发明名称 |
COMPENSATING PRESSURE CONTROLLER FOR FLUID DISPENSER AND METHOD |
摘要 |
A fluid dispensing system having a fluid dispenser supporting a barrel containing liquid to be dispensed. The barrel has a slidable piston therein with the liquid on a forward piston side and a chamber on a rear piston side. Positive and negative pressure fluid circuits have components operable to apply respective positive and negative fluid pressures to the rear side of the piston. A pressure transducer is operable to sense a fluid pressure in the chamber; and a dispenser control is operative to store a pressure-time relationship during an initial dispensing cycle and thereafter, operate a component in the positive pressure fluid circuit to maintain the pressure-time relationship during a subsequent dispensing cycle. |
申请公布号 |
US2012168457(A1) |
申请公布日期 |
2012.07.05 |
申请号 |
US201213418601 |
申请日期 |
2012.03.13 |
申请人 |
VIDAL MICHAEL A.;NORDSON CORPORATION |
发明人 |
VIDAL MICHAEL A. |
分类号 |
B67D7/08;G01F11/00;B67D1/00;G05D7/06;G05D16/20 |
主分类号 |
B67D7/08 |
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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