KR101878135B1 - Inductive heating apparatus having authentification of vowels - Google Patents

Inductive heating apparatus having authentification of vowels Download PDF

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Publication number
KR101878135B1
KR101878135B1 KR1020160156646A KR20160156646A KR101878135B1 KR 101878135 B1 KR101878135 B1 KR 101878135B1 KR 1020160156646 A KR1020160156646 A KR 1020160156646A KR 20160156646 A KR20160156646 A KR 20160156646A KR 101878135 B1 KR101878135 B1 KR 101878135B1
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South Korea
Prior art keywords
heating
object
unit
temperature
charging
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KR1020160156646A
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Korean (ko)
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KR20180058035A (en
Inventor
이경제
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주식회사 아프로텍
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B6/00Heating by electric, magnetic, or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/06Control, e.g. of temperature, of power
    • H05B6/062Control, e.g. of temperature, of power for cooking plates or the like
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B6/00Heating by electric, magnetic, or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/10Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12Cooking devices

Abstract

[0001] The present invention relates to an induction heating apparatus having a container authentication function, in which a heating object is recognized by checking a frequency response characteristic according to a material of a heating object, The device and the heating / charging induction heating device are implemented so that only the certified heating object can be heated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an induction heating apparatus having a container authentication function,

The present invention relates to an induction heating technique, and more particularly, to a heating induction heating device and a heating / charging induction heating device having a container authentication function.

In Korean Patent Laid-Open Publication No. 10-2004-0018594 (2004.04.04), if a driving control signal is inputted according to a user's operation, the driving of the control device is controlled so that the container heating is performed, The electromagnetic induction heating apparatus increases the efficiency of the induction heating by stopping the operation.

The present inventor has found that when heating a heating object such as a tumbler or cup on a main body of an induction heating apparatus and heating it, the heating object of a third party having a frequency response characteristic not supported by the induction heating apparatus is not heated, And to improve the stability.

Korean Patent Publication No. 10-2004-0018594 (2004.04.04)

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a heating-only induction heating device and a heating / heating device which recognize a heating object by recognizing a frequency response characteristic according to a material of a heating object, And an object of the present invention is to provide an induction heating apparatus for both charging and discharging.

According to an aspect of the present invention, there is provided an apparatus for heating an object to be heated, the apparatus comprising: a power source unit to which power is applied; A heating unit including a TX coil and performing a heating operation; A sensor unit for recognizing the heating object by checking a frequency response characteristic of the heating object placed on the body; A control unit for controlling the heating operation of the heating unit and controlling the heating unit to perform a heating operation only when the heating unit recognizes the heating object by the sensor unit; And the like.

According to a further aspect of the present invention, the sensor unit of the heating-dedicated induction heating apparatus detects a current flowing in the TX coil, and when the detected current value is in the current value range corresponding to the frequency response characteristic according to the material of the self heating object And recognizes the heating object as its own heating object.

According to a further aspect of the present invention, the control unit of the heating-dedicated induction heating apparatus controls the heating unit to sequentially supply the frequency-shifted electric power to the TX coil in a specific frequency unit.

According to a further aspect of the present invention, the sensor unit of the heating-dedicated induction heating apparatus detects a change in current flowing through a TX coil, which is sequentially supplied with frequency-shifted power in a specific frequency unit, And recognizes the heating object as a heating object when the heating object is matched with a current change corresponding to a frequency response characteristic according to a material of the heating object.

According to a further aspect of the present invention, the control unit of the heating-dedicated induction heating apparatus repeatedly performs on-off control of the heating operation of the heating unit based on the temperature control characteristic of the heating object itself, .

According to a further aspect of the present invention, the control unit of the heating-dedicated induction heating apparatus performs the heating operation for a predetermined time based on the temperature control characteristic of the heating object of the heating object, and after the predetermined time, And the heating unit is controlled so as to be maintained at a specific temperature.

According to a further aspect of the present invention, a temperature sensor for measuring the temperature of the first heating object is installed on the upper part of the main body of the heating-only induction heating apparatus.

According to another aspect of the present invention, there is provided a heating / charging induction heating apparatus having a body on which a heating object or a charging object is placed, A heating / charging unit including a TX coil and performing a heating or charging operation; A sensor unit recognizing a heating object or a charging object to be placed on the main body, and recognizing the heating object by checking a frequency response characteristic according to a material of the heating object; A control unit controlling the heating / charging unit to control the heating / charging operation of the heating / charging unit, and performing the heating operation only when the heating unit recognizes the heating object by the sensor unit; And the like.

According to a further aspect of the present invention, the sensor section of the heating / charging induction heating apparatus for detecting the current flowing through the TX coil detects the current value of the current value range corresponding to the frequency response characteristic according to the material of the self- It is recognized as a self heating object.

According to a further aspect of the present invention, the controller of the heating / charging induction heating apparatus controls the heating / charging unit to sequentially supply the frequency-shifted power to the TX coil in a specific frequency unit.

According to a further aspect of the present invention, the sensor unit of the heating / charging induction heating apparatus detects a change in current flowing through a TX coil, which is sequentially supplied with frequency shifted power in a specific frequency unit, And recognizes the heating object as a heating object when the current is matched with the current change corresponding to the frequency response characteristic according to the material.

According to a further aspect of the present invention, the control unit of the heating / charging induction heating apparatus repeatedly performs on / off control of the heating operation of the heating / charging unit based on the temperature control characteristic of the heating object of the heating object, Is maintained at a specific temperature.

According to a further aspect of the present invention, the control unit of the heating / charging combined induction heating apparatus performs a heating operation for a predetermined time based on the temperature control characteristic of the heating object of the heating object, and after the predetermined time, And the heating / charging unit is controlled so that the temperature is maintained at a specific temperature.

According to a further aspect of the present invention, a temperature sensor for measuring the temperature of the heating object is provided on the upper portion of the main body of the heating / charging induction heating apparatus.

The present invention realizes a heating-only induction heating apparatus and a heating / charging induction heating apparatus for recognizing a heating object by recognizing the heating object according to the material of the heating object and performing the heating operation only when recognizing the heating object itself, It is possible to heat only the authenticated heating object, thereby improving the stability.

1 is a perspective view showing an example of using a heating-dedicated induction heating apparatus according to the present invention.
2 is a block diagram showing a configuration of an embodiment of a heating-only induction heating apparatus according to the present invention.
3 is a block diagram showing a configuration of a heating unit of an induction heating apparatus for heating according to an embodiment of the present invention.
4 is a perspective view showing an example of using an induction heating apparatus for both heating / charging according to the present invention.
5 is a block diagram showing a configuration of an embodiment of an induction heating apparatus for both heating / charging according to the present invention.
6 is a block diagram showing a configuration of a heating / charging unit of a heating / charging induction heating apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The terms used throughout the specification of the present invention have been defined in consideration of the functions of the embodiments of the present invention and can be sufficiently modified according to the intentions and customs of the user or operator. It should be based on the contents of.

FIG. 1 is a perspective view showing a use example of a heating-only induction heating apparatus according to the present invention, and FIG. 2 is a block diagram showing a configuration of an embodiment of a heating-only induction heating apparatus according to the present invention.

A heating-dedicated induction heating apparatus 100 according to this embodiment includes a main body 101 on which a heating object 200 such as a tumbler or a cup is placed and includes a power supply unit 110, a heating unit 120, (130), and a control unit (140).

The power supply unit 110 applies power. For example, the power supply unit 110 converts a commercial AC 220V power supply into a rated DC power supply, receives a rated DC power from a PC or the like through USB 2.0 serial communication, and supplies the DC power to the heating unit 120 and the control unit 140 . ≪ / RTI >

The heating unit 120 includes a TX coil 121 and performs a heating operation. For example, the heating unit 120 supplies the power supplied from the power supply unit 110 to the TX coil 121, and controls the current flowing through the TX coil 121 under the control of the controller 140, To heat the heating object 200 overlying the heating element 200 in an electromagnetic induction manner.

In this case, the heating object 200 placed on the main body 101 and heated by the heating unit 120 in an electromagnetic induction manner may be a ferromagnetic material having a specific permeability of 1 or more. The material may be SUS201 / SS-400 / SUS430 / STK400 / FC-25, and the like.

When a current flows through the heating unit 120, the heating operation is performed by generating heat in the ferromagnetic body included in the heating object 200 due to eddy current loss and hysteresis loss. For example, the distance between the ferromagnetic body of the heating object 200 and the TX coil 121 of the heating unit 120 may be maintained to be about 0 to 10 mm.

The magnetic field hysteresis loss is generally referred to as a magnetic field hysteresis loss when heat is lost due to the magnetic field density response delay due to the magnetic field of the magnetic material and the internal energy loss due to friction inside the material.

When an alternating magnetic field is applied to the iron core, a secondary current is induced by a change in magnetic flux in the iron core due to a change in magnetic flux density, and a joule heat is generated when the current flows in the iron core. At this time, the heat loss is called eddy current loss.

The sensor unit 130 recognizes the heating object by checking the frequency response characteristic of the heating object 200 placed on the main body 101. For example, the sensor unit 130 may detect the current flowing through the TX coil 121 of the heating unit 120 and recognize the heating object.

The frequency response characteristic differs depending on the material of the heating object 200 placed on the main body 101. Here, the frequency response characteristic may be a detection current value according to the power frequency supplied to the TX coil 121. [

The reason why the frequency response characteristics are different depending on the material of the heating object 200 is that the delay of the magnetic flux density response due to the magnetic field and the energy loss due to the friction inside the material are different depending on the material of the heating object 200, ) Because the magnetic field hysteresis loss varies depending on the material.

Since the detection current value according to the power frequency supplied to the TX coil 121 is smaller as the magnetic field intensity of the heating object 200 is higher, the heating object 200 is larger in the case of a general magnetic body than in a case where the material of the heating object 200 is a ferromagnetic body , And is larger when it is a non-magnetic material.

Therefore, if a ferromagnetic material having a specific frequency response characteristic distinguishable from other heating objects is used as the material of the heating object 200, the heating object 200 placed on the main body 101 through the frequency response characteristic is heated Object, or a third party heating object.

The control unit 140 controls the heating unit 120 to control the heating operation of the heating unit 120 so that the heating unit 120 performs the heating operation only when the heating unit 120 recognizes the heating object.

For example, when the control unit 140 recognizes a heating object having a specific frequency response characteristic by the sensor unit 130, the control unit 140 determines that the heating object is the product of itself and causes the heating unit 120 to start the heating operation And to transmit control signals.

According to the present invention, the heating object is recognized by recognizing the heating object by checking the frequency response characteristic according to the material of the heating object, and by performing the heating operation only when recognizing the heating object, Since only the heating object can be heated, the stability can be improved.

According to a further aspect of the present invention, the sensor unit 130 detects a current flowing in the TX coil 121, and detects a current value of a current value range corresponding to a frequency response characteristic according to the material of the self- It can be realized to recognize it as a self heating object.

In this case, the control unit 140 controls the heating unit 120 to apply a specific frequency power to the TX coil 121, detects the current flowing through the TX coil 121 through the sensor unit 130, It is determined whether the current value corresponds to the range of the current value corresponding to the frequency response characteristic according to the material of the heating object. If the current value is within the range, the controller 140 controls the heating unit 120 do.

For example, a 100 kHz frequency power is applied to the TX coil 121 to measure a current value flowing through the TX coil 121. When the measured current value coincides with the current value corresponding to the frequency response characteristic depending on the material of the self heating object It can be realized to recognize it as the own heating object.

According to a further aspect of the present invention, the sensor unit 130 detects a change in the current flowing through the TX coil 121, which is sequentially supplied with frequency-shifted power in a specific frequency unit, Can be realized to be recognized as a self-heating object when it is matched with the current change corresponding to the frequency response characteristic according to the material of the self-heating object.

In this case, the control unit 140 controls the heating unit 120 to sequentially supply the frequency-shifted power to the TX coil 121 in units of a specific frequency, A change in the current flowing through the TX coil 121, which is supplied with the frequency-shifted electric power in order, is detected, and it is determined whether the detected current change matches the current change corresponding to the frequency response characteristic according to the material of the heating object , The control unit 140 recognizes the heated object only when it is matched and controls the heating unit 120 to start the heating operation.

For example, it is possible to monitor the change in the current value flowing through the TX coil 121 while sequentially applying the frequency-shifted power in units of 10 KHz from the 100 KHz frequency power to the 210 KHz frequency power to the TX coil 121, And can be realized as a self-heating object when the current value coincides with the change of the current value corresponding to the frequency response characteristic depending on the material of the heating object.

3 is a block diagram showing a configuration of a heating unit of an induction heating apparatus for heating according to an embodiment of the present invention. 3, the heating unit 120 may include an inverter 122, an inverter driving unit 123, and an oscillation unit 124.

The inverter 122 generates and outputs a resonance voltage supplied to the TX coil 121 from a DC power source applied by the power source unit 110. A resonance voltage output by the inverter 122 is supplied to the TX coil 121 to generate a magnetic field and an eddy current is induced in the heating object 200 due to the electromagnetic induction effect of the magnetic field, do.

The inverter driving unit 123 alternately operates switching elements (not shown) in the inverter 122 to drive and control the inverter 122 to generate a resonance voltage supplied to the TX coil 121.

The oscillation unit 124 outputs an oscillation frequency for alternately operating switching elements (not shown) in the inverter 122. At this time, the oscillation unit 124 outputs the oscillation frequency for supplying the power of the specific frequency to the TX coil 121 under the control of the control unit 140, or the frequency shifted power for the specific frequency unit by TX And output the oscillation frequencies to be supplied to the coil 121 in order.

If it is determined through the self-heating object authentication by the sensor unit 130 that the heating object is the heating object, the control unit 140 controls the heating unit 120 to induction-induce the heating object.

The sensor unit 130 measures the current value flowing through the TX coil 131 and transmits the current value to the controller 140. The controller 140 controls the TX coil 131 according to the current value detected by the sensor unit 130 121 to control the current flowing in the TX coil 121 by controlling the heating unit 120.

At this time, the control unit 140 repeatedly performs on-off control of the heating operation of the heating unit 120 based on the temperature control characteristic of the heating object to maintain the temperature of the heating object at a specific temperature .

For example, the controller 140 performs a heating operation for a predetermined time based on the temperature control characteristic of the heating object, and controls the heating unit to maintain the temperature of the heating object at a predetermined temperature after the predetermined time Can be implemented.

At this time, the specific temperature to be maintained can be set by the user. For example, it may be implemented to receive a specific temperature value to be maintained by a user through a switch input or the like.

For example, a switch for distinguishing the HOT mode and the WARM mode may be provided in the heating-dedicated induction heating apparatus 100 so that the control unit 140 can distinguish the HOT mode from the WARM mode according to the user's selective switch input. (Not shown).

If the specific heating (holding temperature) maintained by the controller 140 is A ° C and the heating object including the ferromagnetic material a has a temperature rise slope of A / T (DELTA DEG C / DELTA t) The heating section 120 should maintain the heating operation for a time T (for example, a unit of minutes) so that the heating object maintains the A ° C. If the heating object has a temperature falling slope of Δ ° / Δt,

In addition, if the heating object is maintained at the temperature A for the time T, the heating operation should be stopped for a predetermined period of time to prevent the temperature from rising beyond A < 0 > C. The preset constant time can be set based on the temperature fall slope.

If the heating operation is stopped for a certain time and the temperature is lowered to C ° C (A> C °), the heating operation is maintained again for T / C time so that the heating object becomes A ° C again. In this manner, the heating operation of the heating unit 120 is repeatedly controlled on and off based on the temperature control characteristic of the heating object through the control unit 140, so that the temperature of the heating object can be kept constant.

According to a further aspect of the present invention, a temperature sensor 101a for measuring the temperature of the heating object 200 may be installed on the main body 101 of the heating-dedicated induction heating apparatus 100. [ For example, the temperature sensor 101a may be a contact type temperature sensor formed at the central portion of the upper portion of the main body 101 and contacting the lower central portion of the heating object 200 to detect the temperature of the lower portion of the heating object 200 .

The controller 140 controls the heating operation of the first heating object 200 based on the detected temperature when the temperature of the first heating object 200 is detected by the temperature sensor 101a. For example, the controller 140 repeatedly performs on-off control of the heating operation of the heating unit 120 based on the temperature control characteristic of the heating object to maintain the temperature of the heating object at a specific temperature Can be controlled.

On the other hand, according to an additional aspect of the invention, the heating-dedicated induction heating apparatus 100 may further include the memory 150. [ The memory 150 may store information for controlling the heating-only induction heating apparatus 100, for example, a temperature control characteristic of the self heating object and an algorithm for controlling the heating object temperature, 150 to control the operation of the heating unit 120 to adjust the temperature of the heating object.

FIG. 4 is a perspective view showing an example of using the induction heating apparatus for both heating / charging according to the present invention, and FIG. 5 is a block diagram showing the constitution of an induction heating apparatus for heating / charging both according to the present invention.

The heating / charging induction heating apparatus 300 according to the present embodiment includes a heating object 400 such as a tumbler or a cup or a charging object 500 such as a portable terminal or a portable battery such as a mobile phone, a tablet PC, a wearable electronic device, And includes a power supply unit 310, a heating / charging unit 320, a sensor unit 330, and a control unit 340.

The power supply unit 310 applies power. For example, the power supply unit 310 converts the commercial AC 220V power supply into a rated DC power supply, receives the rated DC power from the PC or the like through the USB 2.0 serial communication, and supplies the rated DC power to the heating / charging unit 320 and the control unit 340 .

The heating / charging unit 320 includes a TX coil 321 and performs a heating or charging operation. For example, the heating / charging unit 320 supplies the power supplied from the power supply unit 310 to the TX coil 321, and controls the current flowing through the TX coil 321 under the control of the controller 340, 301 to heat the heated object 400 in an electromagnetic induction manner.

In this case, the heating object 400 placed on the main body 301 and heated by the heating / charging part 320 in an electromagnetic induction manner may be a ferromagnetic material having a specific permeability of 1 or more. The material may be SUS201 / SS-400 / SUS430 / STK400 / FC-25 or the like.

When a current flows through the heating / charging unit 320, the heating operation is performed by generating heat in the ferromagnetic body included in the heating object 400 due to eddy current loss and hysteresis loss. For example, the distance between the ferromagnetic body of the heating object 400 and the TX coil 321 of the heating / charging part 320 may be maintained to be about 0 to 10 mm.

The magnetic field hysteresis loss is generally referred to as a magnetic field hysteresis loss when heat is lost due to the magnetic field density response delay due to the magnetic field of the magnetic material and the internal energy loss due to friction inside the material.

When an alternating magnetic field is applied to the iron core, a secondary current is induced by a change in magnetic flux in the iron core due to a change in magnetic flux density, and a joule heat is generated when the current flows in the iron core. At this time, the heat loss is called eddy current loss.

When the charging object 500 including the RX coil (not shown) is placed on the main body 301, the TX coil 321 included in the heating / charging part 320 is connected to the RX coil of the charging object 500 The charging object 500 can be charged by generating an induced current.

The sensor unit 330 recognizes the heating object 400 or the charging object 500 placed on the main body 301 and recognizes the heating object 400 by checking the frequency response characteristic according to the material of the heating object 400 . For example, the sensor unit 330 may detect the current flowing through the TX coil 321 of the heating / charging unit 320 and recognize the heating object.

The frequency response characteristic differs depending on the material of the heating object 400 placed on the main body 301. Here, the frequency response characteristic may be a detection current value according to the power frequency supplied to the TX coil 321. [

The reason why the frequency response characteristics are different depending on the material of the heating object 400 is that the magnetic flux density response delay due to the magnetic field is different from the energy loss due to the friction inside the material depending on the material of the heating object 400, ) Because the magnetic field hysteresis loss varies depending on the material.

Since the detection current value according to the power frequency supplied to the TX coil 321 is smaller as the magnetic field strength of the heating object 400 is higher, the heating object 400 is larger in the case of a general magnetic body than in a case where the material of the heating object 400 is a ferromagnetic body , And is larger when it is a non-magnetic material.

Therefore, if a ferromagnetic material having a specific frequency response characteristic distinguishable from other heating objects is used as the material of the heating object 400, the heating object 400 placed on the main body 301 through the frequency response characteristic confirmation can be heated Object, or a third party heating object.

Meanwhile, when the sensor unit 330 performs analog ping and a response is received from the object placed on the main body 301, the object placed on the main body 301 is determined as the charging object 500, If there is no object, the object placed on the main body 301 is determined as the heating object 400.

The analog ping refers to a process of detecting a change in the amount of electric power of the heating / charging unit 320 and checking if the charging object 500 exists within a certain range. When there is a response to the analog ping from the charging object 500 placed on the main body 301, the sensor unit 330 performs digital ping on the charging object 500.

When the response signal to the digital ping is received from the charging object 500, the sensor unit 330 determines whether the digital ping response signal matches the preset identification information. If the digital ping response signal matches the preset identification information The controller 340 controls the charging unit 340 to perform charging control.

When the sensor unit 330 transmits the power signal of the operating point to the charging object 500 and the charging object 500 receives the power signal transmitted from the sensor unit 330, And transmits the generated configuration information to the sensor unit 330.

Then, if the sensor unit 330 confirms the packet and the configuration information received from the charging object 500 and confirms that the charging object is the charging object, the control unit 340 signals the controller 340 to perform charge control.

The control unit 340 controls the heating / charging unit 320 to control the heating / charging operation of the heating / charging unit 320 so as to perform the heating operation only when the heating unit 330 recognizes the heating object, do.

For example, when the controller 340 recognizes a heating object having a specific frequency response characteristic by the sensor unit 330, it determines that the heating object is its own product and starts the heating operation to the heating / To transmit the control signal.

The control unit 340 may be configured to transmit a control signal to start the heating operation to the heating / charging unit 320 when the charging object is recognized by the sensor unit 330.

When the heating object is recognized by the sensor unit 330, the controller 340 controls the heating / charging unit 320 to perform the heating operation by operating in the heating mode. When the charging object is recognized, And controls the heating / charging unit 320 to perform the charging operation.

According to the present invention, by implementing the induction heating device for heating / charging so as to recognize the heating object by recognizing the frequency response characteristic according to the material of the heating object and perform the heating operation only when recognizing the heating object, Only authorized heating objects can be heated, thus increasing stability.

According to a further aspect of the present invention, the sensor unit 330 detects a current flowing in the TX coil 321, and detects the current value in a current value range corresponding to the frequency response characteristic according to the material of the self heating object It can be realized to recognize it as a self heating object.

In this case, the control unit 340 controls the heating / charging unit 320 to supply the specific frequency power to the TX coil 321, detects the current flowing through the TX coil 321 through the sensor unit 330, The heating / charging unit 320 determines that the current value is within the range of the current value corresponding to the frequency response characteristic according to the material of the heating object, recognizes it as the heating object only when the temperature is within the range, .

For example, a frequency power of 100 KHz is supplied to the TX coil 321 to measure the current value flowing through the TX coil 321, and the measured current value coincides with the current value corresponding to the frequency response characteristic according to the material of the self- It can be realized to recognize it as the own heating object.

According to a further aspect of the present invention, the sensor unit 330 detects a change in current flowing through the TX coil 321, which is sequentially supplied with frequency-shifted power in a specific frequency unit, Can be realized to be recognized as a self-heating object when it is matched with the current change corresponding to the frequency response characteristic according to the material of the self-heating object.

In this case, the control unit 340 controls the heating / charging unit 320 to sequentially supply the frequency-shifted power to the TX coil 321 in units of a specific frequency, And determines whether the detected current change matches the current change corresponding to the frequency response characteristic according to the material of the heating object itself And recognizes the heating object as a heating object only when it is matched, and controls the heating / charging unit 320 so that the control unit 340 starts the heating operation.

For example, it is possible to monitor the change in the current value flowing through the TX coil 321 while sequentially supplying the frequency-shifted power in units of 10 KHz from the 100 KHz frequency current to the 210 KHz frequency current to the TX coil 321, And can be realized as a self-heating object when the current value coincides with the change of the current value corresponding to the frequency response characteristic depending on the material of the heating object.

6 is a block diagram showing a configuration of a heating / charging unit of a heating / charging induction heating apparatus according to an embodiment of the present invention. 6, the heating / charging unit 320 may include an inverter 322, an inverter driving unit 323, and an oscillating unit 324.

The inverter 322 generates and outputs a resonance voltage supplied to the TX coil 321 from a DC power source applied by the power source unit 310. A resonance voltage output by the inverter 322 is supplied to the TX coil 321 to generate a magnetic field and an eddy current is induced in the heating object 400 by the electromagnetic induction effect of the magnetic field, do.

The inverter driving unit 323 alternately operates switching elements (not shown) in the inverter 322 to drive and control the inverter 322 so that a resonance voltage supplied to the TX coil 321 is generated.

The oscillation unit 324 outputs an oscillation frequency for alternately operating switching elements (not shown) in the inverter 322. At this time, the oscillation unit 324 outputs the oscillation frequency for supplying the specific frequency power to the TX coil 321 under the control of the control unit 340, or the frequency shifted power for the specific frequency unit, And to output the oscillation frequencies to be supplied in order to the oscillation circuit 321.

If it is determined through the self-heating object authentication by the sensor unit 330 that the heating object is the heating object, the control unit 340 controls the heating / charging unit 320 to induce electromagnetic induction heating of the heating object.

The sensor unit 330 measures the current value flowing through the TX coil 331 and transmits the current value to the controller 340. The controller 340 controls the TX coil 331 according to the current value detected by the sensor unit 330 And controls the heating / charging unit 320 that supplies power to the TX coil 321.

At this time, the controller 340 repeatedly performs on-off control of the heating operation of the heating / charging unit 320 based on the temperature control characteristic of the heating object to maintain the temperature of the heating object at a specific temperature .

For example, the control unit 340 performs a heating operation for a predetermined time based on the temperature control characteristic of the heating object, and after the predetermined time, the heating / And so on.

At this time, the specific temperature to be maintained can be set by the user. For example, it may be implemented to receive a specific temperature value to be maintained by a user through a switch input or the like.

For example, a switch for distinguishing between the HOT mode and the WARM mode may be installed in the heating / charging induction heating apparatus 300, so that the controller 340 operates the HOT mode and the WARM mode in accordance with the user's selective switch input And to control the heating / charging unit 320.

If the specific heating (holding temperature) maintained by the controller 340 is A ° C and the heating object including the ferromagnetic material a is the temperature rising slope of A / T (DELTA DEG C / DELTA t) The heating / charging unit 320 should maintain the heating operation for a time T (for example, a unit of minutes) so that the heating object maintains the A ° C. If the heating object has a temperature falling slope of (Δ ° / Δt) .

In addition, if the heating object is maintained at the temperature A for the time T, the heating operation should be stopped for a predetermined period of time to prevent the temperature from rising beyond A < 0 > C. The preset constant time can be set based on the temperature fall slope.

If the heating operation is stopped for a certain time and the temperature is lowered to C ° C (A> C °), the heating operation is maintained again for T / C time so that the heating object becomes A ° C again. In this manner, the heating operation of the heating / charging unit 320 is repeatedly controlled on and off based on the temperature control characteristic of the heating object through the controller 340, so that the temperature of the heating object can be kept constant.

According to a further aspect of the present invention, a temperature sensor 301a may be installed on the main body 301 of the induction heating apparatus 300 for heating / charging. For example, the temperature sensor 301a may be a contact-type temperature sensor formed at a central portion of the upper portion of the main body 301 and contacting the lower central portion of the heating object 400 to detect the temperature of the lower portion of the heating object 400 .

When the temperature detected under the heating object 400 is detected by the temperature sensor 301a, the control unit 340 controls the heating operation of the heating object 400 based on the detected temperature. For example, the controller 340 repeatedly performs on-off control of the heating operation of the heating unit 320 on the basis of the temperature control characteristic of the heating object to maintain the temperature of the heating object at a specific temperature Can be controlled.

According to an additional aspect of the invention, the heating / charging induction heating apparatus 300 may further include the memory 350. [ The memory 350 may store information for controlling the heating / charging induction heating apparatus 300, for example, a temperature control characteristic of the self heating object and an algorithm for controlling the heating object temperature, and the control unit 340 The temperature of the heating object can be adjusted by reading the information stored in the memory 350 and controlling the operation of the heating /

As described above, according to the present invention, the heating object is recognized by recognizing the heating object by checking the frequency response characteristic according to the material of the heating object, and the heating dedicated induction heating device and heating / By implementing the heating device, only the certified heating object can be heated, thereby improving the stability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

INDUSTRIAL APPLICABILITY The present invention is industrially applicable in the field of induction heating technology and its application technology.

100, 300: Induction heating device
101, 301:
101a, 301a: Temperature sensor
110, 310:
120:
121, 321: TX coils
320: heating /
130 and 330:
140, 340:
150, 350: memory
200, 400: heating object
500: Charge object

Claims (14)

  1. An induction heating apparatus comprising a body on which a heating object is placed,
    A power supply unit for applying power;
    An inverter for performing a heating operation and generating and outputting a resonance voltage to be supplied to the TX coil from a DC power source applied by the power source unit; and an electromagnetic induction effect by a magnetic field generated by a resonance voltage output by the inverter, An inverter driving unit for alternately driving the switching elements in the inverter to drive the inverter so as to generate a resonance voltage to be supplied to the TX coil, and a frequency shift And outputting oscillation frequencies for sequentially supplying power to the TX coil;
    If the current value change coincides with the change of the current value corresponding to the frequency response characteristic according to the material of the heating object itself, it monitors the change of the current flowing through the TX coil, which is sequentially supplied with the frequency- A sensor unit recognizing the object as a heating object;
    When a heating object corresponding to a change in a current value corresponding to a frequency response characteristic corresponding to a material of the heating object is recognized by the sensor unit, the heating object is determined as its own product, A control unit for controlling the heating unit to start operation;
    And a container authentication function for heating the container.
  2. delete
  3. The method according to claim 1,
    Wherein the control unit comprises:
    Wherein the control unit controls the heating unit to sequentially supply the frequency-shifted power to the TX coil in a specific frequency unit.
  4. delete
  5. The method according to claim 1,
    Wherein the control unit comprises:
    Characterized in that the heating operation of the heating unit is repeatedly turned on and off based on the temperature control characteristic of the heating object to maintain the temperature of the heating object at a specific temperature.
  6. 6. The method of claim 5,
    Wherein the control unit comprises:
    Wherein the control unit controls the heating unit so that the heating operation is performed for a predetermined time based on the temperature control characteristic of the heating object and the temperature of the heating object is maintained at a predetermined temperature after the predetermined time. Wherein the heating element is a heating element.
  7. 6. The method of claim 5,
    On top of the body:
    And a temperature sensor for measuring the temperature of the first heating object is installed.
  8. An induction heating apparatus comprising a body on which a heating object or a charging object is placed,
    A power supply unit for applying power to the heating / charging induction heating device;
    An inverter for performing a heating or charging operation and generating and outputting a resonance voltage to be supplied to the TX coil from a DC power source applied by the power source unit and an electromagnetic induction effect by a magnetic field generated by a resonance voltage output by the inverter An inverter driving part for alternately driving the switching elements in the inverter to drive the inverter so as to generate a resonance voltage to be supplied to the TX coil; Frequency oscillation frequency for sequentially supplying frequency shifted power to the TX coil;
    A heating object or a charging object to be placed on the main body is recognized and a change in current flowing through a TX coil received in order of frequency shifted power in a specific frequency unit is monitored to determine whether the current value changes according to the material of the heating object A sensor unit for recognizing the heating object as a heating object when the current value coincides with the change in the current value corresponding to the response characteristic;
    And controlling a heating or charging operation of the heating / charging unit. When a heating object corresponding to a change in current value corresponding to a frequency response characteristic corresponding to a material of the heating object is recognized by the sensor unit, And controls the heating / charging unit to start the heating operation;
    Wherein the heating device is provided with a container authentication function.
  9. delete
  10. 9. The method of claim 8,
    Wherein the control unit comprises:
    And the heating / charging unit is controlled so that the frequency-shifted power is sequentially supplied to the TX coil in a specific frequency unit.
  11. delete
  12. 9. The method of claim 8,
    Wherein the control unit comprises:
    Wherein the temperature of the heating object is maintained at a specific temperature by repeatedly controlling the heating operation of the heating / charging unit on the basis of the temperature control characteristic of the heating object of the heating object. Induction heating apparatus.
  13. 13. The method of claim 12,
    Wherein the control unit comprises:
    Wherein the controller controls the heating / charging unit to perform a heating operation for a predetermined time based on the temperature control characteristic of the heating object and maintain the temperature of the heating object at a predetermined temperature after the predetermined time. And an induction heating device for both heating and charging.
  14. 13. The method of claim 12,
    On top of the body:
    And a temperature sensor for measuring the temperature of the first heating object is installed.
KR1020160156646A 2016-11-23 2016-11-23 Inductive heating apparatus having authentification of vowels KR101878135B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008234955A (en) * 2007-03-20 2008-10-02 Sanyo Electric Co Ltd Induction-heating cooking oven
KR20110104987A (en) * 2009-01-06 2011-09-23 액세스 비지니스 그룹 인터내셔날 엘엘씨 Smart cookware
KR20120081118A (en) * 2009-09-10 2012-07-18 퀄컴 인코포레이티드 Wireless power for heating or cooling
KR20140085816A (en) * 2012-12-27 2014-07-08 전자부품연구원 Electric range equipped with wireless energy transfer apparatus
KR20160033238A (en) * 2007-01-02 2016-03-25 액세스 비지니스 그룹 인터내셔날 엘엘씨 Inductive power supply with device identification

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160033238A (en) * 2007-01-02 2016-03-25 액세스 비지니스 그룹 인터내셔날 엘엘씨 Inductive power supply with device identification
JP2008234955A (en) * 2007-03-20 2008-10-02 Sanyo Electric Co Ltd Induction-heating cooking oven
KR20110104987A (en) * 2009-01-06 2011-09-23 액세스 비지니스 그룹 인터내셔날 엘엘씨 Smart cookware
KR20120081118A (en) * 2009-09-10 2012-07-18 퀄컴 인코포레이티드 Wireless power for heating or cooling
KR20140085816A (en) * 2012-12-27 2014-07-08 전자부품연구원 Electric range equipped with wireless energy transfer apparatus

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