CN205809579U - Electric kettle control circuit and electric kettle - Google Patents
Electric kettle control circuit and electric kettle Download PDFInfo
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- CN205809579U CN205809579U CN201620558371.6U CN201620558371U CN205809579U CN 205809579 U CN205809579 U CN 205809579U CN 201620558371 U CN201620558371 U CN 201620558371U CN 205809579 U CN205809579 U CN 205809579U
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- electric kettle
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- 230000036760 body temperature Effects 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 7
- 238000005485 electric heating Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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Abstract
The utility model provides an electric kettle control circuit and electric kettle, wherein, this circuit includes: control chip and heating the control unit, control chip is connected with the heating the control unit, and control chip's ground wire electric potential equals with the live wire electric potential of the power plug of electric kettle, and this circuit still includes: the kettle body lamp control unit is connected with the control chip, the kettle body lamp control unit is connected with the first end of the kettle body lamp, the second end of the kettle body lamp is connected to the zero line of a power plug of the electric kettle, the kettle body lamp control unit is used for enabling the electric potential of the first end of the kettle body lamp to be equal to the ground wire electric potential of the control chip under the control action of the control chip, the kettle body lamp is in a lighting state, the problem that the existing kettle body lamp control circuit cannot keep the kettle body lamp to be in a long lighting state in the whole heating process of the electric kettle is solved, and the problem that a user makes wrong judgment on the working state of the electric kettle is easily solved.
Description
Technical field
This utility model relates to circuit structure technical field, particularly relates to a kind of control circuit for electric kettle and electric hot water
Kettle.
Background technology
Along with the development of science and technology, electric kettle uses steam intelligent-induction temperature control, automatically power off after not only there is water boiling,
The function of anti-dry power-off, also has the multiple advantages such as firing rate is fast, high insulating effect, filtering function are strong, is increasingly becoming
A kind of electric equipment indispensable in people's daily life.Present stage, the bottle body of electric kettle is typically provided with bottle body lamp,
This bottle body lamp needs to be in long bright state in the whole work process of electric kettle, with improve electric kettle aesthetic and
The duty of instruction electric kettle.
At present, existing control circuit for electric kettle is to be connected by the heating unit of bottle body lamp with electric kettle by adapter
Connect, make bottle body lamp from power taking between the live wire and zero line of power subsystem under the control action of heating unit, and then make bottle body lamp
With the duty of heating unit and light on and off.
But, for needing the electric kettle of accurate temperature controlling, the heating unit of electric kettle uses the mode of intermittent-heating
Being operated, above-mentioned control circuit for electric kettle, when heating unit works, controls bottle body lamp bright, and does not works at heating unit
Time, control bottle body lamp and go out, therefore, it is impossible to keep bottle body lamp to be in long bright state in the whole heating process of electric kettle, hold
Easily make user that the duty of electric kettle is done the judgement made mistake.
Utility model content
In order to solve at least one problem mentioned in background technology, this utility model provides a kind of electric kettle to control electricity
Road and electric kettle, it is achieved that bottle body lamp is in illuminating state in the whole heating process of electric kettle, solve existing
Bottle body lamp control circuit cannot keep bottle body lamp to be in long bright state in the whole heating process of electric kettle, easily makes user
The problem that the duty of electric kettle is made false judgment.
To achieve these goals, first aspect, a kind of control circuit for electric kettle that this utility model provides, including:
Control chip and heat control unit, described control chip is connected with described heat control unit, the ground wire of described control chip
Electromotive force is equal with the live wire electromotive force of the attaching plug of electric kettle, and described circuit also includes: the kettle being connected with described control chip
Body lamp control unit；
Described bottle body lamp control unit is connected with the first end of bottle body lamp, and the second end of described bottle body lamp is connected to described electricity
On the zero line of hot-water bottle attaching plug, described bottle body lamp control unit, for making institute under the control action of described control chip
State the electromotive force of bottle body lamp the first end ground wire electromotive force equal to described control chip, be in illuminating state realizing described bottle body lamp.
The control circuit for electric kettle that this utility model provides, it is achieved that bottle body lamp is in the whole heating process of electric kettle
In be in illuminating state, solve that existing bottle body lamp control circuit cannot keep bottle body lamp at electric kettle is whole heated
Journey is in long bright state, easily makes the problem that the duty of electric kettle is made false judgment by user.
Optionally, in an embodiment of the present utility model, described bottle body lamp control unit, it is additionally operable to detect described electric heating
The bottle body temperature of kettle, described control chip, for gathering described bottle body temperature from described bottle body lamp control unit；
Described control chip, for controlling the duty of described heat control unit and described according to described bottle body temperature
The duty of bottle body lamp control unit, so that described bottle body lamp control unit realizes institute when described heat control unit works
State bottle body lamp and be in illuminating state, or realize institute when the off-air time of described heat control unit exceedes Preset Time
State bottle body lamp and be in the state of not working.This technical scheme, it is possible to be precisely controlled the light on and off state of bottle body lamp, Consumer's Experience is good.
Optionally, in above-described embodiment of the present utility model, described bottle body lamp control unit, including: a NTC group
Part, the first audion and the second audion；
First control line of a described NTC assembly is connected with the colelctor electrode of described first audion by the first resistance,
Second control line of a described NTC assembly is respectively with the first end of the colelctor electrode of described second audion and described bottle body lamp even
Connecing, described control chip gathers the kettle of described electric kettle by the second resistance from the first control line of a described NTC assembly
Body temperature；
The emitter stage of described first audion connects the reference voltage of described control chip, the emitter stage of described second audion
Connecing the ground of described control chip, the base stage of described first audion is passed through by the base stage of the 3rd resistance, described second audion
4th resistance is connected with described control chip respectively.
Optionally, in another embodiment of the present utility model, described bottle body lamp control unit and the of described bottle body lamp
One end all connects the ground of described control chip.
Optionally, in above-described embodiment of the present utility model, described bottle body lamp control unit, including: the 2nd NTC group
Part；
First control line of described 2nd NTC assembly connects reference voltage by the first resistance, the of described 2nd NTC assembly
First end of two control lines and described bottle body lamp all connects the ground of described control chip, and described control chip passes through the second resistance from institute
The first control line stating the 2nd NTC assembly gathers the bottle body temperature of described electric kettle.
Optionally, in above-described embodiment of the present utility model, described control circuit for electric kettle, also include: alternating current-direct current
Converting unit, voltage drop unit and voltage regulation unit；
Described AC-DC conversion unit, for being converted to DC voltage, described pressure by the alternating voltage of described electric kettle
Fall unit, for described DC voltage is converted to the second voltage by the first voltage, and described second voltage is less than described first
Voltage, described voltage regulation unit, for being converted to the reference voltage needed for described control chip by described second voltage.
Second aspect, a kind of control circuit for electric kettle that this utility model provides, including: control chip and computer heating control
Unit, described control chip is connected with described heat control unit, the electromotive force of the reference voltage of described control chip and electric hot water
The live wire electromotive force of the attaching plug of kettle is equal, and described circuit also includes: the bottle body lamp being connected with described control chip controls single
Unit；
Described bottle body lamp control unit is connected with the first end of bottle body lamp, the electromotive force of described bottle body lamp the first end and described control
The electromotive force of the reference voltage of coremaking sheet is equal, and the second end of described bottle body lamp is connected to the zero of the attaching plug of described electric kettle
On line, so that the electromotive force at described bottle body lamp two ends is equal to the electromotive force between described electric kettle attaching plug live wire and zero line, with
Realize described bottle body lamp and be in illuminating state.
The control circuit for electric kettle that this utility model provides, by making electromotive force and the electric heating of the reference voltage of control chip
The live wire electromotive force of the attaching plug of kettle is equal, and bottle body lamp control unit is connected with the first end of bottle body lamp, the of this bottle body lamp
On the zero line of the attaching plug that two ends are connected to electric kettle so that the electromotive force at bottle body lamp two ends is equal to electric kettle attaching plug
Electromotive force between live wire and zero line, it is achieved that bottle body lamp is in long bright state, avoids user's shape according to bottle body lamp equally
The problem that the duty of electric kettle is done the judgement made mistake by state.
Optionally, in above-described embodiment of the present utility model, described bottle body lamp control unit, including: the 3rd NTC group
Part；
First control line of described 3rd NTC assembly is connected with the first end of described bottle body lamp, described 3rd NTC assembly
The second control line connect the ground of described control chip by the 7th resistance；
Described control chip gathers described electric kettle by the 6th resistance from the second control line of described 3rd NTC assembly
Bottle body temperature, to control the duty of described heat control unit.
Optionally, in above-described embodiment of the present utility model, described control circuit for electric kettle, also include: alternating current-direct current
Converting unit, voltage drop unit and voltage regulation unit；
Described AC-DC conversion unit, for being converted to DC voltage, described pressure by the alternating voltage of described electric kettle
Fall unit, for described DC voltage is converted to the second voltage by the first voltage, and described second voltage is less than described first
Voltage, described voltage regulation unit, for being converted to the reference voltage needed for described control chip by described second voltage.
The third aspect, this utility model also provides for a kind of electric kettle, including: bottle body body and base, and include: peace
It is contained in the intrinsic wiring board of described bottle body；
Described wiring board, including: the control circuit for electric kettle described in first aspect；Or described wiring board, including: the
Control circuit for electric kettle described in two aspects.
Structure of the present utility model and its other purposes and beneficial effect will by combine accompanying drawing and to the most real
Execute the description of example and become apparent from understandable.
Accompanying drawing explanation
The structural representation of the control circuit for electric kettle that Fig. 1 provides for this utility model embodiment one；
The schematic diagram of the control circuit for electric kettle that Fig. 2 provides for this utility model embodiment two；
The schematic diagram of the control circuit for electric kettle that Fig. 3 provides for this utility model embodiment three；
The structural representation of the control circuit for electric kettle that Fig. 4 provides for this utility model embodiment four；
The structural representation of the control circuit for electric kettle that Fig. 5 provides for this utility model embodiment five；
Fig. 6 is the schematic diagram of control circuit for electric kettle in embodiment illustrated in fig. 5.
Detailed description of the invention
Embodiment one
The structural representation of the control circuit for electric kettle that Fig. 1 provides for this utility model embodiment one.As it is shown in figure 1,
The control circuit for electric kettle that this utility model embodiment provides, including: control chip 11 and heat control unit 12, this control
Chip 11 is connected with heat control unit 12, and, the ground wire electromotive force of control chip 11 and the fire of the attaching plug of electric kettle
Line electromotive force is equal, further, this control circuit for electric kettle, also include: the bottle body lamp being connected with control chip 11 controls single
Unit 14.
This bottle body lamp control unit 14 is connected with the first end A of bottle body lamp 15, and the second end B of bottle body lamp 15 is connected to electric heating
On the zero line N of kettle attaching plug, bottle body lamp control unit 14, for making bottle body lamp 15 under the control action of control chip 11
The electromotive force of the first end A equal to the ground wire electromotive force of control chip 11, be in illuminating state realizing bottle body lamp 15.
Concrete, during control circuit for electric kettle in designing the present embodiment, first by the attaching plug of electric kettle
The ground wire electromotive force of live wire electromotive force and control chip 11 make equipotential, secondly by the first end A of bottle body lamp 15 and bottle body lamp control
Unit 14 processed connects, and is connected on the zero line N of electric kettle attaching plug, the second end B of bottle body lamp 15 again by this bottle body
Lamp control unit 14 is connected with control chip 11.Now, control chip 11 can not only control the work of heat control unit 12
State, additionally it is possible to control the duty of bottle body lamp control unit 14, and then make bottle body lamp control unit 14 when normally working
Make the electromotive force of the first end A of bottle body lamp 15 equal to the ground wire electromotive force of control chip 11, be in illuminating state realizing bottle body lamp 15.
Owing to electromotive force is both for the voltage difference between 2, for any independent point, electromotive force is all not anticipate
Justice, therefore, the power supply of the ground wire electromotive force of control chip 11 with electric kettle can be inserted when designing control circuit for electric kettle
The live wire electromotive force of head makes equipotential, and can form 220V between the live wire electromotive force of attaching plug and the zero line electromotive force of attaching plug
Alternating current, and then the electric potential difference at bottle body lamp 15 two ends equal to voltage difference between live wire L and zero line N time, at bottle body lamp 15
In the state lighted.
The control circuit for electric kettle that this utility model embodiment provides, by by the ground wire electromotive force of control chip and electric heating
The live wire electromotive force of the attaching plug of kettle makes equipotential, and, this control circuit for electric kettle, also include: with control chip
The bottle body lamp control unit connected, the bottle body lamp of electric kettle respectively with bottle body lamp control unit and electric kettle attaching plug
Zero line connects, thus bottle body lamp control unit can make the two ends electric potential difference of bottle body lamp be equal under the control action of control chip
Electric potential difference between live wire and the zero line of the attaching plug of electric kettle, it is achieved thereby that bottle body lamp adds the whole of electric kettle
Being in illuminating state in thermal process, solve that existing bottle body lamp control circuit cannot keep bottle body lamp at electric kettle is whole
Heating process is in long bright state, easily makes the problem that the duty of electric kettle is made false judgment by user.
Further, in the bottle body lamp lighting control circuit that above-described embodiment provides, above-mentioned bottle body lamp control unit 14, also
For detecting the bottle body temperature of electric kettle, control chip 11, for gathering this bottle body temperature from bottle body lamp control unit 14.
This control chip 11, for control according to the bottle body temperature of electric kettle heat control unit 12 duty and
The duty of bottle body lamp control unit 14, so that bottle body lamp control unit 14 realizes bottle body when heat control unit 12 works
Lamp 15 is in illuminating state, or realizes bottle body lamp 15 when the off-air time of heat control unit 12 exceedes Preset Time
It is in the state of not working.
Concrete, this utility model embodiment utilizes bottle body lamp control unit 14 to detect the bottle body temperature of electric kettle, and
Control chip 11 gathers this bottle body temperature of acquisition from this bottle body lamp control unit 14, and then in bottle body temperature less than preset temperature
Time, controlling heat control unit 12 and the continuous firing of bottle body lamp control unit 14, control chip 11 is used for making bottle body lamp control
Unit 14, when heat control unit 12 works, makes the electromotive force ground wire electromotive force equal to control chip 11 of bottle body lamp 15 first end A,
It is achieved thereby that bottle body lamp 15 is in illuminating state in the whole heating process of electric kettle all the time.
But, control chip 11, when gathering the bottle body temperature got and reaching preset temperature, controls heat control unit
12 and bottle body lamp control unit 14 quit work, now, one end of bottle body lamp 15 is unsettled, and bottle body lamp 15 is in the state not worked.
What deserves to be explained is, owing to the heat control unit 12 of electric kettle may use the mode of intermittent-heating to carry out work
Make, so, control chip 11 can also detect the working time of heat control unit 12, in the stopping work of heat control unit 12
When the time exceedes Preset Time, show that the heating process of electric kettle terminates, control bottle body lamp control unit 14 and make bottle body lamp 15
It is in the state not worked.
Embodiment two
The schematic diagram of the control circuit for electric kettle that Fig. 2 provides for this utility model embodiment two.The present embodiment is upper
On the basis of stating embodiment, control circuit for electric kettle is further illustrated.As a kind of example, as in figure 2 it is shown, in this reality
Execute in the control circuit for electric kettle that example provides, above-mentioned bottle body lamp control unit 14, including: the first negative temperature coefficient
(Negative Temperature Coefficient is called for short NTC) assembly 21, first audion Q1 and the second audion Q2.
Wherein, the first control line 1 of a NTC assembly 21 is by the first resistance R1 and the colelctor electrode c of the first audion Q1
Connect, the second control line 2 of a NTC assembly 21 respectively with the colelctor electrode c and the first end A of bottle body lamp 15 of the second audion Q2
Connecting, control chip 11 gathers the bottle body temperature of electric kettle by the second resistance R2 from the first control line 1 of a NTC assembly 21
Degree.
The emitter e of the first audion Q1 connects reference voltage V DD of control chip 11, the emitter e of the second audion Q2
Connect the ground of control chip 11, base stage b of the first audion Q1 by the 3rd resistance R3, the second audion Q2 base stage b by the
Four resistance R4 are connected with control chip 11 respectively.Electric capacity Ce is had additionally, be connected between the second resistance R2 and the ground of control chip 11,
This electric capacity Ce has the effect of voltage stabilizing, and being connected between base stage b and the ground of control chip 11 of the second audion Q2 has pull down resistor
R5。
Optionally, in this schematic diagram of bottle body lamp lighting control circuit, heat control unit 12, including: the 3rd audion
Q3, relay 121 and the first diode D1, control chip 11 is connected by base stage b of resistance R11 and the 3rd audion Q3, the
It is also associated with pull down resistor R12, accessory power supply (+12V) and first between base stage b and the ground of control chip 11 of three audion Q3
Diode D1 and relay 121 connect, for providing electric energy for heat control unit 12.
Concrete, control chip 11 gathers electric heating by the second resistance R2 from the first control line 1 of a NTC assembly 21
The bottle body temperature of kettle.When bottle body temperature is less than preset temperature, control chip 11 performs to control as follows operation simultaneously: by the
Three resistance R3 control the first audion Q1 conducting and control the second audion Q2 conducting, therefore bottle body lamp 15 by the 4th resistance R4
The first end A be directly connected with the ground of control chip 11 by the second audion Q2, that is, the electricity of the first end A of bottle body lamp 15
Gesture is equal to the ground wire electromotive force of control chip 11, and now, the electromotive force at bottle body lamp 15 two ends is equal to the zero line N of electric kettle attaching plug
And the electromotive force between live wire L, bottle body lamp 15 is in illuminating state.Now, control chip 11 can be according to the heating side of electric kettle
Formula controls the duty of heat control unit 12.
Accordingly, when bottle body temperature is equal to preset temperature, control chip 11 performs to control as follows operation simultaneously: by the
Three resistance R3 are controlled the first audion Q1 cut-off, are controlled the second audion Q2 cut-off by the 4th resistance R4 and pass through resistance
R11 controls the 3rd audion Q3 cut-off, and now, end A is unsettled for bottle body lamp 15 first, and bottle body lamp 15 is in the state not worked, and
Heat control unit 12 controls relay 121 and is off, and heat control unit 12 stops as electric heating kettle heating.
Also just say, when the bottle body temperature of electric kettle is not up to preset temperature, the first audion Q1, the second audion Q2
Conducting, bottle body lamp 15 is equivalent to be connected directly between the live wire L of attaching plug and zero line N, now, regardless of heat control unit
The relay 121 of 12 whether adhesive, bottle body lamp 15 is all equivalent to directly from live wire L and the zero line N power taking of attaching plug, therefore,
Can ensure that bottle body lamp 15 is in long bright state.And when the bottle body temperature of electric kettle reaches preset temperature, control chip 11
Controlling the first audion Q1, the second audion Q2 cut-off, now, the first end A of bottle body lamp 15 is unsettled, and bottle body lamp 15 is in and does not works
State.
Optionally, property for convenience of description, in the schematic diagram shown in Fig. 2, control chip 11 does not has directly and computer heating control
Unit 12 and bottle body lamp control unit 14 connect, concrete, and control chip 11 is connected by IQ1 and the first audion Q1, passes through
IQ2 and the second audion Q2 connects, and is connected by IQ3 and the 3rd audion Q3, is connected by AD1 and the second resistance R2.
This utility model embodiment provide control circuit for electric kettle, by arrange a NTC assembly, the one or three grade
Pipe, the annexation of the second triode, control chip by gathering the kettle of electric kettle from the first control line of a NTC assembly
Body temperature, and then according to bottle body temperature, utilize control chip to control the first triode, the second triode and the 3rd triode respectively
On or off state, can effectively control the light on and off state of bottle body lamp, it is achieved that bottle body lamp is in the whole heating of electric kettle
During be in long bright state, it is to avoid the duty of electric kettle is easily done according to the state of bottle body lamp and is made mistakes by user
The problem of erroneous judgement.
Embodiment three
Control a kind of replacement scheme of bottle body lamp 15 light on and off as bottle body lamp control unit 14 in above-described embodiment, refer to
Below embodiment:
The schematic diagram of the control circuit for electric kettle that Fig. 3 provides for this utility model embodiment three.As it is shown on figure 3, at this
In embodiment, the first end A of bottle body lamp control unit 14 and bottle body lamp 15 all connects the ground of control chip 11.
Concrete, as it is shown on figure 3, the bottle body lamp control unit 14 in the present embodiment, including: the 2nd NTC assembly 31.Its
In, the first control line 1 of the 2nd NTC assembly 31 connects reference voltage V DD by the first resistance R1, the second of the 2nd NTC assembly 31
First end A of control line 2 and bottle body lamp 15 all connects the ground of control chip 11, and control chip 11 passes through the second resistance R2 from second
First control line 1 of NTC assembly 31 gathers the bottle body temperature of electric kettle.Additionally, the second resistance R2 and the ground of control chip 11
Between connect have electric capacity Ce, this electric capacity Ce has the effect of voltage stabilizing.
Concrete, the 2nd NTC assembly 31 can detect the bottle body temperature of electric kettle, and control chip 11 is from the 2nd NTC assembly
First control line 1 of 31 gathers the bottle body temperature of electric kettle, and then controls the duty of heat control unit 12.Due to
First control line 1 of two NTC assemblies 31 connects reference voltage V DD by the first resistance R1, the second control line of the 2nd NTC assembly 31
2 and the first end A of bottle body lamp 15 ground all connecing control chip 11, the second end B of bottle body lamp 15 is connected to electric kettle power supply and inserts
On the zero line N of head, and the ground wire electromotive force of control chip 11 is equal with the live wire electromotive force of the attaching plug of electric kettle, therefore,
The electromotive force at bottle body lamp 15 two ends is equal to the electromotive force between the zero line N and live wire L of electric kettle attaching plug, so, bottle body lamp 15
All the time illuminating state it is in.
The control circuit for electric kettle that this utility model embodiment provides, by making bottle body lamp control unit and bottle body lamp
First end all connects the ground of control chip, that is, by the second control line of the 2nd NTC assembly and the first end of bottle body lamp are all connect
The ground of control chip, control chip gathers the bottle body temperature of electric kettle from the first control line of the 2nd NTC assembly, and controls core
The ground wire electromotive force of sheet is equal with the live wire electromotive force of the attaching plug of electric kettle again, therefore, regardless of the work of heat control unit
State how, and bottle body lamp is all equivalent to, directly from live wire and the zero line power taking of the attaching plug of electric kettle, can keep the longest
Bright state.
Embodiment four
The structural representation of the control circuit for electric kettle that Fig. 4 provides for this utility model embodiment four.The present embodiment is
On the basis of any of the above-described embodiment, control circuit for electric kettle is further illustrated.As shown in Figure 4, the present embodiment provides
Control circuit for electric kettle, also include: AC-DC conversion unit 41, voltage drop unit 42 and voltage regulation unit 43.
This AC-DC conversion unit 41, for the alternating voltage of electric kettle being converted to DC voltage, voltage drop unit 42,
For DC voltage is converted to the second voltage by the first voltage, and this second voltage is less than the first voltage, voltage regulation unit 43, uses
In the second voltage being converted to reference voltage V DD needed for control chip 11.
Physical circuit sees the schematic diagram shown in Fig. 2 and Fig. 3.
Wherein, AC-DC conversion unit 41, including: inductance L1, resistance R51 and polar capacitor E1, polar capacitor E2, this electricity
Sense L1, resistance R51 and polar capacitor E1, polar capacitor E2 form π shape circuit, for by the zero line N of electric kettle attaching plug
Unidirectional current is converted to the 220V alternating current of live wire L composition.
Voltage drop unit 42, including: conversion chip U1, electric capacity C1, electric capacity C2, resistance R52, resistance R53, polar capacitor E3,
Inductance L2, diode D3, diode D4 and polar capacitor E4, this voltage drop unit 42, for obtaining AC-DC conversion unit 41
DC voltage be converted to the second voltage by the first voltage, and this second voltage is less than the first voltage, that is, voltage drop unit 42 is used
Low-voltage DC is converted in high voltage direct current.
Voltage regulation unit 43, including: electric capacity C3, three-terminal voltage-stabilizing pipe U102, polar capacitor E5, resistance C4 and resistance R54, close
In the annexation of these above-mentioned components and parts, seeing the schematic diagram of Fig. 2 or Fig. 3, here is omitted.This voltage regulation unit 43, mainly
Low-voltage DC for voltage drop unit 42 being obtained carries out voltage stabilizing, blood pressure lowering, is converted into the base that control chip 11 is suitable for
Quasi-voltage.
Optionally, as shown in Figure 2 or Figure 3, resistance R56, resistance it are also associated with between voltage drop unit 42 and voltage regulation unit 43
R56 is mainly used in point portion voltage falling voltage drop unit 42 output.
Optionally, as shown in Figure 2 or Figure 3, the zero line N of attaching plug is also associated with resistance R55, resistance R55 and fire
Before being also associated with varistor ZNR101, and AC-DC conversion unit 41 between line L, the zero line N of attaching plug is also connected with
There is diode D5 and diode D6.Wherein, resistance R55 is current-limiting resistance, plays the effect of current limliting, and the main pin of pressure-sensitive ZNR101
To the surge phenomenon being likely to occur in circuit, play the effect of protection control circuit for electric kettle.
The control circuit for electric kettle that this utility model embodiment provides, utilizes AC-DC conversion unit by electric kettle
Alternating voltage is converted to DC voltage, and DC voltage is converted to the second voltage, and this second electricity by the first voltage by voltage drop unit
Forcing down in the first voltage, the second voltage is converted to the reference voltage needed for control chip by voltage regulation unit, and it can provide control
Voltage needed for chip, and then provide basis for the normal work of other unit in control circuit for electric kettle.
Embodiment five
The structural representation of the control circuit for electric kettle that Fig. 5 provides for this utility model embodiment five.This utility model
The control circuit for electric kettle that embodiment five provides, its operation principle realizes principle with control circuit for electric kettle shown in Fig. 1
Similar.As it is shown in figure 5, the control circuit for electric kettle shown in Fig. 5 and the difference of the control circuit for electric kettle shown in Fig. 1
Be, bottle body lamp control unit to realize principle different, and, in the present embodiment, reference voltage V DD of control chip 11
Electromotive force is equal with the live wire electromotive force of the attaching plug of electric kettle.
Concrete, as it is shown in figure 5, the control circuit for electric kettle that the present embodiment provides, including: control chip 11 and heating
Control unit 12, this control chip 11 is connected with heat control unit 12, and, this control circuit for electric kettle, also include: with
The bottle body lamp control unit 51 that control chip 11 connects.
Wherein, bottle body lamp control unit 51 is connected with the first end A of bottle body lamp 15, the electromotive force of bottle body lamp 15 first end A with
The electromotive force of the reference voltage of control chip 11 is equal, and the second end B of this bottle body lamp 15 is connected to the attaching plug of electric kettle
On zero line N, so that the electromotive force at bottle body lamp 15 two ends is equal to the electromotive force between electric kettle attaching plug live wire L and zero line N, with reality
Existing bottle body lamp is in illuminating state.
Concrete, during control circuit for electric kettle in designing the present embodiment, first by the attaching plug of electric kettle
The electromotive force of reference voltage V DD of live wire electromotive force and control chip 11 make equipotential, secondly by the first end A of bottle body lamp 15 with
Bottle body lamp control unit 51 connects, and is connected on the zero line N of electric kettle attaching plug, again by the second end B of bottle body lamp 15
This bottle body lamp control unit 51 is connected with control chip 11.Now, control chip 11 is only adopted at bottle body lamp control unit 51
The bottle body temperature of collection electric kettle, and then control the duty of heat control unit 12.
In the present embodiment, due to the electromotive force of reference voltage V DD of electromotive force and control chip 11 of bottle body lamp 15 first end A
Equal, the electromotive force of reference voltage V DD of control chip 11 is equal with the live wire electromotive force of the attaching plug of electric kettle, that is, kettle
The electromotive force of body lamp 15 first end A is equal to the live wire electromotive force of the attaching plug of electric kettle, additionally, again due to the second of bottle body lamp 15
End B is connected on the zero line N of electric kettle attaching plug, so, the electromotive force at bottle body lamp 15 two ends is inserted equal to electric kettle power supply
Electromotive force between head live wire L and zero line N, now bottle body lamp is in illuminating state.
The control circuit for electric kettle that this utility model embodiment provides, by making reference voltage V DD of control chip
Electromotive force is equal with the live wire electromotive force of the attaching plug of electric kettle, and bottle body lamp control unit is connected with the first end of bottle body lamp, should
On the zero line of the attaching plug that the second end of bottle body lamp is connected to electric kettle so that the electromotive force at bottle body lamp two ends is equal to electric hot water
Electromotive force between kettle attaching plug live wire L and zero line N, it is achieved that bottle body lamp is in long bright state, avoids user's root equally
The problem duty of electric kettle easily being made false judgment according to the state of bottle body lamp.
Fig. 6 is the schematic diagram of control circuit for electric kettle in embodiment illustrated in fig. 5.As shown in Figure 6, real at this utility model
Execute in the control circuit for electric kettle that example provides, bottle body lamp control unit 51, including: the 3rd NTC assembly 71.
First control line 1 of the 3rd NTC assembly 71 is connected with the first end A of bottle body lamp 15, and the of the 3rd NTC assembly 71
One control line 1 connects reference voltage V DD of control chip 11, and the second control line 2 of the 3rd NTC assembly 71 is connect by the 7th resistance R7
The ground of control chip 11；Control chip 11 gathers electric hot water by the 6th resistance R6 from the second control line 2 of the 3rd NTC assembly 71
The bottle body temperature of kettle, to control the duty of heat control unit 12.Additionally, the ground of the 6th resistance R6 and control chip 11 it
Between connect have electric capacity C5, this electric capacity C5 has the effect of voltage stabilizing.
Concrete, the 3rd NTC assembly 71 can detect the bottle body temperature of electric kettle, and control chip 11 is from the 3rd NTC assembly
Second control line 2 of 71 gathers the bottle body temperature of electric kettle, and then controls the duty of heat control unit 12.Due to
First control line 1 of the 3rd NTC assembly 71 is connected with the first end A of bottle body lamp 15, the first control line of the 3rd NTC assembly 71
1 reference voltage V DD connecing control chip 11, and the electromotive force of reference voltage V DD of control chip 11 is slotting with the power supply of electric kettle
The live wire electromotive force of head is equal, and therefore, the electromotive force of the first end A of bottle body lamp 15 is equal to the live wire electromotive force of attaching plug, bottle body lamp 15
The second end B be connected on the zero line N of electric kettle attaching plug, so, the electromotive force at bottle body lamp 15 two ends be equal to electric kettle
Electromotive force between the zero line N and live wire L of attaching plug, so, bottle body lamp 15 is in illuminating state all the time.
The control circuit for electric kettle that this utility model embodiment provides, by the first control line by the 3rd NTC assembly
The first end with bottle body lamp all connects the reference voltage of control chip, and control chip is from the second control line collection of the 3rd NTC assembly
The bottle body temperature of electric kettle, and the electromotive force of the reference voltage of control chip again with the live wire electromotive force of the attaching plug of electric kettle
Equal, therefore, no matter the duty of heat control unit how, and bottle body lamp is all equivalent to directly insert from the power supply of electric kettle
The live wire of head and zero line power taking, can keep growing bright state always.
Optionally, in the control circuit for electric kettle that embodiment illustrated in fig. 6 provides, this control circuit for electric kettle, also
Including: AC-DC conversion unit 61, voltage drop unit 62 and voltage regulation unit 63.
This AC-DC conversion unit 61, for the alternating voltage of electric kettle being converted to DC voltage, voltage drop unit 62,
For DC voltage is converted to the second voltage by the first voltage, and the second voltage is less than the first voltage, voltage regulation unit 63, is used for
Second voltage is converted to the reference voltage needed for control chip 11.
Concrete, the operation principle of AC-DC conversion unit 61, voltage drop unit 62 and voltage regulation unit 63 and the friendship shown in Fig. 4
DC conversion unit 41, voltage drop unit 42 are similar with voltage regulation unit 43, about AC-DC conversion unit 61, voltage drop unit 62 and
The structure of voltage regulation unit 63 forms and realizes principle, can be found in Jie in the control circuit for electric kettle shown in Fig. 2 and Fig. 3 equally
Continuing, here is omitted.
The control circuit for electric kettle provided based on the various embodiments described above, this utility model another further aspect provides a kind of electric heating
Kettle, including: bottle body body and base, further, this electric kettle, also include: be arranged on the intrinsic wiring board of bottle body.
Wherein, this wiring board, including: the control circuit for electric kettle shown in above-mentioned Fig. 1 to Fig. 4 any embodiment；Or
This wiring board, including: the control circuit for electric kettle as shown in above-mentioned Fig. 5 or Fig. 6 embodiment.About control circuit for electric kettle
Concrete structure, operation principle and beneficial effect, can refer to the detailed description of above-mentioned corresponding any embodiment, the most superfluous
State.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of
Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme.
Claims (10)
1. a control circuit for electric kettle, including: control chip (11) and heat control unit (12), described control chip
(11) it is connected with described heat control unit (12), it is characterised in that the ground wire electromotive force of described control chip (11) and electric hot water
The live wire electromotive force of the attaching plug of kettle is equal, and described circuit also includes: the bottle body lamp being connected with described control chip (11) controls
Unit (14)；
Described bottle body lamp control unit (14) is connected with first end (A) of bottle body lamp (15), the second end of described bottle body lamp (15)
(B) it is connected on the zero line (N) of described electric kettle attaching plug, described bottle body lamp control unit (14), in described control
The electromotive force ground equal to described control chip (11) of described bottle body lamp (15) first end (A) is made under the control action of coremaking sheet (11)
Line electromotive force, is in illuminating state realizing described bottle body lamp (15).
Circuit the most according to claim 1, it is characterised in that described bottle body lamp control unit (14), is additionally operable to detect institute
Stating the bottle body temperature of electric kettle, described control chip (11), for gathering described kettle from described bottle body lamp control unit (14)
Body temperature；
Described control chip (11), for according to described bottle body temperature control described heat control unit (12) duty and
The duty of described bottle body lamp control unit (14), so that described bottle body lamp control unit (14) is at described heat control unit
(12) realize described bottle body lamp (15) during work and be in illuminating state, or quitting work in described heat control unit (12)
Time realizes described bottle body lamp (15) and is in the state of not working when exceeding Preset Time.
Circuit the most according to claim 2, it is characterised in that described bottle body lamp control unit (14), including: a NTC
Assembly (21), the first audion (Q1) and the second audion (Q2)；
First control line (1) of a described NTC assembly (21) is by the first resistance (R1) and described first audion (Q1)
Colelctor electrode (c) connects, second control line (2) of a described NTC assembly (21) respectively with the collection of described second audion (Q2)
First end (A) of electrode (c) and described bottle body lamp (15) connects, and described control chip (11) passes through the second resistance (R2) from described
First control line (1) of the oneth NTC assembly (21) gathers the bottle body temperature of described electric kettle；
The emitter stage (e) of described first audion (Q1) connects the reference voltage (VDD) of described control chip (11), and the described 2nd 3
The emitter stage (e) of pole pipe (Q2) connects the ground of described control chip (11), and the base stage (b) of described first audion (Q1) passes through the 3rd
Resistance (R3), the base stage (b) of described second audion (Q2) are connected with described control chip (11) respectively by the 4th resistance (R4)
Connect.
Circuit the most according to claim 1, it is characterised in that described bottle body lamp control unit (14) and described bottle body lamp
(15) the first end (A) all connects the ground of described control chip (11).
Circuit the most according to claim 4, it is characterised in that described bottle body lamp control unit (14), including: the 2nd NTC
Assembly (31)；
First control line (1) of described 2nd NTC assembly (31) connects reference voltage (VDD) by the first resistance (R1), and described the
Second control line (2) of two NTC assemblies (31) and first end (A) of described bottle body lamp (15) all connect described control chip (11)
Ground, described control chip (11) gathers institute by the second resistance (R2) from first control line (1) of described 2nd NTC assembly (31)
State the bottle body temperature of electric kettle.
6. according to the circuit described in any one of Claims 1 to 5, it is characterised in that also include: AC-DC conversion unit (41),
Voltage drop unit (42) and voltage regulation unit (43)；
Described AC-DC conversion unit (41), for being converted to DC voltage, described pressure by the alternating voltage of described electric kettle
Fall unit (42), for described DC voltage is converted to the second voltage by the first voltage, and described second voltage is less than described
First voltage, described voltage regulation unit (43), for being converted to the benchmark needed for described control chip (11) by described second voltage
Voltage.
7. a control circuit for electric kettle, including: control chip (11) and heat control unit (12), described control chip
(11) it is connected with described heat control unit (12), it is characterised in that the electricity of the reference voltage (VDD) of described control chip (11)
Gesture is equal with the live wire electromotive force of the attaching plug of electric kettle, and described circuit also includes: be connected with described control chip (11)
Bottle body lamp control unit (51)；
Described bottle body lamp control unit (51) is connected with first end (A) of bottle body lamp (15), described bottle body lamp (15) first end (A)
Electromotive force equal with the electromotive force of the reference voltage of described control chip (11) (VDD), second end (B) of described bottle body lamp (15) is even
Receive on the zero line (N) of the attaching plug of described electric kettle, so that the electromotive force at described bottle body lamp (15) two ends is equal to described electricity
Electromotive force between hot-water bottle attaching plug live wire (L) and zero line (N), is in illuminating state realizing described bottle body lamp (15).
Circuit the most according to claim 7, it is characterised in that described bottle body lamp control unit (51), including: the 3rd NTC
Assembly (71)；
First control line (1) of described 3rd NTC assembly (71) is connected with first end (A) of described bottle body lamp (15), and described
Second control line (2) of three NTC assemblies (71) connects the ground of described control chip (11) by the 7th resistance (R7)；
Described control chip (11) is gathered from second control line (2) of described 3rd NTC assembly (71) by the 6th resistance (R6)
The bottle body temperature of described electric kettle, to control the duty of described heat control unit (12).
9. according to the circuit described in claim 7 or 8, it is characterised in that also include: AC-DC conversion unit (61), pressure drop list
Unit (62) and voltage regulation unit (63)；
Described AC-DC conversion unit (61), for being converted to DC voltage, described pressure by the alternating voltage of described electric kettle
Fall unit (62), for described DC voltage is converted to the second voltage by the first voltage, and described second voltage is less than described
First voltage, described voltage regulation unit (63), for being converted to the benchmark needed for described control chip (11) by described second voltage
Voltage.
10. an electric kettle, including: bottle body body and base, it is characterised in that also include: be arranged on described bottle body body
Interior wiring board；
Described wiring board, including: the control circuit for electric kettle described in any one of claim 1～6；Or described wiring board,
Including: the control circuit for electric kettle as described in any one of the claims 7～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620558371.6U CN205809579U (en) | 2016-06-12 | 2016-06-12 | Electric kettle control circuit and electric kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620558371.6U CN205809579U (en) | 2016-06-12 | 2016-06-12 | Electric kettle control circuit and electric kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809579U true CN205809579U (en) | 2016-12-14 |
Family
ID=58142831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620558371.6U Expired - Fee Related CN205809579U (en) | 2016-06-12 | 2016-06-12 | Electric kettle control circuit and electric kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205809579U (en) |
-
2016
- 2016-06-12 CN CN201620558371.6U patent/CN205809579U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |