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公开(公告)号：US06452290B1
公开(公告)日：2002-09-17
申请号：US09902906
申请日：2001-07-11
IPC分类号： H02J100
CPC分类号： H02M7/493 , H02M7/5387 , Y10T307/707
摘要： An inverter parallel operation system includes a first inverter adapted to control the output frequency thereof by controlling a control element. The system includes the inverter, and a second inverter and subsequent inverters adapted to control the output frequency thereof by controlling control elements comprising the inverters. Power being fed to a common load after a choke coil provided on the output-side end of a first filter provided on the output side of the first inverter has been connected to a choke coil provided on the output-side end of the second filter on the output side of the second and subsequent inverters. The improvement comprising controlling effective powers output by the first inverter, and the second and subsequent inverters by detecting the effective powers output by both the inverters and controlling any one or both of the output frequencies predetermined in accordance with the effective powers.
摘要翻译： 逆变器并联运行系统包括：第一逆变器，其适于通过控制控制元件来控制其输出频率。 该系统包括逆变器，以及适于通过控制包括逆变器的控制元件来控制其输出频率的第二逆变器和后续逆变器。 在设置在第一逆变器的输出侧的第一滤波器的输出侧端部的扼流线圈已经连接到设置在第二滤波器的输出侧端部上的扼流圈之后，将功率馈送到公共负载， 第二个和后续的逆变器的输出侧。 该改进包括通过检测由两个反相器输出的有效功率并控制根据有效功率预定的任何一个或两个输出频率来控制由第一反相器和第二和随后的反相器输出的有效功率。
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公开(公告)号：US06771522B2
公开(公告)日：2004-08-03
申请号：US10457722
申请日：2003-06-10
IPC分类号： G09F170
CPC分类号： H02M7/493 , H02M5/4505 , H02M5/451 , H02M5/4585 , H02P9/305
摘要： An inverter includes a DC power supply circuit, an inverter circuit having a plurality of switching elements and switching an output of the DC power supply circuit on the basis of a PWM signal to deliver a high-frequency voltage, a filter circuit converting the high-frequency voltage to a substantially sinusoidal AC voltage, a power detector detecting an effective or wattless power of the AC power, a phase angle calculator calculating a phase angle of current relative to voltage from the detected effective or wattless power, a phase detector detecting a leading or lagging state of the phase angle, and a controller decreasing a frequency of the output voltage when the phase detector detects the leading state of the phase angle, the controller increasing the frequency of the output voltage when the phase detector detects the lagging state of the phase angle.
摘要翻译： 逆变器包括直流电源电路，具有多个开关元件的逆变器电路，并且基于PWM信号切换直流电源电路的输出以提供高频电压;滤波电路， 频率电压到基本正弦交流电压，功率检测器检测交流电源的有效或无功功率;相位角计算器，根据检测到的有效或无功功率计算电流相对于电压的相位角;相位检测器，检测前导 或相位角的滞后状态，以及当相位检测器检测到相位角的引导状态时控制器降低输出电压的频率，当相位检测器检测到相位角的滞后状态时，控制器增加输出电压的频率 相位角。
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公开(公告)号：US20070144190A1
公开(公告)日：2007-06-28
申请号：US10584205
申请日：2004-11-30
CPC分类号： F25D29/00 , F25B1/10 , F25B5/02 , F25B5/04 , F25B2400/13 , F25B2400/23 , F25B2600/021 , F25B2600/0253 , F25B2600/112 , F25B2600/2511 , F25B2700/173 , F25D11/022 , F25D17/065 , F25D2317/0682 , F25D2400/04 , F25D2700/122 , Y02B30/741 , Y02B30/743 , Y02B40/32
摘要： A refrigerator in which a two-stage-compression mode power-variable refrigerant circuit having a freezer cooler and fresh-food cooler is controlled in accordance with information on temperature in the fresh-food compartment. Thus, each of the freezer and fresh-food compartment is properly controlled at a temperature for storing. The refrigerant circuit includes an inverter-driven power-variable compressor having a low-pressure compression element and a high-pressure compression element, a switching valve disposed downstream of a condenser receiving gas refrigerant discharged from the compressor and selecting and controlling channel and flow rate of the refrigerant, and a freezer cooler and a fresh-food cooler, each connected with the switching valve through a pressure reducer. A frequency of the compressor is decided by a temperature in the freezer compartment and its target temperature.
摘要翻译： 根据关于新鲜食品室内的温度的信息，控制具有冷冻机和新鲜食品冷却器的两级压缩模式功率可变制冷剂回路的冰箱。 因此，在储存温度下适当地控制每个冷冻室和新鲜食物隔室。 制冷剂回路包括具有低压压缩元件和高压压缩元件的逆变器驱动的动力可变压缩机，设置在从压缩机排出的接收气体制冷剂的冷凝器的下游的切换阀，并选择并控制通道和流量 的制冷剂，以及冷冻机和新鲜食品冷却器，每个都通过减压器与切换阀相连。 压缩机的频率由冷冻室中的温度和目标温度决定。
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公开(公告)号：US07770406B2
公开(公告)日：2010-08-10
申请号：US10580835
申请日：2004-11-22
CPC分类号： F25D29/00 , F25B1/10 , F25B5/02 , F25B2400/052 , F25B2400/054 , F25B2500/31 , F25B2600/112 , F25B2600/2511 , F25D11/022 , F25D2400/04 , Y02B30/743 , Y02B40/32
摘要： A high-pressure side discharge port of a two-stage compressor (12A) and a condenser (14A) are connected, condenser (14A) and a PMV (15A) are connected, a refrigerating side exit of PMV (15A) is connected to a medium pressure side suction port of two-stage compressor (12A) via an R capillary tube (16A) and an F evaporator (18A), connected to an F evaporator (26A) via an F capillary tube (24A), F evaporator (26A) is connected to a low-pressure side suction port of two stage compressor (12A) via a low-pressure suction pipe (28A), PMV (15A) can switch a simultaneous cooling mode and a freezing mode, and in the simultaneous cooling mode, a refrigerant flow rate toward R evaporator (18A) is adjusted by PMV (15A), and thereby a temperature difference control is performed so as to make a difference between an entrance temperature and an exit temperature of R evaporator (18A) equal to a preset temperature difference (for example, 4° C.).
摘要翻译： 连接两级压缩机12A和冷凝器14A的高压侧排出口，连接冷凝器14A和PMV 15A，将PMV（15A）的制冷侧出口与 经由F毛细管（16A）和F蒸发器（18A）的两级压缩机（12A）的中压侧吸入口经由F毛细管（24A）与F蒸发器（24A）连接到F蒸发器（26A） 26A）通过低压吸管（28A）与二级压缩机（12A）的低压侧吸入口连接，PMV（15A）可切换同时冷却模式和冷冻模式，同时冷却 通过PMV（15A）调节朝向R蒸发器（18A）的制冷剂流量，由此进行温度差控制，以使R蒸发器（18A）的入口温度和出口温度之间的差等于 预设的温度差（例如4℃）。
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公开(公告)号：US07475557B2
公开(公告)日：2009-01-13
申请号：US10547393
申请日：2004-11-17
CPC分类号： F25B1/10 , F25B5/02 , F25B2400/052 , F25B2400/054 , F25B2600/2511 , F25D11/022 , F25D2400/04
摘要： The invention provides a refrigerator having a two-stage compression compressor capable of performing efficient cooling of a both a refrigerator compartment and a freezer compartment. A high-pressure delivery outlet of a two-stage compression compressor 12 is connected to a condenser 14, the condenser 14 is connected to a three-way valve 15, a first outlet of the three-way valve 15 is connected via an R capillary tube 16 and an R evaporator 18 to an intermediate-pressure intake of the two-stage compression compressor 12, is connected and via an F capillary tube 24 to an F evaporator 26, the F evaporator is connected to a low-pressure intake of the two-stage compression compressor 12 via a low-pressure suction pipe 28, the three-way valve 15 can switch between a simultaneous cooling mode and a freezer mode, and when in the simultaneous cooling mode the interior temperature of the refrigerator compartment 2 falls to a predetermined temperature it switches to the freezer mode.
摘要翻译： 本发明提供一种具有能够对冷藏室和冷冻室进行高效冷却的两级压缩压缩机的冰箱。 两级压缩机12的高压输出口与冷凝器14连接，冷凝器14与三通阀15连接，三通阀15的第一出口经由R毛细管 管16和R蒸发器18连接到两级压缩机12的中压进口，并通过F毛细管24连接到F蒸发器26，F蒸发器连接到低压进气口 两级压缩机12通过低压吸入管28，三通阀15可以在同时冷却模式和冷冻模式之间切换，并且当处于同时冷却模式时，冷藏室2的内部温度下降到 预定温度切换到冷冻模式。
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公开(公告)号：US20080190125A1
公开(公告)日：2008-08-14
申请号：US10580835
申请日：2004-11-22
CPC分类号： F25D29/00 , F25B1/10 , F25B5/02 , F25B2400/052 , F25B2400/054 , F25B2500/31 , F25B2600/112 , F25B2600/2511 , F25D11/022 , F25D2400/04 , Y02B30/743 , Y02B40/32
摘要： A high-pressure side discharge port of a two-stage compressor (12A) and a condenser (14A) are connected, condenser (14A) and a PMV (15A) are connected, a refrigerating side exit of PMV (15A) is connected to a medium pressure side suction port of two-stage compressor (12A) via an R capillary tube (16A) and an F evaporator (18A), connected to an F evaporator (26A) via an F capillary tube (24A), F evaporator (26A) is connected to a low-pressure side suction port of two-stage compressor (12A) via a low-pressure suction pipe (28A), PMV (15A) can switch a simultaneous cooling mode and a freezing mode, and in the simultaneous cooling mode, a refrigerant flow rate toward R evaporator (18A) is adjusted by PMV (15A), and thereby a temperature difference control is performed so as to make a difference between an entrance temperature and an exit temperature of R evaporator (18A) equal to a preset temperature difference (for example, 4° C.).A controller (22), on the basis of the detection condition of a temperature sensor (23) for a freezing chamber and a temperature sensor (24) for a refrigerating chamber, controls a freezing cycle device (10). Here, controller (22) controls an opening of a regulating valve (12) so as to make a superheat amount which is a difference between an exit temperature and an entrance temperature of a refrigerating evaporator (5) equal to a target superheat amount, and thereby adjusts a refrigerant flow rate to refrigerating evaporator (5) in a limited state.In this case, when a power is turned on, the entrance temperature and the exit temperature of refrigerating evaporator (5) are the same, so that controller (22), when the power is turned on, calibrates detected temperatures of an entrance temperature sensor (27) and an exit temperature sensor (26) so as to coincide with each other, and thereby can execute surely the subsequent limiting adjustment of regulating valve (12) on the basis of the superheat amount.Further, in this case, when a refrigerant supply to refrigerating evaporator (5) is stopped and the temperature of refrigerating evaporator (5) rises suddenly, controller 22 increases an opening of a valve opening (42) to refrigerating evaporator (5) of regulating valve (12) to a predetermined return value, so that the refrigerant supply amount to refrigerating evaporator (5) is increased at a stretch, and thus the refrigerating evaporator can be cooled quickly.A refrigerator having a two-stage compressor (12A) for cooling efficiently both a refrigerating chamber (2A) and a freezing chamber (5A) will be provided.When limiting and adjusting a refrigerant flow rate to one evaporator according to an opening of a valve body so as to make a superheat amount of one evaporator appropriate on the basis of the superheat amount which is a difference between an exit temperature and an entrance temperature of one evaporator, a refrigerator for detecting accurately the entrance temperature and the exit temperature of one evaporator will be provided.When limiting and adjusting a refrigerant flow rate to one evaporator according to an opening of a valve body, a refrigerator for causing no delay in a refrigerant supply to one evaporator will be provided.
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