JP2003135266A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker adapted to boil rice in a pot removably stored in a rice cooker body, capable of uniformly heating the pot to prevent uneven boiling and attain good heating efficiency by restraining variation in the vertical dimension between the pot and an induction coil. SOLUTION: The pot 2 is removably housed in the rice cooker body 1. The storing part of the pot 2 is formed by an upper frame 5 and a protective frame 3, an induction coil 10 is disposed on the outer surface of a bottom 9 of the protective frame 3, and an upper peripheral part 6 of the pot 2 is placed to support the pot by a pot support member 8 mounted on an upper end part 7 of the upper frame 5. As the pot support member 8, a plurality of members different in thickness in the vertical direction are previously provided. According to the size in the vertical direction from the upper end part 7 of the upper frame 5 to the bottom 9 of the protective frame 3, the pot support members 8 different in thickness are selected and mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker that cooks rice in a pan that is detachably housed in a rice cooker body.

[0002]

2. Description of the Related Art Conventionally, this type of rice cooker has been constructed as shown in FIG. The configuration will be described below.

As shown in FIG. 9, the rice cooker body 101 is
It is formed into a substantially cylindrical shape, and the storage portion of the pan 102 is formed inside the protective frame bottom portion 103, the protective frame side surface portion 104, and the upper frame 105. The upper frame 105 is the flange portion 10 of the pot 102.
When 6 comes into contact, the pot 102 and the rice and water in the pot 102 1
Holds 07. The lid 108 is the rice cooker body 101.
Covers open and close freely.

The induction coil 109 is arranged outside the bottom 103 of the protective frame so as to face the bottom of the pot 102, and the control board 1
The rice is cooked by controlling energization by 10 and heating the pan 102.

[0005]

However, in such a conventional configuration, the upper frame 105 and the protective frame side surface portion 10 are provided.
4. The vertical dimension of the bottom of the pot 102 and the induction coil 109 varies due to the vertical dimension variation of the protective frame bottom 103 and the pot 102. Pan 102 and induction coil 109
The vertical dimensions of and are important factors for heating the pot 102 uniformly.

That is, if the vertical dimension of the pot 102 and the induction coil 109 is too small, the portion of the pot 102 directly above the induction coil 109 is heated and uneven cooking occurs. On the contrary, if the vertical dimensions of the pan 102 and the induction coil 109 are too large, the heating efficiency of the pan 102 by the induction coil 109 decreases, and the temperature rise of the induction coil 109 and the control board 110 increases. .

The present invention solves the above-mentioned conventional problems, and suppresses variations in the vertical dimensions of the pot and the induction coil to evenly heat the pot to reduce uneven cooking and to improve the heating efficiency. The purpose is to provide a rice cooker.

[0008]

In order to achieve the above-mentioned object, the present invention comprises a rice cooker in which a pan is detachably housed, and the pan is composed of an upper frame and a protective frame. An induction coil is arranged on the outer surface of the bottom of the protective frame, and the pan supporting member provided on the upper end of the upper frame is configured to support the pan by placing the peripheral edge of the upper end of the pan. Different types are prepared in advance, and the pot supporting members having different thicknesses are selected and attached according to the vertical dimension from the upper end of the upper frame to the bottom of the protective frame.

[0009] With this, it is possible to suppress variations in the vertical size of the pan and the induction coil, and to uniformly heat the pan, to provide a rice cooker with less uneven cooking and high heating efficiency. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises a rice cooker main body, a pan detachably housed in the rice cooker main body, and a storage part of the pan together with an upper frame for protection. A frame and an induction coil arranged on the outer surface of the bottom of the protective frame;
A pan supporting member which is provided on the upper end of the upper frame and supports the pan by mounting the peripheral edge of the pan, and the pan supporting member is prepared in advance in a plurality of types having different vertical thicknesses; According to the vertical dimension from the upper end of the to the bottom of the protective frame, it is configured to select and attach pot support members having different thicknesses, due to the vertical dimension variation of the upper frame, the protective frame, the pot, By selecting and attaching pan support members with different thicknesses, it is possible to suppress variations in the vertical dimensions of the pan and the induction coil, and it is possible to heat the pan evenly with less uneven cooking and good heating efficiency. A rice cooker can be provided.

According to a second aspect of the present invention, in the first aspect of the invention, when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is large, the vertical pot is thin. The support member is selected and attached, and it is possible to suppress variations in the vertical dimension of the pot and the induction coil, the pot can be heated uniformly, there is little uneven cooking, and the heating efficiency is good. A rice cooker can be provided.

According to a third aspect of the present invention, in the first aspect of the invention, when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is small, the vertical pot is thick. The support member is selected and attached, and it is possible to suppress variations in the vertical dimension of the pot and the induction coil, the pot can be heated uniformly, there is little uneven cooking, and the heating efficiency is good. A rice cooker can be provided.

According to a fourth aspect of the invention, in the invention according to the first aspect, the pot supporting member has a first longitudinal sectional shape.
A convex shape formed by a wide portion having a height of 2 mm and a narrow portion having a second height, and the vertical cross-sectional shape of the mounting portion of the pot support member of the upper frame is shallower than the first height. It is formed into an inverse convex concave shape formed by a wide portion and a narrow portion whose depth is deeper than the second height, and it is possible to reduce the number of types of pan supporting members prepared in advance having different vertical thicknesses. it can.

According to a fifth aspect of the present invention, in the first aspect of the present invention, concave portions having different shapes are formed on the upper surface of a plurality of pot supporting members having different vertical dimensions. Different pan support members can be easily identified, so the pan support member can be attached to the upper frame without fail, and the vertical direction from the upper edge of the upper frame to the bottom of the protective frame can be used during after-sales service or when the upper frame is replaced. An appropriate pan support member can be supplied without measuring the dimensions of the.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 1, a rice cooker main body 1 is provided with a protective frame 3 which constitutes a storage portion of a pan 2, a protective frame side surface portion 4 and an upper frame 5 therein. There is. The pan 2 is formed of, for example, a clad steel plate having a magnetic material on the outer side and an aluminum inner surface, and a plurality of pan supporting members provided with an upper end peripheral portion 6 formed on the upper end portion on the upper end portion 7 of the upper frame 5. 8
The pot 2 is supported by being brought into contact with.

A plurality of types of pan supporting members 8 having different vertical thicknesses are prepared in advance. When the pan supporting member 8 is attached to the upper frame 5, the pan supporting member 8 is arranged from the upper end portion 7 of the upper frame 5 to the protective frame 3. The vertical dimension up to the bottom 9 is measured, and the upper end 7 of the upper frame 5 is
When the vertical dimension from the bottom to the bottom 9 of the protective frame 3 is small, the pan support member 8 having a large vertical thickness is selected and attached, and the upper end 7 of the upper frame 5 to the bottom of the protective frame 3 is selected. When the vertical dimension up to 9 is large, the pan supporting member 8 having a small vertical thickness is selected and attached.

The pot supporting member 8 and the upper end portion 7 of the upper frame 5 are fixed to each other by a double-sided tape or the like. An induction coil 10 is held on the outer surface of the bottom of the protective frame 3 with the protective frame cover 11. Then, the ferrite 12 is attached to the outer surface of the protective frame cover 11, and the ferrite 12 enhances the inductive coupling to prevent the outside from being magnetized. Further, for example, a heater 13 having coating insulation is attached to the side surface portion 4 of the protective frame.

Further, at the center of the bottom 3 of the protective frame, there is disposed a heat sensitive portion 14 having a built-in thermistor or the like. The temperature of the bottom of the pan 2 is sensed. The temperature information sensed by the heat sensing unit 14 is the electric circuit 16
To control the induction coil 10 and the heater 13. A lid 17 covers the rice cooker body 1 so as to be openable and closable.

In the above structure, it can be understood that the vertical dimension A from the upper end 7 of the upper frame 5 to the bottom 9 of the protective frame 3 varies in the range of 150 mm to 152 mm, for example. The vertical thickness of the pan support member 8 is B =
3.0 mm, B = 3.5 mm, B = 4.0 mm, B =
Four types of 4.5 mm are prepared. When 150 ≦ A <150.5, B = 4.5 ... (1) When 150.5 ≦ A <151, B = 4.0 ...・ (2) When 151 ≦ A ≦ 151.5, B = 3.5 ... ・ (3) When 151.5 <A ≦ 152, B = 3.0 ・ ・ ・ ・ (4) When the supporting members 8 are respectively attached, the dimension C from the pan supporting member 8 supporting the pan 2 with the upper end peripheral portion 6 of the pan 2 supported to the bottom 9 of the protective frame bottom 3 is C = A + B. ), 150 + 4.5 ≦ C <150.5 + 4.5 Therefore, the range of C is 154.5 ≦ C <155. Similarly, in the case of (2), 154.5 ≦ C <155. In the case of (3), 154.5 ≤ C ≤ 155 In the case of (4), 154.5 <C ≤ 155, which varies within a width of 2 mm. With respect to the A dimension, the C dimension can be set to 0.5 mm in width by selecting and attaching the four types of pan supporting members 8 as described above.
Therefore, it is possible to suppress variation in the vertical dimension between the pan 2 and the induction coil 10, and to uniformly heat the pan 2, and it is possible to provide a rice cooker with less uneven cooking and high heating efficiency.

In this embodiment, the protective frame 3 and the protective frame side surface portion 4 are separated, but the protective frame 3 and the protective frame side surface portion 4 may be integrated to obtain the same effect. You can

(Embodiment 2) As shown in FIG. 2, the pan support member 8a has a vertical cross-sectional shape and a wide portion 17 having a first height D.
And has a convex shape formed by the narrow portion 18 having the second height E. The vertical cross-sectional shape of the mounting portion of the pot support member 8a of the upper frame 5a is formed by a wide portion 19 having a depth shallower than the first height D and a narrow portion 20 having a depth deeper than the second height E. It has a convex shape and a concave shape. The other structure is the same as that of the first embodiment.

In the above configuration, FIG. 2 shows a state in which the wide portion 17 of the pan supporting member 8a is attached to the upper portion and the narrow portion 18 is attached to the lower portion of the inverted convex portion of the upper frame 5a.
On the other hand, FIG. 3 shows a state in which the wide portion 17 of the pan supporting member 8a is attached to the lower portion and the narrow portion 18 is attached to the upper portion of the inverted convex portion of the upper frame 5a.

As a result, although the pot supporting member 8a is a single pot, the vertical dimension of the pot supporting member 8a has two kinds of functions.

FIG. 4 shows an upper frame 5a formed so that the wide portion 19 has a depth of 5 mm and the narrow portion 20 has a depth of 2.5 mm, and a wide portion having a first height D = 6.5 mm in a vertical cross section. 17 and a convex pot support member 8a formed by a narrow portion 18 having a second height E = 1 mm, with the wide portion 17 facing upward, the pot support member 8a from the upper surface of the upper frame 5a. The payout amount F is F = 1.5.

FIG. 5 shows a state in which the narrow portion 18 of the pan supporting member 8a is attached to the upper frame 5a with the narrow portion 18 of the pan supporting member 8a facing upward, and the protruding amount F of the pan supporting member 8a from the upper surface of the upper frame 5a is F = 2.5. Becomes

In FIG. 6, a wide portion 17 having a first height D of 6 mm and a second height E of 1 mm are formed on the upper frame 5a.
Of the convex pot support member 8b formed by the narrow portion 18 of
With the wide portion 17 facing upward, the upper frame 5a is attached.
The margin F of the pot support member 8b from the upper surface of F is F = 1.

FIG. 7 shows a state in which the pan supporting member 8b is attached to the upper frame 5a with the narrow portion 18 of the pan supporting member 8b facing upward, and the protruding amount F of the pan supporting member 8b from the upper surface of the upper frame 5a is F = 2.

Therefore, although there are two types of pan support members 8a and 8b, the pan support member 8 from the upper surface of the upper frame 5a is provided.
The payout F of a and 8b is F = 1, F = 1.5, F = 2, F
= 2.5 can be configured.

(Embodiment 3) As shown in FIG. 8, the pot supporting member 8c has a round recess 21 formed on the upper surface thereof.
Here, in FIGS. 8A to 8D, the vertical dimensions of the pan support members 8c are different from each other, and the vertical direction is shown on the upper surface of the plurality of pan support members 8c having different vertical dimensions. 1 to 4 round recesses 21 depending on the size of
Individually formed. The other structure is the same as that of the first or second embodiment.

In the above structure, one to four round recesses 21 are formed on the upper surface of the plurality of pot support members 8c having different vertical dimensions, so that the recesses are formed. It is possible to easily discriminate the pan support member 8 having different vertical dimensions depending on the number of 21. Therefore, the pan support member 8c can be definitely attached to the upper frame 5, and the vertical dimension from the upper end of the upper frame 5 to the bottom 9 of the protective frame 3 can be set at the time of after-sales service or when the upper frame 5 is replaced. An appropriate pan support member 8c can be supplied without measurement.

In this embodiment, the example in which the number of the circular concave portions 21 is changed on the upper surface of the pan supporting member 8c is described, but the concave shape may be, for example, □ or Δ. , The same effect can be obtained.

[0033]

As described above, according to the invention described in claim 1 of the present invention, the rice cooker main body, the pan detachably accommodated in the rice cooker main body, and the storage portion of the pan are the upper frames. A protective frame configured with the same, an induction coil disposed on the outer surface of the bottom of the protective frame, and a pan support member that is provided on the upper end of the upper frame and supports the pan by mounting the upper peripheral edge of the pan, Plural types of pan supporting members having different vertical thicknesses are prepared in advance, and the pan supporting members having different thicknesses are selected and attached according to the vertical dimension from the upper end of the upper frame to the bottom of the protective frame. Therefore, it is possible to suppress variations in the vertical dimensions of the pan and induction coil by selecting and attaching pan support members with different thicknesses depending on the vertical dimensions of the upper frame, the protective frame, and the pan. , You can heat the pan evenly and cook It is possible to provide a less, and good heating efficiency cooker.

According to the second aspect of the present invention, when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is large, a pan supporting member having a small vertical thickness is selected. Since it is configured to be attached, it is possible to suppress variations in the vertical dimension of the pot and the induction coil, it is possible to uniformly heat the pot, and it is possible to provide a rice cooker with less uneven cooking and good heating efficiency. .

According to the third aspect of the invention, when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is small, a pan support member having a large vertical thickness is selected. Since it is configured to be attached, it is possible to suppress variations in the vertical dimension of the pot and the induction coil, it is possible to uniformly heat the pot, and it is possible to provide a rice cooker with less uneven cooking and good heating efficiency. .

According to the invention described in claim 4, the pan supporting member has a longitudinal cross-sectional shape of a wide portion having a first height and a second portion.
And a narrow portion of the height of the upper frame, the vertical cross-sectional shape of the mounting portion of the pot support member of the upper frame, the depth is shallower than the first wide portion and the depth is the second portion. Since the shape of the reverse convex shape formed in the narrower part deeper than the height of the pan It is possible to suppress variations in the vertical dimension between the bottom of the pot placed in contact with the induction coil held on the outer surface of the bottom of the protective frame.

Further, according to the invention described in claim 5, since the concave portions having different shapes are formed on the upper surfaces of the plurality of pot supporting members having different vertical dimensions, the pot supporting members having different dimensions can be easily formed. Since it can be distinguished, when attaching the pan support member to the upper frame, the pan support member can be definitely attached to the upper frame, and from the upper edge of the upper frame to the bottom of the protective frame at the time of after-sales service or when the upper frame is replaced. An appropriate pot support member can be supplied without measuring the vertical dimension.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a rice cooker according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of the main part of the rice cooker with the pan support member installed upside down.

FIG. 4 is a sectional view of an essential part of the rice cooker with an example of a pan support member attached.

FIG. 5 is a cross-sectional view of the main part of the rice cooker with the pan support member installed upside down.

FIG. 6 is a cross-sectional view of the main part of the rice cooker with another example of the pan support member attached.

FIG. 7 is a cross-sectional view of the main part of the rice cooker with the pan support member installed upside down.

FIG. 8 (a) is a perspective view of an example of a pot supporting member of a rice cooker according to a third embodiment of the present invention (b) is a perspective view of another example of a pot supporting member of the rice cooker (c) the rice cooker (D) Perspective view of another example of the pot support member of the rice cooker

FIG. 9 is a partially cutaway sectional view of a conventional rice cooker.

[Explanation of symbols]

1 rice cooker body 2 pots 3 protection frame 5 Upper frame 6 upper edge 7 Upper end 8 Pan support member 9 bottom 10 induction coil

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuru Yashima             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Akihiro Shinabe             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Kazuhiro Ukita             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 4B055 AA09 BA63 CA09 CA68 CC43

Claims (5)

[Claims] 1. A rice cooker main body, a pan that is detachably stored in the rice cooker main body, a protective frame that constitutes the storage part of the pan together with an upper frame, and a guide provided on the outer surface of the bottom of the protective frame. A coil and a pot support member provided on the upper end of the upper frame to support the pot by placing the upper end peripheral portion of the pot, the pot support member is prepared in advance in a plurality of types having different vertical thicknesses, A rice cooker configured to select and attach pan supporting members having different thicknesses depending on the vertical dimension from the upper end of the upper frame to the bottom of the protective frame. 2. The rice cooker according to claim 1, wherein when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is large, a pan supporting member having a small vertical thickness is selected and attached. . 3. The rice cooker according to claim 1, wherein when the vertical dimension from the upper end of the upper frame to the bottom of the protective frame is small, a pan supporting member having a large vertical thickness is selected and attached. . 4. The pot supporting member has a vertical cross-sectional shape that is a convex shape formed by a wide portion having a first height and a narrow portion having a second height, and a mounting portion of the pot supporting member of the upper frame. 2. The rice cooker according to claim 1, wherein the vertical cross-sectional shape is a reverse convex concave shape formed by a wide portion having a depth shallower than the first height and a narrow portion having a depth deeper than the second height. . 5. The rice cooker according to claim 1, wherein concave portions having different shapes are formed on the upper surfaces of the plurality of pot supporting members having different vertical dimensions.