CN202564031U

CN202564031U - High-tension transformer of micro-wave oven

Info

Publication number: CN202564031U
Application number: CN2012202334319U
Authority: CN
Inventors: 梁伟国
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-24
Filing date: 2012-05-15
Publication date: 2012-11-28
Anticipated expiration: 2022-05-15
Also published as: CN202565498U; CN202634742U; CN202587451U; CN202565499U; CN202634743U; CN103200722A; CN202565503U; CN202565502U; CN202738163U

Abstract

The utility relates to a micro-wave oven, in particular to a high-tension transformer of a micro-wave oven. The high-tension transformer of the micro-wave oven comprises a framework, a filament winding, a primary winding, a first secondary winding and a second secondary winding, wherein at least one end of the same-phase output end of the first secondary winding and the inverted output end of the second secondary winding is connected with the framework. The high-tension transformer of the micro-wave oven is reasonable in structure, and can make use of two secondary windings of the high-tension transformer to constitute two heterogeneous half-wave voltage doubling circuits to the uttermost degree to enable the positive half-wave output power and the negative half-wave output power of the high-tension transformer to be almost the same, thereby reducing temperature rising of the high-tension transformer and improving efficiency.

Description

High voltage transformer of microwave oven

Technical field

The utility model relates to a kind of microwave oven, specifically relates to high voltage transformer of microwave oven.

Background technology

Existing microwave oven generally comprises high-tension transformer, high-voltage capacitance, high-voltage diode and magnetron; High-tension transformer comprises elementary winding, secondary winding, Filament Winding and transformer framework four parts again; Voltage about the secondary output 2000VAC of high-tension transformer; Secondary winding, high-voltage capacitance and high-voltage diode are formed the half-wave voltage-multiplying circuit and are come the work of driven magnetic keyholed back plate, because high-tension transformer has half-wave to charge to electric capacity in the course of the work, have half-wave to carry out voltage and superpose the driven magnetic keyholed back plate; Therefore the power of high-tension transformer is unequal in one-period, causes the high-tension transformer serious inefficiency of generating heat.

Summary of the invention

First purpose of the utility model is to provide a kind of new can make microwave oven power output high-tension transformer efficiently.

Above-mentioned purpose adopts following technical proposals to realize.

A kind of high voltage transformer of microwave oven comprises skeleton, Filament Winding, elementary winding, first secondary winding and second subprime winding; Have at least an end to be connected in the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding with skeleton.

Technique scheme can be done further perfect as follows.

The series connection of the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding, and series connection point as public exit, public exit is connected with skeleton.

Said elementary winding has two inputs at least.

Have at least a windings in series that the Temperature protection device is arranged in said Filament Winding, elementary winding, first secondary winding and the second subprime winding.

Second purpose of the utility model is to provide a kind of new can make microwave oven power output high-tension transformer efficiently.

Above-mentioned purpose adopts following technical proposals to realize.

A kind of high voltage transformer of microwave oven comprises skeleton, Filament Winding, elementary winding, first secondary winding and second subprime winding; Said first secondary winding, second subprime winding and transformer framework open circuit.

Technique scheme can be done further perfect as follows.

The series connection of the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding, and series connection point as public exit, public exit and skeleton are opened a way.

Said elementary winding has two inputs at least.

The utility model is reasonable in design, can utilize two secondary winding of high-tension transformer to form the half-wave voltage-multiplying circuit of two out-phase as far as possible, make high-tension transformer positive and negative half-wave power output about equally, thereby reduce the temperature rise of high-tension transformer, raise the efficiency.

Description of drawings

Fig. 1 is the micro-wave oven high-voltage part schematic diagram of the embodiment 1 of use this patent high-tension transformer.

Fig. 2 is the micro-wave oven high-voltage part schematic diagram of the embodiment 2 of use this patent high-tension transformer.

Fig. 3 is the micro-wave oven high-voltage part schematic diagram of the embodiment 3 of use this patent high-tension transformer.

Fig. 4 is the micro-wave oven high-voltage part schematic diagram of the embodiment 4 of use this patent high-tension transformer.

Fig. 5 is the micro-wave oven high-voltage part schematic diagram of the embodiment 5 of use this patent high-tension transformer.

Fig. 6 is the micro-wave oven high-voltage part schematic diagram of the embodiment 6 of use this patent high-tension transformer.

Fig. 7 is the micro-wave oven high-voltage part schematic diagram of the embodiment 7 of use this patent high-tension transformer.

Fig. 8 is the micro-wave oven high-voltage part schematic diagram of the embodiment 8 of use this patent high-tension transformer.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further to detail.

Embodiment 1; In conjunction with Fig. 1, a kind of microwave oven comprises high-tension transformer 1 and magnetron 7; High-tension transformer 1 comprises skeleton 2, elementary winding 3, first secondary winding 4, second subprime winding 5 and Filament Winding 6 again; First secondary winding 4 and second subprime winding 5 and skeleton 2 open circuits, Filament Winding 6 is formed heating circuit, anode of magnetron ground connection with magnetron 7 negative electrodes.First secondary winding, 4 in-phase output ends and first high-voltage fuse 14, first high-voltage capacitance 15, first high-voltage diode 16 constitute the first half-wave voltage-multiplying circuit; Wherein first high-voltage diode, 16 outputs are connected with the reversed-phase output of magnetron 7 anodes, first secondary winding 4; The first half-wave voltage-multiplying circuit is connected with heating circuit through the 3rd high-voltage diode 17, and wherein the 3rd high-voltage diode 17 outputs are connected with first high-voltage diode, 16 inputs.Second subprime winding 5 inverse output terminals and second high-voltage fuse 9, second high-voltage capacitance 10, second high-voltage diode 11 constitute the second half-wave voltage-multiplying circuit; Second high-voltage diode, 11 outputs are connected with magnetron 7 anodes, second subprime winding 5 in-phase output ends; The second half-wave voltage-multiplying circuit is connected with heating circuit through the 4th high-voltage diode 12, and wherein the 4th high-voltage diode 12 outputs are connected with second high-voltage diode, 11 inputs.In two half-wave circuits; One of them secondary winding is to the high-voltage capacitor charging of this voltage-multiplying circuit; Another one secondary winding just stack gives magnetron 7 power supplies; So all export same power at each half-wave mesohigh transformer, the function of the surge when the 4th high-voltage diode 12 and the 3rd high-voltage diode 17 block magnetron 7 and start except stoping two secondary winding are interconnected, also having.

Embodiment 2; In conjunction with Fig. 2; Embodiment 2 is in the first half-wave multiplication of voltage electricity at first secondary winding, 4 places, between first high-voltage diode, 16 outputs and magnetron 7 anodes, to increase by one the 5th high-voltage diode 13, the five high-voltage diodes 13 output head groundings with the difference of embodiment 1; The effect of the 5th high-voltage diode 13 is to strengthen the ability of anti-surge, and the earth terminal that same situation also can appear in the second half-wave voltage-multiplying circuit increases by one the 6th high-voltage diode 8.

Embodiment 3, and in conjunction with Fig. 3, embodiment 3 is that with the difference of embodiment 1 the 4th high-voltage diode 12 is composed in series by high-voltage diode 18 and high-voltage diode 19, and same situation can appear on other the high-voltage diode or high-voltage capacitance, no longer repeats at this.

Embodiment 4, and in conjunction with Fig. 4, embodiment 4 is to cancel the 5th high-voltage diode 13, the first high-voltage diodes 16 output head groundings with the difference of embodiment 2, and secondary winding 4 reversed-phase outputs are connected with skeleton 2, skeleton 2 ground connection.

Embodiment 5, and in conjunction with Fig. 5, embodiment 5 and the difference of the embodiment 4 Temperature protection device 20 that is in elementary winding 3, to connect replaces first high-voltage fuse 14 and second high-voltage fuse 9, and elementary winding 3 is the windings with three power inputs.

Embodiment 6, and in conjunction with Fig. 6, embodiment 6 is to cancel the 6th high-voltage diode 8, the second high-voltage diodes 11 output head groundings with the difference of embodiment 4, and secondary winding 5 in-phase output ends are connected with skeleton 2, skeleton 2 ground connection.

Embodiment 7, and in conjunction with Fig. 7, embodiment 7 and the difference of embodiment 1 are that first secondary winding 4 connects with 5 anti-phases of second subprime winding, and series connection point is 21, and series connection point 21 is connected with skeleton 2, skeleton 2 ground connection.

Embodiment 8, and in conjunction with Fig. 8, embodiment 8 and the difference of embodiment 7 are that series connection point 21 is connected with skeleton 2, but ground connection voluntarily.

In the foregoing description, in elementary winding, secondary winding or Filament Winding, all can be in series with the Temperature protection device.

Claims

1. a high voltage transformer of microwave oven comprises skeleton, Filament Winding and elementary winding, it is characterized in that: also comprise first secondary winding and second subprime winding;

Have at least an end to be connected in the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding with skeleton.

2. according to the said high voltage transformer of microwave oven of claim 1, it is characterized in that: the series connection of the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding, and series connection point as public exit, public exit is connected with skeleton.

3. according to the said high voltage transformer of microwave oven of claim 1, it is characterized in that: said elementary winding has two inputs at least.

4. according to the said high voltage transformer of microwave oven of claim 1, it is characterized in that: have at least a windings in series that the Temperature protection device is arranged in said Filament Winding, elementary winding, first secondary winding and the second subprime winding.

5. a high voltage transformer of microwave oven comprises skeleton, Filament Winding and elementary winding, it is characterized in that: also comprise first secondary winding and second subprime winding;

Said first secondary winding, second subprime winding and transformer framework open circuit.

6. according to the said high voltage transformer of microwave oven of claim 5, it is characterized in that: the series connection of the reversed-phase output of the in-phase output end of said first secondary winding and second subprime winding, and series connection point as public exit, public exit and skeleton are opened a way.

7. according to the said high voltage transformer of microwave oven of claim 5, it is characterized in that: said elementary winding has two inputs at least.

8. according to the said high voltage transformer of microwave oven of claim 5, it is characterized in that: have at least a windings in series that the Temperature protection device is arranged in said Filament Winding, elementary winding, first secondary winding and the second subprime winding.