A Low Power Consumption Bistable Solenoid Valve

Abstract

The invention discloses a bistable solenoid valve with low power consumption, which comprises a valve body, an inlet joint at the inlet end of the valve body, and an electromagnet assembly at the outlet end of the valve body; The magnet is combined with an electromagnet assembly to form a bistable structure, the combination of the mechanical spring and the ejector rod is replaced by a magnetic spring, and the single-group coil configuration of the traditional solenoid valve is replaced by a double group (or multiple groups) of coils. The reliability of the valve reduces the energy consumption and size of the solenoid valve, and also effectively reduces the voltage required for the valve to operate. In tiny electronic systems, the present invention has great adaptability and application potential.

Description

technical field [0001] The invention belongs to the field of electromagnetic valve equipment, in particular to a bistable electromagnetic valve with low power consumption. Background technique [0002] Solenoid valves are widely used in various fluid control systems because of their simple structure and working principle. The structure of traditional solenoid valve such as figure 1 As shown, it mainly includes a valve body 61 , a return spring 62 , an electromagnetic coil 63 , a top rod 64 , a valve port 65 and an armature 66 . When not energized, the ejector rod of the solenoid valve pushes against the conical valve port under the action of the spring force, so that the valve port is closed. When energized, the magnetic force generated by the coil attracts the armature to move upward against the spring force, so that the valve port is opened. Continue to energize to keep the solenoid valve open until the electromagnetic suction disappears when the power is turned off, an...

AI Technical Summary

Problems solved by technology

However, mechanical springs present two major drawbacks

First, with the increase of the opening times of the solenoid valve, the mechanical spring will inevitably fail. The force is reduced, so that the valve port seal is not reliable

Second, the energy consumption is large

Continuous power on can keep the valve open. In many occasions, the valve is open for a long time, and the disadvantage of energy consumption is more obvious. Moreover, long time power on will cause serious copper loss and cause serious heat generation in the valve.

In addition, the coils of traditional solenoid valves usually use a single set of coils. If you want to increase the electromagnetic force, you can only use the method of increasing the energized voltage. In tiny electronic devices, the voltage is limited (<5V). Once the required voltage exceeds this limit, a booster circuit must be introduced, which will increase the size of the entire system, which is not conducive to the miniaturization of tiny electronic devices

Images