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公开(公告)号：US08327661B2
公开(公告)日：2012-12-11
申请号：US12744439
申请日：2008-11-26
申请人： Shuji Fujimoto , Atsushi Yoshimi
发明人： Shuji Fujimoto , Atsushi Yoshimi
IPC分类号： F25B1/10
CPC分类号： F25B13/00 , F25B9/008 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： A refrigeration apparatus uses a refrigerant that operates in a region including critical processes, and includes a compression mechanism having first and second compressors, a heat-source-side heat exchanger, an expansion mechanism, a utilization-side heat exchanger, an intercooler, and an intermediate refrigerant pipe. The first compressor has a first low-pressure compression element and a first high-pressure compression element to increase pressure of refrigerant more than the first low-pressure compression element. The second compressor has a second low-pressure compression element and a second high-pressure compression element to increase pressure of refrigerant more than the second low-pressure compression element. The intermediate refrigerant pipe causes refrigerant discharged by the first and second low-pressure compression elements to pass through the intercooler and be sucked into first and second high-pressure the compression elements. The intake sides of the first and second low-pressure compression elements are connected. The discharge sides of the first and second high-pressure compression elements merge.
摘要翻译： 制冷装置使用在包括关键工序的区域中工作的制冷剂，并且包括具有第一和第二压缩机的压缩机构，热源侧热交换器，膨胀机构，利用侧热交换器，中间冷却器和 中间制冷剂管。 第一压缩机具有第一低压压缩元件和第一高压压缩元件，以使第一低压压缩元件和第一高压压缩元件相比第一低压压缩元件增加制冷剂的压力。 第二压缩机具有第二低压压缩元件和第二高压压缩元件，以增加制冷剂的压力，而不是第二低压压缩元件。 中间制冷剂管使得由第一和第二低压压缩元件排出的制冷剂通过中间冷却器，并被吸入第一和第二高压压缩元件。 连接第一和第二低压压缩元件的进气侧。 第一和第二高压压缩元件的排出侧合并。
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公开(公告)号：US20110005270A1
公开(公告)日：2011-01-13
申请号：US12919047
申请日：2009-02-25
CPC分类号： F25B1/10 , F25B9/008 , F25B13/00 , F25B2309/061 , F25B2313/021 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/13 , F25B2600/17
摘要： A refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, a usage-side heat exchanger, a switching mechanism and an intermediate heat exchanger. Refrigerant discharged from a first-stage compression element is sequentially compressed by a second-stage compression element. Each of the heat source-side heat exchanger and the usage-side heat exchanger functions an evaporator or radiator. The switching mechanism is configured to switch between a cooling operation state and a heating operation state. The intermediate heat exchanger is configured to cool refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element when the switching mechanism has been set to the cooling operation state, and to evaporate refrigerant whose heat is radiated in the usage-side heat exchanger when the switching mechanism has been set to the heating operation state.
摘要翻译： 制冷装置包括压缩机构，热源侧热交换器，利用侧热交换器，切换机构和中间热交换器。 从第一级压缩元件排出的制冷剂被后级压缩元件依次压缩。 热源侧热交换器和利用侧热交换器的功能是蒸发器或散热器。 切换机构被配置为在制冷运转状态和制热运转状态之间切换。 中间热交换器构成为，在将切换机构设定为制冷运转状态时，冷却从前级侧压缩部件排出的制冷剂，并将其吸入后级侧压缩部件，使其在使用中散热的制冷剂蒸发 当切换机构已经被设置为制热操作状态时。
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公开(公告)号：US20100251761A1
公开(公告)日：2010-10-07
申请号：US12744451
申请日：2008-11-27
申请人： Atsushi Yoshimi , Shuji Fujimoto
发明人： Atsushi Yoshimi , Shuji Fujimoto
IPC分类号： F25B39/02
CPC分类号： F25B13/00 , F25B1/10 , F25B9/008 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： A refrigeration apparatus uses a refrigerant that operates in a supercritical range. The refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, a switching mechanism, an intercooler, a bypass tube, and an injection tube. The switching mechanism is configured to switch between cooling and heating operation states. When the switching mechanism is switched to the cooling operation state to allow refrigerant to flow to the heat source-side heat exchanger and a reverse cycle defrosting operation for defrosting the heat source-side heat exchanger is performed, the refrigerant is caused to flow to the heat source-side heat exchanger, the intercooler and the injection tube. After the defrosting of the intercooler is detected as being complete, the bypass tube is used so as to ensure that the refrigerant does not flow to the intercooler and the injection valve is controlled so that the opening degree is increased.
摘要翻译： 制冷装置使用在超临界范围内工作的制冷剂。 制冷装置包括压缩机构，热源侧热交换器，膨胀机构，利用侧热交换器，切换机构，中间冷却器，旁通管和注入管。 切换机构被配置为在冷却和制热操作状态之间切换。 当切换机构切换到制冷运转状态以允许制冷剂流向热源侧热交换器时，进行用于使热源侧热交换器除霜的逆循环除霜运转时，使制冷剂流向 热源侧热交换器，中冷器和注射管。 检测到中间冷却器的除霜完成后，使用旁通管，以确保制冷剂不会流到中间冷却器，并且控制喷射阀以使开度增大。
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公开(公告)号：US20100242529A1
公开(公告)日：2010-09-30
申请号：US12744249
申请日：2008-11-26
CPC分类号： F25B9/008 , F25B1/10 , F25B13/00 , F25B31/004 , F25B2309/061 , F25B2400/072 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： A refrigeration apparatus uses a refrigerant that operates in a supercritical range, and includes a compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, an intercooler and an intermediate oil separation mechanism. The compression mechanism has a plurality of compression elements, and is configured and arranged so that refrigerant discharged from a first-stage compression element is sequentially compressed by a second-stage compression element. The intercooler is configured and arranged to cool refrigerant flowing through an intermediate refrigerant tube that draws refrigerant discharged from the first-stage compression element into the second-stage compression element. The intermediate oil separation mechanism is configured and arranged to separate a refrigeration oil from the refrigerant discharged from the first-stage compression element. The intermediate oil separation mechanism is arranged at a section of the intermediate refrigerant tube between the first-stage compression element and an inlet of the intercooler.
摘要翻译： 制冷装置使用在超临界范围内工作的制冷剂，包括压缩机构，热源侧热交换器，膨胀机构，利用侧热交换器，中间冷却器和中间油分离机构。 压缩机构具有多个压缩元件，并且被构造和布置成使得从后级压缩元件排出的制冷剂被后级压缩元件依次压缩。 中间冷却器被构造和布置成冷却流过中间制冷剂管的制冷剂，所述中间制冷剂管将从后级压缩元件排出的制冷剂吸入后级压缩元件。 中间油分离机构被构造和布置成将冷冻机油从与前级压缩元件排出的制冷剂分离。 中间油分离机构设置在中间制冷剂管的中间冷却器的入口之间的中间制冷剂管的一段。
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公开(公告)号：US08327662B2
公开(公告)日：2012-12-11
申请号：US12744451
申请日：2008-11-27
申请人： Atsushi Yoshimi , Shuji Fujimoto
发明人： Atsushi Yoshimi , Shuji Fujimoto
IPC分类号： F25B1/10
CPC分类号： F25B13/00 , F25B1/10 , F25B9/008 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： A refrigeration apparatus uses a refrigerant that operates in a supercritical range. The refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, a switching mechanism, an intercooler, a bypass tube, and an injection tube. The switching mechanism is configured to switch between cooling and heating operation states. When the switching mechanism is switched to the cooling operation state to allow refrigerant to flow to the heat source-side heat exchanger and a reverse cycle defrosting operation for defrosting the heat source-side heat exchanger is performed, the refrigerant is caused to flow to the heat source-side heat exchanger, the intercooler and the injection tube. After the defrosting of the intercooler is detected as being complete, the bypass tube is used so as to ensure that the refrigerant does not flow to the intercooler and the injection valve is controlled so that the opening degree is increased.
摘要翻译： 制冷装置使用在超临界范围内工作的制冷剂。 制冷装置包括压缩机构，热源侧热交换器，膨胀机构，利用侧热交换器，切换机构，中间冷却器，旁通管和注入管。 切换机构被配置为在冷却和制热操作状态之间切换。 当切换机构切换到制冷运转状态以允许制冷剂流向热源侧热交换器时，进行用于使热源侧热交换器除霜的逆循环除霜运转时，使制冷剂流向 热源侧热交换器，中冷器和注射管。 检测到中间冷却器的除霜完成后，使用旁通管，以确保制冷剂不会流到中间冷却器，并且控制喷射阀以使开度增大。
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公开(公告)号：US20110048055A1
公开(公告)日：2011-03-03
申请号：US12990528
申请日：2009-04-30
申请人： Shuji Fujimoto , Atsushi Yoshimi
发明人： Shuji Fujimoto , Atsushi Yoshimi
CPC分类号： F25B1/10 , F25B13/00 , F25B45/00 , F25B2313/0272 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/23
摘要： A refrigeration apparatus includes a multi-stage compression mechanism, heat source-side and usage side heat exchangers each operable as a radiator/evaporator, a switching mechanism switchable between cooling and heating operation states, a second-stage injection tube, an intermediate heat exchanger and an intermediate heat exchanger bypass tube. The intermediate heat exchanger bypass tube ensures that refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element is not cooled by the intermediate heat exchanger during a heating operation. Injection rate optimization controls a flow rate of refrigerant returned to the second-stage compression element through the second-stage injection tube so that an injection ratio is greater during the heating operation than during a cooling operation. The injection ratio is a ratio of flow rate of the refrigerant returned to the second-stage compression element through the second-stage injection tube relative to flow rate of the refrigerant discharged from the compression mechanism.
摘要翻译： 一种制冷装置，包括多级压缩机构，能够作为散热器/蒸发器的热源侧和使用侧热交换器，能够在冷却和制热运转状态之间切换的切换机构，后级侧喷射管，中间热交换器 和中间热交换器旁通管。 中间热交换器旁通管确保在加热操作期间，中间热交换器不会冷却从后级侧压缩元件排出并被吸入后级侧压缩元件的制冷剂。 喷射速率优化控制通过后级喷射管返回到后级侧压缩元件的制冷剂的流量，使得在加热操作期间喷射比在冷却操作期间更大。 喷射比是相对于从压缩机构排出的制冷剂的流量，通过后级侧喷射管返回到后级侧压缩部件的制冷剂的流量比。
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公开(公告)号：US08863545B2
公开(公告)日：2014-10-21
申请号：US12990528
申请日：2009-04-30
申请人： Shuji Fujimoto , Atsushi Yoshimi
发明人： Shuji Fujimoto , Atsushi Yoshimi
CPC分类号： F25B1/10 , F25B13/00 , F25B45/00 , F25B2313/0272 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/23
摘要： A refrigeration apparatus includes a multi-stage compression mechanism, heat source-side and usage side heat exchangers each operable as a radiator/evaporator, a switching mechanism switchable between cooling and heating operation states, a second-stage injection tube, an intermediate heat exchanger and an intermediate heat exchanger bypass tube. The intermediate heat exchanger bypass tube ensures that refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element is not cooled by the intermediate heat exchanger during a heating operation. Injection rate optimization controls a flow rate of refrigerant returned to the second-stage compression element through the second-stage injection tube so that an injection ratio is greater during the heating operation than during a cooling operation. The injection ratio is a ratio of flow rate of the refrigerant returned to the second-stage compression element through the second-stage injection tube relative to flow rate of the refrigerant discharged from the compression mechanism.
摘要翻译： 一种制冷装置，具备多级压缩机构，能够作为散热器/蒸发器的热源侧和使用侧热交换器，能够在冷却和制热运转状态之间切换的切换机构，后级侧喷射管，中间热交换器 和中间热交换器旁通管。 中间热交换器旁通管确保在加热操作期间，中间热交换器不会冷却从后级侧压缩元件排出并被吸入后级侧压缩元件的制冷剂。 喷射速率优化控制通过后级喷射管返回到后级侧压缩元件的制冷剂的流量，使得在加热操作期间喷射比在冷却操作期间更大。 喷射比是相对于从压缩机构排出的制冷剂的流量，通过后级侧喷射管返回到后级侧压缩部件的制冷剂的流量比。
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公开(公告)号：US08356490B2
公开(公告)日：2013-01-22
申请号：US12744262
申请日：2008-11-26
申请人： Atsushi Yoshimi , Shuji Fujimoto
发明人： Atsushi Yoshimi , Shuji Fujimoto
IPC分类号： F25B13/00
CPC分类号： F25B9/008 , F25B1/10 , F25B13/00 , F25B47/022 , F25B2309/061 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： A refrigeration apparatus uses a refrigerant that operates in a supercritical range. The refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, a switching mechanism, an intercooler which functions as a cooler of refrigerant discharged from a first-stage compression element of the compression mechanism and drawn into a second-stage compression element of the compression mechanism, and an intercooler bypass tube. The switching mechanism is configured to switch between cooling and heating operation states in which refrigerant is circulated differently. When a defrosting operation for defrosting the heat source-side heat exchanger is performed, refrigerant flows to the heat source-side heat exchanger and the intercooler. After defrosting of the intercooler is detected as being complete, the intercooler bypass tube is used to ensure that the refrigerant does not flow to the intercooler.
摘要翻译： 制冷装置使用在超临界范围内工作的制冷剂。 制冷装置包括压缩机构，热源侧热交换器，膨胀机构，利用侧热交换器，切换机构，作为从第一级压缩元件排出的制冷剂的冷却器的中间冷却器 压缩机构并被压入压缩机构的后级压缩元件，以及中间冷却器旁通管。 切换机构被构造成在制冷剂不同地循环的冷却和制热操作状态之间切换。 当进行用于除热的热源侧热交换器的除霜运转时，制冷剂流向热源侧热交换器和中间冷却器。 检测到中间冷却器的除霜完成后，中间冷却器旁通管用于确保制冷剂不会流入中间冷却器。
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公开(公告)号：US20120000237A1
公开(公告)日：2012-01-05
申请号：US13256270
申请日：2010-03-10
申请人： Takuro Yamada , Noriyuki Okuda , Shuji Fujimoto , Atsushi Yoshimi
发明人： Takuro Yamada , Noriyuki Okuda , Shuji Fujimoto , Atsushi Yoshimi
IPC分类号： F25B30/00
CPC分类号： F25B9/008 , F25B1/10 , F25B40/00 , F25B2309/061 , F25B2339/047 , F25B2400/072 , F25B2400/13 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152
摘要： A heat pump system includes a heat pump circuit, a heat load circuit, first and second heat exchangers, a flow rate adjustment element, and a controller. The heat pump circuit circulates primary refrigerant through a low and high stage-side compression elements, an expansion element and an evaporator. The heat load circuit circulates a first fluid and has a first and second branching portions, first and second branching channels, and a heat-load-processing section. The first and second heat exchangers perform heat exchange between the primary refrigerant and the first fluid. Flow rate of the first fluid in the first and/or second branching channel is adjustable. The controller performs flow rate adjustment control so as to maintain a state in which a predetermined temperature condition is satisfied, or to reduce a difference between the temperature of the first fluid flowing through portions of the first and second branching channels.
摘要翻译： 热泵系统包括热泵回路，热负荷回路，第一和第二热交换器，流量调节元件和控制器。 热泵电路使一级制冷剂循环通过低阶段和高阶段侧压缩元件，膨胀元件和蒸发器。 热负载电路使第一流体循环并具有第一和第二分支部分，第一和第二分支通道以及热负荷处理部分。 第一和第二热交换器在一次制冷剂和第一流体之间进行热交换。 第一和/或第二分支通道中的第一流体的流量是可调节的。 控制器执行流量调节控制，以保持满足预定温度条件的状态，或者减少流过第一和第二分支通道的部分的第一流体的温度之间的差异。
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公开(公告)号：US20110036119A1
公开(公告)日：2011-02-17
申请号：US12989863
申请日：2009-04-30
申请人： Shuji Fujimoto , Atsushi Yoshimi , Takahiro Yamaguchi , Toru Inazuka , Kazuhiro Furusho , Mitsuharu Uchida , Hidehiko Kataoka
发明人： Shuji Fujimoto , Atsushi Yoshimi , Takahiro Yamaguchi , Toru Inazuka , Kazuhiro Furusho , Mitsuharu Uchida , Hidehiko Kataoka
IPC分类号： F25B1/10
CPC分类号： F25B9/008 , F25B1/10 , F25B13/00 , F25B40/00 , F25B2309/061 , F25B2313/02741 , F25B2400/13 , F25B2600/2507
摘要： A refrigerating apparatus, where refrigerant reaches a supercritical state in at least part of a refrigeration cycle, includes at least one expansion mechanism, an evaporator connected to the expansion mechanism, first and second sequential compression elements, a radiator connected to the discharge side of the second compression element, a first refrigerant pipe interconnecting the radiator and the expansion mechanism, a heat exchanger arranged to cause heat exchange between the first refrigerant pipe and another refrigerant pipe. Preferably, a heat exchanger switching mechanism is switchable so that refrigerant flows in the first refrigerant pipe through the first heat exchanger or in a heat exchange bypass pipe connected to the first refrigerant pipe. Alternatively, a heat exchanger switching mechanism increases refrigerant flowing through a second expansion mechanism when an air temperature at the evaporator and/or a compressed refrigerant temperature detected is higher and/or lower than predetermined values.
摘要翻译： 一种制冷剂在制冷循环的至少一部分达到超临界状态的制冷装置包括至少一个膨胀机构，连接到膨胀机构的蒸发器，第一和第二顺序压缩元件，连接到制冷循环的排出侧的散热器 第二压缩元件，将散热器和膨胀机构相互连接的第一制冷剂管，布置成在第一制冷剂管与另一制冷剂管之间进行热交换的热交换器。 优选地，热交换器切换机构是可切换的，使得制冷剂在第一制冷剂管道中通过第一热交换器或连接到第一制冷剂管道的热交换旁通管流动。 或者，当蒸发器的空气温度和/或检测到的压缩制冷剂温度高于和低于预定值时，热交换器切换机构增加流过第二膨胀机构的制冷剂。
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