Ejector cycle
    44.
    发明授权
    Ejector cycle 有权
    喷射器循环

    公开(公告)号:US07347062B2

    公开(公告)日:2008-03-25

    申请号:US10868619

    申请日:2004-06-15

    IPC分类号: F25B1/06

    摘要: An ejector cycle with an ejector includes a nozzle for decompressing refrigerant. A receiver for storing refrigerant is disposed at a refrigerant outlet side of a condenser. A bypass passage and a switching valve for opening and closing the bypass passage are provided so that high-temperature refrigerant discharged from a compressor is introduced into an evaporator while bypassing the condenser in a defrosting operation. When the defrosting operation is set, the switching valve is opened while a fan for blowing cool air to the condenser is operated. A part of refrigerant discharged from the compressor flows into the evaporator to remove frost on a surface of the evaporator.

    摘要翻译: 具有喷射器的喷射器循环包括用于减压制冷剂的喷嘴。 用于存储制冷剂的接收器设置在冷凝器的制冷剂出口侧。 设置有用于打开和关闭旁通通道的旁路通道和切换阀,以使从压缩机排出的高温制冷剂在除霜操作中绕过冷凝器而被引入蒸发器。 当除霜操作被设定时,切换阀打开,而用于向冷凝器吹入冷空气的风扇被操作。 从压缩机排出的制冷剂的一部分流入蒸发器以除去蒸发器表面上的霜。

    Vapor compression type refrigerating machine
    45.
    发明申请
    Vapor compression type refrigerating machine 审中-公开
    蒸气压缩式制冷机

    公开(公告)号:US20050028552A1

    公开(公告)日:2005-02-10

    申请号:US10909547

    申请日:2004-08-03

    摘要: A bypass valve 81 is opened until a predetermined period of time elapses after compressors 10a, 10b are stopped so as to equalize the pressure of a refrigerant circuit on a condenser 20 side with the pressure of a refrigerant circuit on an evaporator 30 side and, after the bypass valve 81 is closed, at least either of a refrigerant circuit 91 connecting to the compressor 10aand a refrigerant circuit 92 connecting to the compressor 10b is opened by opening a three-way valve 90 so that the refrigerant circuit on the condenser 20 side is made to communicate with the refrigerant circuit on the evaporator 30 side via the compressor 10 whereby, as the pressure equalized state can be maintained, it is possible to prevent the accumulation of a large amount of refrigerating machine oil on suction sides of the compressors 10 while the compressors 10 are stopped, thereby making it possible to prevent damage to the compressors 10 due to excessive compression when activated.

    摘要翻译: 在压缩机10a,10b停止之后,旁通阀81打开直到经过了预定时间,以使冷凝器20侧的制冷剂回路的压力与蒸发器30侧的制冷剂回路的压力相等,之后 旁通阀81关闭,通过打开三通阀90来打开与压缩机10a连接的制冷剂回路91和与压缩机10b连接的制冷剂回路92中的至少一个,使得冷凝器20侧的制冷剂回路为 经由压缩机10与蒸发器30侧的制冷剂回路连通,由此,能够保持压力均衡状态,能够防止大量的冷冻机油在压缩机10的吸入侧积聚,同时 压缩机10停止,从而可以防止当激活时由于过度压缩而对压缩机10造成的损坏。

    Ejector cycle
    46.
    发明授权
    Ejector cycle 有权
    喷射器循环

    公开(公告)号:US06925835B2

    公开(公告)日:2005-08-09

    申请号:US10869724

    申请日:2004-06-16

    摘要: In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a refrigerant outlet is provided in an evaporator at a position upper than a refrigerant inlet. Therefore, a circulation performance of refrigerant flowing in the evaporator can be improved. Accordingly, even when a pumping capacity generated in the ejector becomes smaller, a sufficient amount of refrigerant can be drawn into the ejector from the evaporator. Thus, a refrigerant amount supplied to the evaporator can be effectively increased. Further, a control unit controls an amount of cooling air supplied to a condenser based on the temperature of the cooling air, to control a refrigerant state to be introduced to the nozzle. In this case, a pressure increasing amount in the ejector can be effectively increased, and consumption power in the compressor can be effectively increased.

    摘要翻译: 在具有用于减压制冷剂的喷嘴的喷射器的喷射器循环中,在蒸发器中在制冷剂入口上方的位置设置制冷剂出口。 因此,可以提高在蒸发器中流动的制冷剂的循环性能。 因此,即使在喷射器中产生的泵送能力变小时,也能够从蒸发器将足够量的制冷剂吸入喷射器。 因此,能够有效地提高向蒸发器供给的制冷剂量。 此外,控制单元基于冷却空气的温度来控制供给到冷凝器的冷却空气的量,以控制向喷嘴引入的制冷剂状态。 在这种情况下,可以有效地提高喷射器中的增压量,并且能够有效地提高压缩机的消耗功率。

    Ejector cycle
    47.
    发明授权
    Ejector cycle 失效
    喷射器循环

    公开(公告)号:US06871506B2

    公开(公告)日:2005-03-29

    申请号:US10617207

    申请日:2003-07-10

    摘要: In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a variable throttle is disposed upstream from the nozzle of the ejector to decompress and expand high-pressure refrigerant flowing from a radiator. For example, the variable throttle decompresses and expands the high-pressure refrigerant in a gas-liquid two-phase state at an upstream position from the nozzle of the ejector. The variable throttle controls a throttle opening degree so that a refrigerant super-heating degree at a refrigerant outlet side of an evaporator or at a refrigerant suction side of a compressor becomes in a predetermined range. Accordingly, the ejector cycle has an improved nozzle efficiency and an improved ejector efficiency in a wide load variation range of the ejector cycle.

    摘要翻译: 在具有喷射器的喷射器循环中,喷射器包括用于减压制冷剂的喷嘴,可变节气门设置在喷射器的喷嘴的上游,用于对从散热器流动的高压制冷剂进行减压和膨胀。 例如,可变节流阀在喷射器的喷嘴的上游位置减压并膨胀处于气液两相状态的高压制冷剂。 可变节气门控制节气门开度,使得在蒸发器的制冷剂出口侧或压缩机的制冷剂吸入侧的制冷剂过热度变为预定范围。 因此,喷射器循环在喷射器循环的宽负载变化范围内具有改进的喷嘴效率和改进的喷射器效率。

    Ejector cycle
    48.
    发明授权
    Ejector cycle 有权
    喷射器循环

    公开(公告)号:US07870758B2

    公开(公告)日:2011-01-18

    申请号:US10880046

    申请日:2004-06-29

    IPC分类号: F25B1/06

    摘要: In an ejector cycle with an ejector including a nozzle for decompressing refrigerant, a control unit controls an air blowing amount of an evaporator fan so that a flow speed of refrigerant flowing in an evaporator becomes in a predetermined flow speed range. Therefore, it can prevent a large amount of lubrication oil from staying in the evaporator, and thereby the lubrication oil can sufficiently returns to a compressor. For example, the control unit includes a determining means for determining the predetermined flow speed range based on at least one of an atmosphere temperature of a condenser, a temperature of air supplied to the evaporator and a flow amount of refrigerant discharged from the compressor.

    摘要翻译: 在具有喷出器的喷射器的喷射器周期中,喷射器包括用于减压制冷剂的喷嘴,控制单元控制蒸发器风扇的空气吹送量,使得在蒸发器中流动的制冷剂的流速变得处于预定的流速范围。 因此,可以防止大量的润滑油停留在蒸发器中,从而润滑油能够充分地返回到压缩机。 例如,控制单元包括确定装置,用于基于冷凝器的气氛温度,供给到蒸发器的空气的温度和从压缩机排出的制冷剂的流量中的至少一个来确定预定流速范围。