High pressure solenoid pump

摘要

A solenoid pump, including: an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports; a plunger disposed within the first through-bore and including a second through-bore; a spring arranged to urge the plunger toward the outlet port; a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to coil power applied to the solenoid coil; and a control unit for: accepting an input voltage; generating the coil power during an interval equal to a first time period; supplying the coil power to the solenoid coil; and selecting a duration of the first time period such that the duration of the first time period varies according to the input voltage.

主权项

1. A solenoid pump, comprising:
an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports; a plunger disposed within the first through-bore and including a second through-bore; a spring arranged to urge the plunger toward the outlet port; a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to direct current coil power applied to the solenoid coil; and, a control unit including:
an input for accepting a direct current input voltage; and,a power circuit for:
receiving the direct current input voltage;generating the direct current coil power during an interval equal to a first time period;supplying the direct current coil power to the solenoid coil; and,selecting a duration of the first time period such that the duration of the first time period varies according to the direct current input voltage, wherein the control unit is for: comparing the direct current input voltage to a pre-determined value; and, selecting the duration of the first time period according to a difference between the direct current input voltage and the pre-determined value.