JP2573960Y2 - rice cooker - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker equipped with a component requiring forced cooling by a cooling fan, and more particularly to a rice cooker using an electromagnetic induction heating system having an inverter circuit.

[0002]

2. Description of the Related Art In order to cook delicious rice, a strong heat power is required.
In some cases, the inner pot is heated by electromagnetic induction.

[0003] Electromagnetic induction is a method in which an inner pot in which food is put is heated by an electromagnetic induction heating coil, and a non-contact electronic element type system such as an inverter circuit is generally used to control energization of the electromagnetic induction heating coil. (See, for example, JP-A-62-17985 and JP-B-63-5875).

[0004]

The conventional electromagnetic induction heating type rice cooker has a substantially rectangular main body, and has a configuration in which an intake port and an exhaust port are provided diagonally, so that the flow of air is complicated. Therefore, it was necessary to devise measures such as changing the area of the duct and the exhaust port for guiding the cooling air.

The method of providing a duct has a problem that the structure becomes complicated and a duct for rectifying a natural air flow acts as a resistance, so that a large fan is required to obtain a sufficient air volume and noise is increased. Further, in the method of changing the area of the exhaust port, uneven exhaust ports are lined up, and the appearance is impaired.

[0006]

Means for Solving the Problems The present invention has been made to solve the above problems, and has a main body formed in a substantially elliptical cylindrical shape, and a cooling fan and an intake port provided on one of the elliptical major diameter directions. On the other hand, an exhaust port is provided, and components having a relatively high temperature are arranged substantially along an elliptical arc between the intake port and the exhaust port.

[0007]

According to the above construction, the outside air sucked from the intake port by the cooling fan provided on one side in the major axis direction of the ellipse flows around the inside of the main body. The air flowing toward the exhaust port goes directly to the exhaust port while cooling the electromagnetic induction heating coil on the way. The air that does not go directly to the exhaust port hits an elliptical arc in the main body and is guided to the exhaust port. Since relatively high temperature components of the inverter circuit are arranged in this flow path, cooling is performed efficiently.

In the rectification by the duct, the components are arranged in the air blowing portion where the air is rectified near the cooling fan and the air is rectified by the duct, so that a large air resistance is obtained. It itself has a rectifying effect, so to speak, it is like placing parts in a large duct, so it does not hinder natural air flow and there is no resistance, so the cooling fan can be made small diameter or low rotation, and it does not generate noise . In addition, since the exhaust port is configured so that air flowing along the elliptical arc can be easily discharged, the exhaust port shape can be formed without changing the area of the exhaust port and without deteriorating the external appearance.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a main body formed in an elliptical cylindrical shape, 2 denotes an inner pot, 3 denotes an inner container that holds the inner pot 2, 4 denotes a lid that can be opened and closed via a hinge 5, 6 denotes electromagnetic induction heating A coil is provided on the bottom rear surface of the inner container 3. Reference numeral 7 denotes a support frame, and a motor 8 is fixed to one end of a long diameter of the main body 1 of the support frame 7 in an elliptical shape. The rotating shaft 9 of the motor 8 faces downward, and a cooling fan 10 is attached. Reference numeral 11 denotes an intake port, and the main body 1 faces the cooling fan 10.
Is provided on the bottom surface of the. Reference numeral 12 denotes a control board,
Electronic component 1 fixed along the elliptical arc of
3 and the radiation fins 14 are thermally coupled and arranged. An exhaust port 15 is provided on the side opposite to the intake port 11 in the major axis direction of the elliptical shape of the main body 1.

The operation of this embodiment having the above-described configuration will be described.

Put the ground rice and an appropriate amount of water into the inner pot 2
When the rice cooker (not shown) is pressed, the rice cooking is started. That is, the electromagnetic induction heating coil 6 is energized by the switching operation of the electronic component 13 on the control board 12, and the bottom of the inner pot 2 generates heat to heat rice and water.
Since a large current flows through the electromagnetic induction heating coil 6 via the electronic component 13, the electromagnetic induction heating coil 6 and the electronic component 13
Generates heat and becomes high temperature. During the rice cooking, the motor 8 is also energized to rotate the cooling fan 10, so that air is sucked in from the air inlet 11 and hits the motor 8 and the support frame 7, and the air flows along the rotation direction of the cooling fan 10.

A part of the flow of the sucked air goes directly to the exhaust port 15 of the main body 1 while cooling the electromagnetic induction heating coil 6 in the middle as shown by a and b. A part of the flow of the air is guided by the elliptic arc of the main body 1 as shown by c, d, and e, and becomes a flow f of the merged air, which is a flow along the elliptical arc on the side surface of the main body 1. Since the control board 12 is fixed substantially along the elliptical arc, and the electronic component 13 and the heat radiation fin 14 thermally coupled to the electronic component 13 are arranged in the air flow f, the airflow f goes to the exhaust port 15 while cooling these components. Air flow a, b
And is discharged out of the main body 1.

FIG. 3 shows another embodiment, in which the main body 1 has a substantially elliptical cylindrical shape.

It should be noted that the present invention is not limited to the embodiment described above and shown in the drawings, but can be variously modified and implemented without departing from the gist of the present invention.

[0016]

According to the present invention, a cooling fan and an intake port are provided on one side of an elliptical major axis direction of a main body formed into an elliptical cylinder, and an exhaust port is provided on the other side, and an elliptic arc between the intake port and the exhaust port is formed. Since the electronic components, which are relatively high in temperature, are arranged almost in line, the body itself has a rectifying effect of air and can be cooled efficiently, the cooling fan can be set to a small diameter or low rotation speed, and no noise is generated. It is possible to provide a rice cooker which does not need to adjust the area to adjust the flow of air and does not impair the aesthetic appearance.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view of a rice cooker showing one embodiment of the present invention.

FIG. 2 is a diagram showing a flow of air.

FIG. 3 is a view showing another embodiment, and is a schematic sectional view as seen from below the inside of the main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Inner pot 3 Inner container 6 Electromagnetic induction heating coil 10 Cooling fan 11 Intake port 15 Exhaust port

Claims (1)

(57) [Scope of request for utility model registration] A cooling fan (10) and an air inlet (11) are provided on one side of the main body (1) formed in a substantially elliptical cylindrical shape in the major axis direction of the ellipse.
And the other side is provided with an exhaust port (15), and the intake port (1
A rice cooker characterized by disposing an electronic component (13) having a high temperature substantially along an elliptical arc between (1) and an exhaust port (15).