CN205620825U - Food processor and control circuit thereof - Google Patents
Food processor and control circuit thereof Download PDFInfo
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- CN205620825U CN205620825U CN201620411523.XU CN201620411523U CN205620825U CN 205620825 U CN205620825 U CN 205620825U CN 201620411523 U CN201620411523 U CN 201620411523U CN 205620825 U CN205620825 U CN 205620825U
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- cooking machine
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- 238000010411 cooking Methods 0.000 claims abstract description 63
- 238000005259 measurement Methods 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 6
- 235000013399 edible fruits Nutrition 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a cooking machine and control circuit thereof. Wherein, this control circuit includes: the current measuring circuit is arranged in the motor loop; the motor is connected with the current measuring circuit in series in the motor loop; and the control chip is respectively connected with the current measuring circuit and the motor and is used for controlling the motor to reversely rotate when detecting that the current flowing through the current measuring circuit is greater than a set value. The utility model provides a technical problem of unable automatic reversal when current cooking machine stalling.
Description
Technical field
The utility model relates to field of circuit control, in particular to a kind of cooking machine and control circuit thereof.
Background technology
Cooking machine (e.g., Normal juice machine) typically uses fashion of extrusion squeezed juice, and this mode squeezed the juice can be largely
The nutritional labeling of preservation fruit, thus accepted and liked by increasing consumer.Fig. 1 is according to existing skill
A kind of schematic diagram of the control method of the cooking machine of art, as it is shown in figure 1, this cooking machine when squeezing the juice be typically motor just
Rotary-die type, but, machine rotate forward run into hard fruit stone when, it may appear that the phenomenon of stall, in order to allow the material of stall
Reason machine remains in operation, then need user's manual unlocking reversal switch, allow cooking machine invert, to allow the water squeezing in bucket
Fruit is poured out, just can be properly functioning, so can increase some inconvenience during consumer uses cooking machine.
For problem that cannot be auto-reverse during above-mentioned existing cooking machine stall, effective solution party is not yet proposed at present
Case.
Utility model content
The utility model embodiment provides a kind of cooking machine and control circuit thereof, at least to solve existing cooking machine stall
The auto-reverse technical problem of Shi Wufa.
An aspect according to the utility model embodiment, provides the control circuit of a kind of cooking machine, this control circuit
Including: flow measurement circuit, it is arranged in electric motor loop；Motor, is connected with described flow measurement circuit in described electric motor loop；
Control chip, is connected with described flow measurement circuit and described motor respectively, for flowing through described flow measurement circuit detecting
Electric current, not when preset range, controls described motor reversal.
Further, described flow measurement circuit includes: current sense resistor, the first end and the zero of the AC power of cooking machine
Line connects, and the second end is connected with described motor；The detection signal input part of described control chip and described current detecting electricity
First end of resistance connects.
Further, when described motor rotates forward, the second end of described current sense resistor and the first end of described motor
Connect；When described motor reversal, the second end of described current sense resistor is connected with the first end of described motor.
Further, described control circuit also includes: drive assembly, respectively with the AC power of cooking machine and described electricity
Machine connects；The control signal output of described control chip is connected with the control end of described driving assembly, described driving group
Part, under the control of described control chip, drives described motor reversal.
Further, described driving assembly includes: the first triode, grounded emitter, base stage and described control chip
Control signal output connect；First relay, the first end of coil is connected with the colelctor electrode of described first triode,
Second end of coil and the first dc source connect, and the first contact is connected with the second end of described motor, the second contact and
The live wire of described AC power connects, and the 3rd contact is connected with the zero line of described AC power；Second triode, launches
Pole is grounded, and base stage is connected with the control signal output of described control chip；Second relay, the first end of coil with
The colelctor electrode of described second triode connects, the second end of coil and the connection of the second dc source, the first contact with described
First end of motor connects, and the second contact is connected with the zero line of described AC power, the 3rd contact and described AC power
Live wire connect.
Further, described driving assembly also includes: the first diode, negative pole and the coil of described first relay
First end connects, and the second end of the coil with described first relay for the positive pole is connected；Second diode, negative pole with described
First end of the coil of the second relay connects, and the second end of the coil with described second relay for the positive pole is connected.
Further, described driving assembly is connected with zero line and the live wire of described AC power by rectification circuit.
Further, described control chip includes: comparator, is connected with described flow measurement circuit, for flow through described
The electric current of flow measurement circuit, not when preset range, generates low level signal；Signal output port, with described comparator even
Connect, for exporting described low level signal in preset duration.
Further, described control circuit includes: master switch, is connected with described control chip, for described control
The input forward or reverse instruction of coremaking piece.
According to the another aspect of the utility model embodiment, additionally providing a kind of cooking machine, this cooking machine includes above-mentioned
The control circuit of the cooking machine described in an embodiment of anticipating.
In the utility model embodiment, by the electric current in flow measurement electric circuit inspection electric motor loop, and detect at this
When current value is more than setting value, control chip controls motor reversal.By above-described embodiment, can be according to detecting
The size of electric motor loop electric current automatically controls motor reversal, compared to prior art needs cooking machine rotate forward occur
The situation of manually reversion is needed, it is achieved that improve the effect of cooking machine degree easy to use, solve existing cooking during stall
Problem that cannot be auto-reverse during machine stall.
Brief description
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used for explaining the utility model, is not intended that to of the present utility model
Improper restriction.In the accompanying drawings:
Fig. 1 is the schematic diagram of the control method of a kind of cooking machine according to prior art；
Fig. 2 is the schematic diagram of the control circuit of a kind of cooking machine according to the utility model embodiment；
Fig. 3 is the connection signal of the control circuit that a kind of optional cooking machine according to the utility model embodiment rotates forward
Figure；
Fig. 4 is the connection signal of the control circuit of a kind of optional cooking machine reversion according to the utility model embodiment
Figure；
Fig. 5 is the workflow diagram of the control circuit of a kind of optional cooking machine according to the utility model embodiment；With
And
Fig. 6 is the schematic diagram of the control circuit of a kind of optional cooking machine according to the utility model embodiment.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the utility model scheme, real below in conjunction with the utility model
Execute the accompanying drawing in example, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that institute
The embodiment describing is only a part of embodiment of the utility model, rather than whole embodiments.Based on this practicality
Embodiment in novel, those of ordinary skill in the art obtained under the premise of not making creative work all its
His embodiment, all should belong to the scope of the utility model protection.
It should be noted that term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing,
" second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should manage
Solve the data so using can exchange in the appropriate case, in order to embodiment of the present utility model described herein can
Implement with the order in addition to those of diagram or description here.
According to the utility model embodiment, provide the embodiment of the control circuit of a kind of cooking machine.Fig. 2 is according to this
A kind of schematic diagram of the control circuit of the cooking machine of utility model embodiment, as in figure 2 it is shown, this control circuit includes:
Flow measurement circuit the 12nd, motor 14 and control chip 16.
Wherein, flow measurement circuit 12, is arranged in electric motor loop；Motor 14, with flow measurement circuit 12 in electric motor loop
Connect；Control chip 16, is connected with flow measurement circuit 12 and motor 14 respectively, for flowing through flow measurement circuit detecting
The electric current of 12 is not when preset range, and control motor 12 inverts.
Use the utility model, detected the electric current in electric motor loop by flow measurement circuit 12, and at this electric current detecting
When value is more than setting value, control chip 16 controls motor 14 and inverts.By above-described embodiment, can be according to detecting
The size of electric motor loop electric current judge whether motor occurs stall, and in the case of judging motor generation stall,
Automatic control motor inverts, and manually inverts compared to needing the needs when stall occurs in cooking machine rotating forward in prior art
Situation, it is achieved that improve the effect of cooking machine degree easy to use, cannot be auto-reverse when solving existing cooking machine stall
Problem.
Above-mentioned preset range can be a1～a2Scope, wherein a1<a2, alternatively, if a1=0, flow measurement circuit 12
Electric current not in preset range, i.e. the electric current of flow measurement electric current 12 be more than a2, now control motor 12 and invert.Wherein,
Setting value in the utility model embodiment is above-mentioned a2。
Specifically, above-described embodiment is by increasing auto-reverse function on cooking machine, efficiently avoid existing
Normal juice machine when stall occurs, can only stop manually invert just can be properly functioning drawback, it is achieved that material
Reason machine can be auto-reverse when there is stall so that consumer in use need not manually invert again, thus not
Only simplify occupation mode, also enhance the intelligence sense of machine.
It should be noted that the pattern that the cooking machine in above-described embodiment typically uses motor to rotate forward when normal work,
And under co-rotating mode, the electric motor loop electric current of cooking machine is less, and when stall occurs suddenly, in electric motor loop
Electric current can become the big namely above-mentioned electric current flowing through flow measurement circuit 12 and can gradually rise, when this electric current sets more than a certain
During definite value, then judging that stall phenomenon occurs in cooking machine, now control chip 16 can accurately know this by detecting electric current
The motor rotation situation of cooking machine, thus control motor reversal.
Alternatively, the cooking machine in above-described embodiment can also be opened by controlling master control when judging cooking machine stall
Close SW1 and be automatically switched to reversing mode from co-rotating mode.
Cooking machine in above-described embodiment can be Normal juice machine.
In an optional embodiment, flow measurement circuit 12 may include that current sense resistor R1, the first end and material
The zero line of the AC power of reason machine connects, and the second end is connected with motor 14；The detection signal input part of control chip and electricity
First end of stream detection resistance R1 connects.
Wherein, when motor 14 rotates forward, second end of current sense resistor R1 is connected with the first end of motor 14；
When motor 14 inverts, second end of current sense resistor R1 is connected with the first end of motor 14.
By above-described embodiment, owing to current sense resistor and motor are connected in electric motor loop, can be by inspection
Surveying the dividing potential drop effect of current resistor, when stall occurs in motor, the resistance of motor can reduce, the electric current in electric motor loop
Can raise, the electric current in this electric motor loop can be known by detecting the voltage of the first end of this current sense resistor,
Such that it is able to detect the working order of motor according to the size of electric current, it is achieved in accurate testing circuit loop electric current and
The effect of motor ruuning situation.
Alternatively, this control circuit can also include: drives assembly 13, respectively AC power and the motor with cooking machine
14 connect；The control signal output of control chip 16 is connected with the control end driving assembly 13, drives assembly 13
Under the control of control chip 16, motor 14 is driven to invert.
In the above-described embodiments, can current value in flow measurement electric circuit inspection to electric motor loop more than the situation of setting value
Under, drive the reversion of motor by driving assembly, it is possible to achieve control chip effectively controls the effect of motor reversal.
Further, the driving assembly 13 in above-described embodiment may include that the first triode Q1, grounded emitter,
Base stage is connected with the control signal output of control chip 16；First relay K 1, the first end of coil and the one or three
The colelctor electrode of pole pipe Q1 connects, and the second end of coil connects with the first dc source, the of the first contact and motor 14
Two ends connect, and the second contact is connected with the live wire of AC power, and the 3rd contact is connected with the zero line of AC power；Second
Triode Q2, grounded emitter, base stage is connected with the control signal output of control chip 16；Second relay K 2,
The colelctor electrode of the first end of coil and the second triode Q2 connects, and the second end of coil and the second dc source connect,
First contact is connected with the first end of motor 14, and the second contact is connected with the zero line of AC power, the 3rd contact with exchange
The live wire of power supply connects.
By above-described embodiment, can in the case that control chip gets the electric current in electric motor loop more than setting value,
By controlling the on or off of the first triode and the second triode, further drive the first relay and second
The position of the contact of relay, so that the both positive and negative polarity at the two ends of motor changes, it is achieved that automatic control motor is rotating forward
The effect of reversion during stall.
Still optionally further, the driving assembly in above-mentioned alternative embodiment can also include: the first diode D1, negative pole
Being connected with the first end of the coil of the first relay K 1, the second end of the coil of positive pole and the first relay K 1 connects；
Second diode D2, the first end of the coil of negative pole and the second relay K 2 connects, positive pole and the second relay K 2
Coil second end connect.
By above-described embodiment, by the coils from parallel connection of coils of the first diode and the first relay, by the second diode and second
The coils from parallel connection of coils of relay, it is possible to achieve be effectively protected the effect of diode.
Preferably, the first dc source in above-described embodiment and the second dc source are same dc source.
Further, for providing galvanic current energy to motor, assembly is driven can to pass through rectification circuit and alternating current
The zero line in source and live wire connect.
Rectification circuit in above-described embodiment can be bridge rectifier.
In an optional embodiment, this control circuit may include that master switch 15, with control chip 16 even
Connect, for inputting forward or reverse instruction to control chip 16.
Below in conjunction with Fig. 3, an optional cooking machine control circuit is introduced.
Fig. 3 is the connection signal of the control circuit that a kind of optional cooking machine according to the utility model embodiment rotates forward
Figure；Fig. 4 is the connection diagram of the control circuit of a kind of optional cooking machine reversion according to the utility model embodiment,
As shown in Figure 3 and Figure 4, this control circuit include Switching Power Supply, flow measurement circuit 12 (including current sense resistor R1),
The 14th, control chip the 16th, motor drives assembly 13, wherein, drive assembly 13 include the first triode Q1, second
Triode Q2, the first relay K 1 (including the 1st, the 2nd, the 3rd contact 3, the second contact, coil the 45th, the first contact),
Second relay K 2 (including the 1st, the 2nd, the 3rd contact 3, the second contact, coil the 54th, the first contact), the first diode
D1, the second diode D2, rectifier bridge DB1 and master switch 15 (i.e. master switch SW1).
Above-mentioned Switching Power Supply is used for being converted to the alternating current of AC power direct current, and uses direct current to be control chip
Direct-current working volts are provided.
Specifically, as it is shown on figure 3, current sense resistor R1 in the flow measurement circuit 12 of the control circuit of this cooking machine
The first end be connected with the zero line N of the AC power of cooking machine, second end of current sense resistor R1 and motor 14
One end connects, the second end ground connection of this current sense resistor R1, the input of this control chip 16 and flow measurement circuit 12
In current sense resistor R1 first end A connect；Motor 14 in electric motor loop with flow measurement circuit 12 company of series connection
Connecing, control chip 16 is connected with flow measurement circuit 12 and motor 14 respectively, drive assembly 13 respectively with AC power and
Motor 14 connects；The output of control chip 16 is connected with the control end B driving assembly 13.Drive in assembly 13
The grounded emitter of the first triode Q1, and be connected with the output B of control circuit by resistance R2, the one or three
The base stage of pole pipe Q1 is connected with the output B of control chip 16 by resistance R3；The coil of the first relay K 1
First end 5 of 45 is connected with the colelctor electrode of the first triode Q1, the second end 4 of the coil 45 of the first relay K 1
It is connected with the first dc source (such as-12V), the first contact 1 of the first relay K 1 and the first end of motor 14
M-connects, and the second contact 2 of the first relay K 1 is connected with the live wire L of AC power, the first relay K 1
3rd contact 3 is connected with the zero line N of AC power；The grounded emitter of the second triode Q2, the second triode Q2
Base stage be connected with the output B of control chip 16；First end 5 and second of the coil 54 of the second relay K 2
The colelctor electrode connection of triode Q2, the second end 4 of the coil 54 of the second relay K 2 and the second dc source (as
-12V) connect, the first contact 1 of the second relay K 2 is connected with the second end M+ of motor 14, the second relay
Second contact 2 of K2 is connected with the zero line N of AC power, the 3rd contact 3 of the second relay K 2 and AC power
Live wire L connect.Drive the of the negative pole of the first diode D1 of assembly 13 and the coil 45 of the first relay K 1
One end 4 connects, and the second end 5 of the positive pole of the first diode D1 and the coil 45 of the first relay K 1 connects；The
First end 5 of the coil 54 of the negative pole of two diode D2 and the second relay K 2 connects, the second diode D2's
Second end 4 of the coil 54 of positive pole and the second relay K 2 connects.Assembly 13 is driven to pass through rectifier bridge DB1 and friendship
The zero line of stream power supply and live wire connect.The master switch SW1 of control circuit is connected with control chip 16, when master control is opened
When pass SW1 is connected with the KEY1 end of control chip 16, control chip 16 sends the instruction that control motor rotates forward, also
I.e. C end represents motor and rotates forward；When master switch SW1 is connected with the KEY2 end of control chip 16, control chip
16 send the instructions that control motor 14 inverts, namely D end represents motor reversal.
The first dc source in above-described embodiment and the second dc source are same dc source.
Fig. 5 is the workflow diagram of the control circuit of a kind of optional cooking machine according to the utility model embodiment, as
Shown in Fig. 5, the workflow of this control circuit specifically includes following steps:
Step S501, complete machine powering.
Step S502, it is judged that whether the rotating instruction of master switch SW1 indicates rotating forward.
Alternatively, in control circuit figure as shown in Figure 3, after complete machine powering, control chip 16 detects master control and opens
Close the state of SW1, when SW1 pushes KEY1 at C, then judge the rotating instruction of master switch SW1
Instruction rotates forward, i.e. judged result is yes, step S503, and control motor rotates forward；When SW1 pushes KEY2 at D
When, then judge that the rotating instruction of master switch SW1 is not that instruction rotates forward, i.e. judged result is no, step
S504, controls motor reversal, and terminates reversion after the time that user sets, and motor quits work.
Step S505, it is judged that whether stall occurs during rotating forward.
This control circuit adds survey on the basis of the cooking machine control circuit that general control motor rotates forward or inverts
Current circuit and a kind of auto-reverse control mode, concrete control principle is as follows:
Judge whether motor occurs in that stall when rotating forward by the size of current in the electric motor loop that flow measurement circuit gathers
Phenomenon, if judging, there is the phenomenon of stall when rotating forward in motor, i.e. judged result is yes, then step S506,
Control motor reversal preset duration；If after reversion preset duration, cooking machine recovers properly functioning, then step
S507, control cooking machine continues to rotate forward, until terminating.
Preferably, after reversion preset duration, if cooking machine does not recovers normally to rotate forward operation, stall phenomenon still occurs,
Then return step S506, control motor reversal preset duration；If judging, there is not stall when rotating forward in motor
Phenomenon, i.e. judged result are no, then step S507, and control motor rotates forward, until terminating after the time of one end.
Further, the operation principle to cooking machine is carried out in conjunction with a kind of optional control circuit figure shown in Fig. 3 and Fig. 4
Explain:
When master switch SW1 pushes at C, control chip 16 can control at the control end B driving assembly 13
Voltage be high level, now the first triode Q1, the second triode Q2 cut-off, the first relay K the 1st, second
Relay K 2 is failure to actuate, and keeps this state, the second contact 2 He of the i.e. first relay K 1 and the second relay K 2
First contact 1 is in the state of connection.Electric current enters from the L end of AC power, and 1 pin through rectifier bridge DB1 enters
Enter, flow out from 2 pin of DB1, enter motor 14 through the second contact 2 of the first relay K 1 and the first contact 1
The second end M+.Flow out from the first end M-of motor 14 through the first contact 1 of the second relay K 2 and the second contact
4 pin of 2 inflow rectifier bridge DB1, the resistance R1 of 3 pin of rectified bridge DB1 and detection electric current flows into AC power
N.Motor 14 maintains the state rotating forward.After motor 14 operating, electric current flows through current sense resistor R1, due to circuit
Detection resistance R1 voltage divide function, the voltage at first end of current sense resistor R1 can be determined by the size of electric current.As
Shown in Fig. 4, when the electric current through current sense resistor R1 is more than setting value, control chip 16 then can judge motor
The state of 14 stall, then at once control control chip control signal output B place (namely driving assembly control
End processed) voltage be low level, the first triode Q1 and the second triode Q2 conducting, the first relay K 1 He
Second relay K 2 is all by the first original contact 1 with the second contact 2 contacts, the first contact 1 and the 3rd contact 3
Disconnect state, become the first contact 1 and the second contact 2 disconnects, the first contact 1 and the 3rd contact 3 contact shape
State；Then electric current flows into through the first end M-of motor 14, flows out from the second end M+ of motor 14, and motor 14 leaves
Begin to invert preset duration (such as 3 seconds).Allowing the fruit netted in empty bucket spue a part of, then control chip 16 is in control
The voltage of B point, makes motor 14 properly functioning.
Control chip 16 in above-described embodiment can be controlled the rotation side of motor 14 by exporting low and high level signal
To, for example, control chip 16 is when exporting high level signal, and motor 14 rotates forward, and when output low level signal,
Motor 14 inverts.Preferably, control chip 16 can be when motor 14 stall, when control motor 14 reversion is preset
Long, then control motor 14 again and recover to rotate forward.
In an optional embodiment, as shown in Figure 6, control chip 16 may include that comparator 161 and signal
Output port 163, wherein, comparator 161, it is connected with flow measurement circuit 12, at the electricity flowing through flow measurement circuit 12
Stream, not when preset range, generates low level signal；Signal output port 163, is connected with comparator 161, is used for
Output low level signal in preset duration.
By above-described embodiment, the size of the electric current in electric motor loop can be detected by comparator and judge that motor is
No there is stall phenomenon, and after judging that stall phenomenon occurs in motor, by signal output interface, in preset duration
Interior output low level signal, then exports normal high level signal, it is achieved that promptly and accurately judge the stall of motor again
Phenomenon, has reached the properly functioning effect after ensureing the elimination of stall phenomenon simultaneously, has improve the Experience Degree of user.
According to the another aspect of the utility model embodiment, additionally providing a kind of cooking machine, this cooking machine includes above-mentioned
The control circuit of the cooking machine in an embodiment of anticipating.
Use the utility model, detected the electric current in electric motor loop by flow measurement circuit 12, and at this electric current detecting
When value is more than setting value, control chip 16 controls motor 14 and inverts.By above-described embodiment, can be according to detecting
The size of electric motor loop electric current judge whether motor occurs stall, and in the case of judging motor generation stall,
Automatic control motor inverts, and manually inverts compared to needing the needs when stall occurs in cooking machine rotating forward in prior art
Situation, it is achieved that improve the effect of cooking machine degree easy to use, cannot be auto-reverse when solving existing cooking machine stall
Problem.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description to each embodiment all emphasizes particularly on different fields, in certain embodiment
There is no the part describing in detail, may refer to the associated description of other embodiments.
The claimed calculator of the utility model and each assembly constituting this processor are all that one has determination shape
Shape, the entity products constructing and occupying certain space.For example, flow measurement circuit, detection device, microprocessor, Zi Chu
Reason device etc. is all computer equipment, terminal or the server that with independent operating, can have particular hardware structure.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these
Improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. the control circuit of a cooking machine, it is characterised in that include:
Flow measurement circuit (12), is arranged in electric motor loop；
Motor (14), is connected with described flow measurement circuit (12) in described electric motor loop；
Control chip (16), it is connected with described flow measurement circuit (12) and described motor (14) respectively, for when the electric current flowing through described flow measurement circuit (12) being detected not in preset range, control described motor (14) reversion.
2. control circuit according to claim 1, it is characterised in that described flow measurement circuit (12) includes:
Current sense resistor R1, the first end is connected with the zero line of the AC power of cooking machine, and the second end is connected with described motor (14)；
The detection signal input part of described control chip (16) is connected with first end of described current sense resistor R1.
3. control circuit according to claim 2, it is characterised in that when described motor (14) rotates forward, second end of described current sense resistor R1 is connected with the first end of described motor (14)；When described motor (14) inverts, second end of described current sense resistor R1 is connected with the first end of described motor (14).
4. control circuit according to claim 1, it is characterised in that described control circuit also includes:
Drive assembly (13), be connected with the AC power of cooking machine and described motor (14) respectively；
The control signal output of described control chip (16) is connected with the control end of described driving assembly (13), described driving assembly (13), under the control of described control chip (16), drives described motor (14) to invert.
5. control circuit according to claim 4, it is characterised in that described driving assembly (13) includes:
First triode Q1, grounded emitter, base stage is connected with the control signal output of described control chip (16)；
First relay K 1, first end of coil is connected with the colelctor electrode of described first triode Q1, second end of coil and the first dc source connect, first contact is connected with the second end of described motor (14), second contact is connected with the live wire of described AC power, and the 3rd contact is connected with the zero line of described AC power；
Second triode Q2, grounded emitter, base stage is connected with the control signal output of described control chip (16)；
Second relay K 2, first end of coil is connected with the colelctor electrode of described second triode Q2, second end of coil and the second dc source connect, first contact is connected with the first end of described motor (14), second contact is connected with the zero line of described AC power, and the 3rd contact is connected with the live wire of described AC power.
6. control circuit according to claim 5, it is characterised in that described driving assembly (13) also includes:
First diode D1, the first end of the coil with described first relay K 1 for the negative pole is connected, and the second end of the coil with described first relay K 1 for the positive pole is connected；
Second diode D2, the first end of the coil with described second relay K 2 for the negative pole is connected, and the second end of the coil with described second relay K 2 for the positive pole is connected.
7. control circuit according to claim 4, it is characterised in that described driving assembly (13) is connected with zero line and the live wire of described AC power by rectification circuit.
8. control circuit according to claim 1, it is characterised in that described control chip (16) includes:
Comparator (161), is connected with described flow measurement circuit (12), for when flowing through the electric current of described flow measurement circuit (12) not in preset range, generates low level signal；
Signal output port (163), is connected with described comparator (161), for exporting described low level signal in preset duration.
9. control circuit according to claim 1, it is characterised in that described control circuit includes:
Master switch (15), is connected with described control chip (16), for described control chip (16) input forward or reverse instruction.
10. a cooking machine, it is characterised in that include the control circuit of the cooking machine described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411523.XU CN205620825U (en) | 2016-05-06 | 2016-05-06 | Food processor and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620411523.XU CN205620825U (en) | 2016-05-06 | 2016-05-06 | Food processor and control circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205620825U true CN205620825U (en) | 2016-10-05 |
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ID=57025990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620411523.XU Active CN205620825U (en) | 2016-05-06 | 2016-05-06 | Food processor and control circuit thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004870A (en) * | 2017-11-09 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | Anti-jamming when stirring, anti-overflow brushless DC motor control system and method |
| CN111342740A (en) * | 2020-04-14 | 2020-06-26 | 姜武刚 | Motor locked-rotor control circuit and control method |
| CN112289619A (en) * | 2020-10-21 | 2021-01-29 | 山东泰开智能配电有限公司 | Control device for grounding switch |
-
2016
- 2016-05-06 CN CN201620411523.XU patent/CN205620825U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004870A (en) * | 2017-11-09 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | Anti-jamming when stirring, anti-overflow brushless DC motor control system and method |
| CN111342740A (en) * | 2020-04-14 | 2020-06-26 | 姜武刚 | Motor locked-rotor control circuit and control method |
| CN112289619A (en) * | 2020-10-21 | 2021-01-29 | 山东泰开智能配电有限公司 | Control device for grounding switch |
| CN112289619B (en) * | 2020-10-21 | 2023-09-15 | 山东泰开智能配电有限公司 | Control device for grounding switch |
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