Heat cooker

Abstract

To provide a heat cooker that can prevent erroneous insertion of a square plate 8 into a heating chamber 4.SOLUTION: A heat cooker includes: a door for opening and closing a front face of a body 10 and through which a food product enters and exits a heating chamber 4; a rotary antenna for radiating a microwave for heating a food product into the heating chamber 4; an antenna chamber for accommodating the rotary antenna; a partition plate 5 made of a borosilicate glass and partitioning between the antenna chamber and the heating chamber 4; and a protrusion 3 provided in a left side plate 4a of the heating chamber 4 and in a height h2 that is lower than a height h1 of a flange part 8c of a square plate 8 when the square plate 8 is placed on the partition plate 5.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a cooking appliance.

Background Art

[0002] As a conventional cooking appliance, Patent Document 1 describes a cooking appliance that uses borosilicate glass for a partition plate that separates an antenna chamber and a heating chamber for storing food.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the cooking appliance described in Patent Document 1, when the square dish (oven dish), which is an accessory of the cooking appliance, is mistakenly inserted onto the partition plate made of borosilicate glass and heated in the range, the borosilicate glass may crack.

Means for Solving the Problems

[0005] The cooking appliance of the present invention includes a door that opens and closes the front surface of the main body and allows food to be put in and taken out of the heating chamber, a rotary antenna that radiates microwaves for heating the food into the heating chamber, an antenna chamber that houses the rotary antenna, and a partition plate made of borosilicate glass that separates the antenna chamber and the heating chamber. The cooking appliance is provided on at least one of the side wall surfaces of the heating chamber and has a convex portion at a position lower than the height of the side portion of the oven dish when the oven dish is placed on the partition plate.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

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Figure 8

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Embodiments for Carrying Out the Invention

[0007] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following single embodiment, and different embodiments can be combined with each other or arbitrarily modified within a range that does not significantly impair the effects of the present invention. Also, the same members are denoted by the same reference numerals, and overlapping explanations are omitted. Furthermore, those having the same function are given the same name.

[0008] (First Embodiment) FIG. 1 is a perspective view of the cooking device according to the first embodiment as seen from the front side, and FIG. 2 is a sectional view taken along line II-II of FIG. 1. Note that FIG. 2 shows the state where the door 1 is removed (the same applies to FIGS. 3, 4, and 6). As shown in FIG. 1, the cooking device 100 according to the first embodiment includes a main body 10 and a door 1 that opens and closes the front surface of the main body 10. A handle 2 is provided at the upper part of the door 1.

[0009] As shown in FIG. 2, the main body 10 includes a heating chamber 4 for heating food. Further, a rectangular opening 10a is formed in the front surface of the main body 10. The heating chamber 4 is surrounded by a left side plate 4a (one surface, side wall surface) that constitutes the left side wall surface in the left - right direction, a right side plate 4b (one surface, side wall surface, see FIG. 3) that constitutes the right side wall surface in the left - right direction, a rear plate 4c (one surface, side wall surface) that constitutes the rear (back) side wall surface in the front - rear direction, an upper plate 4d (see FIG. 6) that constitutes the upper wall surface in the up - down direction, and a partition plate 5 that constitutes the bottom wall surface in the up - down direction. The partition plate 5 is formed of borosilicate glass for cost reduction.

[0010] A bottom plate 4e is provided below the partition plate 5. The partition plate 5 is attached to the top of this bottom plate 4e. Further, a concave - shaped antenna chamber 7 is provided in the bottom plate 4e, and a rotating antenna 6 is housed in the antenna chamber 7. The rotating antenna 6 is connected to an antenna motor 11 via a shaft (not shown). Microwaves radiated from a magnetron (not shown) flow into the lower surface of the rotating antenna 6 through a waveguide (not shown) and an opening through which the shaft of the rotating antenna 6 passes. Then, the microwaves are diffused by the rotating antenna 6, pass through the partition plate 5, and are radiated into the heating chamber 4. In this way, the partition plate 5 is provided on the bottom surface of the heating chamber 4 while partitioning the antenna chamber 7 and the heating chamber 4.

[0011] FIG. 3 is a front view of a member that constitutes the wall surface of the heating chamber of the cooking heater according to the first embodiment. As shown in FIG. 3, the left side plate 4a is provided with a lower insertion rail 9a and an upper insertion rail 9b for slidably supporting a square dish (oven dish) 8 (see FIG. 4). The lower insertion rail 9a and the upper insertion rail 9b are formed to extend in the front - rear direction and are configured to protrude into the heating chamber 4. Similarly to the left side plate 4a, the right side plate 4b is also provided with a lower insertion rail 9a and an upper insertion rail 9b.

[0012] On the left side plate 4a, a convex portion (stopper) 3 is provided between the partition plate 5 (see FIG. 2) and the lower insertion rail 9a. When the square dish 8 is erroneously inserted onto the partition plate 5, this convex portion 3 interferes with the flange portion 8c to close and restrict further insertion of the square dish 8 into the heating chamber 4. Further, the convex portion 3 has an elongated shape in the vertical direction, with its upper end formed at a position lower than the lower insertion rail 9a and its lower end formed at a position higher than the partition plate 5. Also, the convex portion 3 is located behind (the back side) the center in the front-rear direction of the heating chamber 4. Further, the dimension from the right side plate 4b (side wall surface) where the convex portion 3 is not provided to the tip portion 3b of the convex portion 3 of the left side plate 4a is W1 (the dimension from the wall surface where the convex portion is not provided to the tip of the convex portion). Also, the tip portion 3b of the convex portion 3 is formed lower than the tips 9c of the lower insertion rail 9a and the upper insertion rail 9b. Thus, if the metal square dish 8 is mistakenly inserted, the door 1 cannot be closed. The convex portion 3 is provided at such a position.

[0013] As shown in FIG. 4, the cooking heater 100 has an oven function using superheated steam, hot air, etc. in addition to the range function using microwaves, and a square dish 8 (oven dish) used when using the oven function is provided as an accessory. This square dish 8 has a bottom plate 8a, side plates 8b rising from the front, rear, left, and right edges of the bottom plate 8a, and a flange portion 8c extending outward in the front, rear, left, and right directions from the upper ends of the side plates 8b, and is configured in a rectangular dish shape.

[0014] Also, the dimension of the square dish 8 in the left-right direction is Lw, and the dimension in the front-rear direction is Ld (the dimension of the oven dish in the front-rear direction). The dimension Lw is the longest dimension in the left-right direction and is the length from the tip of the left flange portion 8c to the tip of the right flange portion 8c. Also, the dimension Ld is the longest dimension in the front-rear direction and is the length from the tip of the front flange portion 8c to the tip of the rear flange portion 8c.

[0015] Further, the dimension Lw is the dimension at which the left and right flange portions 8c of the square plate 8 are placed on the left and right lower insertion rails 9a and the left and right upper insertion rails 9b. Also, the dimension Ld is the dimension at which the door 1 can be closed when the rear flange portion 8c of the square plate 8 abuts against the rear plate 4c.

[0016] FIG. 5 is a diagram showing the height relationship between the square plate and the convex portion, and FIG. 6 is a perspective view of the state where the square plate of FIG. 4 is inserted until it collides with the convex portion. As shown in FIG. 5, when the height from the lower surface 8a1 of the bottom plate 8a of the square plate 8 to the flange portion 8c (side portion) is h1 (height of the side portion of the oven plate), and the height from the lowermost portion 3a of the convex portion 3 to the partition plate 5 is h2, the convex portion 3 provided on the left side plate 4a of the heating chamber 4 is at a position where the height h2 < the height h1. Also, by providing the convex portion 3 at a position lower than the height h1 of the flange portion 8c (height h2), it is possible to prevent the square plate 8 from slipping in from below the convex portion 3 and being inserted. Also, by providing the convex portion 3 at a position higher than the height h1 of the flange portion 8c, it becomes possible to prevent the square plate 8 from being inserted over the convex portion 3. A detailed diagram of this height relationship is shown in FIG. 6.

[0017] As shown in FIG. 6, when the convex portion 3 is inserted so that the square plate 8 is placed on the upper surface of the partition plate 5 of the heating chamber 4 (bottom surface of the heating chamber 4), the front of the square plate 8 closes before the square plate 8 completely enters the heating chamber 4. In other words, the tip of the flange portion 8c of the square plate 8 collides with the convex portion 3, and the square plate 8 is prevented from being inserted further backward.

[0018] Incidentally, borosilicate glass has a problem that it is likely to crack due to thermal shock that occurs when it is rapidly cooled all at once from a high-temperature state or when it suddenly reaches a high temperature. As a main factor causing this thermal shock, when an object containing a metal object or a metal part is used as an object to be heated in the heating chamber 4, local overheating occurs where microwaves emitted from the rotary antenna 6 concentrate at one point through the antenna chamber 7. Therefore, as in the first embodiment, by providing the convex portion 3 at a height that prevents the square dish 8 from being inserted (placed on the upper surface of the partition plate 5) when the square dish 8 is inserted into the bottom surface of the heating chamber 4 (so that the square dish 8 contacts the upper surface of the partition plate 5), the square dish 8 cannot be inserted into the bottom surface of the heating chamber 4. Therefore, even if a low-cost borosilicate glass is used for the partition plate 5, cracking due to thermal shock during microwave heating can be prevented.

[0019] Also, the square dish 8 (oven dish) is made of metal, and the left-right dimension Lw of the square dish 8 (see Fig. 4) is designed to be substantially the same as the left-right dimension (width) of the heating chamber 4 so that it can be inserted into the lower insertion rails 9a and the upper insertion rails 9b provided on both side wall surfaces (left side plate 4a, right side plate 4b) of the heating chamber 4. The metal square dish 8 of the accessory cannot be used in a microwave oven whether it faces the partition plate 5 or not. However, when the square dish 8 is placed on the borosilicate glass partition plate 5, the partition plate 5 may be damaged. Also, originally, the square dish 8 is an accessory for use in the oven function, and when heated by microwaves, there is a risk of cracking as described above, so there is an engraving indicating that it cannot be used in the range function. However, there is a possibility that due to carelessness, the square dish 8 may be inserted into the heating chamber 4 and face the partition plate 5. In other words, there is a possibility that the lower surface 8a1 of the square dish 8 is inserted so as to contact the upper surface (surface) of the partition plate 5, which is different from the lower insertion rail 9a or the upper insertion rail 9b of the heating chamber 4. In this embodiment, even if there is such carelessness, since the convex portion (stopper) 3 is arranged at a position where it collides with the square dish 8, the square dish 8 collides with the convex portion 3 before it completely enters the heating chamber 4, and the heating operation by the range function in the accidentally inserted state can be prevented.

[0020] In addition, since the convex portion 3 is on the front side (for example, the front side of the center in the front-rear direction), there is a possibility that items with a relatively large or unusual shape (such as a gratin dish) during correct use may not fit into the interior of the cabinet due to hitting the convex portion 3, resulting in a problem with the usability of the product. However, as in the first embodiment, since the convex portion 3 is on the rear side (the inner side of the cabinet) of the center in the front-rear direction of the heating chamber 4, it does not cause a problem during normal use. However, if the square plate 8 is misinserted, it cannot fully enter and the door 1 cannot be closed, thus preventing misinsertion beforehand.

[0021] As described above, the cooking heater 100 of the first embodiment includes a door 1 that opens and closes the front surface of the main body 10 and allows food to be put in and taken out of the heating chamber 4, a rotary antenna 6 that radiates microwaves for heating food into the heating chamber 4, an antenna chamber 7 that houses the rotary antenna 6, and a partition plate 5 made of borosilicate glass that partitions the antenna chamber 7 and the heating chamber 4. Further, it is provided on the left side plate 4a of the heating chamber 4 and has a convex portion 3 at a position (height h2) lower than the height h1 of the flange portion 8c (side portion) of the square plate 8 when the square plate 8 is placed on the partition plate 5 (see FIG. 5). According to this, when the square plate 8 is inserted so as to be placed on the partition plate 5, the square plate 8 can be made to contact the convex portion 3 during insertion, thereby preventing the misinsertion of the square plate 8 into the heating chamber 4.

[0022] Also, in the first embodiment, when the convex portion 3 is provided on the left side plate 4a of the heating chamber 4, the dimension W1 from the right side plate 4b without the convex portion 3 to the tip portion 3b of the convex portion 3 is shorter than the lateral dimension Lw of the square plate 8 (see FIGS. 3 and 4). According to this, when the square plate 8 is inserted so as to be placed on the partition plate 5, the square plate 8 can be made to contact the convex portion 3 during insertion, and the insertion operation of the square plate 8 into the heating chamber 4 can be restricted.

[0023] (Second Embodiment) FIG. 7 is a perspective view of a member constituting the wall surface of the heating chamber of the cooking heater of the second embodiment, and FIG. 8 is a front view of a member constituting the wall surface of the heating chamber of the cooking heater of the second embodiment. As shown in Fig. 7, the cooking heater of the second embodiment is provided with convex portions 3A and 3B (stoppers) on both wall surfaces on the left and right sides of the heating chamber 4 (the left side plate 4a and the right side plate 4b). The convex portion 3A is the same as the convex portion 3 of the first embodiment.

[0024] When a square plate 8 is placed on the partition plate 5, the convex portion 3B is provided at a position (height h2) lower than the height h1 of the flange portion 8c (side portion) of the square plate 8 (see Fig. 5). Also, the convex portion 3B is formed on the back side rather than the center in the front-rear direction, similar to the convex portion 3 of the first embodiment.

[0025] As shown in Fig. 8, the dimension W2 (the dimension from the tip 3b of the convex portion 3A (the first convex portion) on the left side plate 4a to the tip 3b of the convex portion 3B (the second convex portion) on the right side plate 4b), that is, the dimension from the tip of the first convex portion to the tip of the second convex portion, is formed to be shorter than the lateral dimension Lw of the square plate 8 (oven plate) (see Fig. 4).

[0026] By the way, when the convex portion 3 is provided on one wall surface of the heating chamber 4 as in the first embodiment, when the square plate 8 is inserted obliquely (for example, when it is inserted with the left side plate 4a on the upper side and the right side plate 4b on the lower side), or in an irregular situation such as a rather forced insertion, although the insertion of the square plate 8 is not easy, there is a possibility that it can be inserted beyond the convex portion 3. Therefore, in the second embodiment, by providing the convex portions 3A and 3B on both sides (both the left side plate 4a and the right side plate 4b), it is possible to deal with the above-mentioned irregular problems and reliably prevent misinsertion compared with the first embodiment.

[0027] (Third Embodiment) Fig. 9 is a cross-sectional view of a member constituting the wall surface of the heating chamber of the cooking heater of the third embodiment. As shown in Fig. 9, the cooking heater of the third embodiment is provided with a convex portion 3C (stopper) on the rear plate 4c (the inner side of the side wall surface) of the heating chamber 4. This convex portion 3C is provided at a position (height h2) lower than the height h1 of the flange portion 8c (side portion) of the square dish 8 when the square dish 8 is placed on the partition plate 5 (see Fig. 5). Further, the convex portion 3C is configured such that when the square dish 8 is inserted into the lower insertion rail 9a, the insertion operation of the square dish 8 is not restricted in terms of position and shape.

[0028] Further, when the convex portion 3C is provided on the inner side wall surface (rear plate 4c) of the heating chamber 4 facing the door 1, the dimension W3 (the dimension from the tip of the convex portion to the door) from the tip portion 3b of the convex portion 3C to the door 1 is formed shorter than the dimension Ld (the dimension in the front-rear direction of the oven dish) in the front-rear direction of the square dish 8. According to this, when the square dish 8 is inserted so as to be placed on the partition plate 5, the square dish 8 can be brought into contact with the convex portion 3 before the insertion is completed, and the insertion of the square dish 8 into the heating chamber 4 can be prevented in advance.

[0029] Further, as long as the convex portion 3C can prevent the misinsertion of the square dish 8 into the heating chamber 4, the position and number of the convex portions 3C are not limited to the embodiment shown in Fig. 9.

[0030] The present invention is not limited to the above-described embodiments, and a plurality of the first to third embodiments can be selected and configured. Further, in the first embodiment, the case where the convex portion 3 is provided on the left side plate 4a has been described as an example, but a configuration in which the convex portion is provided on the right side plate 4b may also be possible.

Explanation of Reference Numerals

[0031] 1 Door 3, 3A, 3B, 3C Convex portion 3a Lowermost part 3b Tip portion 4 Heating chamber 4a Left side plate (one surface, side wall surface) 4b Right side plate (one surface, side wall surface) 4c Rear plate (one surface, side wall surface) 5 Partition plate 6 Rotating antenna 7 Antenna chamber 8 Angular dish (oven dish) 8a Bottom plate 8b Side plate 8c Flange part (edge part) 9a Lower insertion rail 9b Upper insertion rail 10 Main body 10a Opening 100 Cooker h1 Height (height of the edge part of the oven dish) h2 Height W1 Dimension (dimension from the wall surface without the convex part to the tip of the convex part) W2 Dimension (dimension from the tip of the first convex part to the tip of the second convex part) W3 Dimension (dimension from the tip of the convex part to the door) Ld Dimension (dimension in the front - rear direction of the oven dish) Lw Dimension (dimension in the left - right direction of the oven dish)

Claims

1. A door that opens and closes the front of the main body and takes food in and out of the heating chamber, A rotary antenna that radiates microwaves for heating the food into the heating chamber, An antenna chamber that houses the rotary antenna, A partition plate made of borosilicate glass that partitions the antenna chamber and the heating chamber, and A cooking appliance provided on at least one of the side wall surfaces of the heating chamber, and having a convex portion at a position lower than the height of the side portion of the oven tray when the oven tray is placed on the partition plate.

2. In the cooking appliance according to Claim 1, When the convex portion is provided on either the left or right side wall surface of the heating chamber, the dimension from the side wall surface without the convex portion to the tip of the convex portion is shorter than the width dimension of the oven tray in the left-right direction. A cooking appliance.

3. In the cooking appliance according to Claim 1, When the convex portion is provided on the left and right side wall surfaces of the heating chamber, the dimension from the tip of the first convex portion to the tip of the second convex portion is shorter than the width dimension of the oven tray in the left-right direction. A cooking appliance.

4. In the cooking appliance according to Claim 1, When the convex portion is provided on the back side wall surface of the heating chamber facing the door, the dimension from the tip of the convex portion to the door is shorter than the dimension of the oven tray in the front-back direction. A cooking appliance.

5. In the cooking appliance according to Claim 1, The convex portion is located deeper than the center in the front-back direction of the heating chamber. A cooking appliance.

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