JP2007004989A - Induction heating device - Google Patents

Abstract

An induction heating device that reduces the possibility of erroneous operation due to misidentification and can be used more safely.
SOLUTION: The voice notification means 8 notifies the operation content by voice substantially simultaneously when the user operates the heating start means.
[Selection] Figure 1

Description

  The present invention relates to an induction heating device used in general homes, offices, restaurants, factories, and the like, and more particularly to an induction heating water heater, induction heating iron, or other induction heating device.

  Induction heating devices are becoming widespread as safe heating devices that do not use direct fire, and are recognized as safe heating devices for visually impaired persons. In order to improve convenience, various devices that generate sound in conjunction with the operation of switches have been proposed.

  Conventionally, as this type of induction heating apparatus, for example, an induction heating cooker includes a confirmation switch that operates a current operation state confirmation unit, and notifies the current operation state by sound generation unit by operating the confirmation switch (for example, , See Patent Document 1).

  4 and 5 show the induction heating cooker described in Patent Document 1. FIG.

  As shown in FIGS. 4 and 5, when the confirmation switch 26 is operated during the heating operation of the induction heating cooker, the current operation state confirmation means 24 is in any state with respect to the control circuit 22 of the induction heating device. Check if the heating operation is performed with.

  For example, when the control circuit 22 of the induction heating apparatus is controlled by a microcomputer, the microcomputer is instructed to output the current state of the heating operation, and the operation state is confirmed by the operation signal.

Then, the confirmed state is transmitted to the sound generating means 25, and the sound generating means 25 notifies the contents corresponding to the current state of the heating operation by sound. The audio content should be a concise representation of the current state of the heating operation being performed, for example, “A water heater is in operation.” It is.
Japanese Unexamined Patent Publication No. 7-73963

  For example, when the visually handicapped person operates the cooking device, an operation of pressing a switch of the heating start means occurs. Also in the prior art described above, in order to know the current operating state of the device, an operation on the operation unit is required.

  However, since it is difficult for a visually impaired person to visually recognize the role of this switch, an erroneous operation due to misidentification may occur. It is considered that the role of the switch is recognized after the switch is operated and the operation is started, which is an unsafe state.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a safer induction heating apparatus that can confirm the operation content after confirming the operation content.

  In order to solve the above-mentioned conventional problems, in the induction heating apparatus of the present invention, the voice notification means notifies the operation content by voice almost simultaneously when the user operates the heating start means.

  When the user operates the heating start means, the operation content is notified by voice, so that the possibility of erroneous operation due to misidentification is reduced.

  Therefore, the induction heating device can be used more safely.

  The induction heating device of the present invention can be used more stably by notifying the operation content by voice by means of voice notification means substantially simultaneously with the operation of the heating start means by the user.

  A first aspect of the invention is connected to a heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, control means that controls the operation of the inverter, and the control means. A heating start means for starting heating; and a voice notification means for generating sound connected to the heating start means, and the voice notification means notifies the operation content by voice substantially simultaneously with input to the heating start means. An induction heating device is provided.

  When the user operates the heating start means, the operation content is notified by voice almost simultaneously, thereby reducing the possibility of erroneous operation due to erroneous visual recognition. Therefore, it can suppress that the malfunction based on an erroneous operation arises.

  In a second aspect of the invention, particularly in the first aspect of the invention, the heating start means is an induction heating device that enables the operation after the same operation by the user continues for a predetermined period.

  When the user operates the heating start means, the operation contents are notified by voice almost simultaneously, but the operation contents are not validated. If the user recognizes the operation content by voice and validates the operation only after the same operation continues for a predetermined period, the possibility of erroneous operation can be further reduced.

  According to a third aspect of the present invention, there is provided a heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, control means that controls the operation of the inverter, and the control means. The human body detection means is provided, and the voice notification means is an induction heating device that notifies the operation state of the device when the human body detection means detects the human body.

  If the user approaches the induction heating device without knowing that it is being heated during cooking, there is a risk of touching the object to be heated that is being heated. According to the present invention, for example, when a non-contact type human body detection unit is provided, the voice notification unit notifies the operation state of the device when the user approaches the induction heating device, so that the occurrence of the malfunction is suppressed. be able to.

  Further, when the contact type human body detecting means is provided, the operation state of the device is notified by voice when a certain predetermined place is touched, and the same effect can be obtained.

  A fourth invention is a heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, control means that controls the operation of the inverter, and a control means that is connected to the control means Output detection means for detecting the magnitude of the output of the inverter is provided, and the control means, when it is determined that the object to be heated is inappropriate for induction heating based on the output signal from the output detection means, to the voice notification means via the operation means The signal is output, and the sound notification means is an induction heating device that notifies the induction heating inappropriateness of the object to be heated.

  According to the present invention, it is very easy to recognize compared with the display of the display unit (for example, liquid crystal) included in the operation unit and the display of the issuing unit (for example, light emitting diode) provided around the heating coil. is there.

  According to a fifth aspect of the present invention, there is provided a heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, control means that controls the operation of the inverter, and the control means. When the abnormality is detected based on the output signal from the abnormality detection means, the control means outputs a signal to the voice notification means via the operation means, and the voice notification means notifies the abnormality. This is an induction heating device.

  According to the present invention, for example, when the temperature rises excessively due to overheating of the object to be heated, and the abnormality detection means detects an excessive temperature rise, not only the display and the notification by the buzzer sound but also the abnormality in the sound. By notifying the contents, the user can respond quickly.

  In a sixth aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, the voice notification means is an induction heating device that sets / limits / stops the voice notification function by a predetermined operation of the operation means by the user. .

  According to the present invention, when the user does not need voice notification or only needs to notify a certain state, the user can perform a predetermined operation and set / limit / stop the voice notification function, which is more convenient for the user. High induction heating device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows an induction heating apparatus according to Embodiment 1 of the present invention, and is a schematic configuration diagram of a main part of an induction heating cooker.

  In FIG. 1, a high frequency magnetic field is generated below the top surface (not shown) of the induction heating device 2 in the induction heating device 2 that is operated by being supplied with power from a commercial power source 1 to heat the object 3 to be heated. A heating coil 4 is arranged.

  An inverter 5 that supplies high-frequency current is included by high-frequency switching of a switching element (not shown) that is connected to the heating coil 4 and included.

  Further, the inverter 5 is connected to control means 6 for controlling the operation of the inverter 5.

  An operation means 7 operated by a user is connected to the control means 6, and control of the operation of the inverter 5 is determined based on an operation signal from the operation means 7 and the state of the inverter 5.

  The operation means 7 is connected to a sound notification means 8 that generates sound.

  The voice notification means 8 is composed of a storage unit (not shown) composed of an IC or the like in which a voice signal is stored in advance, a speaker (not shown), and the like.

  Further, a non-contact type human body detecting means 9 for detecting a human body is disposed in the vicinity of the operating means 7 and is connected to output a detection signal to the operation unit 7 when a human body is detected.

  Between the inverter 5 and the commercial power source 1, an input current detection means 10 for detecting an input current is connected, and the detection signal is connected to be output to the control means 6.

  Further, a coil current detection means 11 is connected between the inverter 5 and the heating coil 4 so as to detect the heating coil 4 current, and similarly, a detection signal is connected to the control means 6.

  The input current detection means 10 and the coil current detection means 11 are output detection means for detecting the magnitude of the output of the inverter.

  In the central part of the heating coil 4, temperature detecting means 12 comprising a thermistor or the like is disposed so as to come into contact with the back side of the top surface (not shown) of the induction heating device 2, and indirectly controls the temperature of the object 3 to be heated. It is connected to detect and output a signal to the control means 6.

  The temperature detection means 12 is a means necessary for controlling the inverter 5 so as to bring the heated object 3 to a predetermined temperature in fried food cooking or the like, but in the present embodiment, the heated object 3 is overheated. It also serves as an abnormality detection means for detecting excessive temperature rise.

  FIG. 2 shows the appearance of the operating means 7 in Embodiment 1 of the present invention.

  The operation means 7 includes a display means 13 made of liquid crystal or the like, and displays the state of the induction heating device 2.

  Further, a heating start / stop key 14, a heating power up key 15, and a heating power down key 16 of the induction heating device 2 are arranged.

  About the induction heating apparatus 2 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the user places the object to be heated 3 on the top surface of the induction heating device 2 and presses the heating start / stop key 14 of the operation means 7. The operation means 7 including a microcomputer (not shown) recognizes the key operation and outputs a signal corresponding to the key pressed substantially simultaneously to the voice notification means 8.

  Based on the output signal, the voice notification means 8 reproduces a voice signal that is easy to recognize, such as “start heating” stored in an internal storage unit (not shown) in advance.

  That is, the voice notification means 8 notifies the operation content by voice almost simultaneously when the user operates the heating start means (heating start / stop key 14).

  The heating start / stop key 14 does not validate (not accept) the operation content substantially simultaneously with the key operation. This is to provide a time for recognizing the key operation performed by the user himself / herself by voice, and thus it is possible to suppress erroneous operation.

  The user recognizes the content of the key operation performed by voice notification, and if the content is good, continues the key operation for a predetermined period. That is, the key is kept depressed. The operation means 7 validates (accepts) the operation after the same key operation by the user continues for a predetermined period (about 3 seconds in the present embodiment).

  When the user's key operation is validated, the operation means 7 outputs a signal corresponding to the control means 6 almost simultaneously. The control means 6 controls the operation of the inverter 5 to start heating the article 3 to be heated based on the signal.

  Further, when the user recognizes that the key operation performed by himself / herself is an erroneous operation by voice notification, the operation means 7 does not validate the key operation if the key depression is stopped before the predetermined period elapses. In particular, the operation as the induction heating device 2 is not performed.

  FIG. 3 is a schematic flowchart showing the above series of controls.

  As described above, in the present embodiment, when the user operates the heating start unit, the operation content is notified by voice by the voice notification unit substantially simultaneously, so that it can be used more stably.

  Moreover, the human body detection means 9 provided in the induction heating device 2 of the present embodiment periodically performs human body detection, and the user is away from the induction heating device 2 while heating the article 3 to be heated. When approaching, the human body detection means 9 detects the movement of the human body, outputs a detection signal to the operation means 7, and the operation means 7 that has recognized the movement of the human body by the signal from the human body detection means 9 A signal may be output to The audio notification means 8 reproduces an audio signal such as “heating” and alerts the user. That is, the voice notification means 8 notifies the operation state of the device when the human body detection means 9 detects the human body.

  Further, for example, when the user performs a key operation to start heating without placing the object to be heated 3 on the top surface of the induction heating device 2, the control means 6 includes the input current detection means 10 and the coil current detection means. By comparing the detection signal from 11 with the threshold value stored in advance, it is possible to recognize that there is no object to be heated 3.

  The control means 6 outputs a signal to the operation means 7 that there is no object 3 to be heated, that is, induction heating is inappropriate. On the basis of the signal, the operation means 7 performs a blinking display indicating that the induction heating is inappropriate on the display means 13, and generates a sound such as “cannot be heated” from the sound notification means 8.

  As a result, the user can quickly recognize that the article to be heated 3 is in an induction heating inappropriate state.

  That is, the induction heating device 2 includes an input current detection means 10 and a coil current detection means 11 which are output detection means for detecting the magnitude of the output of the inverter 5, and the control means 6 is based on an output signal from the output detection means. When the object to be heated 3 is determined to be inappropriate for induction heating, a signal is output to the sound notification means 8 via the operation means 7, and the sound notification means 8 notifies the induction heating inappropriateness of the object to be heated 3.

  Further, based on the operation by the user, while the object to be heated 3 is continuously heated, if the object to be heated 3 becomes overheated due to evaporation or overheating of the contents of the object to be heated 3, Since the arranged temperature detection means 12 indirectly detects the temperature of the article 3 to be heated through the top surface of the induction heating device 2, a signal corresponding to the excessive temperature rise is output to the control means 6.

  The control means 6 that has recognized the excessive temperature rise of the article 3 to be heated quickly stops the operation of the inverter 5 and outputs a signal to the operation means 7. The operation means 7 performs a display corresponding to the display means 13 in order to call attention to the user and outputs a signal to the sound notification means 8 to reproduce a sound signal such as “please be careful about high temperatures”.

  That is, the induction heating device 2 includes a temperature detection unit 12 serving as an abnormality detection unit. When the control unit 6 recognizes the occurrence of an abnormality based on an output signal from the temperature detection unit 12, a sound is transmitted via the operation unit 7. A signal is output to the notification means 8, and the voice notification means 8 notifies the abnormality.

  In the case of the embodiment described above, the voice notification is activated many times by the movement of the human body, and the user may feel uncomfortable. In addition, there may be a case where the user desires to limit the voice notification function to a predetermined case.

  In that case, if a predetermined key operation of the operation means 7 is performed, for example, an operation such as pressing several keys at the same time when the power is turned on, the voice notification means 8 function setting mode is set. Limit / stop is possible. In the case of a user who does not need voice notification, the voice notification function can be stopped.

  Even when the volume is insufficient, the setting can be changed in the voice notification means 8 function setting mode, so that the volume can be increased or decreased.

  Further, for example, when the operation means 7, that is, the key is provided on the top surface of the induction heating device 2, the heated object 3 moves onto the key, and the state is the same as when the user operates the key. In some cases. In such a case, since the user does not recognize when the operation content becomes valid even if the key operation is performed for a predetermined period or more, a problem may occur.

  Therefore, when the same key operation continues for a predetermined period or longer (about 6 seconds in the present embodiment), the operation means 7 does not accept that the key operation is invalid, and displays that effect on the display means 13. The voice notification means 8 also performs voice notification such as “key operation error”.

  In the present embodiment, the human body detection means 9 is a non-contact type, but is not limited to this. For example, the potential of a metal part provided around the induction heating device 2 and the ground may be detected, and the human body may be detected by a change in potential caused by touching the human body. The same effect can be obtained by providing a dedicated key inside the operation means 7.

  As described above, in the induction heating apparatus according to the present invention, the voice notification unit notifies the operation content by voice substantially simultaneously with the operation of the heating start unit by the user, so that the user operates the heating start unit. Then, since the operation content is notified by voice, the possibility of erroneous operation due to misrecognition is reduced, and it is possible to use it more safely, so of course as an induction heating cooker, induction heating type water heater It is also useful as an induction heating iron or other induction heating heating device.

Main part block diagram of induction heating apparatus in Embodiment 1 of this invention External view of operation means 7 of the induction heating apparatus Schematic flowchart of control at the start of heating of the induction heating apparatus Block circuit diagram of a conventional induction heating device Front view of operation part in the same induction heating device

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Object to be heated 4 Heating coil 5 Inverter 6 Control means 7 Operation means 8 Voice notification means 9 Human body detection means 10 Input current detection means (inverter output detection means)
11 Coil current detection means (inverter output detection means)
12 Temperature detection means (abnormality detection means)

Claims (6)

A heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, control means that controls the operation of the inverter, and heating that is connected to the control means and starts heating An induction heating apparatus comprising start means and voice notification means connected to the heating start means for generating sound, wherein the voice notification means notifies the operation content by voice substantially simultaneously with input to the heating start means. The induction heating apparatus according to claim 1, wherein the operation is validated when continuously input to the heating start means for a predetermined period. A heating coil that generates a high-frequency magnetic field to heat an object to be heated, an inverter that supplies a high-frequency current to the heating coil, a control unit that controls the operation of the inverter, and a human body detection unit that is connected to the control unit The voice notification means is an induction heating device that notifies the operation state of the device when the human body detection means detects the human body. A heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, a control unit that controls the operation of the inverter, and a magnitude of an output of the inverter connected to the control unit Output detecting means for detecting the length, the control means outputs a signal to the voice notification means via the operating means when the object to be heated is determined to be inappropriate for induction heating based on the output signal from the output detecting means, The voice notification means is an induction heating device that notifies the induction heating inappropriateness of the object to be heated. A heating coil that generates a high-frequency magnetic field and heats an object to be heated, an inverter that supplies a high-frequency current to the heating coil, a control unit that controls the operation of the inverter, and an abnormality detection unit that is connected to the control unit When the control means recognizes the occurrence of an abnormality based on the output signal from the abnormality detection means, the control means outputs a signal to the voice notification means via the operation means, and the voice notification means notifies the abnormality. The induction heating apparatus according to any one of claims 1 to 5, wherein the sound notification means sets / limits / stops the sound notification function by a predetermined operation by a user.