JPH0646620U - Rotary electromagnetic induction cooker - Google Patents

Abstract

(57) [Abstract] [Purpose] Efficiently heat the lower part of the food in the inclined container to control it. [Structure] The container 2 is placed on the main body 7 in an inclined state, and is rotated in an inclined state by the rotation driving means 11 and 12. The portion below the surface of the foodstuff inside the container 2 by the electromagnetic induction heating means 15 having the induction heating coil 14 provided along the semi-cylindrical surface of the main body 7 facing the lower side surface of the inclined container 2. Only the heat is generated to heat the ingredients inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary electromagnetic induction heating cooker.

[0002]

[Prior art]

 When cooking curry, stew, etc., it is necessary to stir appropriately with a ball etc. so that there is no unevenness in the boiling, and the ingredients do not burn even when cooking fried noodles, stir-fried vegetables, fried rice, etc. It is necessary to stir with constant mixing so that it can be cooked well. For this reason, various cookers have been proposed in the past, which are capable of cooking while automatically stirring the ingredients. For example, in Japanese Unexamined Patent Publication No. 63-175375 and Japanese Unexamined Patent Publication No. 4-212316, a cooking pot is rotatably provided in a processing container, and an electromagnetic heating coil is provided so as to surround the bottom and side surfaces of the cooking pot. On the other hand, there is proposed a cooker in which the processing container itself can be tilted on the base.

[0003]

[Problems to be solved by the device]

 However, in the conventional cooker, the induction heating coil is arranged so as to surround the side surface of the cooking pot, so that the portion above the surface of the food in the inclined container does not need to be heated. Nevertheless, it is heated by the induction heating coil and heats up to a temperature higher than the lower part. For this reason, the food sometimes burned when the part that generated heat at the high temperature came around. Moreover, since the load is different above and below the food, there is a problem that it is difficult to control induction heating. The present invention has been made in view of the above problems, and an object thereof is to provide a rotary induction heating cooker that can efficiently heat a portion below the surface of food in an inclined container and is easy to control. And

[0004]

[Means for Solving the Problems]

 To achieve the above object, the present invention is directed to a container placed on a main body in an inclined state, a rotation driving means for rotating the container in an inclined state, and a lower side surface of the container in the inclined state. The induction heating coil provided along the semi-cylindrical surface of the main body is provided with electromagnetic induction heating means for heating the container to heat the food inside. In addition to this, by controlling the electromagnetic induction heating means based on the temperature detecting means for detecting the temperature of the outer surface of the bottom of the container and the temperature of the container detected by the temperature detecting means, A control means for adjusting the temperature to a preset temperature may be provided. In this case, it is preferable that the temperature detecting means detects the temperature without contacting the container.

[0005]

[Action]

 According to the above construction, the container is rotated by the rotation driving means, and heat is generated by the induction heating action of the induction heating means. As a result, the food in the container is heated while being stirred. Since the induction heating coil is installed along the semi-cylindrical surface of the main body that faces the lower side surface of the inclined container, only the portion below the surface of the food inside the container heats and heats the food. To do. Therefore, the induction heating coil always faces the food material through the container wall, and the heating is controlled under a uniform load condition.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a rotary induction heating cooker according to the present invention. In FIG. 1, a container 2 having a lid 1 is made of a material such as stainless steel that generates heat by induction heating and has a relatively deep bottom. The thermistor 4 and the secondary induction coil 5 are housed in the recess 3 provided in the center of the outer surface of the bottom of the container 2, and these constitute a closed temperature detection circuit 6 as shown in FIG. The main body 7 is formed with a container mounting portion 8 having a semi-cylindrical curved surface. The axis of the semi-cylindrical curved surface of the container mounting portion 8 is inclined with respect to the horizontal plane, and the container 2 can be mounted in an inclined state. The container mounting portion 8 has a support roller 9 that rotatably supports the container 2 in contact with the outer surface of the container 2, a protrusion 10 that supports the outer surface of the bottom of the container 2, and a peripheral surface of the container 2. A drive roller 12 is provided which is in pressure contact with the container and is driven by a motor 11 to rotate the container 2 about its axis.

Inside the main body 7, an induction heating coil 14 is formed in the semi-cylindrical curved surface so as to face the lower side surface of the container 2, that is, the side surface below the surface of the foodstuffs contained in the container 2. It is wound in a saddle shape. The induction heating coil 14 is controlled by an induction heating device 15. A primary induction coil 16 is housed inside the protrusion 10 so as to face the secondary induction coil 5 of the container 2. Although not shown, a temperature setting key, a menu setting key, a time setting key, a start key, and a buzzer are provided outside the main body 7. Reference numeral 17 is a control device equipped with a micro computer, which executes a predetermined program to control the motor 11 and the induction heating device 15 according to the set temperature and menu. Further, the control device 17 can detect the presence / absence of the container 2 by detecting a value at which an electric current flows through the induction heating device 15.

The operation of the electromagnetic induction heating cooker by the controller 17 will be described below with reference to the flow chart shown in the figure. First, in step 101, input of each key of temperature setting, menu setting, and time setting is accepted, and in step 102, it is determined whether or not the start key is pressed. If the start key is not pressed, the process returns to step 101 and waits until it is pressed, and if it is pressed, it is determined in step 103 whether the container 2 is set in the main body 7 based on the current value flowing in the induction heating device 15. To judge. If the container 2 is not set, the buzzer notifies the absence of the container at step 104, and if it is set, a drive signal is output to the motor 11 at step 105 to start the rotation of the container 2.

Subsequently, in step 106, an operation signal is output to the induction heating device 15 to start heating. During heating, the temperature of the container 2 is detected in step 7 to control the set temperature or the temperature according to the set menu. If the completion condition is satisfied in step 108, a stop signal is output to the motor 11 and the induction heating device 15 in step 109 to stop the rotation and heating of the container 2 and then the buzzer or the like notifies the end.

By operating the control device 15 in this way, it is possible to easily perform simmering cooking or stir-fried cooking without burning. For example, stir-fried cooking such as yakisoba will be described. First, the container 2 is set in the main body 7, the temperature and time are set, and the start key is pressed. As a result, the motor 11 is driven and the drive roller 12 is rotated, so that the container 2 is rotated in a tilted state on the main body 7. At the same time, the induction heating device 15 operates to generate heat only on the lower side surface of the container 2 facing the induction heating coil 14. Then, when the container 2 is heated to some extent, oil is added, and when the oil has spread sufficiently to the inner surface of the container 2, the materials and necessary seasonings are added and the lid 1 is closed. Thereby, the material in the container 2 is heated and cooked while being stirred. If only the menu is set, the heating pattern of temperature and time prestored in the memory of the controller 17 is set according to the menu, and the heating pattern is controlled according to the set heating pattern.

During cooking, the controller 15 constantly supplies a current to the primary side induction coil 16, so that a current flows through the secondary side temperature detection circuit 6 by electromagnetic induction. Since the resistance of the thermistor 4 in the temperature detection circuit 6 on the secondary side changes due to the temperature change of the container 2, it constitutes a load on the secondary side. Therefore, by detecting the change in the impedance on the primary side, the change in the load on the primary side, that is, the temperature change can be detected without contact. The secondary side detection circuit 6 is provided at the center of the outer surface of the bottom of the container 2 and detects the temperature at a position sufficiently distant from the induction heating coil 14, so that it is directly affected by the heat generated by the induction heating coil 14. And the detection accuracy is good. In the container 2, only the lower side surface facing the induction heating coil 14, that is, the side surface below the internal material, generates heat by the induction heating action, and the side surface above the material does not generate heat. Therefore, unlike the conventional case, the side surface above the material does not abnormally generate heat, and the material is not burned when it goes around downward.

Further, since the induction heating coil 14 is located below the surface of the material in the container 2, the induction heating coil 14 always faces the material and is under a load. As described above, in the conventional cooker, the induction heating coil is provided around the container to simultaneously heat the portion having a load above the material and the portion having a load below the material. It was difficult to control. On the other hand, since this cooker heats only the part of the same load, it is easy to control, and it is possible to adjust the heat power delicately.

[0013]

[Effect of device]

 As is clear from the above description, according to the present invention, the portion below the surface of the food in the container is effectively heated, so that the portion above the surface of the food generates heat abnormally as in the conventional case. There is no problem such as burning food ingredients, and even cooking can be performed. Moreover, since the load of the induction heating coil is uniform, heating control is easy. In particular, according to the invention of claim 2, since the induction heating coil detects the temperature at the bottom surface far away from the side surface of the opposing container, the temperature of the food in the container can be accurately detected. You can finely adjust the firepower. Further, according to the invention of claim 3, since the temperature detecting means detects the temperature of the container in a non-contact manner with respect to the rotating container, there is no wear, contact failure or failure of the contact portion unlike the contact type, and the detected temperature is High reliability and long life.

[Brief description of drawings]

FIG. 1 is a sectional view of a rotary induction heating cooker according to the present invention.

FIG. 2 is a sectional view taken along line I-I of FIG.

3 is a control block diagram of the cooking device of FIG. 1. FIG.

FIG. 4 is a control flowchart of the cooking device of FIG.

[Explanation of symbols]

2 ... container, 4 ... thermistor,
5 ... Secondary-side induction coil, 6 ... Temperature detection circuit (temperature detection means), 7 ... Main body,
11 ... Motor (rotational drive means), 12 ... Drive roller (rotational drive means), 14 ... Induction heating coil, 15 ... Induction heating device, 17 ... Control device.

Claims (3)

[Scope of utility model registration request] 1. A container to be mounted on the main body in an inclined state, a rotation driving means for rotating the container in an inclined state, and a semi-cylindrical surface of the main body facing the lower side surface of the container in the inclined state. A rotary electromagnetic induction heating cooker, comprising: an induction heating coil provided along the induction heating coil to heat the container to heat food in the container. 2. A temperature detecting means for detecting the temperature of the outer surface of the bottom of the container, and controlling the electromagnetic induction heating means based on the temperature of the container detected by the temperature detecting means,
The rotary electromagnetic induction heating cooker according to claim 1, further comprising control means for adjusting the temperature of the container to a preset temperature. 3. The rotary electromagnetic induction heating cooker according to claim 2, wherein the temperature detecting means detects the temperature of the container in a non-contact manner.