JP4964175B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device such as a microwave oven or an electric oven.

  In the conventional cooking device, the inner wall of the heating chamber is covered with a ceramic plate, and the temperature distribution in the heating chamber is made uniform while preventing heat dissipation to the outside, and the object to be heated is wrapped and heated uniformly. (For example, see Patent Document 1).

JP 2001-355852 A (2nd page, FIG. 1)

In the conventional cooking device according to Patent Document 1, a ceramic plate is fixed with a pressing metal from the inside of the heating chamber, and a part of the pressing metal is exposed in the heating chamber. Moreover, since it was fixed with metal fittings, it was not easy to remove the ceramic plate.
In such a heating cooker, when cooking is repeated, oil, smoke, or filth scattered from the cooked material adheres to the ceramic plate, and when cooking is performed in this state, the filth is baked on the ceramic plate. It becomes difficult to fall. In order to remove the attached filth, it is necessary to insert a hand directly into the heating chamber and wipe it with a cloth, etc., but it was difficult to clean the corners by putting a hand in the cabinet, and the filth did not drop sufficiently. . And if high-frequency heating cooking is performed in a state where filth is adhered, there is a risk of sparks.

  The present invention has been made in order to solve the above-described problems, such as high-frequency cooking, oven cooking, oil smoke or steam generated when cooking using superheated steam, or contamination scattered from an object to be heated. It is an object to provide a cooking device that can easily remove an object even when it adheres to the inner wall surface of the heating chamber, particularly a ceramic plate, and does not cause a problem in cleanability and safety. To do.

A heating cooker according to the present invention is a heating cooker provided with a heating chamber for storing a cooked food, heating means for heating the cooked food in the heating chamber, and ceramic plates covering both side surfaces of the inner wall surface of the heating chamber. The guide convex portions are formed in the longitudinal direction of the top plate and the bottom plate constituting the inner wall surface of the heating chamber, and the entire inner surface of the side plate is formed between the guide convex portion and the side plate constituting the inner wall surface of the heating chamber. The covering ceramic plate is detachably sandwiched .

Even when the ceramic plate in the heating chamber becomes dirty, the ceramic plate itself can be removed and washed, so that the cleanability is improved . Moreover, since so as to cover the entire area of the side plate inner surface which constitutes the inner wall surface of the heating chamber in the ceramic plate, it is possible to clean retain the entire area of the side plate inner surface which constitutes the inner wall surface of the heating chamber, the spark It does not generate and is safe. Moreover, even if the ceramic plate is accidentally damaged, it can be easily replaced, and the serviceability is excellent.

Embodiment 1 FIG.
1 is a longitudinal sectional view of a heating cooker according to Embodiment 1 of the present invention, FIG. 2 is an enlarged sectional view of a portion of FIG. 1, FIG. 3 is a sectional view taken along line AA in FIG. It is a disassembled perspective view of the principal part of 1. FIG.
In the figure, a heating chamber 2 having an open front surface (front side in FIG. 1) is provided inside the heating cooker body 1. The inner wall of the heating chamber 2 includes a top plate 3 constituting the top surface, a bottom plate 4 constituting the bottom surface, a left side plate 5 and a right side plate 6 constituting left and right side surfaces, and a back plate constituting the back surface (see FIG. These are formed of a metal plate such as an aluminized steel plate.

  The bottom plate 4 of the heating chamber 2 is formed in two dents, and a lower electric heater 7 such as a sheathed heater for heating the cooked food (food) is provided in the lower large dent 4b. The top plate 3 of the heating chamber 2 is provided with an upper electric heater 8 for heating the cooked food, and a hot air generating unit (not shown) for cooking by circulating hot air on the back side of the heating chamber 2. ) Is attached.

A partition plate 9 made of a non-dielectric member such as ceramic is fixed to the recessed portion 4a on the upper side of the bottom plate 4 with an adhesive such as silicon.
A waveguide 10 is attached to the lower surface of the large recessed portion 4 b below the bottom plate 4, and a magnetron 11 that oscillates high frequency to heat food is screwed to the waveguide 10, and oscillates from the magnetron 11. The radio wave thus guided is guided into the heating chamber 2 by the waveguide 10. A motor 12 is fixed to the waveguide 10 and rotationally drives a rotating antenna 13 for radiating radio waves into the heating chamber 2.

The bottom plate 4 is provided with bottom plate guide convex portions 40 protruding in a rail shape in the front-rear direction on both the left and right sides (the front-rear direction in FIG. 1). The plate guide convex part 30 is provided in the front-back direction (front-back direction of FIG. 1) of both right and left sides.
The bottom plate guide convex portion 40 or the top plate guide convex portion 30 may be a combination of short rails provided at a plurality of positions in the front-rear direction, for example, two positions (see FIG. 5).
Further, the bottom plate guide convex portion 40 or the top plate guide convex portion 30 is bent at the front side (front side in FIG. 1) to the heating chamber 2 side to form a bent portion 40a, and a ceramic plate (described later) is inserted. It may be easy (see FIG. 6).

  On the left side plate 5 side of the heating chamber 2, a ceramic plate 14 (a ceramic plate located on the left side in FIG. 1) whose vertical direction and front-rear direction (depth direction) are substantially the same length as the left side plate 5 is disposed. 2 and is sandwiched between a convex portion 5a projecting in a U-shape above and below the left side plate 5, and a top plate guide convex portion 30 of the top plate 3 and a bottom plate guide convex portion 40 of the bottom plate 4, as shown in FIG. The width a between the sandwiched objects is formed to be substantially equal to the thickness width b of the ceramic plate 14 so that no play occurs when the ceramic plate 14 is sandwiched.

  The ceramic plate 14 may be integrally formed with a guide portion 14a that is inclined downward toward the heating chamber 2 and covers the bottom plate guide convex portion 40 from above (see FIG. 7). If it carries out like this, when the water droplet and dirt which adhered to the ceramic board 14 at the time of cooking will flow below, it can guide to the partition plate 9 side.

  A ceramic plate 15 is also disposed on the right side plate 6 side of the heating chamber 2, but the description is omitted because it has the same structure as the ceramic plate 14 on the left side plate 5 side (see FIG. 1).

Ceramic plates 14, 15, mullite, in cordierite-based ceramic, silicon oxide (Si0 _2), aluminum oxide (AL ₂ O _3), magnesium oxide (MgO), is configured as a main component, such as zirconium oxide (ZrO ₂₎ ing. Also, pottery, natural stone, crystallized glass and the like can be used. In addition, a coating that makes it difficult to attach dirt, water droplets, or the like, such as a fluorine coating, may be applied to at least the surface of the ceramic plates 14 and 15 on the heating chamber 2 side.

  Shelves 14b and 15b are integrally formed on the ceramic plates 14 and 15 on the heating chamber 2 side, and a cooking dish 16 on which food is placed and cooked is placed.

  In the above description, the case where the ceramic plate is provided on the left and right side plates 5 and 6 side of the heating chamber 2 has been described. However, the ceramic plate may be provided on the top plate 3 side or the bottom plate 4 side.

The operation of the cooking device configured as described above will be described.
The door (not shown) of the heating cooker shown in FIG. 1 is opened, the food is placed on the cooking pan 16, and the door is closed. When the switch is turned on, a high frequency is oscillated from the magnetron 11, and a radio wave is radiated into the heating chamber 2 by the rotating antenna 13 that is rotationally driven by the motor 12 through the waveguide 10, and the cooked food is cooked.
When cooking is repeated as described above, oil, smoke, or filth scattered from the cooked product adheres to the inner wall surface of the heating chamber 2, particularly the left and right ceramic plates 14 and 15.
When cleaning dirt and the like, the left and right ceramic plates 14 and 15 sandwiched between the left and right side plates 5 and 6 and the bottom plate guide convex portion 40 and the top plate guide convex portion 30 are placed in front (the front side in FIG. 1). ), Cleaned outside, and returned to the heating chamber 2 again.

  According to the first embodiment, since the left and right ceramic plates 14 and 15 of the heating chamber 2 are easy to remove, it is easily cleaned even if oily smoke, steam, dirt, etc. generated by cooking adhere to the ceramic plates 14 and 15. be able to. By keeping it clean in this way, the occurrence of sparks in the heating chamber 2 can be prevented, and it is safe and has a long life.

  In addition, since the left and right ceramic plates 14 and 15 have the same shape, the parts can be made common and the cost can be reduced, and when they are attached again after being removed, erroneous insertion in the left and right and front and rear directions can be prevented.

  Further, even if the ceramic plates 14 and 15 are accidentally damaged, they can be easily replaced, so that serviceability can be improved.

Embodiment 2. FIG.
8 is a longitudinal sectional view of a heating cooker according to Embodiment 2 of the present invention, FIG. 9 is a side view of the main part of FIG. 8, and FIG. 10 is a perspective view of FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In FIG. 8, a lower surface convex portion 14 c (protruding lower surface convex portion) protruding downward is integrally formed on the lower surface of the ceramic plate 14 (see FIGS. 9 and 10). A bottom plate concave portion 41 is formed at a position facing the lower surface convex portion 14c. Then, the lower surface convex portion 14 c of the ceramic plate 14 is fitted into the bottom plate concave portion 41 of the bottom plate 4 to fix the position of the ceramic plate 14. The shape of the lower surface protrusion 14c and the bottom plate recess 41 is, for example, a substantially hemispherical protrusion and recess. At this time, a gap (vertical distance) between the top plate 3 and the upper surface of the ceramic plate 14 is set to be larger than the height of the lower surface convex portion 14 c of the ceramic plate 14.

  On the front side of the ceramic plate 14, there are, for example, two places in the vertical direction, which are auxiliary parts 140 for assisting in and out of the heating chamber 2. (See FIGS. 9 and 10).

Further, the ceramic plate 14 is provided with a mark 141 such as an arrow by engraving or printing (see FIGS. 9 and 10) so that the insertion position is not mistaken when the ceramic plate 14 is removed.
Although the ceramic plate 15 is similarly disposed on the right side plate 6 side of the heating chamber 2, the structure is the same as that of the ceramic plate 14 on the left side plate 5 side, and the description thereof is omitted.

  According to the second embodiment, in addition to the effects shown in the first embodiment, the left and right ceramic plates 14 and 15 are provided with the lower surface convex portions 14c and 15c, and the bottom plate 4 has the bottom plate concave portions on the left and right in correspondence thereto. Since 41 is provided, there is no deviation when the ceramic plates 14 and 15 are incorporated into the heating chamber 2, rattling is reduced, and stability is improved. Furthermore, since the handle portions 140 are provided on the ceramic plates 14 and 15, the attachment and detachment is excellent, and the mark 141 such as an arrow is provided so that erroneous insertion can be prevented.

Embodiment 3 FIG.
FIG. 11 is a longitudinal sectional view of a heating cooker according to Embodiment 3 of the present invention, and FIG. 12 is a side view of the main part of FIG. In addition, the same code | symbol is attached | subjected to the same part as this Embodiment 1, and description is abbreviate | omitted.
In the second embodiment, the bottom surface convex portions 14c and 15c are provided on the lower surfaces of the left and right ceramic plates 14 and 15, respectively, and the bottom plate 4 is provided with the bottom plate concave portion 41. In the third embodiment, however. The lower surface convex part formed in the rail shape and the bottom surface concave part corresponding to it are provided. In the second embodiment, the left and right ceramic plates 14 and 15 are provided with the handle 140 on the front side, but in the third embodiment, the left and right ceramic plates 14 and 15 are provided on both the front side and the rear side. Further, in the second embodiment, the bottom plate guide convex portion 40 is provided on the bottom plate 4, but in the third embodiment, the bottom plate guide convex portion 40 is not provided.

11 and 12, the bottom surface of the left ceramic plate 14 is provided with a rail-like lower surface convex portion 14d continuous in the front-rear direction (the front-rear direction in FIG. 11, the left-right direction in FIG. 12). Is provided with a bottom plate recess 41 at a position facing the bottom projection 14d, and the bottom projection 14d is fitted in the bottom plate recess 41 and slides in the front-rear direction.
Furthermore, as shown in FIG. 12, the left ceramic plate 14 is provided with handle portions 140 and 142 on both the front side and the back side. In this case, as in the second embodiment, a mark 141 such as an arrow may be provided. However, when this is not provided, the ceramic plates 14 and 15 can be used on either side.
A ceramic plate 15 is also disposed on the right side plate 6 side of the heating chamber 2, but the description is omitted because it has the same structure as the left ceramic plate 14.

  According to the third embodiment, in addition to the effects shown in the first embodiment, rail-like lower surface convex portions 14d and 15d are provided on the bottom surfaces of the left and right ceramic plates 14 and 15, and the bottom plate 4 is opposed to the bottom plate 4. Since the bottom plate recesses 41 are provided on the left and right sides, the ceramic plates 14 and 15 can be smoothly inserted into the heating chamber 2 and are excellent in detachability. In addition, since the lower surface protrusions 14d and 15d have a rail shape, it is not necessary to provide the guide protrusions 40 (see FIG. 8) for preventing the bottom plate 4 from moving in the left-right direction (left-right direction in FIG. 11). It becomes the composition which did. Further, since the handle portions 140 and 142 are provided on the front side and the back side without providing the mark 141 on the ceramic plates 14 and 15, the ceramic plates 14 and 15 can be inserted and attached to either the left or right side. it can. Thus, the cleanability of the ceramic plates 14 and 15 is further improved.

Embodiment 4 FIG.
FIG. 13 is a longitudinal sectional view of a heating cooker according to Embodiment 4 of the present invention, FIG. 14 is an enlarged sectional view of the portion B of FIG. 13, and FIG. 15 is an exploded perspective view of the main part of FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the figure, a cushioning material 17 made of, for example, silicone is provided in an annular shape at the peripheral edge of the ceramic plate 14 so as to cover the entire circumference.
As shown in FIG. 14, the cushioning material 17 has a gap 17 a inside, and when an external force is applied to the cushioning material 17, the cushioning material 17 shrinks by the gap.

The buffer member 17 on the lower surface side of the ceramic plate 14 is integrally formed with a guide portion 17b that is inclined downward toward the heating chamber 2 and covers the bottom plate guide convex portion 40 from above, and moisture transferred through the ceramic plate 14 The dirt is guided to the heating chamber 2 side from the bottom plate guide convex portion 40. Further, the buffer member 17 on the upper surface side of the ceramic plate 14 is integrally formed with a guide portion 17c that is inclined upward toward the heating chamber 2 and covers the top plate guide convex portion 30 from below.
Although the ceramic plate 15 is also disposed on the right side plate 6 side in the heating chamber 2, the structure is the same as the case of the ceramic plate 14, and thus the description thereof is omitted.

As shown in FIG. 15, the ceramic plate 14 is inserted from the center side of the heating chamber 2 to the left plate 5 side. At the time of insertion, when the cushioning material 17 gets over the bottom plate guide convex portion 40, it is distorted by the gap 17a of the cushioning material 17, and when it gets over the bottom plate guide convex portion 40 and is fixed, the gap 17a portion of the cushioning material 17 is originally Return and fix tightly.
The same applies to the ceramic plate 15 on the right side plate 6 side.

  According to the fourth embodiment, since the cushioning material 17 is provided on the peripheral portions of the ceramic plates 14 and 15, the ceramic plates 14 and 15 can be freely attached and detached, and rattling with the heating chamber 2 can be prevented when the ceramic plates 14 and 15 are mounted. can do.

Embodiment 5 FIG.
FIG. 16: is sectional drawing of the principal part of the heating cooker which concerns on Embodiment 5 of this invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In FIG. 16, the cooking pan 160 is formed in a concave shape with a non-dielectric member such as ceramic, such as a high-frequency transmitting material, and is mounted on the partition plate 9 of the heating chamber 2 by being placed on the bottom plate guide convex portion 40. Installed freely. Then, high-frequency heating cooking is performed with the cooking pan 160 placed.
The lower portions of the left and right ceramic plates 14 and 15 are bent in an L shape on the heating chamber 2 side, and the end portion of the L portion 14e (15e is not shown) is formed on the side portion of the bottom plate guide convex portion 40. In the abutted state, the bottom plate guide convex portion 40 is inserted and fixed between the left and right side plates 5 (6 is not shown).

  According to the fifth embodiment, not only the left and right ceramic plates 14 and 15 are detachably attached, but also the cooking plate 160 is detachably attached to the partition plate 9 side of the heating chamber 2. When the heating chamber 2 becomes dirty during cooking, not only the left and right ceramic plates 14 and 15 but also the cooking dish 160 on the bottom surface side can be removed and washed, so that the cleanability is further improved.

It is a longitudinal cross-sectional view of the heating cooker which concerns on Embodiment 1 of this invention. FIG. 2 is an enlarged cross-sectional view of a portion in FIG. 1. It is AA sectional drawing of FIG. It is a disassembled perspective view of the principal part of FIG. It is sectional drawing at the time of making the baseplate guide convex part of the heating cooker which concerns on Embodiment 1 into the combination of a short rail. It is sectional drawing of the principal part at the time of bending the near side of the baseplate guide convex part of the heating cooker which concerns on Embodiment 1 to the heating chamber side. It is sectional drawing of the principal part at the time of providing a guide part in the ceramic plate of the heating cooker which concerns on Embodiment 1. FIG. It is a longitudinal cross-sectional view of the heating cooker which concerns on Embodiment 2 of this invention. It is a side view of the principal part of FIG. FIG. 10 is a perspective view of FIG. 9. It is a longitudinal cross-sectional view of the heating cooker which concerns on Embodiment 3 of this invention. It is a side view of the principal part of FIG. It is a longitudinal cross-sectional view of the heating cooker which concerns on Embodiment 4 of this invention. It is sectional drawing to which the b part of FIG. 13 was expanded. It is a disassembled perspective view of the principal part of FIG. It is sectional drawing of the principal part of the heating cooker which concerns on Embodiment 5 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Heating cooker main body, 2 Heating chamber, 3 Top plate, 4 Bottom plate, 5 Left side plate, 6 Right side plate, 7 Lower electric heater (heating means), 8 Upper electric heater (heating means), 9 Partition plate, 10 Waveguide Tube, 11 Magnetron, 12 Motor, 13 Rotating antenna, 14, 15 Ceramic plate, 14a, 17b, 17c Guide part, 14b Shelf part, 14c, 14d, 15c Bottom convex part, 16, 160 Cooking dish 17 Buffering material, 17a Gap , 30 Top plate guide convex part, 40 Bottom plate guide convex part, 40a Bent part, 41 Bottom plate concave part, 140, 142 Handle part, 141 Mark.

Claims (13)

A heating cooker comprising a heating chamber for storing a cooked product, heating means for heating the cooked product in the heating chamber, and ceramic plates covering both side surfaces of the inner wall surface of the heating chamber,
Guide convex portions are respectively formed in the front-rear direction of the top plate and the bottom plate constituting the inner wall surface of the heating chamber, and the entire inner surface of the side plate is formed between the guide convex portion and the side plate constituting the inner wall surface of the heating chamber. A heating cooker characterized in that the ceramic plate to be covered is detachably sandwiched . Heating cooker of claim 1, wherein the distance between said side plates and said guide projection has substantially equal form to the thickness width of the ceramic plate. The cooking device according to claim 1 or 2, wherein the guide convex portion is formed in a rail shape. Heating according to any one of claims 1 to 3, characterized in that the lower surface convex portion is provided on the lower surface of the ceramic plate, a bottom plate recess that mates with the bottom surface protrusion on the bottom plate of the heating chamber is provided Cooking device. The cooking device according to claim 4, wherein the lower surface convex portion is formed in a protruding shape or a rail shape. The cooking device according to claim 4 or 5 , wherein a distance between an upper surface of the ceramic plate and a top plate constituting an inner wall surface of the heating chamber is made larger than a height of the lower surface convex portion. The cooking device according to any one of claims 1 to 6 , wherein a front side of the guide protrusion is bent toward the heating chamber. The cooking device according to any one of claims 1 to 7 , wherein a handle portion is provided on the near side of the ceramic plate or on the near side and the far side. The cooking device according to any one of claims 1 to 8 , wherein a mark indicating directionality is provided on the ceramic plate. The cooking device according to any one of claims 1 to 3 , wherein a cushioning material is provided at a peripheral portion of the ceramic plate. The cooking device according to any one of claims 1 to 10 , wherein a guide portion is provided on the ceramic plate or the buffer material of the ceramic plate so as to cover the guide convex portion with an inclination. The cooking device according to any one of claims 1 to 11 , wherein a fluorine paint is applied to at least a surface of the ceramic plate on the heating chamber side. The cooking dish formed by the non-dielectric member is provided, in any one of claims 1-10, 12, characterized in that the freely mounted detachably to the guide protrusions of the bottom plate constituting the inner wall surface of the heating chamber The cooking device described.

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