CN85202748U - Automatic cutting-off manul electric arc welder with radiator - Google Patents

Abstract

The utility model discloses an automatic cutting-off manual electric arc welder with radiator which can be used continuously. The utility model improves the existing hand arc welding machine with iron core and windings as follows: the sectional area and size of the legs of the iron core are dwindled; the yoke of the iron core is shortened; The primary coil of the main iron core is winded with multi-strand thin conductor wires in parallel connection and vertical type closely without interlayer air ducts; the number of the turns of the electromagnetic attraction coils of the no-load automatic shut-off device is reduced, the sectional area of the conductor wire is enlarged correspondingly; an incandescence tungsten lamp is connected in series with the circuit of electromagnetic attraction coil, then assembled with the modified welder; a radiator which is also the casing of the welder is arranged on the external of the welder for continuous use. The utility model has the advantages of material saving and energy saving.

Description

Heat dissipation type, auto-cutout manual arc welding machine

The utility model is the manual arc welding machine that can use continuously about power supply weldering usefulness.

The manual arc welding machine that uses reduces iron loss with lower magnetic flux density at present, brings core volume big thus, and the consumption of electrical sheet is many during manufacturing.Simultaneously, the copper material consumption on iron core also increases, and when welding machine during in welding operation, the power consumption that is brought by copper loss has also increased.According to actual measurement, the no-load running time of manual arc welding machine surpasses the practical operation time, almost accounts for more than 60% of whole service time, the inaction of iron loss electric power waste when causing zero load, in order to eliminate this waste, people have manufactured and designed the unloaded auto-cutout device of welding machine.At present, the national accreditation of technical indicator of unloaded auto-cutout device itself, but because China's grid supply quality is also relatively poor, 105～85% the scope that the height of practical power voltage changes all that electromagnetic attraction coil above A.C. contactor in the unloaded auto-cutout device allowed, when particularly voltage is low a little less than the magnetic force of (being lower than 85%) sucking coil, can not make the closing of contact of A.C. contactor, cause welding machine to can not get power supply and can't work, and sucking coil also can burn, and when voltage is higher than 105%, the current in wire overload also will be burnt coil in the sucking coil, causes electric welding work normally not carry out.In addition, unloaded automation road device separates installation with welding machine, when electric welding machine is moved, unloaded auto-cutout device has become added burden on the contrary, owing to these reasons, the user often leaves unloaded auto-cutout device, electric welding machine is directly connected with the mains carry out welding operation, so, unloaded iron loss power consumption problem is not properly settled yet.

One of task of the present utility model is to improve unloaded auto-cutout device, makes it be adapted to the supply voltage of rated voltage height 120～50%.Two of task of the present utility model is that unloaded auto-cutout device and welder transformer after improving are integrally combined, eliminate unloaded iron loss electrical phenomena, and welder transformer is designed and manufactured into the new welder of not only saving the consumption of electrical sheet and copper material but also reducing the waste of electric energy simultaneously.Three of task of the present utility model is will solve above-mentioned welder transformer to cause area of dissipation to dwindle by volume-diminished and the temperature rise that brings.

One of task of the present utility model is achieved in that the number of turn with the electromagnetic attraction coil of A.C. contactor in the unloaded auto-cutout device is reduced to $\frac{1}{\sqrt{3}}$ , and the sucking coil sectional area of wire is increased to $\sqrt{3}$ Times, and voltage of series connection is the welding machine rated voltage in the sucking coil circuit after the transformation of the way $\frac{1}{\sqrt{3}}$ , power is 8-15 watt incandescent osram lamp, and at capacitor of electromagnetic attraction coil two ends parallel connection.After taking abovementioned technology, because the cold and hot resistance of incandescent osram lamp differs and reaches twenty times, switching on moment, incandescent tungsten filament is in cold conditions, its resistance is very little, and supply voltage almost all puts on sucking coil, even power supply has only 50% rated voltage, contactor is adhesive rapidly also, makes electric welding machine carry out welding operation.When supply voltage high to rated voltage 120% the time, wherein 61～62% voltages put on incandescent osram lamp, the voltage that sucking coil is got is 58～59%, it equals this coil and is reduced to $\frac{1}{\sqrt{3}}$ 105% of the rated voltage of the number of turn is not so the long-term work sucking coil can burn yet.

Two of task of the present utility model is achieved in that the unloaded auto-cutout device that will improve and the welder transformer (see figure 1) that integrally combines.The magnetic flux density that improves main iron core in the welder transformer to reduce the volume of iron core, is saved the consumption of electrical sheet to threshold limit value (is 17000～18000 Gausses as B * 1-135 type).The iron core column of twining copper cash is taked the short multistage circular iron core post of perimeter of section, make the winding shape become circle, thereby reach the purpose that the lead girth shortens by rectangle.Ventilating duct between primary winding cancellation original layer, change into the multiply thin wire in parallel vertical close around, further reduce the consumption of copper conductor.Since the minimizing of copper consumption, and current density remains unchanged, so the copper loss electric weight of welding machine when work just reduced.Aspect the iron loss power consumption, though because the iron core magnetic flux density improves, bring the iron loss electric weight to increase, but corrected unloaded auto-cutout device, overcome the iron loss power consumption when unloaded reliably, made the iron loss of the utility model when operation measure little than total iron loss of existing welding machine (when unloaded iron loss and when operating iron loss).

Three of task of the present utility model is achieved in that radiator makes the fin shape with certain mechanical strength by silico-aluminum or other good thermal conductivity material.Wherein, the fin casting that silico-aluminum is made forms, and fin surface scribbles one deck black epoxy electrophoretic paint.This radiator and welding machine transformation keep good thermo-contact, become the shell (see figure 1) of whole manual arc welding machine.

The utility model has the advantages that: both can save the raw material of this class preciousness of electrical sheet and copper, can reduce power consumption again, its low cost of manufacture, little, in light weight, the stable performance of volume can be used continuously.

Description of drawings:

Accompanying drawing 1 is the shape assumption diagram of B of the present utility model * 1-135 type manual arc welding machine.Among the figure: 1 is iron core, 2 windings, 3 radiators, 4 A.C. contactors, 5 unloaded automatic citrcuit bearkers, 6, the welding current adjusting handle, 7 power supply input terminals, 8 outlet terminals, 9 castors, 10 handles.

Accompanying drawing 2 is the utility model electrical schematic diagram:

()/() line is an iron core,

In the line is the welder transformer part,

In the line is the A.C. contactor of unloaded auto-cutout device,

In the line is the unloaded automatic citrcuit bearker of unloaded auto-cutout device

11 are electromagnetic attraction coil, 12 capacitors, 13 incandescent osram lamps, the contact of 14 contactors among the figure.

Accompanying drawing 3 is a horizontal sectional drawing among B of the present utility model * 1-135 type manual arc welding machine iron core, and 2 windings are that circular, 15 iron core column are that multistage circle, 17 primary windings do not have the interlayer ventilating duct among the figure.

Accompanying drawing 4 is the profilograph of B of the present utility model * 1-135 type manual arc welding machine, and 16 iron core yokes shorten.

Accompanying drawing 5 is all rectangular for 2 ' winding and 15 ' iron core column among the horizontal sectional drawing figure among existing B * 1-135 type manual arc welding machine iron core, and 17 ' primary winding interlayer has ventilating duct.

Accompanying drawing 6 is the profilograph of existing B * 1-135 type manual arc welding machine, and 16 ' iron core yoke is longer.

B of the present utility model * 1-135 type manual electric arc welding machine operation uses with existing B * 1-135 type hand arc welding machine is similar, and the A.C. contactor of the unloaded auto-cutout device that this utility model is packed into adapts to the expanded range of supply voltage, makes electric welding machine eliminate unloaded power consumption, and can guarantee working properly. When rated voltage was 220 volts, the supply voltage accommodation of A.C. contactor was: 110～264 volts. In addition, this utility model has reached the purpose of material-saving economize on electricity.

Because the number of turn of the electromagnetic attraction coil 11 of A.C. contactor 4 is reduced to $\frac{1}{\sqrt{3}}$ (corresponding coil voltage is 127 volts, allows the operating voltage in 105～85% scopes to increase to for (133～108 volts) its sectional area of wire $\sqrt{3}$ Doubly, coil two ends capacitor 12 that capacity is 2 microfarads in parallel, the welding machine rated voltage of connecting again $\frac{1}{\sqrt{3}}$ (127 volts), power is 15 watts incandescent tungsten filament bulb 13. When supply voltage was low, incandescent tungsten filament bulb 13 was in cold conditions, pressure drop is atomic, and supply voltage almost all is applied on the sucking coil 11, makes contacts of contactor 14 rapid closings. And when supply voltage was high, it is hot that this white heat osram lamp 13 is in, and pressure drop is bigger, sucking coil 11 gained voltages still in allowed band, (rated voltage $\frac{1}{\sqrt{3}}$ 105%, namely 133 volts) sucking coil 11 can not occur owing to current overload burns phenomenon.

Because the iron core magnetic flux density of welder transformer improves, the reduced cross-sectional area of iron core column 15, and 16 shortenings of iron core yoke so whole main iron core volume reduces, make the existing B of the electrical sheet amount ratio of making main iron core * 1-135 type machine save 26%. Shape because of iron core column 15 reduced cross-sectional area, winding 2 becomes circle by rectangle again, and the used copper amount of winding reduces; Again because of primary winding 17 adopt the multiply thin wires in parallel vertical close around, middle no ventilating duct has reduced the copper consumption again. So the amount ratio of copper has B * 1-135 type machine now and saves 28%. Because the consumption of copper reduces, current density is constant. The copper loss electricity ratio has B * 1-135 type machine now and reduces 16～20%. When welding machine was unloaded, because the reliable use of unloaded auto-cutout device, the iron loss power consumption when having avoided unloaded also reduced total iron loss electric weight of the existing B of iron loss electricity ratio of this utility model * 1-135 type machine to some extent.

Because core volume reduces, cause area of dissipation to dwindle, so problem of temperature rise during the welding machine operation By the fin that silico-aluminum casting forms, the surface is coated with that the radiator 3 of one deck black epoxy electrophoretic paint solves. This radiator has certain mechanical strength, becomes the shell of this type welding machine.

Claims (9)

1, a kind of iron core, winding, welding current adjusting handle of comprising, power supply input terminal, outlet terminal, the manual arc welding machine of castor and handle, it is characterized in that being equipped with in the machine unloaded auto-cutout device, the volume of iron core reduces, and the girth of the lead of winding shortens and the outside is equipped with radiator.

2, manual arc welding machine as claimed in claim 1, it is characterized in that unloaded auto-cutout device comprises: unloaded automatic citrcuit bearker and A.C. contactor, the electromagnetic attraction coil turn of A.C. contactor is reduced to $\frac{1}{\sqrt{3}}$ , and the sucking coil sectional area of wire is increased to $\sqrt{3}$ Doubly.

3, manual arc welding machine as claimed in claim 2 is characterized in that series connection one incandescent osram lamp on the electromagnetic attraction coil circuit, sucking coil two ends capacitor in parallel.

4, manual arc welding machine as claimed in claim 3, the voltage that it is characterized in that incandescent osram lamp are the welding machine rated voltage $\frac{1}{\sqrt{3}}$ , power is 8～15 watts.

5, manual arc welding machine as claimed in claim 1 is characterized in that the multistage circle that iron core column takes perimeter of section to lack.

6, manual arc welding machine as claimed in claim 1 is characterized in that winding is rounded, and its primary winding is in parallel vertical close around, no interlayer ventilating duct with multiply thin wire.

7,, it is characterized in that radiator made by good thermal conductivity material, and become the shell of whole welding machine as the described manual arc welding machine of claim 1-6.

8,, it is characterized in that radiator forms fin shape, surperficial coating black epoxy electrophoretic paint by the silico-aluminum casting as the described manual arc welding machine of claim 1-6.

9, manual arc welding machine as claimed in claim 7 is characterized in that radiator forms fin shape, surperficial coating black epoxy electrophoretic paint by the silico-aluminum casting.

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