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WO2009125453A1 - Dispositif de cuisson à chauffage par induction - Google Patents

Dispositif de cuisson à chauffage par induction Download PDF

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Publication number
WO2009125453A1
WO2009125453A1 PCT/JP2008/000920 JP2008000920W WO2009125453A1 WO 2009125453 A1 WO2009125453 A1 WO 2009125453A1 JP 2008000920 W JP2008000920 W JP 2008000920W WO 2009125453 A1 WO2009125453 A1 WO 2009125453A1
Authority
WO
WIPO (PCT)
Prior art keywords
induction heating
unit
heating cooker
operation switch
detection unit
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.)
Ceased
Application number
PCT/JP2008/000920
Other languages
English (en)
Japanese (ja)
Inventor
富永博
小笠原史太佳
磯田恵子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to PCT/JP2008/000920 priority Critical patent/WO2009125453A1/fr
Priority to JP2009517730A priority patent/JP5148606B2/ja
Priority to PCT/JP2008/001449 priority patent/WO2008149560A1/fr
Priority to US12/663,305 priority patent/US8389905B2/en
Priority to HK10108110.6A priority patent/HK1141658B/xx
Priority to ES08764047.0T priority patent/ES2553408T3/es
Priority to CN2008800191641A priority patent/CN101682945B/zh
Priority to EP08764047.0A priority patent/EP2166816B1/fr
Priority to CN2008800191054A priority patent/CN101682944B/zh
Priority to EP08764046.2A priority patent/EP2166815B1/fr
Priority to US12/663,377 priority patent/US8383989B2/en
Priority to HK10108279.3A priority patent/HK1141931B/xx
Priority to PCT/JP2008/001450 priority patent/WO2008149561A1/fr
Priority to ES08764046.2T priority patent/ES2557173T3/es
Publication of WO2009125453A1 publication Critical patent/WO2009125453A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05B6/10—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

Definitions

  • the present invention relates to an induction heating cooker provided with a capacitance type switch.
  • a conventional induction heating cooker is provided with an operation unit for a user to operate heating of an object to be heated and a back surface of the operation unit, and the user's finger is an operation unit.
  • a conductive detection unit that detects that the heating unit is touched, and a control unit that controls the heating coil based on the detection result of the detection unit.
  • the detection part and the control part are electrically connected by connecting the conductive connection part and the control part, which are electrically connected to the detection part by a connection conductor, with a connection terminal.
  • the conventional induction heating cooking appliance illuminates the operation part from below with a backlight, and a transparent part that allows illumination light from the backlight to pass is provided around the operation part. Thereby, the position of the operation unit and the operation content indicated by the operation unit are shown to the user.
  • Japanese Patent No. 3741667 Japanese Patent No. 3741667
  • the connection part for making contact with the connection terminal is conductive, when the user's finger touches the connection part, it is the same as when the user's finger touches the detection part In addition, there is a problem that the capacitance of the connection portion is changed, and the control unit erroneously determines that the operation unit has been operated.
  • the conventional induction heating cooker has a transparent part that allows illumination light from the backlight to pass around the operation part, so the connecting part is arranged outside the transparent part so as not to block the transparent part. It was. For this reason, the connecting portion is located away from the detecting portion, and the operation caused by touching the connecting portion is a malfunction that is not intended by the user.
  • This invention solves the said problem, and aims at providing the induction heating cooking appliance which prevents the malfunction which a user does not intend.
  • An induction heating cooker includes a top plate on which an object to be heated is placed, a heating coil that is provided below the top plate and generates a magnetic field to inductively heat the object to be heated, and an output of the heating coil
  • a control unit that controls the operation switch, and further includes one or more operation switches provided on the top plate, a light source that irradiates the operation switch, the operation switch, and the control unit. And a connection terminal to be connected to.
  • the operation switch includes a conductive detection unit that detects that a user has touched the battery by a change in capacitance, and a conductive connection unit that contacts the connection terminal. It is formed so as to be directly connected to a part of the outer edge.
  • light source corresponds to “backlight 17” in the embodiment
  • control unit corresponds to “printed wiring board 24” in the embodiment.
  • the operation switch may further include a frame display unit that displays a frame of the detection unit formed by cutting out a part of the detection unit.
  • the operation switch may further be provided with an operation content display unit formed by cutting out a part of the detection unit inside the frame display unit to indicate the content of the operation switch.
  • the induction heating cooker further includes a light-shielding unit that prevents light from the light source from being irradiated in front of the top plate on the outer periphery of the detection unit, and the inner edge of the light-shielding unit includes the outer edge of the frame display unit and the outer edge of the detection unit.
  • the outer edge of the light shielding part may be outside the outer edge of the light source.
  • connection part may be provided in the vertical direction from the detection part.
  • the detection unit may be provided above the light source, and a part of the connection unit may be provided outside the light source.
  • the light source may irradiate only operation switches that can be used in the operating state of the induction heating cooker.
  • the induction heating cooker of the present invention it is possible to prevent the malfunction that is not intended by the user.
  • the top view which shows the top plate of embodiment of this invention A plan view showing operation switches provided on the top board Sectional view along the line AA in FIG.
  • An induction heating cooker includes a main body including an inverter, a cooling fan, and the like, and a top unit attached to an upper portion of the main body.
  • the top unit includes a top plate made of crystallized ceramic that transmits light, and a metal frame provided around the top plate. Below the top plate, at least one (two in FIG. 1) heating coil that generates a magnetic field and induction-heats an object to be heated is provided.
  • the top plate provided in the induction heating cooker having the above-described configuration will be described below with reference to FIG.
  • FIG. 1 shows a top plate 11 of the induction heating cooker of the present invention.
  • heating units 12a and 12b indicating the place where the object to be heated is placed are displayed by printing.
  • the heating units 12a and 12b are displayed by forming a printed film in a circular shape at a position corresponding to the heating coil (the heating coil 10 in FIG. 3) provided below.
  • operation units 13a and 13b for setting the output of turning on / off of the heating coil 10 and display units 15a and 15b for displaying the operating states of the heating units 12a and 12b are provided. .
  • the heating units 12a and 12b, the operation units 13a and 13b, and the display units 15a and 15b are provided in the same number as the heating coil 10, respectively. Since the heating units 12a and 12b, the operation units 13a and 13b, and the display units 15a and 15b provided on the left and right have the same structure, the left heating unit 12a, the operation unit 13a, and the display unit 15a are representatively used. This will be described below.
  • the operation unit 13a includes a plurality of operation switches 30a to 34a.
  • the operation switches 30a to 34a are capacitive switches that detect that the user's finger has touched.
  • a plurality of operation switches 30a to 34a are a menu switch 34a, a heating switch 33a, a heating power adjustment switch 31a, a heating power adjustment switch 32a, and a timer switch 30a.
  • the menu switch 34a is a switch for controlling the validity / invalidity of the operation of the other operation switches 30a to 33a, and is a switch that is lit first when the power is turned on.
  • the heating switch 33a is a switch for starting / stopping heating of the object to be heated.
  • the thermal power adjustment switch 31a is a switch for lowering the thermal power, and the thermal power gradually decreases each time the thermal power adjustment switch 31a is pressed.
  • the thermal power adjustment switch 32a is a switch for increasing the thermal power, and the thermal power gradually increases every time the thermal power adjustment switch 32a is pressed.
  • the timer switch 30a is a switch for setting the cooking time. For example, the cooking time increases every time the timer switch 30a is pressed, and the remaining cooking time set by the timer switch 30a is displayed on the display unit 15a.
  • FIG. 2 is a plan view showing the operation switch 32a showing a triangular shape for adjusting the heating power.
  • FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and further shows a part of the top plate 11 and the heating coil 10.
  • the operation switch 32a includes a detection unit 18 that detects that the user's finger has touched, and a connection unit 16 that makes the conductive connection terminal 23 contact.
  • the detection unit 18 includes a frame display unit 20 for indicating the approximate size and position of the outer periphery of the detection unit 18, and an operation content display unit 21 for indicating the operation content of the operation switch 32a.
  • the detection unit 18 and the connection unit 16 are formed by printing electrodes 19 a to 19 d (hereinafter, the electrodes 19 a to 19 d are collectively referred to as “electrode 19”) on the back surface of the top plate 11.
  • the operation content display unit 21 is formed by cutting out from the electrode 19.
  • the induction cooking device of the present invention has a backlight 17 below the detection unit 18.
  • the light from the backlight 17 is emitted upward through the frame display unit 20 and the operation content display unit 21 so that the user can determine the content and position of the operation switch 32a.
  • the backlight 17 is provided for each operation switch so that the plurality of operation switches 30a to 34a shown in FIG. 1 can be individually turned on. Only the operation switch that can be used in each operation state of the induction heating cooker is provided. Lights up. For example, the backlight 17 lights the operation switch 32a for adjusting the thermal power only during heating.
  • the induction heating cooker of the present invention has a light shielding part 22 for shielding light from the backlight 17 on the outer periphery of the detection part 18.
  • the light shielding unit 22 is, for example, a black light absorbing film having a light transmittance of substantially zero.
  • the light-shielding part 22 is positioned so that the position of the inner edge of the light-shielding part 22 is within the range of the width of the electrode 19a outside the frame display part 20, that is, inside the outer edge of the electrode 19a and outside the inner edge of the electrode 19a.
  • the outer edge of the light shielding unit 22 is printed on the rear surface of the top plate 11 so that the outer edge is located outside the outer edge of the backlight 17.
  • connection unit 16 is provided in a direction away from the user so as to be directly connected to a part of the outer edge of the detection unit 18.
  • the external width dimension of the connection part 16 is smaller than that of the detection part 18 and is large enough to contact the connection terminal 23.
  • the connection portion 16 is provided so that most of the connection portion 16 is outside the backlight 17 in order to prevent the backlight 17 and the connection terminal 23 from interfering with each other and the connection terminal 23 to reflect light. It is done.
  • a high-frequency oscillation unit that applies a high-frequency voltage to the connection terminal 23 and a printed wiring board 24 that constitutes a circuit for detecting that a person has touched the electrode 19 are provided.
  • the detection unit 18 and the printed wiring board 24 are electrically connected.
  • the backlight 17 is connected to the printed wiring board 24 by lead wires.
  • the operation switch 32a showing a triangular shape for adjusting the thermal power is taken as an example, but the operation switch showing characters such as “timer”, “heating”, “menu”, etc. in FIG.
  • 30a, 33a, and 34a are formed by cutting out the electrode 19 to form an operation content display unit 21 that is a character portion and a frame display unit 20 that indicates the approximate size and position of the outer periphery of the detection unit 18. Is done.
  • the operation switches 30a to 34a configured as described above, when the user's finger touches the position of the top plate 11 facing the detection unit 18, the human body is equivalently connected to the ground by electric resistance and capacitance. As a result, the capacitance between the electrode 19 and the ground changes. Since the high-frequency voltage is supplied to the electrode 19 from the printed wiring board 24 through the connection terminal 23, the change in capacitance is transmitted to the printed wiring board 24 through the connection terminal 23, and the user It is determined that the operation switches 30a to 34a are operated. For example, the printed wiring board 24 reads a change in the magnitude of the voltage applied to the electrode 19 and determines the change in capacitance. Thereby, the control shown in the operation content display section 21 of the operation switches 30a to 34a is performed.
  • the separated electrode 19 is electrically connected by the capacitance formed between the separated electrodes 19. Therefore, even when the user touches only the electrode 19b inside the frame display unit 20 that is not directly connected to the connection unit 16, for example, the electric signal is transmitted to the inside of the frame display unit 20 due to the capacitance. It is transmitted from the electrode 19b to the outer electrode 19a, and it can be detected that the user has touched it.
  • the frame display unit 20 is formed by being cut out from the electrode 19, it is not necessary to provide a conventional transparent unit for transmitting light on the outer peripheral side of the detection unit 18. .
  • the connection part 16 can be provided so that it may contact
  • connection unit 16 is arranged in a direction away from the user from the detection unit 18, and the external dimension of the connection unit 16 is smaller than the detection unit 18. Thus, it is possible to prevent the user from touching the connecting portion 16 by mistake as much as possible.
  • connection portion 16 is provided so that most of the connection portion 16 is outside the backlight 17 indicated by a broken line, the frame display portion 20 is affected by the shadow of the connection terminal 23 that is in contact with the connection portion 16. The occurrence of uneven brightness can be suppressed. Moreover, it can prevent that the connection terminal 23 reflects the light of the backlight 17, and can suppress that the brightness
  • the connecting portion is separated from the detecting portion, and a part of the transparent portion (light emitting portion) is missing due to the connecting wire for connecting the detecting portion and the connecting portion.
  • the frame display unit 20 is formed by cutting out the electrode 19, a part of the frame display unit 20 is not lost and a complete rectangle can be represented. Therefore, it looks better than before.
  • the position on the inner edge side of the light shielding portion 22 only needs to be within the range of the width of the electrode 19a outside the frame display portion 20, printing of the light shielding portion 22 is slightly shifted from the outer edge side of the electrode 19a to the inner edge side. Even so, the light shielding portion 22 does not cover the frame display portion 20. That is, since there is a margin in the restriction of the position of the inner edge side of the light shielding part 22 by the width of the electrode 19a outside the frame display part 20, the width of the frame display part 20 is not increased due to the printing deviation of the light shielding part 22. Uniformity can be prevented.
  • the operation content display unit 21 is formed by cutting out the electrode 19, an effect of being easily understandable visually can be obtained in the light navigation in which only the usable operation switches 30a to 34a are turned on.
  • the electrodes 19a to 19d can be formed of, for example, a conductive paint coating film, a screen printing film, or a metal vapor deposition film.
  • the electrodes 19a to 19c constituting the detection unit 18 and the electrode 19d constituting the connection unit 16 may be the same electrode, or may be electrodes formed separately.
  • the electrodes 19a to 19d are provided on the back surface of the top plate 11.
  • the electrodes 19a to 19d may be provided on the surface of the top plate 11 or provided on the front and back surfaces of the top plate 11. Also good.
  • the area of the detection unit 18 indicates that the user touched the area without the detection unit 18 being insufficient even if the frame display unit 20 and the operation content display unit 21 were formed by cutting out the electrode 19. Any size that can be detected is acceptable.
  • the outer electrode 19a of the frame display unit 20 and the inner electrode 19b of the frame display unit 20 are completely separated by the frame display unit 20, but the outer electrode 19b is not separated completely.
  • the frame display unit 20 may be provided so that the electrode 19a and a part of the inner electrode 19b are connected. Thereby, since the outer electrode 19a and the inner electrode 19b are reliably electrically connected, the reliability regarding detection can be improved.
  • the operation content display unit 21 may be provided so that the separated electrode 19c and part of the electrode 19b are connected to the operation content display unit 21.
  • operation switches 30a to 34a of the operation unit 13 illustrated in FIG. 1 are merely examples, and operation switches for instructing other operations may be provided with the same configuration as in this embodiment.
  • the top unit is composed of the top plate 11 and the metal frame, but the metal frame may not be provided.
  • the induction cooking device of the present invention has an effect of preventing a malfunction that is not intended by the user, and is useful as an induction heating cooking device for home use incorporated in a kitchen or the like.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

La présente invention concerne un dispositif de cuisson à chauffage par induction qui prévient l’exécution d’opérations incorrectes involontaires de la part d’un utilisateur. Le dispositif de cuisson à chauffage par induction comprend une plaque supérieure conçue pour recevoir un objet devant être chauffé, un enroulement chauffant disposé sous la plaque supérieure et conçu pour chauffer l'objet devant être chauffé par induction en générant un champ magnétique, une section de réglage pour régler une sortie de l'enroulement chauffant, un commutateur de commande (32a) prévu sur la plaque supérieure, une source lumineuse (17) qui éclaire le commutateur de commande (32a), et une borne de connexion pour connecter électriquement le commutateur de commande (32a) à la section de réglage. Le commutateur de commande (32a) comprend une section de détection de conduction pour détecter une pression d'un utilisateur par une modification de sa capacitance, et une section de connexion de conduction (16) qui est en contact avec la borne de connexion, la section de connexion étant formée de telle sorte qu'elle est connectée directement à une partie d'une périphérie de la section de détection.
PCT/JP2008/000920 2007-06-07 2008-04-09 Dispositif de cuisson à chauffage par induction Ceased WO2009125453A1 (fr)

Priority Applications (14)

Application Number Priority Date Filing Date Title
PCT/JP2008/000920 WO2009125453A1 (fr) 2008-04-09 2008-04-09 Dispositif de cuisson à chauffage par induction
JP2009517730A JP5148606B2 (ja) 2007-06-07 2008-06-06 加熱調理器
PCT/JP2008/001449 WO2008149560A1 (fr) 2007-06-07 2008-06-06 Appareil de cuisson
US12/663,305 US8389905B2 (en) 2007-06-07 2008-06-06 Heating appliance for cooking
HK10108110.6A HK1141658B (en) 2007-06-07 2008-06-06 Cooking device
ES08764047.0T ES2553408T3 (es) 2007-06-07 2008-06-06 Aparato de cocina
CN2008800191641A CN101682945B (zh) 2007-06-07 2008-06-06 加热烹调器
EP08764047.0A EP2166816B1 (fr) 2007-06-07 2008-06-06 Dispositif de cuisson
CN2008800191054A CN101682944B (zh) 2007-06-07 2008-06-06 加热烹调器
EP08764046.2A EP2166815B1 (fr) 2007-06-07 2008-06-06 Appareil de cuisson
US12/663,377 US8383989B2 (en) 2007-06-07 2008-06-06 Cooking device
HK10108279.3A HK1141931B (en) 2007-06-07 2008-06-06 Heating cooker
PCT/JP2008/001450 WO2008149561A1 (fr) 2007-06-07 2008-06-06 Dispositif de cuisson
ES08764046.2T ES2557173T3 (es) 2007-06-07 2008-06-06 Cocina de calentamiento

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/000920 WO2009125453A1 (fr) 2008-04-09 2008-04-09 Dispositif de cuisson à chauffage par induction

Publications (1)

Publication Number Publication Date
WO2009125453A1 true WO2009125453A1 (fr) 2009-10-15

Family

ID=41161600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000920 Ceased WO2009125453A1 (fr) 2007-06-07 2008-04-09 Dispositif de cuisson à chauffage par induction

Country Status (1)

Country Link
WO (1) WO2009125453A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003208972A (ja) * 2002-01-16 2003-07-25 Matsushita Electric Ind Co Ltd 加熱調理器
JP2007107800A (ja) * 2005-10-13 2007-04-26 Matsushita Electric Ind Co Ltd 加熱調理器
WO2008013220A1 (fr) * 2006-07-27 2008-01-31 Panasonic Corporation Appareil de cuisson
JP2008091193A (ja) * 2006-10-02 2008-04-17 Matsushita Electric Ind Co Ltd 誘導加熱調理器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003208972A (ja) * 2002-01-16 2003-07-25 Matsushita Electric Ind Co Ltd 加熱調理器
JP2007107800A (ja) * 2005-10-13 2007-04-26 Matsushita Electric Ind Co Ltd 加熱調理器
WO2008013220A1 (fr) * 2006-07-27 2008-01-31 Panasonic Corporation Appareil de cuisson
JP2008091193A (ja) * 2006-10-02 2008-04-17 Matsushita Electric Ind Co Ltd 誘導加熱調理器

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