JPS63190285A - Heated object for induction heating cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an object to be heated for an induction heating cooker, in which a heating element which is heated by excitation is provided on the bottom surface of the object formed of a non-magnetic material.

2. Description of the Related Art Conventionally, when controlling the temperature of a food to be cooked using an induction heating cooker, as shown in FIG. Temperature control is performed by detecting temperature changes via the top plate 2 and controlling the output of the induction heating cooker 1.

Problems to be Solved by the Invention However, in the case of the conventional structure, the temperature sensor 3 indirectly detects the temperature of the 117Xl heated object 4 through the top plate 2, so the temperature accuracy is poor. There is also a large time delay. In particular, there is a problem in that variations in the degree of contact with the top plate 2 due to the shape of the bottom 6 of the object to be heated 4 greatly affect temperature accuracy.

Therefore, the present invention aims to improve the temperature accuracy by directly detecting the temperature change of the heated object.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to provide a heating element that is induction heated on the bottom surface of a heating element made of a non-magnetic material, and to heat the heating element by induction heating. The heating element is electrically connected to a thermostat installed at a position that detects temperature changes in the heated element.

action The effect of this technical means is as follows.

In other words, if the thermostat is set to "1 person", the heating element installed on the bottom of the heated object has a closed loop configuration in a circular shape, so when the induction heating cooker is energized,
An induced current is excited in the heating element m to generate heat, and the food to be cooked in the heating object is heated. When the temperature rises at a constant temperature of 1, the thermostat senses the temperature rise and turns "off", the closed-loop configuration of the heating element is released and almost no induced current is excited.

Therefore, the temperature of the food inside the object to be heated is kept constant, and the temperature can be directly detected, so that temperature accuracy can be improved.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the drawings marked with 'f&.

1 and 2, reference numeral 6 denotes a heating container which is a heated body made of an insulating material such as ceramic, and a heating body 8 made of a conductive material such as silver or aluminum is attached to the bottom surface 7 of the heating container 6. is applied by a method such as thermal spraying. The heating element 8 is provided with a dividing groove 9 that opens from the center toward the outer periphery. Ends 10 and 11 of the heating elements on both sides of the dividing groove 9 are electrically connected to a thermostat 13 attached to the side surface 12 of the m-heat container 6, respectively. A temperature control knob 16 is attached to the thermostat 13 via a shaft 14. In addition, in order to transmit the temperature change in the inside 16 of the heating container 6 to the thermostat 13, a heat transfer rod 17 made of a material with high thermal conductivity such as aluminum or copper is connected to the side surface 12 from the inside 16 of the heating container 6. It is closely fixed to the thermo stand 13 by passing it through.

Next, the entire operation of the configuration of this embodiment will be explained. When the m-heating appliance 18 having the above configuration is placed on the top plate 2 of the induction heating cooker 1 and the induction heating cooker 1 is fully energized, the thermostat 13 is in the "on" state at low temperatures, so the m-heating element 8 has an electrically closed loop configuration. Therefore, the lines of magnetic force oscillated from the heating coil 19 of the induction heating cooker 1 cause an induced current to be excited in the heating body 8 and start heating. When heating is continued and the temperature inside 16 of heating container 6 rises, the thermostat 13 is turned off due to the heat transmitted through heat transfer rod 17. In this state, the closed loop of the m-heating body 8 is released, so almost no induced current is excited, the temperature rise in the inside 16 of the m-heating container 6 stops, and when the temperature drops, full heating starts again. By repeating the operation, the temperature inside the heating container θ can be kept constant. 'E7' (Temperature control knob 15
You can change the temperature setting by operating the .

In the above configuration, strictly speaking, thermostat 1
Regarding the operation by ``on'' and ``off'' in 3.

The temperature is adjusted by switching between high and low heating levels, but typical induction heating cookers have a built-in small object detection function as a safety device. In other words, it is a function that stops the oscillation of magnetic lines of force when the induced current that is excited is less than a certain capacity. Therefore, by setting the induced current capacity when the thermostat 13 of the m-heating appliance 18 of this embodiment is in the "off" state to be less than the small object detection capacity, the oscillation of the induction heating cooker 2 can be suppressed in the "off" state. Can be stopped. Therefore, it is possible to electrically control the temperature by turning it on and off.
Temperature control in the low temperature range is also possible.

In the above embodiments, the object to be heated is a container such as a pot, but the object is not limited to this and may be a flat plate. Further, although the heating element on the bottom surface of the container 6 is made in the form of a thin film, it may be made of a thick metal plate or the like.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the heat appliance itself is provided with a temperature control function and a temperature detection function. Therefore, it is possible to improve the accuracy of temperature control, and even in induction heating cookers that do not have a temperature control function, it is possible to cook with full use of temperature control, which has a great effect on expanding the cooking software for induction heating cookers. It is something that brings.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a heating device in an embodiment of the present invention;
Figure 2 is a sectional view showing the same heating appliance placed on an induction heating cooker, Figure 3 is a perspective view of the same, and Figure 4 is a conventional heating appliance placed on an induction heating cooker. FIG. 6...m heat container, 8...m heat body, 9...
・・・・・・Dividing groove, 10.11・・・・・・m End of heating body, 13・・・Thermostat. Name of agent: Patent attorney Toshio Nakao and 1 other person6-
Kadajo (vessel)

Claims (1)

[Claims] A heating element that is excited and heated is provided on the bottom surface of the heated object made of non-magnetic material, and this heating element is an induction wire that is electrically connected to a thermostat installed at a position that detects temperature changes in the heated object. A heated object for a heating cooker.