CN101416839B - Circuit of soymilk machine - Google Patents
Circuit of soymilk machine Download PDFInfo
- Publication number
- CN101416839B CN101416839B CN2008102193037A CN200810219303A CN101416839B CN 101416839 B CN101416839 B CN 101416839B CN 2008102193037 A CN2008102193037 A CN 2008102193037A CN 200810219303 A CN200810219303 A CN 200810219303A CN 101416839 B CN101416839 B CN 101416839B
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- triode
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- resistance
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- 235000013322 soy milk Nutrition 0.000 title 1
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 24
- 244000068988 Glycine max Species 0.000 claims abstract description 24
- 239000008267 milk Substances 0.000 claims abstract description 24
- 210000004080 milk Anatomy 0.000 claims abstract description 24
- 235000013336 milk Nutrition 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 abstract description 5
- 238000005485 electric heating Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 235000021251 pulses Nutrition 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses a circuit of a soybean milk machine, which comprises a control unit, an execution unit and a power supply unit, wherein the control unit comprises a central processing chip; the execution unit comprises a motor, an electric heating device, a first switch connected with the electric heating device in series, a first relay for controlling the first switch to be switched on and switched off and a first relay control circuit; the first relay control circuit is connected with the central processing chip; the method is characterized in that: the first relay control circuit comprises at least two triodes which are connected in series, and the triodes which are connected in series are connected with the first relay. Compared with the prior art, the circuit of the invention improves the relay control circuit: through setting up two at least triodes of establishing ties, consequently only can lead to the soybean milk machine not normally work under the condition that all triodes appear the short circuit to improve the reliability of soybean milk machine performance.
Description
Technical field
The present invention relates to the control circuit of the electric heater unit of soy bean milk making machine circuit, particularly soy bean milk making machine.
Background technology
The electro-heat equipment of the soy bean milk making machine of selling on the market is realized controlling by relay and control circuit thereof by central processing element now.Because present control relay circuit has only a triode, triode usually the situation of short circuit can occur, thereby causes the soy bean milk making machine cisco unity malfunction, therefore causes the soy bean milk making machine performance unreliable; In addition, because central processing element is to control electric heater unit by exporting simple high-low level, therefore control procedure is unreliable, as crashing when central process chip or relay control pin that reason such as water inlet causes central processing element during always for high level, heater heats always and causes the generation of accident.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of safe and reliable soy bean milk making machine circuit is provided.
In order to solve the problems of the technologies described above, the present invention includes following technical scheme:
A kind of soy bean milk making machine circuit comprises control module, performance element and power subsystem, and described control module comprises central processing element; Described performance element comprises first relay and first control relay circuit of motor, electric heater unit, first switch of connecting with electric heater unit, the control first switch folding; First control relay circuit is connected with central processing element; It is characterized in that: described first control relay circuit includes the triode of at least two series connection, and the triode of series connection is connected with first relay.
Described first control relay circuit comprises the 22 resistance and the 13 electric capacity, the 22 resistance one end is connected with the pin of central processing element, the other end is connected with the positive pole of the 13 electric capacity, controls the triode of connecting by first relay control signal that central processing element sends through the 22 resistance and the 13 electric capacity.
Further, described first control relay circuit comprises the 4th triode, the 16 resistance that is connected with the base stage of the 4th triode, the 6th triode, the 17 resistance, the 7th electric capacity, the 12 diode and the 13 diode that are connected with the base stage of the 6th triode, the plus earth of the 13 diode, the negative pole of the 13 diode and the 13 electric capacity (negative pole be connected; The positive pole of the 12 diode is connected with the negative pole of the 13 electric capacity, and the negative pole of the 12 diode is connected with the positive pole of the 16 resistance, the 17 resistance and the 7th electric capacity; The minus earth of the 7th electric capacity; The emitter stage of the 6th triode is connected to ground, and the colelctor electrode of the 6th triode is connected to the emitter stage of the 4th triode, and the colelctor electrode of the 4th triode is connected to first relay.
Described the 13 electric capacity, the 7th electric capacity all are electrochemical capacitor.
Further, described first control relay circuit also comprises two ten one resistance in parallel with the 7th electric capacity.
Compared with prior art, circuit of the present invention is by improving control relay circuit: by the triode of at least two series connection is set, therefore only under the situation of short circuit appears in all triodes, just can cause the soy bean milk making machine cisco unity malfunction, thereby improve the reliability of soy bean milk making machine performance.In addition, control relay circuit of the present invention also is connected with electric capacity, also can avoid when chip crashes or reason such as water inlet causes chip relay control pin during always for high level, and heater heats always and causes the generation of accident.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is the control module circuit diagram of circuit preferred embodiment of the present invention;
Fig. 3 is the power unit circuit figure of circuit preferred embodiment of the present invention;
Fig. 4 is the performance element circuit diagram of circuit preferred embodiment of the present invention.
Omitted among the figure with the present invention and designed the irrelevant circuit of main points, as anti-overflow circuit, power supply indicator, warning device etc.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment
Please refer to Fig. 1 to Fig. 4, soy bean milk making machine circuit of the present invention comprises control module 1, performance element 2 and power subsystem 3.Fig. 1 is a circuit block diagram of the present invention, has roughly described the electrical connection of each electronic component in the circuit.
As shown in Figure 2, control module 1 comprises central processing element U3 (central processing element of present embodiment adopts single-chip microcomputer, and model is MC80F0604), the zero cross detection circuit 8 and the reset circuit 10 that are connected with central processing element U3; The pin 7 of single-chip microcomputer is connected with zero cross detection circuit 8, and the pin 15 of single-chip microcomputer is connected with reset circuit 10, and 13,14 pins of single-chip microcomputer connect two pin of crystal oscillator Y1 respectively, and crystal oscillator Y1 frequency is 4MHZ, and 5 pins connect the input power supply of single-chip microcomputer.11 pins of single-chip microcomputer are connected with first control relay circuit 6, and 10 pins of single-chip microcomputer are connected with second control relay circuit 9.
As shown in Figure 3; the power supply of power subsystem 3 is imported by J1, J2; by transformer TR1 step-down is to carry out rectification, filtering after the low-voltage; rectification, filtered voltage provide stable low-voltage by linear Integrated voltage-stablizer U1 (model LM78L05) for central processing element U3; F1 is a fusible link; when circuit was short-circuited abnormal conditions, fusible link disconnected, thereby has protected motor, central processing element U3 etc.R1 is a pressure cell, and when voltage takes place when unusual, piezo-resistance disconnects and the safety of other parts of holding circuit.
As shown in Figure 4, performance element 2 comprises motor 4 and electric heater unit 5 in parallel, and electric heater unit 5 is in series with first switch S, 1, the first switch S 1 by the 1 control folding of first relay K; The main line of performance element 2 circuit is provided with second switch S2, and second switch S2 is by the 2 control foldings of second relay K; Motor 4 is in series with controllable silicon T1, and controllable silicon T1 connects an optic coupling element U2, and optic coupling element U2 is connected to central processing element U3 by control circuit 7; Central processing element U3 cooperates power amplification circuit, goes to realize the control function of light current to forceful electric power by the break-make of first relay K, 1, the second relay K 2.When 2 energisings of second relay K, an end of electric heater unit 5 gets; When 1 energising of first relay K, electric heater unit 5 other ends get electric, the beginning heating work.Resistance R 13, R16, the R17 that links to each other with transistor base among the figure plays the effect of a current limliting; play the effect of an afterflow when relay turn-offs with relay diode connected in parallel D7, D9; triode so that protection is connected with relay makes system more stable.
As shown in Figure 4, first control relay circuit 6 comprises the 4th triode Q4, the 16 resistance R 16 that is connected with the base stage of the 4th triode, the 6th triode Q6, the 17 resistance R 17 that is connected with the base stage of the 6th triode and the 22 resistance R the 22, the 13 capacitor C 13, the 7th capacitor C the 7, the 12 diode D12, the 13 diode D13, wherein, the plus earth of the 13 diode D13, the negative pole of the 13 diode D13 is connected with the negative pole of the 13 capacitor C 13; The positive pole of the 12 diode D12 is connected with the negative pole of the 13 capacitor C 13, and the negative pole of the 12 diode D12 is connected with the positive pole of the 16 resistance R the 16, the 17 resistance R 17 and the 7th capacitor C 7; The minus earth of the 7th capacitor C 7; The emitter stage of the 6th triode Q6 is connected to ground, and the colelctor electrode of the 6th triode Q6 is connected to the emitter stage of the 4th triode Q4.The colelctor electrode of the 4th triode Q4 is connected with first relay K 1.The 13 capacitor C 13 has been utilized the logical interchange of electric capacity, the characteristic of resistance direct current, central processing element U3 has only the pulse current that constantly sends high frequency could pass through the 13 capacitor C 13, through driving the 4th triode Q4, the 6th triode Q6 by the 16 resistance R the 16, the 17 resistance R 17 behind the 12 diode D12, the 7th capacitor C 7 plays the effect of temporary transient energy storage again.Because the 13 capacitor C 13 can only be passed through alternating current, can't pass through direct current, as central process chip U3 crashes or reason such as water inlet causes central processing element U3 relay control pin RELAY2 during always for high level, heater is unlikely and heats always and have an accident.
In the present embodiment, the 22 resistance R 22 is connected on the pin 11 of central processing element U3, can produce pwm control signal on this pin.The 13 diode D13 plays protection as catching diode, and when preventing that square wave from stopping suddenly, the negative pressure of generation is damaged other components and parts.The 12 diode D12 plays the function of individual event conducting, and electric current can only flow to the positive pole of the 12 diode D12 from R22 through the 13 capacitor C 13.In addition, the 13 capacitor C 13 in the present embodiment, the 7th capacitor C 7 adopt electrochemical capacitor, and tool plays filtering, can will filter into direct current signal by the square wave of the 12 diode D12.Two ten one resistance R 21 in parallel with the 7th capacitor C 7 is in order to make the 7 faster discharges of the 7th capacitor C.The triode of present embodiment has only two, also can be made as required certainly three or more than, its connected mode can be with reference to the connected mode of the 4th triode Q4 and the 6th triode Q6.
The operation principle of the electric heater unit in the present embodiment is as follows:
When soy bean milk making machine was started working, central processing element U3 (as single-chip microcomputer) sent the signal of the PWM square wave of 2KHz.Behind the 22 resistance R 22 (playing metering function), the 13 capacitor C 13 and the 12 diode D12, square-wave signal is filtered into the direct current high level signal by the 7th capacitor C 7, this moment the 4th triode Q4 and the 6th triode Q6 conducting, the electromotive force of Q2-C is low, like this, the pressure drop of one+12V is just arranged on the coil of first relay K 1, first relay K 1 will be moved, first switch S, 1 closure, at this moment N-HEAT and N-LINE are connected together.Like this, an end L-HEAT of electric heater unit is the live wire of civil power, and an end N-HEAT is the zero line of civil power, and the pressure drop of electro-heat equipment two ends is about 220VAC, thereby has realized heating function, and after 1 adhesive of first relay K, AC signal can conducting.At this moment whether electric heater unit 5 can be controlled by second relay K 2 and work, and whether motor 4 also can be controlled by controllable silicon T1 and work.In the time of the soy bean milk making machine power cut-off, central processing element U3 (as single-chip microcomputer) stops to send the PWM square-wave signal, the output direct current signal, and do not have electric current to pass through the 13 capacitor C 13 this moment.The 7th capacitor C 7 by 21 repid discharges of the 21 resistance R after, form low level signal, the 4th triode Q4 and the 6th triode Q6 turn-off, first switch S 1 disconnects.
The present invention has the following advantages:
1. in the situation of the 4th triode Q4 and the 6th one of them short circuit of triode Q6, in soy bean milk making machine work, the high-frequency pulse current that central processing element U3 constantly sends can drive the unspoiled triode of another one and work, and therefore improves the reliability of soy bean milk making machine performance; When soy bean milk making machine was idle, even the CE utmost point short circuit of any one triode, first relay K 1 all can't adhesive, thus electric heater unit can't work, played protection.
2. be subjected to very strong interference and after crashing as central process chip U3 (such as single-chip microcomputer); the PWM square-wave signal stops output; the 13 capacitor C 13 plays isolated DC; no matter central processing element U3 (such as single-chip microcomputer) sheet pin keeps high level or low level; electric current all can't pass through the 13 capacitor C 13; electric charge on the 7th capacitor C 7 is emitted fast by the 21 resistance R 21 at this moment; form low level; the 4th triode Q4 and the 6th triode Q6 turn-off; first relay K 1 can't keep attracting state; thereby first switch S 1 is disconnected, and electro-heat equipment quits work like this, has played protection.
Claims (5)
1. a soy bean milk making machine circuit comprises control module (1), performance element (2) and power subsystem (3), and described control module (1) comprises central processing element (U3); Described performance element (2) comprises first relay (K1) and first control relay circuit (6) of motor (4), electric heater unit (5), first switch (S1) of connecting with electric heater unit (5), the folding of control first switch (S1); First control relay circuit (6) is connected with central processing element (U3); It is characterized in that: described first control relay circuit (6) includes the triode (Q4, Q6) of at least two series connection, and the triode of series connection is connected with first relay (K1).
2. soy bean milk making machine circuit according to claim 1, it is characterized in that: described first control relay circuit (6) comprises the 22 resistance (R22) and the 13 electric capacity (C13), the 22 resistance (R22) end is connected with the pin of central processing element (U3), the other end is connected with the positive pole of the 13 electric capacity (C13), controls the triode of connecting by first relay control signal that central processing element (U3) sends through the 22 resistance (R22) and the 13 electric capacity (C13).
3. soy bean milk making machine circuit according to claim 2 is characterized in that: described first control relay circuit (6) comprises the triode of two series connection, is the 4th triode (Q4) and the 6th triode (Q6); First control relay circuit (6) also comprises the 16 resistance (R16) that is connected with the base stage of the 4th triode (Q4), the 17 resistance (R17), the 7th electric capacity (C7), the 12 diode (D12) and the 13 diode (D13) that are connected with the base stage of the 6th triode (Q6), the plus earth of the 13 diode (D13), the negative pole of the 13 diode (D13) is connected with the negative pole of the 13 electric capacity (C13); The positive pole of the 12 diode (D12) is connected with the negative pole of the 13 electric capacity (C13), and the negative pole of the 12 diode (D12) is connected with the positive pole of the 16 resistance (R16), the 17 resistance (R17) and the 7th electric capacity (C7); The minus earth of the 7th electric capacity (C7); The emitter stage of the 6th triode (Q6) is connected to ground, and the colelctor electrode of the 6th triode (Q6) is connected to the emitter stage of the 4th triode (Q4), and the colelctor electrode of the 4th triode (Q4) is connected to first relay (K1).
4. according to the described soy bean milk making machine circuit of claim 3, it is characterized in that: described the 13 electric capacity (C13), the 7th electric capacity (C7) all are electrochemical capacitor.
5. according to claim 3 or 4 described soy bean milk making machine circuit, it is characterized in that: described first control relay circuit (6) also comprises two ten one resistance (R21) in parallel with the 7th electric capacity (C7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102193037A CN101416839B (en) | 2008-11-21 | 2008-11-21 | Circuit of soymilk machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102193037A CN101416839B (en) | 2008-11-21 | 2008-11-21 | Circuit of soymilk machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101416839A CN101416839A (en) | 2009-04-29 |
| CN101416839B true CN101416839B (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102193037A Active CN101416839B (en) | 2008-11-21 | 2008-11-21 | Circuit of soymilk machine |
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| CN (1) | CN101416839B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997477A (en) * | 2009-08-17 | 2011-03-30 | 樱花卫厨（中国）股份有限公司 | PWM pulse regulating circuit for motor of range hood |
| CN101763984B (en) * | 2009-12-30 | 2012-10-03 | 九阳股份有限公司 | Circuit and method for controlling relay in soymilk machine circuit |
| CN102662266A (en) * | 2012-05-22 | 2012-09-12 | 航天科技控股集团股份有限公司 | Liquid crystal screen heating controller and heating method |
| CN105720838A (en) * | 2016-04-13 | 2016-06-29 | 洪明 | Small-power supply circuit |
| CN110993440B (en) * | 2019-05-20 | 2024-08-20 | 浙江诚富电器科技有限公司 | Suction control circuit with self-checking function |
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2008
- 2008-11-21 CN CN2008102193037A patent/CN101416839B/en active Active
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| CN101416839A (en) | 2009-04-29 |
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| C14 | Grant of patent or utility model | ||
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Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
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| 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 |