Portable central processing unit (CPU) controlled high-power electric welding machine

A portable, electric welding machine technology, applied in the direction of arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of heavy waste of raw materials, unstable output current, poor welding effect, etc., to maximize the heat dissipation effect and increase the air volume , The effect of reducing the radiator area

CN102218584AInactive Publication Date: 2011-10-19李峰华
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a portable central processing unit (CPU) controlled high-power electric welding machine. The electric welding machine comprises a CPU control circuit board, a radiator, an air fan and a shielding layer which are arranged in a shell; and a high-frequency resonant soft switch circuit which consists of four insulated gate bipolar transistor (IGBT) power transistors Q1, Q2, Q3 and Q4, two resonant inductors L1 and L2, a high-frequency transformer T1, two fast recovery diodes D1 and D2, an input filter capacitor C1, a resonant capacitor C2, an output filter capacitor C3 and a ferrite reactor L3 is also arranged in the shell. The CPU control circuit is adopted to realize digital button operation, a pulse width modulation (PWM) wave form is output by CPU given control current to control a driving transformer, the on / off of the IGBT power transistors is regulated to control the high-frequency transformer to do work, rectification is performed by the fast recovery diodes, the resonant inductors and the resonant capacitors play a role in realizing resonant frequency and feeding back energy, and the resonant frequency and the energy are finally output by the ferrite reactor. The CPU centralized control is realized; moreover, the high-power electric welding machine has low fault rate, high insulativity, a good dust blocking effect and long service life, is convenient to operate, saves energy, reduces consumption, prevents interference, and is low in production cost and use cost.
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Description

technical field

[0001] The invention relates to an electric welding machine, in particular to a high-power portable electric welding machine controlled by a CPU. Background technique

[0002] At present, the commonly used electric welding machine uses 50HZ low-frequency AC power supply. The disadvantages of this electric welding machine are large volume, heavy waste of raw materials, inconvenient use, inaccurate control, high power consumption, poor heat dissipation, low efficiency, small working cycle, and low electric power. Small, unstable output current, frequent arc breaks, high cost in use, and poor welding effect. Contents of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a small size, light weight, easy to carry, centralized CPU control, low failure rate, convenient operation, energy saving, anti-interference, strong insulation, good dust blocking effect, The CPU controls the high-power portable electric ...

Examples

Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] Figure 1-5As shown, a CPU-controlled high-power portable electric welding machine includes a casing 1, a handle 2, a CPU-controlled circuit board 3, a radiator 4, a shielding layer 5, a fan 6, a full-bridge high-frequency conversion circuit 7, an input module 8, and a control transformer 9. Two resonant inductors L1, L2, high frequency transformer T1, two fast recovery diodes D1, D2, input filter capacitor C1, resonant capacitor C2, output filter capacitor C3 and ferrite reactor L3. The upper part of the housing 1 is connected to the handle 2, the front panel of the housing 1 is provided with an air outlet 10, the rear panel of the housing 1 is provided with an air inlet 11, and a shielding layer 5 is arranged horizontally in the housing 1 to divide the inner cavity of the electric welding machine into upper and lower parts, and the CPU controls the circuit board 3 ...