公开(公告)号：EP0383464B1

公开(公告)日：1994-05-11

申请号：EP90301150.0

申请日：1990-02-02

申请人： Hozelock Limited

发明人： Marston, Kevin Ian Michael ,  Watt, Peter Lawrence ,  Burrell, Philip Andrew Stephen

IPC分类号： F04D13/06

CPC分类号： H02K7/1185 ,  F04D13/06 ,  F04D15/0077

公开(公告)号：EP0383464A3

公开(公告)日：1991-01-02

申请号：EP90301150.0

申请日：1990-02-02

申请人： Hozelock Limited

发明人： Marston, Kevin Ian Michael ,  Watt, Peter Lawrence ,  Burrell, Philip Andrew Stephen

IPC分类号： F04D13/06

CPC分类号： H02K7/1185 ,  F04D13/06 ,  F04D15/0077

摘要： A pump for pumping a fluid, eg for pumping water for a garden fountain or waterfall, comprises an electric motor (12) driving an impeller (32) in a pump chamber. The motor is an A.C. synchronous motor and on start up may rotate in either direction of rotation, only one of which is the direction in which the impeller (32) is designed to rotate. A sprag (46) pivotally mounted in the pump chamber is urged to a projecting position (Figure 3) by fluid flow if the motor starts in the undesired direction (48), and the impeller blades engage the projecting sprag, causing the impeller to recoil and thence to rotate in the desired direction of rotation (40), in which fluid flow maintains the sprag (46) against the wall of the pump chamber.

公开(公告)号：EP1068888B1

公开(公告)日：2005-07-27

申请号：EP00304326.2

申请日：2000-05-23

申请人： Hozelock Limited

发明人： Marston, Kevin Ian Michael ,  Boddy, Andrew David

IPC分类号： B01D35/143 ,  B01D35/147 ,  C02F9/00 ,  C02F1/32

CPC分类号： C02F9/005 ,  A01K63/045 ,  B01D24/12 ,  B01D24/407 ,  B01D24/4884 ,  B01D35/143 ,  B01D35/147 ,  B01D35/30 ,  C02F1/325 ,  C02F3/00 ,  C02F2103/22 ,  C02F2209/445

摘要： A filter assembly for filtering pond or aquarium water comprises a container (1,2) with an inlet chamber (15) having an upstream region (36) and a downstream outlet (13) leading to an outlet chamber (22). A filter (16) is positioned in the inlet chamber (15) between the upstream region (36) and the outlet (13). In use, progressive clogging of the filter causes the water pressure in the upstream region (36) to rise until it reaches a predetermined threshold when a normally-closed relief valve (28, 29) opens to allow water to pass from the upstream region (36) to the outlet chamber (22) without passing through the filter (16). The valve has a coloured valve stem (28) providing a visual indication that the valve is open and that the filter is blocked and requires cleaning. In one embodiment, the outlet chamber (22) contains a source (19) of ultra-violet radiation to which the flow of water is exposed, regardless of whether the valve (28,29) is in the open or closed condition.

公开(公告)号：EP1068888A1

公开(公告)日：2001-01-17

申请号：EP00304326.2

申请日：2000-05-23

申请人： Hozelock Limited

发明人： Marston, Kevin Ian Michael ,  Boddy, Andrew David

IPC分类号： B01D35/143 ,  B01D35/147 ,  C02F9/00 ,  C02F1/32

CPC分类号： C02F9/005 ,  A01K63/045 ,  B01D24/12 ,  B01D24/407 ,  B01D24/4884 ,  B01D35/143 ,  B01D35/147 ,  B01D35/30 ,  C02F1/325 ,  C02F3/00 ,  C02F2103/22 ,  C02F2209/445

摘要： A filter assembly for filtering pond or aquarium water comprises a container (1,2) with an inlet chamber (15) having an upstream region (36) and a downstream outlet (13) leading to an outlet chamber (22). A filter (16) is positioned in the inlet chamber (15) between the upstream region (36) and the outlet (13). In use, progressive clogging of the filter causes the water pressure in the upstream region (36) to rise until it reaches a predetermined threshold when a normally-closed relief valve (28, 29) opens to allow water to pass from the upstream region (36) to the outlet chamber (22) without passing through the filter (16). The valve has a coloured valve stem (28) providing a visual indication that the valve is open and that the filter is blocked and requires cleaning. In one embodiment, the outlet chamber (22) contains a source (19) of ultra-violet radiation to which the flow of water is exposed, regardless of whether the valve (28,29) is in the open or closed condition.

摘要翻译： 用于过滤池塘或水族箱水的过滤器组件包括具有入口室（15）的容器（1,2），所述入口室具有上游区域（36）和通向出口室（22）的下游出口（13）。 过滤器（16）位于上游区域（36）和出口（13）之间的入口室（15）中。 在使用中，当常闭安全阀（28,29）打开以允许水从上游区域通过时，过滤器的逐渐堵塞使得上游区域（36）中的水压上升直到达到预定阈值 36）到出口室（22），而不通过过滤器（16）。 阀具有着色阀杆（28），其提供阀门打开的视觉指示，并且过滤器被阻塞并且需要清洁。 在一个实施例中，出口室（22）包含紫外线辐射源（19），无论阀门（28,29）是处于打开状态还是闭合状态，水流都暴露于该源。

公开(公告)号：EP0383464A2

公开(公告)日：1990-08-22

申请号：EP90301150.0

申请日：1990-02-02

申请人： Hozelock Limited

发明人： Marston, Kevin Ian Michael ,  Watt, Peter Lawrence ,  Burrell, Philip Andrew Stephen

IPC分类号： F04D13/06

CPC分类号： H02K7/1185 ,  F04D13/06 ,  F04D15/0077

摘要： A pump for pumping a fluid, eg for pumping water for a garden fountain or waterfall, comprises an electric motor (12) driving an impeller (32) in a pump chamber. The motor is an A.C. synchronous motor and on start up may rotate in either direction of rotation, only one of which is the direction in which the impeller (32) is designed to rotate. A sprag (46) pivotally mounted in the pump chamber is urged to a projecting position (Figure 3) by fluid flow if the motor starts in the undesired direction (48), and the impeller blades engage the projecting sprag, causing the impeller to recoil and thence to rotate in the desired direction of rotation (40), in which fluid flow maintains the sprag (46) against the wall of the pump chamber.

摘要翻译： 用于泵送流体的泵，例如用于泵送花园喷泉或瀑布的水，包括驱动泵室中的叶轮（32）的电动马达（12）。 电动机是交流同步电动机，并且启动时可以沿任何旋转方向旋转，其中仅一个是叶轮（32）被设计成旋转的方向。 如果电机以不期望的方向（48）启动，则枢转地安装在泵室中的楔形件（46）通过流体流动被推动到突出位置（图3），并且叶轮叶片接合突出的楔形件，导致叶轮反冲 并且然后沿着所需的旋转方向（40）旋转，其中流体流动将楔形物（46）保持抵靠泵室的壁。