CN104167286A - Variable-frequency power transformer - Google Patents
Variable-frequency power transformer Download PDFInfo
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- CN104167286A CN104167286A CN201310526184.0A CN201310526184A CN104167286A CN 104167286 A CN104167286 A CN 104167286A CN 201310526184 A CN201310526184 A CN 201310526184A CN 104167286 A CN104167286 A CN 104167286A
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Abstract
The embodiment of the invention discloses a variable-frequency power transformer. The transformer comprises a first magnetic core, a second magnetic core, a framework and a ground wire connected with the first magnetic core, wherein coils are wound on the first magnetic core and the second magnetic core respectively, and the framework comprises a primary winding framework body and a secondary winding framework body; the coils are wound on a middle column and an edge column of the first magnetic core and on a middle column and an edge column of the second magnetic core through the primary winding framework body and the secondary winding framework body respectively; the wire winding part of the secondary winding framework body is provided with grooves used for winding wires; the number of the grooves is at least two; the number of the grooves is five. The width of each groove is 5 mm. Partition plates used for increasing insulating strength between a primary winding and a secondary winding as well as between the first magnetic core and the second magnetic core are arranged between the primary winding framework body and the secondary winding framework body. Due to the adoption of the variable-frequency power transformer, the number of winding layers is reduced, the length of a vanished wire is reduced by half, temperature rise of the coils can be effectively controlled, reliability is increased, the amount of consumed materials is reduced, and therefore cost is saved.
Description
Technical field
The present invention relates to a kind of transformer, relate in particular to a kind of variable frequency power supply transformer.
Background technology
Current micro-wave oven transformer is on the market mainly that employing UYF type Magnetic Core Design, this transformer working principle are mainly to utilize the center pillar of magnetic core to do energy conversion, and its fundamental diagram as shown in Figure 1.Comprise skeleton 1, the first magnetic core 2, the second magnetic core 3, catch 4, ground wire 5, lead-in wire 6 and groove 7 in structure, as shown in Figures 2 and 3, this structure exist following shortcoming (combination:
(1) insulation between the winding on magnetic core 2,3 and skeleton 1 utilizes the insulation of plastics square card lid, and between winding and magnetic core, easily sparking, causes defective insulation;
(2) magnetic core 2,3 ground connection are utilized longer copper cash 5 ground connection; Cause the waste of material;
(3) winding forms with multi cord coiling, and the coiling number of plies is more, causes winding level heat serious;
(4) what skeleton 1 adopted is plastic material, easily fractures;
(5) volume is relatively large;
(6) adopt monolateral coiling, primary and secondary winding entirely on center pillar;
(7) skeleton 1 is integrated, between winding, can not dismantle;
(8) power factor (PF) (PF) is worth generally between 0.96 to 0.97;
(9) winding temperature rise is higher, and full-load run temperature is 110 DEG C of left and right.
Summary of the invention
Technical problem to be solved by this invention is, a kind of variable frequency power supply transformer is provided, and the coiling number of plies reduces, and enamelled wire length reduces half, and effectively control line bag heats up, and has increased reliability, and has reduced the consumption of material, thereby also just provided cost savings.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of variable frequency power supply transformer, comprise the first magnetic core and the second magnetic core, skeleton and the ground wire being connected with described the first magnetic core that are all wound with coil, described skeleton comprises armature winding skeleton and secondary winding skeleton; Described coil by described armature winding skeleton and secondary winding skeleton respectively on the center pillar and side column of described the first magnetic core and the second magnetic core; The winding portion of described secondary winding skeleton is provided with the groove for winding the line; Described groove is at least two.
For the improvement of technique scheme, described groove is five.
For the further improvement of technique scheme, the width of described groove is 5mm.
For the further improvement of technique scheme, between described armature winding skeleton and secondary winding skeleton, be provided with the dividing plate for increasing dielectric strength between primary and secondary winding and the first magnetic core and the second magnetic core.
For the further improvement of technique scheme, the bottom of described the second magnetic core is provided with bottom.
For the further improvement of technique scheme, described ground wire is ground connection Copper Foil.
Implement the embodiment of the present invention, there is following beneficial effect:
Secondary winding skeleton in variable frequency power supply transformer of the present invention adopts a point groove design, and this design can effectively prevent secondary coil turn-to-turn short circuit.Skeleton is divided into two parts simultaneously, be armature winding skeleton and secondary winding skeleton, be convenient to partition, also make armature winding skeleton fabric width wider, when around the same number of turns, compare with traditional transformer, the coiling number of plies can reduce half, knee envelope curve length reduces half, effectively control line bag temperature rise, increases transformer reliability, reduces material usage and cost.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is the fundamental diagram of existing transformer in background technology of the present invention;
Fig. 2 is the perspective view of existing transformer in background technology of the present invention;
Fig. 3 is the explosive view of existing transformer in background technology of the present invention;
Fig. 4 is the fundamental diagram of a kind of variable frequency power supply transformer of providing of the embodiment of the present invention;
Fig. 5 is the front view of a kind of variable frequency power supply transformer of providing of the embodiment of the present invention;
The upward view of a kind of variable frequency power supply transformer that Fig. 6 provides for the embodiment of the present invention;
The explosive view of a kind of variable frequency power supply transformer that Fig. 7 provides for the embodiment of the present invention.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment:
As shown in Figure 4, Figure 5, Figure 6 and Figure 7, variable frequency power supply transformer of the present invention, comprises the first magnetic core 1, the second magnetic core 2, skeleton 3 and ground wire 4; Described the first magnetic core 1 and the second magnetic core 1 are all wound with coil, described skeleton 3 comprises armature winding skeleton 5 and secondary winding skeleton 6, the two in use can break, be convenient to install, and described coil by described armature winding skeleton 5 and secondary winding skeleton 6 respectively on the center pillar and side column of described the first magnetic core 1 and the second magnetic core 2; The winding portion of described secondary winding skeleton 6 is provided with the groove 7 for winding the line simultaneously, and it is at least two, and groove 7 can, by coiling layering, effectively prevent secondary coil turn-to-turn short circuit.Coil is respectively on armature winding skeleton 5 and secondary winding skeleton 6 simultaneously, make the winding portion of armature winding skeleton wider, at the coil around the same number of turns, compare than traditional transformer, its coiling number of plies can reduce half, and enamelled wire length also reduces half simultaneously, and the design of point groove makes the coiling of every layer can be not too many, thereby effectively control the temperature rise of line bag, increased the reliability of transformer, reduced consumption and the cost of material.Described groove 7 is to adopt five designs the most suitable, and the width of each groove 7 is 5mm.
For the improvement of technique scheme, between described armature winding skeleton 5 and secondary winding skeleton 6, be provided with dividing plate 8, described dividing plate is for increasing the dielectric strength between primary and secondary winding and the first magnetic core 1 and the second magnetic core 2.
For the further improvement of technique scheme, the bottom of described the second magnetic core 2 is provided with bottom 9, and described bottom 9 can effectively increase the dielectric strength between the second magnetic core 2 bottoms and winding and outlet terminal.
For the further improvement of technique scheme, described ground wire 4 is ground connection Copper Foil.This design is to utilize Copper Foil the first magnetic core 1 to be received to the screw hole position of armature winding skeleton 5, in the time that external pcb board assembles with variable frequency power supply transformer of the present invention, is connected by screw and Copper Foil, forms ground connection.Variable frequency power supply transformer can be effectively fixed in this design, and cost is lower, more reliable.
Variable frequency power supply transformer of the present invention is combined transformer, effectively utilize the side column (primary and secondary winding is respectively at center pillar and the side column of the first magnetic core 1 and the second magnetic core 2) of the first magnetic core 1 and the second magnetic core 2, effectively dielectric strength is brought up to withstand voltage 10KV, and do not needed embedding and soak varnish.Simultaneously effectively reduced iron loss and copper loss, and PF value can reach 0.99 or more than, make product more energy-conservation, the harmonic pollution of minimizing product to electrical network.Divide groove design to make the coiling number of plies of skeleton 3 reduce over half, copper loss reduces a lot, temperature can reduce to 90 degree left and right by 110 original degree, also just extend useful life, the minimizing of layer capacitance makes variable frequency power supply transformer parasitic parameter, and on properties of product, impact reduces, and makes the serviceability in microwave oven Switching Power Supply higher.
The technical scheme above embodiment of the present invention being provided is described in detail, applied principle and the execution mode of specific case to the embodiment of the present invention herein and set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, in embodiment and range of application, all will change, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. a variable frequency power supply transformer, comprises the first magnetic core (1) and the second magnetic core (2), skeleton (3) and the ground wire (4) being connected with described the first magnetic core (1) that are all wound with coil, it is characterized in that:
Described skeleton (3) comprises armature winding skeleton (5) and secondary winding skeleton (6);
Described coil by described armature winding skeleton (5) and secondary winding skeleton (6) respectively on the center pillar and side column of described the first magnetic core (1) and the second magnetic core (2);
The winding portion of described secondary winding skeleton (6) is provided with the groove (7) for winding the line;
Described groove (7) is at least two.
2. variable frequency power supply transformer according to claim 1, is characterized in that:
Described groove (7) is five.
3. variable frequency power supply transformer according to claim 2, is characterized in that:
The width of described groove (7) is 5mm.
4. variable frequency power supply transformer according to claim 1, is characterized in that:
Between described armature winding skeleton (5) and secondary winding skeleton (6), be provided with the dividing plate (8) for increasing dielectric strength between primary and secondary winding and the first magnetic core (1) and the second magnetic core (2).
5. variable frequency power supply transformer according to claim 1, is characterized in that:
The bottom of described the second magnetic core (2) is provided with bottom (9).
6. variable frequency power supply transformer according to claim 1, is characterized in that:
Described ground wire (4) is ground connection Copper Foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526184.0A CN104167286A (en) | 2013-10-30 | 2013-10-30 | Variable-frequency power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526184.0A CN104167286A (en) | 2013-10-30 | 2013-10-30 | Variable-frequency power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104167286A true CN104167286A (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310526184.0A Pending CN104167286A (en) | 2013-10-30 | 2013-10-30 | Variable-frequency power transformer |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390254A (en) * | 2015-11-11 | 2016-03-09 | 铜陵瑞博电子科技有限公司 | Improved transformer |
| CN105405611A (en) * | 2015-11-11 | 2016-03-16 | 铜陵瑞博电子科技有限公司 | Novel transformer |
| CN107221418A (en) * | 2015-03-04 | 2017-09-29 | 江苏理工学院 | Switch transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598112Y (en) * | 2002-08-28 | 2004-01-07 | 许登贤 | Transformer for starting lamp tube |
| CN101051560A (en) * | 2007-02-07 | 2007-10-10 | 无锡海德电子有限公司 | High frequency high voltage step-up transformer |
| CN202258727U (en) * | 2011-10-19 | 2012-05-30 | 台龙电子股份有限公司 | Transformer structure |
| CN202616001U (en) * | 2012-05-21 | 2012-12-19 | 深圳麦格米特电气股份有限公司 | Transformer structure for variable-frequency power supply of microwave oven |
| CN203085323U (en) * | 2013-02-04 | 2013-07-24 | 佛山市顺德区尚研电子科技有限公司 | Transformer |
| CN203552915U (en) * | 2013-10-30 | 2014-04-16 | 佛山市顺德区尚研电子科技有限公司 | Variable-frequency power source transformer |
-
2013
- 2013-10-30 CN CN201310526184.0A patent/CN104167286A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598112Y (en) * | 2002-08-28 | 2004-01-07 | 许登贤 | Transformer for starting lamp tube |
| CN101051560A (en) * | 2007-02-07 | 2007-10-10 | 无锡海德电子有限公司 | High frequency high voltage step-up transformer |
| CN202258727U (en) * | 2011-10-19 | 2012-05-30 | 台龙电子股份有限公司 | Transformer structure |
| CN202616001U (en) * | 2012-05-21 | 2012-12-19 | 深圳麦格米特电气股份有限公司 | Transformer structure for variable-frequency power supply of microwave oven |
| CN203085323U (en) * | 2013-02-04 | 2013-07-24 | 佛山市顺德区尚研电子科技有限公司 | Transformer |
| CN203552915U (en) * | 2013-10-30 | 2014-04-16 | 佛山市顺德区尚研电子科技有限公司 | Variable-frequency power source transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221418A (en) * | 2015-03-04 | 2017-09-29 | 江苏理工学院 | Switch transformer |
| CN105390254A (en) * | 2015-11-11 | 2016-03-09 | 铜陵瑞博电子科技有限公司 | Improved transformer |
| CN105405611A (en) * | 2015-11-11 | 2016-03-16 | 铜陵瑞博电子科技有限公司 | Novel transformer |
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Application publication date: 20141126 |