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    Determining method of high pressure of refrigeration cycle apparatus
    2.
    发明授权
    Determining method of high pressure of refrigeration cycle apparatus 失效
    制冷循环装置高压确定方法

    公开(公告)号：US06854283B2

    公开(公告)日：2005-02-15

    申请号：US10658421

    申请日：2003-09-10

    申请人： Kazuo Nakatani ,  Yoshikazu Kawabe ,  Noriho Okaza ,  Yuji Inoue ,  Akira Hiwata

    发明人： Kazuo Nakatani ,  Yoshikazu Kawabe ,  Noriho Okaza ,  Yuji Inoue ,  Akira Hiwata

    IPC分类号： F25B1/00 ,  F25B9/00 ,  F25B9/06 ,  F25B11/02 ,  F25B13/00 ,  F25B40/00 ,  F28B9/00

    CPC分类号： F25B9/008 ,  F25B9/06 ,  F25B13/00 ,  F25B40/00 ,  F25B2309/061 ,  F25B2400/04 ,  F25B2600/17 ,  F25B2600/2501

    摘要： It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range by using an expander which is operated in accordance with a flowing direction of refrigerant. A determining method of a high pressure of a refrigeration cycle apparatus in which a refrigeration cycle uses carbon dioxide as refrigerant and has a compressor, an outdoor heat exchanger, an expander and an indoor heat exchanger, and the refrigeration cycle including a bypass circuit provided in parallel to said expander, and a control valve which adjusts a flow rate of refrigerant flowing through said bypass circuit, said compressor being driven by power recover by said expander, wherein if an optimal high pressure of a first refrigeration cycle flowing through said expander and a second refrigeration cycle flowing through said bypass circuit is defined as Ph, and a bypass amount ratio flowing through said bypass circuit in said Ph is defined as Rb0, and a maximum refrigeration cycle efficiency of said first refrigeration cycle in said Ph is defined as COPe, and a maximum refrigeration cycle efficiency of said second refrigeration cycle in said Ph is defined as COPb, the optimal high pressure Ph which maximizes (1−Rb0)×COPe+Rb0×COPb is determined.

    摘要翻译： 本发明的一个目的是减小密度比恒定的约束尽可能小，并且通过使用根据制冷剂的流动方向操作的膨胀机在宽的运行范围内获得高功率回收效果 。 一种制冷循环装置的高压确定方法，其中制冷循环使用二氧化碳作为制冷剂，并具有压缩机，室外热交换器，膨胀机和室内热交换器，并且制冷循环包括设置在旁路回路 平行于所述膨胀机的调节阀，调节流过所述旁通回路的制冷剂的流量的控制阀，所述压缩机由所述膨胀机的功率回收驱动，其中如果流过所述膨胀机的第一制冷循环的最佳高压和 流过所述旁路回路的第二制冷循环被定义为Ph，并且流过所述Ph中的所述旁路回路的旁路量比定义为Rb0，并且将所述Ph中的所述第一制冷循环的最大制冷循环效率定义为COPe， 并且所述Ph中的所述第二制冷循环的最大制冷循环效率被定义为COPb，最佳的高 确定使（1-Rb0）xCOPe + Rb0xCOPb最大化的h压力Ph。

    Double-pipe heat exchanger
    5.
    发明授权
    Double-pipe heat exchanger 失效
    双管换热器

    公开(公告)号：US06920917B2

    公开(公告)日：2005-07-26

    申请号：US10728788

    申请日：2003-12-08

    申请人： Yuji Inoue ,  Noriho Okaza ,  Kazuo Nakatani ,  Yoshikazu Kawabe

    发明人： Yuji Inoue ,  Noriho Okaza ,  Kazuo Nakatani ,  Yoshikazu Kawabe

    IPC分类号： F28F1/00 ,  F28D7/10 ,  F28F1/06 ,  F28F1/40 ,  F28F13/12

    CPC分类号： F28F1/06 ,  F28D7/106

    摘要： It is an object of the invention to provide an inexpensive double-pipe heat exchanger having high performance and comprising an inner pipe and an outer pipe which constitute a double pipe without adding a heat-transfer facilitating material such as an inner fin. In the double-pipe heat exchanger having the inner pipe and the outer pipe, the outer pipe is dented from its outside toward its inside, thereby forming a plurality of projections which are dented toward the inner pipe. Examples of shapes of the projection are substantially conical shape, substantially truncated shape, substantially spherical surface shape, substantially cylindrical shape, substantially elliptic cylindrical shape and the like. The projections are disposed helically or in a staggered configuration such as to surround the inner pipe. With this structure, only by subjecting the outer pipe to simple working such as press working, it is possible to increase the turbulent flow of fluid flowing between the inner pipe and the outer pipe, and to facilitate heat transfer from fluid flowing in the inner pipe to fluid flowing between the inner pipe and the outer pipe.

    摘要翻译： 本发明的目的是提供一种具有高性能的便宜的双管式热交换器，并且包括内管和外管，其构成双管，而不添加诸如内翅片的传热促进材料。 在具有内管和外管的双管式热交换器中，外管从其外侧向内侧凹陷，从而形成向内管凹陷的多个突起。 突起的形状的实例基本上是圆锥形，基本上截头形状，基本上是球形表面形状，基本上圆柱形，基本上椭圆柱形等。 突出部螺旋地或以交错构造设置，以包围内管。 利用这种结构，只有通过对外管进行诸如冲压加工的简单加工，可以增加在内管和外管之间流动的流体的湍流，并且便于在内管中流动的流体的热传递 流体在内管和外管之间流动。

    Refrigerator
    6.
    发明授权
    Refrigerator 失效
    冰箱

    公开(公告)号：US07024879B2

    公开(公告)日：2006-04-11

    申请号：US10757397

    申请日：2004-01-15

    申请人： Kazuo Nakatani ,  Yoshikazu Kawabe ,  Yuji Inoue ,  Noriho Okaza

    发明人： Kazuo Nakatani ,  Yoshikazu Kawabe ,  Yuji Inoue ,  Noriho Okaza

    IPC分类号： F25B13/00

    CPC分类号： F25B1/10 ,  F25B9/008 ,  F25B13/00 ,  F25B31/006 ,  F25B2309/061 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2600/2509 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/21152

    摘要： In the case of gas injection, a discharging temperature is not reduced sufficiently, and if an amount of injection is increased, a liquid refrigerant flows into a cylinder and the liquid is compressed, and the reliability can not be ensured.A refrigerator wherein at least a compressor, a radiator, a first throttle apparatus and an evaporator are connected to one another in an annular form to constitute a main circuit of a refrigeration cycle, a refrigerant which can be brought into a supercritical state by the radiator during operation is charged into the refrigeration cycle, the refrigerator comprises an injection pipe for injecting the refrigerant on the side of an outlet of the radiator into a cylinder of the compressor.

    摘要翻译： 在气体注入的情况下，排出温度不能充分降低，如果喷射量增加，则液体制冷剂流入气缸并且液体被压缩，并且不能确保可靠性。 一种冰箱，其中至少一个压缩机，散热器，第一节流装置和蒸发器以环形形式彼此连接以构成制冷循环的主回路，制冷剂可通过散热器进入超临界状态 在操作期间，将制冷剂装入制冷循环中，所述冰箱包括用于将所述制冷剂在所述散热器的出口侧喷射到所述压缩机的气缸中的喷射管。

    Double-pipe heat exchanger
    7.
    发明申请
    Double-pipe heat exchanger 失效

    公开(公告)号：US20050051310A1

    公开(公告)日：2005-03-10

    申请号：US10728788

    申请日：2003-12-08

    申请人： Yuji Inoue ,  Noriho Okaza ,  Kazuo Nakatani ,  Yoshikazu Kawabe

    发明人： Yuji Inoue ,  Noriho Okaza ,  Kazuo Nakatani ,  Yoshikazu Kawabe

    IPC分类号： F28F1/00 ,  F28D7/10 ,  F28F1/06 ,  F28F1/40 ,  F28F13/12 ,  F28F11/00

    CPC分类号： F28F1/06 ,  F28D7/106

    摘要： It is an object of the invention to provide an inexpensive double-pipe heat exchanger having high performance and comprising an inner pipe and an outer pipe which constitute a double pipe without adding a heat-transfer facilitating material such as an inner fin. In the double-pipe heat exchanger having the inner pipe and the outer pipe, the outer pipe is dented from its outside toward its inside, thereby forming a plurality of projections which are dented toward the inner pipe. Examples of shapes of the projection are substantially conical shape, substantially truncated shape, substantially spherical surface shape, substantially cylindrical shape, substantially elliptic cylindrical shape and the like. The projections are disposed helically or in a staggered configuration such as to surround the inner pipe. With this structure, only by subjecting the outer pipe to simple working such as press working, it is possible to increase the turbulent flow of fluid flowing between the inner pipe and the outer pipe, and to facilitate heat transfer from fluid flowing in the inner pipe to fluid flowing between the inner pipe and the outer pipe.

    Refrigeration cycle apparatus
    9.
    发明申请
    Refrigeration cycle apparatus 审中-公开
    制冷循环装置

    公开(公告)号：US20060260354A1

    公开(公告)日：2006-11-23

    申请号：US11410305

    申请日：2006-04-25

    申请人： Kazuo Nakatani ,  Noriho Okaza ,  Hideo Hirano ,  Yasushi Watanabe

    发明人： Kazuo Nakatani ,  Noriho Okaza ,  Hideo Hirano ,  Yasushi Watanabe

    IPC分类号： F25B41/00

    CPC分类号： F28D7/106 ,  F25B9/008 ,  F25B40/00 ,  F25B2309/061 ,  F25B2500/01 ,  F28D7/0041

    摘要： In a refrigeration cycle apparatus in which carbon dioxide is used as refrigerant and refractory oil is used as lubricating oil in a compressor, it is an object of the present invention to reduce influence of adhesion of lubricating oil to the internal heat exchanger, and to enhance the heat exchanging efficiency of the internal heat exchanger. A refrigeration cycle apparatus in which a compressor 11, a radiator 12, an expansion valve 13 and an evaporator 14 are connected to one another through tubes, said refrigeration cycle apparatus comprises an internal heat exchanger 30 for exchanging heat between a high pressure refrigerant which flows out from said radiator 12 and low pressure refrigerant which flows out from said evaporator 14, wherein carbon dioxide is used as the refrigerant, refractory oil is used as lubricating oil in said compressor 11, said internal heat exchanger 30 comprises a first heat exchanger tube 31 through which the high pressure refrigerant in a supercritical region flows and a second heat exchanger tube 32 through which the low pressure refrigerant flows, said first heat exchanger tube 31 is disposed in said second heat exchanger tube 32.

    摘要翻译： 在使用二氧化碳作为制冷剂的制冷循环装置中，在压缩机中使用耐火油作为润滑油时，本发明的目的是减少润滑油对内部热交换器的粘附的影响，并且增强 内部热交换器的热交换效率。 一种制冷循环装置，其中压缩机11，散热器12，膨胀阀13和蒸发器14通过管彼此连接，所述制冷循环装置包括用于在流动的高压制冷剂之间进行热交换的内部热交换器30 从所述散热器12和从所述蒸发器14流出的低压制冷剂，其中使用二氧化碳作为制冷剂，在所述压缩机11中使用耐火油作为润滑油，所述内部热交换器30包括第一热交换器管31 超临界区域中的高压制冷剂通过该流路和低压制冷剂流过的第二热交换管32，所述第一热交换器管31设置在所述第二热交换管32中。

    Liquid circulation heating system
    10.
    发明授权
    Liquid circulation heating system 有权
    液体循环供热系统

    公开(公告)号：US08661840B2

    公开(公告)日：2014-03-04

    申请号：US12693774

    申请日：2010-01-26

    申请人： Yasuhiko Isayama ,  Kazuo Nakatani ,  Takayuki Takatani ,  Noriho Okaza ,  Takashi Sawada ,  Yuuki Yamaoka ,  Masahiro Ohama

    发明人： Yasuhiko Isayama ,  Kazuo Nakatani ,  Takayuki Takatani ,  Noriho Okaza ,  Takashi Sawada ,  Yuuki Yamaoka ,  Masahiro Ohama

    IPC分类号： F25B27/00

    CPC分类号： F24D11/0221 ,  F24D3/18 ,  F24D19/1039 ,  F24D19/1045 ,  Y02B10/20 ,  Y02B10/70 ,  Y02B30/125

    摘要： A liquid circulation heating system performs air-heating by heating a liquid to produce a heated liquid and releasing heat of the heated liquid from a heating radiator. This liquid circulation heating system includes: a heat pump circuit for circulating a refrigerant, having a radiator for heating the liquid by radiating heat from the refrigerant; and a solar heating apparatus for heating the liquid by solar heat. In this liquid circulation heating system, a first passage passing through the radiator and a second passage passing through the solar heating apparatus are formed as passages through which the liquid flows to produce the heated liquid.

    摘要翻译： 液体循环加热系统通过加热液体来产生加热的液体并且从加热散热器释放加热的液体的热量来进行空气加热。 这种液体循环加热系统包括：用于循环制冷剂的热泵回路，具有用于通过从制冷剂中散热来加热液体的散热器; 以及通过太阳能加热液体的太阳能加热装置。 在这种液体循环加热系统中，通过散热器的第一通道和通过太阳能加热设备的第二通道形成为液体流过的通道，以产生加热的液体。