Dispensing device and dispensing system

摘要

A dispensing device includes: a syringe including a nozzle; a first pump configured to generate a pressure to discharge a liquid in the syringe through the nozzle; and a control unit configured to, when discharging the liquid in the syringe, discharge a part of the liquid in the syringe with the pressure generated by the first pump and then cause the liquid in the syringe to run out under its own weight.

主权项

1. A dispensing device comprising:
a syringe including a nozzle; a first pump configured to generate a pressure to discharge a liquid in the syringe through the nozzle; a second pump configured to generate a pressure to draw a liquid into the syringe through the nozzle; a first valve configured to open and close a first flow path between the syringe and the first pump; a second valve configured to open and close a second flow path between the syringe and external air; a third valve configured to open and close a third flow path between the syringe and the second pump; and a controller configured to:
control the first pump, the first valve and the second valve to discharge the liquid in the syringe through the nozzle, and when discharging the liquid in the syringe, close the second valve, drive the first pump, and open the first valve to discharge a part of the liquid in the syringe with the pressure generated by the first pump from the nozzle, and thereafter stop the first pump, close the first valve, and open the second valve to allow the liquid in the syringe to flow out at its own weight from the nozzle, andwhen drawing the liquid into the syringe, drive the second pump and open the third valve to draw the liquid into the syringe with the pressure generated by the second pump.