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公开(公告)号：US20190072284A1
公开(公告)日：2019-03-07
申请号：US16084423
申请日：2016-05-26
发明人： Takahiro USHIJIMA
CPC分类号： F24D19/1054 , F24D17/02 , F24D19/1087 , F24D2220/046 , F25B13/00 , F25B41/04 , F25B49/02 , F25B49/022 , F25B2313/003 , F25B2313/009 , F25B2313/021 , F25B2313/0231 , F25B2313/0314 , F25B2313/0315 , F25B2341/0662 , F25B2500/19 , F25B2600/021 , F25B2600/0253 , F25B2600/2507 , F25B2600/2513 , F25B2600/2519 , F25B2700/1931 , F25B2700/2106 , F25B2700/2115 , F25B2700/21152 , F25B2700/21162 , Y02B30/741
摘要： A heat-pump air-conditioning hot-water supply device includes a first refrigerant passage connecting a compressor and a decompressor, a second refrigerant passage branching from between the compressor and a first solenoid valve and connecting a second solenoid valve, a hot-water supply heat exchanger, and the decompressor, a pressure sensor configured to measure discharge pressure of the compressor, and a control device configured to adjust an operational frequency of the compressor and adjust an opening degree of a valve of the decompressor. The control device is configured to calculate a condensing temperature from the discharge pressure, and perform operation in one of an air conditioning prioritized mode in which a preset operational frequency of the compressor is changed, and an energy saving prioritized mode in which the opening degree of the valve of the decompressor is changed, when the condensing temperature is not lower than a set condensing temperature.
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公开(公告)号：US20190058433A1
公开(公告)日：2019-02-21
申请号：US16168108
申请日：2018-10-23
发明人： John Gibson , Tobias Hieble , Julian Pfaffl , Juergen Nill , Ferdinand Breithuth
CPC分类号： H02P27/047 , F25B49/025 , F25B2500/26 , F25B2600/021 , H02P23/00 , H02P27/06 , H02P29/02 , H02P29/032 , H02P2201/01 , Y02B30/741
摘要： In order to improve a method for selecting a frequency converter for a refrigerant compressor unit that includes a refrigerant compressor and an electric drive motor such that the frequency converter is selected in a manner for optimized use, it is proposed that a working state suitable for operation of the refrigerant compressor unit should be selected within an application field of an application graph of the refrigerant compressor, that an operating frequency for this selected working state should be selected, and that a working state operating current value that corresponds to the selected working state and the selected operating frequency should be determined from drive data, for operation of the refrigerant compressor unit.
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公开(公告)号：US20190047353A1
公开(公告)日：2019-02-14
申请号：US16078464
申请日：2017-02-22
申请人： Dometic Sweden AB
发明人： Jarrod Williamson , Louis Liu , Braddon Slater
IPC分类号： B60H1/00
CPC分类号： B60H1/00507 , B60H1/00364 , B60H1/00828 , B60H1/00885 , B60H2001/006 , F24F11/30 , F24F11/89 , F24F13/24 , F24F2110/10 , F25B1/02 , F25B49/025 , F25B2500/12 , F25B2500/13 , F25B2500/19 , F25B2600/01 , F25B2600/0253 , Y02B30/741
摘要： The invention provides an air-conditioner for maintaining a temperature of a conditioned space at or near a set temperature. The air-conditioner comprises at least one rotating or reciprocating element adapted to rotate or reciprocate at a variable frequency. The variable frequency including one or more nuisance frequencies at which vibration or noise within the air-conditioner or the conditioned space causes a nuisance. A processor (30) programmed to control variation of the variable frequency in response to operational requirement. The processor is configured to operate the at least one rotating or reciprocating element so as to substantially exclude operation at the one or more nuisance frequencies.
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公开(公告)号：US20190032981A1
公开(公告)日：2019-01-31
申请号：US16150821
申请日：2018-10-03
CPC分类号： F25B49/02 , F25B13/00 , F25B2313/003 , F25B2313/004 , F25B2313/0292 , F25B2313/0311 , F25B2341/065 , F25B2600/0253 , F25B2600/2509 , F25B2600/2513 , Y02B30/72 , Y02B30/741
摘要： An air conditioning system can be toggled between a heating mode, in which heat is withdrawn from a source (e.g., a geothermal source) and deposited into a conditioned space (e.g., a building), and a cooling mode, in which heat is withdrawn from the conditioned space and deposited into the source. The air conditioning system uses a combination of efficiency-enhancing technologies, including injection of superheated vapor into the system's compressor from an economizer circuit, adjustable compressor speed, the use of one or coaxial heat exchangers and the use of electronic expansion valves that are continuously adjustable from a fully closed to various open positions. A controller may be used to control the system for optimal performance in both the heating and cooling modes, such as by disabling the economizer circuit and vapor injection when the system is in the cooling mode.
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公开(公告)号：US10077774B2
公开(公告)日：2018-09-18
申请号：US15346220
申请日：2016-11-08
发明人： Stephen M. Seibel , Hung M. Pham
IPC分类号： F04C28/08 , F04C28/28 , F04B39/06 , F04B39/12 , F04B49/06 , F04C18/02 , F04C23/00 , F04C28/24 , F25B49/00 , F04C29/00 , F25B49/02 , F25B31/00
CPC分类号： F04C28/28 , F04B39/06 , F04B39/12 , F04B39/123 , F04B49/06 , F04B2203/0204 , F04B2203/0209 , F04C18/0215 , F04C23/008 , F04C28/08 , F04C28/24 , F04C29/0085 , F04C2210/227 , F04C2210/26 , F04C2240/403 , F04C2240/803 , F04C2240/81 , F04C2270/19 , F04C2270/80 , F25B31/006 , F25B49/005 , F25B49/022 , F25B2500/08 , F25B2500/19 , F25B2500/28 , F25B2600/021 , F25B2600/025 , F25B2600/2513 , F25B2700/151 , F25B2700/1931 , F25B2700/21 , F25B2700/21151 , F25B2700/21152 , F25B2700/21163 , F25B2700/21174 , Y02B30/741 , Y10T137/0318 , Y10T137/85986
摘要： A system and method for a compressor includes a compressor connected to a condenser, a discharge line temperature sensor that outputs a discharge line temperature signal corresponding to a discharge line temperature of refrigerant leaving the compressor, and a control module connected to the discharge line temperature sensor. The control module determines a saturated condenser temperature, calculates a discharge superheat temperature based on the saturated condenser temperature and the discharge line temperature, and monitors a flood back condition of the compressor by comparing the discharge superheat temperature with a predetermined threshold. The control module increases a speed of the compressor when the discharge superheat temperature is less than or equal to the predetermined threshold.
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公开(公告)号：US10072663B2
公开(公告)日：2018-09-11
申请号：US14373712
申请日：2012-01-23
申请人： Lin Sun , Joost Brasz , Mogens Rasmussen
发明人： Lin Sun , Joost Brasz , Mogens Rasmussen
CPC分类号： F04D17/12 , F04D17/122 , F04D17/14 , F04D27/002 , F04D27/0261 , F04D29/462 , F04D29/464 , F05D2250/52 , F25B1/00 , F25B1/053 , F25B1/10 , F25B2600/0253 , Y02B30/741
摘要： A refrigeration system includes a chiller having a refrigerant loop. A compressor is part of and in fluid communication with the refrigerant loop. The compressor has two stages, one with a variable geometry diffuser and one with a fixed geometry diffuser.
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公开(公告)号：US20180131308A1
公开(公告)日：2018-05-10
申请号：US15574504
申请日：2015-08-04
IPC分类号： H02P27/08 , H02P3/22 , H02P29/024 , F25B49/02 , G05F1/70
CPC分类号： H02P27/085 , F25B13/00 , F25B49/025 , F25B2600/021 , G05F1/70 , H02P3/22 , H02P6/20 , H02P21/26 , H02P21/34 , H02P29/027 , H02P29/032 , Y02B30/741
摘要： A synchronous motor control device includes a voltage detector, a current detector, an inverter main circuit, and an inverter control unit. The inverter control unit includes: a phase current reproduction unit that reproduces a direct current into phase currents flowing to a permanent magnet synchronous motor; a current coordinate transformation unit that transforms the reproduced phase current into current on a control coordinate axis of a rotating coordinate system; a current control unit that calculates a voltage command value of the permanent magnet synchronous motor in such a manner that the current on the control coordinate axis equals a specific value; and a limiter unit that limits the value of the voltage command value.
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公开(公告)号：US20180106510A1
公开(公告)日：2018-04-19
申请号：US15786444
申请日：2017-10-17
申请人： SolarXWorks, LLC
发明人： Scott BROWN , Blake BARTHELMESS , Tor HARTMANN , Donald McGRAW
CPC分类号： F25B27/005 , F25B25/005 , F25B27/00 , F25B49/02 , F25B49/025 , F25B2600/0251 , F25B2600/0253 , F25B2700/15 , F25B2700/2104 , Y02B30/741
摘要： A DC-powered refrigeration system may include controls configured to switch between available DC power supplies and manage the refrigeration system in accordance with one or more methods. The one or more methods of the control system may include multiple tiers of power management, including, e.g., maximization of power usage when on a photovoltaic power supply to subcool a refrigerated load.
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公开(公告)号：US09939181B2
公开(公告)日：2018-04-10
申请号：US14555248
申请日：2014-11-26
CPC分类号： F25B27/02 , F25B13/00 , F25B47/022 , F25B49/02 , F25B2313/02542 , F25B2313/02543 , F25B2341/0662 , F25B2600/0253 , F25B2600/0261 , F25B2600/2513 , F25D21/125 , Y02B30/741
摘要： Systems and methods are disclosed that may include recovering heat from a generator to defrost the heat exchanger by passing a heat transfer fluid from the generator through a recovery heat exchanger that is configured to promote heat transfer between the heat transfer fluid and a refrigerant flowing therethrough, reducing a restriction of the refrigerant, reducing an airflow through the heat exchanger, and delivering the heated refrigerant to the heat exchanger. Systems and methods may also include recovering heat from an exhaust of the generator to deter the formation of frozen condensate on the outdoor heat exchanger by diverting at least a portion of a hot exhaust fluid discharged by the generator onto the outdoor heat exchanger.
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公开(公告)号：US09893670B2
公开(公告)日：2018-02-13
申请号：US15473688
申请日：2017-03-30
发明人： Rei Kasahara , Dongsheng Li
IPC分类号： H02M5/42 , H02M7/68 , H02M3/24 , H02M7/44 , H02M7/521 , H02P27/08 , H02P6/18 , H02P21/24 , H02P6/04 , F25B49/02
CPC分类号： H02P27/08 , F25B13/00 , F25B49/025 , F25B2313/0293 , F25B2313/0294 , F25B2500/05 , F25B2600/021 , F25B2600/11 , F25B2700/15 , H02P6/04 , H02P6/18 , H02P21/24 , Y02B30/741
摘要： A controller of an inverter control apparatus includes an A/D conversion unit that performs digital conversion of an input signal when a signal for either an A/D converter start trigger or an A/D converter start trigger is input thereinto; a first inverter control unit that generates the A/D converter start trigger which starts the A/D conversion unit, based on A/D converter start timing information and a first carrier signal; a second inverter control unit that generates the A/D converter start trigger which starts the A/D conversion unit, based on A/D converter start timing information and a second carrier signal; and an A/D start factor selection unit that receives either the A/D converter start trigger or the A/D converter start trigger and selects an A/D start factor at a predetermined period timing of an operation period of the first carrier signal and the second carrier signal.
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