CN2646838Y

CN2646838Y - Electrical arc welder

Info

Publication number: CN2646838Y
Application number: CN 200320116847
Authority: CN
Inventors: 林友慎; 蔡作明; 唐志球
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-01
Filing date: 2003-10-01
Publication date: 2004-10-06
Anticipated expiration: 2013-10-01

Abstract

The utility model is an electric arc welder. The circuit part of the welder comprises a working major loop, a control circuit, an arc stabilizing circuit and a high voltage arc generating circuit that are mutually connected as well as a transformer with an oblong iron core that provides power supply iron core for each circuit. The transformer is made from elongated high silicon steel strap and the ratio between the long shaft and the short shaft of the oblong iron core is 1.2:1, while the section shape of iron core is the oblong with the ratio of 1.2:1 between the long shaft and the short shaft; at the same time, the ratio between the area of one section of the oblong iron core and the area of the cross section of oblong iron core along the short shaft is 1:4. The utility model applies the oblong iron core along to manufacture power transformer, thereby optimizing the structural design of the transformer, improving the winding technique, increasing the space utilization rate of transformer, relatively shortening the magnetic circuit of the iron core, reducing the magnetic resistance and strengthening the electromagnetic coupling between the primary and secondary windings. Under the same power, the volume and weight of the transformer are both reduced and the utility model has high efficiency, saves energy and lowers energy consumption and makes the welder miniaturized and convenient for carrying.

Description

A kind of arc welder

Technical field

The utility model relates to a kind of arc welder, is meant a kind of elliptical deformation depressor that is used for portable high-efficiency ac arc wedling machine or alternating current-direct current argon arc welding machine especially.

Background technology

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 useful 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 as 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.China's ZL98230916 patent " water-cooled AC and DC arc welding, argon arc welding machine " is then given and has been shown a kind of multipurpose arc welder that comprises the water-cooled power transformer.Because aforementioned each patent all adopts the conventional power source transformer, adopt rectangle iron core or annular core no matter be, owing to the reason in technique for coiling and the design, transformer is difficult to that compactness, space availability ratio are low, iron circuit is long, magnetic resistance is bigger, the volume of transformer is also big, consumption of materials greatly, heavier.

Summary of the invention

The purpose of this utility model provides a kind of power transformer that arc welder complete machine performance improves, volume further reduces that makes, and this transformer is made by oval-shaped iron core.

Designed a kind of arc welder according to above-mentioned purpose, the circuit part of this machine comprises the primary work loop that is coupled to each other, control circuit, arc static circuit, high-voltage arc strike circuit and provides the transformer of power supply to each circuit that the iron core of this transformer adopting is an oval-shaped iron core.Described oval-shaped iron core adopts rectangular form height silicon silicon steel sheet to make, and its long and short axial ratio is 1.2: 1, and the section shape of iron core also is 1.2: 1 ellipse for long and short axial ratio.Simultaneously another condition that need satisfy is that area and the oval-shaped iron core of a section of oval-shaped iron core are 1: 4 along the ratio of the area of the cross section of minor axis.

The utility model adopts oval-shaped iron core to make power transformer, optimized the structural design of transformer, improved technique for coiling, the space availability ratio of transformer is improved, shortened the magnetic circuit of iron core relatively, reduced magnetic resistance, the electromagnetic coupling of having strengthened between primary and secondary winding closes, and makes that volume, the weight of oval-shaped iron core transformer all reduce under same power, the efficient height, energy-saving and cost-reducing, thus make the welding machine miniaturization, be convenient for carrying.

Description of drawings

Accompanying drawing 1 is that the master of the utility model transformer core looks schematic diagram; Accompanying drawing 2 is that the complete section of accompanying drawing 1 is cutd open schematic top plan view; Accompanying drawing 3 is the utility model Transformer Winding schematic diagrames.

Specific embodiments

Fig. 1,2 has defined the basic configuration of iron core that the utility model adopts and the proportionate relationship between oval major and minor axis, and the long and short axial ratio that also is iron core is 1.2: 1, and the section shape of iron core also is 1.2: 1 ellipse for long and short axial ratio; Simultaneously, the area of a section of oval-shaped iron core and oval-shaped iron core are 1: 4 along the ratio of the area of the cross section of minor axis.

From Fig. 3 as seen, because the magnetic circuit of oval-shaped iron core 1 is shorter, the space that the Transformer Winding coil encircles in oval-shaped iron core after the coiling is comparatively crowded, require the technique for coiling of winding coil meticulousr, the cross section of oval-shaped iron core also helps reducing material use amount and fastening winding coil for ellipse, makes transformer sturdy and durable.Schematically provided the main coil 2 that is wound on the iron core among the figure,

secondary coil

3,4.

Claims

1, a kind of arc welder, the circuit part of this machine comprise the primary work loop that is coupled to each other, control circuit, arc static circuit, high-voltage arc strike circuit and provide the transformer of power supply to each circuit, it is characterized in that

Described transformer core is an oval-shaped iron core.

2, arc welder according to claim 1, it is characterized in that adopting the long and short axial ratio of the oval-shaped iron core that rectangular form height silicon silicon steel sheet makes is 1.2: 1, the section shape of iron core also is 1.2: 1 ellipse for long and short axial ratio.

3, arc welder according to claim 2, the area that it is characterized in that a section of described oval-shaped iron core and oval-shaped iron core are 1: 4 along the ratio of the area of the cross section of minor axis.