WO2014174828A1 - 誘導加熱調理器 - Google Patents
誘導加熱調理器 Download PDFInfo
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- WO2014174828A1 WO2014174828A1 PCT/JP2014/002235 JP2014002235W WO2014174828A1 WO 2014174828 A1 WO2014174828 A1 WO 2014174828A1 JP 2014002235 W JP2014002235 W JP 2014002235W WO 2014174828 A1 WO2014174828 A1 WO 2014174828A1
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- heating
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- heating coil
- heated
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- 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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
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- 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
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
- H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the present disclosure relates to an induction heating cooker for inductively heating an object to be heated such as a metal cooking pot placed on a top plate.
- the induction heating cooker generally used as an induction heating cooker, one or more heating coils are disposed immediately below the top plate for one heating port, and the top plate is made by the heating coils. It is comprised so that induction heating of the metal cooking pot etc. which are the to-be-heated materials mounted on upper part may be carried out.
- the induction heating cooker in which a plurality of heating coils are disposed under the top plate, power consumption, heat generation and unnecessary radiation at the time of detection of the object to be heated (load) are suppressed, and the object to be heated ( It is an object of the present invention to provide an induction heating cooker in which the time taken for load detection is short.
- an induction heating cooker concerning this indication is: A body that constitutes an outer shell, A top plate which is disposed on the upper surface of the main body and on which the object to be heated is placed; A plurality of heating coils disposed below the top plate and heating the object by induction heating; An inverter circuit for supplying a high frequency current to the plurality of heating coils; Load detection means for detecting that the object to be heated has been placed immediately above the top plate for each of the plurality of heating coils; An operation unit operated by a user, wherein an individual area is provided corresponding to each of the plurality of heating coils; Display means for displaying a selection state of each of the plurality of heating coils; Operation detection means for outputting a detection signal of an operation related to each area of the operation unit by the operation on the operation unit; The inverter circuit, the load detection unit, and a control unit that controls the operation of the display unit.
- the operation detection unit outputs, to the control unit, a detection signal indicating that two or more heating coils of the plurality of heating coils are selected, corresponding to the operated area of the operation unit.
- the control unit instructs the load detection means to detect that the object to be heated has been placed immediately above only for the selected heating coil indicated by the detection signal.
- the control unit is configured to perform display according to a selection state of each of the plurality of heating coils in the vicinity of an individual area of the operation unit corresponding to the selected heating coil indicated by the detection signal. Instruct the display means.
- the user can select in advance a heating coil to be used from among a plurality of heating coils, and the load detection operation is not performed on heating coils other than the selected heating coil. Can be controlled.
- induction heating cooker when one object to be heated is heated by a plurality of heating coils, power consumption, heat generation, and unnecessary radiation in load detection are suppressed by limiting the heating coils used in advance. And the time required for load detection is further reduced.
- FIG. 1 is a block diagram of an induction heating cooker according to a first embodiment. It is a top view of the induction heating cooker which concerns on Embodiment 1, Comprising: It is a figure which shows the arrangement
- FIG. 2 is a diagram showing the configuration of an operation unit according to Embodiment 1;
- the above-mentioned conventional induction heating cooker in which a plurality of heating coils are arranged adjacent to each other promptly detects the position at which the cooking pot is placed.
- a current having a frequency higher than the current of the frequency normally applied is supplied to each heating coil, and the load is applied based on the current value flowing to the heating coil at that time.
- a method of determining whether or not the pan is placed.
- the induction heating cooker needs to always execute the detecting operation of the cooking pot, there is a problem that the heat generated by the heating coil and the corresponding inverter without the object to be heated increases, and by the detecting operation There is a problem that unwanted radiation noise occurs.
- the method of switching the heating coil of the object which sends the electric current of a high frequency one by one is also disclosed.
- the number of inverters can be smaller than the number of heating coils.
- the number of times of switching the connection between the heating coil and the inverter becomes extremely large, which causes a problem that the durability of the switching circuit including a relay or the like tends to be insufficient.
- high frequency current is supplied sequentially and periodically to each heating coil, it is more and more time from loading (cooking pan) to detection as the number of heating coils increases. There is also the problem of
- the induction heating cooker of the present disclosure solves the above-described conventional problems.
- the induction heating cooker of the present disclosure suppresses power consumption, heat generation, and unnecessary radiation at the time of detecting a load (for example, a cooking pot) in a configuration in which a plurality of heating coils are disposed below the top plate Reduce the time required for object detection.
- a main body forming an outer shell, a top plate disposed on an upper surface of the main body for mounting an object to be heated, and a plurality of elements disposed under the top plate and heating the object to be heated by induction heating.
- an inverter circuit for supplying a high frequency current to the plurality of heating coils, and a load detection for detecting that the object to be heated is placed directly on the top plate with respect to each of the plurality of heating coils.
- Operation detecting means for outputting a detection signal of an operation related to each area of the operation unit by the operation on the operation unit, the inverter circuit, and the load detection It means, and a control unit for controlling the operation of said display means,
- the operation detection unit outputs, to the control unit, a detection signal indicating that two or more heating coils of the plurality of heating coils are selected, corresponding to the operated area of the operation unit.
- the control unit instructs the load detection means to detect that the object to be heated has been placed immediately above only for the selected heating coil indicated by the detection signal.
- control unit is configured to perform display according to a selection state of each of the plurality of heating coils in the vicinity of an individual area of the operation unit corresponding to the selected heating coil indicated by the detection signal. It is an induction heating cooker characterized by instructing a display means.
- the induction heating cooker performs load detection only on the heating coil selected by the user, and thus does not perform load detection of the heating coil which is not scheduled to be heated. Therefore, power consumption, heat generation of the inverter and the heating coil, unnecessary radiation can be suppressed, and the time required for load detection can be shortened. Further, since the display means displays in the vicinity of the operation unit corresponding to each of the plurality of heating coils, an image regarding the range of the heating coil to be actually heated and an image regarding the operation range in the operation unit are It becomes easy for the user to agree. Furthermore, the user can intuitively grasp the position to be selected for heating, and the heating coil can be selected by a simple operation.
- a main body forming an outer shell, a top plate disposed on an upper surface of the main body for placing an object to be heated, and a plurality of elements disposed under the top plate and heating the object to be heated by induction heating.
- an inverter circuit for supplying a high frequency current to the plurality of heating coils, and a load detection for detecting that the object to be heated is placed directly on the top plate with respect to each of the plurality of heating coils.
- Means and an operating unit operated by the user wherein an individual area is provided corresponding to each of the plurality of heating coils, and a selection state of each of the plurality of heating coils , And at least two or more electrodes, and the individual areas of the operating unit are continuously Comprising an operation detection means for outputting a detection signal of the operation, the inverter circuit, the load detecting means, and a control unit for controlling the operation of the display means that,
- the operation detection means corresponds to a continuous area on the movement locus operated in the operation unit, the operation detection means indicates a detection signal indicating that two or more heating coils are selected from the plurality of heating coils.
- the control unit instructs the load detection means to detect that the object to be heated has been placed immediately above only for the selected heating coil indicated by the detection signal. Furthermore, the control unit is configured to perform display according to a selection state of each of the plurality of heating coils in the vicinity of an individual area of the operation unit corresponding to the selected heating coil indicated by the detection signal. It is an induction heating cooker characterized by instructing a display means.
- the induction heating cooker according to the second aspect performs load detection only on the heating coil selected by the user, and thus does not perform load detection of the heating coil which is not scheduled to be heated. Therefore, power consumption, heat generation of the inverter and the heating coil, unnecessary radiation can be suppressed, and the time required for load detection can be shortened. Further, since the display means displays in the vicinity of the operation unit corresponding to each of the plurality of heating coils, an image regarding the range of the heating coil to be actually heated and an image regarding the operation range in the operation unit are It becomes easy for the user to agree. Furthermore, when selecting a plurality of heating coils, the user can easily select the user simply by tracing the operation unit corresponding to the heating coil to be actually heated.
- the control unit displays a display in the vicinity of each area of the operation unit, which corresponds to the heating coil determined by the load detection unit to be absent immediately above. Control to turn off the light or decrease the brightness of the display, Further, the control unit is an induction heating cooker characterized in that the load detection means controls so as to stop the supply of power to the heating coil which is determined that the heating target is not present immediately above.
- the heating coil may be selected in a range somewhat larger than the one. That is, the range of the heating coil can be selected by a simple operation, and power consumption, heat generation of the inverter and the heating coil, unnecessary radiation can be suppressed, and the time required for load detection can be shortened.
- FIG. 1 is a block diagram of an induction heating cooker according to a first embodiment.
- FIG. 2 is a top view of the induction heating cooker according to the first embodiment, showing the arrangement of the heating coil 3 and the operation unit 7 in the induction heating cooker (however, the top plate 2 is omitted). ing.).
- FIG. 3 is a diagram showing the configuration of the operation unit 7 according to the first embodiment.
- the top plate 2 on which the object to be heated is placed is provided on the upper surface of the main body 1 constituting the shell.
- the top plate 2 is often made of crystallized glass, but may not be limited thereto.
- a plurality of heating coils 3 arranged vertically (in the horizontal direction in the drawing) are arranged.
- four heating coils are arranged. That is, four heating coils are comprised by the 1st heating coil 3a, the 2nd heating coil 3b, the 3rd heating coil 3c, and the 4th heating coil 3d.
- the plurality of heating coils below the top plate 2 (in the present embodiment, four heating coils) form a stove of one bite (the same applies to the following).
- the respective heating coils 3 (ie, the first heating coil 3a, the second heating coil 3b, the third heating coil 3c, and the fourth heating coil 3d) are supplied from the inverter circuit 4 according to the instruction of the control unit 5.
- the high frequency current generates a magnetic flux, thereby inductively heating the object placed on the top plate 2.
- the heating coils 3 are arranged four rows vertically and one column horizontally, but the arrangement is not limited to this as long as two or more heating coils are arranged.
- the control unit 5 is connected to the inverter circuit 4, the load detection unit 6, and the operation detection unit 8.
- the control unit 5 is connected directly or via the operation detection unit 8 and the operation detection unit 8 for the user of the induction heating cooker to instruct heating power and the like, and the inverter circuit 4 is operated according to the heating instruction from the user. Power the Here, the control unit 5 controls the power supplied so that the stove becomes the heating power (so-called) intended by the user.
- the load detection means 6 determines whether or not an object to be heated (for example, a cooking pot) is present immediately above each heating coil 3. In response to the determination result, the control unit 5 operates the heating coil 3 via the inverter circuit 4 so that only the heating coil 3 on which the object to be heated is directly performs the heating operation.
- an object to be heated for example, a cooking pot
- the load detection means 6 may detect the change of the electrostatic capacitance by the presence or absence of a to-be-heated material (cooking pan) by the electrode provided in the upper surface or lower surface of the top plate 2. Moreover, the load detection means 6 may detect the presence or absence of a load (object to be heated) by detecting a change in inductance of a separately provided detection coil. Furthermore, the load detection means 6 may detect the presence or absence of a load (an object to be heated) based on the response of the inverter circuit 4 when a high frequency current flows through the heating coil 3.
- the control unit 5 is often configured by a microcomputer, a DSP, and / or a custom IC, but may not be limited to them. Further, the control unit 5 and the load detection means 6 may constitute one element.
- the operation unit 7 is connected to the operation detection unit 8. As shown in FIGS. 2 and 3, the operating portion 7 on the top plate 2 corresponding to the first heating coil 3a, the second heating coil 3b, the third heating coil 3c and the fourth heating coil 3d. In the inside, areas of a first operation unit 7a, a second operation unit 7b, a third operation unit 7c and a fourth operation unit 7d are independently provided. This makes it easy for the user of the induction heating cooker to match the image regarding the range of the heating coil 3 to be actually heated and the image regarding the operation range (area) in the operation unit 7.
- the display means 9 is provided corresponding to the first heating coil 3a, the second heating coil 3b, the third heating coil 3c and the fourth heating coil 3d. That is, the first display unit 9a, the second display unit 9b, the third display unit 9c and the fourth display unit 9d are independently operated from the first operation unit 7a, the second operation unit 7b, and the fourth display unit 9d.
- the third operation unit 7c and the fourth operation unit 7d are disposed so as to surround them.
- the display means 9 comprises the first display means 9a, the second display means 9b, the third display means 9c, and the fourth display means 9d.
- the display means 9 is disposed so as to surround the periphery of the operation unit 7, but the present invention is not limited to this as long as the area corresponding to the heating coil can be indicated by the display means. May be
- the operation detection unit 8 is located below the operation unit 7 and connected to the operation unit 7.
- the operation detection unit 8 detects an operation of the operation unit 7 by the user.
- the operation detection unit 8 is configured of a first operation detection unit 8a, a second operation detection unit 8b, and a third operation detection unit 8c.
- the first operation detection means 8a, the second operation detection means 8b and the third operation detection means 8c are constituted by three conductive springs at the positions shown in FIG. .
- the operation detection means 8 is constituted of three conductive springs, but at least two or more of the conductive properties can be specified as long as the location (position) operated by the finger can be specified. It may be composed of an electrode such as metal or rubber.
- the pressed position can be specified by the ratio of the reaction strength of each electrode in the three operation detection means 8. If the operated position in the operation unit 7 can be specified according to the pressing strength on the operation unit 7 (and the operation detection unit 8), the detection mechanism of the position in the operation detection unit 8 is limited to this. is not.
- the detection operation of the corresponding operation detection means 8 when the user of the induction heating cooker operates between the first operation unit 7a and the second operation unit 7b, the detection operation of the corresponding operation detection means 8; Further, the heating coil 3 can be used in the range of the corresponding first heating coil 3a and the second heating coil 3b by the control operation of the control unit 5 having received the detection signal by the detection operation. It is done. When the user of the induction heating cooker operates between the third operation unit 7c and the fourth operation unit 7d, the detection operation of the corresponding operation detection means 8 and the detection signal by the detection operation are The heating coil 3 can be used in the range of the corresponding third heating coil 3c and the corresponding fourth heating coil 3d by the control operation of the control unit 5 received.
- heating coil 3 can be used by the range of all the heating coils 3 It is configured as follows.
- the two heating coils 3 (third heating coil 3c and fourth heating coil 3d) on the upper side (the rear side of the main body) and the lower side (the front side of the main body) ) So that one of the two heating coils 3 (the first heating coil 3a and the second heating coil 3b) or all the heating coils 3 can be selected.
- the control unit 5 is configured.
- the heating coil be selected so as to be convenient for the user, and may not be limited to the selection pattern as described above.
- the load detection means 6 determines whether or not there is an object to be heated immediately above each of the selected first heating coil 3a and second heating coil 3b. If the load detection means 6 determines that the object to be heated is present immediately above both of the first heating coil 3a and the second heating coil 3b, the control unit 5 having received the determination signal is an inverter Control is performed to supply power to the first heating coil 3a and the second heating coil 3b from the circuit 4. The induction heating cooker will cook as it is. On the other hand, if the load detection means 6 determines that the object to be heated is present only immediately above either one of the first heating coil 3a or the second heating coil 3b and the other does not exist. The control unit 5 having received the determination signal stops the supply of power to the heating coil 3 which is determined to have no object to be heated, and turns off one of the corresponding display means 9. Control.
- the control unit 5 displays the display means 9 corresponding to the heating coil 3. It turned off.
- the present invention is not limited to this as long as it can be determined whether the heating coil 3 is stopping or heating, for example, the control unit 5 blinks the display means 9 corresponding to the heating coil 3 or It may be switched to dark lighting.
- the control unit 5 When the load detection means 6 determines that the object to be heated does not exist immediately above all the selected heating coils 3, the control unit 5 having received the determination signal corresponds to the selected heating coil 3. All the displayed means 9 are blinked, and after several seconds, the state is shifted to the initial state.
- the operation detection unit 8 operates the third operation unit 7c and the fourth operation unit 7d as in the above operation. It is determined that both are selected.
- the control unit 5 having received the detection signal from the operation detection unit 8 instructs the corresponding third display unit 9c and the fourth display unit 9d to emit light.
- the load detection means 6 determines whether or not there is an object to be heated immediately above each of the selected third heating coil 3c and fourth heating coil 3d. If the load detection means 6 determines that the object to be heated is present immediately above both the third heating coil 3c and the fourth heating coil 3d, the control unit 5 having received the determination signal determines that the inverter is an inverter Control is performed to supply power from the circuit 4 to the third heating coil 3c and the fourth heating coil 3d. The induction heating cooker will cook as it is. On the other hand, if the load detection means 6 determines that the object to be heated is present only immediately above either one of the third heating coil 3c or the fourth heating coil 3d and the other does not exist. The control unit 5 having received the determination signal stops the supply of power to the heating coil 3 which is determined to have no object to be heated, and turns off one of the corresponding display means 9. Control.
- the control unit 5 When the load detection means 6 determines that the object to be heated does not exist immediately above all the selected heating coils 3, the control unit 5 having received the determination signal corresponds to the selected heating coil 3. All the displayed means 9 are blinked, and after several seconds, the state is shifted to the initial state.
- the operation detection unit 8 determines that all of the first operation unit 7a to the fourth operation unit 7d have been selected. Ru.
- the control unit 5 having received the detection signal from the operation detection unit 8 instructs the corresponding first display unit 9a to the fourth display unit 9d to emit light.
- the load detection means 6 determines whether or not an object to be heated is present immediately above each of the selected first heating coil 3a to fourth heating coil 3d. If the load detection means 6 determines that the object to be heated is present immediately above all of the first heating coil 3a to the fourth heating coil 3d, the control unit 5 having received the determination signal is an inverter circuit. Control is performed to supply power to all the heating coils 3. The induction heating cooker will cook as it is. On the other hand, in the load detecting means 6, the object to be heated is present only immediately above the heating coil 3 of any of the first heating coil 3 a to the fourth heating coil 3 d, and directly above the other heating coil 3.
- control unit 5 If it is determined that the object does not exist, the control unit 5 having received the determination signal stops the supply of the power to the heating coil 3 determined that the object to be heated does not exist immediately above, and the corresponding display means 9 Control is performed to turn off the light or to decrease the luminance of the corresponding display means 9.
- the control unit 5 When the load detection means 6 determines that the object to be heated does not exist immediately above all the selected heating coils 3, the control unit 5 having received the determination signal displays the first display means 9 a to the first display means 9 a. All the display means 9d of 4 are blinked, and after several seconds, the state is shifted to the initial state. However, the plurality of heating coils 3 in which the object to be heated is present are separated, for example, the object to be heated is present only directly on the first heating coil 3a and the fourth heating coil 3d. If there is no object to be heated immediately above the heating coil 3 during that time, it is considered that the situation is being used with an intention different from the original usage, so an error indication is displayed on the display means 9 according to the instruction of the control unit 5 Be done.
- the heating coil to be used is selected in the operation unit 7 depending on the position of the area touched by the finger and operated.
- the operation detection unit 8 for detecting an operation on the operation unit 7 outputs a detection signal according to the movement locus of the finger in the operation unit 7, and the control unit 5 uses the heating coil based on the detection signal. If the configuration of selecting is adopted, the operability is further improved.
- the finger moves (Operation) Three operation units 7 from the first operation unit 7a to the third operation unit 7c corresponding to the locus are selected.
- the display unit 9 corresponding to the selected operation unit 7 emits light and load detection immediately above the corresponding heating coil 3 is started, as in the above-described operation.
- the user can freely select a plurality of continuously arranged operation units 7. For example, the user freely feels freely the operation unit 7 (and the heating coil 3) without having to learn the operation rule such as "when both the operation units 7 are operated, both operation units 7 are selected". Can be selected.
- the operation unit 7 is assumed to be, for example, an electrostatic touch type operated by contact of a finger.
- the electrostatic touch type operation unit Even if it is not, for example, a necessary and sufficient function and effect can be obtained by using an operation unit configured by a tactile switch that presses and inputs a switch.
- control unit 5 and the inverter circuit 4 for the heating coil 3 determined as the absence of the object to be heated out of the selected heating coils 3, We are trying to stop the supply of power.
- control unit 5 may stop supplying power for the first time after a predetermined time has elapsed from when it is determined by the load detection unit 6 that the object to be heated is not present immediately above. Furthermore, the control unit 5 may blink the display unit 9 corresponding to the heating coil 3 determined to have no object to be heated immediately above until the supply of power is stopped. By doing this, the user can be notified of the misalignment between the position of the object to be heated and the position of the selected heating coil 3. If there is an error in the position where the object to be heated is placed, the notification gives the user a grace period in which the position where the object to be heated is placed should be corrected.
- the heating coil 3 determined to have no object to be heated immediately above is automatically left as it is. Power supply will be shut down.
- a waiting time for a predetermined time from when operation portion 7 corresponding to heating coil 3 to be used is operated (selected) to when heating is actually started May be provided.
- a heating start operation unit may be separately provided, and heating may be started after the heating start operation unit is operated.
- the induction heating cooker according to the present disclosure is provided with an operation system having a sense of security that is easy for the user to handle.
- the detection operation of the object to be heated is performed only on the heating coil scheduled to be used which the user selects in advance. That is, the induction heating cooker which concerns on this Embodiment does not perform the detection operation of a to-be-heated material about the heating coil which is not selected and which is not scheduled to heat.
- the induction heating cooker according to the present embodiment can reduce the power consumption, the heat generation of the inverter and the heating coil, the unnecessary radiation, and the time required for the load detection operation.
- the image regarding the range of the heating coil (s) 3 to be actually heated and the image regarding the operating range in the operation unit 7 and the display means 9 easily match. That is, the user can intuitively grasp the position (place) to be selected for heating.
- the induction heating cooker according to the present embodiment when the user selects a plurality of heating coils, the user can easily select the display position of the heating coil which he / she wants to actually heat by tracing his / her finger. Thus, the operability of the induction heating cooker according to the present embodiment is high.
- the induction heating cooker which concerns on this Embodiment, when selecting the heating coil which a user plans to use, it is not necessary to grasp
- the induction heating cooker according to the present disclosure can suppress power consumption, heat generation, and unnecessary radiation at the time of load detection by preselecting the heating coil scheduled to be used. It can apply to the induction heating apparatus which heats one to-be-heated material by a coil.
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Abstract
Description
外郭を構成する本体と、
前記本体の上面に設置され被加熱物を載置するトッププレートと、
前記トッププレートの下方に配置され前記被加熱物を誘導加熱により加熱する複数の加熱コイルと、
前記複数の加熱コイルに高周波電流を供給するインバータ回路と、
前記複数の加熱コイルの夫々について前記トッププレートを介して直上に被加熱物が載置されたことを検出する負荷検出手段と、
使用者により操作される操作部であって、前記複数の加熱コイルの各々に対応して、個々のエリアが設けられている、操作部と、
前記複数の加熱コイルの各々の選択状態を表示する表示手段と、
前記操作部に対する操作により前記操作部の個々のエリアに関する操作の検出信号を出力する操作検出手段と、
前記インバータ回路、前記負荷検出手段、及び前記表示手段の動作を制御する制御部と
を備え、
前記操作部のうち操作されたエリアに対応して、前記操作検出手段は、前記複数の加熱コイルのうち2つ以上の加熱コイルが選択されることを示す検出信号を、前記制御部に出力し、
前記制御部は、検出信号が示す選択された加熱コイルについてのみ、直上に被加熱物が載置されたことを検出するように負荷検出手段に指示し、
更に、前記制御部は、前記複数の加熱コイルの各々の選択状態に係る表示を、検出信号が示す選択された加熱コイルに対応する、前記操作部の個々のエリアの近傍にて行うように前記表示手段に指示する。
特許文献1に開示される従来の誘導加熱調理器では、トッププレートの下に敷き詰められた複数の加熱コイルが近接して配置されている。この従来の誘導加熱調理器は、調理用鍋などの被加熱物がトッププレートのいずれの位置に載置されても、載置された位置に応じてそれら被加熱物を誘導加熱し得る構成を有している。
前記操作部のうち操作されたエリアに対応して、前記操作検出手段は、前記複数の加熱コイルのうち2つ以上の加熱コイルが選択されることを示す検出信号を、前記制御部に出力し、
前記制御部は、検出信号が示す選択された加熱コイルについてのみ、直上に被加熱物が載置されたことを検出するように負荷検出手段に指示し、
更に、前記制御部は、前記複数の加熱コイルの各々の選択状態に係る表示を、検出信号が示す選択された加熱コイルに対応する、前記操作部の個々のエリアの近傍にて行うように前記表示手段に指示する
ことを特徴とする誘導加熱調理器である。
前記操作部のうちの操作された、移動軌跡上の連続するエリアに対応して、操作検出手段は、前記複数の加熱コイルのうち2つ以上の加熱コイルが選択されることを示す検出信号を、前記制御部に出力し、
前記制御部は、検出信号が示す選択された加熱コイルについてのみ、直上に被加熱物が載置されたことを検出するように負荷検出手段に指示し、
更に、前記制御部は、前記複数の加熱コイルの各々の選択状態に係る表示を、検出信号が示す選択された加熱コイルに対応する、前記操作部の個々のエリアの近傍にて行うように前記表示手段に指示する
ことを特徴とする誘導加熱調理器である。
前記制御部は、検出信号が示す選択された加熱コイルのうち、前記負荷検出手段が直上に被加熱物が存在しないと判定した加熱コイルに対応する、前記操作部の個々のエリアの近傍における表示を消灯するように、若しくは表示の輝度を低下するように制御し、
更に、前記制御部は、前記負荷検出手段が直上に被加熱物が存在しないと判定した加熱コイルに対する電力の供給を停止するように制御する
ことを特徴とする誘導加熱調理器である。
図1は、実施の形態1に係る誘導加熱調理器のブロック図である。図2は、実施の形態1に係る誘導加熱調理器の上面図であって、誘導加熱調理器における加熱コイル3と操作部7の配置状態を示す図である(但し、トッププレート2は省かれている。)。更に、図3は、実施の形態1に係る操作部7の構成を示す図である。
図1に示す誘導加熱調理器において、外郭を構成する本体1の上面に被加熱物を載置するトッププレート2が設置されている。トッププレート2は、結晶化ガラスで作製されることが多いが、それに限らなくてもよい。
[2.1.操作部による加熱コイルの選択動作]
次に、操作部7による対象の加熱コイル3の選択について説明する。本実施の形態では、第1の操作部7a~第4の操作部7dから成る4つの操作部7に対して、第1の操作検出手段8a~第3の操作検出手段8cの3つの操作検出手段8が設けられている。そして、3つの操作検出手段8(第1の操作検出手段8a~第3の操作検出手段8c)の各々の電極の反応の強さに応じて、操作部7における操作された位置を特定するように構成されている。
上述のように、第1の操作部7aと第2の操作部7bの間が操作されると、操作検出手段8により第1の操作部7aと第2の操作部7bの両方が選択されたと判定される。操作検出手段8からの検出信号を受けた制御部5は、対応する第1の表示手段9aと第2の表示手段9bとの両方を発光させる指示を出す。
本実施の形態に係る誘導加熱調理器では、操作部7において、指で触れられて操作されたエリアの位置によって、使用する加熱コイルが選択される。ここで、操作部7に対する操作を検出する操作検出手段8が、操作部7における指の移動軌跡に応じた検出信号を出力し、この検出信号に基づいて制御部5が、使用される加熱コイルを選択する、という構成が採用されれば、更に操作性が向上する。
本実施の形態に係る誘導加熱調理器においては、選択された加熱コイル3のうち直上に被加熱物が存在しないと判定された加熱コイル3に対しては、制御部5及びインバータ回路4は、電力の供給を停止するようにしている。
以上のように、本実施の形態に係る誘導加熱調理器は、使用者が予め選択する使用予定の加熱コイルに対してのみ被加熱物の検出動作が行われる。つまり、本実施の形態に係る誘導加熱調理器は、選択されない、加熱する予定のない加熱コイルについては被加熱物の検出動作を行わない。
2 トッププレート
3 加熱コイル
3a 第1の加熱コイル
3b 第2の加熱コイル
3c 第3の加熱コイル
3d 第4の加熱コイル
4 インバータ回路
5 制御部
6 負荷検出手段
7 操作部
7a 第1の操作部
7b 第2の操作部
7c 第3の操作部
7d 第4の操作部
8 操作検出手段
8a 第1の操作検出手段
8b 第2の操作検出手段
8c 第3の操作検出手段
9 表示手段
9a 第1の表示手段
9b 第2の表示手段
9c 第3の表示手段
9d 第4の表示手段
Claims (3)
- 外郭を構成する本体と、
前記本体の上面に設置され被加熱物を載置するトッププレートと、
前記トッププレートの下方に配置され前記被加熱物を誘導加熱により加熱する複数の加熱コイルと、
前記複数の加熱コイルに高周波電流を供給するインバータ回路と、
前記複数の加熱コイルの夫々について前記トッププレートを介して直上に被加熱物が載置されたことを検出する負荷検出手段と、
使用者により操作される操作部であって、前記複数の加熱コイルの各々に対応して、個々のエリアが設けられている、操作部と、
前記複数の加熱コイルの各々の選択状態を表示する表示手段と、
前記操作部に対する操作により前記操作部の個々のエリアに関する操作の検出信号を出力する操作検出手段と、
前記インバータ回路、前記負荷検出手段、及び前記表示手段の動作を制御する制御部と
を備え、
前記操作部のうち操作されたエリアに対応して、前記操作検出手段は、前記複数の加熱コイルのうち2つ以上の加熱コイルが選択されることを示す検出信号を、前記制御部に出力し、
前記制御部は、検出信号が示す選択された加熱コイルについてのみ、直上に被加熱物が載置されたことを検出するように負荷検出手段に指示し、
更に、前記制御部は、前記複数の加熱コイルの各々の選択状態に係る表示を、検出信号が示す選択された加熱コイルに対応する、前記操作部の個々のエリアの近傍にて行うように前記表示手段に指示する
ことを特徴とする誘導加熱調理器。 - 外郭を構成する本体と、
前記本体の上面に設置され被加熱物を載置するトッププレートと、
前記トッププレートの下方に配置され前記被加熱物を誘導加熱により加熱する複数の加熱コイルと、
前記複数の加熱コイルに高周波電流を供給するインバータ回路と、
前記複数の加熱コイルの夫々について前記トッププレートを介して直上に被加熱物が載置されたことを検出する負荷検出手段と、
使用者により操作される操作部であって、前記複数の加熱コイルの各々に対応して、個々のエリアが設けられている、操作部と、
前記複数の加熱コイルの各々の選択状態を表示する表示手段と、
少なくとも2つ以上の電極からなり、前記操作部に対して使用者の指により接触される移動軌跡に応じて連続して前記操作部の個々のエリアに関する操作の検出信号を出力する操作検出手段と、
前記インバータ回路、前記負荷検出手段、及び前記表示手段の動作を制御する制御部と
を備え、
前記操作部のうちの操作された、移動軌跡上の連続するエリアに対応して、操作検出手段は、前記複数の加熱コイルのうち2つ以上の加熱コイルが選択されることを示す検出信号を、前記制御部に出力し、
前記制御部は、検出信号が示す選択された加熱コイルについてのみ、直上に被加熱物が載置されたことを検出するように負荷検出手段に指示し、
更に、前記制御部は、前記複数の加熱コイルの各々の選択状態に係る表示を、検出信号が示す選択された加熱コイルに対応する、前記操作部の個々のエリアの近傍にて行うように前記表示手段に指示する
ことを特徴とする誘導加熱調理器。 - 前記制御部は、検出信号が示す選択された加熱コイルのうち、前記負荷検出手段が直上に被加熱物が存在しないと判定した加熱コイルに対応する、前記操作部の個々のエリアの近傍における表示を消灯するように、若しくは表示の輝度を低下するように制御し、
更に、前記制御部は、前記負荷検出手段が直上に被加熱物が存在しないと判定した加熱コイルに対する電力の供給を停止するように制御する
ことを特徴とする請求項1又は2に記載の誘導加熱調理器。
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