CN109347401A - Motor speed control device, motor and food processing equipment - Google Patents
Motor speed control device, motor and food processing equipment Download PDFInfo
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- CN109347401A CN109347401A CN201811326753.6A CN201811326753A CN109347401A CN 109347401 A CN109347401 A CN 109347401A CN 201811326753 A CN201811326753 A CN 201811326753A CN 109347401 A CN109347401 A CN 109347401A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
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- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to a kind of motor speed control device, motor and food processing equipments, wherein motor speed control device includes: speed feedback circuit, including Speed sensing unit and adjustable resistance, Speed sensing unit is to be adjusted the resistance value of adjustable resistance according to the current rotating speed of motor；Rotation speed control loop, including first capacitor, bilateral diode and controlled tr tube, first capacitor and adjustable resistance are connected in series and have first node, first node is connected with one end of bilateral diode, the other end of bilateral diode is connected with the control terminal of controlled tr tube, when motor works on power, power supply is charged by motor and adjustable resistance to first capacitor, and bilateral diode and controlled tr tube are carried out on or off under the charging voltage of first capacitor and be adjusted with the revolving speed to motor.Thus, it is possible to realize accurately controlling for motor speed, and structure is simple, assembles simple, at low cost, reliable performance and is not necessarily to manual synchronizing.
Description
Technical field
The present invention relates to motor control technology fields, more particularly to a kind of motor speed control device, motor and food
Process equipment.
Background technique
In general, when motor load differs greatly, the revolving speed of motor will affect, such as unloaded or when carrying less, need to drop
The revolving speed of low motor, and under case of heavy load, it needs to improve the revolving speed of motor, the revolving speed of motor is controlled relatively reasonable
In range.
In the related technology, the revolving speed control of motor is realized by two ways.One is what is generated using motor rotation
Centrifugal force switches switch by machine driving, and to realize the selection of speed of motor, but which is in the presence of structure is complicated, dress
It needs to be corrected every motor when accessory is more, material cost is high, control precision is low and assembly to lead to high labor cost
Problem；Another kind is to realize to control the revolving speed of motor using microprocessor, but which equally exists problem at high cost.
Therefore it provides a kind of motor speed control program assembled simple, at low cost, reliable performance and be not necessarily to manual synchronizing
It is a technical problem to be solved urgently.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of simple, the at low cost, reliable performance of assembly and be not necessarily to
The motor speed control device of manual synchronizing.
A kind of motor speed control device, the motor speed control device include:
Speed feedback circuit, the speed feedback circuit include Speed sensing unit and adjustable resistance, the Speed sensing
Unit is to be adjusted the resistance value of the adjustable resistance according to the current rotating speed of motor；
Rotation speed control loop, the rotation speed control loop include first capacitor, bilateral diode and controlled tr tube, described
First capacitor and the adjustable resistance are connected in series and have first node, the first node and the one of the bilateral diode
End is connected, and the other end of the bilateral diode is connected with the control terminal of the controlled tr tube, wherein powers in the motor
When work, power supply gives the first capacitor to charge by the motor and the adjustable resistance, the bilateral diode and
The controlled tr tube is carried out on or off under the charging voltage of the first capacitor and is carried out with the revolving speed to the motor
It adjusts.
The Speed sensing unit includes inductance coil in one of the embodiments, the inductance coil and it is described can
Resistor coupled in parallel connection is adjusted, the inductance coil is to incude the current rotating speed of the motor and export induced current to described adjustable
Resistance.
The Speed sensing unit includes mutual inductor in one of the embodiments, the mutual inductor and the adjustable electric
Resistance is connected in parallel, and the mutual inductor is to incude operating current/operating voltage of the motor and export induced current/induced electricity
It is depressed into the adjustable resistance.
The adjustable resistance is posive temperature coefficient thermistor in one of the embodiments,.
The motor speed control device in one of the embodiments, further include:
Temperature-compensation circuit, the temperature-compensation circuit corresponds to the posive temperature coefficient thermistor setting, to institute
It states posive temperature coefficient thermistor and carries out ambient temperature compensation.
The temperature-compensation circuit includes: in one of the embodiments,
Negative tempperature coefficient thermistor, the negative tempperature coefficient thermistor are connected with the posive temperature coefficient thermistor
Connection.
The motor speed control device in one of the embodiments, further include:
Filter circuit, the filter circuit are arranged between the first node and one end of the bilateral diode, use
It is filtered with the charging voltage to the first capacitor.
The filter circuit includes: C filter circuit, RC filter circuit or LC filtered electrical in one of the embodiments,
Road.
A kind of motor comprising above-mentioned motor speed control device.
A kind of food processing equipment comprising above-mentioned motor.
Above-mentioned motor speed control device, motor and food processing equipment pass through Speed sensing unit working as according to motor
The resistance value of adjustable resistance is adjusted in preceding revolving speed, and power supply is charged by motor and adjustable resistance to first capacitor, two-way
Diode and controlled tr tube are carried out on or off under the charging voltage of first capacitor and are adjusted with the revolving speed to motor,
Thus, it is possible to realize accurately controlling for motor speed, and there is simple structure, simple, the at low cost, reliable performance of assembly and nothing
The advantages of needing manual synchronizing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of motor speed control device in one embodiment；
Fig. 2 is angle of flow schematic diagram of the power supply in every half period in one embodiment；
Fig. 3 a is the structural schematic diagram of motor speed control device in second embodiment；
Fig. 3 b is the structural schematic diagram of motor speed control device in third embodiment；
Fig. 4 is the structural schematic diagram of motor speed control device in the 4th embodiment；
Fig. 5 is the structural schematic diagram of motor speed control device in the 5th embodiment；
Fig. 6 is the structural schematic diagram of motor speed control device in the 6th embodiment；
Fig. 7 is the block diagram of motor in one embodiment；And
Fig. 8 is the block diagram of one embodiment food processing device.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of above embodiments can carry out arbitrary group
It closes, for simplicity of description, combination not all possible to each technical characteristic in above-described embodiment is all described, however,
As long as there is no contradiction in the combination of these technical features, all should be considered as described in this specification.
Fig. 1 is the structural schematic diagram of motor speed control device in one embodiment, as shown in Figure 1, motor speed controls
Device includes: speed feedback circuit 110 and rotation speed control loop 120.
Wherein, speed feedback circuit 110 includes Speed sensing unit 112 and adjustable resistance RT1, Speed sensing unit 112
The resistance value of adjustable resistance RT1 to be adjusted according to the current rotating speed of motor；Rotation speed control loop 120 includes first capacitor
C1, bilateral diode DZ and controlled tr tube SC (such as thyristor), first capacitor C1 are connected in series and have with adjustable resistance RT1
First node J1, first node J1 are connected with one end of bilateral diode DZ, the other end and controllable switch of bilateral diode DZ
The control terminal of pipe SC is connected.When motor M works on power, power supply AC is by motor M and adjustable resistance RT1 to first capacitor
C1 charging, bilateral diode DZ and controlled tr tube SC carry out on or off to electricity under the charging voltage of first capacitor C1
The revolving speed of machine M is adjusted.
Specifically, as shown in Figure 1, electric current is by motor M and adjustable resistance RT1 to the when power supply AC access
One capacitor C1 charging.It is assumed that the trigger voltage of bilateral diode DZ is Vt, the conducting voltage of controlled tr tube SC is Vf, then
When the voltage (i.e. charging voltage) at the both ends first capacitor C1 is less than the absolute value of Vt+Vf, bilateral diode DZ cannot be triggered and be led
Logical, i.e. bilateral diode DZ is in an off state, while controlled tr tube SC is in an off state；When the both ends first capacitor C1
When voltage is greater than or equal to the absolute value of Vt+Vf, bilateral diode DZ is triggered conducting, i.e. bilateral diode DZ is on shape
State, while controlled tr tube SC is in the conductive state.Thus, it is possible to control the angle of flow of the power supply AC in every half period
α, it is specific as shown in Figure 2.
Wherein, when the size of angle of flow α and the voltage at the both ends first capacitor C1 it is related be charged to trigger value Vt+Vf, for example,
The time that the voltage at the both ends first capacitor C1 is charged to trigger value Vt+Vf is shorter, i.e., rate of voltage rise is faster, and angle of flow α is smaller,
Vice versa.And when the capacitance of first capacitor C1 is fixed, the rate of voltage rise at the both ends first capacitor C1 and and adjustable resistance
The resistance value of RT1 is related, and resistance value is smaller, and rate of voltage rise is faster, and vice versa.It therefore, can be by changing adjustable resistance RT1
Resistance value change the rate of voltage rise at the both ends first capacitor C1, and then change the size of angle of flow α.
And the resistance value of adjustable resistance RT1 can the current rotating speed based on motor M adjusted in real time, for example, can pass through
The current rotating speed of induction machine M obtains corresponding voltage or the magnitude of current, and then according to voltage or the magnitude of current to adjustable electric
The resistance value of resistance RT1 is adjusted, to realize the adjusting to angle of flow α.And the size of angle of flow α determines turning for motor M
Speed, for example, angle of flow α is bigger, the power supply loaded on motor M is fewer, so that the revolving speed of motor M is minimized；Angle of flow α
Smaller, the power supply loaded on motor M is more, so that the revolving speed of motor M is improved.Therefore, pass through working as based on motor M
Preceding revolving speed is adjusted the resistance value of adjustable resistance RT1, it can be achieved that adjusting to the rate of voltage rise at the both ends first capacitor C1
Section, and then realize the adjusting to angle of flow α, to realize the adjusting to motor M revolving speed, reach to the control of motor M revolving speed
Purpose.
Specifically, when needing to control motor M work, power supply AC access, electric current passes through motor M and adjustable at this time
Resistance RT1 charges to first capacitor C1, when the voltage at the both ends first capacitor C1 reaches trigger value Vt+Vf, bilateral diode DZ
It is connected with controlled tr tube SC, to control motor M operating.Motor M operating during, Speed sensing unit 112 also according to
The resistance value of adjustable resistance RT1 is adjusted in the current rotating speed of motor M, when the resistance value of adjustable resistance RT1 changes, first
The time that the voltage at the both ends capacitor C1 reaches trigger value Vt+Vf will change therewith, so that bilateral diode DZ and controllably opening
The turn-on time for closing pipe SC changes, so that angle of flow α of the power supply in every half period changes, it is different
Angle of flow α under, motor M have different revolving speeds, to realize effective control of motor M revolving speed.
In above-described embodiment, the resistance value of adjustable resistance is adjusted according to the current rotating speed of motor by Speed sensing unit
Section, power supply are charged by motor and adjustable resistance to first capacitor, and bilateral diode and controlled tr tube are in first capacitor
Charging voltage under carry out on or off be adjusted with the revolving speed to motor, thus, it is possible to realize the accurate control of motor speed
System, and have the advantages that structure is simple, assemble simple, at low cost, reliable performance and without manual synchronizing.
In one embodiment, as shown in Figure 3a, Speed sensing unit 112 include inductance coil L, inductance coil L with can
Adjust resistance RT1 be connected in parallel, inductance coil L to induction machine current rotating speed and export induced current to adjustable resistance RT1.
Wherein, adjustable resistance RT1 can be posive temperature coefficient thermistor.
With reference to shown in Fig. 3 a, speed feedback circuit 110 can be made of inductance coil L and posive temperature coefficient thermistor.?
In practical application, inductance coil L can be implanted into motor M, in this way when motor M works on power, the rotor of motor M is rotated, and is turned
Magnet on son cuts inductance coil L, induced current will be generated on inductance coil L, when induced current is applied to positive temperature coefficient
When on thermistor, induced current is bigger, and the temperature of posive temperature coefficient thermistor is higher, and resistance value is bigger, and vice versa.Cause
This, can realize the adjusting to posive temperature coefficient thermistor resistance value according to the current rotating speed of motor M by inductance coil L, in turn
It realizes the adjusting to the rate of voltage rise at the both ends first capacitor C1, and finally realizes the adjusting to motor M revolving speed, and positive temperature
The current rotating speed of the resistance value and motor M of spending coefficient resistance corresponds, which can really reflect that motor M's works as forward
Speed, thus can guarantee the accuracy of motor M revolving speed control.
In above-described embodiment, change the resistance value of adjustable resistance by the revolving speed of inductance coil induction machine, to change
The rate of voltage rise at first capacitor both ends, and then change the angle of flow of the power supply in every half period, to realize motor
The control of revolving speed.Wherein the resistance value of adjustable resistance and the current rotating speed of motor correspond, which can really reflect motor
Current rotating speed, thus can guarantee the accuracy of revolving speed control, and whole device structure is simple, assembly is simple, is easy to real
It is existing, high reliablity, at low cost and be not necessarily to manual synchronizing.
In one embodiment, as shown in Figure 3b, Speed sensing unit 112 includes mutual inductor T, mutual inductor T and adjustable electric
Resistance RT1 be connected in parallel, mutual inductor T to induction machine M operating current/operating voltage and export induced current/induced voltage
To adjustable resistance RT1.
With reference to shown in Fig. 3 b, speed feedback circuit 110 can be made of mutual inductor T and posive temperature coefficient thermistor.In reality
In the application of border, mutual inductor T can be current transformer or voltage transformer, pass through the primary side of current transformer or voltage transformer
The operating current or operating voltage of induction machine M, with the current rotating speed (current rotating speed and motor of motor M of indirect induction machine M
The operating current or operating voltage of M is in corresponding relationship), and induced electricity is generated on the secondary side of current transformer or voltage transformer
Stream or induced voltage (secondary current or secondary voltage can also be claimed), by the induced current or induced voltage come to positive temperature coefficient
The resistance value of thermistor is adjusted.For example, when induced current or induced voltage are applied on posive temperature coefficient thermistor,
Induced current or induced voltage are bigger, and the temperature of posive temperature coefficient thermistor is higher, and resistance value is bigger, and vice versa.Therefore,
The adjusting to posive temperature coefficient thermistor resistance value, and then realization pair can be realized according to the current rotating speed of motor M by mutual inductor T
The adjusting of the rate of voltage rise at the both ends first capacitor C1, and finally realize the adjusting to motor M revolving speed, and positive temperature coefficient
The resistance value of thermistor and the current rotating speed of motor M correspond, which can really reflect the current rotating speed of motor M, thus
It can guarantee the accuracy of motor M revolving speed control.
In above-described embodiment, change the resistance value of adjustable resistance according to the revolving speed of motor by mutual inductor, to change the
The rate of voltage rise at one capacitor both ends, and then change the angle of flow of the power supply in every half period, to realize that motor turns
The control of speed.Wherein the resistance value of adjustable resistance and the current rotating speed of motor correspond, which can really reflect motor
Current rotating speed, thus can guarantee the accuracy of revolving speed control, and whole device structure is simple, assembly is simple, high reliablity,
It is at low cost and be not necessarily to manual synchronizing.
In one embodiment, as shown in figure 4, rotation speed control loop 120 further includes first resistor R1, first resistor R1 string
It is associated in the charge circuit of first capacitor C1, for example, first resistor R1 can be connected between adjustable resistance RT1 and motor M, it can also
To be connected between first node J1 and adjustable resistance RT1.By to first resistor R1, adjustable resistance RT1 and first capacitor C1
Rational design, the rate of voltage rise at the both ends first capacitor C1 can be made to meet actual demand, so that power supply AC exists
Angle of flow meet demand in every half period, in the reasonable scope by the revolving speed control of motor M.
In one embodiment, as shown in figure 5, motor speed control device further include: temperature-compensation circuit 130, temperature
The corresponding posive temperature coefficient thermistor setting of compensation circuit 130, to carry out environment temperature benefit to posive temperature coefficient thermistor
It repays.
Specifically, since posive temperature coefficient thermistor itself can be influenced by ambient temperature, and then influence to turn motor M
The control of speed passes through temperature-compensating electricity so can add temperature-compensation circuit 130 to effectively reduce or avoid this influence
Road 130 carries out ambient temperature compensation to posive temperature coefficient thermistor.For example, when posive temperature coefficient thermistor resistance value with
When increasing or decreasing of environment temperature can carry out temperature-compensating by temperature-compensation circuit 130, to offset positive temperature coefficient temperature-sensitive
Resistance is increased or decreased because resistance value caused by environment temperature, so that the resistance value of posive temperature coefficient thermistor and motor M
Current rotating speed more match so that motor M revolving speed control it is more accurate.
In one embodiment, temperature-compensation circuit 130 includes: negative tempperature coefficient thermistor RT2, negative temperature coefficient heat
Quick resistance RT2 and posive temperature coefficient thermistor are connected in series, for example, negative tempperature coefficient thermistor RT2 can be connected on first
Between node J1 and posive temperature coefficient thermistor, it can also be connected between posive temperature coefficient thermistor and motor M.When just
The resistance value of temperature coefficient thermistor is as environment temperature is when increasing or decreasing, due to negative tempperature coefficient thermistor RT2's
Change in resistance in contrast, so positive temperature coefficient can be offset by the reasonable selection to negative tempperature coefficient thermistor RT2
The resistance value of thermistor changes, so that the influence because of environment temperature to the total resistance value of charge circuit is effectively reduced or avoid, so that electric
The revolving speed control of machine M is more accurate, and circuit structure is simple and reliable.
In one embodiment, as shown in fig. 6, motor speed control device further include: filter circuit 140, filter circuit
140 are arranged between first node J1 and one end of bilateral diode DZ, filter to the charging voltage to first capacitor C1
Wave processing, to reduce ripple voltage, so that the angle of flow is more stable.
Specifically, due to the supply voltage and inductance coil L of power supply AC or the induced current or induction of mutual inductor T
Voltage is alternation, so that the voltage ripple on first capacitor C1 is larger, and the ripple will affect the size of angle of flow α,
So being additionally arranged filter circuit 140 between first capacitor C1 and bilateral diode DZ, line is inhibited by the filter circuit 140
Wave, and then guarantee that angle of flow α is in stable state, guarantee the control of motor M stabilization of speed.
In one embodiment, filter circuit 140 includes: C filter circuit, RC filter circuit or LC filter circuit.Such as Fig. 6
It is shown, it may include second resistance R2 and the second capacitor C2 when filter circuit 140 includes RC filter circuit.It is understood that
That in practical applications, filter circuit 140 can also select other circuits, such as C filter circuit or π type RC filter circuit or
Person's LC filter circuit etc., specifically with no restrictions.
It should be noted that above-described embodiment is illustrated by taking power supply AC is AC power source as an example, and in reality
In the application of border, power supply AC can be replaced with DC power supply, to realize the control to direct current generator.
In one embodiment, as shown in fig. 7, additionally providing a kind of motor 1000 comprising above-mentioned motor speed control
Device 100 processed.Wherein, motor 1000 can be direct current generator or alternating current generator.
In the present embodiment, the resistance value of adjustable resistance is adjusted according to the current rotating speed of motor by Speed sensing unit
Section, power supply are charged by motor and adjustable resistance to first capacitor, and bilateral diode and controlled tr tube are in first capacitor
Charging voltage under carry out on or off be adjusted with the revolving speed to motor, thus, it is possible to realize motor speed it is automatic,
Accurately control, the revolving speed of motor automatically adjusted with the variation of load, and structure is simple, assembly is simple, at
This low, reliable performance and it is not necessarily to manual synchronizing.
In one embodiment, as shown in figure 8, additionally providing a kind of food processing equipment 10000 comprising above-mentioned electricity
Machine 1000.Wherein, food processing equipment 10000 can be blender, crusher etc..
In the present embodiment, the resistance value of adjustable resistance is adjusted according to the current rotating speed of motor by Speed sensing unit
Section, power supply are charged by motor and adjustable resistance to first capacitor, and bilateral diode and controlled tr tube are in first capacitor
Charging voltage under carry out on or off be adjusted with the revolving speed to motor, thus, it is possible to realize the accurate control of motor speed
System so that the revolving speed of motor can be automatically adjusted with the variation of load in food processing equipment, and structure it is simple,
Assemble simple, at low cost, reliable performance and without manual synchronizing.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of motor speed control device, which is characterized in that the motor speed control device includes:
Speed feedback circuit, the speed feedback circuit include Speed sensing unit and adjustable resistance, the Speed sensing unit
The resistance value of the adjustable resistance to be adjusted according to the current rotating speed of motor；
Rotation speed control loop, the rotation speed control loop include first capacitor, bilateral diode and controlled tr tube, and described first
Capacitor and the adjustable resistance are connected in series and have first node, one end phase of the first node and the bilateral diode
Even, the other end of the bilateral diode is connected with the control terminal of the controlled tr tube, wherein works on power in the motor
When, power supply gives the first capacitor to charge by the motor and the adjustable resistance, the bilateral diode and described
Controlled tr tube is carried out on or off under the charging voltage of the first capacitor and is adjusted with the revolving speed to the motor.
2. motor speed control device according to claim 1, which is characterized in that the Speed sensing unit includes inductance
Coil, the inductance coil are connected in parallel with the adjustable resistance, and the inductance coil works as forward to incude the motor
Speed simultaneously exports induced current to the adjustable resistance.
3. motor speed control device according to claim 1, which is characterized in that the Speed sensing unit includes mutual inductance
Device, the mutual inductor are connected in parallel with the adjustable resistance, operating current/work of the mutual inductor to incude the motor
Voltage simultaneously exports induced current/induced voltage to the adjustable resistance.
4. motor speed control device according to claim 2 or 3, which is characterized in that the adjustable resistance is positive temperature
Coefficient resistance.
5. motor speed control device according to claim 4, which is characterized in that the motor speed control device is also
Include:
Temperature-compensation circuit, the temperature-compensation circuit correspond to posive temperature coefficient thermistor setting, to it is described just
Temperature coefficient thermistor carries out ambient temperature compensation.
6. motor speed control device according to claim 5, which is characterized in that the temperature-compensation circuit includes:
Negative tempperature coefficient thermistor, the negative tempperature coefficient thermistor are connected company with the posive temperature coefficient thermistor
It connects.
7. motor speed control device according to claim 1, which is characterized in that the motor speed control device is also
Include:
Filter circuit, the filter circuit is arranged between the first node and one end of the bilateral diode, to right
The charging voltage of the first capacitor is filtered.
8. motor speed control device according to claim 7, which is characterized in that the filter circuit includes: C filtered electrical
Road, RC filter circuit or LC filter circuit.
9. a kind of motor, which is characterized in that including motor speed control device according to claim 1 to 8.
10. a kind of food processing equipment, which is characterized in that including motor according to claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811326753.6A CN109347401B (en) | 2018-11-08 | 2018-11-08 | Motor rotation speed control device, motor and food processing equipment |
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| CN201811326753.6A CN109347401B (en) | 2018-11-08 | 2018-11-08 | Motor rotation speed control device, motor and food processing equipment |
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| CN109347401B CN109347401B (en) | 2023-11-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112020178A (en) * | 2019-05-29 | 2020-12-01 | B/E航空公司 | Passive lighting ramp circuit |
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| CN203151419U (en) * | 2013-03-21 | 2013-08-21 | 浙江湖州新京昌电子有限公司 | Rotating speed controller for gun drill |
| CN106685282A (en) * | 2015-11-05 | 2017-05-17 | 广东美的生活电器制造有限公司 | Electric appliance and motor speed regulating device thereof |
| CN205689473U (en) * | 2016-06-12 | 2016-11-16 | 广东金莱特电器股份有限公司 | AC fan Novel electrodeless alignment circuit |
| CN206533311U (en) * | 2016-12-23 | 2017-09-29 | 安庆明基服饰有限责任公司 | A kind of micro machine pedal speed-adjusting device |
| CN108497952A (en) * | 2017-02-23 | 2018-09-07 | 广东美的生活电器制造有限公司 | Food cooking machine and its anti-blocking rotary device, method |
| CN209200966U (en) * | 2018-11-08 | 2019-08-02 | 深圳和而泰智能控制股份有限公司 | Motor speed control device, motor and food processing equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112020178A (en) * | 2019-05-29 | 2020-12-01 | B/E航空公司 | Passive lighting ramp circuit |
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| CN109347401B (en) | 2023-11-28 |
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