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    • 5. 发明授权
    • Heat pump type hot water supply outdoor apparatus
    • 热泵式热水供应室外机
    • US08020393B2
    • 2011-09-20
    • US12360439
    • 2009-01-27
    • Kazuki OkadaTakahiro UshijimaKengo Takahashi
    • Kazuki OkadaTakahiro UshijimaKengo Takahashi
    • F25B49/02F25B41/04
    • F25B13/00F25B1/10F25B40/00F25B49/027F25B2341/0653F25B2341/066F25B2400/053F25B2400/054F25B2400/13F25B2400/16F25B2600/17F25B2600/21F25B2600/2509F25B2600/2513F25B2700/1931F25B2700/21174Y02B30/72
    • A heat pump type hot water supply outdoor apparatus, in a compressor, a water heat exchanger, a first expansion valve, a medium pressure receiver, a second expansion valve, and an air heat exchanger are connected circularly, has an injection circuit, which is a bypass for a part of the refrigerant between the medium pressure receiver and the second pressure reduction unit, to inject the part of refrigerant into a compression chamber of the compressor, and has a third expansion valve and an internal heat exchanger for carrying out heat exchange between the refrigerant whose pressure is reduced by the third expansion valve and the refrigerant between the medium pressure receiver and the second expansion valve, a pressure detection sensor for detecting a condensing pressure, and a controller for starting an injection control by the third expansion valve at the time when the condensing pressure detected by the pressure sensor or the condensing temperature calculated from the condensing pressure becomes a first predetermined value or more and stopping the injection control at the time when the condensing pressure or the condensing temperature becomes a second predetermined value which is smaller than the first predetermined value, or less. With this arrangement, an appropriate injection control can be realized and a high hot water supply/heating capability operation can be carried out.
    • 在压缩机,水热交换器,第一膨胀阀,中压容器,第二膨胀阀和空气热交换器中的热泵式热水供给室外装置循环地连接,具有注入回路 用于中压受压器和第二减压单元之间的制冷剂的一部分的旁路,以将制冷剂的一部分注入到压缩机的压缩室中,并具有用于进行热交换的第三膨胀阀和内部热交换器 在通过第三膨胀阀减压的制冷剂与介质压力容器和第二膨胀阀之间的制冷剂之间,用于检测冷凝压力的压力检测传感器和用于通过第三膨胀阀开始喷射控制的控制器 由压力传感器检测到的冷凝压力或从冷凝预先计算的冷凝温度的时间 ssure成为第一预定值以上,并且在冷凝压力或冷凝温度成为小于第一规定值以下的第二规定值时停止喷射控制。 通过这种布置,可以实现适当的喷射控制,并且可以执行高热水供应/加热能力操作。
    • 6. 发明授权
    • Heat pump water heater outdoor unit and heat pump water heater
    • 热泵热水器室外机和热泵热水器
    • US08733118B2
    • 2014-05-27
    • US12360456
    • 2009-01-27
    • Takahiro UshijimaKazuki Okada
    • Takahiro UshijimaKazuki Okada
    • F25B27/00
    • F25B30/02F25B1/10F25B13/00F25B2339/047F25B2400/053F25B2400/13F25B2400/16
    • To provide a heat pump water heater outdoor unit and heat pump water heater capable of preventing reduction in heating/hot water supply ability even at a low ambient temperature. A heat pump water heater outdoor unit, in which a compressor, a water heat exchanger, a first expansion valve, and an air heat exchanger are connected with piping, includes a first internal heat exchanger provided between the water heat exchanger and the first expansion valve and used for heat exchange between a refrigerant flowing between the water heat exchanger and the first expansion valve and a refrigerant flowing between the air heat exchanger and the compressor, an injection circuit branching off at a point between the first internal heat exchanger and the first expansion valve and to inject the refrigerant into the compressor through a second expansion valve; and a second internal heat exchanger for heat exchange between the refrigerant flowing between the first internal heat exchanger and the first expansion valve and the refrigerant flowing between the second expansion valve and the compressor in the injection circuit.
    • 提供即使在低环境温度下也能够防止加热/热水供应能力降低的热泵热水器室外机和热泵热水器。 其中压缩机,水热交换器,第一膨胀阀和空气热交换器与管道连接的热泵热水器室外机包括设置在水热交换器和第一膨胀阀之间的第一内部热交换器 并且用于在水热交换器和第一膨胀阀之间流动的制冷剂与在空气热交换器和压缩机之间流动的制冷剂之间的热交换,在第一内部热交换器与第一膨胀之间的点分支的注入回路 并通过第二膨胀阀将制冷剂注入压缩机; 以及第二内部热交换器,用于在第一内部热交换器和第一膨胀阀之间流动的制冷剂与在注入回路中在第二膨胀阀和压缩机之间流动的制冷剂之间进行热交换。
    • 7. 发明申请
    • HEAT PUMP WATER HEATER OUTDOOR UNIT AND HEAT PUMP WATER HEATER
    • 热泵水加热器室外机和热泵水加热器
    • US20090199581A1
    • 2009-08-13
    • US12360456
    • 2009-01-27
    • Takahiro UshijimaKazuki Okada
    • Takahiro UshijimaKazuki Okada
    • F25B27/00F25B13/00
    • F25B30/02F25B1/10F25B13/00F25B2339/047F25B2400/053F25B2400/13F25B2400/16
    • To provide a heat pump water heater outdoor unit and heat pump water heater capable of preventing reduction in heating/hot water supply ability even at a low ambient temperature. A heat pump water heater outdoor unit, in which a compressor, a water heat exchanger, a first expansion valve, and an air heat exchanger are connected with piping, includes a first internal heat exchanger provided between the water heat exchanger and the first expansion valve and used for heat exchange between a refrigerant flowing between the water heat exchanger and the first expansion valve and a refrigerant flowing between the air heat exchanger and the compressor, an injection circuit branching off at a point between the first internal heat exchanger and the first expansion valve and to inject the refrigerant into the compressor through a second expansion valve; and a second internal heat exchanger for heat exchange between the refrigerant flowing between the first internal heat exchanger and the first expansion valve and the refrigerant flowing between the second expansion valve and the compressor in the injection circuit.
    • 提供即使在低环境温度下也能够防止加热/热水供应能力降低的热泵热水器室外机和热泵热水器。 其中压缩机,水热交换器,第一膨胀阀和空气热交换器与管道连接的热泵热水器室外机包括设置在水热交换器和第一膨胀阀之间的第一内部热交换器 并且用于在水热交换器和第一膨胀阀之间流动的制冷剂与在空气热交换器和压缩机之间流动的制冷剂之间的热交换,在第一内部热交换器与第一膨胀之间的点分支的注入回路 并通过第二膨胀阀将制冷剂注入压缩机; 以及第二内部热交换器,用于在第一内部热交换器和第一膨胀阀之间流动的制冷剂与在注入回路中在第二膨胀阀和压缩机之间流动的制冷剂之间进行热交换。
    • 9. 发明申请
    • HEAT PUMP TYPE HOT WATER SUPPLY OUTDOOR APPARATUS
    • 热泵型热水户外设备
    • US20090241569A1
    • 2009-10-01
    • US12360439
    • 2009-01-27
    • Kazuki OkadaTakahiro UshijimaKengo Takahashi
    • Kazuki OkadaTakahiro UshijimaKengo Takahashi
    • F25B41/00F25B1/00F28D15/00
    • F25B13/00F25B1/10F25B40/00F25B49/027F25B2341/0653F25B2341/066F25B2400/053F25B2400/054F25B2400/13F25B2400/16F25B2600/17F25B2600/21F25B2600/2509F25B2600/2513F25B2700/1931F25B2700/21174Y02B30/72
    • A heat pump type hot water supply outdoor apparatus, in a compressor, a water heat exchanger, a first expansion valve, a medium pressure receiver, a second expansion valve, and an air heat exchanger are connected circularly, has an injection circuit, which is a bypass for a part of the refrigerant between the medium pressure receiver and the second pressure reduction unit, to inject the part of refrigerant into a compression chamber of the compressor, and has a third expansion valve and an internal heat exchanger for carrying out heat exchange between the refrigerant whose pressure is reduced by the third expansion valve and the refrigerant between the medium pressure receiver and the second expansion valve, a pressure detection sensor for detecting a condensing pressure, and a controller for starting an injection control by the third expansion valve at the time when the condensing pressure detected by the pressure sensor or the condensing temperature calculated from the condensing pressure becomes a first predetermined value or more and stopping the injection control at the time when the condensing pressure or the condensing temperature becomes a second predetermined value which is smaller than the first predetermined value, or less. With this arrangement, an appropriate injection control can be realized and a high hot water supply/heating capability operation can be carried out.
    • 在压缩机,水热交换器,第一膨胀阀,中压容器,第二膨胀阀和空气热交换器中的热泵式热水供给室外装置循环地连接,具有注入回路 用于中压受压器和第二减压单元之间的制冷剂的一部分的旁路,以将制冷剂的一部分注入到压缩机的压缩室中,并具有用于进行热交换的第三膨胀阀和内部热交换器 在通过第三膨胀阀减压的制冷剂与介质压力容器和第二膨胀阀之间的制冷剂之间,用于检测冷凝压力的压力检测传感器和用于通过第三膨胀阀开始喷射控制的控制器 由压力传感器检测到的冷凝压力或从冷凝预先计算的冷凝温度的时间 ssure成为第一预定值以上,并且在冷凝压力或冷凝温度成为小于第一规定值以下的第二规定值时停止喷射控制。 通过这种布置,可以实现适当的喷射控制,并且可以执行高热水供应/加热能力操作。