CN214505210U

CN214505210U - Universal transformer

Info

Publication number: CN214505210U
Application number: CN202120101667.6U
Authority: CN
Inventors: 王磊; 李守大; 宋康星
Original assignee: Qingdao Aucma Vaccine Cold Chain Co ltd
Current assignee: Qingdao Aucma Vaccine Cold Chain Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-10-26
Anticipated expiration: 2031-01-15

Abstract

The utility model provides a universal transformer, which comprises an iron core, a primary winding and a secondary winding; the iron core is sleeved with a primary winding and a secondary winding through a wire frame; primary-to-secondary insulation and blocking are arranged between the primary winding and the secondary winding; the primary winding and the secondary winding are provided with leads, and lead insulating layers are wrapped outside the leads; a baffle wall insulation is arranged between the secondary winding and the lead; the iron core is fixed through a screw assembly; the outermost layer is also provided with coil external insulation; connecting other four leads of the primary winding with the (o) WHT lead respectively to form four combinations, namely (a) - (o), (b) - (o), (c) - (o) and (d) - (o); and (3) connecting the other three leads of the secondary winding with (O) WHT leads respectively to form three combinations, namely (X) - (O), (Y) - (O) and (Z) - (O). The input voltage can be changed at will in a wide range of 70V-298V, the range is wider than that of a common switching power supply, the output voltage is 196V-253V in a constant value, and the popularization is strong.

Description

Universal transformer

Technical Field

The utility model belongs to the transformer field, in particular to general purpose transformer.

Background

At present, power transformers with independent windings are adopted in the market, and no new design concept of winding voltage overlapping exists in design. At present, products with wide voltage range are not produced and are common voltage energy conversion products, the voltage range of a common switching power supply is 180V-254V, and the precedent of a low-frequency power supply transformer is not produced.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a general purpose transformer adopts the new design thinking that winding voltage overlaps, solves the inconsistent condition of domestic and foreign voltage, and the global adaptability of effectual improvement customer's product has longe-lived, and stability is high, and voltage coverage is wide, the practicality that can adjust wantonly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a universal transformer comprises an iron core, a primary winding and a secondary winding; the iron core is sleeved with a primary winding and a secondary winding through a wire frame; primary-to-secondary insulation and blocking are arranged between the primary winding and the secondary winding; the primary winding and the secondary winding are provided with leads, and lead insulating layers are wrapped outside the leads; a baffle wall insulation is arranged between the secondary winding and the lead; the iron core is fixed through a screw assembly; the outermost layer is also provided with coil external insulation;

the lead wire of the primary winding comprises (a) RED, (b) BRN, (c) ORG, (d) BLK, (o) WHT lead wire built-in self-resetting thermal fuse; the leads of the secondary winding include (X) BRN, (Y) BLU, (Z) VIO, (0) WHT;

connecting other four leads of the primary winding with the (o) WHT lead respectively to form four combinations, namely (a) - (o), (b) - (o), (c) - (o) and (d) - (o); and (3) connecting the other three leads of the secondary winding with (O) WHT leads respectively to form three combinations, namely (X) - (O), (Y) - (O) and (Z) - (O).

Preferably, the iron core is made of EI silicon steel sheet material, and the thickness is 0.5 mm.

Preferably, the input voltage generated by the four combinations of the primary winding varies freely at a wide voltage range of 70V-298V, and the output voltage generated by the three combinations of the secondary winding is a constant value of 196V-253V.

The utility model discloses the beneficial technological effect who brings:

EI silicon steel sheet material is adopted, the power supply is manufactured at low frequency, the service life of the power supply is 10 times of that of a switching power supply of the same product, the power supply has safe, reliable and stable performance, and can play a decisive role in energy conservation and consumption reduction in China; the input voltage can be changed at will within the range of 70V-298V, can cover the global voltage, has a wider range than that of a common switching power supply, and has strong popularization; the temperature rise is lower than that of a switching power supply with the same power and can be as low as 30 percent.

Drawings

FIG. 1 is a cross-sectional view of a universal transformer structure;

FIG. 2 is a schematic diagram of a universal transformer;

wherein, 1-a wire frame; 2-iron core; 3-a primary winding; 4-a secondary winding; 5-primary to secondary insulation; 6-wall insulation; 7-a lead insulation layer; 8-coil external insulation; 9-a lead; 10-a screw assembly; 11-partition; 12-self-resetting thermal fuse.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1, the main components of a universal transformer include a bobbin 1, an iron core 2, a primary winding 3, and a secondary winding 4; the iron core 2 is sleeved with a primary winding 3 and a secondary winding 4 through a wire frame 1; primary-to-secondary insulation 5 and a block 11 are arranged between the primary winding 3 and the secondary winding 4; the primary winding 3 and the secondary winding 4 are provided with leads 9, and lead insulating layers 7 are wrapped outside the leads 9; a wall insulation 6 is arranged between the secondary winding 4 and the lead 9; the iron core 2 is made of EI silicon steel sheet material, the thickness is 0.5mm, and the iron core is fixed by a screw component 10; the outermost layer is also provided with coil outer insulation 8.

As shown in fig. 2, the lead wire of the primary winding 3 includes (a) RED, (b) BRN, (c) ORG, (d) BLK, (o) WHT, (o) self-resetting thermal fuse 12 built in the WHT lead wire; the lead of the secondary winding 4 includes (X) BRN, (Y) BLU, (Z) VIO, (O) WHT.

When the voltage-variable input circuit is used, the input end can form four input combinations which are respectively (a) - (o), (b) - (o), (c) - (o) and (d) - (o) by connecting different leads, and the four combinations can enable the input voltage to be randomly changed within the wide voltage range of 70V-298V; the output end can form three output combinations which are respectively (X) - (O), (Y) - (O) and (Z) - (O) by connecting different leads, the output voltage is a constant value of 196V-253V no matter which combination, and the specific input and output combination and the corresponding input and output voltage values are shown in the table 1.

TABLE 1 combination of inputs and outputs and their corresponding input and output voltage values

The universal transformer adopts a new design idea of winding voltage overlapping, mainly solves the situation of inconsistent voltage at home and abroad, and effectively improves the global adaptability of client products; the silicon steel sheet mode and the low-frequency manufacturing method are adopted, so that the silicon steel sheet has the advantages of long service life, high stability, wide voltage coverage range and practicability of arbitrary adjustment. The product power can be customized according to the customer requirements so as to meet the universality of the product.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. A universal transformer is characterized by comprising an iron core, a primary winding and a secondary winding; the iron core is sleeved with a primary winding and a secondary winding through a wire frame; primary-to-secondary insulation and blocking are arranged between the primary winding and the secondary winding; the primary winding and the secondary winding are provided with leads, and lead insulating layers are wrapped outside the leads; a baffle wall insulation is arranged between the secondary winding and the lead; the iron core is fixed through a screw assembly; the outermost layer is also provided with coil external insulation;

the lead wire of the primary winding comprises (a) RED, (b) BRN, (c) ORG, (d) BLK, (o) WHT lead wire built-in self-resetting thermal fuse; the leads of the secondary winding include (X) BRN, (Y) BLU, (Z) VIO, (O) WHT;

connecting other four leads of the primary winding with the (o) WHT lead respectively to form four combinations, namely (a) - (o), (b) - (o), (c) - (o) and (d) - (o); and (3) connecting the other three leads of the secondary winding with the (0) WHT lead respectively to form three combinations, namely (X) - (O), (Y) - (O) and (Z) - (O).

2. The universal transformer according to claim 1, wherein said core is made of EI silicon steel sheet material and has a thickness of 0.5 mm.

3. The universal transformer according to claim 1, wherein the input voltage generated by the four combinations of the primary windings varies freely between 70V and 298V, and the output voltage generated by the three combinations of the secondary windings is constant between 196V and 253V.