CN105103652B - An induction heating cooktop - Google Patents
An induction heating cooktop Download PDFInfo
- Publication number
- CN105103652B CN105103652B CN201380065019.8A CN201380065019A CN105103652B CN 105103652 B CN105103652 B CN 105103652B CN 201380065019 A CN201380065019 A CN 201380065019A CN 105103652 B CN105103652 B CN 105103652B
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- CN
- China
- Prior art keywords
- induction coil
- current
- comparator
- coil
- vce
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000006698 induction Effects 0.000 title claims abstract description 63
- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000002085 persistent effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 10
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036962 time dependent Effects 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
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/05—Heating plates with pan detection means
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cookers (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The present invention relates to an induction heating cooktop (1) comprising a resonant circuit (6) having an induction coil (4) and a resonant capacitor (5) connected in parallel to the induction coil (4), a power switch (7), for example an IGBT, that drives the resonant circuit (6), a freewheeling diode (8) connected in parallel to the power switch (7), a collector node (9) whereon resonance voltage (Vce) is generated during the non-conduction (turn-on) times of the power switch (7), a drive circuit (10) that provides the power switch (7) to be driven, and a control unit (11) that regulates the operation of the power switch (7) by controlling the drive circuit (10), and wherein the presence of the vessel (K) placed on the induction coil (4) and appropriate position thereof is determined under variable mains voltage and temperature conditions.
Description
Technical field
The present invention relates to a kind of sensing heating cooktop surface, wherein detects whether the container being placed on it adds in appropriate
Thermal potential is put.
Background technology
The magnetic field effect that sensing heating cooktop surface is produced using induction coil, according to the ferromagnetic of heating such as cast iron or steel class
The principle of cooker (such as pot) is running.In order to drive the induction coil for producing magnetic field, substantial amounts of electric current is on circuit board
On and off switch (IGBT igbts, diode or MOSFET).In the prior art, by using two power supplys
Half bridge series resonance (HBSR) circuit that switch and two resonant capacitors are formed, and by an on and off switch and a resonance
Single switch quasi-resonance (SSQR) circuit that capacitor is formed, which is used for driving single induction coil.Due to the advantage of cost, Dan Kai
It is preferred to close quasi-resonance circuit (SSQR)；However, they are run in narrower energy frequency scope, and only specific
Voltage and power bracket in cooker delivering power.Wherein using the induction heater of Single switch quasi-resonance circuit (SSQR)
In cooktop, can encounter problems when on variety classes cooker and cooktop burner device is detected, the position of cooker changes.And
And, detect that the position difficulty of cooker can increase under principal voltage fluctuation and condition of different temperatures.In some sensing heating cooking stoves
In face, using multi-coil-multiple zone structural, can maintain to heat in whole cooktop surface, and provide convenience for user.
In such sensing heating cooktop surface, the induction coil of various shapes and size is located at cooktop surface.In variable master
Under voltage, according to the input voltage under the conditions of power setting and variable temperature, also detection cooker position and performance characteristic
Such as diameter, type and power be sent to during cooker ferromagnetic characteristic for used in which multi-coil also have Single switch quasi-resonance
The product of circuit (SSQR) is quite crucial.If cooker is from the slip of cooktop surface or lifts and can not be properly detected,
Then cooker can not be effectively heated, and can damage the circuit of control induction coil.
European patent application No.EP2282606 is related to a kind of induction installation control method.By comparing resonance potential and control
Predetermined fixed reference potential in unit processed, detection induction coil upper container presence or absence and its resistivity and size.
In european patent application No.EP1629698, elaborate to include power inverter, microprocessor, protection circuit and
Pan detects the induction cook system of circuit.
In Japanese patent application No.JP4371108, elaborate to include the induction heating cooking dress of cooker detection circuit
Put.
In Japanese patent application No.JP2011023163, a kind of boiling rice machine is elaborated, wherein, in unstable electricity
Under the voltage conditions of source, detect whether the pan presence or absence in sensing heater or pan are located at desired position.
In Japanese patent application No.JP2007066837, a kind of boiling rice machine is elaborated, wherein, in supply voltage
Under conditional fluctuation, the presence of kitchen utensils such as spoon, cutter in sensing heater is detected.
The content of the invention
The purpose of the present invention is exactly to realize a kind of sensing heating cooktop surface, wherein in variable primary input voltage and temperature conditionss
Under accurately detect the position for being placed on induction coil upper container.
In order to obtain in the first claim with its each claim explain the purpose of the present invention, the sense of realization
Should heat cooktop surface include will exchange principal current be converted to the bridge commutator of DC current, with induction coil and resonant capacitor
Resonance circuit, drive resonance circuit on and off switch, such as IGBT, thereon produce resonance potential collector node, with
And current detection circuit, which is connected in series with induction coil and provides monitoring to coil current, by being converted into voltage data line
Loop current is delivered to container from induction coil.
Current detection circuit is made up of the current sense resistor being connected in series with induction coil, or by and induction coil
The current transformer being connected in series and the current sense resistor being connected with the secondary lateral parallel of current transformer are constituted.
By comparing coil current that current detection circuit detects and changing into voltage data and the collection on and off switch
When the phase contrast time between the resonance potential formed between electrode and emitter stage is with the threshold phase difference in its memorizer record
Between, control unit determine container whether exist on induction coil or induction coil on container alignment it is whether appropriate.
In an embodiment of the present invention, the terminal of first comparator and current sense resistor is connected in parallel.By detection line
The zero passage of loop current, first comparator produce square-wave output signal.
By comparing resonance potential and DC line voltages, the second comparator for being connected to collector node and DC lines produces square wave
Output signal.Potentiometer is connected to collector node and DC lines, and compares resonance potential by being reduced to measurable low-level
With DC line voltages.
The logic AND door that first comparator and the second comparator are connected thereto, when first comparator and the second comparator
When the output signal of the two is logic 1,1 output signal of logic is produced.
If the cycle of 1 output signal of logic of logic AND door is less than the threshold signal time in its memorizer record, control
Unit processed determines that induction coil upper container is not present, or container is slided into have exceeded from induction coil and is allowed for model
Enclose, and interrupt induction coil electric current.
In the sensing heating cooktop surface of the present invention, whole heated under the unfavorable conditions of AC primary input change in voltage
Container is reliably detected in journey with the presence or absence of the alignment position on induction coil and on induction coil.
Description of the drawings
The sensing heating cooktop surface in order to obtain purpose of the present invention realization is described in the drawings, wherein：
Fig. 1 is the schematic diagram of the control circuit of sensing heating cooktop surface.
Fig. 2 is the schematic diagram of the control circuit of the sensing heating cooktop surface in embodiments of the invention.
Fig. 3 is the induction coil electric current and voltage produced on and off switch in the control circuit for illustrate sensing heating cooktop surface
Time dependent figure.
Fig. 4 is the output signal of the first and second comparators used in the control circuit for illustrating sensing heating cooktop surface
Figure.
Fig. 5 is the figure of the output signal of the logic AND door used in the control circuit for illustrating sensing heating cooktop surface.
The element illustrated in figure is indicated with following references：
1. sensing heating cooktop surface
2. bridge commutator
3. filter circuit
4. induction coil
5. resonant capacitor
6. resonance circuit
7. on and off switch
8. fly-wheel diode
9. collector node
10. drive circuit
11. control units
12. current detection circuits
13. current sense resistors
14. current transformers
15. first comparators
16. second comparators
17.AND doors
18. first potentiometer
19. second potentiometer.
Specific embodiment
Sensing heating cooktop surface (1) includes the bridge commutator that the alternating current received from main line is converted into DC current
(2) exit for, being arranged on bridge commutator (2) includes the high-frequency filter circuit (3) of DC line capacitors and DC line inducers, and which leads to
Cross and D/C voltage, resonance circuit (6) are transmitted in specific frequency range to the voltage filter produced on DC lines, which has to placing
Container (K) thereon is provided the induction coil (4) and the resonant capacitor (5) being connected in parallel with induction coil (4) of heating, is driven
The on and off switch with collector and emitter (7) of dynamic resonance circuit (6), such as IGBT (igbt),
Scram position its be conduction state, when off between during for resonant capacitor (5) charge, on-position interrupt conduction,
Non-conductive (connection) time make resonant capacitor (5) discharge, and from induction coil (4) transfer power to container (K), and power supply open
The fly-wheel diode (8) that (7) are connected in parallel is closed, in non-conductive (connection) time of on and off switch (7), which is in resonance circuit (6)
Middle offer continuous induction coil (4) electric current (IL) (hereinafter it is referred to as " coil current (IL) "), collector node (9), thereon
Resonance potential (Vce) or in other words the collector emitter voltage of on and off switch (7) is produced on and off switch (7) no
Conductive (connection) is during the time, drive circuit (10), and which is with driving voltage driving power supply switch (7) of desired level, and controls
Unit (11), such as microprocessor, which passes through to control the operation of drive circuit (10) regulation power supply switch (7).
In the heating technique implemented in sensing heating cooktop surface (1), wherein conducting of the on and off switch (7) in scram position
Time is determined by the power yardstick arranged by user.Wherein on and off switch (7) the non-conductive time of on-position be by
Depend on control unit (11), induction coil (4) upper container of the property feature of the container (K) being placed on induction coil (4)
(K) what the temperature of alignment, AC principal voltages condition and container (K) determined.Resonant capacitor (5) is electrically charged first, then in electricity
Discharge during the time of source switch non-conductive (connection), and coil current (IL) by fly-wheel diode (8), while resonance is electric
Container (5) discharges.Resonance potential (Vce) is produced at collector node (9) place, and energy is sent to appearance from induction coil (4)
Device (K).In resonance potential (Vce) floor level, on and off switch (7) transforms to scram position from on-position, in other words,
Never conducting electric current state is to current conductive state, during ON time, while on and off switch (7) is in scram position, energy
Amount is stored in induction coil (4).
The sensing heating cooktop surface (1) of the present invention includes neutralizing what induction coil (4) was connected in series positioned at resonance circuit (6)
Which will be from induction coil (4) to container in the non-conductive time of on-position for current detection circuit (12), wherein on and off switch (7)
(K) coil current (IL) voltage data is changed into, and monitored coil current (I is providedL), and control unit (11), which leads to
Cross and compare from current detection circuit (12) coil current (I for receivingL) it is converted into voltage data and in collector node (9)
Phase contrast time (T) and record between the resonance potential (Vce) of generation threshold phase difference time (T- thresholds in its memory
Value), determine whether container (K) is suitable with the presence or absence of container (K) alignment on induction coil (4) or on induction coil (4).
Control unit (11) detection is converted in the resonance circuit (6) of voltage data by means of current detection circuit (12)
Coil current (IL), and by coil current during comparing the non-conductive time for calculating on and off switch (7) with resonance potential (Vce)
(IL) and the phase contrast time (T) between resonance potential (Vce).Control unit (11) detects appearance according to the phase contrast time (T)
Device (K) " slides work(" or " lifting " from induction coil (4), and interrupts the electric current transmission to induction coil (4).
In an embodiment of the present invention, current detection circuit (12) includes going here and there with the induction coil (4) in resonance circuit (6)
Connection connection by coil current (IL) it is converted into the current sense resistor (13) of voltage data (Fig. 2).Control unit (11) is from electricity
Relevant coil current (the I of terminal reception of stream detection resistance (13)L) voltage data.
In another embodiment of the present invention, current detection circuit (12) includes and the line of induction in resonance circuit (6)
Circle (4) is connected in series and by coil current (IL) it is reduced to the current transformer of the size that can be detected with controlled unit (11)
(14) current sense resistor (13), and with the secondary lateral parallel of current transformer (14) being connected is (Fig. 1).
In another embodiment of the present invention, sensing heating cooktop surface (1) includes in parallel with current sense resistor (13)
The first comparator (15) of connection, by detection coil electric current (IL) zero passage (ZC) produce digital " 1 " and " 0 " square wave output and believe
Number, and the coil current (I that thus offer is monitored with numerical dataL), it is connected to collector node (9) and filter circuit (3)
Second comparator (16) of exit DC lines, which compares resonance potential (Vce) and DC line voltages (Vdc) and provides individually monitored
From the resonance potential (Vce) of principal voltage fluctuation, and logic AND door (17), its overlapping first comparator (15) and second compare
The output signal of device (16) simultaneously sends a signal as single signal to control unit (11).
When induction coil (4) transmits energy to container (K), first comparator (15) is non-conductive on and off switch (7)
Coil current (the I of (connection) in the timeL) zero passage (ZC) point between produce 1 output signal of logic (S1) (Fig. 4).
Second comparator produces 1 output signal of logic (S2), wherein makes resonance potential (Vce) in this case with DC lines electricity
Pressure (Vdc) is equal, and by comparing resonance potential (Vce) and DC line voltages (Vdc) by resonance potential relative to DC line voltages
(Vdc) change into positive (Fig. 4).
AND-gate (17) produces 1 output signal of logic (S3), first comparator (15) and the second comparator in the situation
(16) output signal (S1, S2) of the two is logic 1 (Fig. 5).The persistent period of 1 output signal of logic of AND-gate (17) is equal to
Coil current (IL) and resonance potential (Vce) the phase contrast time (T).
When at least one of first comparator (15) and the second comparator (16) output signal is logical zero, AND-gate
(17) produce logic zero signal.
If threshold signal time of 1 output signal time of the logic (T) of AND-gate (17) less than record in its memory
(T threshold) (T ＜ T thresholds), then control unit (11) determine container (K) not on induction coil (4) exist or container (K) do not have
Have and be rightly aligned on induction coil (4), in other words, container (K) " slip " or " lifting ", and interrupt induction coil
(4) electric current.
In another embodiment of the present invention, sensing heating cooktop surface (1) include the first potentiometer (18), its have and
The resistance (R1, R2) that collector node (9) is connected in series, and by resonance potential (Vce) partial pressure to the second comparator (16)
Easily apply measurable low-level resonance potential (Vce), and the second potentiometer (19), which has and is connected in series with DC lines
Resistance (R3, R4), and by easily applying measurable low-level DC to D/C voltage (Vdc) partial pressure to the second comparator (16)
Voltage (Vdc).
By means of the present invention, sensing heating cooktop surface (1) is referred to as " flexible area " or " multi-region ", with more than one sensing
Coil (4), is each driven by single on and off switch (7), during heating process, determines induction coil (4) upper container
(K) whether presence or not, and in position whether container (K), and under variable principal voltage and temperature conditionss,
Energy is sent to container (K) in a secured manner.Protection on and off switch (7) and other electronic circuit components are against damages.
Claims (9)
1. a kind of sensing heating cooktop surface（1）, which includes the bridge commutator that alternating current is changed into DC current（2）；Arrange
In bridge commutator（2）Exit and the filter circuit that is filtered of voltage to producing at DC lines（3）；Resonance circuit（6）, its
With the container to being placed on it（K）The induction coil of heating is provided（4）And with induction coil（4）The resonance electricity being connected in parallel
Container（5）；Drive resonance circuit（6）On and off switch（7）；Fly-wheel diode（8）, itself and on and off switch（7）It is connected in parallel simultaneously
In on and off switch（7）The non-conductive time, i.e., provide induction coil during turn-on time（4）Electric current（IL）Seriality；At which
Upper generation resonance potential（Vce）Collector node（9）；With adjustment on and off switch（7）The control unit of operation（11）, its feature
It is,
- current detection circuit（12）, itself and induction coil（4）It is connected in series, and by by coil current（IL）It is converted into voltage number
According to from induction coil（4）It is sent to container（K）Coil current（IL）Monitoring is provided, and
- control unit（11）, which is by comparing current detection circuit（12）The coil current for detecting（IL）And collector node
（9）The resonance potential of upper generation（Vce）Between the phase contrast time（T）With the threshold phase difference time for recording in its memory
（T threshold）, determine container（K）Whether in induction coil（4）Upper presence or induction coil（4）On container（K）Alignment be
It is no suitable.
2. sensing heating cooktop surface as claimed in claim 1（1）, it is characterised in that current detection circuit（12）Including electric current
Detection resistance（13）, itself and induction coil（4）It is connected in series and by coil current（IL）It is converted into voltage data.
3. sensing heating cooktop surface as claimed in claim 1（1）, it is characterised in that current detection circuit（12）Including electric current
Transformer（14）, itself and induction coil（4）It is connected in series, and reduces coil current（IL）, and current sense resistor（13）With
Current transformer（14）It is connected in parallel.
4. sensing heating cooktop surface as claimed in claim 2 or claim 3（1）, it is characterised in that
- first comparator（15）, itself and current sense resistor（13）It is connected in parallel, and passes through detection coil electric current（IL）Zero passage
（ZC）Digital " 1 " and " 0 " square-wave output signal is produced,
- the second comparator（16）, itself and collector node（9）And filter circuit（3）Exit DC lines connection, and by than
Compared with resonance potential（Vce）With DC line voltages（Vdc）There is provided to resonance potential（Vce）Monitoring, and
- logic AND door（17）, its overlapping first comparator（15）With the second comparator（16）Output signal, and as single
Signal is sent to control unit（11）.
5. sensing heating cooktop surface as claimed in claim 4（1）, it is characterised in that on and off switch（7）It is non-conductive when
Between, i.e. turn-on time, first comparator is in coil current（IL）Zero passage（ZC）1 output signal of logic is produced between point（S1）.
6. sensing heating cooktop surface as claimed in claim 4（1）, it is characterised in that the second comparator（16）Produce logic 1 defeated
Go out signal（S2）, wherein in this case, make resonance potential（Vce）With DC line voltages（Vdc）It is equal, and relative to DC line voltages
（Vdc）Change into positive.
7. sensing heating cooktop surface as claimed in claim 4（1）, it is characterised in that AND-gate（17）Produce the output letter of logic 1
Number（S3）, the first comparator in the situation（15）With the second comparator（16）The output signal of the two（S1, S2）It is logic 1,
And AND-gate（17）1 output signal of logic persistent period be equal to coil current（IL）And resonance potential（Vce）Phase contrast
Time（T）.
8. sensing heating cooktop surface as claimed in claim 7（1）If, it is characterised in that AND-gate（17）Logic 1 export
Signal time（T）Less than the threshold signal time（T threshold）, then control unit（11）Determine container（K）Not in induction coil（4）On
Exist or container（K）Without rightly in induction coil（4）Upper alignment, and interrupt induction coil（4）Electric current.
9. sensing heating cooktop surface as claimed in claim 4（1）, it is characterised in that the first potentiometer（18）, which has and collection
Electrode node（9）The resistance being connected in series（R1, R2）, and by resonance potential（Vce）Partial pressure is to the second comparator（16）Apply
Plus low-level resonance potential（Vce）, and the second potentiometer（19）, which has the resistance being connected in series with DC lines（R3, R4）, and lead to
Cross to D/C voltage（Vdc）Partial pressure is to the second comparator（16）Apply low-level D/C voltage（Vdc）.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201214455 | 2012-12-11 | ||
| TRA2012/14455 | 2012-12-11 | ||
| PCT/EP2013/076198 WO2014090864A1 (en) | 2012-12-11 | 2013-12-11 | An induction heating cooktop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105103652A CN105103652A (en) | 2015-11-25 |
| CN105103652B true CN105103652B (en) | 2017-03-22 |
Family
ID=50064533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380065019.8A Expired - Fee Related CN105103652B (en) | 2012-12-11 | 2013-12-11 | An induction heating cooktop |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2932794B1 (en) |
| CN (1) | CN105103652B (en) |
| WO (1) | WO2014090864A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108633117A (en) * | 2017-03-23 | 2018-10-09 | 佛山市顺德区美的电热电器制造有限公司 | Detection is by the circuit of heating device and electromagnetic heating apparatus and household electrical appliance |
| EP3474629B1 (en) * | 2017-10-19 | 2020-12-02 | LG Electronics Inc. -1- | Induction heating and wireless power transferring device having improved resonant current detection accuracy |
| TR201721881A2 (en) * | 2017-12-26 | 2019-07-22 | Arcelik As | A METAL DETECTION SYSTEM WITH COIL FEEDING WITH A HIGH FREQUENCY GENERATOR |
| KR20210063897A (en) * | 2019-11-25 | 2021-06-02 | 엘지전자 주식회사 | Electric range for providing specific function without user intervention |
| KR20210066227A (en) * | 2019-11-28 | 2021-06-07 | 엘지전자 주식회사 | Electric range for providing specific function based on the uer's gesture |
| EP3836753B1 (en) * | 2019-12-13 | 2023-09-06 | Electrolux Appliances Aktiebolag | Method and system to control a qr-inverter in a induction cooking appliance |
| KR20210112191A (en) * | 2020-03-04 | 2021-09-14 | 엘지전자 주식회사 | Circuit for detecting failure of zero voltage switching |
| DE112021003836A5 (en) * | 2020-07-17 | 2023-06-01 | BSH Hausgeräte GmbH | induction hob device |
| US20230225020A1 (en) * | 2020-07-17 | 2023-07-13 | BSH Hausgeräte GmbH | Hob apparatus |
| KR20220128885A (en) * | 2021-03-15 | 2022-09-22 | 엘지전자 주식회사 | Induction heating apparatus and method for controlling induction heating apparatus |
| US20230217555A1 (en) * | 2022-01-05 | 2023-07-06 | Lg Electronics Inc. | Induction heating device |
| JP2024075069A (en) * | 2022-11-22 | 2024-06-03 | 三星電子株式会社 | Induction heating device and program for induction heating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5424514A (en) * | 1993-08-10 | 1995-06-13 | Goldstar Electron Co., Ltd. | Apparatus for sensing small object in high-frequency induction heating cooker |
| CN101953626A (en) * | 2009-07-14 | 2011-01-26 | 松下电器产业株式会社 | Rice cooker |
| CN102428750A (en) * | 2009-05-26 | 2012-04-25 | 三菱电机株式会社 | Induction cooking device and induction heating method |
-
2013
- 2013-12-11 EP EP13826925.3A patent/EP2932794B1/en active Active
- 2013-12-11 WO PCT/EP2013/076198 patent/WO2014090864A1/en active Application Filing
- 2013-12-11 CN CN201380065019.8A patent/CN105103652B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5424514A (en) * | 1993-08-10 | 1995-06-13 | Goldstar Electron Co., Ltd. | Apparatus for sensing small object in high-frequency induction heating cooker |
| CN102428750A (en) * | 2009-05-26 | 2012-04-25 | 三菱电机株式会社 | Induction cooking device and induction heating method |
| CN101953626A (en) * | 2009-07-14 | 2011-01-26 | 松下电器产业株式会社 | Rice cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2932794B1 (en) | 2017-03-08 |
| EP2932794A1 (en) | 2015-10-21 |
| CN105103652A (en) | 2015-11-25 |
| WO2014090864A1 (en) | 2014-06-19 |
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