CN201349179Y - Switching power supply circuit of pulping machine - Google Patents
Switching power supply circuit of pulping machine Download PDFInfo
- Publication number
- CN201349179Y CN201349179Y CNU2009201260903U CN200920126090U CN201349179Y CN 201349179 Y CN201349179 Y CN 201349179Y CN U2009201260903 U CNU2009201260903 U CN U2009201260903U CN 200920126090 U CN200920126090 U CN 200920126090U CN 201349179 Y CN201349179 Y CN 201349179Y
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- China
- Prior art keywords
- circuit
- output
- switching power
- high frequency
- frequency transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004537 pulping Methods 0.000 title abstract 3
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000001629 suppression Effects 0.000 abstract 4
- 230000004308 accommodation Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 33
- 238000010586 diagram Methods 0.000 description 5
- 235000010469 Glycine max Nutrition 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model provides a switching power supply circuit of pulping machine, includes bridge rectifier filter circuit, EMI suppression circuit, high frequency transformer, output current detection circuitry, single-chip switching power supply module IC circuit, sample feedback circuit and direct current output circuit, wherein bridge rectifier filter circuit, EMI suppression circuit, sample feedback circuit and output current detection circuitry are connected with single-chip switching power supply module IC circuit electricity respectively, high frequency transformer includes primary, first secondary and second secondary, and bridge rectifier filter circuit's output and EMI suppression circuit's one end are connected to primary's one end, and EMI suppression circuit's the other end is connected to its other end, and sampling feedback circuit is connected to high frequency transformer's first secondary, and direct current output circuit is connected to high frequency transformer's second secondary. Use the utility model discloses switching power supply's pulping machine has output voltage stable, small, light in weight, consumes few, simple to operate, stand-by power is little, conversion efficiency is high, voltage accommodation advantage such as wide.
Description
Technical field
The utility model relates to a kind of switching power circuit, a kind of especially switching power circuit of pulper.
Background technology
Now the dc power supply of the control system of the pulper of selling on the market such as soy bean milk making machine, rice paste machine etc. mostly adopts the traditional transformer of low frequency to power, such transformer exist the material that volume is big, weight big, expend many, install bother, defectives such as standby power is big, conversion efficiency is low, voltage adaptation narrow range.A kind of soy bean milk making machine adopts the switching power circuit of the less high frequency transformer of volume for ZL200720053410.8 has disclosed for Chinese patent application number, but because the feedback circuit of this circuit directly is connected on the dc output circuit, the forceful electric power circuit directly links to each other with the light current circuit, thereby cause input AC electricity and output DC not to be isolated, therefore need provide one on feedback circuit, to connect an optocoupler, and then increase cost.
The utility model content
The purpose of this utility model is to overcome the defective of prior art and switching power circuit that a kind of conversion efficiency height, voltage adaptation wide ranges and lower-cost pulper are provided.
The technical solution of the utility model is as follows: comprise that input connects the bridge rectifier filter circuit of AC power, the EMI that is electrically connected with the output of bridge rectifier filter circuit suppresses circuit, suppress the high frequency transformer that circuit output end is electrically connected with EMI, output current detection circuit, single-chip switch power module IC circuit, the sampling feedback circuit and the dc output circuit that are electrically connected with the high frequency transformer output, bridge rectifier filter circuit wherein, EMI suppresses circuit, sampling feedback circuit and output current detection circuit are electrically connected with single-chip switch power module IC circuit respectively, described high frequency transformer comprises primary coil, first secondary coil and second subprime coil, one end of primary coil connects the output of bridge rectifier filter circuit and the end that EMI suppresses circuit, its other end connects the other end that EMI suppresses circuit, first secondary coil of high frequency transformer connects sampling feedback circuit, and the second subprime coil of high frequency transformer connects dc output circuit.
Above-mentioned bridge rectifier filter circuit also is electrically connected with zero cross detection circuit.
The optocoupler model of above-mentioned zero cross detection circuit is PC817.
Above-mentioned bridge rectifier filter circuit includes capacitor C 1, capacitor C 2 and inductance L 1, wherein, 1 anodal connection of one end HC1 of inductance L 1 and capacitor C, the end of the positive pole of other end HC2 and capacitor C 2 and the primary coil T1 of high frequency transformer T is connected the minus earth of capacitor C 1, capacitor C 2.
The above-mentioned switching power circuit that is used for pulper comprises also by resistance R 1 and resistance R 2 and is composed in series high-voltage starting circuit that the high-voltage starting circuit two ends connect the output of bridge rectifier filter circuit and the supply pin of single-chip switch power module IC circuit respectively.
The model of above-mentioned single-chip switch power module IC circuit is OB2211.
The model of the three terminal regulator of above-mentioned dc output circuit is 78L05.
The utility model since switching power circuit because sampling feedback circuit is connected to first secondary coil of high frequency transformer, its sampled feedback signal is not from the output direct current component, but another of high frequency transformer organized secondary output, thereby the input AC electricity is isolated fully with output DC, therefore can in the sampling feedback circuit, not use the peripheral circuit of optocoupler and optocoupler.Use the pulper of the utility model Switching Power Supply to have output voltage stabilization, few, easy for installation, the advantages such as standby power is little, conversion efficiency is high, voltage adaptation wide ranges of volume material little, in light weight, that expend.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model switching power circuit;
Fig. 2 is the circuit theory diagrams of the utility model switching power circuit.
Omitted among the figure and the irrelevant circuit part of the utility model key points in design.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
The utility model switching power circuit can be used for having the pulper of agitating heating function, particularly soy bean milk making machine or rice paste machine.
Please refer to Fig. 1, be the circuit block diagram of the utility model power switch circuit.The utility model comprises that bridge rectifier filter circuit 1, EMI suppress circuit 2, output current detection circuit 3, single-chip switch power module IC circuit 4, sampling feedback circuit 5, dc output circuit 6 and high frequency transformer T.Direction of arrow representation signal transmission direction among the figure.
Please refer to Fig. 2, be circuit theory diagrams of the present utility model.The utility model comprises two power inputs, is connected with AC power, and power output end output low-voltage dc power supply is given control circuit (not being this practical inventive point, so not in circuit theory diagrams), and the output of control circuit is connected to heating element, motor.High frequency transformer T of the present utility model comprises a primary coil T1 and first, second two secondary coil T2, T3.The input termination AC power of bridge rectifier filter circuit 1, the end of an end of the output connection EMI inhibition circuit 2 of bridge rectifier filter circuit 1 and the primary coil T1 of high frequency transformer T, in the present embodiment, the model that high frequency transformer T adopts is EE13; The other end of EMI inhibition circuit 2 connects the other end and the switch power module IC of the primary coil T1 of high frequency transformer T; The end of the first secondary coil T2 of sampling feedback circuit 5 connection high frequency transformer T and the other end ground connection of switch power module IC circuit 4, the first secondary coil T2; Output current detection circuit 3 one ends connect switch power module IC circuit 4, other end ground connection, and the model of the switch power module IC in the present embodiment adopts OB2211, so output voltage is more stable; The two ends of the second subprime coil T3 of dc output circuit 6 connection high frequency transformer T are also exported low-voltage dc power supply and are given control circuit.
Also can increase zero cross detection circuit 7 in the present embodiment.Zero cross detection circuit 7 is received an output cathode point HV+ of bridge rectifier filter circuit 1 by resistance R 43, the 1st pin of another termination optocoupler U2 of resistance R 43, the 2nd pin of optocoupler U2 meets HVG, the 3rd pin of optocoupler U2 meets the negative pole V-of dc output circuit, the 4th pin connecting resistance R44, the capacitor C 28 of optocoupler U2 also exported zero cross signal and detected use to control system, the anodal 5V+ of another termination dc output circuit of resistance R 44, another termination V-of capacitor C 28.
Bridge rectifier filter circuit 1 of the present utility model can be divided into bridge rectifier and filter circuit.Wherein, bridge rectifier comprises diode D1, diode D2, diode D3, diode D4 and diode D9; Two input limits of bridge rectifier connect the zero line and the live wire of AC power respectively, one output cathode point HV+ of bridge rectifier connects the positive pole of diode D9, the negative pole of diode D9 meets the anodal HC1 of capacitor C 1, and another negative pole point of bridge rectifier meets the negative pole HVG of capacitor C 1.Increasing D9 is because zero cross detection circuit is arranged, if do not need the zero passage detection function during system design, can save D9 and zero cross detection circuit.Filter circuit comprises capacitor C 1, capacitor C 2 and inductance L 1, this circuit has the effect of certain inhibition EMI, under less demanding situation, from cost consideration, can only use an electric capacity, promptly one of them electric capacity and inductance L 1 be removed, an end HC1 of inductance L 1 and capacitor C 1 positive pole, diode D9 negative pole are connected together, other end HC2 connects the end of the primary coil T1 of capacitor C 2 positive poles, resistance R 1, resistance R 10, resistance R 4 and high frequency transformer T, and the negative pole of capacitor C 1, capacitor C 2 meets HVG.Wherein R1 and R2 form high-voltage starting circuit, R1 with receive the positive pole of capacitor C 4, the supply pin of switch power module IC after R2 connects.
EMI of the present utility model suppresses circuit 2 and comprises resistance R 4, resistance R 10, capacitor C 3 and diode D5, it is in parallel after wherein resistance R 10 is connected with capacitor C 3 with resistance R 4, the end HC2 of the primary coil T1 of one termination high frequency transformer of resistance R 4 and resistance R 10, the negative pole of another terminating diode D5 of capacitor C 3 and resistance R 4, the positive pole of diode D5 meets the other end and the switch power module IC of high frequency transformer T primary coil T1.
Output current detection circuit 3 of the present utility model comprises resistance R 8, a termination HVG of resistance R 8, another termination switch power module IC.
Claims (7)
1, a kind of switching power circuit that is used for pulper, comprise that input connects the bridge rectifier filter circuit (1) of AC power, the EMI that is electrically connected with the output of bridge rectifier filter circuit (1) suppresses circuit (2), suppress the high frequency transformer (T) that circuit (2) output is electrically connected with EMI, output current detection circuit (3), single-chip switch power module IC circuit (4), the sampling feedback circuit (5) and the dc output circuit (6) that are electrically connected with high frequency transformer (T) output, bridge rectifier filter circuit (1) wherein, EMI suppresses circuit (2), sampling feedback circuit (5) and output current detection circuit (3) are electrically connected with single-chip switch power module IC circuit (4) respectively, it is characterized in that described high frequency transformer (T) comprises primary coil (T1), first secondary coil (T2) and second subprime coil (T3), one end of primary coil (T1) connects the output of bridge rectifier filter circuit (1) and the end that EMI suppresses circuit (2), its other end connects the other end that EMI suppresses circuit (2), first secondary coil (T2) of high frequency transformer (T) connects sampling feedback circuit (5), and the second subprime coil (T3) of high frequency transformer (T) connects dc output circuit (6).
2, the switching power circuit that is used for pulper according to claim 1 is characterized in that above-mentioned bridge rectifier filter circuit (1) also is electrically connected with zero cross detection circuit (7).
3, the switching power circuit that is used for pulper according to claim 2 is characterized in that the optocoupler model of above-mentioned zero cross detection circuit (7) is PC817.
4, the switching power circuit that is used for pulper according to claim 1, it is characterized in that above-mentioned bridge rectifier filter circuit (1) includes electric capacity (C1), electric capacity (C2) and inductance (L1), wherein, one end (HC1) of inductance (L1) is connected with electric capacity (C1) is anodal, one end of the positive pole of the other end (HC2) and electric capacity (C2) and the primary coil (T1) of high frequency transformer (T) is connected the minus earth of electric capacity (C1), electric capacity (C2).
5, the switching power circuit that is used for pulper according to claim 1, it is characterized in that also comprising by resistance (R1) and resistance (R2) being composed in series high-voltage starting circuit that the high-voltage starting circuit two ends connect the output of bridge rectifier filter circuit (1) and the supply pin of single-chip switch power module IC circuit (4) respectively.
6, the switching power circuit that is used for pulper according to claim 1 is characterized in that the model of above-mentioned single-chip switch power module IC circuit (4) is OB2211.
7, the switching power circuit that is used for pulper according to claim 1 is characterized in that the model of the three terminal regulator (U3) of above-mentioned dc output circuit (6) is 78L05.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260903U CN201349179Y (en) | 2009-01-08 | 2009-01-08 | Switching power supply circuit of pulping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260903U CN201349179Y (en) | 2009-01-08 | 2009-01-08 | Switching power supply circuit of pulping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201349179Y true CN201349179Y (en) | 2009-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201260903U Expired - Lifetime CN201349179Y (en) | 2009-01-08 | 2009-01-08 | Switching power supply circuit of pulping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201349179Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075015A (en) * | 2011-01-19 | 2011-05-25 | 中国海洋石油总公司 | Towline high voltage direct current (DC) power supply for geophysical exploration |
| CN102223070A (en) * | 2011-06-11 | 2011-10-19 | 美的集团有限公司 | Low-power consumption switching power supply |
| CN102761277A (en) * | 2011-04-28 | 2012-10-31 | 苏州博创集成电路设计有限公司 | Non-isolated switch power supply circuit |
| CN106580086A (en) * | 2015-10-14 | 2017-04-26 | 广东美的生活电器制造有限公司 | Intelligent soybean milk making machine |
| CN106655815A (en) * | 2016-12-21 | 2017-05-10 | 江西佰仕通电子科技有限公司 | Synchronous rectification circuit |
| CN110554255A (en) * | 2018-05-30 | 2019-12-10 | 华为技术有限公司 | transformer testing method and related device |
-
2009
- 2009-01-08 CN CNU2009201260903U patent/CN201349179Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075015A (en) * | 2011-01-19 | 2011-05-25 | 中国海洋石油总公司 | Towline high voltage direct current (DC) power supply for geophysical exploration |
| CN102075015B (en) * | 2011-01-19 | 2012-08-15 | 中国海洋石油总公司 | Towline high voltage direct current (DC) power supply for geophysical exploration |
| CN102761277A (en) * | 2011-04-28 | 2012-10-31 | 苏州博创集成电路设计有限公司 | Non-isolated switch power supply circuit |
| CN102223070A (en) * | 2011-06-11 | 2011-10-19 | 美的集团有限公司 | Low-power consumption switching power supply |
| CN106580086A (en) * | 2015-10-14 | 2017-04-26 | 广东美的生活电器制造有限公司 | Intelligent soybean milk making machine |
| CN106655815A (en) * | 2016-12-21 | 2017-05-10 | 江西佰仕通电子科技有限公司 | Synchronous rectification circuit |
| CN110554255A (en) * | 2018-05-30 | 2019-12-10 | 华为技术有限公司 | transformer testing method and related device |
| CN110554255B (en) * | 2018-05-30 | 2022-04-22 | 华为数字能源技术有限公司 | Transformer testing method and related device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhu Midea fine Electrical Appliance Manufacturing Co.,Ltd. Assignor: Midea Group Contract record no.: 2012440000112 Denomination of utility model: Switching power circuit for pulper Granted publication date: 20091118 License type: Exclusive License Record date: 20120320 |
|
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Foshan, Shunde District, Beijiao Town, Penglai Road, the United States Industrial City Patentee before: Midea Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |