公开(公告)号：EP0928846B1

公开(公告)日：2003-05-21

申请号：EP99300137.9

申请日：1999-01-08

申请人： Tennant Company

发明人： Erko, Robert ,  Mundt, Daniel L. ,  Schwartz, Terry B. ,  Henderson, Paul D.

IPC分类号： E01H1/05 ,  A47L11/282 ,  A47L11/14

CPC分类号： A47L11/4011 ,  A47L11/4058 ,  E01H1/05

公开(公告)号：EP0928846A3

公开(公告)日：2000-06-07

申请号：EP99300137.9

申请日：1999-01-08

申请人： Tennant Company

发明人： Erko, Robert ,  Mundt, Daniel L. ,  Schwartz, Terry B. ,  Henderson, Paul D.

IPC分类号： E01H1/05 ,  A47L11/282 ,  A47L11/14

CPC分类号： A47L11/4011 ,  A47L11/4058 ,  E01H1/05

摘要： A floor cleaning machine (10) of the type having a fluid driven scrub brush (24) utilizes fluid pressure for applying down force on the scrub brush (24) to a floor surface being cleaned. The fluid pressure applied is controlled by a fluid pressure regulator which has a movable valve element (34) and an electrical coil (58) for controlling the position of the movable valve element (34). There is a feedback circuit for controlling current through the coil (58) which includes a source of power (60,62) and a pulse width modulation switching device (66). The switching device (66) in turn is controlled by a comparison between the current sensed in the coil circuit and an operator set value for the desired current to provide a desired down force on the cleaning brush (24).

公开(公告)号：EP0928846A2

公开(公告)日：1999-07-14

申请号：EP99300137.9

申请日：1999-01-08

申请人： Tennant Company

发明人： Erko, Robert ,  Mundt, Daniel L. ,  Schwartz, Terry B. ,  Henderson, Paul D.

IPC分类号： E01H1/05 ,  A47L11/282 ,  A47L11/14

CPC分类号： A47L11/4011 ,  A47L11/4058 ,  E01H1/05

摘要： A floor cleaning machine (10) of the type having a fluid driven scrub brush (24) utilizes fluid pressure for applying down force on the scrub brush (24) to a floor surface being cleaned. The fluid pressure applied is controlled by a fluid pressure regulator which has a movable valve element (34) and an electrical coil (58) for controlling the position of the movable valve element (34). There is a feedback circuit for controlling current through the coil (58) which includes a source of power (60,62) and a pulse width modulation switching device (66). The switching device (66) in turn is controlled by a comparison between the current sensed in the coil circuit and an operator set value for the desired current to provide a desired down force on the cleaning brush (24).

摘要翻译： 具有流体驱动的洗刷刷（24）的类型的地板清洁机（10）利用流体压力来将擦洗刷（24）上的下压施加到待清洁的地板表面上。 施加的流体压力由具有用于控制可动阀元件（34）的位置的可动阀元件（34）和电线圈（58））的流体压力调节器控制。 存在用于控制通过包括功率源（60,62）和脉宽调制开关装置（66）的线圈（58）的电流的反馈电路。 开关装置66又通过在线圈电路中感测的电流与期望电流的操作者设定值之间的比较来控制，以在清洁刷（24）上提供期望的向下的力。