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Novel variable frequency heating system

A heating system, a new type of technology, applied in the direction of induction heating, induction heating control, etc., can solve the problem of no improvement in frequency conversion technology

Inactive Publication Date: 2015-09-09
STATE GRID JIANGXI ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent application can greatly avoid heat loss and ensure the heating effect; but there is no improvement in frequency conversion technology

Method used

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Embodiment Construction

[0017] Such as figure 1 As shown, a novel variable frequency heating system of the present invention includes a heater 3 and a microprocessor 1, and also includes a rectification and filtering unit 4, and the input end of the rectification and filtering unit 4 is connected to an AC power supply, so that the rectification and filtering unit 4 will The heater 3 is heated after the AC power is rectified. The rectifying and filtering unit 4 forms a series loop with the heater 3 through the power switch tube 2, and a current sampling resistor R8 is arranged in the series loop, and the current sampling resistor R8 is connected to the microprocessor 1 through the current sampling unit 6, The microprocessor 1 is connected with the power switch tube 2 through a PWM control unit 8 . The present invention collects the current in the heating series loop through the current sampling unit, and then the microprocessor outputs PWM waves to the PWM control unit to adjust the PWM waveform outp...

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Abstract

The present invention relates to the technical field of heating systems and particular relates to a novel variable frequency heating system which comprises a heater and a microprocessor and further comprises a rectifying and filtering unit. The input end of the rectifying and filtering unit is connected to an AC power supply. A series connection loop is formed by the rectifying and filtering unit and the heater through a power switch tube. The series connection loop is internally provided with a current sampling resistor which is connected to the microprocessor through a current sampling unit. The microprocessor is connected to the power switch tube through a PWM control unit. By employing the above structure, the current in a heating series connection loop is collected through the current sampling unit, then the microprocessor outputs a PWM wave to the PWM control unit to adjust PWM waveform and output the PWM waveform to the power switch tube, and thus the variable frequency heating of the heating series connection loop is realized. The system has the advantages of the real-time control of variable frequency heating, energy saving, and good control effect.

Description

technical field [0001] The invention relates to the technical field of heating systems, in particular to a novel frequency conversion heating system. Background technique [0002] The progress of science and technology leads the society to be intelligent and energy-saving. Nowadays, more and more new technological innovation products have gradually changed our world and brought new changes to life and production. In modern industrial production, the consumption of electric energy is the largest consumption of all energy in production, so it is necessary to reduce the consumption of electric energy as much as possible, and let the limited electric energy create more value for us. [0003] Chinese utility model patent CN 203757830 U discloses a variable frequency electromagnetic heater, which includes a heating tank, an electrical control box and a frequency converter. The heating tank includes a steel pipe and elbows connected at both ends of the steel pipe. It is connected ...

Claims

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Application Information

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IPC IPC(8): H05B6/06
Inventor 刘金定
Owner STATE GRID JIANGXI ELECTRIC POWER CO