Refrigeration pull-down technique
    4.
    发明授权
    Refrigeration pull-down technique 失效
    制冷下拉技术

    公开(公告)号:US5295364A

    公开(公告)日:1994-03-22

    申请号:US91465

    申请日:1993-07-14

    IPC分类号: F25D29/00 G05D23/19 F25B1/00

    CPC分类号: F25D29/003 G05D23/1935

    摘要: Apparatus for and method of rapidly bringing a controlled space to a desired temperature. The technique is particularly applicable to the maintenance of controlled temperature spaces for the transportation of perishable cargo, such as in refrigeration trucks. Immediately following completion of the loading process, it is desirable to bring the internal temperature of the controlled space to the proper operating point as quickly as possible to retard spoilage. However, it is necessary to avoid unacceptable overshoot to prevent damage to the cargo by freezing. The disclosed system employs multiple sensors and a control algorithm to permit pull down to occur as rapidly as possible without unacceptable overshoot.

    摘要翻译: 用于将受控空间快速带到所需温度的装置和方法。 该技术特别适用于维护用于运输易腐货物(例如制冷卡车)的受控温度空间。 在完成加载过程之后,最好尽可能快地将受控空间的内部温度带到正确的工作点,以减少腐败。 但是,有必要避免不合格的过冲,以防止冻结造成的货物损坏。 所公开的系统采用多个传感器和控制算法以允许尽可能快地发生下拉而没有不可接受的过冲。

    Refrigeration temperature control system
    5.
    发明授权
    Refrigeration temperature control system 失效
    制冷温度控制系统

    公开(公告)号:US5209072A

    公开(公告)日:1993-05-11

    申请号:US853128

    申请日:1992-03-18

    IPC分类号: F25D29/00 G05D23/19

    CPC分类号: G05D23/1935 F25D29/003

    摘要: Apparatus for and method of long-term control of the temperature within a refrigerated space, such as the cargo compartment of a refrigeration truck. The technique employs sensors which monitor both discharge and return air. A control algorithm uses the multiple sensors to control modes of a refrigeration unit capable of supplying cooled or heated air. This causes the temperature within the refrigerated space to remain within a narrow range about a target temperature. The target is chosen to provide maximum safety for the cargo. If the target temperature is too high, the cargo is needlessly exposed to spoilage. If the target temperature is too low, the cargo is subject to the risk of damage from freezing.

    摘要翻译: 用于长期控制冷藏空间内诸如冷藏车厢的货舱内的温度的装置和方法。 该技术采用了监测排放和返回空气的传感器。 控制算法使用多个传感器来控制能够供应冷却或加热空气的制冷单元的模式。 这导致冷藏空间内的温度保持在关于目标温度的窄范围内。 选择目标是为货物提供最大的安全性。 如果目标温度过高,则货物不必要地暴露在腐败之中。 如果目标温度太低,则货物有冻结危险。