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Circuit of self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve and gas stove using same

A technology of constant current control and self-excited oscillation, applied in the field of solenoid valves, can solve the problems of declining brand quality, high hardware cost, waste of peripheral component resources, etc., to reduce hardware costs, reduce peripheral components, and improve product reliability. Effect

Pending Publication Date: 2021-01-08
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the disadvantages of the existing solenoid valve drive circuit include high hardware cost, the need for a dedicated chip, and the waste of more peripheral component resources, etc.
In the past, many R&D personnel or enterprises ignored the innovation and improvement of this part of the application due to sticking to the rules and the limitations of technological improvement, which directly led to objective phenomena such as low product reliability, high development process costs, and brand quality decline.

Method used

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  • Circuit of self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve and gas stove using same
  • Circuit of self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve and gas stove using same

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiments of the present invention provide a self-oscillating voltage doubling and constant current control solenoid valve circuit, such as figure 1 As shown, it includes a self-excited oscillation module 1, a full-wave rectification module 2 and a negative feedback amplification module 3, the self-excited oscillation module 1 is electrically connected to the full-wave rectification module 2, and the full-wave rectification module 2 is electrically connected to the negative feedback amplification module 3. The self-excited oscillation module 1 is used to generate a PWM signal, the full-wave rectification module 2 is used to output a voltage doubler drive voltage according to the PWM signal generated by the self-excited oscillation module 1, and the negative feedback amplification module 3 is used to output The voltage doubler driving voltage of the full-wave rectification module 2 is negatively fed back and constant current output controls the solenoid valve.

[0025]...

Embodiment 2

[0047] Embodiment 2 of the present invention provides a gas cooker, which includes the self-oscillating circuit for voltage doubling and constant current control of the solenoid valve.

[0048] In the gas cooker of the present invention, the PWM signal is first generated by the self-excited oscillation module, then the voltage doubling driving voltage is output by the full-wave rectification module according to the PWM signal of the self-excited oscillation module, and finally the voltage doubled by the full-wave rectification module is output by the negative feedback amplification module. The driving voltage negative feedback constant current output controls the solenoid valve, so as to realize the stable output of the solenoid valve by means of self-excited oscillation voltage doubler + constant current control, abandon the control of switching power supply chip, reduce the peripheral components, reduce the hardware cost in the design process, and realize Steady injection of ...

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PUM

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Abstract

The invention discloses a circuit of a self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve and a gas stove using the same. The circuit of the self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve comprises a self-excited oscillation module for generating a PWM signal, a full-wave rectification module for outputting a voltage-multiplying driving voltage according to the PWM signal, and a negative feedback amplification module for outputting a negative feedback constant current according to the voltage-multiplying driving voltage to control the electromagnetic valve. According to the circuit of the self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve, the self-excited oscillation module generates a PWM signal, and then the full-wave rectification module outputs a voltage-multiplying driving voltage according to the PWM signal of the self-excited oscillation module, and finally, the electromagnetic valve is controlled by the negative feedback amplification module according to the voltage-multiplying driving voltage negative feedback constant-current output of the full-wave rectification module, so that the stable output of the electromagnetic valve is realized by adopting a self-excited oscillation voltage-multiplying and constant-current control mode, the control of a switching power supply chip is abandoned, peripheral components are reduced, the hardware cost in the design process is reduced, and therefore, stable gas injection of the gas stove isrealized.

Description

technical field [0001] The invention belongs to the technical field of solenoid valves, and in particular relates to a circuit for self-excited oscillation voltage doubling and constant current control solenoid valves and a gas stove using the same. Background technique [0002] The solenoid valve driving circuit on the market generally adopts the "Boost" in the switching power supply + the switching power supply chip TDA4863 as the boost circuit. [0003] However, the disadvantages of the existing solenoid valve drive circuit include high hardware cost, the need for a dedicated chip, and waste of more peripheral component resources. In the past, many R&D personnel or enterprises ignored the innovation and improvement of this part of the application due to sticking to the rules and limitations of technological improvement, which directly led to objective phenomena such as low product reliability, high development process costs, and brand quality decline. Contents of the in...

Claims

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Application Information

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IPC IPC(8): G05F1/56F16K31/06
CPCG05F1/561F16K31/0675
Inventor 李耀聪潘叶江
Owner VATTI CORP LTD
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