CN102806407A - Inverter welding machine - Google Patents
Inverter welding machine Download PDFInfo
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- CN102806407A CN102806407A CN2012102106196A CN201210210619A CN102806407A CN 102806407 A CN102806407 A CN 102806407A CN 2012102106196 A CN2012102106196 A CN 2012102106196A CN 201210210619 A CN201210210619 A CN 201210210619A CN 102806407 A CN102806407 A CN 102806407A
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- type welder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides an inverter welding machine which comprises a switch, a driving circuit, a main circuit, a control circuit, a pulse width modulation (PWM) output circuit and a detection circuit, wherein the switch is respectively and electrically connected with the driving circuit, the main circuit, the control circuit, the PWM output circuit and the detection circuit; and the main circuit consists of a first rectifier circuit, a filter circuit, an inverter circuit, a transformer circuit, a second rectifier circuit and an output circuit. According to the inverter welding machine disclosed by the invention, a current peak is reduced, and thus the impact on a powder grid is reduced; input current harmonics are reduced, and thus the pollution to the power grid is greatly reduced; and in addition, compared with a electrolytic capacitor, a non-polarized capacitor has the characteristic that the service life is greatly prolonged, so that the cost is saved.
Description
Technical field
The present invention relates to inverter type welder, be meant a kind of IGBT contravariant numeral CO2 shield welder especially.
Background technology
At present the IGBT inverter type welder in obtain the main flow that extensive use IGBT inverter type welder becomes inverter type welder in the powerful inverter type welder, covered SMAW, argon arc welding, CO2 gas shielded arc welding.It is little, in light weight that all Arc Welding Power fields such as metal argon arc welding, IGBT inverter type welder have a volume, and the welding control that becomes more meticulous can be realized in the power and energy saving, and weak point is a complicated circuit.Electrical network is had harmonic pollution: the input side of inverter type welder adopts the filtering of diode rectification electrochemical capacitor, and is bigger to the dash current of electrical network.Intelligent degree is not enough.
At present the IGBT inverter type welder exists following not enough: (1) complicated circuit, and because of there is the switching process of rectification-inversion-again in inverter type welder, the circuit link is more, so cause very complicacy of control circuit; (2) input side because of welding machine adopts the filtering of diode rectification electrochemical capacitor, and is bigger to the dash current of electrical network, so electrical network is had harmonic pollution; (3) intellectuality has much room for improvement.
Summary of the invention
The present invention proposes a kind of inverter type welder; Solved inverter type welder complicated circuit in the prior art, electrical network has been had harmonic pollution and intelligent low problem; The present invention adopts high-frequency pole-free property electric capacity at the input side filter circuit of inverter type welder; Be the CBB capacity cell, when using inverter type welder of the present invention to carry out manual metal-arc welding, have only the IGBT contravariant digitlization CO2 gas shielded arc welding of weak electric signal and the dual-purpose welding machine of manual metal-arc welding zero load.
Technical scheme of the present invention is achieved in that
A kind of inverter type welder, it comprises switch, drive circuit, main circuit, control circuit, pulse width modulation (PWM) output circuit and testing circuit;
Said switch and said drive circuit, said main circuit, said control circuit, said PWM output circuit and said testing circuit all electrically connect;
Said main circuit is made up of first rectification circuit, filter circuit, inverter circuit, transforming circuit, second rectification circuit and output circuit; Said first rectification circuit and said filter circuit electrically connect; Said filter circuit and said inverter circuit electrically connect; Said inverter circuit and said transforming circuit electrically connect; Said transforming circuit and said second rectification circuit electrically connect, and said second rectification circuit and said output circuit electrically connect;
Said control circuit is electrically connected to said PWM output circuit, and said PWM output circuit and said inverter circuit electrically connect;
Said testing circuit comprises feedback circuit and signal input testing circuit, and said feedback circuit and the electric connection of said signal input testing circuit, and said testing circuit is electrically connected to said second rectification circuit.
Further, said filter circuit comprises filter, and said filter is a polypropylene CBB electric capacity.
Further, be provided with the power supply that power is provided for said inverter type welder in the said drive circuit.
Further, be provided with single-chip microcomputer in the said control circuit.
Further, said transforming circuit comprises insulated gate bipolar transistor IGBT module and insulated gate bipolar transistor IGBT electric capacity baffle.
Further, said switch is an air switch.
Further, said inverter type welder further comprises balancing capacitance.
First rectification circuit of inverter type welder of the present invention adopts high-frequency pole-free property electric capacity as filter element, and it has reduced current spike, reduces the impact to electrical network, reduces Harmonics of Input, has reduced the pollution to electrical network greatly; Secondly polarity free capacitor is compared electrochemical capacitor, and its life-span has prolonged many, so provide cost savings; In addition, complicated soft starting circuit has also been saved in the use of high-frequency pole-free property electric capacity; And when switching to the manual metal-arc welding state, its zero load has only a very low weak electric signal, the not inversion of IGBT module; When the user touches workpiece to welding rod; Weak electric signal changes the back and reaches control panel through the output testing circuit, and control panel starts PWM, and IGBT begins the successful process of inversion striking; IGBT closes again when user's inoperation; The benefit of design is like this: (1) floating voltage has only weak electric signal, has ensured user's safety; (2) prolong the service life of IGBT module, provide cost savings, realized intellectuality.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structured flowchart of inverter type welder of the present invention;
Fig. 2 is the circuit structure diagram of inverter type welder main frame of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With reference to Fig. 1 and Fig. 2, a kind of inverter type welder (not shown), it comprises switch 1, drive circuit 2, main circuit (not shown), control circuit (not shown), pulse width modulation (PWM) output circuit (not shown) and testing circuit (not shown); Said switch 1 and said drive circuit 2, said main circuit, said control circuit, said PWM output circuit and said testing circuit all electrically connect; Said main circuit is made up of first rectification circuit 3, filter circuit 4, inverter circuit 5, transforming circuit 6, second rectification circuit 7 and output circuit 8; Said first rectification circuit 3 electrically connects with said filter circuit 4; Said filter circuit 4 electrically connects with said inverter circuit 5; Said inverter circuit 5 electrically connects with said transforming circuit 6; Said transforming circuit 6 electrically connects with said second rectification circuit 7, and said second rectification circuit 7 electrically connects with said output circuit 8; Said control circuit is electrically connected to said PWM output circuit, and said PWM output circuit and said inverter circuit 5 electrically connect; Said testing circuit comprises feedback circuit (not shown) and signal input testing circuit (not shown), and said feedback circuit and the electric connection of said signal input testing circuit, and said testing circuit is electrically connected to said second rectification circuit 7.
Said first rectification circuit 3 in the inverter type welder of the present invention is a three-phase commutation bridge, and the ac voltage rectifier that power supply is exported becomes DC voltage.Said filter circuit is provided with electric capacity, and the DC voltage in the three-phase commutation bridge is carried out filtering.
Further, said filter circuit 4 comprises filter C, and said filter C is a polypropylene CBB electric capacity.The setting of said CBB electric capacity reduces current spike, reduces the impact to electrical network, has reduced Harmonics of Input, has reduced the pollution to electrical network greatly; And the life-span of its life-span than electrochemical capacitor prolonged many; Saved complicated soft starting circuit.
Further, be provided with the power supply (not shown) that power is provided for said inverter type welder in the said drive circuit 2.
Further, be provided with single-chip microcomputer (not shown) in the said control circuit.The setting of said single-chip microcomputer combines a plurality of circuit elements devices, has not only significantly reduced electronic devices and components; And improved the space availability ratio of equipment; The user can too much with the circuit wrong, not reduce rate of breakdown because of connecting line in use; And the user is also very convenient when maintenance.
Further, said inverter circuit 5 comprises insulated gate bipolar transistor IGBT module 51 and insulated gate bipolar transistor IGBT electric capacity baffle 52.IGBT (Insulated Gate Bipolar Transistor); Insulated gate bipolar transistor; By the compound full-control type voltage driven type power semiconductor that BJT (double pole triode) and MOS (insulating gate type field effect tube) form, have the advantage of low conduction voltage drop two aspects of high input impedance and the GTR of MOSFET concurrently.The GTR saturation pressure reduces, and current carrying density is big, but drive current is bigger; The MOSFET driving power is very little, and switching speed is fast, but conduction voltage drop is big, and current carrying density is little.IGBT combines the advantage of above two kinds of devices, and the little and saturation pressure of driving power reduces.Be fit to very much to be applied to DC voltage and be fields such as 600V and above converter system such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, traction transmission.
Said IGBT electric capacity baffle comprises that first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5 and the 6th capacitor C 6, the first capacitor C 1 and second capacitor C 2 are connected in parallel, and form the combination of first electric capacity; The 3rd capacitor C 3 and the 4th capacitor C 4 are connected in parallel, and form the combination of second electric capacity; The 5th capacitor C 5 and the 6th capacitor C 6 are connected in parallel, and form the combination of the 3rd electric capacity; The combination of first electric capacity, the combination of second electric capacity are merged couplet with the 3rd capacitance group and be connected, just form IGBT electric capacity baffle.
Further, said switch 1 is an air switch.The setting of air switch, except accomplishing contact and dividing the deenergizing, the short circuit that still can take place circuit or electrical equipment. seriously overload and under-voltage etc. are protected, simultaneously can be not yet actuating motor continually.
Further, said inverter type welder further comprises balancing capacitance.Said balancing capacitance comprises the 7th capacitor C 7, the 8th capacitor C 8, the 9th capacitor C 9, first node 91, second node 92, the 3rd node 93 and the 4th node 94; Said first capacitor C 1 is located between said first node 91 and said the 4th node 94; Said second capacitor C 2 is located between said second node 92 and said the 4th node 94, and said the 3rd capacitor C 3 is located between said the 3rd node 93 and said the 4th node 94.
Inverter type welder of the present invention is when work, and earlier with switch opens, power supply is that whole inverter type welder provides driving power, and three-phase commutation bridge becomes DC voltage with the ac voltage rectifier that power supply provides, and makes things convenient for other components and parts work; Said filter circuit carries out filtering with DC voltage; Said inverter circuit is reverse into midfrequent ac voltage with IGBT with DC voltage; Midfrequent ac voltage is applied to transforming circuit; Alternating voltage after the step-down is rectified into DC voltage through second rectification circuit, is carrying out filtering, and level and smooth DC voltage is just exported by the output of inverter type welder.
First rectification circuit of inverter type welder of the present invention adopts high-frequency pole-free property electric capacity as filter element, and it has reduced current spike, reduces the impact to electrical network, reduces Harmonics of Input, has reduced the pollution to electrical network greatly; Secondly polarity free capacitor is compared electrochemical capacitor, and its life-span has prolonged many, so provide cost savings; In addition, complicated soft starting circuit has also been saved in the use of high-frequency pole-free property electric capacity; And when switching to the manual metal-arc welding state, its zero load has only a very low weak electric signal, the not inversion of IGBT module; When the user touches workpiece to welding rod; Weak electric signal changes the back and reaches control panel through the output testing circuit, and control panel starts PWM, and IGBT begins the successful process of inversion striking; IGBT closes again when user's inoperation; The benefit of design is like this: (1) floating voltage has only weak electric signal, has ensured user's safety; (2) prolong the service life of IGBT module, provide cost savings, realized intellectuality.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an inverter type welder is characterized in that, comprises switch, drive circuit, main circuit, control circuit, pulse width modulation (PWM) output circuit and testing circuit;
Said switch and said drive circuit, said main circuit, said control circuit, said PWM output circuit and said testing circuit all electrically connect;
Said main circuit is made up of first rectification circuit, filter circuit, inverter circuit, transforming circuit, second rectification circuit and output circuit; Said first rectification circuit and said filter circuit electrically connect; Said filter circuit and said inverter circuit electrically connect; Said inverter circuit and said transforming circuit electrically connect; Said transforming circuit and said second rectification circuit electrically connect, and said second rectification circuit and said output circuit electrically connect;
Said control circuit is electrically connected to said PWM output circuit, and said PWM output circuit and said inverter circuit electrically connect;
Said testing circuit comprises feedback circuit and signal input testing circuit, and said feedback circuit and the electric connection of said signal input testing circuit, and said testing circuit is electrically connected to said second rectification circuit.
2. inverter type welder as claimed in claim 1 is characterized in that said filter circuit comprises filter, and said filter is a polypropylene CBB electric capacity.
3. inverter type welder as claimed in claim 2 is characterized in that, is provided with the power supply that power is provided for said inverter type welder in the said drive circuit.
4. inverter type welder as claimed in claim 3 is characterized in that, is provided with single-chip microcomputer in the said control circuit.
5. like the inverter type welder described among the claim 1-4 each, it is characterized in that said transforming circuit comprises insulated gate bipolar transistor IGBT module and insulated gate bipolar transistor IGBT electric capacity baffle.
6. inverter type welder as claimed in claim 5 is characterized in that, said switch is an air switch.
7. inverter type welder as claimed in claim 6 is characterized in that said inverter type welder further comprises balancing capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210619.6A CN102806407B (en) | 2012-06-26 | 2012-06-26 | Inverter welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210619.6A CN102806407B (en) | 2012-06-26 | 2012-06-26 | Inverter welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102806407A true CN102806407A (en) | 2012-12-05 |
| CN102806407B CN102806407B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210210619.6A Expired - Fee Related CN102806407B (en) | 2012-06-26 | 2012-06-26 | Inverter welding machine |
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| CN (1) | CN102806407B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100785A (en) * | 2013-02-28 | 2013-05-15 | 广州市长胜焊接设备实业有限公司 | Digitization inversion arc welding machine output pole short circuit automatic protection system |
| CN103706923A (en) * | 2013-12-24 | 2014-04-09 | 浙江颐顿机电有限公司 | Inverter welder |
| CN104065362A (en) * | 2014-06-27 | 2014-09-24 | 上海沪工焊接集团股份有限公司 | Inverter welding machine no-load pulse width limiting circuit |
| CN114147320A (en) * | 2021-12-30 | 2022-03-08 | 浙江业世焊接科技有限公司 | Welding machine circuit with plasma cutting function |
| CN114192934A (en) * | 2021-12-30 | 2022-03-18 | 浙江业世焊接科技有限公司 | Argon arc welding control circuit |
| CN114211094A (en) * | 2021-12-29 | 2022-03-22 | 浙江业世焊接科技有限公司 | Welding machine control circuit based on PFC circuit |
| CN114226919A (en) * | 2022-01-04 | 2022-03-25 | 浙江业世焊接科技有限公司 | Welding machine control circuit based on single chip microcomputer control |
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| JPH01181974A (en) * | 1988-01-14 | 1989-07-19 | Toyota Motor Corp | Arc welding power source |
| CN2678812Y (en) * | 2003-12-12 | 2005-02-16 | 徐景华 | Inversion welder |
| CN1623717A (en) * | 2004-12-14 | 2005-06-08 | 天力管件有限公司 | Convertion portable copper pipe hard soldering machine |
| CN2930942Y (en) * | 2005-11-07 | 2007-08-08 | 北京时代科技股份有限公司 | Multiheaded inversion welder and input control circuit thereof |
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| CN102000900A (en) * | 2010-10-21 | 2011-04-06 | 赵玉林 | Digital intelligent electric welder |
| CN202655764U (en) * | 2012-06-26 | 2013-01-09 | 晋江市炜锋焊接设备有限公司 | Inverter welding machine |
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2012
- 2012-06-26 CN CN201210210619.6A patent/CN102806407B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01181974A (en) * | 1988-01-14 | 1989-07-19 | Toyota Motor Corp | Arc welding power source |
| CN2678812Y (en) * | 2003-12-12 | 2005-02-16 | 徐景华 | Inversion welder |
| CN1623717A (en) * | 2004-12-14 | 2005-06-08 | 天力管件有限公司 | Convertion portable copper pipe hard soldering machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100785A (en) * | 2013-02-28 | 2013-05-15 | 广州市长胜焊接设备实业有限公司 | Digitization inversion arc welding machine output pole short circuit automatic protection system |
| CN103100785B (en) * | 2013-02-28 | 2015-11-25 | 广州长胜机电有限公司 | A kind of digitlization inverter arc welding machine output stage short circuit automatic protective system |
| CN103706923A (en) * | 2013-12-24 | 2014-04-09 | 浙江颐顿机电有限公司 | Inverter welder |
| CN103706923B (en) * | 2013-12-24 | 2015-09-09 | 浙江颐顿机电有限公司 | A kind of inversion welding machine |
| CN104065362A (en) * | 2014-06-27 | 2014-09-24 | 上海沪工焊接集团股份有限公司 | Inverter welding machine no-load pulse width limiting circuit |
| CN104065362B (en) * | 2014-06-27 | 2016-06-15 | 上海沪工焊接集团股份有限公司 | Inverter type welder bar pulse width restricting circuits |
| CN114211094A (en) * | 2021-12-29 | 2022-03-22 | 浙江业世焊接科技有限公司 | Welding machine control circuit based on PFC circuit |
| CN114147320A (en) * | 2021-12-30 | 2022-03-08 | 浙江业世焊接科技有限公司 | Welding machine circuit with plasma cutting function |
| CN114192934A (en) * | 2021-12-30 | 2022-03-18 | 浙江业世焊接科技有限公司 | Argon arc welding control circuit |
| CN114226919A (en) * | 2022-01-04 | 2022-03-25 | 浙江业世焊接科技有限公司 | Welding machine control circuit based on single chip microcomputer control |
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| Publication number | Publication date |
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| CN102806407B (en) | 2015-07-15 |
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Owner name: QUANZHOU WEIFENG WELDING EQUIPMENT CO., LTD. Free format text: FORMER NAME: JINJIANG WEIFENG WELDING EQUIPMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Fujian city of Jinjiang province Anhai Town Qiaotou Industrial Zone Patentee after: Wei Feng welding equipment Co., Ltd of Quanzhou City Address before: 362261 Fujian city of Jinjiang province Anhai Town Qiaotou Industrial Zone Patentee before: Jinjiang Weifeng Welding Equipment Co., Ltd. |
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