JPS6127110Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a heat-sensitive element that detects the temperature of a pot that is induction heated in an electromagnetic cooker.

An electromagnetic cooker supplies high-frequency current from a high-frequency inverter to a heating coil to generate a high-frequency alternating magnetic field in the heating coil, which inductively heats a ferrous metal pot placed close to the heating coil. They are superior to gas stoves in that they are safe because there is no risk of burns or the like even if you touch the mounting surface directly, and they are easy to clean, so they are becoming more and more commonly used. However, in the case of such an electromagnetic cooker, the heating operation is difficult to understand at first glance, so it is easy to leave an empty pot on the pot mounting surface of the cooker and forget to turn off the power. In this case, the pot may be heated to an abnormally high temperature, which is dangerous. For this reason, a heat-sensitive element has conventionally been attached to the back surface of the top plate of the electromagnetic cooker, which serves as the pot-mounting surface, and the temperature of the pot has been detected using this heat-sensitive element.

Figure 1 shows the mounting structure of a conventional heat-sensitive element.
The ceramic top plate 2 on which non-heated items such as pots are placed is a heating coil stand on which a heating coil 3 is attached;
Reference numeral 4 denotes a heat-sensitive element such as a thermostat whose exterior is made of a non-magnetic metal such as aluminum, and is attached to a holder 5 made of a rubber body or the like. Here, the holder 5 is sandwiched between the heating coil stand 2 and the ceramic top plate 1 at approximately the center of the heating coil 3, and the heating coil stand 2 moves the thermo holder from below to the top plate 1.
The heat-sensitive element 4 is brought into contact with the top plate 1 by being pressed against the top plate 1.

However, in this mounting structure for the heat-sensitive element 4, the heat-sensitive element 4 is pressed against the top plate 1 by utilizing the elasticity of the cylindrical holder 5, but the holder 5 does not have a very large compressibility. Therefore, the heat sensitive element 4
When a heavy pot or the like falls onto the top plate 1 at the top of the contact area, the holder 5 will not be compressed very much, so the top plate 1 will not be able to soften this impact due to its own vibration, and there is a risk of it breaking. It was hot. In addition, the heat-sensitive element 4
Since the element 4 is wrapped in the holder 5, the heat-sensitive element 4, which is partially made of a conductive material such as aluminum, is heated by induction, and the heat generated by the element 4 is heated, albeit slightly. There was a risk that the heat would not be radiated and the temperature detection of the pot would be inaccurate.

The present invention was devised in view of these drawbacks, and will be described in detail below with reference to the drawings.

FIG. 2 is a diagram showing the holder used in the mounting structure of the present invention set on a heating coil stand, and the same parts as in FIG. 1 are given the same numbers. 6
indicates a holder used in the present invention, and the heat-sensitive element 4
a cylindrical mounting part 7 to which the heating coil base 2 is attached; a support part 8 that fits into the end of a hole bored in the center of the heating coil base 2 to support the mounting part 7;
a cushion portion 9 that elastically connects the mounting portion 7 and the mounting portion 7;
It consists of and. In this case, the holder 6 is integrally formed of an elastic member such as silicone rubber, and the cushion portion 9 is formed thinner and has a shape that further increases elasticity. Further, a notch 10 is provided on the upper side surface of the mounting portion 7 to expose a part of the heat-sensitive element 4. Here, in order to cool the heating coil 3, the optimum cooling effect is determined for the direction of the wind sent from the fan (not shown).
That is, the direction of the notch 10 is adjusted so that the amount of heat that the heat-sensitive element 4 is heated by induction heating is substantially radiated. FIG. 3 is a sectional view showing the mounting structure of the heat-sensitive element of the present invention, and the same parts as in FIGS. 1 and 2 are given the same figure numbers. Here, the heat-sensitive element 4 is pressed against the top plate 1 by the elastic force of the cushion portion 9 of the holder 6 by appropriately adjusting the distance between the heating coil stand 2 and the top plate 1.

In such a mounting structure for the heat-sensitive element 4, even if a heavy pot or the like falls onto the ceramic plate 1, the heat-sensitive element 4, the mounting part 7, etc. can elastically move up and down by the action of the cushion part 9. Therefore, the top plate 1 can sufficiently vibrate, and the impact can be sufficiently alleviated by this vibration. In addition, the amount of heat generated by induction heating of the heat-sensitive element 4 itself is appropriately radiated by the head wind for cooling the heating coil 3.
The heat sensitive element 4 can accurately detect only the temperature of a non-heated object such as a pot placed on the ceramic top plate 1.

As described above, the mounting structure of the heat-sensitive element of the present invention consists of a mounting part to which the heat-sensitive element is mounted, a support part that supports this mounting part, and a cushion part that elastically connects this support part and the mounting part. The supporting part is fixed to a base such as a heating coil stand, and the heat-sensitive element is elastically pressed against the top plate by using the elasticity of the cushion part, so that the weight of the pot etc. is not attached to the top plate. Even if an object is dropped, the shock is sufficiently absorbed by the vibration of the top plate itself, and there is no danger of the ceramic top plate being destroyed.

In addition, the mounting part is provided with a notch to partially expose the heat-sensitive element, and the direction of this notch is adjusted to the direction of air blowing that should provide the optimum cooling effect, so that the air is guided to the heat-sensitive element itself. The heat generated by heating is properly radiated, and the heat-sensitive element can accurately detect only the temperature of the non-heated object on the top plate.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional mounting structure for a heat-sensitive element, Fig. 2 is a partially cutaway cross-sectional view of a holder used in the mounting structure for a heat-sensitive element of the present invention when attached to a heating coil base, and Fig. 3 is a cross-sectional view showing the mounting structure for a heat-sensitive element of the present invention. 1 ... ceramic top plate, 2 ... heating coil base,
4: heat-sensitive element; 6: holder; 7: mounting portion;
8...support part, 9...cushion part, 10...notch.

Claims (1)

[Scope of utility model registration request] A non-heating device placed on the top plate using a heat-sensitive element that is pressure-welded to the back of the top plate in the approximate center of the heating coil and cooled by using the air sent to the space between the heating coil and the top plate to cool the heating coil. An electromagnetic cooker configured to detect the temperature of a heated object includes: a mounting portion to which the heat-sensitive element is attached; a support portion supporting the mounting portion; and a cushion portion elastically connecting the support portion and the mounting portion. , the mounting portion is provided with a cutout for partially exposing the heat-sensitive element, and the direction of the cutout is adjusted and arranged with respect to the air blowing direction to obtain an optimal cooling effect. A mounting structure for a heat-sensitive element characterized by: