CN2522212Y - AC. electric arc welder - Google Patents

Abstract

An AC arc welder includes a cylinder-shaped casing and a cover. The cylinder-shaped casing is filled with cooling oil and has a built-in transformer, and an iron core, an interwinding and a whole body are insulated by insulation paper and epoxy. A cooling water sleeve can be arranged outside the casing or the whole machine can be placed in a cooling water tank. The transformer is equipped with a twisted trigger oscillation circuit, which includes a capacitor and a diode in parallel. A parallel end is connected with a primary coil and the other end is connected with the output end of a secondary coil. The utility model has a compact structure, a small volume, a light weight, an easy and convenient movement and carriage, a multilayered insulation, an omni-sealed water-proof and moisture-proof property, a good insulation and safety performance, a low loss, a uniform cooling, a rapid heat exchange, a long service life of the whole welder, a zero no-load current, a high power factor and efficiency, no noise, no magnetic field out releasing, no interference on other electric appliance during usage, an normal arcing with low voltage and easy operation.

Description

A kind of ac arc welder

Technical field

The utility model relates to a kind of ac arc welder, is meant a kind of ac arc welder of double retaining cold-peace oil cooling especially.

Background technology

Ac arc welder has very long history, and its manufacturing technology becomes better and approaching perfection day by day, but owing to fail to break through the restriction of its intrinsic operation principle, makes still to have many deficiencies so far: volume is big, Heavy Weight, move and carry inconvenience; Loss is big, caloric value is big, fragile apparatus insulated, welding machine service life is shortened; Owing to adopt natural heat dissipation, thereby easily electric leakage, easily short circuit, make complete machine non-moistureproof, be afraid of to get wet, poor safety performance; No-load current is big, power factor is low, power consumption is big, noise is big, efficient is low, with high-intensity magnetic field; Low-voltage starting the arc difficulty, the operation easier height; During welding machine work other electrical equipment such as TV, fluorescent lamp etc. there is interference.In view of this, Chinese patent ZL89217812 number " light-duty high energy electric welding machine " discloses a kind of electric welding machine of mainly being made up of iron core, coil, fuel tank, cold oil, regulating current device, support and cover plate, though this type with compare volume, weight and cost with constant power tradition welding machine and reduce significantly, but for light-duty portable electric welding machine, still dislike volume big, carry inconvenience, because oil viscosity height, mobile poor, specific heat is not high, make the cooling capacity deficiency, and iron core and coil directly immerse in the cold oil, are difficult to guarantee insulating requirements.Chinese patent ZL91220806 number " the portable electric welding machine of water-cooled " discloses and a kind of step-down transformer has been fixed on the cooling water tank inner bottom plating, insulate with epoxy resin and insulating paper with the surface of iron core, winding between winding, directly be immersed in the water, because the high specific heat and the flowability of water further improve cooling capacity, volume and weight further reduces, but it is well-known, the conductive capability of water is strong, directly with water cooling the electric leakage probability is heightened, thereby is difficult to apply.

Summary of the invention

The purpose of this utility model provides a kind of arc welder that combines, makes the raising of welding machine complete machine performance, volume further to reduce with external refrigeration the inside cooling.

Designed a kind of ac arc welder according to above-mentioned purpose, comprise the cover that the casing that is similar to cylinder body and inwall are equipped with control circuit, be filled with cold oil in the casing, chassis backplane is provided with the transformer that is immersed in the cold oil, adopt insulating paper to add epoxy resins insulation between transformer core and winding that twines on it and winding, its casing adds cooling jacket outward, or the welding machine complete machine places bosh; Be provided with button at the transformer output and close the triggering oscillating circuit.Post insulating paper or insulation board is housed in described casing inboard; Simultaneously, button closes the triggering oscillating circuit and comprises electric capacity parallel with one another and diode, and the end after the parallel connection is connected with primary coil, and the other end is connected with the output of secondary coil.

The utility model compact conformation, multilayer insulation, hermetically sealed waterproof, join with high-strength stainless outer steel shell or water jacket, by inside and outside interactive cooling the complete machine various aspects of performance is increased substantially, be mainly reflected in: volume is little, in light weight, move carry easy and convenient; Loss is low, and cooling is even, heat exchange is rapid, and machine life is long; Hermetically sealed waterproof, protection against the tide, good insulation preformance, security performance height; No-load current is zero, power factor and efficient height, and power consumption is low, noiseless, no magnetic field leak, and is noiseless to other electrical equipment during use; The also normally starting the arc under the low-voltage, processing ease.Because of adopting button to close circuit generation vibration, trigger the secondary work electric current, reach the high vibration of high electric current, guaranteed the smooth and output voltage stabilization of the starting the arc.Because transless loss, no vortex flow, rated duty cycle almost reaches 100%, so no-load current is zero.

Description of drawings

Accompanying drawing 1 is the utility model electrical schematic diagram; Accompanying drawing 2 is cross section cross-sectional schematic of the utility model assembling back transformer portion.

Specific embodiments

With reference to accompanying drawing.The utility model is based on cylinder shape casing 8, be stamped the cover that inwall is equipped with control circuit on it, be filled with cold oil 12 in the casing, transformer is immersed in the cold oil, reach the whole insulating paper that adopts between 10 of iron core 11 and windings, the winding and add epoxy resins insulation 13, casing can install cooling jacket additional outward or complete machine places bosh, and casing inner wall adds insulating paper or insulation board 9.Be provided with two buttons and close the triggering oscillating circuit on transformer, this circuit comprises electric capacity parallel with one another 4,6 and diode 5,7, and the end after the parallel connection is connected with primary coil, and the other end is connected with the output 2,3 of secondary coil; The primary coil of transformer is connected with power supply 1.Following table is that the utility model compares with existing commercially available prod key data.

Project		Unit	Commercially available welding machine technical data	The utility model welding machine technical data
					Output	Rated operational voltage	Volt	25～30	36-58
Rated duty cycle	％	60	99
				Rated welding current		Peace	120	120
Floating voltage	Volt	65-75	36-58
				The electric current adjustable range		Peace	50-160	80-200
Input	Rated voltage	Volt	220±％10						170-250
				Rated current	Peace	37	30
	No-load current	Peace						8	0
				Frequency	Hz	50	50
	Efficient		％					81	90
Power factor					0.55	0.9
		Weight					Kilogram	25	9
Volume				Centimetre	26×24×24	16×11×17

Claims (3)

1, a kind of ac arc welder, comprise the cover that the casing (8) that is similar to cylinder body and inwall are equipped with control circuit, be filled with cold oil (12) in the casing, chassis backplane is provided with the transformer that is immersed in the cold oil, adopt insulating paper to add epoxy resins insulation between transformer core (11) and winding (10) that twines on it and winding, it is characterized in that

Casing adds cooling jacket outward, or the welding machine complete machine places bosh;

Be provided with button at the transformer output and close the triggering oscillating circuit.

2, arc welder according to claim 1 is characterized in that posting insulating paper or insulation board being housed in described casing inboard.

3, arc welder according to claim 1 is characterized in that described button closes the triggering oscillating circuit and comprises electric capacity parallel with one another (4,6) and diode (5,7), and the end after the parallel connection is connected with primary coil, and the other end is connected with the output of secondary coil.

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