DC solenoid valve with triode type high and low level conversion circuit

Abstract

A direct-current electromagnetic valve with a triode type high and low level conversion circuit comprises an electricity saving unit (100) and a traditional direct-current electromagnetic valve, and is characterized in that the electricity saving unit (100) is composed of a switching pulse generation circuit (101), the high and low level conversion circuit (102), a switching circuit (103), a false connection preventing diode (D1) and a fly-wheel diode (D5); the high and low level conversion circuit (102) is of a triode type circuit structure and is composed of a triode (T1), a fourth resistor (R4), a fifth resistor (R5), a sixth resistor (R6), a first capacitor (C1), a second diode (D2), a third diode (D3), an input end (14) and an output end (12).

Description

Technical field [0001] The invention relates to the field of direct current electrical appliances, in particular to a "direct current solenoid valve provided with a triode type high and low level conversion circuit" with a power saving function. Background technique [0002] Electromagnetic valve (Electromagnetic valve) is a fluid control device that relies on the electromagnetic force generated by the excitation coil to drive the valve to open and close. [0003] The DC solenoid valve is a type of solenoid valve, and it is a DC electrical appliance widely used in household appliances and industrial control equipment. Its characteristic is to insert a direct current voltage into the excitation coil, and use direct current to generate electromagnetic force to drive the valve to open and close. [0004] The DC solenoid valve is mainly composed of an excitation coil, a valve core and a return spring. Figure 1a , Figure 1b Schematic diagram of the direct current solenoid valve controll...

AI Technical Summary

Problems solved by technology

[0016] 1. Heating: The traditional DC solenoid valve has serious heating due to excessive power, and the phenomenon that the excitation coil is burned due to overheating also occurs frequently;

[0017] 2. Power consumption: Another shortcoming of the traditional DC solenoid valve is to maintain excessive power and useless power consumption. Reducing this power consumption can achieve the effect of "power saving";

[0018] 3. Out of control: After the excitation coil heats up, its impedance increases, the current becomes smaller, and the electromagnetic force also decreases. If the solenoid valve is started again at this time, the valve core will be difficult to reach the set position due to the small electromagnetic force. Or the industrial control equipment will lose control of the system

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