发明名称 |
CONTROLLER FOR A LIQUID SUPPLY PUMP |
摘要 |
<p>A controller (30) for operating a pump associated with a liquid supply system. The controller includes a pressure unit comprising a housing (34a, 34b, 34c) having a liquid inlet (98) and a liquid outlet (39, 130). A biased (42) diaphragm (40) within the housing acts against liquid pressure within the housing between the inlet and the outlet. A control circuit (50 ) which includes a Hall effect sensor is mounted on the housing and is responsive to movements of the diaphragm (40) via a magnet (80) associated with the diaphragm. Thus the Hall effect sensor generates signals related to pressures within the housing from which a rate of pressure change is determined. A threshold pressure value at which the control circuit (50) is operative to switch on the pump is varied in dependence upon the rate of pressure change.</p> |
申请公布号 |
WO2010091454(A1) |
申请公布日期 |
2010.08.19 |
申请号 |
WO2010AU00127 |
申请日期 |
2010.02.09 |
申请人 |
DAVEY WATER PRODUCTS PTY LTD;GRESHAM, JOEL, DYLAN |
发明人 |
GRESHAM, JOEL, DYLAN |
分类号 |
F04D15/02;F04B49/06;F04B49/08;F04C14/00;G01L13/00;G01L19/14 |
主分类号 |
F04D15/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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