CN206118075U - Electromagnetic heating arranges machine - Google Patents
Electromagnetic heating arranges machine Download PDFInfo
- Publication number
- CN206118075U CN206118075U CN201621034518.8U CN201621034518U CN206118075U CN 206118075 U CN206118075 U CN 206118075U CN 201621034518 U CN201621034518 U CN 201621034518U CN 206118075 U CN206118075 U CN 206118075U
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- Prior art keywords
- electromagnetic heating
- resistance
- secondary windings
- cooking machine
- control chip
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Abstract
The utility model discloses an electromagnetic heating arranges machine, including the electromagnetic heating circuit, the electromagnetic heating circuit includes power module, the load module for produce high frequency alternating electromagnetic field, the choke coil module, the choke coil module includes primary winding and secondary, primary winding connects power module with between the load module, secondary is in produce induced -current under primary winding's the influence, secondary's one end is the earthing terminal, secondary's the other end is the induced -current output, the detection modul, detection module with secondary links to each other, is used for being based on secondary's induced -current detects the electric current of load module. The utility model discloses technical scheme provide a measuring current with low costs, the reliability is high, circuit board layout requires simply and the little electromagnetic heating arranges machine of occupation space.
Description
Technical field
The utility model is related to field of kitchen electric appliance, more particularly to a kind of Electromagnetic Heating cooking machine.
Background technology
Cooking machine is a kind of kitchen appliance for processing various food, and it is right to realize to crush mainly in combination with whipping and heat
The process of food materials.In a kind of Electromagnetic Heating cooking machine, by the effect of high-frequency alternating electromagnetic field, vortex is produced in a metal,
To heat food materials.In order to realize the control to Electromagnetic Heating process, need to detect the electric current in electromagnetic heating circuit.
In current technology, detection electric current can be carried out by current transformer or constantan wire.But, need to be added by current transformer detection
Plus individual devices, high cost and take up room big；And the reliability that detected by constantan wire is low and disturbs big, to circuit board
Layout requirements are complicated.
Utility model content
Main purpose of the present utility model is to propose a kind of Electromagnetic Heating cooking machine, it is intended to solved the above problems, and proposes one
Plant the Electromagnetic Heating cooking machine for detecting that the low cost of electric current, reliability are high, circuit-board laying-out requirement is simple and taking up room little.
For achieving the above object, the utility model proposes Electromagnetic Heating cooking machine, including electromagnetic heating circuit, electromagnetism adds
Heater circuit includes：
Power module；
Load blocks, to produce high-frequency alternating electromagnetic field；
Choke modules, the choke modules include armature winding and secondary windings, and the armature winding is connected to institute
State between power module and the load blocks, the secondary windings produces induced-current under the influence of the armature winding,
One end of the secondary windings is earth terminal, and the other end of the secondary windings is induced-current output end；
Detection module, the detection module is connected with the secondary windings, to the induced electricity according to the secondary windings
The electric current of the stream detection load blocks.
Preferably, the choke modules also include magnet ring, and the armature winding and the secondary windings are described around being located at
On magnet ring.
Preferably, the magnet ring is put together including at least two parts, is consolidated by plastic button between each several part of the magnet ring
It is fixed.
Preferably, the secondary windings includes：
Coil, the coil is plugged on the plastic button；
Copper Foil, the Copper Foil two ends are connected to form a complete circle secondary windings with the coil two ends.
Preferably, the power module includes：
Fuse, described fuse one end is connected with the zero line of the AC power, the other end and piezo-resistance one end
It is connected；
Piezo-resistance, the piezo-resistance other end is connected with the zero line side of the AC power；
Discharge resistance, the discharge resistance is in parallel with the piezo-resistance；And,
Rectifier, the input of the rectifier is connected with the two ends of the piezo-resistance, the output end of the rectifier
Jing after with the primary windings connected in series, it is connected with the load blocks.
Preferably, the power module also includes the first electric capacity, and first electric capacity is parallel to the output of the rectifier
End.
Preferably, the load blocks include the second electric capacity, and described second electric capacity one end is connected with the armature winding, separately
One end is grounded.
Preferably, the load blocks include controlling opening for the electromagnetic heating circuit generation high-frequency alternating electromagnetic field
Close unit.
Preferably, the detection module includes：
Filter unit, the filter unit includes the RC low-pass filter circuit in parallel with the secondary windings；
Detection resistance, described detection resistance one end is connected with the induced-current output end of the secondary windings, the detection
The resistance other end is connected with the first input end of control chip, sensor current signal is converted into into voltage signal；
Control chip, the control chip is to amplify and detect the voltage signal.
Preferably, the detection module also includes partial pressure unit, and the partial pressure unit includes：
Variable resistor, described variable resistor one end is connected with the first output end of the control chip, the variable resistor
The other end be connected with the second input of the control chip；
Divider resistance, described divider resistance one end is connected with the second input of the control chip, the divider resistance
The other end ground connection；
Filter capacitor, the filter capacitor includes the 3rd electric capacity and electrochemical capacitor in parallel, with the electrochemical capacitor just
Extremely connected described filter capacitor one end is connected with the first output end of the control chip, another termination of the filter capacitor
Ground；
Diode, the forward end of the diode is connected with the first output end of the control chip, the diode
Negative end is connected with reference power source.
In technical solutions of the utility model, electromagnetic heating circuit includes power module, choke modules and load blocks, its
In, the armature winding in choke modules is connected between power module and load blocks, and load blocks are handed over to produce high frequency
Electromagnetic Field.Acted on by the electromagnetic induction between the secondary windings and armature winding in choke modules, examined by detection module
Survey secondary windings in induced-current, to obtain armature winding in electric current, further obtain the electric current in load blocks, so as to
Propose that a kind of detection low cost of electric current, reliability be high, circuit-board laying-out requirement is simple and the little Electromagnetic Heating that takes up room
Cooking machine.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, other accompanying drawings can be obtained with the structure according to these accompanying drawings.
Fig. 1 is the module diagram of the electromagnetic heating circuit of Electromagnetic Heating cooking machine in the embodiment of the utility model one；
Fig. 2 is the circuit diagram of the electromagnetic heating circuit of Electromagnetic Heating cooking machine in the embodiment of the utility model one；
Fig. 3 is the structural representation of the choke modules of Electromagnetic Heating cooking machine in the embodiment of the utility model one.
Drawing reference numeral explanation：
The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
If it is to be appreciated that relate in the utility model embodiment directionality indicate (such as upper and lower, left and right, it is front,
Afterwards ...), then directionality indicates to be only used for explaining relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality indicates also correspondingly to change therewith.
If in addition, relate to the description of " first ", " second " etc. in the utility model embodiment, should " first ", " the
Two " description etc. is only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate indication
The quantity of the technical characteristic for showing.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or cannot realize it will be understood that this technical side
The combination of case is not present, also not within the protection domain that the utility model is required.
The utility model proposes a kind of Electromagnetic Heating cooking machine.
Electromagnetic Heating cooking machine is that the kitchen appliance that crushing and Electromagnetic Heating are processed to food materials is beaten in a kind of combination.For
Electromagnetic Heating function is realized, Electromagnetic Heating cooking machine includes electromagnetic heating circuit, to produce high-frequency alternating electromagnetic field, in gold
Vortex is produced in category heating member, to heat food materials.In order to control the operation of electromagnetic heating circuit, the electric current in circuit need to be carried out
Detection.
In the utility model embodiment, as shown in figure 1, the Electromagnetic Heating cooking machine includes electromagnetic heating circuit, electromagnetism
Heater circuit includes：
Power module 20；
Load blocks 30, to produce high-frequency alternating electromagnetic field；
Choke modules 10, including armature winding 11 and secondary windings 12, armature winding 11 is connected to the He of power module 20
Between load blocks 30, secondary windings 12 produces induced-current under the influence of armature winding 11, and one end of secondary windings 12 is
Earth terminal, the other end of secondary windings 12 is induced-current output end；
Detection module 40, detection module 40 is connected with secondary windings 12, to be examined according to the induced-current of secondary windings 12
Survey the electric current of load blocks 30.
Wherein, power module 20 provides suitable power supply signal for load blocks 30, and driving load module 30 produces high frequency
Alternating electromagnetic field.The armature winding 11 of choke modules 10, armature winding are connected between power module 20 and load blocks 30
11 play the role of filtering, on the one hand filter the AC signal in power module 20, with the normal work of proof load module 30, separately
On the one hand the high-frequency signal in load blocks 30 can be avoided from affecting electrical network in turn.Electric current in armature winding 11 produces change
When, the magnetic flux of choke modules 10 accordingly produces change, so as to produce induced-current in secondary windings 12.Secondary windings 12
The number of turn be typically smaller than the number of turn of armature winding 11, the current ratio and secondary windings 12 in secondary windings 12 and armature winding 11
It is related to the turn ratio of armature winding 11, when the number of turn of secondary windings 12 is less than the number of turn of armature winding 11, secondary windings 12
In induced-current less than the electric current in armature winding 11, can according to the requirement of accuracy of detection and power consumption select it is suitable it is secondary around
12 numbers of turn of group, to obtain the suitable induced-current for detection.Detection module 40 is connected with secondary windings 12, to detect its sensing
Electric current, according to the induced-current electric current in armature winding 11 can be extrapolated, so as to draw coupled load blocks 30 in
Electric current, to realize current detecting to electromagnetic heating circuit.
In technical solutions of the utility model, the electromagnetic heating circuit of Electromagnetic Heating cooking machine includes power module 20, chokes
Circle module 10 and load blocks 30, load blocks 30 produce high-frequency alternating electromagnetic field under the driving of power module 20.Wherein, grip
Armature winding 11 in stream circle module 10 is connected to control the transmission of high-frequency signal between power module 20 and load blocks 30,
Acted on by the electromagnetic induction between the secondary windings 12 and armature winding 11 in choke modules 10, detected by detection module 40
Induced-current in secondary windings 12, to obtain armature winding 11 in electric current, further obtain the electric current in load blocks 30,
So as to propose, a kind of detection low cost of electric current, reliability be high, circuit-board laying-out requirement is simple and the little electromagnetism that takes up room
Food heating machine.
In a preferred embodiment of the present utility model, as shown in Fig. 2 power module 20 includes：
Fuse FUSE, fuse FUSE one end is connected with zero line ACL of AC power, the other end and piezo-resistance
CNR one end is connected；
Piezo-resistance CNR, the piezo-resistance CNR other end is connected with the zero line side ACN of AC power；
Discharge resistance R1, discharge resistance R1 is in parallel with piezo-resistance CNR；And,
Rectifier DB, the input of rectifier DB is connected with the two ends of piezo-resistance CNR, output end Jing of rectifier DB with
After armature winding 11 is connected, it is connected with load blocks 30.
Generally, Electromagnetic Heating cooking machine is powered by the utility grid of 220 volts, 50 hertz.When electric current is more than setting in circuit
During value, fuse FUSE will fuse, and to prevent, electric current is excessive to be caused Electromagnetic Heating cooking machine to be burned and produce potential safety hazard.When
When line voltage increase suddenly causes the voltage at piezo-resistance CNR two ends to be more than voltage threshold, its resistance will reduce rapidly, i.e. wink
Between short circuit make fuse FUSE fuse, to protect the other parts of electromagnetic heating circuit.Discharge resistance R1 is used to make when power is off
The voltage at circuit two ends was reduced to below 36 volts of safe voltage within 1 second, safe to ensure using for Electromagnetic Heating cooking machine.
In a concrete scheme, rectifier DB is bridge rectifier, alternating current AC is converted to into direct current, with driving load module
30.Load blocks 30 include controlling the switch element 31 that electromagnetic heating circuit produces high-frequency alternating electromagnetic field, concrete one
In scheme, switch element 31 is insulated gate bipolar transistor IGBT.The grid G and high frequency of insulated gate bipolar transistor IGBT
The pulse power is connected (not shown), and in the presence of high frequency pulse power supply, coil panel L vibrates with oscillating capacitance C-shaped into LC
Circuit, produces the electric current of high frequency change on coil panel L, frequency electromagnetic waves is further produced, to realize Electromagnetic Heating.
Further, power module 20 also includes the first electric capacity C1, the output end of rectifier DB is parallel to, as filtered electrical
Hold, the collective effect of armature winding 11 with choke modules 10, the DC pulse moving voltage that rectifier DB is exported further is changed
For the direct current signal for smoothing, the normal work of load blocks 30 is on the one hand ensured, on the other hand also avoid the height of load blocks 30
Frequency electric current produces interference to electrical network in turn.
Load blocks 30 also include the second electric capacity C2, and second electric capacity C2 one end is connected with armature winding 11, other end ground connection.
In the same manner, the second electric capacity C2 is also filter capacitor, and coil panel L, oscillating capacitance C and the insulated gate for being added to load blocks 30 in signal is double
Before bipolar transistor IGBT, AC signal is further filtered out, ensure the normal work of load blocks 30.
In the preferred embodiment, detection module 40 includes：
Filter unit 41, filter unit 41 includes the RC low-pass filter circuit in parallel with secondary coil 12；
Detection resistance R2, detection resistance R2 one end is connected with the induced-current output end of secondary windings 12, detection resistance R2
The other end is connected with the first input end IC8 of control chip IC, sensor current signal is converted into into voltage signal；
Control chip IC, to amplify and detectable voltage signals.
Wherein, filter unit 41 includes filter resistance R4 and the 4th electric capacity C4 in parallel, to filter high-frequency signal, it is to avoid
Interference, improves accuracy of detection.The sensor current signal of secondary windings 12 is converted into the induced electricity at its two ends by detection resistance R2
Pressure signal, by the first input end IC8 of control chip IC control chip IC is input into, and is exaggerated and is examined in control chip IC
Survey.
Further, in order to avoid the induced voltage signal for amplifying damages control chip IC, detection module 40 also includes dividing
Pressure unit 42, partial pressure unit 42 includes：
Variable resistor VR, variable resistor VR one end is connected with the first output end IC17 of control chip, variable resistor VR's
The other end is connected with the second input IC19 of control chip；
Divider resistance R3, divider resistance R3 one end is connected with the second input IC19 of control chip, divider resistance R3's
The other end is grounded；
Filter capacitor, filter capacitor includes the 3rd electric capacity C3 and electrochemical capacitor EC in parallel, the positive pole with electrochemical capacitor EC
Connected filter capacitor one end is connected with the first output end IC17 of control chip, the other end ground connection of filter capacitor；
The forward end of diode D, diode D is connected with the first output end IC17 of control chip, the negative end of diode D
It is connected with reference power source.
According to the concrete species of control chip IC, corresponding reference voltage, in the present embodiment, reference power source are selected
Voltage is 5 volts.AC signal is filtered by filter capacitor, the reliability of detection is further improved.When diode D forward end with
When negative end voltage difference is more than its threshold voltage, diode D conductings, conversely, diode D cut-offs.When the first of control chip IC
During threshold voltage sum of the output voltage of output end IC17 more than reference voltage and diode D, diode D is on
State, now the voltage of the first output end IC17 be clamped near 5 volts of reference voltage, i.e. the effect of diode D is to protect
The voltage for holding the first output end IC17 is not more than reference voltage, to protect control chip IC, it is to avoid be burned.According to variable
The resistance ratio of resistance VR and divider resistance R3, is allocated to the voltage scale of the first output end IC17, and by control core
The second input IC19 of piece IC is input into again, to be detected, and further by control chip IC to Electromagnetic Heating cooking
The Electromagnetic Heating process of machine is controlled.By the resistance for changing variable resistor VR, dividing ratios can be suitably regulated.
In the preferred embodiment, as shown in figure 3, choke modules 10 also include magnet ring 13, armature winding 11 and secondary
Winding 12 is around being located on magnet ring 13.The magnetic induction intensity of choke modules 10 can be strengthened by magnet ring 13, to improve accuracy of detection.
Each device of above-mentioned electromagnetic heating circuit, in addition to coil panel L, may be provided on printed circuit board (PCB), to realize as far as possible little
Electromagnetic heating circuit is set in assembly space.For the ease of armature winding 11 and secondary windings 12 dress on a printed circuit
Match somebody with somebody, magnet ring 13 is put together including at least two parts, is fixed by plastic button 133 between each several part of magnet ring.Part I magnet ring
131 and the two ends of Part II magnet ring 132 be respectively arranged with the buckle being adapted, after upper and lower grafting coordinates, further by plastics
Button 133 is socketed in outside less Part II magnet ring 132, is connected with further consolidation.Using plastic button 133 can avoid metal or
Magnetic material is interfered to the electromagnetic property of choke modules 10.The armature winding 11 of choke modules 10 is good in prior winding
Afterwards, it is connected to above from the indentation, there set of Part I magnet ring 131, and secondary windings 12 includes the line being plugged on plastic button 133
Circle 121 and Copper Foil 122, the two ends of Copper Foil 122 are connected to form a complete circle secondary windings 12 with the two ends of coil 121, wherein, Copper Foil
122 are arranged in advance on a printed circuit.The set-up mode of above-mentioned choke modules 10 is simple and convenient, so as to improve circuit board
Efficiency of assembling.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become
Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of Electromagnetic Heating cooking machine, including electromagnetic heating circuit, it is characterised in that the electromagnetic heating circuit includes：
Power module；
Load blocks, to produce high-frequency alternating electromagnetic field；
Choke modules, the choke modules include armature winding and secondary windings, and the armature winding is connected to the electricity
Between source module and the load blocks, the secondary windings produces induced-current under the influence of the armature winding, described
One end of secondary windings is earth terminal, and the other end of the secondary windings is induced-current output end；
Detection module, the detection module is connected with the secondary windings, to be examined according to the induced-current of the secondary windings
Survey the electric current of the load blocks.
2. Electromagnetic Heating cooking machine as claimed in claim 1, it is characterised in that the choke modules also include magnet ring, institute
Armature winding and the secondary windings are stated around being located on the magnet ring.
3. Electromagnetic Heating cooking machine as claimed in claim 2, it is characterised in that the magnet ring include at least two parts split and
Into being fixed by plastic button between each several part of the magnet ring.
4. Electromagnetic Heating cooking machine as claimed in claim 3, it is characterised in that the secondary windings includes：
Coil, the coil is plugged on the plastic button；
Copper Foil, the Copper Foil two ends are connected to form a complete circle secondary windings with the coil two ends.
5. Electromagnetic Heating cooking machine as claimed in claim 1, it is characterised in that the power module includes：
AC power；
Fuse, described fuse one end is connected with the zero line of the AC power, and the other end is connected with piezo-resistance one end；
Piezo-resistance, the piezo-resistance other end is connected with the zero line side of the AC power；
Discharge resistance, the discharge resistance is in parallel with the piezo-resistance；And,
Rectifier, the input of the rectifier is connected with the two ends of the piezo-resistance, output end Jing of the rectifier with
After the primary windings connected in series, it is connected with the load blocks.
6. Electromagnetic Heating cooking machine as claimed in claim 5, it is characterised in that the power module also includes the first electric capacity,
First electric capacity is parallel to the output end of the rectifier.
7. Electromagnetic Heating cooking machine as claimed in claim 1, it is characterised in that the load blocks include the second electric capacity, institute
State second electric capacity one end to be connected with the armature winding, other end ground connection.
8. Electromagnetic Heating cooking machine as claimed in claim 1, it is characterised in that the load blocks include controlling described
Electromagnetic heating circuit produces the switch element of high-frequency alternating electromagnetic field.
9. Electromagnetic Heating cooking machine as claimed in claim 1, it is characterised in that the detection module includes：
Filter unit, the filter unit includes the RC low-pass filter circuit in parallel with the secondary windings；
Detection resistance, described detection resistance one end is connected with the induced-current output end of the secondary windings, the detection resistance
The other end is connected with the first input end of control chip, sensor current signal is converted into into voltage signal；
Control chip, the control chip is to amplify and detect the voltage signal.
10. Electromagnetic Heating cooking machine as claimed in claim 9, it is characterised in that the detection module also includes partial pressure unit,
The partial pressure unit includes：
Variable resistor, described variable resistor one end is connected with the first output end of the control chip, described variable-resistance another
One end is connected with the second input of the control chip；
Divider resistance, described divider resistance one end is connected with the second input of the control chip, the divider resistance it is another
One end is grounded；
Filter capacitor, the filter capacitor includes the 3rd electric capacity and electrochemical capacitor in parallel, the positive pole phase with the electrochemical capacitor
Described filter capacitor one end even is connected with the first output end of the control chip, the other end ground connection of the filter capacitor；
Diode, the forward end of the diode is connected with the first output end of the control chip, the negative sense of the diode
End is connected with reference power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034518.8U CN206118075U (en) | 2016-08-31 | 2016-08-31 | Electromagnetic heating arranges machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034518.8U CN206118075U (en) | 2016-08-31 | 2016-08-31 | Electromagnetic heating arranges machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206118075U true CN206118075U (en) | 2017-04-19 |
Family
ID=58520302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621034518.8U Expired - Fee Related CN206118075U (en) | 2016-08-31 | 2016-08-31 | Electromagnetic heating arranges machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206118075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787061A (en) * | 2016-08-31 | 2018-03-09 | 广东美的生活电器制造有限公司 | Electromagnetic heating cooking machine |
| CN108966385A (en) * | 2017-05-17 | 2018-12-07 | 马勒国际有限公司 | Heater for motor vehicle |
| WO2024214159A1 (en) * | 2023-04-10 | 2024-10-17 | 日本たばこ産業株式会社 | Aerosol generation system |
-
2016
- 2016-08-31 CN CN201621034518.8U patent/CN206118075U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787061A (en) * | 2016-08-31 | 2018-03-09 | 广东美的生活电器制造有限公司 | Electromagnetic heating cooking machine |
| CN108966385A (en) * | 2017-05-17 | 2018-12-07 | 马勒国际有限公司 | Heater for motor vehicle |
| WO2024214159A1 (en) * | 2023-04-10 | 2024-10-17 | 日本たばこ産業株式会社 | Aerosol generation system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |