the first solenoid valve, and the second solenoid valve constitute a unitary part.Type: ApplicationFiled: November 15, 2011Publication date: October 31, 2013Applicant: Valeo Systemes ThermiquesInventor: Laurent Delaforge
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Publication number: 20130283831Abstract: A space conditioning system includes a hot gas reheat section and one or more modulating valves to direct a percentage of refrigerant flow to the hot gas reheat section. The hot gas reheat section includes multiple refrigerant circuits arranged in parallel. A control valve is used to allow the refrigerant to flow through selected ones of the multiple refrigerant circuits in response to the percentage of refrigerant flow directed to the hot gas reheat section, thereby varying the internal volume of the hot gas reheat section available to the refrigerant. Refrigerant charge hold-up within the hot gas reheat section can thereby be minimized.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Inventor: Yi Hua
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Publication number: 20130283830Abstract: Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases.Type: ApplicationFiled: March 15, 2013Publication date: October 31, 2013Applicant: TRANE INTERNATIONAL INC.Inventors: Daoud Ali JANDAL, Julie Ann MAJURIN, Stephen Anthony KUJAK, Raymond Scott SCHAFER, Paul Edmond CIESLINSKI
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Publication number: 20130283833Abstract: A refrigeration system (2) comprises a condenser/gas cooler (4), an intermediate expansion device (6) and a refrigerant collecting container (8); a normal refrigeration branch (10) connecting the refrigerant collecting container (8) to the condenser/gas cooler (4) said normal refrigeration branch (12) comprising a first expansion device (12), a first evaporator (14) and a compressor unit (16) of the normal refrigeration branch (10); a freezing branch (18) connecting the refrigerant collecting container (8) to the condenser/gas cooler (4), said freezing branch (18) comprising a second expansion device (20), a second evaporator (22), and a first compressor unit (24) and a second compressor unit (26) of said freezing branch (18), the first and second compressor units (24, 26) of the freezing branch (18) being connected in series.Type: ApplicationFiled: January 14, 2011Publication date: October 31, 2013Inventors: Hans-Joachim Huff, Tobias Sienel
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Publication number: 20130283832Abstract: Refrigeration systems with a purge for removing non-condensables from an environmentally-suitable chiller refrigerant are provided. The refrigeration systems utilize an environmentally-suitable chiller refrigerant with a 100 year direct global warming potential (GWP) of less than 150. The refrigeration systems further include a remover to remove refrigerant-harmful gases from the chiller refrigerant.Type: ApplicationFiled: March 15, 2013Publication date: October 31, 2013Applicant: TRANE INTERNATIONAL INC.Inventors: Stephen Anthony KUJAK, Julie Ann MAJURIN, Daoud Ali JANDAL, William O'DRISCOLL
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Patent number: 8561425Abstract: A refrigerant vapor compression system includes a flash tank economizer and a refrigerant-to-refrigerant heat exchanger economizer disposed in series refrigerant flow relationship in the refrigerant circuit intermediate a refrigerant heat rejection heat exchanger and a refrigerant heat absorption heat exchanger. A primary expansion valve disposed in the refrigerant circuit in operative association with and upstream of the refrigerant heat absorption heat exchanger and an economizer expansion valve disposed in the refrigerant circuit in operative association and upstream of the flash tank economizer provide a two-step expansion process for expanding refrigerant passing through the refrigerant circuit from the refrigerant heat rejection heat exchanger to the refrigerant heat absorption heat exchanger.Type: GrantFiled: April 24, 2007Date of Patent: October 22, 2013Assignee: Carrier CorporationInventors: Biswajit Mitra, Yu H. Chen
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Patent number: 8561424Abstract: Several air motors are powered by a refrigerant that is pressurized to drive an alternator or generator. The electrical output can be used to propel a vehicle or to drive any type of operating system for land, air or sea based systems. The system uses a dual charging system to move pressurized gas that is then injected into an air motor. The gas is then exhausted and condensed back to a liquid. The liquid is stored until it is needed. It is then heated back into a gas, and fed back into the air motor in a continuous cycle. Several of these systems can be installed and connected to a planetary gear system.Type: GrantFiled: September 11, 2008Date of Patent: October 22, 2013Inventors: Michael Posciri, Charles Posciri
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Publication number: 20130269380Abstract: A refrigeration cycle device includes a first refrigerant passage in which a compressor, a first solenoid valve, a four-way valve, an outdoor heat exchanger, a pressure reducing device, an indoor heat exchanger, and an accumulator are sequentially connected through pipes; a second refrigerant passage in which a second solenoid valve and a water refrigerant heat exchanger are sequentially connected to a pipe that connects a portion of a pipe between the compressor and the first solenoid valve to the pressure reducing device; heating means for heating a shell of the compressor; and a controller that performs control so as to close the first solenoid valve and the second solenoid valve in association with an operation of the compressor being stopped and so as to open the first solenoid valve when the heating means heats the compressor.Type: ApplicationFiled: March 13, 2013Publication date: October 17, 2013Applicant: Mitsubishi Electric CorporationInventor: Ryo OYA
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Patent number: 8555669Abstract: An improved air conditioner condensing unit for use in corrosive environments. The condensing unit comprises a compressor, a condenser coil containing cooling fins having a spacing of about 0.080 to about 0.050 inches, and a motorized corrosive resistant shrouded fan assembly, all of which are mounted on a substantially flat corrosive resistant baseplate.Type: GrantFiled: October 16, 2009Date of Patent: October 15, 2013Assignee: LeBlanc & Associates, IncInventors: Mervyn LeBlanc, David Sandlin, Scott Berniard
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Patent number: 8549873Abstract: A heat exchanger includes a shell communicating with a first fluid inlet pipe and a first fluid outlet pipe, end caps coupled to ends of the shell to communicate with a second fluid inlet pipe and a second fluid outlet pipe, a plurality of tubes disposed in the shell to constitute a channel through which a second fluid flows, an end baffle located at ends of the tubes to prevent mixing of a first fluid and the second fluid, and a first plate to fill gaps between the tubes and the end baffle.Type: GrantFiled: November 19, 2010Date of Patent: October 8, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Yong Sam Kwon
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Publication number: 20130255284Abstract: The invention relates to a composition comprising (E)-1,1,1,4,4,4-hexafluorobat-2-ene as a mixture with at least one hydrocarbon, hydrofinorocarbon or fluoroolefin compound having a boiling point less than or equal to 42° C., and also to the use of this composition as a heat transfer fluid.Type: ApplicationFiled: November 8, 2011Publication date: October 3, 2013Applicant: Arkema FranceInventor: Wissam Rached
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Publication number: 20130255309Abstract: A high-efficiency air conditioning system for chilling an interior of a building that includes: a compressor; a condenser having a condenser fan associated with the condenser that moves air to cool the condenser; at least two evaporator sections wherein a first evaporator section operates at a first evaporator pressure and a second evaporator section operates at a second evaporator pressure that is different than the first evaporator pressure; at least a first throttling device and a second throttling device having different throttling characteristics with the first throttling device being less restrictive than the second throttling device; and a plurality of refrigerant conduits.Type: ApplicationFiled: March 13, 2013Publication date: October 3, 2013Applicant: Whirlpool CorporationInventors: Guolian Wu, Steven Kuehl, Alberto Gomes, Nihat Cur
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Patent number: 8544256Abstract: One embodiment of a heat exchange system is disclosed having a heat exchange compressor and multiple evaporators capable of operating at different heat transfer requirements. The heat exchange compressor may be a single-stage or multi-stage compressor. In one form the evaporators return working fluid in separate streams to the heat exchange compressor. The heat exchange compressor may be integrated with a gas turbine engine and includes a number of inlets that correspond to a number of separate evaporators. Each inlet can be configured to receive working fluid at different locations within a pressure and velocity flow field created in the compressor. The heat exchange compressor may be driven by a shaft of the gas turbine engine and may be positioned at a variety of locations.Type: GrantFiled: June 20, 2008Date of Patent: October 1, 2013Assignee: Rolls-Royce CorporationInventor: Larry Allen Junod
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Publication number: 20130247603Abstract: In order to improve a refrigeration system comprising a refrigeration circuit, in which a refrigerant compressor, a condenser following on from the refrigerant compressor, an expansion device following on from the condenser and an evaporator following on from the expansion device are arranged, the evaporator being connected to the refrigerant compressor, wherein the refrigerant compressor has a drive motor speed-controlled by an electronic motor control and a control cooling branch which has refrigerant flowing through it, branches off from the refrigeration circuit between the condenser and the expansion device and is guided to a connection of the refrigerant compressor and in which a cooling element is arranged which is connected in a heat conducting manner to electronic power components of the motor control, in such a manner that disruption to the operation of the motor control is avoided as far as possible it is suggested that a regulating device be provided for the control cooling branch and this regulatType: ApplicationFiled: March 19, 2013Publication date: September 26, 2013Applicant: BITZER KUEHLMASCHINENBAU GMBHInventors: Birte Margotti, Stephan Roelke
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Publication number: 20130247608Abstract: A refrigerator may include a compressor with a reciprocating member to compress or expand working gas by undergoing reciprocating movement, and a leaf spring unit to support the reciprocating member. The leaf spring unit includes a leaf spring having a first rim fixed to a compressor body, a first hub arranged on an inner side of the first rim and mounted on the reciprocating member and a resilient arm part movably supporting the first hub with respect to the first rim, and an auxiliary spring having a second rim fixed to the compressor body, a second hub arranged on an inner side of the second rim and mounted on the reciprocating member and an auxiliary spring part supported in a form of cantilever on the second rim and the second hub. The leaf spring is arranged between auxiliary springs, and the auxiliary spring part opposes the resilient arm part.Type: ApplicationFiled: March 13, 2013Publication date: September 26, 2013Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventor: Yoshikatsu HIRATSUKA
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Publication number: 20130239597Abstract: A cold plate device and method for cooling electronic systems is provided including a generally flat thermally conductive body having a cooling channel within the thermally conductive body. A first cooling fluid travels through the cooling channel to remove heat from the conductive body. A vapor compression cycle system is coupled to the thermally conductive body such that the first cooling fluid removes heat from a second cooling fluid in a portion of the vapor compression cycle system.Type: ApplicationFiled: March 13, 2012Publication date: September 19, 2013Applicant: Hamilton Sundstrand CorporationInventor: Andre Mitchell
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Publication number: 20130233013Abstract: To increase a heat exchange capacity of an indoor heat exchanger without increasing a pressure loss inside tubes of an outdoor heat exchanger. A heat exchanger is constituted by an indoor machine equipped with an indoor heat exchanger 10 constituted by a plurality of heat transfer tubes 12A, which have a spiral grooves 13A formed with a predetermined lead angle Ra on inner faces of the tubes and are made to pierce a plurality of fins 11, and an outdoor machine equipped with an outdoor heat exchanger 20 constituted by a plurality of heat transfer tubes 22A which have a lead angle Rb of spiral grooves 23A smaller than that of a heat transfer tubes 10A used for the indoor heat exchanger 10 and are made to pierce a plurality of fins 11.Type: ApplicationFiled: March 15, 2013Publication date: September 12, 2013Applicant: Mitsubishi Electric CorporationInventor: Sangmu Lee
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Publication number: 20130233012Abstract: Refrigeration systems are configured to utilize an operating fluid comprising an activated oil blend. The activated oil blend can comprise one or more precursor oils that are blended in a closed vessel containing a catalyst. Preferred operating fluids also comprise a polar heat transfer fluid such as r-134a, wherein at least some of the polar heat transfer molecules are complexed to a component of the activated oil blend.Type: ApplicationFiled: February 22, 2013Publication date: September 12, 2013Inventor: Bob Lee Davis