JP3526525B2 - Cooking device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to the back of a heating chamber,
The present invention relates to a heating cooker configured to include a hot air supply device that supplies hot air into the heating chamber.

[0002]

A hot air supply device in a heating cooker of this type includes a casing provided at the back of a heating chamber, a heater and a fan provided in the casing, and a fan provided outside the casing. And a motor provided so as to rotationally drive. The casing is conventionally set to have substantially the same size as the rear surface of the heating chamber and is arranged right behind the heating chamber. Further, the fan is arranged in the casing so as to correspond to substantially the center of the rear surface of the heating chamber, and the heater is arranged so as to surround the fan. On the rear surface of the heating chamber, a suction port is formed at a portion corresponding to the central part of the fan, and blow-out ports are formed in the upper and lower portions in the left-right direction.

By the way, in the above-mentioned conventional configuration,
Since the casing of the hot air supply device has almost the same size as the rear surface of the heating chamber and has a considerably large size, there is a problem that the cost becomes high.

In order to deal with such a situation, the applicant of the present invention has filed, for example, Japanese Patent Application No. 7-304144 (Japanese Patent Application Laid-Open No. 9-145063). In this thing, as shown in FIG.
Is provided on the back side of the heating chamber 2 in a state of being brought close to the left side of the heating chamber 2. In this case, the width dimension of the casing 3 of the hot air supply device 1 in the left-right direction is set smaller than the width dimension of the rear surface of the heating chamber 2 in the left-right direction, and the casing 3 is arranged closer to the left side than the heating chamber 2. ing. And
On the rear surface of the heating chamber 2, a suction port 5 is formed in a portion corresponding to the central portion of the fan 4, and a hot air outlet 6 is formed in a portion corresponding to the outer peripheral portion of the fan 4.

In the above structure, when the fan 4 is rotationally driven, the hot air heated by the heater 7 is blown out from the outlet 6 into the heating chamber 2 as shown by the arrow in FIG. 5 is sucked into the casing 3. At this time, the round plate 8 on which the food to be cooked is placed is placed on a rotary net (not shown) provided at the bottom of the heating chamber 2, and the round plate 8 is rotated. By supplying hot air from the hot air supply device 1 while rotating the circular plate 8 on which the food to be cooked in this manner, it is possible to heat the food to be cooked as uniformly as possible while miniaturizing the hot air supply device 1. Become.

However, in the above-mentioned configuration,
There are the following defects. That is, when the round plate 8 on which the object to be cooked is placed is placed on a rotary net and the plate 8 is heated while rotating, the object to be cooked can be heated as uniformly as possible. Has a problem that it has a small capacity to store food. Therefore, in order to eliminate the lack of capacity, it is conceivable to use a square plate and store the square plate in the heating chamber 2 in a fixed state for cooking, but in this case, the uneven heating is caused by the hot air flow described above. Will occur.

The present invention has been made in view of the above circumstances, and an object thereof is to make a casing of a hot air supply device small in size and cook a cooked object as uniformly as possible even when a square plate is used. To provide a cooker that can.

[0008]

In order to achieve the above object, a heating cooker according to the present invention comprises a heating chamber, a square plate which is removably housed in the heating chamber, and a back portion of the heating chamber. A hot air supply device provided with a heater, a fan that supplies air heated by the heater as hot air into the heating chamber, a casing that houses the heater and the fan, and a motor that rotationally drives the fan. The width dimension of the casing in the hot air supply device in the left-right direction is set to be smaller than the width dimension of the heating chamber in the left-right direction, and the casing has the left or right side wall of the casing in the left-right direction of the heating chamber. Is located near one side of the heating chamber so that the main outlet of the hot air to the heating chamber is located on the rear surface of the heating chamber and the casing. In the area of the heating chamber, it is arranged at a position that is approximately the center of the heating chamber in the left-right direction, and the opening area of this main outlet is larger than the auxiliary outlet on the side of the rear side of the heating chamber. So that the rotation direction of the fan is counterclockwise when viewed from the front when the casing is arranged closer to the right side with respect to the heating chamber,
It is characterized in that it is set so as to be clockwise when viewed from the front when it is arranged to the left.

According to the above-mentioned means, since the width of the casing of the hot air supply device in the left-right direction is set smaller than the width of the heating chamber in the left-right direction, the casing can be made compact. .

Further, the main outlet of the hot air to the heating chamber is arranged at a position substantially in the center of the heating chamber in the left-right direction, and the rotation direction of the fan is set as described above so that the main outlet is The hot air blown into the heating chamber flows to the front side on the side opposite to the side closer to the casing in the heating chamber, and then to the side closer to the casing. Therefore, since the hot air flows almost all over the heating chamber, even when a square plate is housed in the heating chamber for cooking, the food to be cooked placed on the plate can be heated as uniformly as possible. Like

In this case, a round plate rotated by the driving means is provided in the lower part of the heating chamber, and a lower outlet for the round plate is provided on the rear surface of the heating chamber between the round plate and the square plate and heating is performed. It is preferable to provide it at a position which is substantially the center of the chamber in the left-right direction. Further, it is preferable to provide a lower heater for heating the round plate from below in the lower part of the heating chamber.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment in which the present invention is applied to a microwave oven with an oven function will be described below with reference to FIGS. First, in FIG. 3 showing the overall appearance, a main body 11 of the heating cooker has a rectangular box shape, and an inner box 13 forming a heating chamber 12 is provided inside. A door 14 for opening and closing a front opening of the heating chamber 12 is provided on the front surface of the main body 11 so as to be vertically rotatable, and an operation panel 15 is provided on the right side of the door 14.

At the back of the heating chamber 12 (the back of the inner box 13), as shown in FIGS. 1 and 2, the hot air supply device 16 is arranged on one side of the heating chamber 12, in this case, on the right side. It is set up. The hot air supply device 16 is provided with a rectangular casing 17 fixed to the back surface of the inner box 13, a fan 18 housed in the casing 17, and a fan 18 enclosed in the casing 17. A ring-shaped heater 19, a heat shield cover 20 provided to cover the casing 17 from the rear, a heat shield cover 20 attached to the heat shield cover 20 via a mounting plate 21, and a fan 18 rotating via a rotary shaft 22. It is composed of a driving motor 23 and a cooling fan 24 attached to the rotating shaft 22 so as to cool the motor 23.

Here, the height dimension of the casing 17 in the vertical direction is substantially the same as the height dimension of the heating chamber 12, but the width dimension A1 in the horizontal direction is the width dimension in the horizontal direction of the heating chamber 12. It is set to be smaller than A2, and the left side wall 17a of the casing 17 is located substantially in the center of the heating chamber 12 in the left-right direction, in this case, slightly to the left of the left-right center line B of the heating chamber 12, The heating chamber 12 is arranged on the right side. The right side wall 17b of the casing 17 is located at substantially the same position as the right side wall of the heating chamber 12.

The heater 19 is provided with arc-shaped portions 19a and 19b, which are substantially concentric with the fan 18, at portions corresponding to the upper right portion and the lower left portion of the four corners of the casing 17, respectively. The arcuate portions 19a and 19b are arranged so as to be close to the fan 18.

Then, on the rear surface of the heating chamber 12 (the rear wall of the inner box 13), in the region of the casing 17 and on the upper portion of the heating chamber 12 in the substantially central portion in the left-right direction (in the vicinity of the center line B), A main outlet 25 is formed so as to extend in the vertical direction, and a lower outlet 26 also serving as a sub outlet is formed in the lower portion so as to be located outside the lower left arc portion 19b of the heater 19, and the fan 18 An upper auxiliary outlet 27 having a smaller width dimension in the vertical direction than the main outlet 25 and extending rightward is formed in the upper portion corresponding to above the main outlet 25, and the heater 19 is provided in the upper right portion. An auxiliary outlet 28 also serving as a sub outlet is formed so as to be located outside the upper right circular arc portion 19a.

In this case, the opening area of the main outlet 25 is
It is set to be larger than the auxiliary outlet 28 on the right side on the rear surface of the heating chamber 12.

Further, on the rear surface of the heating chamber 12, a suction port 29 is formed at a portion corresponding to the central portion of the fan 18. Each of the blowout ports 25, 26, 27, 28 and the suction port 29 has a large number of small holes (punching holes).
It is formed by.

In this case, the rotation direction of the fan 18 is
The counterclockwise direction when viewed from the front (see arrow C in FIG. 1) is set. As shown in FIG. 5, a shielding plate 30 forming a shielding portion is fixedly provided in a portion of the casing 17 corresponding to the lower edge of the lower outlet 26.

A plate receiving portion 32 for mounting a square plate 31 is provided on the left and right side surfaces of the heating chamber 12 substantially at the center in the vertical direction.
32 is provided, and the square plate 31 is housed in the heating chamber 12 so that it can be put in and taken out. At the bottom of the heating chamber 12, there is provided a rotary net 34 that is driven to rotate by a motor 33 that constitutes a driving means.
A round plate 35 made of ceramic, in this case porcelain, is placed on the top. A lower heater 36, which is a planar heater, is provided below the heating chamber 12, in this case, on the lower surface of the bottom of the inner box 13.

The width dimension of the square plate 31 in the left-right direction is set to be substantially the same as the width dimension in the heating chamber 12 as shown in FIG. 1, and the length dimension in the front-back direction is shown in FIG. As described above, the length dimension in the front-rear direction inside the heating chamber 12 is set to be substantially the same. As shown in FIG. 1, in the state in which the square plate 31 and the round plate 35 are accommodated, the upper part of the main outlet 25, the upper auxiliary outlet 27, the auxiliary outlet 28, and the suction port 29 are above the square plate 31. And the lower portions of the lower outlet 26 and the inlet 29 are located between the square plate 31 and the round plate 35.

As shown in FIG. 4, the ceiling portion of the heating chamber 12 is provided with a concave portion 37 which is recessed upward. Although not shown, a magnetron is provided on the outer surface side of the heating chamber 12, and microwaves generated from the magnetron are supplied into the heating chamber 12 during range cooking. . The hot air supply device 16 is covered from the rear by a rear cover 38 (see FIG. 3).

Next, the operation of this embodiment will be described. First, a case where both the square plate 31 and the round plate 35 are housed in the heating chamber 12 for cooking will be described. In this case, the fan 18 is rotationally driven by the motor 23 of the hot air supply device 16, the heater 19 is energized, the motor 33 rotates the round plate 35, and the lower heater 36 is energized.

Of these, the fan 18 of the hot air supply device 16
Based on the air blowing action of the
The hot air sucked into the casing 17 from the heater 9 and heated by the heater 19 is blown into the heating chamber 12 through the outlets 25 to 28.

Here, since the rotation direction of the fan 18 is the counterclockwise direction (the direction of arrow C), the hot air blown out from the main air outlet 25 located at the upper part of the central portion of the rear surface of the heating chamber 12 in the left-right direction is: As indicated by an arrow D in FIG. 6, the door 12 flows after the left side (the side opposite to the suction port 29) opposite to the side closer to the casing 17 and the downward direction.
And flows rightward along the square plate 31 and then flows into the casing 17 through the suction port 29.

At this time, the hot air blown out from the main outlet 25 flows almost entirely over the upper portion of the square plate 31 in the heating chamber 12 from left to right, so that it is placed on the square plate 31. The cooked object (not shown) is heated as uniformly as possible. In addition, since the downward hot air satisfactorily hits the square plate 31, the food to be cooked can be heated well.

Further, the hot air blown out from the upper auxiliary blowout port 27 existing in the upper portion of the rear surface of the heating chamber 12 is as shown in FIGS.
As indicated by arrow E in FIG.
Flow toward the left front along the direction of the door 14, and after the direction is changed by the door 14, the water flows toward the rear side along the corner plate 31.

At this time, the concave portion 3 is formed in the ceiling of the heating chamber 12.
7 is formed, the hot air blown from the upper auxiliary blowout port 27 flows along the inner surface of the recess 37 away from the suction port 29. For this reason,
It is possible to prevent a so-called short circuit in which the hot air blown out from the upper auxiliary blowout port 27 flows to the suction port 29 side as it is, and moreover, the hot air can be well guided to the front part of the heating chamber 12.

The planar shape of the square plate 31 is the heating chamber 12
Since it is formed to have substantially the same size as the planar shape of No. 2, the hot air that has flowed to the front part of the heating chamber 12 does not go below the square plate 31 but flows on the upper surface of the square plate 31.
Therefore, the cooked food on the square plate 31 can be heated more efficiently by the hot air. Moreover, since a large mounting area for placing the food to be cooked on the square plate 31 can be secured, a large number of food to be cooked can be cooked at one time.

Further, the hot air blown out from the auxiliary outlet 28 located in the upper right part of the rear surface of the heating chamber 12 mainly flows on the right side of the heating chamber 12. In this case, in the heating by the hot air blown out from the main outlet 25 and the upper auxiliary outlet 27, the right side portion on the square plate 31 tends to be weaker in heating than other portions, but the auxiliary outlet The hot air blown out from the mouth 28 can supplement the heating of the right side portion, and the food to be cooked can be heated more uniformly.

On the other hand, the hot air blown out from the lower outlet 26 located in the lower part of the central portion of the rear surface of the heating chamber 12 in the left-right direction mainly flows from the substantially central portion of the heating chamber 12 toward the front and downward, and at the door 12. After changing the direction, the flow comes to the suction port 29 side. In this case, since the shield plate 30 is provided in the casing 17 at a portion corresponding to the lower edge of the lower outlet 26, as the hot air from the fan 18 hits the shield plate 30 in the casing 17, Since the hot air comes to be blown from the lower outlet 26 toward the heating chamber 12, the lower outlet 26
The amount of hot air blown out of the heating chamber 12 into the heating chamber 12 can be maximized.

At this time, the food to be cooked on the circular plate 35 is heated by the hot air blown from the lower outlet 26. In this case, the hot air tends to be biased to the substantially central portion of the round plate 35, but since the round plate 35 rotates, the food to be cooked on the round plate 35 is heated as uniformly as possible. Moreover, since the food to be cooked on the circular plate 35 is also heated from below by the lower heater 36, heating of the lower heater 36 can compensate for insufficient heating due to hot air, and the food to be cooked can be cooked more efficiently. can do. Further, the food to be cooked on the square plate 31 is also heated from below by the hot air blown from the lower outlet 26.

In addition, since not only one square plate 31 but also the round plate 35 can be used for cooking in this manner, the amount of food that can be cooked at one time can be increased by the amount of the round plate 35. Moreover, since the round plate 35 is made of ceramic, it can be used not only for cooking with hot air as described above but also for cooking in a range, and accessories can be effectively used.

On the other hand, when only one square plate 31 is housed in the heating chamber 12 for cooking, the rotary net 34 may or may not be rotated, and the lower heater 36 is also provided. It may or may not be energized.

According to the first embodiment described above, the following effects can be obtained. Since the lateral width A1 of the casing 17 in the hot air supply device 16 is set smaller than the lateral width A2 of the heating chamber 12,
The casing 17 and, by extension, the hot air supply device 16 can be formed in a small size, and the cost can be reduced.

The casing 17 is moved to the right with respect to the heating chamber 12, and the main outlet 25 of the hot air to the heating chamber 12 is blown out.
Is arranged at a position substantially above the center of the heating chamber 12 in the left-right direction, and the rotation direction of the fan 18 is set to be a counterclockwise direction.
The hot air blown from the heating chamber 12 into the heating chamber 12
After flowing to the front on the left side opposite to the side to which the casing 17 is approached, it then flows to the right side. Therefore, since the hot air flows almost all over the heating chamber 12, even when the square plate 31 is housed in the heating chamber 12 for cooking, the food to be cooked placed on the square plate 31 is made as uniform as possible. Be able to heat.

Main outlet 25, upper auxiliary outlet 27,
And the hot air blown from the auxiliary outlet 28 on the upper side,
It is designed to circulate above the square plate 31 and hardly circulates to the lower side of the square plate 31.
The above cooked food can be heated more efficiently by the hot air.

When the round plate 35 is placed on the rotary net 34 for cooking, the rotary plate 35 is rotated and heated by the hot air from the lower outlet 26 and the lower heater 36.
The food to be cooked on the circular plate 35 can be cooked as uniformly and efficiently as possible.

Arc-shaped portions 19a, 1 are provided at two locations on the heater 19.
9b, the arc-shaped portions 19a, 19
Outside the b, the auxiliary outlet 28 and the lower outlet 26
A large space for forming the (sub outlet) can be secured. As a result, it is possible to secure a wide range in which hot air is blown out even though the casing 17 is downsized, and it is possible to further reduce uneven heating.

FIG. 8 shows a second embodiment of the present invention. This second embodiment differs from the above-mentioned first embodiment in the following points. That is, instead of the shield plate 30 in the first embodiment, the casing 17 is integrally provided with the shield portion 40. With such a configuration, there is an advantage that the number of parts can be reduced and the cost can be reduced accordingly.

9 and 10 show a third embodiment of the present invention. This third embodiment differs from the above-mentioned first embodiment in the following points. That is, the casing 17
An arcuate portion 41 is formed at one of the lower right corners of the four corners. Further, the lower auxiliary blow-out port 42 is formed in the lower right portion of the rear surface of the heating chamber 12 at a position immediately above the round plate 35.

With such a structure, the flow of the hot air flowing in the casing 17 becomes smooth in the arcuate portion 41, the flow resistance of the hot air in that portion becomes small, and the casing 17 becomes hot. It can be prevented as much as possible. In addition, since the lower auxiliary outlet 42 is formed, hot air is blown into the heating chamber 12 also from here, and particularly when cooking with the round plate 35, the hot air also blows the round plate. Since the food to be cooked on 35 can be heated, the heating efficiency can be further improved.

On the other hand, the heater 19 is fixed in the casing 17 as follows. Both terminals 43 of the heater 19
Is located at the upper left of the casing 17. A fixing collar 44 is provided in a fixed state on the outer peripheral portion of the heater 19 on one side of the terminal 43, which is orthogonal to the extending direction of the heater 19. The left side wall 17a of the casing 17 with which the fixing collar portion 44 abuts has a rear end portion which is an inclined surface 45 that inclines to the right, and an insertion hole 45a through which the heater 19 is inserted is formed in the inclined surface 45. ing. Further, in the casing 17, a U-shaped receiving portion 46 is provided on the right side opposite to the fixing collar portion 44.
The heater fixing member 47 having the is fixed.

The heater 19 has the terminal 43 side on the casing 1 side.
7, with most of the casing 17
The heater 19 is housed inside and the right side of the heater 19 is inserted into the receiving portion 46 of the heater fixture 47. Then, by applying the fixing collar portion 44 to the slope 45 from the inside of the casing 17, the heater 19 is
The inclined surface 45 tilts in the arrow E direction, and the right side of the heater 19 is fixed to the receiving portion 46 while being pressed against the receiving portion 46 in the arrow E direction.

By mounting the heater 19 in such a structure, even if vibration is generated from the motor 23 that rotationally drives the fan 18, it is possible to prevent the heater 19 from vibrating as much as possible, and thus the heater 19 and its surroundings. It is possible to prevent the generation of so-called chatter noise between the parts.

The present invention is not limited to the above-mentioned embodiments, but can be modified or expanded as follows. The hot air supply device 16 may be arranged closer to the left side than the heating chamber 12. In this case, the rotation direction of the fan 18 is set clockwise when viewed from the front.

The auxiliary outlet 28 in the upper right portion may be provided if necessary, and may not be provided. If the auxiliary outlet 28 is not provided, the opening area of the auxiliary outlet on the side of the rear surface of the heating chamber 12 becomes zero. The round plate 35 may be made of glass.

[0048]

As is apparent from the above description, according to the present invention, the following effects can be obtained. Claim 1
According to this heating cooker, the width dimension of the casing in the hot air supply device in the left-right direction is set to be smaller than the width dimension of the heating chamber in the left-right direction, so that the casing and thus the hot air supply device can be made compact. Therefore, the cost can be reduced.

Then, the casing is moved to one side with respect to the heating chamber, the main outlet of the hot air for the heating chamber is arranged at a position substantially at the center of the heating chamber in the left-right direction, and the rotation direction of the fan is The hot air blown from the main outlet into the heating chamber is set so that it is set in the counterclockwise direction when the casing is moved to the right side and in the clockwise direction when the casing is moved to the left side. As it flows over almost the entire area, even when a square dish with a large loading capacity for food is stored in the heating chamber and cooked, it is possible to heat the food to be cooked placed on that square dish as evenly as possible. become able to.

According to the heating cooker of the second aspect, the hot air blown from the main outlet comes to flow above the square plate, so that the food to be cooked on the square plate can be efficiently heated. become able to.

According to the heating cooker of the third aspect, a part of the hot air blown into the heating chamber flows forward along the concave portion of the ceiling of the heating chamber. It is possible to prevent the occurrence of a short circuit, in which the hot air blown out of is sucked into the suction port as it is.

According to the cooking device of the fourth aspect, the hot air blown from the upper auxiliary blowing port reaches the front as much as possible, so that the food to be cooked on the square plate can be heated more efficiently. Like

According to the heating cooker of the fifth aspect, the round plate is arranged below the square plate, and while rotating the round plate, hot air is blown from the lower outlet to remove the food to be cooked on the round plate. By heating, the food to be cooked on the round plate can be cooked well. Further, by using the round plate, the amount that can be cooked at one time can be further increased.

According to the heating cooker of the sixth aspect, by heating the round plate from below by the lower heater, the food to be cooked on the round plate can be cooked more favorably.

According to the heating cooker of the seventh aspect, since the round plate is made of ceramic, it can be shared with the one used for range cooking, and the accessories can be effectively used.

According to the heating cooker of the eighth aspect, when the hot air from the fan hits the shielding portion in the casing, the hot air is blown from the lower outlet to the heating chamber side. It is possible to maximize the amount of hot air blown from the outlet into the heating chamber. According to the cooking device of the ninth aspect, the number of parts can be reduced by providing the shielding portion integrally with the casing.

According to the heating cooker of the tenth aspect, since the heater has the arcuate portion, it is possible to secure a large space for forming the sub outlet outside the arcuate portion. Like As a result, it is possible to secure a wide range in which hot air is blown out, despite the downsizing of the casing.

According to the heating cooker of the thirteenth aspect, by forming the arcuate portion on the peripheral wall portion of the casing, the flow of the hot air flowing in the casing becomes smooth at the arcuate portion, and the flow of the hot air in that portion is smoothed. It is possible to reduce the road resistance and prevent the casing from getting hot.

According to the heating cooker of the fourteenth aspect, the heater can be fixedly attached to the casing, and the chatter noise caused by the vibration of the motor can be prevented as much as possible.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of essential parts showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the main part

FIG. 3 is an overall perspective view of the appearance.

FIG. 4 is a vertical sectional side view of a main part.

FIG. 5 is a perspective view of a casing and a shielding plate of the hot air supply device.

FIG. 6 is a diagram for explaining a flow of hot air blown out from a main outlet.

FIG. 7 is a view for explaining a flow of hot air blown out from an upper auxiliary blowout port.

FIG. 8 is a perspective view of a casing of a hot air supply device showing a second embodiment of the present invention.

FIG. 9 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 10 is a cross-sectional plan view of a main part showing a heater installation state.

FIG. 11 is a schematic cross-sectional plan view showing a conventional example, showing a flow of hot air.

[Explanation of symbols]

11 is a main body, 12 is a heating chamber, 16 is a hot air supply device, 17
Is a casing, 17a is a left side wall, 17b is a right side wall, 18
Is a fan, 19 is a heater, 19a and 19b are arcuate portions,
Reference numeral 23 is a motor, 25 is a main outlet, 26 is a lower outlet (sub outlet), 27 is an upper auxiliary outlet, 28 is an auxiliary outlet (sub outlet), 29 is a suction inlet, and 30 is a shield (shield). Part), 31 is a square plate, 33 is a motor (driving means), 35 is a round plate, 36 is a lower heater, 37 is a recess, 40
Is a shielding portion, 41 is an arcuate portion, 42 is a lower auxiliary outlet,
44 is a fixing collar, 45 is a slope, and 47 is a heater fixing tool.

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Claims (14)

(57) [Claims] 1. A heating chamber, a square plate housed in and into the heating chamber, a heater disposed in the back of the heating chamber, and a heater and air heated by the heater as hot air in the heating chamber. A hot air supply device provided with a fan for supplying, a heater for housing the heater and the fan, and a motor for rotationally driving the fan, and the width dimension of the casing in the hot air supply device in the left-right direction is the left and right sides of the heating chamber. The width of the casing is set smaller than that of the heating chamber, and the casing is placed on one side with respect to the heating chamber so that the left or right side wall of the casing is located substantially in the center of the heating chamber in the left-right direction. , The main outlet of the hot air to the heating chamber is located on the rear surface of the heating chamber and in the region of the casing, which is substantially the center of the heating chamber in the left-right direction. As well as location,
The opening area of the main outlet is set to be larger than that of the auxiliary outlet on the side of the rear surface of the heating chamber, and the rotation direction of the fan is arranged so that the casing is moved to the right side with respect to the heating chamber. The heating cooker is characterized in that it is set so as to be counterclockwise when viewed from the front, and clockwise when viewed from the front when arranged to the left. 2. The longitudinal dimension of the square plate is set to be substantially the same as the longitudinal dimension of the heating chamber, and the main outlet on the rear surface of the heating chamber and the air in the heating chamber are set in the casing. The heating cooker according to claim 1, wherein at least a part of a suction port for sucking into the cooker is arranged so as to be located above the square plate. 3. The heating cooker according to claim 1 or 2, wherein the ceiling of the heating chamber is formed in a concave shape that is recessed upward. 4. An upper auxiliary blow-out port, which is located near the main blow-out port and has a smaller width dimension in the vertical direction than the main blow-out port and extends laterally, is provided on the upper portion of the rear surface of the heating chamber. The heating cooker according to any one of claims 1 to 3. 5. A round plate which is rotated by a driving means is provided in the lower part of the heating chamber, and a lower outlet for the round plate is provided on the rear surface of the heating chamber between the round plate and the square plate, and the heating chamber. The heating cooker according to claim 1, wherein the heating cooker is provided at a position substantially in the center of the left-right direction. 6. The heating cooker according to claim 5, wherein a lower heater for heating the round plate from below is provided in the lower portion of the heating chamber. 7. The cooking device according to claim 5, wherein the round plate is made of ceramic. 8. The casing is provided with a shielding portion which is located at a portion corresponding to a lower edge portion of the lower outlet and receives hot air from a fan and blows the air from the lower outlet into the heating chamber. The heating cooker according to any one of claims 5 to 7. 9. The heating cooker according to claim 8, wherein the shield is provided integrally with the casing. 10. The heater has an arc-shaped portion having an arc shape substantially concentric with the fan at a portion corresponding to at least one of four corners of the casing, and the arc-shaped portion is provided on the rear surface of the heating chamber. The heating cooker according to claim 1, wherein a sub outlet is provided at a position outside the portion. 11. The heating cooker according to claim 10, wherein the sub-blowout port is located at an upper corner of the rear surface of the heating chamber. 12. The heating cooker according to claim 10, wherein the sub outlet is located at a lower portion of the rear surface of the heating chamber and substantially at the center in the left-right direction. 13. The cooking device according to claim 1, wherein an arcuate portion is formed on at least one of the four corners of the peripheral wall portion of the casing. 14. A fixing collar portion is provided on an outer peripheral portion of one end portion of the heater, the fixing collar portion protruding in a direction intersecting with an extending direction of the heater, and the fixing collar portion is inside the casing and is opposite to the fixing collar portion. A heater fixing member is provided at a position, the fixing flange is applied to an inclined surface provided on the side wall of the casing, and the other end of the heater is pressed against the heater fixing member. The heating cooker according to claim 1.