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Solenoid-operated valve and solenoid-operated valve-driving circuit

A technology for driving circuits and operating valves, which is applied to valve details, valve devices, engine components, etc., and can solve the problems that the electromagnetically operated valve driving circuit 220 cannot be restarted and cannot be quickly switched.

Active Publication Date: 2009-08-26
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the solenoid-operated valve driving circuit 220 is stopped, the solenoid-operated valve driving circuit 220 cannot be restarted in a short time, and / or the solenoid-operated valve 206 cannot be quickly switched to the time zone during which the driven state is maintained.

Method used

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  • Solenoid-operated valve and solenoid-operated valve-driving circuit
  • Solenoid-operated valve and solenoid-operated valve-driving circuit
  • Solenoid-operated valve and solenoid-operated valve-driving circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 and 2 A circuit diagram of a solenoid-operated valve 12A having a solenoid-operated valve drive circuit 10 according to the first embodiment is shown. 3A to 3E show the supply voltage V associated with the solenoid coil 14 of the solenoid operated valve 12A. 0 , the first voltage V 1 (the first voltage), the second voltage V 2 (second voltage), control signal and current time diagram.

[0032] Such as figure 1 As shown, the electromagnetically operated valve 12A includes an electromagnetically operated valve drive circuit 10 including a switch control section 16 , a switch section 18 and a voltage generating section 20 . A DC power source 22 is electrically connected to an emitter terminal (first terminal) 20 a of a PNP type transistor 28 through a switch 24 , which constitutes the switch section 18 .

[0033] The electromagnetic pilot valve drive circuit 10 and the electromagnetic coil 14 are housed in the electromagnetic pilot valve 12A, or are provid...

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PUM

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Abstract

When the power supply voltage is applied to the switch control part (16), a control signal is supplied from the switch control part (16) to the transistor (28). The transistor (28) is set in an ON state during a time period corresponding to the pulse width of the control signal. The supply voltage is applied to the solenoid coil (14) as a first voltage. On the other hand, when the supply of the control signal to the transistor (28) is stopped, the transistor (28) is set in an OFF state. The voltage generation section (20) generates a DC voltage lower than the power supply voltage. The transistor (28) applies the generated DC voltage to the solenoid (14) as a second voltage.

Description

technical field [0001] The present invention relates to an electromagnetically operated valve which can be driven by applying a first voltage to an electromagnetic coil and kept in the driven state by applying a second voltage, and also relates to a method for applying the first voltage or the second voltage to the electromagnetic coil. Solenoid-operated valve drive circuit where voltage is applied to the solenoid coil. Background technique [0002] There is known a technical concept in which a solenoid pilot valve is arranged at an intermediate position of a flow passage, and wherein the solenoid pilot valve is energized to open when a voltage is applied from a solenoid pilot valve driving circuit to a solenoid coil of the solenoid pilot valve and close the flow channel (see Japanese Laid-Open Patent Documents Nos. 7-331718 and 2000-257744). [0003] Such as Figure 17 and 18 As shown, the applicant has confirmed the use of the solenoid pilot valve 206 based on the use of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03D5/10F16K31/06
Inventor 生出滋春
Owner SMC CORP