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    AIR CONDITIONING DEVICE
    2.
    发明公开
    AIR CONDITIONING DEVICE 审中-公开

    公开(公告)号：EP2960596A4

    公开(公告)日：2016-09-28

    申请号：EP14753483

    申请日：2014-02-18

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： YAMASHITA KOJI ,  ISHIMURA KATSUHIRO ,  HATOMURA TAKESHI ,  IKEDA SOSHI ,  WAKAMOTO SHINICHI ,  TAKENAKA NAOFUMI

    IPC分类号： F25B1/00 ,  F25B9/00 ,  F25B13/00 ,  F25B47/02 ,  F25B49/02

    CPC分类号： F24F5/001 ,  F25B9/006 ,  F25B13/00 ,  F25B47/022 ,  F25B49/022 ,  F25B2313/005 ,  F25B2313/006 ,  F25B2313/0233 ,  F25B2313/02741 ,  F25B2313/0314 ,  F25B2400/13 ,  F25B2600/0271 ,  F25B2600/2509

    摘要： Provided is an air-conditioning apparatus 100 including a refrigerant circuit formed by connecting, with pipes, a compressor 10 including a compression chamber and an injection port through which refrigerant is introduced into the compression chamber, the compressor 10 being configured to compress refrigerant and discharge the compressed refrigerant, a first heat exchanger 12 that exchanges heat with the refrigerant, a subcooling heat exchanger 13 that includes a first flow passage and a second flow passage and exchanges heat between a portion of the refrigerant flowing in the first flow passage and another portion of the refrigerant flowing in the second flow passage to subcool the portion of refrigerant flowing in the first flow passage, a first expansion device 16 to decompress the refrigerant, a second heat exchanger 17 that exchanges heat with the refrigerant, and an accumulator 15 connected to a suction side of the compressor 10 and configured to store excess refrigerant, so that the refrigerant is circulated through the refrigerant circuit, the air-conditioning apparatus 100 comprising: a first bypass pipe 4a that connects the second flow passage of the subcooling heat exchanger 13 with a segment of the pipes, the segment being positioned on a refrigerant inflow side of the accumulator 15; an expansion device 14a to adjust a flow rate of the refrigerant flowing in the first bypass pipe 4a; a second bypass pipe 4b that connects a segment of the pipes with the injection port, the segment being positioned between the first heat exchanger 12 and the second heat exchanger 17; and an expansion device 14b to adjust a flow rate of the refrigerant flowing in the second bypass pipe 4b.

    AIR-CONDITIONING DEVICE
    7.
    发明公开
    AIR-CONDITIONING DEVICE 审中-公开
    KLIMAANLAGE

    公开(公告)号：EP2672199A4

    公开(公告)日：2016-12-14

    申请号：EP11857510

    申请日：2011-01-31

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： YAMASHITA KOJI ,  MORIMOTO HIROYUKI ,  ISHIMURA KATSUHIRO ,  WAKAMOTO SHINICHI ,  TAKENAKA NAOFUMI

    IPC分类号： F25B1/00

    CPC分类号： F24F11/001 ,  F24F3/06 ,  F24F3/065 ,  F24F3/08 ,  F24F11/06 ,  F24F11/30 ,  F24F11/83 ,  F24F2110/00 ,  F25B1/10 ,  F25B13/00 ,  F25B25/005 ,  F25B41/00 ,  F25B49/02 ,  F25B2313/0231 ,  F25B2313/0272 ,  F25B2313/02732 ,  F25B2313/02741 ,  F25B2400/121 ,  F25B2500/08 ,  F25B2600/25 ,  F25B2700/21152

    摘要： An air-conditioning apparatus includes a refrigerant circuit including a low-pressure shell structure compressor into which a refrigerant flowing through an injection pipe flows, a first heat exchanger, a second heat exchanger, a first expansion device, a refrigerant flow switching device, and a second expansion device configured to allow the refrigerant which has passed through the first expansion device and flows from the second heat exchanger to the first heat exchanger to have an intermediate pressure, the compressor, the first heat exchanger, the second heat exchanger, the first expansion device, the refrigerant flow switching device, and the second expansion device being connected by pipes to constitute the refrigerant circuit, and further includes a controller that controls an amount of refrigerant flowing through the injection pipe into a compression chamber. While the first heat exchanger is allowed to function as a condenser, a part of a high-pressure refrigerant flowing from the first heat exchanger to the second heat exchanger is enabled to flow through the injection pipe, and while the first heat exchanger is allowed to function as an evaporator, a part of the refrigerant allowed to have the intermediate pressure by the second expansion device is enabled to flow through the injection pipe, such that a discharge temperature of the compressor is controlled so as not to become too high in any of cooling and heating operations.

    摘要翻译： 空调装置包括制冷剂回路，该制冷剂回路包括流经喷射管的制冷剂流过的低压壳结构压缩机，第一热交换器，第二热交换器，第一膨胀装置，制冷剂流量切换装置和 第二膨胀装置，其被配置为允许已经通过第一膨胀装置并从第二热交换器流向第一热交换器的制冷剂具有中间压力，压缩机，第一热交换器，第二热交换器，第一 膨胀装置，制冷剂流动切换装置和第二膨胀装置通过管连接以构成制冷剂回路，并且还包括控制器，其将流过注射管的制冷剂的量控制到压缩室中。 当第一热交换器被用作冷凝器时，从第一热交换器流向第二热交换器的高压制冷剂的一部分能够流过注入管，并且当第一热交换器被允许 作为蒸发器的功能，允许通过第二膨胀装置具有中间压力的制冷剂的一部分能够流过注射管，使得压缩机的排出温度被控制为不会变得过高 制冷和供暖操作。

    AIR CONDITIONER
    8.
    发明公开
    AIR CONDITIONER 审中-公开

    公开(公告)号：EP2878899A4

    公开(公告)日：2016-03-30

    申请号：EP12876165

    申请日：2012-05-11

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： ISHIMURA KATSUHIRO ,  YAMASHITA KOJI ,  MORIMOTO HIROYUKI

    IPC分类号： F25B1/00 ,  F25B9/00 ,  F25B13/00 ,  F25B45/00 ,  F25B49/00 ,  F25B49/02

    CPC分类号： F25B49/022 ,  F25B9/006 ,  F25B13/00 ,  F25B45/00 ,  F25B49/005 ,  F25B2313/02741 ,  F25B2500/19 ,  F25B2600/02 ,  F25B2600/11

    摘要： An air-conditioning apparatus is disclosed in which a refrigerant circuit is formed by connecting, by a refrigerant pipe, a compressor 10 that discharges a zeotropic refrigerant including a plurality of components with different boiling points, an outdoor-side heat exchanger 12 that exchanges heat between outside air and the refrigerant, a first expansion device 51 that regulates the pressure of the refrigerant, and a load-side heat exchanger 50 that exchanges heat between the air in an air-conditioning target space and the refrigerant. The air-conditioning apparatus includes a controller 40 that has a composition computing function unit 40A and a composition determining function unit 40B. The composition computing function unit 40A is configured to compute a circulating composition that represents the value of composition of each component in the refrigerant circulating through the refrigerant circuit. The composition determining function unit 40B is configured to determine whether or not the computation result of the composition computing function unit 40A is correct, adopt a predetermined value set in advance and related to composition as a circulating composition if the computation result is determined as incorrect, and adopt the computation result as the circulating composition if the computation result is determined as correct.

    AIR-CONDITIONING DEVICE
    10.
    发明公开
    AIR-CONDITIONING DEVICE 有权

    公开(公告)号：EP2672203A4

    公开(公告)日：2017-01-04

    申请号：EP11857819

    申请日：2011-01-31

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： TAKENAKA NAOFUMI ,  WAKAMOTO SHINICHI ,  YAMASHITA KOJI ,  MORIMOTO HIROYUKI ,  ISHIMURA KATSUHIRO

    IPC分类号： F25B1/00 ,  F25B29/00

    CPC分类号： F25B29/003 ,  F25B9/006 ,  F25B13/00 ,  F25B2313/0231 ,  F25B2313/0272 ,  F25B2313/02741 ,  F25B2400/12 ,  F25B2400/121 ,  F25B2400/13

    摘要： An air-conditioning apparatus (100, 200, 300) uses R32, a refrigerant mixture containing R32 and HFO1234yf and in which the R32 has a mass percentage of 40 % or higher, or a refrigerant mixture containing R32 and HFO1234ze and in which the R32 has a mass percentage of 15 % or higher as a heat-source refrigerant. The air-conditioning apparatus (100, 200, 300) has a low-pressure shell-structure compressor (1), a first flow switching valve (2), a heat-source-side heat exchanger (3), first flow control devices (9c to 9e), and a plurality of use-side heat exchangers (C to E) that are connected by refrigerant pipes so that a refrigeration cycle is formed. The compressor (1) has a compression chamber that is provided within a sealed container and that has an opening extending between inside and outside of the sealed container. The air-conditioning apparatus (100, 200, 300) is capable of performing a heating operation in which only heating is performed at the use-side heat exchangers (C to E), a cooling operation in which only cooling is performed at the use-side heat exchangers (C to E), and a cooling and heating mixed operation in which heating and cooling are performed in a mixed fashion at the use-side heat exchangers (C to E). The air-conditioning apparatus (100, 200, 300) includes an injection pipe (23) that connects a refrigerant circuit constituting the refrigeration cycle to the opening, and a second flow control device (24) that is provided in the injection pipe (23) and that controls an injection amount of refrigerant to be supplied to the compression chamber. The refrigerant circulating through the refrigeration cycle is injected into the compressor (1) by supplying the refrigerant into the compression chamber via the injection pipe (23) and the opening.