CN205725687U - The driving means of electric magnet and there is the cooking apparatus of this device - Google Patents
The driving means of electric magnet and there is the cooking apparatus of this device Download PDFInfo
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- CN205725687U CN205725687U CN201620591565.6U CN201620591565U CN205725687U CN 205725687 U CN205725687 U CN 205725687U CN 201620591565 U CN201620591565 U CN 201620591565U CN 205725687 U CN205725687 U CN 205725687U
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Abstract
The utility model discloses the driving means of a kind of electric magnet, including: the first switch element, its outfan is connected with one end of electric magnet；Second switch unit, its outfan is connected with the other end of electric magnet；Control unit, it has the first outfan and the second outfan, the input of the first outfan and the first switch element is connected, second outfan is connected with the input of second switch unit, control unit for by first outfan output startup control signal to the first switch element with control electric magnet enter starting state, and by the second adjustable pwm signal of outfan output duty cycle to second switch unit with control electric magnet open frequency.Thus, by by the duty cycle adjustment of pwm signal to can stably maintain the minimum duty cycle that electric magnet opens, it is possible to decrease flow through the electric current of electric magnet, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, promote the service life of electric magnet.
Description
Technical field
This utility model relates to an electro-technical field, particularly to driving means and a kind of cooking pot of a kind of electric magnet
Tool.
Background technology
The cooking apparatus of relevant band pressure apparatus would generally use electric magnet as the switching device of pressure valve.In phase
In the technology of pass, DM the most in the following ways, the port of MCU will be connected directly to export high level with audion
Or low level is to audion, and then controls electric magnet by the break-make controlling audion and open or adhesive.
But, correlation technique has the drawback that, the electric current that circuit consumes is relatively big, and temperature rise during work of electromagnet is higher,
Have impact on the service life of electric magnet.Therefore, correlation technique needs to improve.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this reality
Being to propose the driving means of a kind of electric magnet by a novel purpose, this device can effectively reduce temperature during work of electromagnet
Rise.
Another purpose of the present utility model is to propose a kind of cooking apparatus.
For reaching above-mentioned purpose, the driving means of a kind of electric magnet that on the one hand this utility model proposes, including: first opens
Closing unit, the outfan of described first switch element is connected with one end of described electric magnet；Second switch unit, described second opens
The outfan closing unit is connected with the other end of described electric magnet；Control unit, described control unit have the first outfan and
Second outfan, described first outfan is connected with the input of described first switch element, and described second outfan is with described
The input of second switch unit is connected, and described control unit is for controlling signal to by described first outfan output startup
Described first switch element enters starting state to control described electric magnet, and can by described second outfan output duty cycle
The pwm signal adjusted extremely described second switch unit is to control to flow through the electric current of described electric magnet.
According to the driving means of the electric magnet that the utility model proposes, control unit starts control by the first outfan output
Signal processed enters starting state to the first switch element to control electric magnet, and adjustable by the second outfan output duty cycle
Pwm signal to second switch unit to control to flow through the electric current of electric magnet.Thus, by by the duty cycle adjustment of pwm signal extremely
Can stably maintain the minimum duty cycle that electric magnet is opened, it is possible to decrease flow through the electric current of electric magnet, thus reduce electricity to greatest extent
Temperature rise during magnet works, and effectively reduce energy loss, promote the service life of electric magnet.
Further, described first switch element includes: the first audion, the base stage of described first audion and described control
First outfan of unit processed is connected, the grounded emitter of described first audion；First resistance, one end of described first resistance
Being connected with default power supply, the other end of described first resistance is connected with the colelctor electrode of described first audion；Second resistance, described
One end of second resistance is connected with the other end of described first resistance；Second audion, the base stage of described second audion and institute
The other end stating the second resistance is connected, and the emitter stage of described second audion is connected with described default power supply, described two or three pole
The colelctor electrode of pipe is connected with one end of described electric magnet.
Further, described first switch element also includes: the 3rd resistance, one end and described second of described 3rd resistance
The emitter stage of audion is connected, and the other end of described 3rd resistance is connected with the colelctor electrode of described second audion.
Further, described second switch unit includes: the 4th resistance, and one end of described 4th resistance controls list with described
Second outfan of unit is connected；3rd audion, the base stage of described 3rd audion is connected with the other end of described 4th resistance,
The described colelctor electrode of the 3rd audion is connected with the other end of described electric magnet, the grounded emitter of described 3rd audion；The
Five resistance, one end of described 5th resistance is connected with one end of described 4th resistance, the other end ground connection of described 5th resistance.
Further, the driving means of described electric magnet also includes: diode, the negative electrode of described diode and described electromagnetism
One end of ferrum is connected, and the anode of described diode is connected with the other end of described electric magnet.
Preferably, described startup control signal can be high level signal.
For reaching above-mentioned purpose, a kind of cooking apparatus that on the other hand this utility model proposes, including described electric magnet
Driving means.
According to the cooking apparatus that the utility model proposes, by the driving means of above-mentioned electric magnet, it is possible to decrease flow through electricity
The electric current of Magnet, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, promote electric magnet
Service life.
Accompanying drawing explanation
Fig. 1 is the block diagram of the driving means of the electric magnet according to this utility model embodiment；
Fig. 2 is the circuit theory diagrams of the driving means of the electric magnet according to one specific embodiment of this utility model；
Fig. 3 is the flow chart of the driving method of the electric magnet according to this utility model embodiment；And
Fig. 4 is the flow chart of the driving method of the electric magnet according to one specific embodiment of this utility model.
Reference:
First switch element 1, second switch unit 2, control unit 3 and electric magnet 4；
First audion Q1, the first resistance R1, the second resistance R2 and the second audion Q2；
3rd resistance R3, the 4th resistance R4, the 3rd audion Q3, the 5th resistance R5 and diode D1.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
Below with reference to the accompanying drawings describe this utility model embodiment propose the driving means of electric magnet and there is its culinary art
Utensil and the driving method of electric magnet.
Fig. 1 is the block diagram of the driving means of the electric magnet according to utility model embodiment.As it is shown in figure 1, this drives
Dynamic device includes: the first switch element 1, second switch unit 2 and control unit 3.
Wherein, the outfan of the first switch element 1 is connected with one end of electric magnet 4；The outfan of second switch unit 2 with
The other end of electric magnet 4 is connected；Control unit 3 has the first outfan out1 and the second outfan out2, the first outfan
The input of out1 and the first switch element 1 is connected, and the second outfan out2 is connected with the input of second switch unit 2, control
Unit 3 processed enters to control electric magnet 4 for controlling signal to the first switch element 1 by the first outfan out1 output startup
Starting state, and by the second outfan adjustable pwm signal of out2 output duty cycle to second switch unit 2 to control to flow through
The electric current of electric magnet 4.
Specifically, the two ends of electric magnet 4 are connected with the first switch element 1 and second switch unit 2 respectively, control unit
3 control signal to the first switch element 1 so that one end of electric magnet 4 connects with power supply by the first outfan out1 output startup
Lead to, and then control electric magnet 4 enters starting state, and pass through the second outfan adjustable pwm signal of out2 output duty cycle extremely
Second switch unit 2, opens action with DM 4, and meanwhile, control unit 3 can by the dutycycle of regulation pwm signal
To control to flow through the electric current of electric magnet 4.Specifically, when control unit 3 accounting for by the pwm signal of the second outfan out2 output
Empty ratio is when increasing, and the electric current flowing through electric magnet 4 raises；When control unit 3 is by the pwm signal of the second outfan out2 output
When dutycycle reduces, flow through the current reduction of electric magnet 4, i.e. say, flow through size of current and the second outfan out2 of electric magnet 4
The dutycycle positive correlation of the pwm signal of output.
Thus, by the minimum duty cycle that the duty cycle adjustment of pwm signal extremely can stably maintain electric magnet open, can drop
The low electric current flowing through electric magnet, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, carry
Rise the service life of electric magnet.
In an embodiment of the present utility model, as in figure 2 it is shown, the first switch element 1 includes: the first audion Q1,
First resistance R1, the second resistance R2 and the second audion Q2.
Wherein, the base stage of the first audion Q1 is connected with the first outfan out1 of control unit 3, the first audion Q1's
Grounded emitter；One end of first resistance R1 is connected with default power supply VCC, the other end of the first resistance R1 and the first audion Q1
Colelctor electrode be connected；One end of second resistance R2 is connected with the other end of the first resistance R1；The base stage of the second audion Q2 and the
The other end of two resistance R2 is connected, and the emitter stage of the second audion Q2 is connected with default power supply VCC, the current collection of the second audion Q2
Pole is connected with one end of electric magnet 4.
According to a concrete example of the present utility model, presetting power supply VCC can be 18V.
As in figure 2 it is shown, the first switch element also includes: the 3rd resistance R3, wherein, one end and the two or three of the 3rd resistance R3
The emitter stage of pole pipe Q2 is connected, and the other end of the 3rd resistance R3 and the colelctor electrode of the second audion Q2 are connected.
In an embodiment of the present utility model, as in figure 2 it is shown, second switch unit 2 includes: the 4th resistance R4,
Three audion Q3 and the 5th resistance R5.Wherein, one end of the 4th resistance R4 is connected with the second outfan out2 of control unit 3；
The base stage of the 3rd audion Q3 is connected with the other end of the 4th resistance R4, and the colelctor electrode of the 3rd audion Q3 is another with electric magnet 4
One end is connected, the grounded emitter of the 3rd audion Q3；One end of 5th resistance R5 is connected with one end of the 4th resistance R4, and the 5th
The other end ground connection of resistance R5.
As in figure 2 it is shown, the driving means of electric magnet also includes: diode D1, wherein, the negative electrode of diode D1 and electric magnet
One end of 4 is connected, and the anode of diode D1 is connected with the other end of electric magnet 4.Wherein, diode D1 is for breaking at electric magnet 4
Discharge loop is constituted, to protect magnet spool during electricity.
According to a specific embodiment of the present utility model, starting control signal can be high level signal.
Specifically, during control electric magnet 4 is opened, control unit 3 is opened by the first outfan out1 output
Dynamic control signal, wherein, startup control signal is high level signal, and now, the first audion Q1 is open-minded, and the second audion Q2 opens
Logical, one end of electric magnet 4 connects with default power supply VCC, thus controls electric magnet 4 and enter starting state.Meanwhile, control unit 3
By the second outfan out2 output pwm signal, if pwm signal is high level, then the 3rd audion Q3 is open-minded, electric magnet 4
Other end ground connection, preset power supply VCC be that electric magnet 4 is powered by the second audion Q2；If pwm signal is low level, then
3rd audion Q3 turns off, the other end open circuit of electric magnet 4, and electric magnet 4 forms continuous current circuit by the first diode D1, this
Sample, control unit 3 can control to flow through the electric current of electric magnet 4 by the dutycycle controlling pwm signal.From there through controlling PWM
The dutycycle of signal can make electric magnet 4 maintain attracting state with minimum current value, thus reduces the temperature of electric magnet 4 to greatest extent
Rise, reduce loss.
In an embodiment of the present utility model, control unit 3 is further used for, after obtaining electric magnet startup order
Control the first outfan out1 output and start control signal, and control the second outfan out2 output and first preset dutycycle
Pwm signal, and after the persistent period exporting the first pwm signal presetting dutycycle reaches the first preset time t 1, often
Control the dutycycle of pwm signal every the second preset time t 2 to preset dutycycle according to default adjusted value X% from first and gradually successively decrease,
Until the dutycycle of pwm signal reaches second presets dutycycle Y%.
In an embodiment of the present utility model, control unit 3 is additionally operable to, and the dutycycle at pwm signal reaches second
After presetting dutycycle Y%, control the second outfan out2 and persistently export the second pwm signal presetting dutycycle Y%, until obtaining
Get control electric magnet 4 after electric magnet turns off order to close.
According to a concrete example of the present utility model, the span of the first preset time t 1 be preferably 0.1 second to 1
Hour；The span of the second preset time t 2 is preferably 0.01 second to 30 minutes；The span presetting adjusted value X% can
It is preferably 0.01% to 50%；Second span presetting dutycycle Y% is preferably 0.01% to 99%.
It should be noted that in the first preset time t 1, the first pwm signal presetting dutycycle is continuously high level letter
Number, i.e. say, first to preset dutycycle be 100%, and the electric current then flowing through electric magnet 4 is maximum；Second preset time t 2 is believed for PWM
Number dutycycle switching time；Second to preset dutycycle Y% be the minimum duty that electric magnet 4 can be maintained to keep opening state
Ratio, i.e. says, the electric current then flowing through electric magnet 4 is the minimum current value maintaining electric magnet 4 adhesive.
Specifically, control unit 3 is internal can be provided with timer T, very first time memorizer T1 and the storage of the second time
Device T2, wherein, timer T is in order to carry out timing to the working time of electric magnet 4, and the very first time, memorizer T1 was used for storing startup
Stage first presets the persistent period of the pwm signal of dutycycle, and the second time memory T2 is used for storing metamorphosis stage pwm signal
Switching time.
After obtaining electric magnet startup order, control unit 3 controls the first outfan out1 output and starts control signal, and
Control the second outfan out2 output first and preset the pwm signal of dutycycle, open-minded to control electric magnet 4, i.e. say, control unit
3 control the first outfan out1 and the second outfan out2 all exports high level, and now electric magnet 4 is energized, the startup stage of entrance,
And timer T starts timing.Startup stage, the timing time that control unit 3 stores according to very first time memorizer T1 judges
Whether its output first presets the persistent period of the pwm signal of dutycycle more than the first preset time t 1, the i.e. second outfan
Whether the time of out2 output high level is more than the first preset time t 1.And in judging the very first time memorizer T1 pwm signal
Persistent period more than after the first preset time t 1, enter the metamorphosis stage.
In the metamorphosis stage, the drive level of DM 4 is driven from lasting high level and becomes pwm signal driving, i.e.
The dutycycle of the pwm signal of control unit 3 output starts to successively decrease from 100%.Control unit 3 is first according to the second time memory
The timing time of T2 storage judges that whether its output first presets the time of the pwm signal of dutycycle more than the second Preset Time
T2, if it is determined that the time that the pwm signal of dutycycle is preset in output first is more than the second preset time t 2, then presets first and accounts for
Empty ratio deducts default adjusted value X% to obtain current duty cycle, controls the second time memory T2 simultaneously and starts from scratch and again count
Time, control unit 3 determines whether whether the current duty cycle of pwm signal reaches second and preset dutycycle Y%, if it is determined that
The current duty cycle of pwm signal is not up to second and presets dutycycle Y%, then control unit 3 is according to current duty cycle output PWM letter
Number, and judge its time according to current duty cycle output pwm signal according to the timing time of the second time memory T2 storage
Whether more than the second preset time t 2, if it is determined that more than the second preset time t 2, then continue to deduct current duty cycle default
Adjusted value X% is to update current duty cycle, and controls the dutycycle of pwm signal in the manner previously described according to default adjusted value X%
Gradually successively decrease, until the dutycycle of pwm signal presets dutycycle Y% more than or equal to second.
After the dutycycle of pwm signal presets dutycycle Y% more than or equal to second, control unit 3 controls the second output
End out2 persistently exports the second pwm signal presetting dutycycle Y%, so that electric magnet keeps minimum consumption electric current to carry out work
Make.
Opening of such as cooking apparatus entrance pressure release stage or electric magnet is ordered when control unit 3 gets electric magnet shutoff
When the logical time reaches three Preset Times, control unit 3 exports low electricity by the first outfan out1 and the second outfan out2
Ordinary mail number, closes controlling electric magnet 4.
Thus, the driving means of the electric magnet of this utility model embodiment is opened also by the type of drive of frequency error factor
Maintain electromagnetic actuation, i.e. first pass through high level and make electric magnet 4 adhesive, then be gradually lowered the dutycycle i.e. height electricity of pwm signal
Flat output time, until the duty cycle adjustment of pwm signal is to the minimum duty cycle that can stably maintain electric magnet to open.
Thus, according to the driving means of the electric magnet that this utility model embodiment proposes, control unit is by the first output
End output startup controls signal to the first switch element and enters starting state to control electric magnet, and is exported by the second outfan
The adjustable pwm signal of dutycycle to second switch unit to control to flow through the electric current of electric magnet.Thus, by by pwm signal
Duty cycle adjustment to can stably maintain electric magnet opening state minimum duty cycle, it is possible to decrease flow through the electric current of electric magnet, from
And temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, promote the service life of electric magnet.
This utility model also proposed a kind of cooking apparatus, including the driving means of above-mentioned electric magnet.
According to a concrete example of the present utility model, cooking apparatus can be electric pressure cooking saucepan.
To sum up, the cooking apparatus proposed according to this utility model embodiment, by the driving of the electric magnet of above-described embodiment
Device, it is possible to decrease flow through the electric current of electric magnet, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy
Amount loss, promotes the service life of electric magnet.
Fig. 3 is the flow chart of the driving method of the electric magnet according to this utility model embodiment, wherein, and the driving of electric magnet
Device includes the first switch element and second switch unit, and the outfan of the first switch element is connected with one end of electric magnet, the
The outfan of two switch elements is connected with the other end of electric magnet.
As it is shown on figure 3, the driving method of electric magnet comprises the following steps:
S1: electric magnet is started order and is monitored.
S2: after obtaining electric magnet startup order, output startup controls signal to the first switch element to control electric magnet
Enter starting state, and the adjustable pwm signal of output duty cycle to second switch unit to control to flow through the electric current of electric magnet.
Specifically, the two ends of electric magnet are connected with the first switch element and second switch unit respectively, are opened by output
Dynamic control signal to the first switch element makes one end and the power on of electric magnet, and then controls electric magnet entrance starting state,
And by the adjustable pwm signal of output duty cycle to second switch unit, DM open action, meanwhile, by adjusting
The dutycycle of joint pwm signal can control to flow through the electric current of electric magnet.Specifically, increase when the dutycycle of the pwm signal of output
Time, the electric current flowing through electric magnet raises；When the dutycycle of the pwm signal of output reduces, flow through the current reduction of electric magnet, i.e.
Speech, flows through the size of current of electric magnet and the dutycycle positive correlation of the pwm signal of the second outfan output.
Thus, by the minimum duty cycle that the duty cycle adjustment of pwm signal extremely can stably maintain electric magnet open, can drop
The low electric current flowing through electric magnet, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, carry
Rise the service life of electric magnet.
In an embodiment of the present utility model, the adjustable pwm signal of output duty cycle, to second switch unit, enters one
Step includes: the pwm signal that first dutycycle is preset in output first, and when exporting the first pwm signal presetting dutycycle lasting
Between reach the first preset time t 1 after, control the dutycycle of pwm signal according to default adjusted value every the second preset time t 2
X% presets dutycycle from first and gradually successively decreases, until the dutycycle of pwm signal reaches second presets dutycycle Y%.
Further, the driving method of electric magnet also includes: the dutycycle at pwm signal reach second preset dutycycle it
After, persistently the pwm signal of dutycycle is preset in output second, until the persistent period of output startup control signal reaches the 3rd and presets
Control electric magnet during the time to close.
According to a concrete example of the present utility model, the span of the first preset time t 1 be preferably 0.1 second to 1
Hour；The span of the second preset time t 2 is preferably 0.01 second to 30 minutes；The span presetting adjusted value X% can
It is preferably 0.01% to 50%；Second span presetting dutycycle Y% is preferably 0.01% to 99%.
It should be noted that in the first preset time t 1, the first pwm signal presetting dutycycle is continuously high level letter
Number, i.e. say, first to preset dutycycle be 100%, and the electric current then flowing through electric magnet is maximum；Second preset time t 2 is believed for PWM
Number dutycycle switching time；Second preset dutycycle Y% be can maintain electric magnet keep opening state minimum duty cycle,
I.e. saying, the electric current then flowing through electric magnet is the minimum current value maintaining electromagnetic actuation.
As shown in Figure 4, following steps are specifically included according to the driving method of the electric magnet of this utility model embodiment:
S10: electric magnet is started order and is monitored, it is judged that electric magnet is the need of open-minded.
If it is, perform step S20；If it is not, then perform step S90.
S20: control output startup and control signal to the first switch element, and control to export the first PWM presetting dutycycle
Signal is to second switch unit, open-minded to control electric magnet.
Specifically, starting control signal can be high level signal.
S30: judge that whether the persistent period of the first pwm signal presetting dutycycle is more than the first preset time t 1.
If it is, perform step S40；If it is not, then return step S20.
Specifically, when time timer, very first time memorizer and second can be set inside the driving means of electric magnet
Between memorizer, wherein, timer in order to the service time of electric magnet is carried out timing, very first time memorizer in storage start rank
Section first presets the persistent period of the pwm signal of dutycycle, and the second time memory is for storing cutting of metamorphosis stage pwm signal
Change the time.Timing time according to very first time memorizer T1 storage judges that the pwm signal of dutycycle is preset in its output first
Whether persistent period, whether more than the first preset time t 1, i.e. exports the time of the high level to the first switch element more than first
Preset time t 1.
S40: judge that whether the service time of pwm signal is more than the second preset time t 2.
If it is, perform step S50；If it is not, then return step S40.
Specifically, judge that the PWM of dutycycle is preset in the first of output according to the timing time of the second time memory storage
Whether the time of signal is more than the second preset time t 2.
S50: the dutycycle of the pwm signal controlling output deducts default adjusted value X%, controls the second time memory simultaneously
Reset.
It should be appreciated that when performing step S50, the drive level controlling DM is driven by lasting high level
The dynamic pwm signal that becomes drives, and the dutycycle of the pwm signal i.e. controlling output starts to successively decrease from 100%.
Specifically, if it is determined that the time that the pwm signal of dutycycle is preset in output first is more than the second preset time t 2, then
Preset dutycycle by first and deduct default adjusted value X% to obtain current duty cycle, control the second time memory from zero simultaneously
Start reclocking.
S60: judge whether the dutycycle of pwm signal presets dutycycle Y% more than or equal to second.
If it is, perform step S70；If it is not, then return step S40.
Specifically, if it is determined that the current duty cycle of pwm signal is not up to second presets dutycycle Y%, then according to currently
Dutycycle output pwm signal to second switch unit, and according to the timing time of the second time memory storage judge its according to
Whether the time of current duty cycle output pwm signal is more than the second preset time t 2, if it is determined that more than the second preset time t 2,
Then continue to deduct current duty cycle default adjusted value X% to update current duty cycle, and control pwm signal in the manner previously described
Dutycycle gradually successively decrease according to default adjusted value X%, until the dutycycle of pwm signal presets dutycycle more than or equal to second
Y%.
S70: control output and maintain second to preset the pwm signal of dutycycle Y% to second switch unit.
S80: electric magnet is turned off order and is monitored, it is judged that electric magnet is the need of closedown.
If it is, perform step S90；If it is not, then return step S80.
Specifically, turn off and order such as cooking apparatus to enter the open-minded of pressure release stage or electric magnet when getting electric magnet
When time reaches three Preset Times, output low level signal to the first switch element and second switch unit, to control electromagnetism
Ferrum is closed.
S90: control electric magnet and close.
To sum up, according to the driving method of the electric magnet that this utility model embodiment proposes, by electric magnet is started order
Being monitored, after getting electric magnet startup order, output startup controls signal to the first switch element to control electric magnet
Enter starting state, and the adjustable pwm signal of output duty cycle to second switch unit to control to flow through the electric current of electric magnet.By
This, by the minimum duty cycle that the duty cycle adjustment of pwm signal extremely can stably maintain electric magnet open, it is possible to decrease flow through electromagnetism
The electric current of ferrum, thus temperature rise when reducing work of electromagnet to greatest extent, and effectively reduce energy loss, promote electric magnet
Service life.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " suitable
Hour hands ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings
Or position relationship, be for only for ease of describe this utility model and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common skill for this area
For art personnel, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered
Row combines and combination.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
In above-described embodiment can be changed, revise, replace and modification.
Claims (7)
1. the driving means of an electric magnet, it is characterised in that including:
First switch element, the outfan of described first switch element is connected with one end of described electric magnet；
Second switch unit, the outfan of described second switch unit is connected with the other end of described electric magnet；
Control unit, described control unit has the first outfan and the second outfan, described first outfan and described first
The input of switch element is connected, and described second outfan is connected with the input of described second switch unit, and described control is single
Unit enters to control described electric magnet for controlling signal to described first switch element by described first outfan output startup
Enter starting state, and by the described second adjustable pwm signal of outfan output duty cycle to described second switch unit with control
System flows through the electric current of described electric magnet.
The driving means of electric magnet the most according to claim 1, it is characterised in that described first switch element includes:
First audion, the base stage of described first audion is connected with the first outfan of described control unit, and the described 1st
The grounded emitter of pole pipe；
First resistance, one end of described first resistance is connected with default power supply, the other end of described first resistance and described first
The colelctor electrode of audion is connected；
Second resistance, one end of described second resistance is connected with the other end of described first resistance；
Second audion, the base stage of described second audion is connected with the other end of described second resistance, described second audion
Emitter stage be connected with described default power supply, the colelctor electrode of described second audion is connected with one end of described electric magnet.
The driving means of electric magnet the most according to claim 2, it is characterised in that described first switch element also includes:
3rd resistance, one end of described 3rd resistance is connected with the emitter stage of described second audion, described 3rd resistance another
One end is connected with the colelctor electrode of described second audion.
The driving means of electric magnet the most according to claim 1, it is characterised in that described second switch unit includes:
4th resistance, described one end of 4th resistance is connected with the second outfan of described control unit；
3rd audion, the base stage of described 3rd audion is connected with the other end of described 4th resistance, described 3rd audion
Colelctor electrode be connected with the other end of described electric magnet, the grounded emitter of described 3rd audion；
5th resistance, one end of described 5th resistance is connected with one end of described 4th resistance, the other end of described 5th resistance
Ground connection.
The driving means of electric magnet the most according to claim 1, it is characterised in that also include:
Diode, the negative electrode of described diode is connected with one end of described electric magnet, the anode of described diode and described electromagnetism
The other end of ferrum is connected.
The driving means of electric magnet the most according to claim 1, it is characterised in that described startup control signal is high level
Signal.
7. a cooking apparatus, it is characterised in that include the driving dress according to the electric magnet according to any one of claim 1-6
Put.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591565.6U CN205725687U (en) | 2016-06-15 | 2016-06-15 | The driving means of electric magnet and there is the cooking apparatus of this device |
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|---|---|---|---|
| CN201620591565.6U CN205725687U (en) | 2016-06-15 | 2016-06-15 | The driving means of electric magnet and there is the cooking apparatus of this device |
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| CN205725687U true CN205725687U (en) | 2016-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517047A (en) * | 2016-06-15 | 2017-12-26 | 佛山市顺德区美的电热电器制造有限公司 | The drive device and driving method of electromagnet and the cooking apparatus with the device |
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2016
- 2016-06-15 CN CN201620591565.6U patent/CN205725687U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517047A (en) * | 2016-06-15 | 2017-12-26 | 佛山市顺德区美的电热电器制造有限公司 | The drive device and driving method of electromagnet and the cooking apparatus with the device |
| CN107517047B (en) * | 2016-06-15 | 2023-08-22 | 佛山市顺德区美的电热电器制造有限公司 | Driving device and driving method of electromagnet and cooking utensil with driving device |
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