JP2012164606A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heating cooker provided with a cooling duct which can efficiently cool heating means such as a heating coil.SOLUTION: A heating cooker comprises a body case 1, a top plate 2 covering a top face of the body case 1, a left heating coil unit 3 arranged inside the body case 1, a fan 62 supplying cooling air inside the body case 1 and a left cooling duct 8 on which a plurality of jet flow ports blowing out the cooling air supplied by the fan 62 toward the left heating coil unit 3 are formed on the lower side of the left heating coil unit 3. A top face 81 of the left cooling duct 8 includes step-like upper step face 82 and lower step face 84. On the upper step face 82 and lower step face 84, upper step jet flow ports 86 and lower step jet flow ports 88 are provided, respectively.

Description

  The present invention relates to a heating cooker that heats an object to be heated disposed on an upper surface of a top plate by a heating means provided in a main body.

  Conventionally, as this type of cooking device, “a plurality of air discharge ports 35D are formed as air discharge portions on the upper surface of the air duct portion 35B at positions corresponding to the lower surfaces of the induction heating coils 4 and 5; The peripheral members such as the induction heating coils 4 and 5 and the coil bases 4A and 5A that support the induction heating coils 4 and 5 are cooled by the air discharged from the air discharge port 35D (for example, see Patent Document 1).

JP 2010-182480 A (page 11, FIG. 5)

The heating cooker described in Patent Document 1 cools the heating coil by blowing cooling air from the air duct portion (cooling duct) toward the heating coil.
However, in the conventional configuration, the amount and direction of the cooling air blown from the air duct portion cannot be adjusted. For example, in Cited Document 1, cooling air is blown out from one cooling duct provided in common to the left and right heating coils. However, when only the cooling capacity for one heating coil is desired to be increased, or for a specific part of the heating coil. When it was desired to increase the cooling capacity, it was difficult to respond. In order to increase the cooling capacity, it is conceivable to increase the blowing capacity of the fan. However, in that case, the cooling capacity becomes excessive in part, and the operation cost and noise increase. In addition, for example, there are cases where it is desired to cool parts around the heating coil, but in this case, it is necessary to take another measure such as providing another duct, which leads to a complicated internal structure and an increase in cost.

  The present invention has been made to solve the above-described problems, and provides a heating cooker including a cooling duct capable of efficiently cooling heating means such as a heating coil.

  A heating cooker according to the present invention includes a main body, a top plate that covers the upper surface of the main body, a heating means disposed in the main body, a blower means for supplying cooling air into the main body, and a heating means. A cooling duct having a plurality of jets formed on the upper surface, the upper surface of the cooling duct having a plurality of steps. And the jet port is provided on at least two of the plurality of surfaces.

  According to the present invention, a plurality of surfaces having steps are formed on the upper surface of the cooling duct having the cooling air jet port. For this reason, since the relatively high surface is close to the heating coil, the cooling air can be blown out intensively, and since the relatively low surface is far from the heating coil, the cooling air can be diffused. . Therefore, by adjusting the height of the upper surface of the cooling duct, efficient cooling according to the cooling target such as the heating means can be performed.

It is a perspective view which decomposes | disassembles and shows a part of heating cooker which concerns on Embodiment 1. FIG. It is a top view of the state which removed the top plate of the heating cooker which concerns on Embodiment 1. FIG. It is a perspective view of the state which removed the top plate and heating means of the heating cooker which concerns on Embodiment 1. FIG. 2 is a perspective view of an air passage unit according to Embodiment 1. FIG. 3 is a schematic cross-sectional view of the vicinity of a left cooling duct according to Embodiment 1. FIG. 6 is a perspective view of an air passage unit according to Embodiment 2. FIG. 6 is a schematic cross-sectional view of the vicinity of a left cooling duct according to Embodiment 2. FIG.

Embodiment 1 FIG.
FIG. 1 is an exploded perspective view showing a part of the heating cooker according to the first embodiment. FIG. 2 is a plan view of the heating cooker according to Embodiment 1 with the top plate removed.

  The cooking device 100 is a so-called built-in cooking device that is installed in an installation opening formed in kitchen furniture such as a sink. The heating cooker 100 includes a substantially rectangular parallelepiped main body case 1 having an upper surface opened and a top plate 2 covering the upper surface opening of the main body case 1. A main body intake port 11 and a main body exhaust port 12 are provided on the back side of the main body case 1. The inside of the main body case 1 is partitioned vertically by a support plate 13. A box-shaped grill heating chamber 14 is provided below the support plate 13, and the left heating coil unit 3 and right heating are provided above the support plate 13. A coil unit 4 and an electric heater 5 are provided. An operation display unit 15 is provided on the front side of the top plate 2. A control board 16 that performs overall control including heating control of the heating cooker 100 and an operation display board 17 are provided inside the main body case 1.

  The entire top plate 2 is made of a material such as heat-resistant tempered glass or crystallized glass, and is formed in a rectangular or square shape according to the shape of the opening of the main body case 1. The top plate 2 is surrounded by an upper frame 2a formed in a frame shape from a metal plate such as a nonmagnetic stainless steel plate or an aluminum plate. Between the outer periphery of the top plate 2 and the opening of the upper frame 2a, rubber packing or a sealing material (not shown) is interposed, and both are fixed in a watertight state. As described above, the gap formed in the facing portion between the upper frame 2a and the top plate 2 is closed by the rubber packing or the sealing material (not shown). Water droplets do not enter inside.

  The upper frame 2a includes a top plate intake port 21 and a top plate exhaust port 22 that are simultaneously punched and formed by a press machine when the upper frame 2a is formed. The top plate intake port 21 is provided at a position corresponding to the main body intake port 11, and the top plate exhaust port 22 is provided at a position corresponding to the main body exhaust port 12. Although not shown, a cover having a large number of small communication holes is detachably mounted on the top plate intake port 21 and the top plate exhaust port 22. Intrusion of foreign matter into the top plate exhaust port 22 is suppressed.

  A main body inlet 11 provided on the upper surface on the back side of the cooking device 100 is an opening for sucking air into the cooking device 100. Moreover, as shown in FIGS. 1-3, the main body exhaust port 12 provided in the upper surface of the back side of the heating cooker 100 discharges the heated air in the heating cooker 100 to the outside of the heating cooker 100. It is an opening part for doing.

  The grill heating chamber 14 has wall surfaces on the left, right, top, bottom, and back sides made of metal plates such as stainless steel and steel plates. Heating means such as an electric heater (not shown) is provided near the ceiling or bottom surface in the grill heating chamber 14, and the inside of the grill heating chamber 14 is heated by this heating means. The front side of the grill heating chamber 14 is covered with a door (not shown) so as to be opened and closed.

The left heating coil unit 3 and the right heating coil unit 4 are electromagnetic induction heating means for heating an object to be heated such as a pan placed on the top plate 2 by electromagnetic induction.
The right heating coil unit 4 includes a heating coil 42 configured by winding a collective wire obtained by twisting a plurality of thin copper wires into a spiral shape so that the outer diameter shape is circular. The heating coil 42 is placed above the support plate 13 of the main body case 1 while being placed on the coil base 41.

  In the first embodiment, the left heating coil unit 3 is illustrated as including an annular central heating coil 32 and four outer peripheral heating coils 33 provided on the outer peripheral side of the central heating coil 32. The central heating coil 32 and the outer peripheral heating coil 33 are placed above the support plate 13 of the main body case 1 while being placed on the coil base 31. The central heating coil 32 and the outer peripheral heating coil 33 are configured such that the heating output can be set independently.

  In the first embodiment, the left heating coil unit 3 and the right heating coil unit 4 are asymmetric in size, and the left heating coil unit 3 has a larger outer diameter than the right heating coil unit 4. The main body case 1 occupies almost half of the left side area. And the heating output by the left heating coil unit 3 is larger than the heating output by the right heating coil unit 4. The left heating coil unit 3 and the right heating coil unit 4 are arranged side by side with respect to the main body case 1, but the left heating coil unit 3 and the right heating coil unit 4 are arranged on the left and right center lines of the main body case 1. It is arranged at an asymmetrical position. The rear end portion of the left heating coil unit 3 is disposed in a positional relationship such that the rear end portion of the left heating coil unit 4 is located on the far side of the main body case 1 with respect to the rear end portion of the right heating coil unit 4.

  In the coil base 31 and the coil base 41, a plate-shaped or rod-shaped ferrite member (magnetic shield ferrite) (not shown) is provided as a magnetic flux leakage preventing member from the mounted heating coil.

  The electric heater 5 is a heating unit that heats an object to be heated such as a pan placed on the top plate 2 by radiation. As the electric heater 5, for example, a nichrome wire, a halogen heater, a radiant heater or the like is used. The electric heater 5 is arranged in a gap on the back side of the left heating coil unit 3 and the right heating coil unit 4 arranged on the left and right. Since the left heating coil unit 3 is larger than the right heating coil unit 4, the electric heater 5 is disposed on the far right side of the main body case 1 in the present embodiment.

The operation display unit 15 includes an operation unit that receives an operation from the user and outputs a signal corresponding to the operation, and a display unit that displays a heating condition, an operation state, and the like. As an operation means, arbitrary things, such as an operation button which receives pressing operation from a user, and a touch panel which receives touch operation from a user, can be used. Moreover, as a display means, arbitrary things, such as a liquid crystal screen and a lamp | ramp, can be used.
Instead of the operation display unit 15 provided on the top plate 2 or in addition to the operation display unit 15, an operation unit such as a button or a dial or a display unit such as a lamp may be provided on the front side of the main body case 1. Good.

  An operation display board 17 is arranged on the front side of the main body case 1. The operation display board 17 has a circuit that receives a signal from the operation display section 15 and sends the signal to the control board 16, and a circuit that controls the display operation by the operation display section 15 based on the control signal from the control board 16. Has been implemented. In the first embodiment, an example in which a control circuit related to operation and display is mounted on one substrate (operation display substrate 17) is shown, but these may be mounted on separate substrates.

  A control board 16 is provided inside the main body case 1 and on the right side. The control board 16 performs heating control via an inverter circuit (not shown) that drives the left heating coil unit 3 and the right heating coil unit 4, and is heated via a drive circuit for the electric heater 5 and the grill heating chamber 14. Take control. Further, the control board 16 receives a signal from the operation display unit 15 via the operation display board 17 and performs the above-described heating control based on this signal, and also operates the operation display part 15 via the operation display board 17. Display control is performed.

Next, the intake structure and exhaust structure of the heating cooker 100 will be described.
FIG. 3 is a perspective view of the cooking device according to Embodiment 1 with the top plate and the heating means removed. FIG. 4 is a perspective view of the air passage unit according to the embodiment.

  The air path unit A is an assembly of components for supplying air sucked from the outside of the main body case 1 into the main body case 1 as cooling air. Roughly, the fan unit 6, the substrate case 7, and the left A cooling duct 8 and a right cooling duct 9 are provided.

The fan unit 6 includes a fan case 61 and a fan 62 as a blowing means accommodated in the fan case 61. The fan 62 is a sirocco fan, for example, and its operation is controlled by a fan drive circuit mounted on the control board 16.
The fan unit 6 is installed inside the main body case 1 and below the main body intake port 11. When the fan 62 of the fan unit 6 operates, air outside the main body case 1 is sucked from the main body intake port 11.

  The substrate case 7 is a case for accommodating the control substrate 16 and includes a left substrate case 71 and a right substrate case 72. The left substrate case 71 and the right substrate case 72 are provided with an opening surface that is open on one surface, the two opening surfaces are butted together, and both are locked by locking means (not shown) to accommodate the control substrate 16. The outline of the case 7 is configured.

  The substrate case 7 accommodates the control substrate 16 and also serves as an air path for cooling air from the fan unit 6. The substrate case 7 is provided with a cooling air inlet (not shown) for allowing the cooling air from the fan case 61 to flow into the substrate case 7 on a part of the surface adjacent to the fan case 61. A cooling air outlet 73 for blowing cooling air to the outside of the substrate case 7 is opened at a position on the near side of the upper surface of the substrate case 7. Cooling air that has flowed into the substrate case 7 from the cooling air inlet (not shown) passes through the vicinity of the control substrate 16 in the substrate case 7 and cools the control substrate 16, and then enters the front side of the main body case 1. Then, the air flows out from the cooling air outlet 73 to the outside of the substrate case 7.

  The left cooling duct 8 and the right cooling duct 9 are ducts that discharge cooling air toward the left heating coil unit 3 and the right heating coil unit 4, respectively, and are entirely molded of plastic. The right cooling duct 9 is disposed at a position where at least a part of the right cooling duct 9 overlaps with the cooling air outlet 73 of the substrate case 7.

The right cooling duct 9 is installed between the upper surface of the support plate 13 and the lower surface (back surface) of the right heating coil unit 4 and has a function of blowing cooling air toward the right heating coil unit 4.
The lower surface of the right cooling duct 9 is disposed so as to face the cooling air outlet 73 of the substrate case 7, and the cooling air blown from the substrate case 7 flows into the right cooling duct 9. The upper surface 91 of the right cooling duct 9 is provided with a plurality of jet ports 92 formed so as to penetrate the upper surface 91. The jet port 92 is an opening formed to eject the cooling air toward the right heating coil unit 4. In the first embodiment, a plurality of jet ports 92 having the same diameter are provided, but jet ports 92 having different diameters may be provided.

The left cooling duct 8 is installed between the upper surface of the support plate 13 and the lower surface (back surface) of the left heating coil unit 3, and has a function of blowing cooling air toward the left heating coil unit 3.
The upper surface 81 of the left cooling duct 8 includes two surfaces having steps of an upper step surface 82 and a lower step surface 84. In the first embodiment, the upper step surface 82 has the largest area and is formed in an arc shape, and the lower step surface 84 is provided on the outer peripheral side of the upper step surface 82. Adjacent surfaces of the upper surface 82 and the lower surface 84 are connected by a side surface 85.

  The upper surface 82 is provided with a plurality of upper jet ports 86 formed so as to penetrate the upper surface 82, and the lower surface 84 is provided with a plurality of lower jet ports 88 formed so as to penetrate the lower surface 84. Is provided. The upper jet port 86 and the lower jet port 88 are openings formed to eject cooling air toward the left heating coil unit 3. In the first embodiment, the upper jet port 86 is configured by two types of jet ports having a large diameter and a small diameter. The size of the upper jet port 86 and the lower jet port 88 is not particularly limited, but for example, the diameter can be provided in a range of about 6 mm to 12 mm. In the first embodiment, an example is shown in which the diameters of the upper jet port 86 and the lower jet port 88 are different, but they may be the same.

  The left cooling duct 8 includes a left and right connecting portion 80 as a ventilation path through which cooling air can pass. By connecting the left and right connecting portions 80 to the right cooling duct 9, the cooling air in the right cooling duct 9 flows into the left cooling duct 8.

Next, the operation of the cooking device 100 will be described.
When an object to be heated such as a pan is placed on the top plate 2 and the operation display unit 15 is operated by the user to give a heating instruction, the control circuit mounted on the control board 16 is moved from the operation display unit 15. The energization to the heating means (left heating coil unit 3, right heating coil unit 4, electric heater 5) designated based on the information is started. Thereby, an object to be heated such as a pan on the top plate 2 is heated.

In parallel with the heating by the heating unit, the control circuit mounted on the control board 16 drives the fan 62.
When the fan 62 operates, air is sucked into the fan case 61 in the main body case 1 through the top plate air inlet 21 and the main body air inlet 11 (arrow X1 in FIG. 4). The sucked air is sent to the fan 62 and flows into the board case 7 from the cooling air inlet (not shown) of the board case 7 as cooling air, and generates heat components such as the control board 16 and the inverter in the board case 7. Is cooled (arrow X2 in FIG. 4). The cooling air that has passed through the substrate case 7 exits from the cooling air outlet 73 of the substrate case 7 and flows into the right cooling duct 9 (arrow X3 in FIG. 4).

  A part of the cooling air flowing into the right cooling duct 9 is ejected upward from the jet port 92 to cool the right heating coil unit 4 while being in contact with the right heating coil unit 4 (arrow X4 in FIG. 4). . The cooling air blown from the jet port 92 flows through the upper part of the support plate 13 toward the rear of the main body case 1, merges with the cooling air discharged from the main body exhaust port 12, and is discharged from the top plate exhaust port 22. The

  Further, part of the cooling air flowing into the right cooling duct 9 proceeds to the left side of the left cooling duct 8 through the left and right connecting portions 80 of the left cooling duct 8 (arrow X5 in FIG. 4). And it ejects upward from the upper stage jet port 86 and the lower stage jet port 88 provided in the left cooling duct 8, and cools the left heating coil unit 3 in contact with the left heating coil unit 3 (arrow X6 in FIG. 4). X7).

FIG. 5 is a schematic cross-sectional view of the vicinity of the left cooling duct 8 according to the first embodiment. FIG. 5 is a view for explaining the movement of the cooling air blown from the left cooling duct 8, and the shape and size of each part may be different from the actual one.
As shown in FIG. 5, the upper surface 81 of the left cooling duct 8 is formed in a step shape by the upper step surface 82 and the lower step surface 84, so the distance between each surface and the lower surface of the left heating coil unit 3 is different.

The lower step surface 84, which is a lower surface than the upper step surface 82 which is the highest surface, is separated from the lower surface of the left heating coil unit 3.
Therefore, the cooling air ejected from the lower jet port 88 contacts the lower surface of the left heating coil unit 3 while diffusing to the surroundings (arrow X7 in FIG. 5). In addition, the cooling air blown from the upper jet port 86 is relatively close to the lower surface of the left heating coil unit 3, and therefore intensively contacts the lower surface of the left heating coil unit 3 without being diffused much (see FIG. 5 arrow X6).

In this way, the cooling air blown from the upper jet port 86 and the lower jet port 88 respectively provided on the upper stage surface 82 and the lower stage surface 84 having different heights reaches the left heating coil unit 3 to be cooled. The degree of diffusion is different.
In the case of the first embodiment, cooling air is supplied to the left cooling duct 8 via the right cooling duct 9, but the place where the distance from the left and right connecting portions 80 in the left cooling duct 8 is closer than the nearest place. The air volume is too small. Thus, even in the same left cooling duct 8, when there are a location with a large air volume and a location with a small air volume, the upper surface 81 is lowered for the location with a small air volume (lower stage surface 84). By doing so, the distance between the lower step surface 84 and the left heating coil unit 3 to be cooled becomes relatively large and the cooling air diffuses to the surroundings, so that a wide range can be efficiently cooled even if the air volume is small. That is, the small amount of air supplied can be supplemented by the cooling air that diffuses by separating the distance between the upper surface 81 and the left heating coil unit 3.

  In the case of the first embodiment, the left cooling duct 8 and the right cooling duct 9 form a series of air passages, and the left cooling duct 8 is located on the downstream side of the cooling air, while the left heating coil unit 3 Since the heating output is larger than that of the right heating coil unit 4, higher cooling capacity is required. Conventionally, the cooling air cannot be effectively supplied to the left heating coil unit 3 that requires a higher cooling capacity. However, according to the first embodiment, as described above, the lower jet port 88 is provided by providing the lower step surface 84 on the upper surface 81 of the left cooling duct 8 and increasing the distance between the cooling duct and the left heating coil unit 3. Since the cooling air from is diffused, the left heating coil unit 3 can be efficiently cooled.

  The cooling air blown out from the upper jet port 86 and the lower jet port 88 of the left cooling duct 8 flows through the upper part of the support plate 13 toward the rear of the main body case 1 and is discharged from the main body exhaust port 12. Alternatively, the cooling air is combined with the cooling air from the jet port 92 and is discharged from the top plate exhaust port 22.

  As described above, according to the first embodiment, the upper surface 81 of the left cooling duct 8 has the upper step surface 82 and the lower step surface 84 having steps, and the upper jet port 86 and the lower jet port 88 are provided on the respective surfaces. Was provided. Since the upper surface 82 which is a relatively high surface is close to the heating coil, cooling air can be blown out intensively, and the lower surface 84 which is a relatively low surface is far from the heating coil. Cooling air can be diffused. Therefore, by adjusting the height of the upper surface 81 of the left cooling duct 8, efficient cooling corresponding to the object to be cooled such as heating means can be performed. Since the cooling capacity is adjusted by changing the air volume and the air speed of the cooling air according to the height of the upper surface 81 of the left cooling duct 8 and the arrangement of the upper surface 82 / lower surface 84, the cooling air supplied from the fan 62 is more efficiently used. It can be supplied to the left heating coil unit 3. Therefore, the cooling capacity for the left heating coil unit 3 can be increased without increasing the capacity of the fan 62, which contributes to cost reduction and energy consumption reduction.

  It should be noted that the diameter of the jet port provided in the upper stage surface 82 and the lower stage surface 84 of the left cooling duct 8 may be made smaller as the wind speed is lower. The lower step surface 84 provided in the vicinity of the outer periphery of the left cooling duct 8 as in the first embodiment has a low wind speed of the cooling air reaching the lower step surface 84 because the distance from the right cooling duct 9 is far. However, by reducing the diameter of the lower jet port 88, the wind speed of the cooling air blown from the lower jet port 88 can be increased. Moreover, the air volume of the cooling air sprayed intensively can be increased by making the diameter of the jet port of the upper stage surface 82 relatively large. For this reason, the cooling effect can be enhanced. When the diameters of the jet ports are set on the upper surface 82 and the lower surface 84 as described above, the number of jet ports on the lower surface 84 may be increased with respect to the number of jet ports on the upper surface 82.

  The diameter of the lower jet port 88 provided on the lower stage surface 84, which is a lower surface than the upper stage surface 82, is smaller than the diameter of the upper jet port 86 provided on the upper stage surface 82. You can also. That is, the lower surface 84 is intended to efficiently cool by diffusing the cooling air by separating the distance from the left heating coil unit 3 to be cooled. However, the diameter of the lower jet port 88 is further increased. By making it small, the wind speed can be increased and the diffusion of the cooling air can be further promoted.

  Note that the height of the upper surface 81 of the left cooling duct 8 can be set in accordance with the characteristics of the object to be cooled. In the left heating coil unit 3 having heating coils that are individually driven, such as the central heating coil 32 and the outer peripheral heating coil 33, the upper surface 81 of the left cooling duct 8 has different heights corresponding to the arrangement of each heating coil. Can be. Specifically, for example, the height of the upper surface 81 located below the heating coil that requires a higher cooling capacity is lowered. By doing in this way, efficient cooling can be performed using diffusion of cooling air.

  In the above description, the case where the two surfaces having the steps of the upper step surface 82 and the lower step surface 84 are provided has been described as an example. However, the number of surfaces (the number of steps) is not limited to this, and three You may provide the above surface (surface of three steps or more). In the above description, an example in which a plurality of surfaces having steps is provided on the upper surface 81 of the left cooling duct 8 is shown. However, a plurality of surfaces having steps may be provided on the upper surface 91 of the right cooling duct 9.

Embodiment 2. FIG.
FIG. 6 is a perspective view of the air passage unit A according to the second embodiment. FIG. 7 is a schematic cross-sectional view of the vicinity of the left cooling duct 8A according to the second embodiment. FIG. 7 is a view for explaining the movement of the cooling air blown from the left cooling duct 8A, and the shape and size of each part may be different from the actual one. In the second embodiment, the difference from the first embodiment will be mainly described. 6 and 7, the same reference numerals are given to the same components as those in the first embodiment.

  The left cooling duct 8A according to the second embodiment is characterized in that the side surface 85 is provided with a side surface jet port 89 (second jet port). The side jet port 89 is provided on the front side of the side surface 85 connected to the upper step surface 82 and the lower step surface 84. An operation display board 17 is arranged in the vicinity of the side jet port 89.

  In such a configuration, a part of the cooling air flowing into the left cooling duct 8A is jetted from the side jet port 89 to the outside of the left cooling duct 8A and is cooled while contacting the operation display board 17 ( Arrow Y1 in FIGS. 6 and 7).

  As described above, in the second embodiment, the side jet port 89 that blows the cooling air is provided on the side surface 85 that is continuous with the upper step surface 82 and the lower step surface 84 having steps. For this reason, cooling air can be supplied not only above the left cooling duct 8A but also to the outer peripheral side. Further, since the operation display board 17 is disposed downstream of the cooling air from the side jet port 89, the operation display board 17 can be effectively cooled without providing a cooling duct or member in addition to the left cooling duct 8A. Can do.

  In the above description, the built-in heating cooker has been described as an example, but the present invention can also be applied to a stationary heating cooker. In the above description, the left and right integrated cooling ducts in which the left cooling duct 8 and the right cooling duct 9 are communicated are described as examples. However, the cooling duct of the left heating coil and the cooling duct of the right heating coil are in communication. Not necessary.

  1 Body case, 2 Top plate, 2a Upper frame, 3 Left heating coil unit, 4 Right heating coil unit, 5 Electric heater, 6 Fan unit, 7 Board case, 8 Left cooling duct, 8A Left cooling duct, 9 Right cooling duct 11 Main body intake port, 12 Main body exhaust port, 13 Support plate, 14 Grill heating chamber, 15 Operation display section, 16 Control board, 17 Operation display board, 21 Top plate intake port, 22 Top plate exhaust port, 31 Coil base, 32 Central heating coil, 33 Outer peripheral heating coil, 41 Coil base, 42 Heating coil, 61 Fan case, 62 Fan, 71 Left board case, 72 Right board case, 73 Cooling air outlet, 80 Left and right connecting part, 81 Upper surface, 82 Upper stage Surface, 84 lower surface, 85 side surface, 86 upper surface, 88 lower surface, 9 aspect jet port 91 top, 92 jet ports, 100 cooker, A wind path unit.

Claims (7)

The body,
A top plate covering the upper surface of the main body;
Heating means disposed within the body;
A blowing means for supplying cooling air into the main body;
A cooling duct that is disposed below the heating means and has a plurality of jet openings formed on the upper surface for blowing the cooling air supplied by the blowing means toward the heating means;
An upper surface of the cooling duct has a plurality of surfaces having steps, and the jet port is provided on at least two of the plurality of surfaces. The plurality of surfaces having the steps of the cooling duct are configured such that the portion where the wind speed is low is relatively lower than the portion where the wind speed of the cooling air supplied from the blowing means is high. The cooking device according to claim 1, wherein The diameter of the air outlet provided in the lower surface is smaller than the diameter of the jet port provided in the higher surface among the plurality of surfaces having the step of the cooling duct. The heating cooker according to claim 1 or claim 2. The said heating means has a some heating coil which can set a heating output independently. The heating cooker as described in any one of Claims 1-3 characterized by the above-mentioned. The cooking device according to claim 4, wherein the height of the upper surface of the cooling duct is set in correspondence with the arrangement of each of the plurality of heating coils. The second jet port that blows out cooling air is provided on a side surface that is continuous with one surface having a step of the cooling duct and the other surface, according to any one of claims 1 to 5. Cooking device. The cooking device according to claim 6, wherein an operation board is disposed on the downstream side of the cooling air blown from the second jet nozzle.

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