CN201201105Y

CN201201105Y - Direct current welder using electromagentic furnace technology

Info

Publication number: CN201201105Y
Application number: CNU2008200474402U
Authority: CN
Inventors: 朱正昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-07
Filing date: 2008-05-07
Publication date: 2009-03-04
Anticipated expiration: 2018-05-07

Abstract

The utility model relates to a direct-current welder which applies the electromagnetic oven technology. The direct-current welder comprises a power input end, a transformer T1 and at least one welding output end which is connected with the transformer T1, wherein the power input end is connected with the transformer T1 through a bridge rectifier circuit; the T1 and a capacitor C1 form an LC oscillating circuit; a resistor R1, a resistor R2, a resistor R3 and a resistor R4 form a synchronous signal detection circuit; and the drive pulse of field effect tube Q2 of a drive circuit is guranteed to arrive when the voltage is the lowest, and the field effect tube Q2 is connected with an electromagnetic oven mainboard, a singlechip and a photoelectric coupler in turn. The direct-current welder transfers the prior mature electromagnetic oven technology to the welder, not only reduces the cost and the energy consumption of the welder but also improves the reliability of the welder, realizes automatic control by adoption of the singlechip, has low stand-by power, saves the electric energy, and improves the efficacy; and a single 25 AIGBT can output more than 2,000 watts of power, and two 40 AIGBTs can output more than 4,000 watts of power.

Description

A kind of DC welder of using electromagentic furnace technology

Technical field

The utility model relates to the DC welder of a kind of electric welding machine, particularly a kind of using electromagentic furnace technology.

Background technology

At present, existing common power frequency electric welding machine generally uses appendiron core transformer, and its weight is bigger, and price is higher; The circuit complexity of existing high-frequency welding machine, cost are big, fault rate is high, power consumption is also bigger.The electromagnetic oven of main flow in the market, normally alternating current is converted to direct current by bridge rectifier, pass through power inversion circuit again, produce high-frequency alternating magnetic field on solenoid, this high-frequency alternating magnetic field converts electric energy to heat energy by produce eddy current effect on cooker.

The utility model content

At the deficiency of above existing electric welding machine, the purpose of this utility model is that existing ripe electromagentic furnace technology is moved on the welding machine, and a kind of low cost, reliability height and the lower DC welder of energy consumption are provided.

The purpose of this utility model is achieved by the following technical solution:

A kind of DC welder of using electromagentic furnace technology, comprise power input, transformer T1 and at least one the welding output that is connected with transformer T1, be connected with rectification circuit, oscillating circuit, synchronization signal detection circuit, drive circuit, electromagnetic oven mainboard, single-chip microcomputer and photoelectrical coupler between described power input and the welding output.

As optimal technical scheme of the present utility model, described rectification circuit is a bridge rectifier, power input connects transformer T1 through bridge rectifier, transformer T1 and capacitor C 1 constitute the LC oscillation circuit, resistance R 1, R2, R3, R4 constitute synchronization signal detection circuit, the driving pulse that guarantees the IGBT Q2 of drive circuit arrives when its voltage minimum, and IGBT Q2 connects electromagnetic oven mainboard, single-chip microcomputer and photoelectrical coupler successively.

As optimal technical scheme of the present utility model, the output winding of described transformer T1 connects the welding output behind commutation diode D1, D2, and the welding output connects photoelectrical coupler and single-chip microcomputer successively.

As optimal technical scheme of the present utility model, be connected with transformer between described bridge rectifier and the transformer T1, transformer is connected with single-chip microcomputer.

The beneficial effects of the utility model are: will have ripe electromagentic furnace technology now and be moved on the welding machine, not only reduced welding machine cost, reduced energy consumption, and improved the reliability of welding machine, the utility model adopts single-chip microcomputer (MCU) can realize automatic control, make standby power extremely low, saved electric energy, improved effect, single 25AIGBT can export the above power of 2000W, and 2 40AIGBT can export the above power of 4000W.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is circuit theory diagrams of the present utility model.

The specific embodiment

As shown in Figure 1, a kind of DC welder of using electromagentic furnace technology, comprise power input, transformer T1 and at least one the welding output C that is connected with transformer T1, be connected with rectification circuit, oscillating circuit, synchronization signal detection circuit, drive circuit, electromagnetic oven mainboard D, single-chip microcomputer E and photoelectrical coupler F between described power input and the welding output C.Described rectification circuit is a bridge rectifier, power input connects transformer T1 through bridge rectifier, the input coil of transformer T1 and capacitor C 2 constitute the LC oscillation circuit, resistance R 1, R2, R3, R4 constitute synchronization signal detection circuit, guarantee that the driving pulse that drives IGBT Q2 arrives when its IGBT VCE voltage minimum, make the least in power-consuming of IGBT Q2, IGBT Q2 connects electromagnetic oven mainboard D, single-chip microcomputer E and photoelectrical coupler F successively.

In the present embodiment, the output winding of described transformer T1 connects welding output C behind commutation diode D1, D2, and welding output C connects photoelectrical coupler F and single-chip microcomputer E successively; Be connected with transformer T2 between bridge rectifier and the transformer T1, transformer is connected with single-chip microcomputer E.By single-chip microcomputer E (MCU) control, by single-chip microcomputer E control, all finished by single-chip microcomputer E by circuit control and protection through transformer T2 for input current behind photoelectrical coupler F for output winding output high voltage after rectification of transformer T1, output voltage.

Claims

1, a kind of DC welder of using electromagentic furnace technology, comprise power input, transformer T1 and at least one the welding output C that is connected with transformer T1, it is characterized in that: be connected with rectification circuit, oscillating circuit, synchronization signal detection circuit, drive circuit, electromagnetic oven mainboard D, single-chip microcomputer E and photoelectrical coupler F between described power input and the welding output C.

2, the DC welder of a kind of using electromagentic furnace technology according to claim 1, it is characterized in that: described rectification circuit is a bridge rectifier, power input connects transformer T1 through bridge rectifier, transformer T1 and capacitor C 1 constitute the LC oscillation circuit, resistance R 1, R2, R3, R4 constitute synchronization signal detection circuit, the driving pulse that guarantees the IGBT Q2 of drive circuit arrives when IGBT VCE voltage minimum, and IGBTQ2 connects electromagnetic oven mainboard D, single-chip microcomputer E and photoelectrical coupler F successively.

3, the DC welder of a kind of using electromagentic furnace technology according to claim 1 and 2, it is characterized in that: the output winding of described transformer T1 connects welding output C behind commutation diode D1, D2, and welding output C connects photoelectrical coupler F and single-chip microcomputer E successively.

4, the DC welder of a kind of using electromagentic furnace technology according to claim 3 is characterized in that: be connected with transformer T2 between described bridge rectifier and the transformer T1, transformer T2 is connected with single-chip microcomputer E.