CN2780396Y - Phase shift resonance contravariant welding machine for aluminium alloy full sealed external shell - Google Patents
Phase shift resonance contravariant welding machine for aluminium alloy full sealed external shell Download PDFInfo
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- CN2780396Y CN2780396Y CN 200520069611 CN200520069611U CN2780396Y CN 2780396 Y CN2780396 Y CN 2780396Y CN 200520069611 CN200520069611 CN 200520069611 CN 200520069611 U CN200520069611 U CN 200520069611U CN 2780396 Y CN2780396 Y CN 2780396Y
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Abstract
The utility model discloses a phase shifting resonance inversion welding machine with a full closed outer shell made of aluminum alloy, which relates to a welding device which can convert power frequency alternating current into a direct current power supply required by the welding machine. The utility model is suitable for various electric welding of metal material. The structure of the utility model comprises the full closed outer shell made of aluminum alloy, a cooling fan, a cover, a control circuit board, and a high power conversion part, wherein the full closed outer shell made of aluminum alloy is composed of an upper shell body made of the aluminum alloy and a lower shell body made of the aluminum alloy; the high power conversion part is installed inside the upper shell body made of the aluminum alloy; the control circuit board is installed inside the lower shell body made of the aluminum alloy; the high power conversion part is composed of a rectification and filter circuit, an inversion circuit, and an output high frequency rectification circuit; the control circuit board comprises a switching power supply, a power drive circuit, a phase shifting PWM circuit and a peak current control circuit.
Description
Technical field
The utility model aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder relates to is a kind ofly to change industrial-frequency alternating current into welding machine required dc source welder, is applicable to various metal material electric weldings.
Background technology
At present, the inversion welding machine shell is with iron-clad or mould shell, in order to dispel the heat, must open air vent or vent window, its capability of electromagnetic shielding is poor, externally disturb, inner components and parts communicate with outside air, the inner laying dust of welding machine, the moisture absorption, galvanic corrosion after long-term the use, thus influence its reliability, on the other hand, the element of the power conversion fraction of inverter type welder also must use the aluminium radiator heat radiation.
The inversion welding machine operating frequency adopts below the 30KHz mostly, adopts the hard switching technology, and switching loss is big, and volume, weight are relatively also big and heavy, are not easy to carry.
Summary of the invention
The purpose of this utility model is to provide a kind of aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder at above-mentioned weak point, has the aluminium alloy totally enclosed frame, adopt peak point current control to combine with soft switch technique (phase-shifting resonance technology), perfect heat-dissipating, simple in structure, in light weight, loss is little, response is fast, the starting the arc is easy, splash less, cost is low.
Aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder takes following scheme to realize: aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder structure comprises the aluminium alloy totally enclosed frame, the cooling fan cover, control circuit board, high-power conversion fraction, the aluminium alloy totally enclosed frame is by the aluminium alloy upper shell, the aluminium alloy lower house constitutes, on the aluminium alloy, lower house is provided with radiated rib, device has high-power conversion fraction in the aluminium alloy upper shell, device has control circuit board in the aluminium alloy lower house, aluminium alloy upper shell upper unit has the cooling fan cover, device has cooling fan in the cooling fan cover, be used for the air cooling Al-alloy casing, aluminium alloy upper shell one end is provided with the electric power incoming line mouth, and the other end just is provided with, the negative pole accessory power outlet.
High-power conversion fraction is made up of current rectifying and wave filtering circuit, inverter circuit, output high-frequency rectification circuit.Rectification, filter circuit are made of rectifier bridge, filter capacitor C1; Inverter circuit is made up of high-power inverter tube BG1～BG4, high frequency transformer T1, inductance L 1, current transformer LM1, LM2.
The output high-frequency rectification circuit is made up of arc ignition circuit, power output circuit, high-frequency filter circuit.Arc ignition circuit is made up of commutation diode D3, D4, resistance R 1; Power output circuit is made up of heavy-duty diode D1, D2, capacitor C 2, C3, resistance R 2, R3; High-frequency filter circuit is made up of reactor LO, resistance R 4, capacitor C O.
In high-power conversion fraction circuit, high-power inverter tube BG1～BG4 and high frequency transformer T1 connect to form H type full-bridge phase-shifting resonance inverter circuit, connect by current transformer LM1, LM2 between the two halves brachium pontis, constitute distinguished current sampling circuit.One group of output of high frequency transformer T1 winding links to each other with heavy-duty diode D1, D2 negative terminal by commutation diode D3, D4, current-limiting resistance R1, another group output winding of high frequency transformer T1 links to each other with heavy-duty diode D1, D2 negative terminal, heavy-duty diode D1, D2 negative pole link to each other with filter capacitor CO, resistance R 4 by reactor LO, constitute power supply output cathode end, the common port of high frequency transformer T1 links to each other with filter capacitor CO, resistance R 4, constitutes power supply output negative pole end.
Control circuit board comprises Switching Power Supply, power driving circuit, phase-shift PWM circuit, peak point current control circuit.It is that the center constitutes that Switching Power Supply adopts the UC3844 power supply chip.Power driving circuit is made of driving amplifying circuit, high-frequency drive transformer, waveform finishing circuit.Drive amplifying circuit and adopt MIC4420 or 4421 etc. to amplify chip, the waveform finishing circuit adopts formations such as FET IRFD9120.The phase-shift PWM circuit adopts UC3877 or UC3879 integrated chip.The peak point current control circuit can adopt 74HC05 digital circuit integrated chip, voltage comparator integrated chip LM339.
The main components and parts device of high-power conversion fraction is in the aluminium alloy upper casing, rectifier bridge, electric capacity in the rectification stream filter circuit, high-power inverter tube BG1～BG4, current transformer LM1 in the inverter circuit, LM2 device are at the inboard power input of Al-alloy casing, arrange to power output end successively, module, variable-frequency transformer T1 that the output high-frequency rectification circuit constitutes directly are bonded at aluminium alloy upper shell inboard, output resistor LO, output filter capacitor CO device are at power supply positive and negative electrode output, and the positive and negative electrode output adopts copper bar to link to each other with internal circuit respectively.High-power inverting element constitutes resonator with upper shell in the aluminium alloy upper shell, satisfies the ZVT requirement.The starting relay device is on the aluminium alloy upper shell.
Operation principle: alternating current is transformed to direct current through current rectifying and wave filtering circuit and is transformed to the 100KHz high-frequency alternating current through H type full-bridge phase-shifting resonance inverter circuit again, be coupled to by high frequency transformer T1 and secondaryly become direct current output through rectifying and wave-filtering again, the adjusting of the magnitude of current of output realizes by control circuit phase shift angle.
Aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder has following characteristics:
1, aluminium alloy totally enclosed frame die cast, intensity height, light weight, the welding machine of being produced is light, attractive in appearance, be easy to processing;
2, adopt totally-enclosed aluminum alloy casing, capability of electromagnetic shielding is good, the degree of protection height, and its internal circuit and extraneous blocking-up have solved headachy inner member circuit surface laying dust since the long expiration, moisture absorption problem, are fit to use in the electric welding machine lowered in field environment;
3, aluminium alloy good heat conductivity, the heat that elements such as power model, transformer can be sent directly conduction are given aluminum alloy casing, utilize shell that heat is distributed, and heat-transfer effect is good, rapid heat dissipation, and the inner member temperature rise is low, has improved the reliability of welding machine;
4, utilize the high-frequency soft switch technology, adopt said structure to constitute resonator, simple in structure, parameter stability, because this circuit adopts 100KHz with upper frequency work, the volume and the weight of output transformer and inductance can be very little; Because adopt the work of phase-shifting resonance zero passage voltage switch, loss is little; Adopting the aluminium alloy totally enclosed frame radiator of holding concurrently, is 200A when following at output current, and complete machine weight is 7Kg only, and output current is 400A when following, and complete machine weight is less than 14Kg.
Its volume is little, in light weight, cost is low, easy use, security performance are good, and long service life is easy to carry.
5, the utility model aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder is suitable for various acid, basic electrode welding, and the plain welding rod of Muller's fibers welds downwards, all ferrous metal such as suitable welding is low, medium carbon steel and steel alloy.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is an aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder schematic diagram.
Fig. 2 is the upper shell intra resonant cavity components and parts distribution schematic diagram of aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder.
Fig. 3 is the electrical schematic diagram of aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder.
The specific embodiment
With reference to accompanying drawing 1～3, aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder structure comprises the aluminium alloy totally enclosed frame, cooling fan cover, control circuit board, high-power conversion fraction.The aluminium alloy totally enclosed frame is made of aluminium alloy upper shell 3, aluminium alloy lower house 1, the aluminium alloy upper and lower casing is provided with radiated rib 2, device has high-power conversion fraction in the aluminium alloy upper shell 3, device has control circuit board in the aluminium alloy lower house, aluminium alloy upper shell upper unit has cooling fan cover 4, device has cooling fan 5 in the cooling fan cover 4, be used for the air cooling Al-alloy casing, aluminium alloy upper shell one end is provided with the electric power incoming line mouth, and the other end is provided with anodal accessory power outlet 6, negative pole accessory power outlet 8.Device has current adjusting knob 7, handle 9 on the Al-alloy casing.
High-power conversion fraction is made up of current rectifying and wave filtering circuit, inverter circuit, output high-frequency rectification circuit.Rectification, filter circuit are made of rectifier bridge, filter capacitor C1; Inverter circuit is made up of high-power inverter tube BG1～BG4, high frequency transformer T1, inductance L 1, current transformer LM1, LM2.
The output high-frequency rectification circuit is made up of arc ignition circuit, power output circuit, high-frequency filter circuit.Arc ignition circuit is made up of commutation diode D3, D4, resistance R 1; Power output circuit is made up of heavy-duty diode D1, D2, capacitor C 2, C3, resistance R 2, R3; High-frequency filter circuit is made up of reactor LO, resistance R 4, capacitor C O.
In high-power conversion fraction circuit, high-power inverter tube BG1～BG4 and high frequency transformer T1 connect to form H type full-bridge phase-shifting resonance inverter circuit, connect by current transformer LM1, LM2 between the two halves brachium pontis, constitute distinguished current sampling circuit.One group of output of high frequency transformer T1 winding links to each other with heavy-duty diode D1, D2 negative terminal by commutation diode D3, D4, current-limiting resistance R1, another group output winding of high frequency transformer T1 links to each other with heavy-duty diode D1, D2 negative terminal, heavy-duty diode D1, D2 negative pole link to each other with filter capacitor CO, resistance R 4 by reactor LO, constitute power supply output cathode end, the common port of high frequency transformer T1 links to each other with filter capacitor CO, resistance R 4, constitutes power supply output negative pole end.
High-power inverter tube BG1～BG4 can adopt the high-power inverter tubes of type such as IGBT.
Control circuit board comprises Switching Power Supply, power driving circuit, phase-shift PWM circuit, peak point current control circuit.It is that the center constitutes that Switching Power Supply adopts the UC3844 power supply chip.Power driving circuit is made of driving amplifying circuit, high-frequency drive transformer, waveform finishing circuit.Drive amplifying circuit and adopt MIC4420 or 4421 etc. to amplify chip, the waveform finishing circuit adopts formations such as FET IRFD9120.The phase-shift PWM circuit adopts UC3877 or UC3879 integrated chip.The peak point current control circuit can adopt 74HC05 digital circuit integrated chip, voltage comparator integrated chip LM339.
The main components and parts device of high-power conversion fraction is in aluminium alloy upper casing 3, rectifier bridge in the current rectifying and wave filtering circuit, electric capacity, high-power inverter tube 13 in the inverter circuit (BG1～BG4), current transformer 14 (LM1, LM2) device is at the inboard power input 11 of Al-alloy casing, successively to power output end 6,8 arrange, the module 16 that the output high-frequency rectification circuit constitutes, high frequency transformer 20 (T1) directly is bonded at aluminium alloy upper shell 3 inboards, output resistor 18 (LO), output filter capacitor 19 (CO) device at power supply just, cathode output end 6,8, just, cathode output end 6,8 adopt copper bar 17 to link to each other with internal circuit respectively.High-power inverting element constitutes resonator with upper shell in the aluminium alloy upper shell 3, satisfies the ZVT requirement.Starting relay 10 devices are on the aluminium alloy upper shell.
Claims (4)
1, a kind of aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder, it is characterized in that structure comprises the aluminium alloy totally enclosed frame, the cooling fan cover, control circuit board, high-power conversion fraction, the aluminium alloy totally enclosed frame is by the aluminium alloy upper shell, the aluminium alloy lower house constitutes, device has high-power conversion fraction in the aluminium alloy upper shell, device has control circuit board in the aluminium alloy lower house, high-power conversion fraction is by current rectifying and wave filtering circuit, inverter circuit, the output high-frequency rectification circuit is formed, and control circuit board comprises Switching Power Supply, power driving circuit, the phase-shift PWM circuit, the peak point current control circuit.
2, aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder according to claim 1 is characterized in that the aluminium alloy upper and lower casing is provided with radiated rib.
3, aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder according to claim 1, it is characterized in that the rectification of high-power conversion fraction, filter circuit is by rectifier bridge, filter capacitor constitutes, inverter circuit is by high-power inverter tube BG1～BG4, high frequency transformer T1, inductance L 1, current transformer LM1, LM2 forms, the output high-frequency rectification circuit is by arc ignition circuit, power output circuit, high-frequency filter circuit is formed, arc ignition circuit is by commutation diode D3, D4, resistance R 1 is formed, power output circuit is by heavy-duty diode D1, D2, capacitor C 2, C3, resistance R 2, R3 forms, and high-frequency filter circuit is by reactor LO, resistance R 4, capacitor C O forms;
In high-power conversion fraction circuit, high-power inverter tube BG1～BG4 and high frequency transformer T1 connect to form H type full-bridge phase-shifting resonance inverter circuit, pass through current transformer LM1 between the two halves brachium pontis, LM2 connects, constitute current sampling circuit, one group of output of high frequency transformer T1 winding is by commutation diode D3, D4, current-limiting resistance R1 and heavy-duty diode D1, the D2 negative terminal links to each other, high frequency transformer T1 another group output winding and heavy-duty diode D1, the D2 negative terminal links to each other, heavy-duty diode D1, the D2 negative pole is by reactor LO and filter capacitor CO, resistance R 4 links to each other, constitute power supply output cathode end, the common port of high frequency transformer T1 and filter capacitor CO, resistance R 4 links to each other, and constitutes power supply output negative pole end.
4, aluminium alloy totally enclosed frame phase-shifting resonance inverter type welder according to claim 1, it is characterized in that high-power conversion fraction rectification, rectifier bridge in the filter circuit, electric capacity, high-power inverter tube BG1～BG4 in the inverter circuit in the inverter circuit, current transformer LM1, the LM2 device is at the inboard power input of Al-alloy casing, arrange to power output end successively, the module that the output high-frequency rectification circuit constitutes, high frequency transformer T1 directly is bonded at aluminium alloy upper shell inboard, output resistor LO, output filter capacitor CO device at power supply just, cathode output end, just, cathode output end adopts copper bar to link to each other with internal circuit respectively; High-power inverting element constitutes resonator with upper shell in the aluminium alloy upper shell, satisfies the ZVT requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069611 CN2780396Y (en) | 2005-01-05 | 2005-01-05 | Phase shift resonance contravariant welding machine for aluminium alloy full sealed external shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069611 CN2780396Y (en) | 2005-01-05 | 2005-01-05 | Phase shift resonance contravariant welding machine for aluminium alloy full sealed external shell |
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| Publication Number | Publication Date |
|---|---|
| CN2780396Y true CN2780396Y (en) | 2006-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069611 Expired - Fee Related CN2780396Y (en) | 2005-01-05 | 2005-01-05 | Phase shift resonance contravariant welding machine for aluminium alloy full sealed external shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899220A (en) * | 2015-12-17 | 2017-06-27 | 罗伯特·博世有限公司 | Rectification circuit |
-
2005
- 2005-01-05 CN CN 200520069611 patent/CN2780396Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899220A (en) * | 2015-12-17 | 2017-06-27 | 罗伯特·博世有限公司 | Rectification circuit |
| CN106899220B (en) * | 2015-12-17 | 2020-12-29 | 罗伯特·博世有限公司 | Rectifying circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060517 |