JP2006294372A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker having a heating object communication means with which stable communication can be performed, even when the heating object communication means is placed near boundary of a communication area and automatic cooking can be continued. <P>SOLUTION: The heating cooker comprises a heating means 10 which heats a cooking vessel 1, a control means 9 which controls output of the heating means 10, a temperature detection means 2 disposed in the cooking vessel 1 which detects the temperature of the cooking vessel 1, the heating object communication means 3 installed on the cooking vessel 1 which transmits result detected with the temperature detection means 2 to the control means 9 via a heating cooker communication means 6, and the heating cooker communication means 6 installed on a main body of the heating cooker which communicates with the heating object communication means 3. The heating cooker communication means 6 is so constituted that the communication area can be varied. When the cooking vessel 1 is set, the communication area is narrowed in order to urge a user to set the cooking vessel 1 near the center of the maximum communication area. After that, the communication area is expanded in order to raise the capability of the heating object communication means staying in an area where continuing the communication is possible, even when the communication area is narrowed by environmental variation during the communication or a position of the heating object communication means is changed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cooking device that can perform automatic cooking using an object to be heated in which temperature detection means and communication means are arranged.

  Conventionally, in this type of heating cooker, the heated object in which the temperature detecting means and the communication means are arranged and the communication means installed in the heating cooker body communicate the temperature information of the heated object, and the temperature information is Some have been used for automatic cooking (see, for example, Patent Document 1).

  FIG. 5 is a configuration diagram of a conventional cooking device. In FIG. 5, a cooking container 101 that is an object to be heated includes a temperature detection unit 102 and an object to be heated communication unit 103, and the bottom surface of the cooking container 101 is a cooking container mounting unit 105 at the top of the heating cooker body 104. Is in contact with.

  There are a heating means 106 for heating the cooking container 101 and a heating cooker communication means 107 for communicating with the article-to-be-heated communication means 103 at the lower part of the cooking container mounting portion 105. While controlling the output, the temperature of the cooking vessel 101 can be obtained via the heated object communication means 103 and the heating cooker communication means 107.

  Thereby, the control means 108 can control the output of the heating means 106 based on the temperature of the cooking container 101, and can control the temperature of the cooking container 101.

  The cooker body 104 includes an operation display unit 109 that receives a user's operation and displays the current state of the cooker to the user, and a notification unit 110 that notifies the user of the content to be notified.

The control unit 108 includes a storage unit 111 that stores a cooking sequence and various threshold values, and can perform automatic cooking by executing the cooking sequence stored in the storage unit 111 based on the temperature of the cooking container 101.
Special table 2003-529184 gazette

  However, when the heated object communication means is placed in the vicinity of the boundary of the communication range, the communication range becomes narrow due to environmental fluctuations, for example, fluctuations in the ambient temperature of the circuit parts to be configured when automatic cooking is started. In addition, there is a problem that the communication distance is extended due to the user moving the heated object communication means, communication is interrupted, and automatic cooking cannot be continued.

  In order to solve the above-mentioned conventional problems, the cooking device of the present invention enables the cooking device communication means to change the communication range, and narrows the communication range when installing an object to be heated, so that the middle of the maximum communication range. It is possible to provide a heating cooker that can continue automatic cooking without interruption of communication by encouraging installation and maximizing the communication range after the start of automatic cooking.

  The heating cooker of the present invention enables communication by changing the environment by encouraging the heating cooker communication means to change the communication range so that the object to be heated is installed in the middle of the communication range. It is possible to provide a heating cooker that solves the problem that communication is interrupted due to the narrowing of the range or movement of the heated object communication means, and automatic cooking cannot be continued.

  The first invention is a heating means for heating an object to be heated, a control means for controlling the output of the heating means, a temperature detection means for detecting a temperature disposed on the object to be heated, and detection by the temperature detection means. Heated object communication means installed on the heated object that communicates with the control means via a heating cooker communication means that is an electromagnetic induction communication means, and a heating cooker that communicates with the heated object communication means The heating cooker communication means installed in the main body, the heating cooker communication means includes an antenna that generates an electromagnetic field, and the heating cooker communication means can change a communication range by changing the electromagnetic field. By configuring it, the communication range is narrowed when installing the object to be heated, the installation is promoted from the middle of the maximum communication range, and then the communication range is expanded to continue the communication range due to environmental fluctuations etc. Or narrowed, it is possible to increase the possibility to fit a range that can continue communication even if the position of the object to be heated communication means is changed.

  In the second invention, in particular, the heating cooker communication means of the first invention is configured to change the communication range by changing the power supplied to the antenna, thereby changing the power supplied to the antenna. For this purpose, an amplifier can be used so that it can be adjusted in multiple stages. This reduces the power supplied when installing the object to be heated, narrows the communication range, encourages installation from the middle of the maximum communication range, then increases the supplied power, and continues communication by expanding the communication range. In the meantime, it is possible to increase the possibility that the communication range becomes narrower due to environmental fluctuations or the like, or the communication range can be continued even when the position of the heated object communication means changes.

  According to the third invention, in particular, the cooking device communication means of the first invention includes a plurality of antennas having different areas surrounded by a track, and is configured to change the communication range by switching the antennas. When installing an object to be heated, use an antenna with a small area to narrow the communication range, encourage installation from the middle of the maximum communication range, and then expand the communication range by using an antenna with a large area. When the communication range is narrowed due to environmental fluctuations or the position of the heated object communication means is changed, the possibility that the communication can be continued can be increased.

  According to a fourth aspect of the invention, in particular, the heating cooker communication means of the first aspect of the invention comprises a plurality of antennas having different winding numbers, and is configured to change the communication range by switching the antennas. When installing an object, use an antenna with a small number of windings to narrow the communication range and promote installation from the middle of the maximum communication range, and then expand the communication range by using an antenna with a large number of windings. It is possible to increase the possibility that the communication range can be continued even when the communication range is narrowed due to environmental fluctuations or the position of the heated object communication means is changed while the communication is continued.

  5th invention is equipped with the communication possible discrimination means which judges whether to-be-heated object communication means can communicate with the heating-cooker communication means of any one invention of 1st-4th invention especially, The said to-be-heated object When the communication means is within the first communication range, the communication range is changed to the second communication range. When the heated object communication means is out of the second communication range, the communication range is changed to the first communication range. If the heated object communication means once deviates from the communication range, the communication range is changed to the first communication range which is narrow, and the first communication is urged to be installed from the middle of the maximum communication range. If heated object communication means is installed within the range, change to the second communication range to change the communication range due to environmental changes and the position of the heated object communication means to some extent. Can continue communication Can increase the likelihood that fit into, can communicate with the influence of noise, impossible can be prevented from being placed in a boundary as occurs alternately.

  6th invention selects the said minimum communication range among the several communication range which can select especially the heating-cooker communication means of any one invention of 1st-5th before an automatic cooking start, It is assumed that the maximum communication range is selected from a plurality of communication ranges that can be selected after the start of automatic cooking, so that when the user installs an object to be heated before automatic cooking, the maximum communication range is set. It can be urged to install from the middle, and the communication range is maximized after the start of automatic cooking to continue communication. However, it is possible to increase the possibility that the communication can be continued within the range in which communication can be continued, and it is possible to prevent the communication from being performed due to the influence of noise and being prevented from being placed at a boundary where the impossible is alternately generated.

  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 is a configuration diagram of a cooking device according to Embodiment 1 of the present invention. In this embodiment, the cooking device is described as an induction cooking device. In the present embodiment, the cooking device is described as an induction cooking device, but a cooking device using gas or a halogen heater may be used.

  In FIG. 1, a cooking container 1 that is a first object to be heated includes a temperature detecting means 2 and a to-be-heated object communication means 3, and the temperature detecting means 2 is installed inside the bottom plate of the cooking container 1. From the inside of the bottom plate of the cooking vessel 1 to the heated object communication means 3 installed in the handle 5. The heating cooker communication means 6 for communicating with the article to be heated communication means 3 is installed above the heating cooker main body 7 and below the cooking container placing portion 8.

  In addition, in this Embodiment, although the temperature detection means 2 is installed in the inside of the bottom plate of the cooking container 1, if the temperature of the cooking container 1 can be detected, it will not be restricted to this. Moreover, although the to-be-heated object communication means 3 is installed in the handle 5, you may prepare a new component for the to-be-heated object communication means 3, and may attach to the cooking vessel 1. FIG.

  In this embodiment, the temperature detection means 2 is constituted by an RTD sensor, the heated object communication means 3 is constituted by an electromagnetic induction type RFID tag, and the heating cooker communication means 6 is constituted by an RFID antenna 6a and an RFID reader circuit 6b. To do. When the RFID antenna 6a outputs an electromagnetic wave, it is converted into electric energy by the RFID tag and the IC on the RFID tag operates. The RFID tag reads the value of the RTD sensor and transmits temperature data. The control unit 9 can read the temperature data by controlling the RFID reader circuit 6b.

  In this embodiment, the temperature detection means 2 is described as being configured using an RTD sensor, but may be configured using other temperature detection sensors such as a thermistor.

  A heating means 10 for heating the cooking container 1 is disposed below the cooking container mounting portion 8. In the present embodiment, a heating coil is used for the heating means 10 and a high-frequency current generating circuit is used for the heating control means 11. The heating control means 11 is controlled by the control means 9.

  The control means 9 in the present embodiment is realized using a microcomputer. The control means 9 includes a storage means 12 for storing a cooking sequence for performing automatic cooking and a time measuring means 13 for measuring time.

  The operation display means 14 comprises a switch for operating the cooking device and an LCD or LED for displaying the state of the cooking device. The notification means 15 is for notifying the user of the state of the heating cooker, and is constituted by a buzzer. In this embodiment, the notification unit 15 is described as a buzzer. However, the notification unit 15 may be configured by a speaker, an amplifier, and voice information that can report voice and the like.

  Next, the heating cooker communication means 6 will be described in detail with reference to FIG. FIG. 2 is a block diagram of the heating cooker communication means 6 in the present embodiment. The transmitter 6ba generates a carrier frequency of 13.56 MHz and sends it to the modulator 6bb. The transmission signal from the communication means control means 6bg and the carrier wave are ASK modulated by the modulator 6bb. The signal modulated by the modulator 6bb is pulled up to a required height by the power output module 6bc and sent to the RFID antenna 6a. The output of the power output module 6bc can be changed by a signal from the communication means control means 6bg.

  The reply signal from the object communication means 3 to be heated is cut off an unnecessary signal by the band filter 6bd, sent to the amplifier 6be to be an appropriate size signal, converted to TTL data by the demodulator 6bf, and sent to the communication means control means 6bg. It is done. The communication means control means 6bg is provided with a communication enablement determination means that determines that communication is possible if there is a reply from the heated object communication means with respect to the transmission signal, and determines that communication is impossible if there is no reply.

  In order to determine whether the article to be heated communication means 3 is within the communication range, the communication enablement determination means may determine whether it is possible to communicate continuously for a predetermined number of times.

  The cooking device communication means 6 performs communication every first predetermined time and acquires temperature data of the object to be heated. In the present embodiment, the first predetermined time is 1 second. In the present embodiment, the first predetermined time is 1 second. However, the first predetermined time is not limited to 1 second as long as it does not cause a problem in automatic cooking. The cooking device communication means 6 can send not only the temperature data with the heated object communication means 3 but also information specific to the heated object to the control means 9 by communication.

  Next, the operation display means 14 will be described in detail with reference to FIG. Components having the same configuration as in FIG.

  Fig.3 (a) is a perspective view of the heating cooker in this Embodiment. FIG. 3B is a configuration diagram of the operation display unit 14.

  The display means 14a is composed of an LCD and displays the setting of the heating means 10. The operation means 14b is an on / off switch, and can turn on / off the output of the heating means 10.

  The cooking device communication means 6 can communicate and read the contents of the recipe card with the RFID tag. When the automatic switch 14c is pressed, the heating cooker communication means 6 enters the reading mode and turns on the output to read the recipe card. At this time, the heating cooker communication means 6 controls the power output module 6bc so as to be in the first communication range.

  In this embodiment, the output is turned on until 10 seconds have elapsed since the recipe card was read or the automatic switch was pressed. If the recipe card is not read by the heating cooker communication means 6 even after 10 seconds, the output is turned off.

  When the automatic switch 14c is pressed and the recipe card is read, the control means 9 stores the cooking sequence in the read recipe card in the storage means 12, and the number of the recipe card read to the right of “Auto” on the display means 14a. Is displayed.

  The communication status LED 14d for displaying whether the article-to-be-heated communication means 3 is within the communication range displays green when the article-to-be-heated communication means 3 is within the communication range, and displays red when it is not within the communication range. In the present embodiment, green and red are displayed. However, the present invention is not limited to this as long as the heated object communication means 3 can be expressed as being within the communication range.

  When the heated object is installed in the heating means 10 and the heated object communication means 3 is installed in the first communication range, the communication status LED 14d is lit in green.

  When the heated object communication means 3 is within the first communication range, automatic cooking can be started by the on / off switch 14e. When the on / off switch 14e is pressed and automatic cooking starts, the heating cooker communication means 6 controls the power output module 6bc so as to be in the second communication range. During automatic cooking, temperature data is communicated every first predetermined time, and the control means 9 sends a control signal to the heating control means 11 based on the cooking sequence stored in the storage means 12 to control the heating means 10.

  When the heated object communication means 3 is out of the second communication range during automatic cooking, the communication state LED 14d is lit red, and the display means 14a displays "Error 1" indicating that it is out of the communication range, and is notified. The means 15 is repeated for 0.5 seconds ON / 0.5 seconds OFF while it is out of the communication range, and since the heated object communication means 3 is not installed in the communication range for the user, the automatic cooking is temporarily stopped. The cooking device communication means 6 controls the power output module 6bc so as to be in the first communication range.

  In this embodiment, “error 1” is displayed to inform the user that the heated object communication means 3 is not installed within the communication range, and the notification means 15 is turned ON / OFF for 0.5 seconds. Although it is assumed that the OFF is repeated for 5 seconds, it is not limited to this if the above contents are transmitted.

  When out of the communication range during automatic cooking, the control means 9 turns off the heating means 10 based on the cooking sequence, or controls the heating means 10 so as to keep the bottom temperature of the object to be heated at a constant temperature. . In addition, when it is out of the communication range for the second predetermined time based on the cooking sequence, “error 2” indicating that automatic cooking cannot be continued is displayed on the display unit 14a, and the notification unit 15 is turned on / off for 0.5 seconds. Repeat 0.5 second OFF every 3 seconds to stop heating. The “error 2” display continues until the next key is operated.

  In this embodiment, “error 2” is displayed to inform the user that automatic cooking cannot be continued, and the notification means 15 is turned on for 0.5 seconds ON / 0.5 seconds OFF three times every second. If it repeats, but the above-mentioned contents are transmitted, it is not restricted to this.

  The communication status LED 14d lights up in green when the heated object communication means 3 is installed within the second predetermined time so that the heated object communication means 3 is placed in the first communication range during the automatic cooking. "1" and the notification means 15 are turned off, and automatic cooking is continued. At that time, the heating cooker communication means 6 controls the power output module 6bc so as to be in the second communication range.

  In this embodiment, the cooking device communication means 6 can change the communication range even after the start of automatic cooking. However, the communication range may not be changed after the automatic cooking start according to the cooking sequence.

  In this way, by configuring the heating cooker, when installing the heated object communication means 3, the communication range is narrowed to facilitate installation from the middle of the maximum communication range, and then the communication range is expanded to continue communication. It is possible to provide a heating cooker that can increase the possibility that communication range will be reduced even when the communication range becomes narrow due to environmental fluctuations or the position of the heated object communication means changes while the communication range can be continued. it can.

(Embodiment 2)
Hereinafter, the second embodiment will be described. Since the basic configuration of the present embodiment is the same as that of the first embodiment, different points will be mainly described. Further, the same functions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  Next, the cooking device communication means 6 will be described with reference to FIG. 4A is a configuration diagram of the heating cooker communication means 6 in the present embodiment, and FIG. 4B is a configuration diagram of the antenna 6a in the present embodiment. The transmitter 6ba generates a carrier frequency of 13.56 MHz and sends it to the modulator 6bb. The transmission signal from the communication means control means 6bg and the carrier wave are ASK modulated by the modulator 6bb. The signal modulated by the modulator 6bb is pulled up to a required height by the power output module 6bc and sent to the antenna 6a or the antenna 6ab via the antenna selection switch 6bh. The antenna that sends the output can be changed by operating the antenna selection switch 6bh according to the signal from the communication means control means 6bg.

  The reply signal from the object communication means 3 to be heated is cut off an unnecessary signal by the band filter 6bd, sent to the amplifier 6be to be an appropriate size signal, converted to TTL data by the demodulator 6bf, and sent to the communication means control means 6bg. It is done. The communication means control means 6bg is provided with a communication enablement determination means that determines that communication is possible if there is a reply from the heated object communication means with respect to the transmission signal, and determines that communication is impossible if there is no reply.

  In the present embodiment, the antenna 6a is described as an antenna having a different area, but the same effect can be obtained even if the antenna 6a is configured using antennas having different numbers of firewood.

  In this way, by configuring the heating cooker, when installing the heated object communication means 3, the communication range is narrowed to facilitate installation from the middle of the maximum communication range, and then the communication range is expanded to continue communication. It is possible to provide a heating cooker that can increase the possibility that communication range will be reduced even when the communication range becomes narrow due to environmental fluctuations or the position of the heated object communication means changes while the communication range can be continued. it can.

  As described above, the heating cooker according to the present invention can continue automatic cooking even if the heated object communication means moves a little during automatic cooking. It is also useful as an application.

The block diagram of the heating cooker in Embodiment 1 of this invention The block diagram of the heating cooker communication means in Embodiment 1 of this invention The block diagram of the heating cooker and operation display part in Embodiment 1 of this invention The block diagram of the heating cooker communication means in Embodiment 2 of this invention Configuration diagram of a conventional cooking device

Explanation of symbols

1 Cooking container (first heated object)
2 Temperature detection means 3 Heated object communication means 6 Heating cooker communication means 6a RFID antenna (antenna)
6aa, 6ab antenna 6bg communication means control means (communication enable discrimination means)
9 Control means 10 Heating means

Claims (6)

Heating means for heating the object to be heated, control means for controlling the output of the heating means, temperature detecting means for detecting the temperature disposed on the object to be heated, and electromagnetic induction communication of the detection result of the temperature detecting means The heated object communication means installed in the heated object communicating with the control means via the heated cooker communication means, and the heated cooker body communicated with the heated object communication means A cooking device that includes a cooking device communication means and an antenna that generates an electromagnetic field, and the cooking device communication device can change a communication range by changing the electromagnetic field. The cooking device according to claim 1, wherein the cooking device communication means changes the communication range by changing the power supplied to the antenna. The heating cooker according to claim 1, wherein the heating cooker communication means includes a plurality of antennas having different areas surrounded by tracks, and changes a communication range by switching the antennas. The cooking device according to claim 1, wherein the cooking device communication means includes a plurality of antennas having different winding numbers, and changes a communication range by switching the antennas. The cooking device communication means includes communication enablement determination means for determining whether the heated object communication means can communicate, and when the heated object communication means is within the first communication range, the communication range is set to the first communication. The communication range is changed to the first communication range when the heated object communication means is out of the second communication range by changing to a second communication range wider than the range. The cooking device described. The cooking device communication means selects the minimum communication range among a plurality of communication ranges that can be selected before the start of automatic cooking, and the maximum communication range among the plurality of communication ranges that can be selected after the start of automatic cooking. The cooking device according to any one of claims 1 to 5, wherein the cooking device is selected.