Novel air channel for AC (alternating current) arc welding machine

Abstract

The invention discloses a novel air channel for an AC (alternating current) arc welding machine, which is used as a flowing channel of cooling air. The novel air channel comprises a wind shield, a box cover side plate and an upper surface of a transformer static core, wherein the bottom surface of the novel air channel is the upper surface of the transformer static core of the AC arc welding machine; the wind shield is arranged at the cooling air inlet end of the novel air channel; the wind shield is made by lengthening and widening a static core splint; and a rubber strip is also arranged between the wind shield and the box cover side plate so that the wind shield and the box cover side plate are tightly installed. The invention has the beneficial effect that: the wind shield is made by lengthening and widening the static core splint so as to enable the cooling air blown from the back to fully pass through the inside of a transformer core window of the arc welding machine, thereby improving the cooling effect of the arc welding machine.

Description

technical field [0001] The invention relates to the field of welding machines, in particular to a novel air duct for AC arc welding machines. Background technique [0002] Arc welding machine, also known as arc welding transformer, is a special transformer that converts the alternating current of network voltage into low-voltage alternating current suitable for arc welding. There are three main types of arc welding machines: moving iron core type, homogeneous type and moving coil type. It has the advantages of simple structure, easy manufacture and repair, low cost and high efficiency. However, its current waveform is a sine wave, the output is an AC drop external characteristic, the arc stability is poor, and the power factor is low, but the phenomenon of magnetic deflection blowing rarely occurs, and the no-load loss is small. It is generally used in manual arc welding, submerged arc welding and welding. Tungsten argon arc welding and other methods. However, the design ...

AI Technical Summary

Problems solved by technology

However, its current waveform is a sine wave, the output is an AC drop external characteristic, the arc stability is poor, and the power factor is low, but the magnetic deflection phenomenon rarely occurs, and the no-load loss is small. It is generally used in manual arc welding, submerged arc welding and welding. Tungsten argon arc welding and other methods

However, the design of the air duct of the traditional arc welding transformer design cannot make the cooling air pass through the iron core window of the arc welding machine transformer, and the cooling effect is not ideal.

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