JPH0425837Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to an electromagnetic induction cooking device that directly heats a pot or the like using electromagnetic waves.

BACKGROUND ART The inventors of the present invention have proposed a structure as shown in FIG. 3 as an electromagnetic induction cooking device that achieves thinning. That is, a heating coil 2 that generates electromagnetic waves by passing a high-frequency current through the main body 1, and a control circuit 3 that controls the high-frequency current to flow through the heating coil 2.
Furthermore, a thin cooling fan 4 for forcibly cooling these parts is built in, and a ceramic plate 5 is constructed on the top surface of the main body 1, and lead is placed on this plate 5 to heat it. I was getting used to it. Further, the cooling fan 4 is connected to a fan motor 6, and the fan motor 6 is mounted within a mounting bracket 7 having a concave cross section to be held in the main body 1.

Problems to be Solved by the Invention However, with such a structure, if the fan motor 6 is a DC motor or the like having commutating brushes, there is a problem in that brush noise of the motor is likely to be emitted to the outside. Another problem was that the motor was heated by the radiant heat from the heated pot, so the height of the main body had to be increased in order to increase the distance from the pot.

Therefore, the present invention is intended to suppress the noise of motor brushes from being emitted to the outside, and to prevent the temperature of the motor from rising due to radiation from the pan.

Means for Solving the Problems The technical means of the present invention for solving the above problems consists of a main body, a heating coil disposed inside the main body,
A control device and a cooling fan are provided inside the main body, and the cooling fan is supported by a mounting bracket having a concave cross section.
A fan motor is provided in the recessed portion of the mounting bracket, and a sound insulating material having sound absorbing properties is disposed at least on the upper opening of the recessed portion to close the upper opening.

Effect The effect of this technical means is as follows.
In other words, the area around the fan motor is covered with mounting brackets and sound-absorbing sound insulating material, which prevents the motor's brush noise from coming out and blocks heat radiated from pots, etc., to prevent the motor's temperature from rising. become.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. The basic configuration is the same as the conventional example shown in FIGS. 3 and 4, but the difference is that the upper opening 7b of the concave portion 7a of the mounting bracket 7, which has a concave cross section to which the fan motor 6 is attached, has sound absorbing properties. The sound insulating material 8 having the above structure is attached to close the upper surface opening 7b.
9 is an intake hole.

Next, the operation of the configuration of this embodiment will be explained.

When the electromagnetic induction heating cooker is energized, the control circuit 3
is activated, a high frequency current flows through the heating coil 2, and electromagnetic waves are generated. The electromagnetic wave passes through the plate 5,
Generates an eddy current in the pot. This eddy current causes resistance heating, which heats up the pot and allows you to cook. When the fan motor 6 is energized, it simultaneously rotates the cooling fan 4 to cool the control circuit 3 and the like. Here, the noise generated from the fan motor 6 is caused by the mounting bracket 7 and the sound insulating material 8.
This prevents it from coming out and reduces noise. Furthermore, the radiation from the pot reaches into the main body 1 through the plate 5 and tries to reach the fan motor 6, but because of the sound insulation material 8, it does not reach the fan motor 6, and the temperature of the fan motor 6 decreases. can prevent a rise in In the above example,
Although the sound insulation device 8 is provided only in the upper surface opening 7b of the recessed portion 7a, the present invention is not limited thereto.
It may be arranged on the inner surface of a. However, in this case, the installation of the sound insulating material 8 is troublesome, and the cost increases.

Effects of the invention As is clear from the above description of the embodiments, the present invention has the effect of covering the fan motor with a mounting bracket and sound insulating material, which has the effect of making it difficult for the noise from the fan motor itself to go outside. This has the effect that radiation from the heated object can be prevented without requiring a large distance from the heated object, and the main body can be made thin.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of an electromagnetic induction heating cooker showing an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of the fan motor attachment part, and Fig. 3 is a conventional example of electromagnetic induction heating. FIG. 4 is a longitudinal cross-sectional view of the cooking appliance, and is a partially cutaway perspective view of the fan motor mounting portion. 1... Body, 4... Cooling fan, 6... Fan motor, 7... Mounting bracket, 7a... Recessed part,
7b...Top opening, 8...Sound insulating material.

Claims (1)

[Scope of utility model registration request] It includes a main body, a heating coil placed inside the main body, a control device, and a cooling fan that cools the inside of the main body.
The cooling fan is connected to a fan motor via a motor shaft, and the fan motor is provided inside a concave portion of a mounting bracket having a concave cross section;
In the electromagnetic induction heating cooker, the cooling fan is provided outside the recessed portion, and a sound insulating material having sound absorbing properties is disposed at least on the upper opening of the recessed portion to close the upper opening.