CN103203533A - High-frequency inverter direct current welder - Google Patents
High-frequency inverter direct current welder Download PDFInfo
- Publication number
- CN103203533A CN103203533A CN 201210006861 CN201210006861A CN103203533A CN 103203533 A CN103203533 A CN 103203533A CN 201210006861 CN201210006861 CN 201210006861 CN 201210006861 A CN201210006861 A CN 201210006861A CN 103203533 A CN103203533 A CN 103203533A
- Authority
- CN
- China
- Prior art keywords
- circuit
- welder
- voltage
- welding
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arc Welding Control (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to welding equipment and particularly provides a high-frequency inverter direct current welder. The high-frequency inverter direct current welder comprises a 220V alternating current voltage input, a rectifier filter circuit, a power conversion circuit, a rectifier circuit and a welding output which are sequentially connected to form a loop, wherein the welding output, a current sampling circuit, a CPU (Central Processing Unit) circuit and a fault protection circuit form a loop which is connected into the output end of the rectifier filter circuit. The CPU circuit, a PWM (Pulse Width Modulation) generating and controlling circuit with 20KHZ, a floating drive circuit and the power conversion circuit form a loop. A floating drive, a fan and a DC24V power supply generation circuit with PWM are arranged between the PWM generating and controlling circuit with 20KHZ and the output end of the rectifier filter circuit; an upper-layer high-voltage circuit zone is arranged inside a casing; an intermediate support board for isolating a high-voltage zone from a low-voltage zone is arranged between an upper layer and a lower layer; and the lower layer comprises a low-voltage circuit zone, a heat radiator and a fan. The high-frequency inverter direct current welder disclosed by the invention has the advantages of stable output power, compact structure and favorable heat discharging, water resisting and fog resisting performances.
Description
Technical field
The present invention relates to welding equipment, relate in particular to a kind of high-frequency inversion DC welder, be mainly used in the welding between sheet metal and the hardware interface.
Background technology
Traditional resistance welding power source mainly is interchange, direct current frequency spot welding machine, is the control of finishing welding current by the size of adjusting thyristor operating angle, technical comparative maturity, but bulky.Because single-phase input, the energy consumption height, efficient is low and bad dynamic performance, and control accuracy is not high.So, mains frequency resistance welding machine electrical network coupling difficulty, power factor is low, and power consumption is big, and efficient is low; It is big to splash, poor welding quality.
Arrived the eighties and occurred the medium frequency inverter electric resistance welding abroad, power supply is three-phase by original single-phase lifting, and the operating frequency of transformer is risen to about 1000HZ by 50HZ.The volume of intermediate frequency resistance welder greatly reduces, and efficient also promotes to some extent.The welding efficiency of direct current intermediate frequency electric resistance welding is significantly improved than A.C. welder, more than the energy-conservation 60%-70%.But the control cabinet of intermediate frequency direct current resistance welder is bulky, the cost height, and fetch long price, domestic enterprise seldom uses.
Condenser discharge resistance welding is made up of charging transformer, storage capacitor and welding transformer, and its volume of energy storage electric resistance welding of equal capacity is huge especially, and applicable situation is subjected to very big restriction.Condenser discharge resistance welder, the output welding energy is little, is difficult to satisfy the demand in welding market.
Present its control circuit of most of inverter all is to have adopted pulse width modulating chip, complex circuit designs, debug difficulties.Its electric current, voltage signal are difficult to handle according to demand.
The Inverter Welder that occurs on the market have the advantages that dynamic response is good, control accuracy is high, but power output is too little, generally only is applicable to the welding of foil.The disclosed a kind of high-frequency invert direct-current point-welding device of more powerful Inverter Welder such as CN101422846 Chinese patent comprises rectified three-phase circuit, inverter circuit, high frequency transformer, current rectifying and wave filtering circuit and dsp controller.Open circuit design can't be guaranteed the stability of power output.Cramped construction design and heat extraction, waterproofing design are not considered in the design of this high-frequency invert direct-current point-welding device.
Summary of the invention
At problems of the prior art, the object of the present invention is to provide a kind of high-frequency inversion DC welder, power output is stable.
Another object of the present invention provides a kind of high-frequency inversion DC welder, compact conformation, and have good heat extraction and waterproof, anti-fog performance.
To achieve these goals, the invention provides following technical scheme:
A kind of high-frequency inversion DC welder of the present invention comprises the input of 220V alternating voltage, current rectifying and wave filtering circuit, power conversion circuit, rectification circuit and the welding output that are in turn connected into the loop.Described welding output and current sampling circuit, cpu circuit, fault secure circuit form the loop and insert rectification filter circuit output end.The PWM generation of cpu circuit, 20KHZ and control circuit, floating crystal drive circuit and power conversion circuit form the loop.Floating drive and the DC24V power supply of blower fan and PWM produces circuit and is located between the PWM generation and control circuit and rectification filter circuit output end of 20KHZ.
Described power conversion circuit is for the power output of adjusting welding machine.
Described cpu circuit is for the function of the whole welding machine each several part of logic control.
Described fault secure circuit is used for breaking down at welding machine, and cpu circuit detects when unusual, stops welding machine work.
The PWM of described 20KHZ produces and control circuit, and the high frequency voltage that produces 20KHZ is used for welding output.
Described floating crystal drive circuit is used for dynamic adjustments, and the high frequency voltage of 20KHZ is remained on constant voltage status.
Described current sampling circuit is used for the sampling of welding machine output current, and data are sent to cpu circuit, forms feedback circuit, in order to dynamically adjust the stable power of output.
Preferably, described power conversion circuit comprises active absorption, switching tube and power transformer.
Preferably, described floating crystal drive circuit comprises floating on-off circuit, floating transformer and the circuit for generating negative voltage of driving of driving.
Preferably, described cpu circuit comprises the manual welding control circuit.
Preferably, described cpu circuit is connected with digital display circuit, is used for the duty that shows welding machine directly perceived.
High-frequency inversion DC welder of the present invention, its enclosure interior comprises the upper strata high voltage circuit area, is provided with supporting plate in the isolation of higher-pressure region and low-pressure area between upper strata and the lower floor, lower floor comprises low-voltage circuit district, radiator and fan.
Preferably, lower floor side and the base plate of described housing are provided with shutter, are used for water smoke or the globule and flow out.
Beneficial effect of the present invention comprises:
1, comprises current sampling circuit and floating crystal drive circuit in the circuit, form feedback circuit, guarantee that the welding machine power output is stable, ensures welding quality.
2, supporting plate was divided into two zones, the upper and lower during the enclosure interior branch was isolated by higher-pressure region and low-pressure area, and high-tension circuit and low-voltage circuit are separated, and met safe design standard, compact conformation.
3, lower floor side and the base plate of housing are provided with shutter, are used for water smoke or the globule and flow out, and ensure that welding machine can use at wet environment.When water sucks from the blower fan of fan, the globule is bonded on the flabellum of blower fan, blower fan runs up and produces centrifugal force and make globule atomizing, water smoke blows away from the shutter outwardly of casing and panel thereof, because the cause of middle supporting plate is arranged, so moisture can not enter the high-tension circuit part, even and the low-pressure section electric elements have moisture attaching the operate as normal that also can not have influence on machine, moisture is little to the low voltage component influence, can not cause electric leakage yet, if moisture is big through the blower fan inlet, in the time of perhaps have to hot vapour atomizing, owing on base plate, also designed shutter outwardly, water also can outwards flow out along shutter, can not rest in the cabinet, even under the working environment of rainy day or humidity, this machine also can safe operate as normal.
Description of drawings
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is shell structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical solution of the present invention is further specified, is not considered as limiting the scope of the invention:
As shown in Figure 1 and Figure 2, a kind of high-frequency inversion DC welder of the present invention comprises the input of 220V alternating voltage, current rectifying and wave filtering circuit, power conversion circuit, rectification circuit and the welding output that are in turn connected into the loop.Described welding output and current sampling circuit, cpu circuit, fault secure circuit form the loop and insert rectification filter circuit output end.The PWM generation of cpu circuit, 20KHZ and control circuit, floating crystal drive circuit and power conversion circuit form the loop.Floating drive and the DC24V power supply of blower fan and PWM produces circuit and is located between the PWM generation and control circuit and rectification filter circuit output end of 20KHZ.
Described power conversion circuit is for the power output of adjusting welding machine.
Described cpu circuit is for the function of the whole welding machine each several part of logic control.
Described fault secure circuit is used for breaking down at welding machine, and cpu circuit detects when unusual, stops welding machine work.
The PWM of described 20KHZ produces and control circuit, and the high frequency voltage that produces 20KHZ is used for welding output.
Described floating crystal drive circuit is used for dynamic adjustments, and the high frequency voltage of 20KHZ is remained on constant voltage status.
Described current sampling circuit is used for the sampling of welding machine output current, and data are sent to cpu circuit, forms feedback circuit, in order to dynamically adjust the stable power of output.
Described power conversion circuit comprises active absorption, switching tube and power transformer.
Described floating crystal drive circuit comprises floating on-off circuit, floating transformer and the circuit for generating negative voltage of driving of driving.
Described cpu circuit comprises the manual welding control circuit.
Described cpu circuit is connected with digital display circuit, is used for the duty that shows welding machine directly perceived.
High-frequency inversion DC welder of the present invention, its enclosure interior comprises the upper strata high voltage circuit area, is provided with supporting plate in the isolation of higher-pressure region and low-pressure area between upper strata and the lower floor, lower floor comprises low-voltage circuit district, radiator and fan.
Lower floor side and the base plate of described housing are provided with shutter, are used for water smoke or the globule and flow out.
Claims (7)
1. high-frequency inversion DC welder, comprise the input of 220V alternating voltage, current rectifying and wave filtering circuit, power conversion circuit, rectification circuit and the welding output that are in turn connected into the loop, it is characterized in that: described welding output and current sampling circuit, cpu circuit, fault secure circuit form the loop and insert rectification filter circuit output end; The PWM generation of cpu circuit, 20KHZ and control circuit, floating crystal drive circuit and power conversion circuit form the loop; Floating drive and the DC24V power supply of blower fan and PWM produces circuit and is located between the PWM generation and control circuit and rectification filter circuit output end of 20KHZ.
2. a kind of high-frequency inversion DC welder as claimed in claim 1, it is characterized in that: described power conversion circuit comprises active absorption, switching tube and power transformer.
3. a kind of high-frequency inversion DC welder as claimed in claim 1 is characterized in that: described floating crystal drive circuit comprises floating on-off circuit, floating transformer and the circuit for generating negative voltage of driving of driving.
4. a kind of high-frequency inversion DC welder as claimed in claim 1, it is characterized in that: described cpu circuit comprises the manual welding control circuit.
5. as any one described a kind of high-frequency inversion DC welder among the claim 1-4, it is characterized in that: described cpu circuit is connected with digital display circuit, is used for the duty that shows welding machine directly perceived.
6. as any one described a kind of high-frequency inversion DC welder among the claim 1-4, it is characterized in that: enclosure interior comprises the upper strata high voltage circuit area, be provided with supporting plate in the isolation of higher-pressure region and low-pressure area between upper strata and the lower floor, lower floor comprises low-voltage circuit district, radiator and fan.
7. a kind of high-frequency inversion DC welder as claimed in claim 6, it is characterized in that: lower floor side and the base plate of described housing are provided with shutter, are used for water smoke or the globule and flow out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210006861 CN103203533A (en) | 2012-01-11 | 2012-01-11 | High-frequency inverter direct current welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210006861 CN103203533A (en) | 2012-01-11 | 2012-01-11 | High-frequency inverter direct current welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103203533A true CN103203533A (en) | 2013-07-17 |
Family
ID=48751050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210006861 Pending CN103203533A (en) | 2012-01-11 | 2012-01-11 | High-frequency inverter direct current welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103203533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300594A (en) * | 2016-08-31 | 2017-01-04 | 黄元其 | A kind of heavy current supply system |
-
2012
- 2012-01-11 CN CN 201210006861 patent/CN103203533A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300594A (en) * | 2016-08-31 | 2017-01-04 | 黄元其 | A kind of heavy current supply system |
| CN106300594B (en) * | 2016-08-31 | 2018-09-11 | 黄元其 | A kind of heavy current supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211759095U (en) | Multifunctional welding machine | |
| CN203523130U (en) | Single-phase energy storage 30Kw high frequency high voltage generator | |
| CN204030969U (en) | Medical high-frequency high voltage power supply | |
| CN205946222U (en) | Low-power standby circuit and induction cooker | |
| CN210745827U (en) | Electromagnetic heater power supply capable of isolating and radiating | |
| CN103203534A (en) | High-frequency inverter direct current welder | |
| CN103203533A (en) | High-frequency inverter direct current welder | |
| CN104848416B (en) | Manual control cold air conditioner with dual purposes of alternating current and photovoltaic direct current | |
| CN101917812A (en) | Metal halide lamp power supply and method for lighting metal halide lamp | |
| CN210579315U (en) | Electromagnetic heater power supply with ultra-undervoltage protection function | |
| CN103042290A (en) | Miniature heatproof moisture-proof welder | |
| CN202106127U (en) | CPU-controlled high-power portable electric welding machine | |
| CN211266773U (en) | High-frequency three-phase safety power supply device and high-frequency three-phase safety power supply system | |
| CN207010558U (en) | A kind of two way convertor | |
| CN207134980U (en) | A kind of electrostatic precipitator power supply | |
| CN203180748U (en) | General frequency converter | |
| CN202997906U (en) | High frequency switching power supply for electrostatic dust removal | |
| CN208890578U (en) | A kind of Speed Regulation by Changing Frequency on Three phase Asynchionous Motor device | |
| CN207321098U (en) | A kind of band communication interface pressure regulation high frequency switch power | |
| CN207235295U (en) | A kind of multimode suitching type electricity-saving appliance | |
| CN220073521U (en) | Industrial inverter AC/DC argon arc welding machine | |
| CN205429729U (en) | Economizer system is improved to electric energy quality | |
| CN205702800U (en) | Gas-shielded welder | |
| CN114401563B (en) | Heater | |
| CN204295099U (en) | Manual welding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130717 |