CN202602528U - Microwave oven variable-frequency power source structure - Google Patents
Microwave oven variable-frequency power source structure Download PDFInfo
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- CN202602528U CN202602528U CN 201220227988 CN201220227988U CN202602528U CN 202602528 U CN202602528 U CN 202602528U CN 201220227988 CN201220227988 CN 201220227988 CN 201220227988 U CN201220227988 U CN 201220227988U CN 202602528 U CN202602528 U CN 202602528U
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- transformer
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- microwave oven
- frequency power
- power supply
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Abstract
The utility model discloses a microwave oven variable-frequency power source structure which comprises a circuit board and elements fixed on the circuit board. The elements comprise a transformer, a radiator and two high voltage diodes. The transformer comprises a magnetic core and a framework, the magnetic core comprises a central column and a side column, the framework comprises a partition board of a transformer coil, the partition board is perpendicular to the central column, the radiator is arranged on one side of the transformer, and the long axis direction of the radiator is parallel to the partition board of the transformer framework. The two high voltage diodes are arranged along the long axis directions of the high voltage diodes, and the direction of the long axis is parallel to the central column of the magnetic core. A wind channel is formed between the space below the transformer of the microwave oven variable-frequency power source structure, the transformer and the radiator, and the high voltage diodes with the largest heating amount in the elements are arranged in front of the transformer in the windward direction. The microwave oven variable-frequency power source structure can effectively reduce temperature and prolong service life of a microwave oven power source.
Description
[technical field]
The utility model relates to the microwave oven variable frequency power supply, relates in particular to a kind of microwave oven variable frequency power supply structure.
[background technology]
Existing microwave oven variable frequency power supply has adopted the high-frequency electronic transformer to replace traditional Industrial Frequency Transformer; The high-frequency electronic transformer has characteristics such as efficient height, good reliability, operating voltage be wide, and the microwave oven variable frequency power supply has adopted a large amount of semiconductor device, because semiconductor device is very responsive to temperature; 10 ° of C of the every rising of temperature; The failure rate of semiconductor device can raise 1 times, if the junction temperature of semiconductor device surpasses 150 ° of C, and the damage of all can losing efficacy of most device.
In order to guarantee enough spaces to satisfy the heat radiation of semiconductor device, the spacing between the existing microwave oven variable frequency power supply components and parts is bigger, causes the volume of power supply bigger; Simultaneously, the components and parts layout on the circuit board is reasonable inadequately, stops wind path, has influenced the heat radiation of ventilation and components and parts; A lot of wire jumpers have been adopted in connection between the electric component, have further strengthened the volume of power supply.
[summary of the invention]
It is good that the technical problem that the utility model will solve provides a kind of components and parts heat radiation, and power failure is few, the microwave oven variable frequency power supply structure that the life-span is long.
The technical problem that the utility model further will solve provides the less microwave oven variable frequency power supply structure of a kind of volume.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is, a kind of microwave oven variable frequency power supply structure comprises circuit board and components and parts, and described components and parts are fixed on the circuit board; Described components and parts comprise transformer, radiator and two high-voltage diodes; Described transformer comprises magnetic core and skeleton; Described magnetic core comprises newel and side column, and described skeleton comprises the space bar of transformer coil, and described space bar is vertical with newel; Described radiator is arranged in a side of transformer, and the long axis direction of radiator is parallel to the space bar of transformer framework; Two high-voltage diodes are arranged in the place ahead of transformer, and two high-voltage diodes are arranged along the long axis direction of itself, and the direction of major axis is parallel with the newel of magnetic core.
Above-described microwave oven variable frequency power supply structure, two high-voltage diodes arrange that near the forward position of circuit board the side column of magnetic core of transformer is positioned at the top of two high-voltage diodes near two high-voltage diodes.
Above-described microwave oven variable frequency power supply structure has the ventilation slot of high-voltage diode on the circuit board of the below of said high-voltage diode.
Above-described microwave oven variable frequency power supply structure, the copper sheet area that is connected with the high-voltage diode pin on the circuit board is not less than 250 square millimeters.
Above-described microwave oven variable frequency power supply structure; Described components and parts comprise low-voltage filter electric capacity and two resonant capacitances; Low-voltage filter electric capacity and two resonant capacitances are arranged in radiator and are arranged in the air channel that forms between the transformer; Low-voltage filter electric capacity and two resonant capacitances are arranged along the long axis direction of itself, and the direction of low-voltage filter electric capacity and two resonant capacitance major axis is parallel with the long axis direction of radiator.
Above-described microwave oven variable frequency power supply structure, described components and parts comprise differential mode inductance, described differential mode inductance is annular inductance; Low-voltage filter electric capacity is back along arranging that differential mode inductance is arranged in the side of low-voltage filter electric capacity near transformer near circuit board, and the axis direction of differential mode inductance is parallel to the long axis direction of radiator.
Above-described microwave oven variable frequency power supply structure; Described components and parts comprise two high-voltage filtering capacitors; Two high-voltage filtering capacitors are arranged in the opposite side of transformer; Two high-voltage filtering capacitors are arranged along the long axis direction of itself, and the direction of two high-voltage filtering capacitor major axis is parallel with the direction of transformer framework space bar.
Above-described microwave oven variable frequency power supply structure, described components and parts comprise high-tension resistive, and described high-tension resistive is arranged in the outside of two high-voltage filtering capacitors, and the long axis direction of high-tension resistive is parallel with the long axis direction of two high-voltage filtering capacitors.
Above-described microwave oven variable frequency power supply structure, the filament wire pin arrangement on institute's circuit board is on the line stretcher of the major axis of high-tension resistive.
Form the ventilation and heat that the air channel helps components and parts between space, transformer and the radiator of the utility model microwave oven variable frequency power supply structure transformer below, the components and parts that are arranged in the air channel have the cooling effect that dispels the heat preferably.The maximum high-voltage diode of caloric value is arranged in the place ahead of transformer down with the wind in the components and parts, can have and reduce temperature effectively, improves the useful life of microwave oven supply power.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the stereogram of the utility model microwave oven variable frequency power supply structure embodiment.
Fig. 2 is the front view of the utility model microwave oven variable frequency power supply structure embodiment.
Fig. 3 is the vertical view of the utility model microwave oven variable frequency power supply structure embodiment.
Fig. 4 is the right view of the utility model microwave oven variable frequency power supply structure embodiment.
Fig. 5 is the left view of the utility model microwave oven variable frequency power supply structure embodiment.
[embodiment]
To the utility model embodiment 1 shown in Figure 5, the microwave oven variable frequency power supply comprises PCB circuit board 1 and is fixed on the components and parts on the circuit board 1 at Fig. 1.
Components and parts on the circuit board 1 comprise transformer 2, radiator 3, two high-voltage diodes 4, low-voltage filter electric capacity 5, two resonant capacitances 6, differential mode inductance 7, high-voltage filtering capacitor 8 and high-tension resistives 9.
Transformer 2 comprises magnetic core 201 and skeleton 202; Magnetic core 201 comprises newel and side column 203; Skeleton 202 comprises a plurality of space bars 204 of transformer coil; Space bar 204 is vertical with the axes O-O of newel, and radiator 3 is arranged in a side of transformer 2, and the long axis direction of radiator 3 is parallel to the space bar 204 of transformer 2 skeletons 202.Two high-voltage diodes 4 are arranged in the place ahead of transformer 2, arrange near the forward position of circuit board 1.Two high-voltage diodes 4 are arranged along the long axis direction in-line of itself, and the direction of high-voltage diode 4 major axis is parallel with the axes O-O of the newel of magnetic core 201.
The side column 203 of transformer 2 magnetic cores 201 is positioned at the top of two high-voltage diodes 4 near the forward position of circuit board 1.Have the ventilation slot 101 of high-voltage diode 4 on the circuit board 1 of the below of high-voltage diode 4.
In order to improve high-voltage diode 4 heat radiations, the copper sheet area that is connected with high-voltage diode 4 pins on the circuit board 1 is respectively 300 ± 50 square millimeters and 370 ± 50 square millimeters.
Low-voltage filter electric capacity 5 and two resonant capacitances 6 are arranged in radiator 3 and are arranged in the air channel that forms between the transformer 2, and wherein, low-voltage filter electric capacity 5 is back along arranging near circuit board.Low-voltage filter electric capacity 5 and two resonant capacitances 6 are arranged along the long axis direction of itself, and low-voltage filter electric capacity 5 is parallel with the long axis direction of radiator 3 with the direction of two resonant capacitance 6 major axis.
Two high-voltage filtering capacitors 8 are arranged in the opposite side of transformer 2; Be positioned at the below of magnetic core 201; Two high-voltage filtering capacitors 8 are arranged along the long axis direction in-line of itself, and the direction of two high-voltage filtering capacitor 8 major axis is parallel with the direction of transformer framework 202 space bars 204.
High-tension resistive 9 is arranged in the outside of two high-voltage filtering capacitors 8, and the long axis direction of high-tension resistive 9 is parallel with the long axis direction of two high-voltage filtering capacitors 8.
In the present embodiment, the high potential assembly partial volume can reach and minimize.High-voltage diode 4 and high-voltage filtering capacitor 8 are installed on the below of magnetic core of transformer 201, have made full use of the space of transformer bottom, and the area that makes high potential assembly partly take the PCB circuit board dwindles greatly.
The power supply cooling air is to for to blow over converter power supply perpendicular to the direction of transformer newel axes O-O from the forward position of PCB circuit board; High-voltage diode 4 is in the windward side of microwave oven variable frequency power supply; Transformer 2 bottoms itself let in air; High-voltage diode 4 can obtain good cooling, and following table is that high-voltage diode is parallel to transformer newel axis direction and the contrast of cooling effect during perpendicular to transformer newel axis direction:
| Installation direction | The O-O direction parallels to the axis | Perpendicular to axes O-O direction |
| Diode temperature | 92C° | 103°C |
The main components and parts that other caloric values are less; Like low-voltage filter electric capacity 5, two resonant capacitances 6, differential mode inductance 7 and high-tension resistives 9, their axis just is parallel to the direction that cooling air flows in the space bar 204 of transformer framework; Can reduce the choke area in the air channel; Improvement is to the cooling effect of power supply, and the forward layout of main components and parts can also be saved shared PCB board area.
Claims (9)
1. a microwave oven variable frequency power supply structure comprises circuit board and components and parts, and described components and parts are fixed on the circuit board; Described components and parts comprise transformer, radiator and two high-voltage diodes; Described transformer comprises magnetic core and skeleton, and described magnetic core comprises newel and side column, and described skeleton comprises the space bar of transformer coil; Described space bar is vertical with newel; It is characterized in that described radiator is arranged in a side of transformer, the long axis direction of radiator is parallel to the space bar of transformer framework; Two high-voltage diodes are arranged in the place ahead of transformer, and two high-voltage diodes are arranged along the long axis direction of itself, and the direction of major axis is parallel with the newel of magnetic core.
2. microwave oven variable frequency power supply structure according to claim 1 is characterized in that, two high-voltage diodes arrange that near the forward position of circuit board the side column of magnetic core of transformer is positioned at the top of two high-voltage diodes near two high-voltage diodes.
3. microwave oven variable frequency power supply structure according to claim 2 is characterized in that, has the ventilation slot of high-voltage diode on the circuit board of the below of said high-voltage diode.
4. microwave oven variable frequency power supply structure according to claim 1 is characterized in that the copper sheet area that is connected with the high-voltage diode pin on the circuit board is not less than 250 square millimeters.
5. microwave oven variable frequency power supply structure according to claim 1; It is characterized in that; Described components and parts comprise low-voltage filter electric capacity and two resonant capacitances; Low-voltage filter electric capacity and two resonant capacitances are arranged in radiator and are arranged in the air channel that forms between the transformer, and low-voltage filter electric capacity and two resonant capacitances are arranged along the long axis direction of itself, and the direction of low-voltage filter electric capacity and two resonant capacitance major axis is parallel with the long axis direction of radiator.
6. microwave oven variable frequency power supply structure according to claim 5 is characterized in that described components and parts comprise differential mode inductance, and described differential mode inductance is annular inductance; Low-voltage filter electric capacity is back along arranging that differential mode inductance is arranged in the side of low-voltage filter electric capacity near transformer near circuit board, and the axis direction of differential mode inductance is parallel to the long axis direction of radiator.
7. microwave oven variable frequency power supply structure according to claim 1; It is characterized in that; Described components and parts comprise two high-voltage filtering capacitors; Two high-voltage filtering capacitors are arranged in the opposite side of transformer, and two high-voltage filtering capacitors are arranged along the long axis direction of itself, and the direction of two high-voltage filtering capacitor major axis is parallel with the direction of transformer framework space bar.
8. microwave oven variable frequency power supply structure according to claim 7; It is characterized in that; Described components and parts comprise high-tension resistive, and described high-tension resistive is arranged in the outside of two high-voltage filtering capacitors, and the long axis direction of high-tension resistive is parallel with the long axis direction of two high-voltage filtering capacitors.
9. microwave oven variable frequency power supply structure according to claim 8 is characterized in that the filament wire pin arrangement on institute's circuit board is on the line stretcher of the major axis of high-tension resistive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227988 CN202602528U (en) | 2012-05-21 | 2012-05-21 | Microwave oven variable-frequency power source structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227988 CN202602528U (en) | 2012-05-21 | 2012-05-21 | Microwave oven variable-frequency power source structure |
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| Publication Number | Publication Date |
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| CN202602528U true CN202602528U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220227988 Expired - Fee Related CN202602528U (en) | 2012-05-21 | 2012-05-21 | Microwave oven variable-frequency power source structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637411B (en) * | 2017-10-11 | 2018-10-01 | 海韻電子工業股份有限公司 | Transformer structure |
| CN109065336A (en) * | 2018-09-20 | 2018-12-21 | 广东尚研电子科技有限公司 | A kind of potential device and its manufacturing method of microwave variable-frequency power sources |
| CN111010850A (en) * | 2019-12-11 | 2020-04-14 | 广东尚研电子科技有限公司 | Improved microwave variable frequency power supply heat dissipation structure and power supply |
-
2012
- 2012-05-21 CN CN 201220227988 patent/CN202602528U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637411B (en) * | 2017-10-11 | 2018-10-01 | 海韻電子工業股份有限公司 | Transformer structure |
| CN109065336A (en) * | 2018-09-20 | 2018-12-21 | 广东尚研电子科技有限公司 | A kind of potential device and its manufacturing method of microwave variable-frequency power sources |
| CN111010850A (en) * | 2019-12-11 | 2020-04-14 | 广东尚研电子科技有限公司 | Improved microwave variable frequency power supply heat dissipation structure and power supply |
| CN111010850B (en) * | 2019-12-11 | 2021-06-22 | 广东尚研电子科技有限公司 | Improved microwave variable frequency power supply heat dissipation structure and power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20210521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |