LIQUID DISCHARGE APPARATUS

摘要

A high-pressure washing machine is provided, which can stop a brushless motor even if the function of a microcomputer declines. The high-pressure washing machine is provided as a high-pressure washing machine 10 having a pump 12 which sucks and discharges a washing solution and a brushless motor 14 supplied with current to drive the pump 12. The high-pressure washing machine 10 includes an inverter circuit 29 which when the pump 12 driven by power from the brushless motor 14 discharges the washing solution, controls the rotation speed of the brushless motor 14, a driver circuit 30, a microcomputer 31, and a motor operation stopping circuit 37 which detects the discharge pressure of the pump 12 and which based on the result of the detection, switches on and off an electric circuit E1, which supplies current to the brushless motor 14.

主权项

1. A liquid discharge apparatus comprising:
an electric motor which is rotated by supply of a current; a pump which is driven by a torque of the electric motor to suck and discharge liquid; a motor control unit which controls a rotation speed of the electric motor when the pump is driven by the torque of the electric motor; and a switch mechanism which detects a discharge pressure of the pump and which switches on or off a path of a current supplied to the electric motor based on a result of the detection.