CN209313758U - Motor rotation blockage control circuit for cooking machine - Google Patents
Motor rotation blockage control circuit for cooking machine Download PDFInfo
- Publication number
- CN209313758U CN209313758U CN201821888494.1U CN201821888494U CN209313758U CN 209313758 U CN209313758 U CN 209313758U CN 201821888494 U CN201821888494 U CN 201821888494U CN 209313758 U CN209313758 U CN 209313758U
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- normally opened
- connect
- button
- time relay
- contactor
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Abstract
The utility model relates to a kind of motor rotation blockage control circuits for cooking machine, solve the deficiencies in the prior art, technical solution are as follows: cooking motor is powered by power supply unit, said supply unit is connect by a pair of of normally opened contact of contactor KM1 with cooking motor forward direction, a pair of of the normally opened contact and cooking motor Opposite direction connection that said supply unit passes through contactor KM2, high temperature detection switch circuit is configured on the cooking motor, the anode of power supply unit is connect with the first end of normally closed button SB1, the second end of normally closed button SB1 is connect with the first end of normally opened button SB2, the first end of normally opened button SB2 is connect by the normally opened delay break contact of time relay KT1 with the second end of normally opened button SB2, the normally opened delay that the first end of normally opened button SB2 also passes through time relay KT2 disconnects Contact is connect with the second end of normally opened button SB2.
Description
Technical field
The utility model relates to a kind of motor rotation blockage control circuits, and in particular to a kind of motor rotation blockage control for cooking machine
Circuit processed.
Background technique
Cooking machine is a kind of common cooking apparatus, and mill soya-bean milk is bought fruit juice etc. and can be simply done by user, but
It is often to put excessive fruits and vegetables into cup body since consumer is when using household cooking machine, cause cooking machine in starting wink
Between, the cutter arranged in cup is embedded in vegetables and fruits, and motor rotation blockage is easy to burn out entire cooking machine when motor rotation blockage is too long, causes electric appliance
Damage.Meanwhile being protected if one stall of motor, the output of torsion is cut off, the customer experience of product is with regard to far short of what is expected at this time.Therefore
From the aspect of comprehensive two, a kind of motor rotation blockage control circuit for cooking machine is designed.
A kind of motor rotation blockage be motor when revolving speed is 0 turn still situation of output torque, it is typically mechanical or
Artificial.Since motor load is excessive, the mechanical breakdown of dragging, bearing damage sweeps motor caused by due to hall etc. to start
Or the phenomenon that stopping operating.Power factor is extremely low when motor rotation blockage, and the electric current (claiming locked rotor current) when stall reaches as high as specified
7 times of electric current, time slightly length will burn out motor.Motor rotation blockage is easy to appear biggish temperature rise, Ke Yiyou since electric current is excessively high
Thermistor carries out detection sampling.
Utility model content
Utility model aims to solve the above-mentioned prior arts to exist since consumer is when using household cooking machine,
It often puts excessive fruits and vegetables into cup body, causes cooking machine in starting moment, arrange the cutter in cup and be embedded in vegetables and fruits, motor is stifled
Turn, is easy to burn out entire cooking machine when motor rotation blockage is too long, electric appliance is caused to damage.Meanwhile being protected if one stall of motor, it cuts
The output of disconnected torsion, the customer experience of product provides a kind of motor rotation blockage control for cooking machine with regard to problem far short of what is expected at this time
Circuit processed.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of motor rotation blockage control for cooking machine
Circuit processed, cooking motor are powered by power supply unit, a pair of of the normally opened contact and cooking electricity that said supply unit passes through contactor KM1
The connection of machine forward direction, a pair of of normally opened contact and cooking motor Opposite direction connection of the said supply unit by contactor KM2, the cooking
High temperature detection switch circuit is configured on motor, the anode of power supply unit is connect with the first end of normally closed button SB1, normally closed button
The second end of SB1 is connect with the first end of normally opened button SB2, and the first end of normally opened button SB2 passes through the normal of time relay KT1
It opens delay break contact to connect with the second end of normally opened button SB2, the first end of normally opened button SB2 also passes through the time relay
The normally opened delay break contact of KT2 is connect with the second end of normally opened button SB2；
The second end of normally opened button SB2 is also connect with the first end of normally opened button SB3, and the first of the normally opened button SB3
End is connect by the conducting switch of high temperature detection switch circuit with the first end of the coil of time relay KT3, the time relay
The cathode of the second end connection power supply unit of the coil of KT3, the second end of the normally opened button SB3 pass through time relay KT2
Coil connection power supply unit cathode, the second end of normally opened button SB3 connects power supply unit by the coil of contactor KM2
The normally opened delay break contact first end of cathode, time relay KT3 is connect with the first end of normally opened button SB3, time relay
The normally opened delay break contact second end of device KT3 is connect with the second end of normally opened button SB3, the first end of contactor KM1 coil
It is connect by a normally-closed contact of contactor KM2 with the second end of normally opened button SB2, the second end of contactor KM1 coil connects
The cathode of power supply unit is connect, the first end of time relay KT1 is connect with the first end of contactor KM1 coil, the time relay
The cathode of the second end connection power supply unit of KT1.Following steps are executed when utility model works:
Step 1, normally opened button SB2 closure, time relay KT1 obtain electric, normally opened button SB2's self-locking, contactor KM1
Must be electric,
Step 2, cooking motor rotates forward starting, if stall occurs, cooking motor temperature is increased, and thermistor temp is synchronous
It increases, divider resistance resistance value becomes smaller, and light-emitting diode luminance is more than threshold value in optocoupler U1, between the conduction terminal of optocoupler U1 mutually
Conducting, at this point, time relay KT3 obtain it is electric；
Step 3, contactor KM2 obtain electric, the normally-closed contact disconnection of contactor KM2, contactor KM1 power loss, contactor KM2
Normally opened contact closure, arrange motor reversal, by time relay KT2 obtain it is electric provide for normally opened button SB2 it is self-locking；
Step 4, cooking motor rotation blockage release, and the temperature of thermistor RT1 reduces, light-emitting diode luminance in optocoupler U1
Lower than threshold value, mutually disconnected between the conduction terminal of optocoupler U1, the contact of time relay KT3, which is delayed, to be disconnected, contactor KM2 and when
Between relay KT2 power loss, contactor KM1 normally-closed contact closure, cooking motor rotate forward.
If normally opened button SB2 can directly be pressed by carrying out inverting manually, and contactor KM2 is obtained when arranging motor work
The normally-closed contact of electricity, contactor KM2 disconnects, contactor KM1 power loss, the normally opened contact closure of contactor KM2, and cooking motor is anti-
Turn, by time relay KT2 obtain it is electric provide for normally opened button SB2 it is self-locking；
After unclamping normally opened button SB2, the contact of time relay KT3, which is delayed, to be disconnected, contactor KM2 and the time relay
KT2 power loss, the normally-closed contact closure of contactor KM1, cooking motor restore to rotate forward.
Preferably, high temperature detection switch circuit includes thermistor RT1, resistance R1, resistance R2 and optocoupler U1, the heat
One end of quick resistance RT1 connects digital power, and the second end of the thermistor RT1 is grounded by resistance R1, the temperature-sensitive electricity
The second end of resistance RT1 is connect by resistance R2 with the input terminal of optocoupler U1, and the output end ground connection of optocoupler U1, the first of optocoupler U1 is led
Go side is connect with the first end of normally opened button SB3, the first end of the coil of the second conduction terminal and time relay KT3 of optocoupler U1
Connection, thermistor RT1 are attached on cooking motor.
Preferably, the thermistor RT1 is the thermistor that resistance value declines after temperature increases.
The substantial effect of the utility model is: the utility model has taken into account rotation-clogging protection and user experience, once occur
Stall inverts-rotates forward duplicate mode using the cooking motor short time to solve the problems, such as fruits and vegetables stall, better user experience.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model is made further specifically
It is bright.
Embodiment 1:
A kind of motor rotation blockage control circuit (referring to attached drawing 1) for cooking machine, cooking motor are powered by power supply unit, institute
It states power supply unit to connect by a pair of of normally opened contact of contactor KM1 with cooking motor forward direction, said supply unit passes through contact
A pair of of normally opened contact of device KM2 and cooking motor Opposite direction connection are configured with high temperature detection switch circuit, confession on the cooking motor
The anode of electric unit is connect with the first end of normally closed button SB1, and the first of the second end of normally closed button SB1 and normally opened button SB2
End connection, the first end of normally opened button SB2 is by the normally opened delay break contact of time relay KT1 with normally opened button SB2's
Second end connection, the first end of normally opened button SB2 also pass through the normally opened delay break contact and normally opened button of time relay KT2
The second end of SB2 connects；
The second end of normally opened button SB2 is also connect with the first end of normally opened button SB3, and the first of the normally opened button SB3
End is connect by the conducting switch of high temperature detection switch circuit with the first end of the coil of time relay KT3, the time relay
The cathode of the second end connection power supply unit of the coil of KT3, the second end of the normally opened button SB3 pass through time relay KT2
Coil connection power supply unit cathode, the second end of normally opened button SB3 connects power supply unit by the coil of contactor KM2
The normally opened delay break contact first end of cathode, time relay KT3 is connect with the first end of normally opened button SB3, time relay
The normally opened delay break contact second end of device KT3 is connect with the second end of normally opened button SB3, the first end of contactor KM1 coil
It is connect by a normally-closed contact of contactor KM2 with the second end of normally opened button SB2, the second end of contactor KM1 coil connects
The cathode of power supply unit is connect, the first end of time relay KT1 is connect with the first end of contactor KM1 coil, the time relay
The cathode of the second end connection power supply unit of KT1.
High temperature detection switch circuit includes thermistor RT1, resistance R1, resistance R2 and optocoupler U1, the thermistor RT1
One end connect digital power, the second end of the thermistor RT1 is grounded by resistance R1, the of the thermistor RT1
Two ends connects by resistance R2 with the input terminal of optocoupler U1, the output end ground connection of optocoupler U1, the first conduction terminal of optocoupler U1 with it is normal
The first end connection of button SB3 is opened, the second conduction terminal of optocoupler U1 is connect with the first end of the coil of time relay KT3, heat
Quick resistance RT1 is attached on cooking motor.
The thermistor RT1 is the thermistor that resistance value declines after temperature increases.
The present embodiment executes following steps at work:
Step 1, normally opened button SB2 closure, time relay KT1 obtain electric, normally opened button SB2's self-locking, contactor KM1
Must be electric,
Step 2, cooking motor rotates forward starting, if stall occurs, cooking motor temperature is increased, and thermistor temp is synchronous
It increases, divider resistance resistance value becomes smaller, and light-emitting diode luminance is more than threshold value in optocoupler U1, between the conduction terminal of optocoupler U1 mutually
Conducting, at this point, time relay KT3 obtain it is electric；
Step 3, contactor KM2 obtain electric, the normally-closed contact disconnection of contactor KM2, contactor KM1 power loss, contactor KM2
Normally opened contact closure, arrange motor reversal, by time relay KT2 obtain it is electric provide for normally opened button SB2 it is self-locking；
Step 4, cooking motor rotation blockage release, and the temperature of thermistor RT1 reduces, light-emitting diode luminance in optocoupler U1
Lower than threshold value, mutually disconnected between the conduction terminal of optocoupler U1, the contact of time relay KT3, which is delayed, to be disconnected, contactor KM2 and when
Between relay KT2 power loss, contactor KM1 normally-closed contact closure, cooking motor rotate forward.
If normally opened button SB2 can directly be pressed by carrying out inverting manually, and contactor KM2 is obtained when arranging motor work
The normally-closed contact of electricity, contactor KM2 disconnects, contactor KM1 power loss, the normally opened contact closure of contactor KM2, and cooking motor is anti-
Turn, by time relay KT2 obtain it is electric provide for normally opened button SB2 it is self-locking；
After unclamping normally opened button SB2, the contact of time relay KT3, which is delayed, to be disconnected, contactor KM2 and the time relay
KT2 power loss, the normally-closed contact closure of contactor KM1, cooking motor restore to rotate forward.
The present embodiment has taken into account rotation-clogging protection and user experience, once there is stall using cooking motor short time reversion-
Duplicate mode is rotated forward to solve the problems, such as fruits and vegetables stall, better user experience.
Embodiment described above is a kind of preferable scheme of the utility model, is not made to the utility model any
Formal limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (3)
1. a kind of motor rotation blockage control circuit for cooking machine, it is characterised in that: cooking motor is powered by power supply unit, described
Power supply unit is connect by a pair of of normally opened contact of contactor KM1 with cooking motor forward direction, and said supply unit passes through contactor
A pair of of normally opened contact of KM2 and cooking motor Opposite direction connection are configured with high temperature detection switch circuit on the cooking motor, power
The anode of unit is connect with the first end of normally closed button SB1, the first end of the second end of normally closed button SB1 and normally opened button SB2
Connection, the first end of normally opened button SB2 pass through the normally opened delay break contact of time relay KT1 and normally opened button SB2 the
The connection of two ends, the first end of normally opened button SB2 also pass through the normally opened delay break contact and normally opened button of time relay KT2
The second end of SB2 connects；
The second end of normally opened button SB2 is also connect with the first end of normally opened button SB3, and the first end of the normally opened button SB3 is logical
The conducting switch that excessively high temperature detector surveys switching circuit is connect with the first end of the coil of time relay KT3, time relay KT3's
The cathode of the second end connection power supply unit of coil, the second end of the normally opened button SB3 pass through the coil of time relay KT2
The cathode of power supply unit is connected, the second end of normally opened button SB3 connects the cathode of power supply unit by the coil of contactor KM2,
The normally opened delay break contact first end of time relay KT3 is connect with the first end of normally opened button SB3, time relay KT3
Normally opened delay break contact second end connect with the second end of normally opened button SB3, the first end of contactor KM1 coil is by connecing
A normally-closed contact of tentaculum KM2 is connect with the second end of normally opened button SB2, and the second end of contactor KM1 coil connects power supply
The first end of the cathode of unit, time relay KT1 is connect with the first end of contactor KM1 coil, and the of time relay KT1
The cathode of two ends connection power supply unit.
2. the motor rotation blockage control circuit according to claim 1 for cooking machine, it is characterised in that: high temperature detection switch
Circuit includes one end connection digital power of thermistor RT1, resistance R1, resistance R2 and optocoupler U1, the thermistor RT1,
The second end of the thermistor RT1 is grounded by resistance R1, and the second end of the thermistor RT1 passes through resistance R2 and optocoupler
The input terminal of U1 connects, the output end ground connection of optocoupler U1, and the first end of the first conduction terminal of optocoupler U1 and normally opened button SB3 connect
It connects, the second conduction terminal of optocoupler U1 is connect with the first end of the coil of time relay KT3, and thermistor RT1 is attached to cooking
On motor.
3. the motor rotation blockage control circuit according to claim 2 for cooking machine, it is characterised in that: the thermistor
RT1 is the thermistor that resistance value declines after temperature increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821888494.1U CN209313758U (en) | 2018-11-16 | 2018-11-16 | Motor rotation blockage control circuit for cooking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821888494.1U CN209313758U (en) | 2018-11-16 | 2018-11-16 | Motor rotation blockage control circuit for cooking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209313758U true CN209313758U (en) | 2019-08-27 |
Family
ID=67673282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821888494.1U Withdrawn - After Issue CN209313758U (en) | 2018-11-16 | 2018-11-16 | Motor rotation blockage control circuit for cooking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209313758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217748A (en) * | 2018-11-16 | 2019-01-15 | 横店集团英洛华电气有限公司 | Motor rotation blockage control circuit and its control method for cooking machine |
-
2018
- 2018-11-16 CN CN201821888494.1U patent/CN209313758U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217748A (en) * | 2018-11-16 | 2019-01-15 | 横店集团英洛华电气有限公司 | Motor rotation blockage control circuit and its control method for cooking machine |
| CN109217748B (en) * | 2018-11-16 | 2023-10-13 | 浙江联宜电机有限公司 | Motor locked rotor control circuit for food processor and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190827 Effective date of abandoning: 20231013 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190827 Effective date of abandoning: 20231013 |