JP2874264B2 - Induction heating cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electromagnetic induction heating type induction heating cooker used in ordinary households.

2. Description of the Related Art In recent years, cookers of the electromagnetic induction heating type have become widespread.

Conventionally, this type of cooker generally has a configuration as shown in Japanese Utility Model Laid-Open No. 33193/1987. Hereinafter, the configuration will be described with reference to FIG. As shown in the figure, a heating coil 3 is fixed below a top plate 2 on which a pan 1 to be heated is placed, and a control board 4 is located below the heating coil 3. The plate 5 was fixed to prevent a rise in the temperature of the floor surface and a magnetic flux leaking from the heating coil 3. Further, the temperature detection of the heated pan 1 was performed via the top plate 2 by one heat-sensitive element 6 located at the center of the heating coil 3.

Further, in order to suppress a rise in the temperature inside the main body 7, the cooling fan 8 is rotated to allow external air to enter through one suction port 9 and emit heated air from the other exhaust port 10.

Problems to be Solved by the Invention In such a conventional cooking device, since the heated pan 1 heated by the heating coil 3 is placed on the upper surface of the top plate 2 having a smooth surface made of ceramic, cooking is performed. During,
When the cooked food put into the heated pot 1 is stirred, the cooked pot 1 moves every time it is stirred. In the worst case, the heated pot 1
There was a problem that the food dropped off the top plate 2 and spilled food, and the user was burned. Furthermore, if the user handles the pot 1 made of metal or ceramic on the top plate 2 violently, the top plate 2 made of ceramic may be damaged or the end face may be damaged. Was. Further, in the case of the heated pot 1 made of pottery, the bottom surface of the heated pot 1 may be damaged.

The present invention solves the above-mentioned problems. Even when stirring the food put into the heated pan 1 during cooking, it does not move every time the heated pan 1 is agitated and is easy to cook. It is a first object of the present invention to provide an induction heating cooker in which the top plate 2 is not damaged even if a person handles it a little violently.

A second object is to provide an induction heating cooker in which the pan 1 to be heated is securely fixed and both the top plate 2 and the pan 1 to be heated are not damaged irrespective of the handling method of the user.

Means for Solving the Problems In order to achieve the above object, the present invention provides a first means,
A heating coil, a flat top plate covering an upper surface of the heating coil, and a convex rib extending downward at an outer periphery of a bottom of the heated pot placed on the upper surface of the top plate; A rubber sheet is adhered to the inside and the bottom of the pan, and the heated pan is locked by engaging the outer peripheral portion of the top plate with the rubber sheet.

The second means includes a heating coil, a flat plate-shaped top plate covering the upper surface of the heating coil, a convex rib extending downward around an outer periphery of a bottom portion of the heated pan placed on the upper surface of the top plate, A concave portion provided on a part of an outer side of the rib; the entire convex rib is covered with a rubber sheet; and one end of the rubber sheet is fixed to a heated pan which is engaged with the concave portion.

Effect of the Invention The cooking device of the present invention has the above configuration, in which the rubber sheet is fixed to a portion where the convex rib extending downward on the outer periphery of the bottom of the heated pot and the outer peripheral end of the top plate are fixed, thereby heating the cooking pot. When the pot is placed on the ceramic top plate, the end of the top plate engages with the rubber sheet fixed to the convex rib of the heated pot, so that the rubber sheet serves as a cushion and Even if an impact is applied, the end face of the top plate is not damaged. Furthermore, by engaging the convex rib with the outer peripheral end of the top plate,
The pot to be heated can be temporarily fixed, and even if the food put into the pot to be heated is stirred during cooking, the pot does not move every time the pot to be heated is stirred, which makes cooking easier.

In addition, a concave portion is provided on a part of the outside of the convex rib extending downward at the outer periphery of the bottom of the heated pot placed on the top plate upper surface, the entire convex rib is covered with a rubber sheet, and one end of the sheet is covered with the one end. The sheet is fixed to the heated pan by engaging with the concave portion, and the sheet does not easily fall off the heated pan during use. Furthermore, since the entire convex rib is covered with the rubber sheet, even if the user accidentally hits the convex rib on the top plate, the rubber sheet serves as a cushion and can prevent damage to the top plate. When the heated pan is placed on the ceramic top plate, the end of the top plate engages with the rubber sheet fixed to the convex rib of the heated pan, so that the rubber sheet becomes a cushion and becomes heated. Even if an impact is applied to the pot, the end face of the top plate is not damaged. In addition, the heated ribs can be temporarily fixed by engaging the convex ribs with the outer peripheral edge of the top plate, and even if the cooked material put into the heated pan is agitated during cooking, the heated pan is agitated. It does not move every time it is done, making cooking easier.

Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

As shown in the figure, a cooked pot that puts food and cooks
The heating coil 11 is heated by a magnetic flux generated from the heating coil 12, and the heating coil 12 is insulated by a ceramic top plate 13 covering the upper surface. A cylindrical heat-sensitive portion 16 made of a metal (for example, made of aluminum) having good heat conductivity and penetrating substantially at the center of the top plate 13 and projecting upward from the upper surface of the top plate 13, and including a heat-sensitive element 15 therein, Provided on a control board 17, the temperature of the heated pot 11 is sensed by the heating unit 16 being in contact with the bottom surface of the heated pot 11. A convex rib 18 extending downward is provided on the outer periphery of the bottom of the heated pot 11, and a rubber sheet 19 is adhered to the inside and the bottom of the convex rib 18, so that the outer peripheral portion of the top plate 13 is provided.
20 through the rubber sheet 19, the convex ribs 18 of the heated pan 11
The heated pan 11 is temporarily fixed to the main body 21, and a gap portion 22 is provided between the heated pan 11 and the top plate 13 by the thickness of the rubber sheet 19. Is formed.

Further, the magnetic flux of the heating coil 12 is controlled by a high-frequency control board 17 located below, and the thermosensitive element 15 is connected to the high-frequency control board 17, and performs temperature adjustment and heating power adjustment in conjunction with the adjustment switch 23. . When the heated pan 11 is heated, the temperature in the high-frequency control board 17 and the inside of the main body 21 rises, so that by rotating the cooling fan 24, the outside air is taken in from the air inlet 25 provided in the main body 21 and exhausted. The inside of the main body 21 is cooled by exhausting heated air from the port 26.

The operation of the above configuration will be described.By fitting the convex ribs 18 provided on the heated pan 11 to the outer peripheral portion 20 of the top plate 13, a rubber sheet provided on the inner side and the bottom surface of the convex ribs 18 is provided. Since the heated pan 11 is temporarily fixed to the main body 21 via 19, even if the cooked food put into the heated pan 11 is agitated during cooking, the heated pan 11 has a smooth surface every time it is agitated. It does not move inadvertently on the ceramic top plate 13 in the horizontal direction, makes it safe and facilitates cooking. In addition, since the heated pot 11 and the top plate 13 are not in direct contact with each other through the rubber sheet 19, and the rubber sheet 19 serves as a cushion,
Even on the top plate 13, the outer peripheral portion 20 of the ceramic top plate 13 is not damaged, and no impact noise is generated. Further, the object to be heated is the same as the thickness of the rubber sheet 19.
Since a gap 22 is formed between the heating plate 11 and the top plate 13, the heat generated in the heated pan 11 is not directly transmitted to the top plate 13 due to the magnetic flux generated from the heating coil 12, and the temperature of the top plate 13 rises. Can be prevented, and the inside of the main body 21 provided with the heating coil 12, the high-frequency control board 17, and the like, which is vulnerable to high temperatures, can be protected from heat. Further, high frequency vibration is generated in the heated pot 11 by the magnetic flux generated from the heating coil 12, but the rubber sheet 19 can prevent abnormal noise such as chatter between the heated pot 11 and the top plate 13. .

Next, a second embodiment of the present invention will be described with reference to FIG.

The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in the figure, a concave portion 31 is provided on the outer peripheral side of the convex rib 30 provided on the bottom of the heated pan 11, and covers the lower surface of the convex rib 30 and the inner peripheral surface of the convex rib 30 and the bottom of the heated pan 11. A rubber sheet provided with an inner peripheral piece 32 which is in close contact with a part of the convex rib 30 and an engaging piece 33 which is in close contact with the outer peripheral surface of the convex rib 30 and engages with a concave portion 31 provided on the outer peripheral side of the convex rib 30. 34, the engaging piece 33 of the rubber sheet 34 is engaged with the concave portion 31 provided on the outer peripheral side of the convex rib 30 of the heated pan 11 to wrap the entire convex rib 30 by the rubber sheet 34, and In this configuration, the sheet 34 is fixed to the pan 11 to be heated.

The operation of the above configuration will be described.
Heats the rubber sheet 34 by wrapping the whole convex rib 30 of the heated pot 11 and engaging the engaging piece 33 of the rubber sheet 34 with the concave portion 31 provided outside the convex rib 30 of the heated pot 11. A rubber sheet that wraps the entire convex rib 30 even if the user accidentally drops the heated pan 11 on the top plate 13 because it is fixed to the pan 11 so that it does not easily fall off during use. There is no danger that the top plate 13 made of ceramic will break due to the cushion 34. Further, the convex rib 30 of the heated pan 11 is provided on the outer peripheral portion 20 of the top plate 13 via a rubber sheet 34.
The heated pan 11 can be temporarily fixed to the main body 21 by the engagement, and during cooking, even if the food put in the heated pan 11 is agitated, the heated pan 11 has a smooth surface every time the heated pan 11 is agitated. It does not move inadvertently on the ceramic top plate 13 in the horizontal direction, making it easier to cook safely. Further, since the gap 22 is formed between the heated pot 11 and the top plate 13 by the thickness of the rubber sheet 34, the heat generated in the heated pot 11 is directly transferred to the top plate by the magnetic flux generated from the heating coil 12. 13, the temperature of the top plate 13 can be prevented from rising, and the heating coil 12
The inside of the main body 21 provided with the high-frequency control board 17 and the like can be protected from heat. Further, high-frequency vibration is generated in the heated pot 11 by the magnetic flux generated from the heating coil 12, but the rubber sheet 34 can prevent abnormal noise such as chatter between the heated pot 11 and the top plate 13.

Effect of the Invention As is clear from the above embodiments, according to the present invention, the heated pan is temporarily fixed to the top plate via the rubber sheet provided on the heated pan, so that the heated pan can be cooked during cooking. Even when the cooked food is stirred, the cooked pot is not moved every time the heated pot is stirred, and cooking is facilitated.

In addition, the rubber sheet reduces the impact between the heated pan and the top plate, and can provide an easy-to-use induction heating cooker capable of preventing breakage of both.

[Brief description of the drawings]

FIG. 1 is a sectional view of an induction heating cooker according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of a main part of the induction heating cooker,
FIG. 3 is a sectional view of an induction heating cooker according to a second embodiment of the present invention, and FIG. 4 is a sectional view of a conventional induction heating cooker. 11 ... Heated pot, 12 ... Heating coil, 13 ... Top plate, 18,30 ... Convex rib, 19,34 ... Rubber sheet, 20 ...
... outer peripheral part, 31 ... concave part, 33 ... engaging piece.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05B 6/12

Claims (2)

(57) [Claims] 1. A heating coil, a flat top plate that covers an upper surface of the heating coil, a heated pot placed on the upper surface of the top plate, and a convex rib extending downward around an outer periphery of a bottom of the heated pot. A rubber sheet is provided over the inside of the convex rib and a part of the bottom surface of the heated pan, and the heated pan is engaged with the outer periphery of the top plate via the rubber sheet to lock the heated pan. Induction heating cooker. 2. A heating coil, a flat top plate covering the upper surface of the heating coil, a pot to be heated placed on the top plate, and a convex rib extending downward on the outer periphery of the bottom of the pot to be heated. A concave portion provided on the outer peripheral side of the convex rib;
A rubber sheet wrapping the entire convex rib, an engagement piece is provided on the rubber sheet, the engagement piece is engaged with a concave portion of the convex rib, and the rubber sheet is locked on the heated pan. An induction heating cooker in which a heated pan is locked to the top plate via a rubber sheet.