CN2224689Y - Energy-saving A.C arc welder - Google Patents

Abstract

The utility model relates to an energy-saving AC arc welder, belonging to the field of electric arc welding device technology. The utility model comprises a power circuit, an output circuit which is connected with the power circuit, a control circuit which is in magnetic connection with the output end of the output circuit and a switching circuit which is connected with the output end of the control circuit; the utility model is provided with one a transformer and an electronic control device, so the utility model is low in volume, light in weight and low in cost; the action of an inner electronic circuit makes the power factor of the utility model be close to one, therefore, the energy consumption is reduced, the energy dissipation is reduced, and the arc-generating performance of the utility model is good.

Description

Energy-Saving AC Arc Welding Machine

The utility model belongs to the technical field of arc-welding apparatus.

The ac arc wedling machine of our usefulness now, general is with directly output after the transformer step-down, or will exchange after rectification becomes direct current and export, but this arc-welding machine exchanges output or direct current output no matter be, all in the transformer magnetic loop, cause leakage field to cause the software feature of arc-welding machine, the operating current of the primary that this just makes makes power factor descend than big of the corresponding electric current of when welding actual power consumption more.And intermediate frequency or high-frequency inversion arc-welding machine, though the power factor height, its cost height, maintenance difficult.

The purpose of this utility model provides a kind of power factor height, and volume is little, the ac arc wedling machine that cost is low.

This Energy-Saving AC Arc Welding Machine comprises power circuit, is connected on the output circuit on the power circuit, and magnetic is connected the control circuit on the output circuit output, is connected on the on-off circuit of control circuit output; Output circuit comprises the transformer B with power circuit ₁The inductance L and the transformer B of series connection of elementary winding parallel connection ₂, one terminates at inductance L and transformer B ₂Parallel resistor R between the elementary winding ₁And capacitor C ₁, be connected on parallel resistor R ₁, capacitor C ₁The other end and transformer B ₂The normally opened contact J of the elementary winding other end _1-1Control circuit comprises the transformer B from output circuit ₂Secondary windings on take out the inductance HL of signal, be connected on the rectifier Z on the inductance HL ₂, be connected on the resistance R of power circuit output end ₉, resistance R ₁₀, colelctor electrode is connected on resistance R ₉On, base stage is connected on resistance R ₁₀With rectifier Z ₂The triode BG of negative output terminal ₅, just terminating at triode BG ₅Diode D on the colelctor electrode ₁, be connected on diode D ₁Capacitor C between negative terminal and ground ₄, series connection be connected on diode D ₁The resistance R of negative terminal ₁₁And resistance R ₁₂, just terminating at resistance R ₁₁And resistance R ₁₂Between diode D ₂, base stage is connected on diode D ₂The triode BG of negative terminal ₆, its trigger end passes through resistance R respectively ₅Be connected on triode BG ₅Colelctor electrode and pass through resistance R ₁₃Be connected on triode BG ₆Flip and flop generator on the colelctor electrode; On-off circuit comprises the relay J that is connected on power circuit output end ₁, base stage is connected on the triode BG of flip and flop generator ₃Emitter stage on, colelctor electrode is connected on relay J ₁On triode BG ₂

Since when welding, relay J ₁Work makes normally opened contact J _1-1Closure, thus make capacitor C ₁With transformer B ₂Elementary winding parallel connection, and inductance L and capacitor C in parallel ₁, transformer B ₁Elementary windings in series, thus make the power factor of arc-welding machine approach 1, making it energy-conservation, electronic circuit gets final product with general homemade element, and price is hanged down cost saving, and the volume of whole arc-welding machine is also very little, and is in light weight.

Accompanying drawing shows embodiment of the present utility model, wherein:

Figure 1 shows that the structured flowchart of Energy-Saving AC Arc Welding Machine;

Figure 2 shows that the circuit theory diagrams of Energy-Saving AC Arc Welding Machine.

Energy-Saving AC Arc Welding Machine as shown in the figure comprises power circuit (1), is connected on the output circuit (2) on the power circuit (1), and magnetic is connected the control circuit (3) on output circuit (2) output, is connected on the on-off circuit (4) of control circuit (3) output.Power circuit (1) comprises power transformer B ₁, be connected on transformer B ₁Bridge rectifier Z on the secondary windings ₁, just terminating at rectifier Z ₁The Zener diode D of negative output terminal ₄, be connected on rectifier Z ₁Positive output end and diode D ₄The resistance R of negative terminal ₂, base stage is connected on diode D ₄Negative terminal, colelctor electrode are connected on rectifier Z ₁The triode BG of positive output end ₁Output circuit (2) comprises inductance L, the transformer B that elementary winding is connected with inductance L ₂, on terminate at inductance L and transformer B ₂Parallel resistor R between elementary winding ₁And capacitor C ₁, upper end and parallel resistor R ₁, capacitor C ₁Lower end connection, lower end and transformer B ₂The normally opened contact J that elementary winding lower end connects _1-1, inductance L and transformer B ₂With power transformer B ₁Elementary winding parallel connection.Control circuit (3) comprises and transformer B ₂The inductance HL that secondary windings magnetic connects is connected on the bridge rectifier Z on the inductance HL ₂, be connected on rectifier Z ₂The diode connected in parallel D of output ₃, capacitor C ₅, be connected on triode BG ₁Resistance R on the emitter stage ₉, resistance R ₁₀, colelctor electrode is connected on resistance R ₉Upward, base stage is connected on resistance R ₁₀With rectifier Z ₂The triode BG of negative output terminal ₅, just terminating at triode BG ₅Diode D on the colelctor electrode ₁, be connected on diode D ₁Capacitor C between negative terminal and ground ₄, series connection is at diode D ₁The resistance R of negative terminal ₁₁, resistance R ₁₂, just terminating at resistance R ₁₁, resistance R ₁₂Between diode D ₂, base stage is connected on diode D ₂The triode BG of negative terminal ₆, be connected on triode BG ₆Resistance R on the colelctor electrode ₁₃, be connected on triode BG ₅Resistance R on the colelctor electrode ₅, trigger end is connected on resistance R respectively ₅And resistance R ₁₃On flip and flop generator.Flip and flop generator comprises triode BG ₃With triode BG ₄, triode BG ₃Colelctor electrode pass through resistance R ₃Be connected on triode BG ₁Emitter stage on, base stage is connected on resistance R ₅Go up and pass through resistance R ₆Be connected on triode BG ₄Colelctor electrode on, emitter stage is connected on triode BG ₂On the base stage, triode BG ₄Colelctor electrode pass through resistance R ₈Be connected on triode BG ₁Emitter stage on, base stage passes through resistance R ₄Be connected on triode BG ₃Colelctor electrode on, be connected on resistance R simultaneously ₁₃On.On-off circuit (4) comprises and is connected on triode BG ₁Relay J on the emitter stage ₁, colelctor electrode is connected on relay J ₁The triode BG that go up, base stage is connected on flip and flop generator ₃Emitter stage on triode BG ₃

In use, if transformer B ₂The output no-output, then inductance HL goes up non-inductive signal, then bridge rectifier Z ₂Not conducting, triode BG ₅Conducting is by two utmost point D ₁, diode D ₂Make BG ₆End, then triode BG ₄Conducting, triode BG ₃End utmost point pipe BG ₂End relay J ₁Do not work, as transformer B ₂Secondary when output is arranged, the duty of each device is opposite with the duty of above-mentioned each device, then relay J ₁Work, normally opened contact J _1-1Closure is with parallel resistor R ₁Capacitor C ₁With transformer B ₂Elementary winding parallel connection makes power factor approach 1.

Claims (3)

1, a kind of Energy-Saving AC Arc Welding Machine, comprise power circuit (1), it is characterized in that also comprising the output circuit (2) that is connected on the power circuit (1), magnetic is connected the control circuit (3) on output circuit (2) output, is connected on the on-off circuit (4) of control circuit (3) output; Output circuit (2) comprises the transformer B with power circuit (1) ₁The inductance L and the transformer B of series connection of elementary winding parallel connection ₂, one terminates at inductance L and transformer B ₂Parallel resistor R between the elementary winding ₁And capacitor C ₁, be connected on parallel resistor R ₁, capacitor C ₁The other end and transformer B ₂The normally opened contact J of the elementary winding other end _1-1Control circuit (3) comprises from the transformer B of output circuit (2) ₂Secondary windings on take out the inductance HL of signal, be connected on the rectifier Z on the inductance HL ₂, be connected on the resistance R of power circuit (1) output ₉, resistance R ₁₀, colelctor electrode is connected on resistance R ₉Last base stage is connected on resistance R ₁₀With rectifier Z ₂The triode BG of negative output terminal ₅, just terminating at triode BG ₅Diode D on the colelctor electrode ₁, be connected on diode D ₁Capacitor C between negative terminal and ground ₄, series connection be connected on diode D ₁The resistance R of negative terminal ₁₁And resistance R ₁₂, just terminating at resistance R ₁₁And resistance R ₁₂Between diode D ₂, base stage is connected on diode D ₂The triode BG of negative terminal ₆, its trigger end passes through resistance R respectively ₅Be connected on triode BG ₅Colelctor electrode and pass through resistance R ₁₃Be connected on triode BG ₆Flip and flop generator on the colelctor electrode; On-off circuit (4) comprises the relay J that is connected on power circuit (1) output ₁, base stage is connected on the triode BG of flip and flop generator ₃Emitter stage on, colelctor electrode is connected on relay J ₁On triode BG ₂

2, Energy-Saving AC Arc Welding Machine according to claim 1 is characterized in that power circuit (1) comprises power transformer B ₁, be connected on transformer B ₁Bridge rectifier Z on the secondary windings ₁, just terminating at rectifier Z ₁The Zener diode D of negative output terminal ₄, be connected on rectifier Z ₁Positive output end and diode D ₄The resistance R of negative terminal ₂, base stage is connected on diode D ₄Negative terminal, colelctor electrode are connected on rectifier Z ₁The triode BG of positive output end ₁

3, Energy-Saving AC Arc Welding Machine according to claim 1 is characterized in that rectifier Z ₂Be bridge rectifier.

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