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公开(公告)号：US10450489B2
公开(公告)日：2019-10-22
申请号：US15343664
申请日：2016-11-04
申请人： ARKEMA FRANCE
发明人： Wissam Rached
摘要： A process for cooling or heating a fluid or a body by means of a vapor compression circuit including a centrifugal compressor and containing a heat-transfer fluid, the heat-transfer fluid including at least two compounds selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 1,1,1,2-tetrafluoropropene, 1,1-difluoroethane and 3,3,3-trifluoropropene, in which: the ratio of the Mach number of the centrifugal compressor to the Mach number which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,1,2-tetrafluoroethane in the vapor compression circuit is greater than or equal to 0.97 and less than or equal to 1.03; the compression ratio of the centrifugal compressor is less than or equal to the compression ratio which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,12-tetrafluorethane in the vapor compression circuit.
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公开(公告)号：US10364623B2
公开(公告)日：2019-07-30
申请号：US14650567
申请日：2013-12-09
申请人： UNITED WIRE, LTD.
发明人： Andrew Ralph
IPC分类号： B01D33/80 , B01D33/03 , B07B1/46 , B01D35/28 , E21B21/06 , F25B1/10 , F25B31/00 , F04D17/12 , F04D25/06 , F04D29/42 , F04D29/58 , F25B1/053 , F04D29/059
摘要： This disclosure is generally drawn to systems, devices, apparatus, and/or methods related to shaker/filtration systems for drilling environments. Specifically, the disclosed systems, devices, apparatus, and/or methods relate to extended handles on screens used in shaker/filtration systems for drilling environments. In some examples, extended screen handle(s) may include a fastening portion and a handling portion. The fastening portion may be adapted to be coupled to a screen along a side of the screen, and the handling portion may be coupled to the fastening portion. The handling portion may extend above the screen and extend about 25-100% of the length of the side of the screen.
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公开(公告)号：US20190170379A1
公开(公告)日：2019-06-06
申请号：US16207711
申请日：2018-12-03
发明人： David B. DEARING , Andrew ABEL
摘要： An air system includes an enclosure. A compressor, a first energy exchange device, an expansion device, and a second energy exchange device are each positioned in or along the enclosure and connected in a closed refrigerant loop. A first inlet receives air being psychrometrically controlled in the enclosure from a first source. A first outlet removes the psychrometrically controlled air from the enclosure. A second inlet receives air being non-psychrometrically controlled in the enclosure from a second source. A second outlet removes the non-psychrometrically controlled air from the enclosure. A third energy exchange device positioned in or along the enclosure exchanges energy between the psychrometrically controlled air and the non-psychrometrically controlled air. The enclosure is adapted for insertion through an opening having opposed parallel sides having a dimension of 36 inches or less.
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公开(公告)号：US10227995B2
公开(公告)日：2019-03-12
申请号：US14903232
申请日：2014-07-08
发明人： Kentarou Oda , Nobuyoshi Sakuma
摘要： Provided are a turbo compressor which is provided with an impeller rotating about a rotating shaft, and a seal part having a facing portion which faces an outer diameter portion of a hub of the impeller in a radial direction, in which a shunting groove for foreign matter which has infiltrated between the outer diameter portion and the facing portion is formed in the seal part, and a turbo refrigerating machine which is provided with the turbo compressor.
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公开(公告)号：US20190049161A1
公开(公告)日：2019-02-14
申请号：US16060433
申请日：2017-04-20
申请人： Danfoss A/S
摘要： One exemplary embodiment of this disclosure relates to a refrigerant compressor for use in a chiller system. The compressor includes an electric motor arranged upstream of a stage of a compressor in the main refrigerant flow path. This disclosure also relates to an axial flow compressor of a relatively high capacity, and a recirculation feature for the same.
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公开(公告)号：US20190041100A1
公开(公告)日：2019-02-07
申请号：US16076477
申请日：2017-04-12
发明人： Naoya MIYOSHI , Kazuki WAJIMA
摘要： The present invention makes it possible in a centrifugal chiller utilizing a low pressure refrigerant used at a maximum pressure of less than 0.2 MPaG to effectively extract, in high concentration, non-condensible gas that has mixed into the low pressure refrigerant, and thus suppresses reductions in condensing efficiency. This condenser (3) is equipped with: a shell vessel (21) into which a low pressure refrigerant used at a maximum pressure of less than 0.2 MPaG is introduced; a refrigerant inlet (22) which is provided to the top portion of the shell vessel (21); a refrigerant outlet (23) which is provided to the bottom portion of the shell vessel (21); a heat transfer tube bundle (25) in which a plurality of heat transfer tubes (25a) circulating a chilled liquid in the interior thereof are bundled, and which extends along the interior of the shell vessel (21); a gas extraction tube (31) in the heat transfer tube bundle interior, the gas extraction tube being disposed in the center region in the radial direction of the heat transfer tube bundle (25), forming a tubular shape arranged parallel to the axial direction of the heat transfer tube bundle (25), and having formed in the bottom surface thereof non-condensible gas extraction holes (31a) for extracting non-condensible gas that has mixed into the low pressure refrigerant; and a gas extraction device (33) which is connected to the gas extraction tube (31) in the heat transfer tube bundle interior and extracts the non-condensible gas.
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公开(公告)号：US10174986B2
公开(公告)日：2019-01-08
申请号：US15024616
申请日：2014-11-05
摘要： The present invention has an object to suppress an overshoot in the outlet temperature of a heat medium. A heat source machine controlling apparatus includes a computing unit and a set temperature changing unit. The computing unit calculates a load change rate using a predetermined arithmetic expression. The set temperature changing unit determines whether or not the load change rate calculated by the computing unit exceeds a predetermined threshold value. In the case where the load change rate exceeds the predetermined threshold value, the set temperature changing unit changes a set chilled water outlet temperature so as to suppress a change in a chilled water outlet temperature. For example, in the case where the chilled water outlet temperature is on a falling trend, if the set chilled water outlet temperature is set to a relatively high value, the heat source machine load decreases, and the chilled water outlet temperature is controlled to coincide with the set chilled water outlet temperature after the change. Consequently, an overshoot can be suppressed.
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公开(公告)号：US20180347860A1
公开(公告)日：2018-12-06
申请号：US15780844
申请日：2017-02-09
发明人： Kazuki WAJIMA , Noriyuki MATSUKURA , Kenji UEDA , Naoki KOBAYASHI , Ryosuke SUEMITSU , Yoshinori AKAMATSU , Fuyuhiko SAKYU , Kanako OSAFUNE , Masanori TAMURA , Hiroyuki SUDA , Junji MIZUKADO , Kenji TAKIZAWA , Liang CHEN , Heng-dao QUAN
摘要： An object of the present invention is to provide a heat source machine that can reduce the environmental load and can output the thermal energy with high temperature, and a method for operating the heat source machine. A heat source machine of the present invention includes a centrifugal compressor, condensers, expansion valves, and an evaporator, in which a refrigerant enclosed in a refrigerant circulation circuit configured by sequentially connecting the centrifugal compressor, the condensers, the expansion valves, and the evaporator contains a composition A, a composition B, or a composition C, the composition A has 4 or 5 carbon atoms, 6 or more fluorine atoms, and one or more oxygen atoms, the composition B has 4 or 5 carbon atoms and 6 or more fluorine atoms, the composition C has 3 carbon atoms, 2 chlorine atoms, 3 fluorine atoms, and an intramolecular double bond, and the composition A, the composition B, or the composition C has a boiling point of 20° C. or more and a critical temperature of 180° C. or more.
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公开(公告)号：US10139815B2
公开(公告)日：2018-11-27
申请号：US15107363
申请日：2015-02-24
发明人： Takaaki Miura , Kenji Ueda , Yoshie Kanki , Minoru Matsuo
IPC分类号： G05B23/02 , F25B1/10 , F25B25/00 , F25B40/02 , F25B41/04 , F25B49/02 , F25B1/053 , F25B31/02 , F25B49/00
摘要： This chiller control device (74) is provided with: a storage unit (18) which stores operation data detected at each site in a turbo chiller; a compression unit (34) which, when the size of the operation data accumulated over time in the storage unit (18) becomes too large, converts the operation data each time a condition depending on the type of operation data is met, thereby compressing the data size; and a diagnostic unit (36) which evaluates the state of the turbo chiller on the basis of the operation data converted by the compression unit (34). By this means, the state of the chiller can be diagnosed without increasing the storage capacity of the storage medium that stores operation data of the turbo chiller.
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公开(公告)号：US20180328634A1
公开(公告)日：2018-11-15
申请号：US15971354
申请日：2018-05-04
申请人： LG Electronics Inc.
发明人： Sungyong AHN , Seheon CHOI
CPC分类号： F25B31/006 , F04D25/0606 , F04D29/0513 , F04D29/057 , F04D29/441 , F04D29/5806 , F04D29/584 , H02K5/20 , H02K7/14
摘要： A turbo compressor according to the present invention comprises: a driving unit including a stator and a rotor that generate a rotational force and a rotary shaft that is connected to and rotated by the rotor; an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft; and a casing configured to receive the driving unit and the impeller and support the rotary shaft, wherein the casing comprises: a first shell to which the stator is fixed, the first shell rotatably supporting the rotary shaft; and a second shell spaced apart from the first shell to surround the first shell, a shell passage for the refrigerant pressurized by the impeller being defined in a space between the first and second shells. As a result, the discharge refrigerant cools the driving unit, which improves the efficiency of the compressor.
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