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    • 4. 发明申请
    • PERISTALTIC PUMP FOR PUMPING A LIQUID AND METHOD FOR OPERATING A PERISTALTIC PUMP
    • 用于泵送液体的过滤泵和用于操作超声波泵的方法
    • WO2013057109A1
    • 2013-04-25
    • PCT/EP2012/070500
    • 2012-10-16
    • FRESENIUS VIAL SASLABARTHE, SébastienBERTHIER, Jean-Baptiste
    • LABARTHE, SébastienBERTHIER, Jean-Baptiste
    • F04B43/08F04B49/08F04B49/10A61M5/142A61M5/168A61M5/36F04B43/10
    • F04B43/12A61M5/14228A61M5/16854A61M5/16859A61M5/365F04B43/082F04B49/00F04B49/08F04B49/10F04B2205/03
    • A peristaltic pump (1) for pumping a liquid comprises a flexible tube (2) for guiding the liquid to be pumped, a compression means (5) being actuatable for compressing the flexible tube (2), an upstream valve means (3) arranged in an upstream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) upstream of the compression means (5), and a downstream valve means (4) arranged in a downstream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) downstream of the compression means (5). A drive shaft (6) is provided which is rotatable for periodically actuating the compression means (5), the upstream valve means (3) and the downstream valve means (4). In addition, the peristaltic pump comprises a position detection means (8) for detecting the rotational position of the drive shaft (6) during actuation of the compression means (5), the upstream valve means (3) and the downstream valve means (4), a pressure sensor (7) being arranged between the upstream valve means (3) and the downstream valve means (4) for measuring a pressure signal (P) in the flexible tube (2) at a location between the upstream valve means (3) and the downstream valve means (4), and a control means (9) to control the operation of the peristaltic pump ( 1), the control means (9) being operative to detect a fault condition during the operation of the peristaltic pump (1) from a measured pressure signal (P). In a peristaltic pump ( 1) of this kind the control means (9), for detecting the fault condition, is operative to detect a peak (P1, P1') of the pressure signal (P) in a predefined interval (II) during rotation of the drive shaft (6) and to determine whether the fault condition is present or not by taking the signal value at the peak (P1, P1') and the location (T1, T1') of the peak (P1, P1') in the predefined interval (II) into account. In this way a peristaltic pump is provided allowing for an easy and reliable detection of a fault condition, in particular for detecting an empty-bag condition indicating that a bag supplying liquid to the flexible tube of the peristaltic pump is empty.
    • 用于泵送液体的蠕动泵(1)包括用于引导要泵送的液体的柔性管(2),可致动以压缩柔性管(2)的压缩装置(5),布置成 在相对于压缩装置(5)的上游方向上并且可致动以在压缩装置(5)的上游选择性地打开或关闭柔性管(2);以及下游阀装置(4) 相对于压缩装置(5)并且可致动以选择性地打开或关闭在压缩装置(5)下游的柔性管(2)。 设置有可旋转的驱动轴(6),用于周期性地致动压缩装置(5),上游阀装置(3)和下游阀装置(4)。 此外,蠕动泵包括位置检测装置(8),用于在压缩装置(5),上游阀装置(3)和下游阀装置(4)的致动期间检测驱动轴(6)的旋转位置 ),压力传感器(7)设置在所述上​​游阀装置(3)和所述下游阀装置(4)之间,用于在所述上游阀装置(2)之间的位置处测量所述柔性管(2)中的压力信号(P) 3)和下游阀装置(4),以及用于控制蠕动泵(1)的操作的控制装置(9),所述控制装置(9)可操作以在蠕动泵的操作期间检测故障状况 (1)从测量的压力信号(P)。 在这种蠕动泵(1)中,用于检测故障状况的控制装置(9)可操作以在预定义的间隔(II)期间检测压力信号(P)的峰值(P1,P1') 驱动轴(6)的旋转并通过将峰值(P1,P1')和峰值(P1,P1')的位置(T1,T1')处的信号值取出来确定是否存在故障条件, )在预定义的间隔(II)中考虑。 以这种方式,提供了蠕动泵,允许容易且可靠地检测故障状况,特别是用于检测指示向蠕动泵的柔性管供应液体的袋是空的空袋状况。