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    • 2. 发明公开
    • REFRIGERATION DEVICE
    • KÜHLVORRICHTUNG
    • EP2192361A4
    • 2017-03-29
    • EP08828804
    • 2008-08-28
    • DAIKIN IND LTD
    • TAKEGAMI MASAAKISAKAE SATORU
    • F25B1/00F25B13/00
    • F25B41/046F25B13/00F25B49/022F25B2313/02743F25B2313/02792F25B2313/0292F25B2400/075F25B2500/26F25B2600/021Y02B30/741
    • A refrigeration device (1) includes a switching valve control section (58) for outputting a switching signal for controlling a four-way switching valve (20) to a predetermined switching state when starting a compression mechanism (40); and a switching determination section (59) which, when starting only a first compressor (14a) as a start-up of the compression mechanism (40), outputs a low differential pressure signal if a differential pressure between a high-pressure port (P1) and a low-pressure port (P3) in the four-way switching valve (20) falls below a determination value in a determination operation after the switching signal being outputted by the switching valve control section (58). After the switching determination section (59) outputs the low differential pressure signal, a capacity control section (51) starts a second compressor (14b).
    • 本发明的制冷装置(1)具备:切换阀控制部(58),其在启动压缩机构(40)时将用于控制四通切换阀(20)的切换信号输出至规定的切换状态。 以及切换判定部(59),在仅使作为压缩机构(40)的启动的第一压缩机(14a)起动时,在高压端口(P1)与高压端口 )和四通切换阀(20)中的低压端口(P3)在由切换阀控制部(58)输出的切换信号之后的判定操作中低于判定值。 在切换判定部分(59)输出低压差信号之后,容量控制部分(51)启动第二压缩机(14b)。
    • 3. 发明公开
    • Air conditioner
    • EP2299207A3
    • 2014-08-06
    • EP10008844.2
    • 2010-08-25
    • Sanyo Electric Co., Ltd.
    • Sekine, Takashi
    • F25B13/00
    • F25B13/00F25B1/10F25B41/046F25B2313/007F25B2313/0231F25B2313/0233F25B2313/0253F25B2313/02742F25B2313/0292F25B2400/075
    • A triple-pipeline type first outdoor unit 2 provided with a first compressor 20 and a first outdoor heat exchanger 21 and connected to three inter-unit pipelines 5 made up of a high-pressure gas pipe 7, a low-pressure gas pipe 6, and a fluid pipe 8 and a plurality of indoor units 4A to 4D are provided, a second outdoor unit 3 provided with a second compressor 30, a second outdoor heat exchanger 32, and a second expansion valve 33 and connected by two pipelines of a gas pipe 35 and a fluid pipe 36 and a valve-element kit 50 having a third four-way valve 51 that connects the fluid pipe 36 of the second outdoor unit 3 to the fluid pipe 8 of the inter-unit pipeline 5 and selectively connects the gas pipe 35 of the second outdoor unit 3 to the high-pressure gas pipe 7 or the low-pressure gas pipe 6 of the inter-unit pipeline 5 are provided, and the first outdoor unit 2 is provided with a first four-way valve 60 that makes a refrigerant discharge pipe 25 of the first compressor 20 and the high-pressure gas pipe 7 capable of communicating with each other and if all the indoor units 4A to 4D perform a cooling operation at the same time, the first four-way valve 60 shuts off the communication between the refrigerant discharge pipe 25 and the high-pressure gas pipe 7, while a third four-way valve 51 is switched so as to connect the gas pipe 35d to the high-pressure gas pipe 7.