CN2116271U

CN2116271U - Easy processing and low power loss transformer

Info

Publication number: CN2116271U
Application number: CN 92214359
Authority: CN
Inventors: 陈维军; 张宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-01
Filing date: 1992-04-01
Publication date: 1992-09-16

Abstract

The utility model relates to an easily processed transformer with low power loss, comprising a primary winding, and a secondary winding. A winding made by winding an iron thin strip with an insulating coating layer is especially arranged on the utility model, and thereby, the winding and the iron core are made one. The utility model has the advantages of low iron core and winding eddy current loss, small magnetic hysteresis loss, high winding current-carrying capacity, and small temperature-rise resistor. Coupling coefficient, power factor, loading and overlapping coefficient are improved so that the manufacture of transformer tends to be simplified.

Description

Easy processing and low power loss transformer

The utility model relates to a kind of transformer.

Existing transformer is made up of iron core, primary and secondary winding and yoke usually.Primary and secondary winding is formed around iron core winding by lead, and yoke is positioned at the two ends of primary and secondary winding, and its effect is to constitute closed magnetic circuit with iron core.The principal element of the existing transformer efficiency of influence is iron core eddy current loss, winding eddy current loss, magnetic hysteresis consumption, copper loss and coupling coefficient is low and factor such as magnetic line of force skewness.Existing transformer will further reduce power loss significantly owing to be subjected to the restriction of its version, improves quite difficulty of transformer efficiency.Therefore, existing transformer exists structural defective.

The purpose of this utility model is that winding and the core structure that has transformer now improved, and a kind of novel transformer of low-power consumption is provided.

Transformer of the present utility model has elementary winding and secondary winding, and the two ends of winding are respectively arranged with yoke.In transformer of the present utility model, be provided with especially by irony thin coiled stock around the winding that forms with insulating coating.Also that is to say, the utility model Transformer Winding can be partly or entirely by the irony thin coiled stock around forming.Under this kind version, promptly constitute a kind of takeup type iron core by the irony thin coiled stock around the winding that forms itself, this Wound core is a current, but double as magnetic circuit conductor again.Therefore, for by the irony thin coiled stock around the winding that forms, just can save the iron core in the existing Transformer Winding, winding and iron core are united two into one.Adopt after the irony strip winding that this winding and iron core unite two into one, the following variation will take place in the characteristic of transformer:

When a, transformer work, the vortex flow in the iron core will be limited in the extremely long coiling belt body.Since the resistance of the resistance of coiling belt body silicon steel sheet in the existing transformer core, thus vortex flow is reduced, and iron core eddy current loss reduces.

B, because winding is rolled layer by layer by the irony strip, in air, form the just inside and outside two-layer of leakage flux.Compare with the existing winding that is around in the iron core outside, its leakage flux significantly reduces, thereby winding eddy current loss is reduced.

C, for by the irony thin coiled stock around iron core, its area of hysteresis loop is littler than the area of hysteresis loop of silicon steel sheet in the existing iron core, so can reduce magnetic hysteresis loss.

The irony strip surface area of d, winding is very big, and kelvin effect reduces, and helps improving the actual current capacity of winding.Simultaneously, the heat transfer area of irony strip is bigger, and temperature rise is reduced, the temperature rise resistance when having reduced big electric current.

E, by the irony thin coiled stock around winding go deep into core interior just as the winding one circle circle that will have transformer now, the magnetic line of force is evenly distributed in the iron core thereby make.Simultaneously, the also corresponding raising of coupling coefficient.

F, irony thin coiled stock around winding self form big electric capacity, thereby constitute the LC compensation, improved the power factor (PF) of transformer.

G, with the irony thin coiled stock around winding replace iron core after, stepped " dead angle " of having eliminated existing transformer fe core outer surface improved the folding coefficient of transformer.

Therefore, transformer of the present utility model is compared with existing transformer, fundamentally changed the structure of Transformer Winding and iron core, the characteristics that have that iron core and winding eddy current loss are low, magnetic hysteresis loss is little, the winding current capacity improve, temperature rise resistance is little, the magnetic line of force is evenly distributed in the iron core, coupling coefficient and power factor (PF), folding coefficient improve, can reduce the reactive loss of transformer greatly, improve transformer efficiency.In addition, behind irony strip replacement winding of reeling and iron core, the processing and fabricating of transformer will greatly be simplified, and can save a large amount of copper materials, thereby reduce cost of manufacture significantly.

Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.

Fig. 1 is the structural representation of transformer among the embodiment 1.

Fig. 2 is the vertical view of transformer among Fig. 1.

Fig. 3 is the A-A cutaway view of transformer among Fig. 1.

Fig. 4 is the structural representation of transformer among the embodiment 2.

Fig. 5 is the vertical view of transformer among Fig. 4.

Fig. 6 is the structural representation of transformer among the embodiment 3.

Fig. 7 is the B-B cutaway view of Fig. 6 transformer.

Embodiment 1:

As Figure 1-3, the transformer in the present embodiment has elementary winding 1, secondary winding 2, goes up yoke 3 and lower yoke 4, and elementary winding and secondary winding are reeled by the irony strip 5 with insulating coating and formed, and primary and secondary winding is set up in parallel.Last yoke 3 and lower yoke 4 are arranged at the two ends of winding respectively.In the present embodiment, for ease of insulation, between winding overhang and yoke, be provided with amorphous state magnetic conduction ambroin pad 6.Simultaneously, irony strip 5 is wound on the plastic tube 10.Primary and secondary winding, magnetic conduction insulation spacer, upper and lower the yoke all screw rod 7 by running through plastic tube 10 and nut 8, grip block 9 are fixed with method of clamping.

Also estable coiling of primary and secondary strip winding in the present embodiment, soon a winding is around in outside another winding and encloses, thereby constitutes shell type transformer.In addition, also can be set up in parallel three strip windings, thereby constitute the three-phase type transformer.

Embodiment 2:

Shown in Fig. 4,5, the transformer device structure of present embodiment is similar to embodiment 1, have by the irony thin coiled stock around primary and secondary strip winding 11,12 and upper and

lower yoke

14,15, magnetic

conduction insulation cushion

16,17, nut 18 and grip block 19.Present embodiment is as different from Example 1: in order to satisfy the needs of the big electric current of secondary winding output, especially by the irony thin coiled stock around the secondary strip winding 1 peripheral winding that forms the winding 13 of coil form, and secondary strip winding 12 and secondary coil winding 13 are connected in parallel, secondary strip winding and secondary coil winding constitute the combined type secondary winding jointly.

According to actual needs, secondary strip winding 12 and the secondary coil winding 13 in the present embodiment also can be connected in series.

Embodiment 3:

Shown in Fig. 6,7, the transformer of present embodiment has elementary strip winding 20, secondary coil winding 21, secondary winding iron core 22 and upper and

lower yoke

23,24, adjusting screw(rod) 25 and adjusting nut 26.In the present embodiment, elementary winding 20 is formed by the coiling of irony strip, and secondary winding then adopts the existing Transformer Winding form that is made of jointly iron core 22 and pitch of the laps 21.Transformer in the present embodiment can be used as the transformer that uses at special occasions such as electric welding.For guaranteeing that it has the external characteristic that output voltage falls suddenly, can increase its leakage impedance artificially.The setting of adjusting screw(rod) 25 and adjusting nut 26 promptly is the distance that is used to regulate between yoke 23 and the winding overhang, and then regulates the air gap of transformer, changes the leakage impedance of transformer.

Claims

1, easily process the low-power consumption transformer, have elementary winding and secondary winding, the two ends of winding are respectively arranged with yoke, it is characterized in that being provided with by the irony thin coiled stock with insulating coating around the winding that forms.

2, transformer as claimed in claim 1 is characterized in that being arranged with the coil type winding by the irony thin coiled stock with insulating coating around the winding periphery that forms.

3, transformer as claimed in claim 1 or 2 is characterized in that being provided with insulation magnetic conduction pad between the end of winding and yoke.