CN203522566U

CN203522566U - Input-voltage self-adaptive control manual arc welder

Info

Publication number: CN203522566U
Application number: CN201320646634.5U
Authority: CN
Inventors: 陈振刚; 陈良; 莫文雄; 祁剑
Original assignee: SHANGHAI TAYOR ELECTRIC WELDING MACHINE CO Ltd; SHANGHAI TAYOR HEAVY INDUSTRY (GROUP) Co Ltd
Current assignee: SHANGHAI TAYOR ELECTRIC WELDING MACHINE CO Ltd; SHANGHAI TAYOR HEAVY INDUSTRY (GROUP) Co Ltd
Priority date: 2013-10-18
Filing date: 2013-10-18
Publication date: 2014-04-02
Anticipated expiration: 2023-10-18

Abstract

The utility model discloses an input-voltage self-adaptive control manual arc welder, and the welder comprises a bridge-type rectifier circuit, an inverter circuit, an input circuit, and an output circuit. The input circuit is connected with an input cable, and is sequentially connected with the output circuit through the bridge-type rectifier circuit and the inverter circuit. The welder also comprises a control circuit. The control circuit comprises a voltage recognizer and a relay. The voltage recognizer is connected with the first and second current output ends of the bridge-type rectifier circuit, and the relay coil is connected with the voltage recognizer. Once a monitoring input cable of the voltage recognizer is connected to the AC 220V, the relay coil is energized, thereby enabling the normally-opened contact of the relay to be closed and forming a voltage-doubling rectifying circuit. An input voltage is recognized through an internal electronic circuit to be the AC 220V or the AC 380V, thereby switching to a corresponding working state. The welder provided by the utility model is not only reliable and convenient, but also safe and practical.

Description

The hand arc welding machine that a kind of input voltage adapting is controlled

Technical field

The utility model relates to hand arc welding machine, is specifically related to the hand arc welding machine that a kind of input voltage adapting is controlled.

Background technology

In traditional welding machine, same welding machine should be worked under AC220V voltage, can under AC380V voltage, work again.

User must change the input of welding machine or the switching over by panel could be realized, troublesome poeration, easy misoperation and welding machine is burnt out.

Utility model content

The technical problems to be solved in the utility model is to provide the hand arc welding machine that a kind of input voltage adapting is controlled, as long as connect with the mains, line just can normally be worked, this welding machine is that by inner electronic circuit, to remove to identify input voltage be AC220V, or AC380V, thereby be switched to corresponding operating state, both reliably convenient, safe and practical again.

For achieving the above object, the technical solution of the utility model is as follows:

The hand arc welding machine that input voltage adapting is controlled, comprising:

Bridge rectifier, and inverter circuit, an input circuit and an output circuit, described input circuit connects input cable, and by bridge rectifier and inverter circuit, connects output circuit successively,

Also comprise a control circuit, described control circuit comprises a voltage identification device, and a relay, and voltage identification device connects the first current output terminal and second current output terminal of described bridge rectifier, and relay coil is connected with voltage identification device.

In a preferred embodiment of the present utility model, described inverter circuit comprises the first electric capacity of a series connection, the one IGBT pipe of the second electric capacity, a series connection, the 2nd IGBT pipe and transformer, wherein the first collector electrode of an IGBT pipe is connected the first current output terminal of bridge rectifier with the first electric capacity, and the second emitter of the 2nd IGBT pipe is connected the second current output terminal of bridge rectifier with the second electric capacity.

In a preferred embodiment of the present utility model, described output circuit comprises transformer secondary output coil, the output circuit that the full-wave rectifying circuit that transformer secondary output coil consists of two diodes and an inductance have been connected to form welding machine.

By technique scheme, the beneficial effects of the utility model are:

By inner electronic circuit, removing to identify input voltage is AC220V, or AC380V, thereby is switched to corresponding operating state, both reliably convenient, safe and practical again.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is fundamental diagram of the present utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

With reference to Fig. 1, the hand arc welding machine that a kind of input voltage adapting is controlled, comprising: rectification circuit 100, one control circuit 200, one inverter circuits 300, and an input circuit 400 and output circuit 500, and peripheral circuit 600,

Wherein rectification circuit 100 is a bridge rectifier, and input circuit 400 comprises an input interface 401 and a linked switch 402, the on/off of linked switch 402 control inputs cables, and linked switch 402 connects the current input terminal 101 of bridge rectifier,

Inverter circuit 300 comprises the first electric capacity 307 of a series connection, the second electric capacity 308, the one IGBT pipe 301 of one series connection, the 2nd IGBT pipe 302 and transformer 501, wherein the first collector electrode 303 of an IGBT pipe 301 is connected the first current output terminal 102 of bridge rectifier with the first electric capacity 307, the second emitter 304 of the 2nd IGBT pipe 302 is connected the second current output terminal 103 of bridge rectifier with the second electric capacity 308, transformer primary coil 501 manages 301 with an IGBT respectively, tie point and first electric capacity 307 of the 2nd IGBT pipe 302, the tie point of the second electric capacity 308 is connected.

Output circuit 500 is comprised of 502, two diodes 503 of transformer secondary output coil and an inductance 504;

This control circuit 200 comprises a voltage identification device 201, with a relay coil 202 and a relay normally open contact 203, voltage identification device 201 connects the first current output terminal 102 and second current output terminal 103 of above-mentioned bridge rectifier, and relay coil 202 is connected with voltage identification device 201.

Relay coil 202 and relay normally open contact 203 interlocks, once voltage identification device 201 monitoring input cable access AC220V, relay coil 202 energisings, make relay normally open contact 203 adhesives, form voltage doubling rectifing circuit, offer the direct voltage that inverter circuit is close with 380V state;

Once voltage identification device 201 monitoring input cable access AC380V, relay normally open contact 203 disconnects, and by rectifier bridge BW, forms bridge rectifier, and the voltage of stable output offers inverter circuit, makes the voltage of welding machine stable output;

Peripheral circuit 600 is connected between bridge rectifier and the circuit of inverter circuit 300 formations, and connect input circuit 400 by a relay normally open contact 203, wherein peripheral circuit 600 comprises the first electrochemical capacitor 601 and second electrochemical capacitor 602, one first electric capacity 603 of a series connection;

The negative pole of the first electrochemical capacitor 601 connects the positive pole of the second electrochemical capacitor 602, the negative pole of the first current output terminal 102, the second electrochemical capacitors 602 of the positive pole connection bridge rectifier of the first electrochemical capacitor 601 connects the first current output terminal 103 of bridge rectifier;

Input power access linked switch 402, by linked switch 402, control on/off, through rectification circuit 100, carry out a rectification, ripple is considered in the first electrochemical capacitor 601, the second electrochemical capacitor 602 energy storage, through the first electric capacity 603 High frequency filters, offer the stable voltage of inverter circuit 300 again.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. the hand arc welding machine that input voltage adapting is controlled, comprising:

It is characterized in that, also comprise a control circuit, described control circuit comprises a voltage identification device, and a relay, voltage identification device connects the first current output terminal and second current output terminal of described bridge rectifier, and relay coil is connected with voltage identification device.

2. the hand arc welding machine that a kind of input voltage adapting according to claim 1 is controlled, it is characterized in that: described inverter circuit comprises the first electric capacity of a series connection, the one IGBT pipe of the second electric capacity, a series connection, the 2nd IGBT pipe and transformer, wherein the first collector electrode of an IGBT pipe is connected the first current output terminal of bridge rectifier with the first electric capacity, and the second emitter of the 2nd IGBT pipe is connected the second current output terminal of bridge rectifier with the second electric capacity.

3. the hand arc welding machine that a kind of input voltage adapting according to claim 1 is controlled, it is characterized in that: described output circuit comprises transformer secondary output coil the output circuit that the full-wave rectifying circuit that transformer secondary output coil consists of two diodes and an inductance have been connected to form welding machine.