CN108449818A - A kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique - Google Patents
A kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique Download PDFInfo
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- CN108449818A CN108449818A CN201810455455.0A CN201810455455A CN108449818A CN 108449818 A CN108449818 A CN 108449818A CN 201810455455 A CN201810455455 A CN 201810455455A CN 108449818 A CN108449818 A CN 108449818A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 235000021156 lunch Nutrition 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 4
- 210000002837 heart atrium Anatomy 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 206010037660 Pyrexia Diseases 0.000 abstract 1
- 235000013305 food Nutrition 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/20—Lunch or picnic boxes or the like
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cookers (AREA)
- General Induction Heating (AREA)
Abstract
The present invention discloses a kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique, including upper cover, inner pan body, pedestal, cavity is arranged in chassis interior, the LC heater circuits of control system include capacitance C10, capacitance C11, inductance L1 and external heating coil, the resistance R1 in inductance L1 connection capacitances C10, capacitance C11 and comparison circuit；The one end capacitance C10 connects the resistance R1 in inductance L1, capacitance C11 and comparison circuit；The one end capacitance C11 connects the resistance R1 in inductance L1, capacitance C10, connector P3 and comparison circuit, the other end be connected to the drain electrode of the metal-oxide-semiconductor Q1 of driving circuit, connector P4 and comparison circuit resistance R4；External heating coil is connected respectively to connector P3, P4, and external heating coil is arranged in the cavity of pedestal, and the inner pan body is made from metal.The present invention uses direct current supply, and the output of IH computer heating controls, makes calandria quick heating and fever is uniform.
Description
Technical field
The present invention relates to daily-use electrical appliance technical fields more particularly to a kind of based on DC low-voltage electromagnetic heating technique
Heat-insulating lunch box.
Background technology
In the prior art, the supplier of heat-insulating lunch box generally use Electrothermic wire or electric heating film as heat source, to just
When interior food carries out heating and thermal insulation.As on May 23rd, 2001 bulletin authorize application No. is 99123712.9 Chinese inventions
Patent carry-around self-heating lunch box, heating device is arranged in it below lunch box, and the heating device utilizes storage from an accumulator is had
Battery provides electric energy, generates the food stored in the direct or indirect lunch box capable of heating of mode of steam with electric heating warming, steam by
Clear water heating gained in aquamanile in Self-heat dinner pail.Food is set to be heated although it can provide heat, by
In it from accumulator is had, keep the volume of product larger, moreover, circuit structure is also more complex.Existing other electric heating types
Incubation canteen is mostly to be arranged in lunch box lower part with heater strip or membrane-like heater, is additionally provided with and is limited using bimetal leaf or PTC
The limit temperature part of temperature, heater are electrically connected through the warm part of limit with alternating current.The shortcomings that this electric heating mess tin, is a lack of portability, needs
Interior has the place of power outlet to use.
Invention content
The purpose of the present invention is to provide a kind of slim and graceful portable heat preservation box lunches based on DC low-voltage electromagnetic heating technique
Low-voltage DC is changed into the high voltagehigh frequency alternating current more than audio using LC resonance circuit, which is exchanged by box
Electricity is added on electromagnetic induction heating coil, thus generates high-frequency alternating magnetic field, is generated in the metal inner pan body of boxed cassette powerful
Vortex generate.Vortex completes conversion of the electric energy to thermal energy when the internal resistance of pot body being overcome to flow.To overcome present in the prior art
Deficiency.
The present invention the technical solution to solve the technical problem is that：A kind of heat preservation based on DC low-voltage electromagnetic heating technique is just
Work as box, the heat-insulating lunch box includes upper cover, inner pan body, pedestal, control system, and inner pan body is placed in the atrium of pedestal, bottom
Seat is internal to be arranged cavity, and control system includes CUP sequence circuits, driving circuit, temperature sensing circuit, further includes low pressure peace
Full power-supplying circuit, LC vibration high powers heater circuit, comparison circuit, LC vibration high power heater circuits include capacitance C10,
Capacitance C11, inductance L1 and external heating coil, comparison circuit include resistance R1, R2, R4, R5, capacitance C9, C14；Inductance L1
One end connects the anode of power vd D1, and the other end connects the resistance R1 in capacitance C10, capacitance C11 and comparison circuit；Capacitance
The one end C10 connects the resistance R1 in inductance L1, capacitance C11 and comparison circuit；The one end capacitance C11 connects inductance L1, capacitance
Resistance R1 in C10, connector P3 and comparison circuit.The other end is connected to the drain electrode of the metal-oxide-semiconductor Q1 of driving circuit, connector
The resistance R4 of P4 and comparison circuit；External heating coil one end is connected to connector P3, and the other end is connected to connector P4；Institute
It states external heating coil to be arranged in the cavity of pedestal, the inner pan body is made from metal.
It includes capacitance C10, capacitance C11, inductance L1 and external heating coil, inductance L1 that LC, which vibrates high power heater circuit,
One end connects the anode of power vd D1, and the other end connects the resistance R1 in capacitance C10, capacitance C11 and comparison circuit；Capacitance
The one end C10 connects the resistance R1 in inductance L1, capacitance C11 and comparison circuit；The one end capacitance C11 connects inductance L1, capacitance
Resistance R1 in C10, connector P3 and comparison circuit.The other end is connected to the drain electrode of the metal-oxide-semiconductor Q1 of driving circuit, connector
The resistance R4 of P4 and comparison circuit；External heating coil one end is connected to connector P3, and the other end is connected to connector P4.
Driving circuit includes capacitance C15, capacitance C16, resistance R8, resistance R9, resistance R11, metal-oxide-semiconductor Q1, triode Q2, three
Pole pipe Q3, triode Q4, metal-oxide-semiconductor Q1 source electrodes connect the capacitance C11 and external heating coil, ratio of LC vibration high power heater circuits
Compared with the resistance R4 in circuit, drain electrode connection ground, controlled stage connects resistance R11；The one end resistance R11 connects metal-oxide-semiconductor Q1 controlled stages, separately
The emitter of one end connecting triode Q2, triode Q3；Triode Q2 collectors connect power vd D2, and triode Q2 emitters connect
Connect the emitter and resistance R11 of triode Q3, the base stage of triode Q2 base stage connecting triodes Q3, the collector of triode Q4
With resistance R8；Triode Q3 grounded collectors, the emitter of emitter connecting triode Q2 and resistance R11, base stage connection three
The base stage of pole pipe Q2, the collector of triode Q4 and resistance R8；Triode Q4 emitters ground connection, collector connecting triode Q2 and
Base stage and resistance R8, the base stage of triode Q3 connects resistance R9 and CUP sequence circuit；Capacitance C15, the one end capacitance C16
Connect power vd D2, other end ground connection；The one end resistance R8 connects power vd D2, the base stage of other end connecting triode Q2 and three poles
The base stage and triode Q4 collectors of pipe Q3；The one end resistance R9 connects power vd D2, the base stage of other end connecting triode Q4
And CUP sequence circuits.
Buzzer circuit includes buzzer LS1, capacitance C114.The one end buzzer LS1 connects power vd D3, other end connection
The anode of capacitance C114, the capacitance C114 other ends connect CUP sequence circuits.
CUP sequence circuits include integrated chip U1, capacitance C7 and capacitance C8, the first end and third of integrated chip U1
End connection, second end ground connection, third end connects the cathode of buzzer circuit capacitance C114；Four, the 5th ends connect key-press input
Circuit, the 6th end are hanging；7th end connects power vd D3, and the 8th end connects the first foot of connector P21；9th end connects power supply
VDD3；Tenth end connect temperature sensing circuit, the 11st, the 12nd end be separately connected breathing circuit for lamp light emitting diode L2 and
The poles N of light emitting diode L3, the 13rd end connect the first end of this chip；14th end connects resistance R1, the electricity of comparison circuit
Hinder R2 and capacitance C9；15th end connects resistance R4, the 5th resistance R5 and the capacitance C14 of comparison circuit；Tenth six end connecting drives
The resistance R9 and triode Q4 base stages of dynamic circuit；Capacitance C7 connects power vd D3, other end ground connection with the one end capacitance C8.
Breathing circuit for lamp includes light emitting diode L2, L3, resistance R13, R14, and the poles P of light emitting diode L2 connect resistance
The pole R13, N connects CUP sequence circuits；The poles the P poles connection resistance R14, N connection CUP programs control electricity of light emitting diode L3
Road, the one end resistance R13 connect the poles P of light emitting diode L2, and one end connects power vd D3, and the one end resistance R14 connects light-emitting diodes
The poles P of pipe L3, other end connection power vd D3.
Temperature sensing circuit includes resistance R3, R6, capacitance C12, C13 and connector P20, and the one end resistance R3 connects resistance
R6, capacitance C12, connector P20, the resistance R3 other ends connect power vd D3；The one end resistance R6 connects resistance R3, capacitance C12, connects
Device P20 is met, the other end connects capacitance C13 and CUP sequence circuit；The one end connector P20 connects resistance R3, capacitance C12, electricity
Hinder R6, other end connection ground；The one end capacitance C12 connects resistance R3, connector P20, resistance R6, other end connection ground；Capacitance C13
Connect resistance R6, CUP sequence circuit.
Low-voltage safety power supply power supply circuit includes capacitance C1, C2, C3, C4, C5, C6 and voltage-stabiliser tube VR1, VR2, C1 and C2 mono-
The input terminal of end connection power vd D1 and voltage-stabiliser tube VR1, other end ground connection, capacitance C3, C4 are separately connected the output of voltage-stabiliser tube VR1
The input terminal of end and voltage-stabiliser tube VR2；The output end of capacitance C5, C6 connection power vd D3 and voltage-stabiliser tube VR2；Voltage-stabiliser tube VR1 is defeated
Enter end connection power vd D1 and capacitance C1, C2, third end connection capacitance C3, C4 of VR1, the input terminal of voltage-stabiliser tube VR2.
Comparison circuit includes resistance R1, R2, R4, R5, capacitance C9, C14, the one end resistance R1 connect capacitance C10, C11 and
External heating coil, the other end connect capacitance C9, resistance R2 and CUP sequence circuit；The one end resistance R4 connects capacitance
C11, the drain electrode of metal-oxide-semiconductor Q1 and external heating coil, the other end connect C14, R5 and CUP sequence circuit；Resistance R2
Connect R1, C9 and CUP sequence circuit；Resistance R5 connection R4, C14 and CUP sequence circuits, capacitance C9 connection electricity
Hinder R1, R2 and CUP sequence circuit；Capacitance C14 connection resistance R4, R5 and CUP sequence circuits.
Button inputting circuits include button S2, S3, and the one end button S2, S3 is connected to CUP sequence circuits, and the other end connects
It is connected to ground.
The beneficial effects of the invention are as follows：
1) present invention for conventional vacuum boxed cassette presently, there are the not portable or the problems such as big that takes up space carry out
It improves, so that entire metal inner pan body is become a heat source using electromagnetism IH heating techniques heating equalization performance, in temperature controlling party
Face cooperation software accurately controls temperature.Make control errors at 2 degree or so.At energy saving aspect, the dormant technology of chip, cooperation are used
Software, which accurately controls, reaches energy saving purpose.
2) low-voltage DC is changed into the high voltagehigh frequency alternating current more than audio by the present invention using LC resonance circuit, by this
High voltagehigh frequency alternating current is added on electromagnetic induction heating coil, thus generates high-frequency alternating magnetic field, and the magnetic line of force penetrates in metal
Pot body generates larger vortex in pot body.Vortex completes conversion of the electric energy to thermal energy when the internal resistance of pot body being overcome to flow.
3) present electromagnetism IH heating techniques have been widely used on the household appliances such as electromagnetic oven, electric cooker, they
It is to use power frequency alternating current that one, which has in common that power supply all, and this power supply mode is used in some portable mobile occasions to be had very greatly
Limitation.And the present invention can make the technology be suitable for portable and mobile occasion using low-voltage dc power supply.In the present invention
Control circuit be suitable for being less than 38V direct current supplys below, common batteries can also meet the requirements, and reach high power IH heating
Control output, and make calandria quick heating and generate heat uniform.
Description of the drawings
Fig. 1 is the heat-insulating lunch box schematic block circuit diagram of the present invention.
Fig. 2 is the heat-insulating lunch box circuit diagram of the present invention.
Fig. 3 is the heat-insulating lunch box low-voltage safety power supply power supply circuit of the present invention.
Fig. 4 is the heat-insulating lunch box temperature sensing circuit figure of the present invention.
Fig. 5 is the heat-insulating lunch box breath light circuit diagram of the present invention.
Fig. 6 is the heat-insulating lunch box button inputting circuits and CUP sequence circuit figures of the present invention.
Fig. 7 is the heat-insulating lunch box driving circuit figure of the present invention.
Fig. 8 is the heat-insulating lunch box LC vibration high power heater circuit and comparison circuit figure of the present invention.
Fig. 9 is the heat-insulating lunch box buzzer circuit figure of the present invention.
Figure 10 is the Portable box structure schematic diagram of the present invention.
Figure 11 is the external heating coil scheme of installation of boxed cassette of the present invention.
Figure 12 is the another scheme of installation of the external heating coil of boxed cassette of the present invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should broadly understood, for example, it may be being fixedly connected；It may be a detachable connection or integral type connects；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
In the concrete meaning of the present invention.
Referring to Fig. 1-9, the control circuit composition of heat-insulating lunch box of the invention includes：CUP sequence circuits, driving electricity
Road, temperature sensing circuit, low-voltage safety power supply power supply circuit, LC vibration high powers heater circuit, comparison circuit etc..Wherein, LC
It includes capacitance C10, capacitance C11, inductance L1 and external heating coil to vibrate high power heater circuit, and comparison circuit includes resistance
R1, R2, R4, R5, capacitance C9, C14；The one end inductance L1 connects the anode of power vd D1, and the other end connects capacitance C10, capacitance C11
And the resistance R1 in comparison circuit；The one end capacitance C10 connects the resistance R1 in inductance L1, capacitance C11 and comparison circuit, separately
One end is connected to ground；The one end capacitance C11 connects the resistance R1 in inductance L1, capacitance C10, connector P3 and comparison circuit.Separately
One end be connected to the drain electrode of the metal-oxide-semiconductor Q1 of driving circuit, connector P4 and comparison circuit resistance R4；External heating coil one
End is connected to connector P3, and the other end is connected to connector P4.The circuit is whole system Key Circuit.Purpose is to generate resonance
Electric current.The high-frequency resonant electric current generates alternating flux in coil, to generate vortex in pot body.
Low-voltage safety power supply power supply circuit：Electric routing capacitance C1, C2, C3, C4, C5, C6 and VR1, VR2 compositions.Wherein
The ends Vout of VR1 and VR2 can obtain voltage needed for project according to actual needs.They provide required for remaining circuit module
Burning voltage.
Temperature sensing circuit：By resistance R3, R6, capacitance C12, C13, P2 compositions.Wherein P20 and R3 series connection, the external temperature of P20
Spend sensor.CPU reads the partial pressure value, carries out analog-to-digital conversion.R6, C12, C13 constitute filter circuit, which can also make it into
He is similar to filter circuit.
Breathe circuit for lamp：It is made of inductance L2, L3 and resistance R13, R14.It is controlled by CPU, is used to indicate work at present shape
State.
Driving circuit：By Q1, Q2, Q3, Q4, C15, C16, R8, R9, R11 form push-pull circuit.It is CUP that purpose, which is arranged,
Control signal PPG be transformed into can drive Q1 (metal-oxide-semiconductor, thyristor, IGBT pipe) acceptable signal .Q1 be system core
Device.
Detect comparison circuit：By R1.R2, R4, R5 and C9, C14 compositions.The purpose of circuit setting is by detecting resonance
The sequential of voltage to comparator, after obtaining the information that information notifies CPU, CPU to receive comparator by comparing advising by comparator
The fixed time exports control signal to driving circuit in time.
CUP sequence circuits：It is made of U1, C7, C8.
Buzzer circuit：It is made of LS1 and C114.Purpose is outwardly to provide voice signal.
The purpose of low-voltage safety power supply power supply circuit, is provided to driving circuit and CUP control circuits and other modular circuits
Power supply needed for various.The purpose of temperature sensing circuit, is perception heating element temperature and provides analog signal to CUP control circuits, leads to
The digital signal that CUP internal proprietary AD converters are converted into temperature is crossed, analog-to-digital conversion is completed.To which for CUP, processing carries in next step
For information.The purpose for breathing circuit for lamp setting is outwardly to show which kind of working condition circuit is currently in.Driving circuit is arranged
Purpose be precisely to provide the break-make of Pulse Width Control metal-oxide-semiconductor, thyristor, IGBT pipes.LC resonance high power heater circuit is arranged
Purpose be to generate vibration harmonics and alternating magnetic field.The purpose of detection comparison circuit setting is to detect the sequential shape of LC vibrating circuits
State provides accurately PPG for CPU controls and controls signal.The purpose of CPU sequence circuits is to be coordinated to whole system, controlled
It makes and uses.The purpose of button inputting circuits setting is to make the extraneous start and stop that can control whole system.Buzzer circuit setting
Purpose is outwardly to provide acoustic information.Key to the invention is that using DC power supply and Primary Component C10, C11, L1, Q1 with
And comparison circuit.
The signal of heat-insulating lunch box flows to：LC shakes high power heater circuit and generates resonance current, more electric by detecting
Road detects the sequential of resonance potential, and comparator or CUP, CUP is supplied to by analysis, to judge and processing precisely releases control
Signal PPG processed, PPG control the break-make of metal-oxide-semiconductor, thyristor, IGBT pipes by controlling driving circuit.CPU is according to current work
State shows information by breath light.Button inputting circuits notify CPU by reading extraneous input information.Temperature detection
Circuit provides information to CPU and makes a policy by detecting temperature of boiler.
Referring to Figure 10-11, heat-insulating lunch box includes upper cover 1, one can be used to contain prepared food (such as meal, dish, steamed stuffed bun etc)
Inner pan body 2, the pedestal 3 that can accommodate above-mentioned inner pan body, inner pan body 2 are placed in the atrium 31 of pedestal 3, and inner pan body is that have an opening
Canister upward serves as food box, and in its side setting hooking element (such as clasp), metal inner pan body is held in
The upper cover gab of the cover thereon.Cavity is arranged in chassis interior, and cavity includes side ring chamber and bottom cavity, and LC, which is arranged, in side ring chamber vibrates height
The external heating coil 4 of power heater circuit, external heater coil wraps place control electricity respectively in side ring cavity wall in bottom cavity
Road plate 5 and lithium battery 6.In the outer wall setting switch of pedestal, indicator light (not shown), NTC temperature sensing holes are set in bottom cavity upper wall,
NTC temperature-sensitive heads are projected upwards out of hole, the temperature for perceiving inner pan body, NTC temperature-sensitive head cut-in temperature detection circuits.
Referring to Figure 12, as an improvement, external heating coil 4 may be configured as flat loop coil disk and be placed on bottom
The top of chamber.
Although an embodiment of the present invention has been shown and described, it will be understood by those of ordinary skill in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent replacement, without creative work improvements introduced etc., should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique, the heat-insulating lunch box include upper cover, inner pan body,
Pedestal, control system, inner pan body are placed in the atrium of pedestal, and cavity is arranged in chassis interior, it is characterised in that：The control system
System includes CUP sequence circuits, driving circuit, temperature sensing circuit, further includes low-voltage safety power supply power supply circuit, LC vibrations
High power heater circuit, comparison circuit, LC vibration high power heater circuits include capacitance C10, capacitance C11, inductance L1 and outer
Heating coil is connect, comparison circuit includes resistance R1, R2, R4, R5, capacitance C9, C14；The one end inductance L1 is connecting power vd D1 just
Pole, the other end connect the resistance R1 in capacitance C10, capacitance C11 and comparison circuit；The one end capacitance C10 connects inductance L1, capacitance
Resistance R1 in C11 and comparison circuit；The one end capacitance C11 connects inductance L1, capacitance C10, connector P3 and comparison circuit
In resistance R1, the other end be connected to the drain electrode of the metal-oxide-semiconductor Q1 of driving circuit, connector P4 and comparison circuit resistance R4；
External heating coil one end is connected to connector P3, and the other end is connected to connector P4；The external heating coil is arranged the bottom of at
In the cavity of seat, the inner pan body is made from metal.
2. the heat-insulating lunch box according to claim 1 based on DC low-voltage electromagnetic heating technique, it is characterised in that：The ratio
One end resistance R1 compared with circuit connects capacitance C10, C11 and external heating coil, the other end connect capacitance C9, resistance R2 and
CUP sequence circuits；The one end resistance R4 connects capacitance C11, the drain electrode of metal-oxide-semiconductor Q1 and external heating coil, and the other end connects
Connect C14, R5 and CUP sequence circuit；Resistance R2 connection R1, C9 and CUP sequence circuits；Resistance R5 connections R4,
C14 and CUP sequence circuits, capacitance C9 connection resistance R1, R2 and CUP sequence circuits；Capacitance C14 connection resistance
R4, R5 and CUP sequence circuit.
3. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：It is described low
It includes capacitance C1, C2, C3, C4, C5, C6 and voltage-stabiliser tube VR1, VR2 to press safety power supply power supply circuit, and capacitance C1 is connected with the one end C2
The input terminal of power vd D1 and voltage-stabiliser tube VR1, the other end ground connection, capacitance C3, C4 be separately connected voltage-stabiliser tube VR1 output end and
The input terminal of voltage-stabiliser tube VR2；The output end of capacitance C5, C6 connection power vd D3 and voltage-stabiliser tube VR2；Voltage-stabiliser tube VR1 input terminals connect
Connect power vd D1 and capacitance C1, C2, third end connection capacitance C3, C4 of VR1, the input terminal of voltage-stabiliser tube VR2.
4. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：The drive
Dynamic circuit includes capacitance C15, capacitance C16, resistance R8, resistance R9, resistance R11, metal-oxide-semiconductor Q1, triode Q2, triode Q3, three
Pole pipe Q4, metal-oxide-semiconductor Q1 source electrodes connect in the capacitance C11 and external heating coil, comparison circuit of LC vibration high power heater circuits
Resistance R4, drain electrode connection ground, controlled stage connects resistance R11；The one end resistance R11 connects metal-oxide-semiconductor Q1 controlled stages, other end connection
The emitter of triode Q2, triode Q3；Triode Q2 collectors connect power vd D2, triode Q2 emitter connecting triodes
The emitter and resistance R11 of Q3, the base stage of triode Q2 base stage connecting triodes Q3, the collector and resistance of triode Q4
R8；Triode Q3 grounded collectors, the emitter of emitter connecting triode Q2 and resistance R11, base stage connecting triode Q2
Base stage, triode Q4 collector and resistance R8；Triode Q4 emitters ground connection, collector connecting triode Q2 and triode
Base stage and resistance R8, the base stage of Q3 connects resistance R9 and CUP sequence circuit；Capacitance C15, the one end capacitance C16 connection electricity
Source VDD2, other end ground connection；The one end resistance R8 connects power vd D2, the base stage of other end connecting triode Q2 and triode Q3's
Base stage and triode Q4 collectors；The one end resistance R9 connects power vd D2, the base stage and CUP of other end connecting triode Q4
Sequence circuit.
5. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：The temperature
Degree detection circuit includes resistance R3, R6, capacitance C12, C13 and connector P20, the one end resistance R3 connect resistance R6, capacitance C12,
Connector P20, the resistance R3 other ends connect power vd D3；The one end resistance R6 connects resistance R3, capacitance C12, connector P20, separately
One end connects capacitance C13 and CUP sequence circuit；The one end connector P20 connects resistance R3, capacitance C12, resistance R6, another
End connection ground；The one end capacitance C12 connects resistance R3, connector P20, resistance R6, other end connection ground；Capacitance C13 connection resistance
R6, CUP sequence circuit.
6. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：Further include
Buzzer circuit, the buzzer circuit include buzzer LS1, capacitance C114.The one end buzzer LS1 connects power vd D3, separately
One end connects the anode of capacitance C114, and the capacitance C114 other ends connect CUP sequence circuits.
7. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：Further include
Circuit for lamp is breathed, the breathing circuit for lamp includes light emitting diode L2, L3, resistance R13, R14, and the poles P of light emitting diode L2 connect
The poles connecting resistance R13, N connect CUP sequence circuits；The poles the P poles connection resistance R14, N of light emitting diode L3 connect CUP programs
Control circuit, the one end resistance R13 connect the poles P of light emitting diode L2, and one end connects power vd D3, the one end resistance R14 connection hair
The poles P of optical diode L3, other end connection power vd D3.
8. the heat-insulating lunch box according to claim 2 based on DC low-voltage electromagnetic heating technique, it is characterised in that：Further include
Button inputting circuits, the button inputting circuits include button S2, S3, and the one end button S2, S3 is connected to CUP programs control electricity
Road, the other end are connected to ground.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167434A (en) * | 1997-08-08 | 1999-03-09 | Miyaden:Kk | Temperature control apparatus in high-frequency induction heating |
| KR20080003733U (en) * | 2007-03-02 | 2008-09-05 | 쿠쿠전자주식회사 | High frequency induction heating appliance for cooking with inverter type by phase locked loop method |
| CN101384108A (en) * | 2007-09-07 | 2009-03-11 | 广东亿龙电器股份有限公司 | Power controller for induction heating equipment |
| JP2010097960A (en) * | 2010-02-04 | 2010-04-30 | Mitsubishi Electric Corp | Induction heating cooker |
| CN102970800A (en) * | 2012-11-20 | 2013-03-13 | 顺德职业技术学院 | LED (Light Emitting Diode) driving circuit |
| CN105299910A (en) * | 2015-11-05 | 2016-02-03 | 顺德职业技术学院 | Safe electric water heater |
| CN208143529U (en) * | 2018-05-14 | 2018-11-23 | 顺德职业技术学院 | A kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique |
-
2018
- 2018-05-14 CN CN201810455455.0A patent/CN108449818B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167434A (en) * | 1997-08-08 | 1999-03-09 | Miyaden:Kk | Temperature control apparatus in high-frequency induction heating |
| KR20080003733U (en) * | 2007-03-02 | 2008-09-05 | 쿠쿠전자주식회사 | High frequency induction heating appliance for cooking with inverter type by phase locked loop method |
| CN101384108A (en) * | 2007-09-07 | 2009-03-11 | 广东亿龙电器股份有限公司 | Power controller for induction heating equipment |
| JP2010097960A (en) * | 2010-02-04 | 2010-04-30 | Mitsubishi Electric Corp | Induction heating cooker |
| CN102970800A (en) * | 2012-11-20 | 2013-03-13 | 顺德职业技术学院 | LED (Light Emitting Diode) driving circuit |
| CN105299910A (en) * | 2015-11-05 | 2016-02-03 | 顺德职业技术学院 | Safe electric water heater |
| CN208143529U (en) * | 2018-05-14 | 2018-11-23 | 顺德职业技术学院 | A kind of heat-insulating lunch box based on DC low-voltage electromagnetic heating technique |
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| CN108449818B (en) | 2024-03-26 |
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