Inverter welding and cutting machine with dual-voltage system
A welding and cutting machine, dual voltage technology, applied in the direction of arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problem of reducing the scope of application of inverter welding and cutting machines, and achieve the effect of simple structure and low implementation cost
Inactive Publication Date: 2013-06-05
SHENZHEN HUAYILONG ELECTRIC
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These situations all make the scope of application of the inverter welding and cutting machine greatly reduced, which is also the drawback of the prior art
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[0023] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following describes the present invention in detail in this embodiment with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0024] See Figure 1 to Figure 4 In this embodiment, an inverter welding and cutting machine with a dual-voltage system, according to the electric power flow direction of the equipment, includes: an input switch circuit 1, a primary side rectifier filter circuit 2, an inverter circuit 3, and a tapped isolation transformer 4 , The secondary side rectifier filter circuit 5 and the main control circuit 6, the PWM pulse width modulation circuit 7; wherein, the inverter type welding and cutting machine with dual voltage system further includes: connected with the input switch circuit 1...
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The invention discloses an inverter welding and cutting machine with a dual-voltage system which comprises an input switch circuit, a primary side rectification filter circuit, an inverter circuit, an isolation transformer with a tap, a secondary side rectification filter circuit, a main control circuit, a PWM (pulse width modulation), a voltage detection and judgment circuit and a transformer switching circuit, wherein the PWM (pulse width modulation) is connected with the inverter circuit; the voltage detection and judgment circuit is connected with the input switch circuit electrically, and is used for detecting the voltage type of the input switch circuit; the transformer switching circuit is connected with the signal output end of the voltage detection and judgment circuit; and the transformer switching circuit is connected with the isolation transformer with a tap, wherein the voltage detection and judgment circuit comprises a power grid voltage state starting-up time-delay reading circuit. According to the invention, the connection and input of two kinds of voltages are realized through the voltage detection and judgment circuit and the transformer switching circuit.
Description
Technical field [0001] The invention relates to the field of electric welding equipment and cutting equipment, in particular to an inverter welding and cutting machine applied to a dual-voltage system of different grid voltages. Background technique [0002] The input voltage of the traditional inverter welding and cutting machine is generally set at one of the industrial voltage or lighting voltage, and the welding and cutting machine can only be connected to one of the voltages. For example: there are two ordinary inverter welding and cutting machines, one of the input voltage is industrial power (380V±15%), and the other is lighting power (220V±15%). One machine cannot be connected to the lighting grid with an input voltage of 220V±15%, and the second inverter welding-cutting machine cannot be connected to an industrial grid with an input voltage of 380V±15%. If the wrong grid is connected, Inverter welding and cutting machine not only can not work normally, but also easily d...
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IPC IPC(8): B23K9/10
Inventor 杨振文吴月涛
Owner SHENZHEN HUAYILONG ELECTRIC