CN203245482U - High-frequency arc starting circuit with direct-current voltage output - Google Patents
High-frequency arc starting circuit with direct-current voltage output Download PDFInfo
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- CN203245482U CN203245482U CN 201320077645 CN201320077645U CN203245482U CN 203245482 U CN203245482 U CN 203245482U CN 201320077645 CN201320077645 CN 201320077645 CN 201320077645 U CN201320077645 U CN 201320077645U CN 203245482 U CN203245482 U CN 203245482U
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Abstract
The utility model relates to a high-frequency arc starting circuit with direct-current voltage output. The high-frequency arc starting circuit with direct-current voltage output comprises a high-frequency signal source, a relay, a high-frequency boosted circuit and a voltage doubling circuit. After passing through the relay, the high-frequency signal source is respectively connected with the input end of the voltage doubling circuit and the input end of the high-frequency boosted circuit; direct voltage is output to a secondary positive electrode and a secondary negative electrode of a main circuit of a welding machine by the output end of the voltage doubling circuit; the high-frequency boosted circuit generates high-frequency and high-voltage signals, and the high-frequency and high-voltage signals are coupled to the secondary negative electrode of the main circuit of the welding machine and are output. Due to the adoption of the voltage doubling circuit, and the direct voltage is further added on the premise of high-frequency arc starting, air can be more easily broken down in the high-frequency arc starting process, arc starting is more easily carried out, and the arc-starting success rate and the arc starting performance of the welding machine can be improved.
Description
Technical field
The utility model relates to the high-frequency arc ignition circuit with direct voltage output.
Background technology
The existing high-frequency arc ignition circuit that is applied to the welding machine industry is a little less than the striking ability.In actual use, often owing to cold tungsten pin causes for the first time striking difficulty or striking ability not up to standard, thereby cause user's butt welding machine serviceability to throw doubt upon, also use welding machine to bring inconvenience to the user.
Summary of the invention
The purpose of this utility model provides the high-frequency arc ignition circuit with direct voltage output, can improve the striking ability of welding machine, is intended to solve the weak technical problem of existing high-frequency arc ignition circuit striking ability.
The utility model adopts following technical scheme to realize above-mentioned purpose: with the high-frequency arc ignition circuit of direct voltage output, described high-frequency arc ignition circuit is used for machine initial arc, described high-frequency arc ignition circuit comprises high-frequency signal source, relay and high frequency booster circuit, and described high-frequency arc ignition circuit also comprises voltage-multiplying circuit; High-frequency signal source is connected with the input of voltage-multiplying circuit, high frequency booster circuit respectively behind relay; The voltage-multiplying circuit output is to the secondary both positive and negative polarity output dc voltage of main circuit of the welding machine; The high frequency booster circuit produces high-frequency high-voltage signal, and high-frequency high-voltage signal is coupled to the secondary negative pole output of main circuit of the welding machine.
Described voltage-multiplying circuit comprises diode D1, diode D2, diode D3, capacitor C 1 and capacitor C 2, diode D3, diode D2 and diode D1 connect successively, diode D3 anode is connected with the voltage-multiplying circuit input, capacitor C 1 is connected between the series connection node of voltage-multiplying circuit input, diode D3 and diode D2, and capacitor C 2 is connected between the series connection node of voltage-multiplying circuit input, diode D2 and diode D1; The series connection node of diode D2 and diode D1 is drawn an output of voltage-multiplying circuit, and the negative electrode of diode D1 is drawn another output of voltage-multiplying circuit, and diode D1 series resistance R1 output direct current multiplication of voltage voltage is to the secondary positive pole of main circuit of the welding machine.
Described high frequency booster circuit comprises step-up transformer TR, discharge electrode, coupling capacitance and resistance R 5, R6, the primary coil series resistance R3 of step-up transformer TR is connected with high-frequency signal source, discharge electrode links to each other with the secondary coil of step-up transformer TR after connecting with resistance R 5, R6, and the series connection node of discharge electrode and resistance R 5, R6 is connected to the secondary negative pole output of main circuit of the welding machine after coupling capacitance.
Operation principle of the present utility model is as follows: increased voltage-multiplying circuit on traditional high-frequency arc ignition circuit basis, utilize voltage-multiplying circuit the output high-frequency signal to be carried out supplying with behind the voltage multiplying rectifier output of main circuit of the welding machine, thereby improve the striking instant output voltage, disconnect the power supply of this high-frequency signal source after the striking success by Control, voltage-multiplying circuit and high frequency booster circuit are only worked when striking.High-frequency signal is through minute two-way behind the relay: the one tunnel exports to main circuit of the welding machine behind voltage-multiplying circuit, thereby at the output high-voltage dc voltage that superposes; Another road obtains the high-frequency high-voltage signal of the disruptive discharge utmost point after step-up transformer boosts, be coupled to the secondary negative pole output of main circuit of the welding machine again.
Compared with prior art, the beneficial effects of the utility model are:
1, adopt novel electronic circuit, by voltage-multiplying circuit, the direct current voltage that on the high-frequency arc strike basis, superposes again, the easier air that when high-frequency arc strike, punctures, the easier starting the arc can improve arcing initiation success rate and the striking performance of welding machine.
2, the power (increasing the high frequency coil number of turns) by regulating input high-frequency signal realizes that the power of striking ability can be regulated, thereby can be applicable to the different machines wiring board, and easy to use, is swift in motion.
3, high-frequency arc ignition circuit adopts high-voltage arc strike, and cost is low, simple, reliable.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is the connection diagram of the utility model and main circuit of the welding machine.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the utility model comprises high-frequency signal source, relay J 1, voltage-multiplying circuit and high frequency booster circuit; High-frequency signal source is connected with the input of voltage-multiplying circuit, high frequency booster circuit respectively after relay J 1; The voltage-multiplying circuit output is connected with main circuit of the welding machine, and the HVDC that produces and main circuit are in parallel; The high frequency booster circuit produces high-frequency high-voltage signal, and high-frequency high-voltage signal is coupled to the secondary negative pole output of main circuit of the welding machine by high-frequency coupler.As shown in Figure 2, main circuit of the welding machine is the full-bridge hard switching, and secondary commutation is full-wave rectification, and positive pole is added with reactance output, the output of negative pole series connection high-frequency coupling striking coil.
High-frequency signal source is generally taken from the voltage signal of high frequency transformer T secondary coil coiling 4-5 circle as the working power of whole circuit.Relay J 1 is used for the work of control voltage-multiplying circuit and high-frequency circuit and stops, and presses the rifle switch, relay J 1 work, and voltage-multiplying circuit and high-frequency circuit are worked simultaneously.
Voltage-multiplying circuit comprises diode D1, diode D2, diode D3, capacitor C 1 and capacitor C 2, diode D3, diode D2 and diode D1 connect successively, diode D3 anode is connected with high-frequency signal source, capacitor C 1 is connected between the series connection node of voltage-multiplying circuit input and diode D3 and diode D2, and capacitor C 2 is connected between the series connection node of voltage-multiplying circuit input, diode D2 and diode D1; The series connection node of diode D2 and diode D1 is drawn an output of voltage-multiplying circuit, and the negative electrode of diode D1 is drawn another output of voltage-multiplying circuit, and diode D1 series resistance R1 output direct current multiplication of voltage voltage is to the secondary positive pole of main circuit of the welding machine.Two outputs of voltage-multiplying circuit are connected to main circuit of the welding machine after series resistance R1 and the resistance R 2 respectively, give the main circuit of the welding machine output dc voltage.
The high frequency booster circuit comprises step-up transformer TR, discharge electrode, high-voltage capacitance C3, high-voltage capacitance C4, resistance R 5 and resistance R 6.The primary coil of step-up transformer TR is connected with high-frequency circuit, discharge electrode links to each other with the secondary coil of step-up transformer TR with resistance R 5 series connection are rear, be connected to the secondary of main circuit of the welding machine striking coil behind high-voltage capacitance C3, the high-voltage capacitance C4 of the series connection node of discharge electrode and resistance R 5 through being in parallel, resistance R 6 is in parallel with resistance R 5.It is to form coupling capacitance that high-voltage capacitance C3, high-voltage capacitance C4 are in parallel.In case relay work, the high frequency voltage disruptive discharge utmost point after step-up transformer TR boosts produces high-frequency high-voltage signal, be coupled to again the secondary negative pole output of main circuit of the welding machine, namely the striking coil is secondary.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (4)
1. with the high-frequency arc ignition circuit of direct voltage output, described high-frequency arc ignition circuit is used for machine initial arc, and described high-frequency arc ignition circuit comprises high-frequency signal source, relay and high frequency booster circuit, it is characterized in that, described high-frequency arc ignition circuit also comprises voltage-multiplying circuit; High-frequency signal source is connected with the input of voltage-multiplying circuit, high frequency booster circuit respectively behind relay; The voltage-multiplying circuit output is to the secondary both positive and negative polarity output dc voltage of main circuit of the welding machine; The high frequency booster circuit produces high-frequency high-voltage signal, and high-frequency high-voltage signal is coupled to the secondary negative pole output of main circuit of the welding machine.
2. the high-frequency arc ignition circuit with direct voltage output according to claim 1, it is characterized in that, described voltage-multiplying circuit comprises diode D1, diode D2, diode D3, capacitor C 1 and capacitor C 2, diode D3, diode D2 and diode D1 connect successively, diode D3 anode is connected with the voltage-multiplying circuit input, capacitor C 1 is connected between the series connection node of voltage-multiplying circuit input, diode D3 and diode D2, and capacitor C 2 is connected between the series connection node of voltage-multiplying circuit input, diode D2 and diode D1; The series connection node of diode D2 and diode D1 is drawn an output of voltage-multiplying circuit, and the negative electrode of diode D1 is drawn another output of voltage-multiplying circuit, and diode D1 series resistance R1 output direct current multiplication of voltage voltage is to the secondary positive pole of main circuit of the welding machine.
3. the high-frequency arc ignition circuit with direct voltage output according to claim 1, it is characterized in that, described high frequency booster circuit comprises step-up transformer TR, discharge electrode, coupling capacitance and resistance R 5, R6, the primary coil series resistance R3 of step-up transformer TR is connected with high-frequency signal source, discharge electrode links to each other with the secondary coil of step-up transformer TR after connecting with resistance R 5, R6, and the series connection node of discharge electrode and resistance R 5, R6 is connected to the secondary negative pole output of main circuit of the welding machine after coupling capacitance.
4. the high-frequency arc ignition circuit with direct voltage output according to claim 3 is characterized in that, described coupling capacitance is high-voltage capacitance C3, the high-voltage capacitance C4 that is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077645 CN203245482U (en) | 2013-02-19 | 2013-02-19 | High-frequency arc starting circuit with direct-current voltage output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077645 CN203245482U (en) | 2013-02-19 | 2013-02-19 | High-frequency arc starting circuit with direct-current voltage output |
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| Publication Number | Publication Date |
|---|---|
| CN203245482U true CN203245482U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320077645 Withdrawn - After Issue CN203245482U (en) | 2013-02-19 | 2013-02-19 | High-frequency arc starting circuit with direct-current voltage output |
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| CN (1) | CN203245482U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111719A (en) * | 2013-02-19 | 2013-05-22 | 广州友田机电设备有限公司 | High frequency arc ignition circuit with direct current voltage output |
| CN105934067A (en) * | 2016-07-03 | 2016-09-07 | 衢州昀睿工业设计有限公司 | Power output circuit of high voltage power supply |
| CN108015387A (en) * | 2017-12-29 | 2018-05-11 | 上海沪工焊接集团股份有限公司 | A kind of non-contact arc ignition circuit and argon arc welding machine |
| CN108340048A (en) * | 2017-12-29 | 2018-07-31 | 上海广为焊接设备有限公司 | Contactless arc ignition circuit for argon arc welding machine |
-
2013
- 2013-02-19 CN CN 201320077645 patent/CN203245482U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111719A (en) * | 2013-02-19 | 2013-05-22 | 广州友田机电设备有限公司 | High frequency arc ignition circuit with direct current voltage output |
| CN105934067A (en) * | 2016-07-03 | 2016-09-07 | 衢州昀睿工业设计有限公司 | Power output circuit of high voltage power supply |
| CN108015387A (en) * | 2017-12-29 | 2018-05-11 | 上海沪工焊接集团股份有限公司 | A kind of non-contact arc ignition circuit and argon arc welding machine |
| CN108340048A (en) * | 2017-12-29 | 2018-07-31 | 上海广为焊接设备有限公司 | Contactless arc ignition circuit for argon arc welding machine |
| CN108340048B (en) * | 2017-12-29 | 2019-09-27 | 上海广为焊接设备有限公司 | Contactless arc ignition circuit for argon arc welding machine |
| CN108015387B (en) * | 2017-12-29 | 2024-02-20 | 上海沪工焊接集团股份有限公司 | Non-contact arc striking circuit and argon arc welding machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131023 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |