JP2006086021A - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out temperature control of an object to be heated according to floating, misalignment and a bottom shape of the object to be heated. <P>SOLUTION: Temperature control of the object to be heated is carried out according to material of the object to be heated, the floating and the misalignment of the object to be heated and the bottom shape by partition plates 7a and 7b installed between the heating coil 1 and the object to be heated 3 and consisting of non magnetic bodies reducing the floating force of the object to be heated 3 when induction heating is carried out on the non magnetic object to be heated 3 and divided into two sections of right and left, right and left partition plate temperature detecting means 8a and 8b, a temperature detecting means 5 detecting the temperature of the object to be heated 3, a material detecting means 9 for the object to be heated 3 and a control means 6 increasing and decreasing output of an induction heating means 2 to a heating coil 1 to carry out temperature control of the object to be heated 3 according to the temperature of the temperature detecting means 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an induction heating cooker used in kitchens such as general homes, restaurants and offices.

Conventionally, in this type of induction heating cooker, the pan (to-be-heated object) is a non-magnetic material, or the pan is lifted or misaligned, and the temperature control of the to-be-heated object is stopped or suppressed. Have been proposed (see, for example, Patent Document 1).
JP 2003-282228 A

  However, in the conventional configuration, there is a problem that it is difficult to control the temperature in response to a floating or misalignment when the object to be heated is a non-magnetic material such as aluminum, and the bottom shape, for example, the bottom is warped. There was a problem that it was difficult to control the temperature with a heated object.

  The present invention solves the above-described conventional problems, and depending on the material of the object to be heated, such as aluminum, or the magnetic material such as iron, the nonmagnetic object to be heated is floated and positioned. An object of the present invention is to provide an induction heating cooker that can control the temperature of an object to be heated in accordance with the displacement and bottom shape and is easy to use.

  In order to solve the above-described conventional problems, an induction heating cooker according to the present invention includes a heating coil for induction heating a non-magnetic material such as aluminum or a magnetic material such as iron, and a high-frequency current to the heating coil. Inductive heating means to supply, aluminum which is installed between the heating coil and the object to be heated, and reduces the buoyancy of the object to be heated of the non-magnetic material when the object to be heated is induction heated A partition plate made of a non-magnetic material and divided into a plurality of parts, and a partition plate temperature detection means for detecting the temperature of each part of the partition plate disposed on each of the divided parts of the partition plate; A temperature detecting means for detecting the temperature of the object to be heated; a material detecting means for the object to be heated; and a control means for adjusting the output of the induction heating means in accordance with the detected temperature of the temperature detecting means, The control means is the material When the object to be heated of a magnetic material such as iron is induction-heated based on the detection result of the detection means, the partition plate acts as a heat receiving plate from the object to be heated, and depends on the detection temperature of the partition plate temperature detection means. When the output of the induction heating means is controlled and the magnetic material is not the object to be heated, the difference between the detected temperatures from the partition plate temperature detecting means of each part of the partition plate becomes a predetermined temperature 1 or more. It has a position deviation detecting means for detecting the position deviation of the object to be heated, and adjusts the output of the induction heating means according to the position deviation detection of the position deviation detecting means.

  Accordingly, the temperature of the object to be heated depends on the nonmagnetic material such as aluminum or the magnetic material such as iron of the material to be heated, and also depending on the floating or misalignment of the nonmagnetic object to be heated. Since it becomes possible to perform control, an induction heating cooker that is easy to use can be provided.

  The induction heating cooker of the present invention is to be heated according to a non-magnetic material such as aluminum or a magnetic material such as iron as the material of the object to be heated, or according to the floating or misalignment of the non-magnetic object to be heated. Therefore, the user can cook with ease of use.

  According to a first aspect of the present invention, there is provided a heating coil for inductively heating an object to be heated of a non-magnetic material such as aluminum or a magnetic material such as iron, induction heating means for supplying a high frequency current to the heating coil, the heating coil and the object to be heated. A non-magnetic material, such as aluminum, that reduces the buoyancy of the non-magnetic material when the non-magnetic material to be heated is induction-heated and is divided into a plurality of parts. A partition plate configured; partition plate temperature detection means for detecting the temperature of each part of the partition plate by distributing each part of the partition plate; temperature detection means for detecting the temperature of the object to be heated; Material detection means, and control means for adjusting the output of the induction heating means according to the temperature of the temperature detection means, the control means of the magnetic material such as iron according to the detection result of the material detection means Place for induction heating of the object to be heated Causes the partition plate to act as a heat receiving plate from the object to be heated, controls the output of the induction heating means according to the temperature detected by the partition plate temperature detection means, and is not the magnetic object to be heated. And a positional deviation detecting means for detecting a positional deviation of the object to be heated when a difference in detected temperature from the divider plate temperature detecting means of each part of the divider plate becomes a predetermined temperature 1 or more, By adjusting the output of the induction heating means according to the detection of the position deviation of the means, it is possible to control the temperature of the heated object according to the material of the heated object, and the heated object is a non-magnetic material such as aluminum. It is possible to detect the movement of the heated object due to floating, and to detect this and switch the temperature control of the heated object according to the positional relationship of the heated object. Can provide the vessel That.

  The second invention is the temperature of the detected temperature from the partition plate temperature detecting means of each part of the partition plate and the detected temperature of the temperature detecting means when the magnetic material is not the object to be heated. It has a bottom shape detection means for discriminating and detecting the bottom shape of the object to be heated depending on whether the difference is equal to or higher than a predetermined temperature 2, and the control means adjusts the output of the induction heating means according to the discrimination detection of the bottom shape detection means Then, it is possible to control the temperature of the heated object according to the bottom shape of the heated object, and it is possible to provide an easy-to-use induction heating cooker.

  In the third invention, in particular, the partition plate according to the first or second invention is divided into three or more parts, each of which is provided with partition plate temperature detecting means for detecting the temperature of the partition plate, Depending on the material of the non-magnetic material such as aluminum and the magnetic material such as iron, depending on the floating state of the object to be heated, the position of the misalignment, and depending on the bottom shape of the object to be heated It is possible to perform temperature control with higher accuracy and to provide an easy-to-use induction heating cooker.

  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 block diagram showing the configuration of the induction heating cooker according to the first embodiment of the present invention. Hereinafter, the configuration and functions of the present embodiment will be described with reference to FIG.

  In FIG. 1, a heating coil 1 induction-heats a non-magnetic object to be heated such as aluminum or a magnetic object to be heated 3 such as iron. Induction heating means 2 supplies a high-frequency current to the heating coil 1 and a top plate 4. The temperature detecting means 5 detects the temperature of the object to be heated 3, and the control means 6 controls the temperature of the object to be heated 3 according to the temperature detected by the temperature detecting means 5 in order to bring the object to be heated 3 to a predetermined temperature. Therefore, the output of the induction heating means 2 is adjusted. A partition plate 7 made of a nonmagnetic material such as aluminum is installed between the heating coil 1 and the object 3 to be heated, and the object 3 to be heated when the nonmagnetic material 3 such as aluminum is induction-heated. The left partition plate 7a and the right partition plate 7b are divided into two so as to reduce the buoyancy and to easily detect the floating and displacement of the article 3 to be heated. The partition plate temperature detection means 8 includes a left partition plate temperature detection unit 8a that detects the temperature of the left partition plate 7a, and a partition plate temperature detection unit 8b that detects the temperature of the right partition plate 7b.

  The partition plate 7 functions as a heat receiving plate from the heated object 3 when induction heating the heated object 3 of a magnetic material such as iron based on the detection result of the material of the heated object 3 by the material detecting means 9. In the case of the object to be heated 3 that is not a magnetic body, the output of the induction heating means 2 is adjusted in order to control the temperature of the object to be heated 3 according to the temperatures of the left and right parts 8a and 8b of the partition plate temperature detecting means 8.

  The misalignment detection means 10 is induction-heated to control the temperature of the article 3 to be heated when the difference between the detected temperatures from the left and right partition plate temperature detection means 8a and 8b exceeds a predetermined temperature 1 (50 ° C. in this embodiment). By adjusting the output of the means 2, the temperature of the object to be heated is controlled according to the positional deviation relationship between the object to be heated 3 and the heating coil 1.

  The bottom shape detector 11 detects the temperature of the article 3 to be heated when the detected temperatures of the left and right partition plate temperature detectors 8a and 8b are equal to or higher than the detection temperature of the temperature detection temperature 5 by a predetermined temperature 2 (50 ° C. in this embodiment). In order to control, the temperature of the object to be heated is controlled in accordance with the pan bottom shape relationship between the object to be heated 3 and the heating coil 1 that adjusts the output of the induction heating means 2.

  The control means 6 comprises a microcomputer (hereinafter referred to as a microcomputer 6), and the misalignment detection means 10 and the bottom shape detection means 11 (not shown) are configured in the same microcomputer 6 as a program and operate as described above. Is to do.

  FIG. 2 is a flowchart showing the temperature control operation of the induction heating cooker according to the first embodiment of the present invention, and shows the temperature control operation of the program misregistration detection means 10 stored in the microcomputer 6.

  Hereinafter, the temperature control operation will be described.

  First, when a temperature control start switch (not shown) is turned on, the induction heating means 2 is controlled to start temperature control (S100). Next, a set temperature is set in S101.

  Here, when the position of the article 3 to be heated is shifted as shown in FIG. 3, a temperature difference between the left and right partition plate temperature detecting means 8a and 8b is generated.

  In S102, when the temperature of the left and right partition plate temperature detecting means 8a, 8b becomes equal to or higher than a predetermined temperature 1 (for example, 50 ° C.), heating is stopped (S104), and otherwise heating is started (S103). When the temperature control stop switch (not shown) is turned on in S105, the temperature control operation is stopped.

  In the first embodiment, the left partition plate 7a and the right partition plate 7b are divided into two parts so that misalignment is easy to detect. However, in order to improve accuracy, the partition plate 7 is divided into three or more parts, You may provide the partition plate temperature detection means 8a, 8b, 8c which detects the temperature of a partition plate. By doing so, the azimuth or the amount of displacement may be detected with high accuracy.

  Next, FIG. 4 is a flowchart showing the temperature control operation of the bottom shape detecting means 11 of the program stored in the microcomputer 6.

  Hereinafter, the temperature control operation will be described.

  First, when a temperature control start switch (not shown) is turned on, the induction heating means 2 is controlled to start temperature control (S200). Next, a set temperature is set in S201.

  Here, when the bottom shape of the article 3 to be heated is concave (inward warping) as shown in FIG. 5, a temperature difference between the left and right partition plate temperature detection means 8 a and 8 b and the detection temperature of the temperature detection means 5 occurs. .

  In S202, when the detected temperatures of the left and right partition plate temperature detecting means 8a, 8b and the temperature detecting means 5 are equal to or higher than a predetermined temperature 2 (for example, 50 ° C.), heating is stopped (S204), otherwise heating is started. (S203). When the temperature control stop switch (not shown) is turned on in S205, the temperature control operation is stopped.

  5 illustrates the case where the bottom shape of the object to be heated 3 is concave, but as shown in FIG. 7, even if the bottom shape of the object to be heated 3 is convex downward as shown in FIG. Even if the bottom shape of the article 3 to be heated is small, a temperature difference between the temperature detection means 8a, 8b on the left and right and the detection temperature of the temperature detection means 5 occurs, and the control means 6 performs similar temperature control. be able to.

  The predetermined temperature 2 may be set in a plurality of stages, and the temperature control content may be changed according to the detected amount of warpage or the relationship between the bottom shape and the thermal efficiency.

  As described above, the induction heating cooker according to the present invention controls the temperature of the object to be heated according to the material of the object to be heated, the installation state of the nonmagnetic object to be heated, or the bottom shape. Since it can be performed, it can be applied to applications such as stationary use used in ordinary homes, restaurants and offices, or built-in induction heating cookers.

The block diagram of the induction heating cooking appliance in Embodiment 1 of this invention The flowchart which shows the temperature control operation | movement of the induction heating cooking appliance in Embodiment 1 of this invention. Block diagram of induction heating cooker in Embodiment 1 of the present invention when the position of the object to be heated is shifted The flowchart which showed temperature control operation | movement of the bottom shape detection means of the induction heating cooking appliance in Embodiment 1 of this invention. The block diagram of the induction heating cooking appliance in Embodiment 1 of this invention in case the bottom shape of a to-be-heated object is a concave shape (inward curvature). Block diagram of induction heating cooker in embodiment 1 of the present invention when bottom shape of object to be heated is convex downward The block diagram of the induction heating cooking appliance in Embodiment 1 of this invention in case the bottom shape of the to-be-heated material 3 is small diameter

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating coil 2 Induction heating means 3 Object to be heated 4 Top plate 5 Temperature detection means 6 Control means 7a Left partition plate (partition plate)
7b Right partition plate (partition plate)
8a Left partition plate temperature detection means (partition plate temperature detection means)
8b Right partition plate temperature detection means (partition plate temperature detection means)
9 Material detecting means 10 Misalignment detecting means 11 Bottom shape detecting means

Claims (3)

A heating coil for induction heating a non-magnetic material such as aluminum or a magnetic material such as iron, induction heating means for supplying a high frequency current to the heating coil, and between the heating coil and the heated material A partition plate composed of a non-magnetic material such as aluminum that reduces the buoyancy of the non-magnetic material to be heated when the non-magnetic material to be heated is induction-heated and divided into a plurality of parts; A partition plate temperature detection means for detecting the temperature of each part of the partition plate disposed on each of the divided parts of the partition plate, a temperature detection means for detecting the temperature of the heated object, and the heated object Material detecting means, and control means for adjusting the output of the induction heating means in accordance with the temperature detected by the temperature detecting means. The control means is configured to detect a magnetic material such as iron based on the detection result of the material detecting means. Inductively heating the object to be heated The partition plate acts as a heat receiving plate from the object to be heated, and the output of the induction heating unit is controlled in accordance with the temperature detected by the partition plate temperature detection unit, so that the magnetic material is not the object to be heated. In this case, there is provided a position deviation detecting means for detecting a position deviation of the object to be heated when a difference in detected temperature from the partition plate temperature detecting means of each part of the partition plate becomes a predetermined temperature 1 or more, An induction heating cooker that adjusts the output of the induction heating means in accordance with the position shift detection of the deviation detection means. When the object is not a magnetic object to be heated, the bottom of the object to be heated depends on whether the temperature difference between the temperature detected by the partition plate temperature detecting means and the temperature detected by the temperature detecting means of each part of the partition plate is a predetermined temperature 2 or more. The induction heating cooker according to claim 1, further comprising a bottom shape detection unit that determines and detects a shape, wherein the control unit adjusts the output of the induction heating unit in accordance with the determination detection of the bottom shape detection unit. 3. The induction heating cooker according to claim 1, wherein the partition plate is divided into at least three or more portions, and each includes partition plate temperature detection means for detecting the temperature of the partition plate.

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