JP2007053038A - Induction cooking device - Google Patents

Abstract

An object of the present invention is to provide an induction heating cooking apparatus capable of detecting the temperature of a container with high accuracy at high speed.
A container 10 for containing a cooking product has a temperature detection means 12 and a container-side temperature control means 13 that is connected to the temperature detection means 12 and transmits / receives a signal or power, and the induction heating cooker 20 includes: Equipment-side temperature control means 21 that transmits and receives signals or power to and from the container-side temperature control means 13, a heating coil 22 that induction-heats the container 10, high-frequency current generation means 23 that applies a high-frequency current to the heating coil 22, and equipment And a control means 24 for inputting a signal of the side temperature control means 21 and outputting a drive signal to the high frequency current generation means 23, and the container side temperature control means 13 and the apparatus side temperature control means 21 are configured to face each other wirelessly. . Thereby, since the temperature of the container 10 can be directly detected by the temperature detection means 12, the temperature of the container 10 can be detected at high speed with high accuracy.
[Selection] Figure 1

Description

  The present invention relates to an induction heating cooking apparatus that transmits a temperature signal detected by a temperature detection element attached to a container to an induction heating cooker and performs temperature control using the temperature signal.

Conventionally, this type of induction heating cooking apparatus performs temperature control based on temperature data of an infrared sensor that is placed on the lower surface of the top plate and detects infrared rays emitted from the bottom surface of the container (see, for example, Patent Document 1). ).
JP 2003-249341 A

  However, the above-described conventional configuration has a problem that it is necessary to use a top plate having a characteristic that allows infrared light having a wavelength received by the infrared sensor to pass, and radiation is caused by the material and surface treatment of the container bottom. There was also a problem that the absolute temperature could not be detected because the rate changed.

  This invention solves the said conventional subject, and it aims at providing the induction heating cooking apparatus which can detect the temperature of a container with high precision at high speed.

  In order to solve the above-described conventional problems, an induction heating cooking apparatus according to the present invention is configured such that a container in which a food is put is connected to a temperature detection means for detecting the temperature of the container, and the temperature detection means to transmit / receive a signal or power. A container-side temperature control means, and the induction heating cooker includes a device-side temperature control means for transmitting / receiving signals or power to / from the container-side temperature control means, a heating coil for induction-heating the container, and a high-frequency current in the heating coil. A high-frequency current generating means for applying a signal, and a control means for inputting a signal of the device-side temperature control means and outputting a drive signal to the high-frequency current generating means, the container-side temperature control means and the device-side temperature control means It is configured to face the wireless.

  As a result, the temperature of the container can be directly detected by the temperature detection means, so that the temperature of the container is highly accurate without being affected by the material of the top plate, the material and surface condition of the bottom surface of the container, and the warping of the container bottom. Can be detected at high speed.

  The induction cooking device of the present invention can directly detect the temperature of the container with the temperature detecting means, and can detect the temperature of the container with high accuracy and at high speed.

  1st invention is equipped with the container which puts a foodstuff, and the induction heating cooking appliance which heats the said container, The said container is connected with the temperature detection means which detects the temperature of a container, and the said temperature detection means, a signal or A container-side temperature control means for transmitting and receiving electric power, and the induction heating cooker is an apparatus-side temperature control means for transmitting and receiving a signal or power with the container-side temperature control means, and heating for induction heating the container A coil, high-frequency current generating means for applying a high-frequency current to the heating coil, and control means for inputting a signal of the device-side temperature control means and outputting a drive signal to the high-frequency current generating means, Since the temperature control means and the apparatus-side temperature control means are configured to be an induction heating cooking device configured to face wirelessly, the temperature of the container can be detected directly by the temperature detection means, so that the top plate Material, material and surface condition of the bottom surface of the container, without being affected by the warp of the bottom, in which can be the temperature of the container is detected at high speed with high accuracy. In addition, the fact that the container-side control means and the equipment-side control means are wireless can prevent water from entering the induction heating cooker.

  According to a second invention, in particular, in the first invention, the container side temperature control means is constituted by a container side antenna and a container side control circuit, and the equipment side temperature control means is constituted by an equipment side antenna and a reader. And device communication and wireless.

  In a third aspect of the invention, in particular, in the first aspect of the invention, the container side temperature control means is constituted by a power receiving means and a container side signal transmitting means, and the equipment side temperature control means is constituted by a power transmitting means and a equipment side signal receiving means. As a result, similar to the second invention, communication between the container and the device and wireless connection are realized.

  According to a fourth aspect of the invention, in particular, in the third aspect of the invention, the power receiving means is composed of an ultrasonic receiving element and a power supply circuit, and the power transmitting means is composed of an ultrasonic transmitting element and an ultrasonic generating means. The power source power of the signal transmitting means is transmitted to the device side signal receiving means.

  According to a fifth aspect of the invention, in particular, in the third aspect of the invention, the power receiving means is composed of a container side coil and a power supply circuit, and the power transmitting means is composed of a device side coil and a high frequency generating means. Is transmitted to the device-side signal receiving means.

  In the sixth aspect of the invention, in particular, in the third aspect of the invention, the container side signal transmitting means is constituted by a light emitting element control circuit and a light emitting element, and the equipment side signal receiving means is constituted by a light receiving element control circuit and a light receiving element. The temperature signal is communicated.

  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 cooking apparatus according to Embodiment 1 of the present invention.

  As shown in the figure, a hole 11 is formed in the bottom surface of the container 10 into which food is put from the side surface to the center, and a temperature detecting means 12 for detecting the temperature is attached to the center of the bottom surface of the container 10 through the hole 11. Yes. In the present embodiment, a platinum sensor that can withstand high temperatures is used as the temperature detection means 12. And the said temperature detection means 12 is connected with the container side temperature control means 13, and transmits / receives a signal or electric power. The container 10 is provided with a container handle 14 for the user to hold.

  The induction heating cooker 20 that heats the container 10 includes a device-side temperature control means 21 that transmits and receives signals or power to and from the container-side temperature control means 13, a heating coil 22 that induction-heats the container 10, and the heating coil 22. A high frequency current generating means 23 for applying a high frequency current to the device, a control means 24 for inputting a signal from the device side temperature control means 21 and outputting a drive signal to the high frequency current generating means, and a top plate on which the container 10 is placed. 25.

  And the said container side temperature control means 13 and the said apparatus side temperature control means 21 are comprised facing wirelessly.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  First, the container 10 is placed on the top plate 25, and the container side temperature control means 13 and the device side temperature control means 21 are connected. The container-side temperature control means 13 and the device-side temperature control means 21 are electrically connected wirelessly and mechanically coupled so as not to be easily disconnected. And the setting temperature of the said induction heating cooking appliance 20 is set to 180 degreeC, for example, and cooking is started. The high-frequency current generating means 23 applies a high-frequency current to the heating coil 22, an eddy current is generated on the bottom surface of the container 10 by the alternating magnetic flux radiated from the heating coil 22, and the bottom surface of the container 10 is heated. . When the container 10 is heated, the temperature of the temperature detecting means 12 attached to the bottom surface of the container 10 increases. As a result, the resistance value of the temperature detection means 12 changes, and the change in the resistance value is transmitted to the device side temperature control means 21 through the container side temperature control means 13, and the device side temperature detection means 21 detects the temperature. The temperature information obtained by the resistance value change of the means 12 is sent to the control means 24. The control means 24 compares the set temperature (for example, 180 ° C.) with the temperature information, controls the high frequency output to the heating coil 22 of the high frequency current generating means 23, and keeps the temperature of the container 10 at 180 ° C.

  As described above, according to the present embodiment, the temperature of the bottom of the container 10 is directly detected by the temperature detecting means 12 attached to the container 10, so that the temperature of the container 10 can be detected with high accuracy and at high speed. At the same time, since the bottom of the container 10 is directly heated by induction heating, it is possible to control the temperature with high accuracy and good response.

  Moreover, since the temperature information of the container 10 is wirelessly sent to the induction heating cooker 20, there is no problem that water enters the induction heating cooker 20.

(Embodiment 2)
Next, FIG. 2 shows an induction heating cooking apparatus according to Embodiment 2 of the present invention. The same elements as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences will be mainly described.

  In the present embodiment, the container side temperature control means 13 is constituted by a container side antenna 13a and a container side control circuit 13b, and the equipment side temperature control means 21 is constituted by an equipment side antenna 21a and a reader 21b. Other configurations are the same as those of the first embodiment.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  First, the container 10 is placed on the top plate 25 and the container side temperature control means 13 and the device side temperature control means 21 are connected. The electrical connection between the container-side temperature control means 13 and the equipment-side temperature control means 21 is performed wirelessly and is mechanically coupled so as not to be easily disconnected. And the setting temperature of the induction heating cooking appliance 20 is set to 180 degreeC, for example, and cooking is started. The high frequency current generating means 23 applies a high frequency current to the heating coil 22, an eddy current is generated on the bottom surface of the container 10 by the alternating magnetic flux radiated from the heating coil 22, and the bottom surface of the container 10 is heated. On the other hand, the device-side antenna 21a transmits a high frequency (here, 13.56 MHz) by the reader 21b, and the container-side antenna 13a receives this high frequency, and the container-side control circuit 13b rectifies and smoothes the high-frequency and uses it as a power source. To do.

  When the container 10 is heated, the temperature of the temperature detecting means 12 attached to the container 10 increases. As a result, the resistance value of the temperature detecting means 12 changes, and the change in the resistance value is AD-converted and modulated by the container-side temperature control means 13 and is output from the container-side antenna 13a. On the other hand, the device-side antenna 21a of the device-side temperature control means 21 receives the output from the container-side antenna 13a, the signal is transmitted to the reader 21b, and the reader 21b demodulates the signal and sends it to the control means 24. The control means 24 converts the signal into temperature information, compares the set temperature (for example, 180 ° C.) with the temperature information, controls the high frequency output to the heating coil 22 of the high frequency current generating means 23, and controls the container 10. Is maintained at 180 ° C.

  As described above, according to the present embodiment, the temperature of the bottom of the container 10 is directly detected by the temperature detecting means 12, and the signal is sent to the induction heating cooker 20 by the induction communication method, and based on the information. Since the heating of the bottom of the container 10 is directly controlled by induction heating, temperature control with high accuracy and good responsiveness can be performed.

(Embodiment 3)
Next, FIG. 3 shows the induction heating cooking apparatus in Embodiment 3 of this invention. The same elements as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences will be mainly described.

  In the present embodiment, the container side temperature control means 13 is composed of a power receiving means 13c and a container side signal transmitting means 13d, and the device side temperature control means 21 is composed of a power transmitting means 21c and a device side signal receiving means 21d. ing. Other configurations are the same as those of the first embodiment.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  First, the container 10 is placed on the top plate 25 and the container side temperature control means 13 and the equipment side temperature control means 21 are connected. The electrical connection between the container-side temperature control means 13 and the equipment-side temperature control means 21 is performed wirelessly and is mechanically coupled so as not to be easily disconnected. And the setting temperature of the induction heating cooking appliance 20 is set to 180 degreeC, for example, and cooking is started. The high frequency current generating means 23 applies a high frequency current to the heating coil 22, an eddy current is generated on the bottom surface of the container 10 by the alternating magnetic flux radiated from the heating coil 22, and the bottom surface of the container 10 is heated. When the container 10 is heated, the temperature of the temperature detecting means 12 attached to the container 10 increases. As a result, the resistance value of the temperature detecting means 12 changes, and the change in the resistance value is transmitted to the equipment side signal receiving means 21d of the equipment side temperature control means 21 by the container side signal transmitting means 13d, and the equipment side signal receiving means. 21 d is sent to the control means 24. The control means 24 compares the temperature information with a set temperature (for example, 180 ° C.), controls the high frequency output to the heating coil 22 of the high frequency current generating means 23, and keeps the temperature of the container 10 at 180 ° C.

  In addition, electric power is transmitted from the power transmission means 21c to the power reception means 13c, and it becomes a power source of the container side signal transmission means 13d.

  As described above, according to the present embodiment, the temperature of the bottom of the container 10 is directly detected by the temperature detection means 12, and the signal is wirelessly sent to the induction heating cooker 20, and induction heating is performed based on the information. Since the bottom of the container 10 is directly heated and controlled, temperature control with high accuracy and responsiveness can be performed.

(Embodiment 4)
Next, FIG. 4 shows a specific example of power receiving means and power transmitting means of the induction heating cooking apparatus in Embodiment 4 of the present invention. The same elements as those in the first and third embodiments are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.

  In the present embodiment, the power receiving unit 13c in the third embodiment is configured by an ultrasonic receiving element 13c1, and a power supply circuit including a diode 13c2 and a capacitor 13c3, and the power transmitting unit 21c is an ultrasonic transmitting unit. It is comprised by the element 21c1 and the ultrasonic wave generation means 21c2. Other configurations are the same as those of the third embodiment.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  The ultrasonic wave generated by the ultrasonic wave generating means 21c2 is transmitted by the ultrasonic wave transmitting element 21c1, and the ultrasonic wave is received by the ultrasonic wave receiving element 13c1 and converted into direct current by the power supply circuit composed of the diode 13c2 and the capacitor 13c3. It becomes a power source for the container side signal transmitting means 13d. Others are the same as in the third embodiment.

  As described above, according to the present embodiment, the power of the container-side signal transmitting unit 13d is transmitted to the device-side signal receiving unit 21d using ultrasonic waves.

(Embodiment 5)
Next, FIG. 5 shows a specific example of power receiving means and power transmitting means of the induction heating cooking apparatus in Embodiment 5 of the present invention. The same elements as those in the first and third embodiments are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.

  In the present embodiment, the power receiving means 13c in the third embodiment is constituted by a container side coil 13c4 and a power supply circuit constituted by a diode 13c2 and a capacitor 13c3, and the power transmission means 21c is a device side coil 21c3. And the high frequency generating means 21c4. Other configurations are the same as those of the third embodiment.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  The high frequency generated by the high frequency generation means 21c4 is transmitted by the coil 21c3, the high frequency is received by the container side coil 13c4, converted into direct current by the power supply circuit composed of the diode 13c2 and the capacitor 13c3, and the container side signal transmission means 13d. Power. Others are the same as in the third embodiment.

  As described above, according to the present embodiment, the power of the container-side signal transmitting unit 13d is transmitted to the device-side signal receiving unit 21d using high frequency.

(Embodiment 6)
Next, FIG. 6 shows a specific example of the container side signal transmitting means and the equipment side signal receiving means of the induction heating cooking apparatus according to Embodiment 6 of the present invention. The same elements as those in the first and third embodiments are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.

  In the present embodiment, the container-side signal transmitting means 13d in the third embodiment is composed of a light-emitting element control circuit 13d1 and a light-emitting element 13d2, and the apparatus-side signal receiving means 21d is a light-receiving element control circuit 21d1 and a light-receiving element 21d2. It is constituted by. Other configurations are the same as those of the third embodiment.

  About the induction heating cooking apparatus comprised as mentioned above, the operation | movement is demonstrated below.

  The light emitting element 13d2 outputs a modulation signal corresponding to the temperature signal by the light emitting element control circuit 13d1, the light receiving element 21d2 receives and sends it to the light receiving element control circuit 21d1, and the light receiving element control circuit 21d1 demodulates the signal to detect the temperature. Retrieve information. Others are the same as in the third embodiment.

  As described above, according to the present embodiment, temperature signals are communicated using the light emitting element and the light receiving element.

  As described above, the induction heating cooking apparatus according to the present invention can detect the temperature of the container directly by the temperature detection means, and can detect the temperature of the container with high accuracy and at high speed, so that it can be used not only for home use. It is also useful as an induction heating cooking device for business use.

The block diagram of the induction heating cooking apparatus in Embodiment 1 of this invention The block diagram of the induction heating cooking apparatus in Embodiment 2 of this invention The block diagram of the induction heating cooking apparatus in Embodiment 3 of this invention Configuration diagram showing specific examples of power receiving means and power transmitting means in the apparatus Configuration diagram showing another specific example of power receiving means and power transmitting means in the same device Configuration diagram of container side signal transmitting means and device side signal receiving means in the same apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container 12 Temperature detection means 13 Container side temperature control means 13a Container side antenna 13b Container side control circuit 13c Electric power reception means 13d Container side signal transmission means 13c1 Ultrasonic receiving element 13c4 Container side coil 13d1 Light emitting element control circuit 13d2 Light emitting element 20 Induction Cooking device 21 Equipment side temperature control means 21a Equipment side antenna 21b Reader 21c Power transmission means 21d Equipment side signal reception means 21c1 Ultrasonic transmission element 21c2 Ultrasonic generation means 21c3 Equipment side coil 21c4 High frequency generation means 21d1 Light receiving element control circuit 21d2 Light reception Element 22 Heating coil 23 High frequency current generating means 24 Control means 25 Top plate

Claims (6)

A container for containing a food item and an induction heating cooker for heating the container, the container being connected to the temperature detecting means for detecting the temperature of the container, and a container for transmitting and receiving signals or electric power. A side temperature control means, and the induction heating cooker is a device side temperature control means for transmitting / receiving a signal or power to / from the container side temperature control means, a heating coil for induction heating the container, and the heating coil A high-frequency current generating means for applying a high-frequency current to the apparatus, and a control means for inputting a signal from the device-side temperature control means and outputting a drive signal to the high-frequency current generating means, the container-side temperature control means and the device An induction heating cooking device in which the side temperature control means is configured to face wirelessly. The induction heating cooking apparatus according to claim 1, wherein the container side temperature control means includes a container side antenna and a container side control circuit, and the apparatus side temperature control means includes an apparatus side antenna and a reader. The induction heating cooking apparatus according to claim 1, wherein the container side temperature control means is constituted by power reception means and container side signal transmission means, and the equipment side temperature control means is constituted by power transmission means and equipment side signal reception means. The induction heating cooking apparatus according to claim 3, wherein the power receiving means is constituted by an ultrasonic receiving element and a power supply circuit, and the power transmitting means is constituted by an ultrasonic transmitting element and an ultrasonic wave generating means. The induction heating cooking apparatus according to claim 3, wherein the power receiving means is constituted by a container side coil and a power supply circuit, and the power transmission means is constituted by a device side coil and a high frequency generating means. The induction heating cooking apparatus according to claim 3, wherein the container side signal transmitting means is constituted by a light emitting element control circuit and a light emitting element, and the equipment side signal receiving means is constituted by a light receiving element control circuit and a light receiving element.