发明名称 |
Dispensing unit for a fluid dispensing machine, comprising a variable-volume pumping chamber, and machine comprising said dispensing unit |
摘要 |
A dispensing unit for a fluid dispensing machine comprises at least an inlet duct and an outlet duct for fluid products, connected to a variable-volume pumping chamber comprising at least one flexible wall. Two non return valves mounted in counter-phase are located in the inlet and outlet ducts, respectively. The pumping chamber is coupled to actuator means comprising a stepper motor, a screw-nut screw unit and a carriage. The carriage moves the pumping chamber from a zero position in which the chamber has a maximum volume to an upper limit in which the chamber has a minimum volume. An optic sensor defines the zero point of the pumping chamber so as to guarantee precision and repeatability of the dispensing operations.
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申请公布号 |
US6457607(B1) |
申请公布日期 |
2002.10.01 |
申请号 |
US20000529465 |
申请日期 |
2000.06.19 |
申请人 |
COROB INTERNATIONAL AG |
发明人 |
ANDREA PARRINO;GIORGIO MANFREDINI;LEOPOLDO MAZZALVERI |
分类号 |
B01F13/10;B67D99/00;F04B13/02;F04B43/08;F04B43/09;(IPC1-7):B67D5/08 |
主分类号 |
B01F13/10 |
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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