JP2004311391A - Electromagnetic cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic cooker in which the number of revolution of a cooling fan of a blower is suppressed as much as possible, and in which high-heat-generating parts can be cooled down all the more efficiently while substantially reducing noise generated by this. <P>SOLUTION: This cooker is provided with a circuit board 32, a first circuit part 34 mounted on the circuit board 32, a second circuit part 36 with larger amount of heat than this, a cabinet 10 which houses the first and the second circuit parts 34, 36, and contains an intake port 14 and an exhaust port 16, a first blower 20 which cools both of the first and the second circuit parts 34, 36, and a second blower 40 which cools the second circuit parts 36 exclusively. Furthermore, the second blower 40 is arranged in the inside of the cabinet 10, and a flow velocity of an air current formed by the first blower 20 is further accelerated by using the second blower 40. A direction of the air current formed by the first and the second blowers 20, 40 are substantially the same. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electromagnetic cooker, and more particularly to an electromagnetic cooker having an electric circuit component for supplying a large current to an electromagnetic induction heating coil.

  The electromagnetic cooker uses a heating coil (electromagnetic induction coil) to form an eddy current at the bottom of the pot without using a flame, thereby causing the pot itself to generate heat, thereby being highly safe. In addition, the electromagnetic cooker is a very excellent cookware because it has high thermal efficiency and can save time and cost required for cooking. For this reason, electromagnetic cookers have become more and more popular in recent years at a rate exceeding that of conventional gas cookers.

  The electromagnetic cooker generally includes an induction heating-type heating coil and various electronic components for controllably supplying a large current thereto. These heating coils and electronic components generally need to be cooled using a blower with a cooling fan (propeller fan) to ensure their normal operation. Such electronic components generate extremely high amounts of heat during operation, and therefore require more cooling (for example, IGBTs and diode bridges) and those having relatively low heat generation (for example, capacitors). (Hereinafter, for convenience, such a component having a high calorific value is referred to as a high heat-generating component, and a relatively low component is referred to as a low heat-generating component.) Usually, a heat sink is fixed to such a high heat-generating component, and a cooling area is increased so as to increase a cooling effect.

  In addition, the cooling effect can be increased by increasing the rotation speed of the cooling fan of the blower. However, as the rotation speed increases, the noise generated by the cooling fan increases significantly, giving the user discomfort. In recent years, the current to be supplied to the heating coil has been increasing more and more, especially since electromagnetic cookers with higher cooking power have become popular. Under such circumstances, there is a strong demand for the development of a technique for more efficiently cooling high heat-generating components without giving the user discomfort when supplying a larger amount of current to the heating coil.

  Specifically, a conventional electromagnetic cooker includes a cooling path separated from an upper unit including a heating coil and a lower unit including a driving circuit unit, and a first unit for cooling the heating coil. A cooling fan motor is arranged in a cooling path of the upper unit, and a second cooling fan motor for cooling the drive circuit unit is arranged in a cooling path of the lower unit (for example, see Patent Document 1).

  In addition, another conventional electromagnetic cooker secures intake and exhaust paths by arranging an intake-only fan and an exhaust-only fan in a substantially closed main body, thereby efficiently cooling the equipment inside the main body. (For example, see Patent Document 2).

JP-A-3-114178 JP-A-11-354264

  However, according to Patent Document 1, by separating the cooling path for the upper unit and the lower unit, it is possible to prevent the exhaust of the lower unit from being mixed into the intake of the upper unit, thereby improving the cooling efficiency inside the upper unit. Although it can be performed, both the high heat-generating component and the low heat-generating component constituting the drive circuit unit are similarly cooled in the lower unit. It was necessary to increase the number of rotations of the cooling fan motor of No. 2 and noise from the motor could not be reduced.

  Further, according to Patent Document 2, by setting the main body in a substantially sealed state and providing an intake-only fan and an exhaust-only fan, it is possible to secure an intake / exhaust path and improve the cooling efficiency in the main body. Since these two fans are arranged at arbitrary positions in the main body, the high heat-generating parts and the low heat-generating parts are cooled similarly, especially when it is desired to cool the high heat-generating parts more sufficiently. The amount of noise must be increased, and noise due to an increase in the number of revolutions of the fan cannot be reduced, as in Patent Document 1.

  Accordingly, the present invention has been made to solve such a problem, and the rotation speed of a cooling fan of a blower is suppressed as much as possible, thereby effectively reducing noise generated by the heat generation component such as an IGBT. It is an object of the present invention to realize an electromagnetic cooker that can be cooled efficiently.

  The electromagnetic cooker of the present invention includes a circuit board, a first circuit component mounted on the circuit board, a second circuit component having a larger heat generation than the circuit board, and the first and second circuit components. It includes a housing that houses and includes an intake port and an exhaust port, a first blower that cools both the first and second circuit components, and a second blower that exclusively cools the second circuit component. Further, the second blower is disposed in the housing, and the flow velocity of the airflow generated by the first blower is further accelerated by using the second blower. Furthermore, the direction of the airflow generated by the first and second blowers is substantially the same.

  ADVANTAGE OF THE INVENTION According to the electromagnetic cooker of this invention, while reducing the rotation speed of each fan of a ventilation blower and a cooling blower, rotation noise is substantially reduced and a high heat generation component, such as IGBT, is efficiently cooled. be able to. Therefore, it is possible to realize an electromagnetic cooker having a higher cooking output without giving a user discomfort due to noise.

  Hereinafter, an embodiment of an electromagnetic cooker according to the present invention will be described with reference to the accompanying drawings. In the description of each embodiment, terms indicating directions (for example, “horizontal direction” and “vertical direction”) are used as appropriate to facilitate understanding, but this is for explanation only. Does not limit the invention.

Embodiment 1 FIG.
The electromagnetic cooker is generally classified into a stationary type which is installed and used on a table, and a built-in type which is installed and used in a system kitchen. The basic structures are the same in both. Here, Embodiment 1 according to the present invention will be described in detail below with reference to a stationary electromagnetic cooker shown in FIGS. 1 to 5. In FIG. 1 which is a perspective view of an electromagnetic cooker according to Embodiment 1 of the present invention, an electromagnetic cooker 1 generally includes a top plate 3 formed of glass or the like, two heating coils 4 disposed below the top plate 3, It includes a grill section 5, a dial type thermal power adjustment section 6, a display section 7, an intake opening section 8, and an exhaust opening section 9. Further, the electromagnetic cooker 1 has a housing 10 indicated by a broken line therein.

  FIG. 2 is a plan view of the housing 10 after removing the top plate 3 and the heating coil 4 of the electromagnetic cooker 1 of FIG. 1 when viewed from above. The internal configuration of the housing 10 is illustrated by being removed (the top plate of the air guide duct to be described later is also removed). In FIG. 2, the casing 10 has one intake port 14 at a position adjacent to the intake opening 8, and a plurality of minute exhaust ports 16 on the top plate 12 of the casing at a position corresponding to a position below the heating coil 4. Have. Although not shown in detail, the intake port 14 and the minute exhaust port 16 are in fluid communication with the intake opening 8 and the exhaust opening 9, respectively. In this way, an air communication passage (air passage) is formed by the intake opening 8, the intake opening 8 of the housing 10, the plurality of minute exhaust ports 16, and the exhaust opening 9.

  FIG. 3 is a sectional view taken along line III-III in FIG. As shown in FIGS. 2 and 3, the electromagnetic cooker 1 of the present invention generally includes a ventilation blower (first blower) 20 for sending air into the entire casing 10 and two heating coils 4. An electric circuit section 30 for controllably supplying a large current. The ventilation blower 20 has a ventilation fan 22 and is arranged adjacent to the intake port 14. The electric circuit unit 30 is housed in the housing 10 and is preferably disposed immediately below the heating coil 4 closer to the intake opening 8, but directly below the heating coil 4 near the exhaust opening 9. Alternatively, it is also possible to dispose immediately below both heating coils 4.

  The electric circuit unit 30 includes a plurality of low heat-generating components (first circuit components) 34, such as a circuit board 32 and a capacitor mounted thereon, which generate a relatively small amount of heat during operation and an amount of heat during operation such as an IGBT. And a plurality of relatively high heat generating components (second circuit components) 36 and a cooling blower (second blower) 40 for exclusively cooling only the high heat generating components 36.

  As is clear from the enlarged view of FIG. 4, the high heat generating component 36 is fixed to a pair of heat sinks 38a and 38b having a plurality of cooling fins 39 extending in the horizontal direction in order to increase a cooling effect (cooling area). (Four high heat-generating components 36 are fixed to each of the heat sinks 38a and 38b.) The heat sinks 38a and 38b have substantially the same shape, and are arranged such that the tip surfaces of the respective cooling fins 39 face each other and are separated from each other with a minute gap. Therefore, a plurality of spaces 50 (cooling chambers) are formed between the cooling fins 39 of the heat sinks 38a and 38b. Since each of the heat sinks 38a and 38b has a different potential, it is preferable to provide an insulating member (not shown) between them.

  The cooling blower 40 has a cooling fan 42 and a wind guide duct 44 for accommodating the cooling fan 42 and guiding the formed airflow to the heat sinks 38a and 38b efficiently. Although the air guide duct 44 and the heat sinks 38a and 38b are close to each other, the cooling fan 42 and the heat sinks 38a and 38b have a length of about half the length of the air guide duct 44 in order to increase the static pressure in the air guide duct 44. Placed at a distance.

  Next, the operation of the electromagnetic cooker 1 according to the first embodiment will be described below. When the electromagnetic cooker 1 is used, the heating coil 4, the low heat generating component 34, and the high heat generating component 36 generate heat, and the ventilation blower 20 operates to cool them. The ventilation blower 20 can increase the static pressure in the housing 10 above the atmospheric pressure. Thus, the flow (airflow) of the air taken in from the ventilation opening 20 through the intake opening 8 first cools the low heat generating component 34 and the high heat generating component 36, and the airflow exhausted through the plurality of minute exhaust ports 16. Strikes the heating coil 4 and cools it. The airflow that has cooled the heating coil 4 is exhausted from the exhaust opening 9.

  On the other hand, the cooling blower 40 operates in a state where the ventilation blower 20 is operated, and can accelerate the flow velocity of the airflow generated by the ventilation blower 20. That is, the cooling blower 40 can form a higher static pressure in the air guide duct 44 than the static pressure in the housing 10. In this way, the airflow blown out from the airflow duct 44 has a higher flow velocity, so that the high heat generation component 36 can be cooled more efficiently than the airflow formed only by the ventilation blower 20.

  As described above, in the electromagnetic cooker 1 of the present invention, since the cooling blower 40 for exclusively (intensively) cooling only the parts that need to be cooled more is provided separately, the rotation of the ventilation blower 20 is increased. The number can be minimized. Further, since the cooling blower 40 accelerates the flow velocity of the airflow generated by the ventilation blower 20, the airflow having a flow velocity capable of sufficiently cooling the high heat generation component 36 without increasing the rotation speed of the cooling fan 42 so much. Can be realized. As a matter of fact, the air flow rate formed by the cooling blower 40 may be about 1/3 to 1/2 of the air flow rate formed by the ventilation blower 20, and the size (fan diameter) of the cooling blower 40 is It has been confirmed that about よ い to ／ of the size of the ventilation blower 20 is sufficient. Accordingly, the noise due to the rotation of the cooling fan 42 can be considerably smaller than that of the ventilation fan 22.

  Further, as shown in FIGS. 2 and 3, since the directions of the airflow generated by the ventilation blower 20 and the cooling blower 40 are substantially the same, the cooling airflow is different from the case where the formed airflow directions are different. The blower 40 can obtain an airflow having a higher flow velocity. In other words, the cooling blower 40 can supply an airflow having a predetermined airflow velocity with a sufficiently high cooling effect at a lower rotation speed. Thus, the rotation speeds of the fans 22 and 42 of the ventilation blower 20 and the cooling blower 40 can be reduced, and the rotation noise can be substantially reduced.

  In addition, as shown in FIG. 4, the cooling fins 39 of the heat sinks 38a and 38b according to the first embodiment form a cooling chamber 50, and are blown out from a wind guide duct 44 close to the heat sinks 38a and 38b. Since substantially all the air flow is guided into the cooling chamber 50, the heat sinks 38a and 38b can be cooled more efficiently. That is, according to the first embodiment, the accelerated airflow is guided into the cooling chamber 50, so that the high heat-generating component 36 can be extremely efficiently cooled by the cooling fan 42 having a low rotation speed. Thus, the electromagnetic cooker 1 having the quieter blower 40 can be realized.

  In the above-described embodiment, the cooling chamber 50 is formed between the pair of heat sinks 38a and 38b arranged so as to face each other and to be separated from each other. Alternatively, as shown in FIG. 5, the high heat generating component 36 is mounted in parallel with the circuit board 32, and one heat sink 38 having a plurality of cooling fins 39 extending in the vertical direction is provided on the high heat generating component 36. , And a cooling hood 52 is disposed so as to cover above the heat sink 38. At this time, the cooling chamber 50 is formed between the cooling fin 39 and the cooling hood 52. The cooling chamber 50 thus obtained is disposed close to the air guide duct 44, and substantially all of the airflow blown out from the air guide duct 44 enters the cooling chamber 50, as in the first embodiment. Since the heat sinks 38a and 38b are guided, the heat sinks 38a and 38b can be cooled more efficiently. Thus, the electromagnetic cooker 1 having the quieter cooling blower 40 can be realized.

  Further, in the above-described embodiment, the cooling blower 40 is disposed adjacent to the air flow upstream of the heat sink 38, but may be disposed adjacent to the air flow downstream. However, the cooling blower arranged on the downstream side of the airflow sucks the airflow from the plurality of cooling chambers 50, but the airflow is blown out from the cooling chamber 50, and naturally is not blown out from the cooling fins 39. In addition, the flow velocity of the air flow to be sucked has a variation due to the position. Therefore, when the cooling fan 42 rotates in the direction traversing the variable airflow, a larger rotation noise is generated. Therefore, the cooling blower 40 is preferably arranged adjacent to the heat sink 38 on the upstream side of the airflow.

Embodiment 2 FIG.
A second embodiment according to the present invention will be described in detail below with reference to FIGS. The electromagnetic cooker 2 according to the second embodiment has the same configuration as that of the electromagnetic cooker 1 according to the first embodiment except for the arrangement configuration of the electric circuit unit 30, and a description of overlapping contents will be omitted. I do.

  According to the electromagnetic cooker 2 according to the second embodiment, as shown in FIG. 6, the cooling blower 40 is disposed immediately downstream of the ventilation blower 20, and the airflow generated by the ventilation blower 20 is reduced. Increase the flow rate. Further, the direction of the airflow generated by each of the blowers 20, 40 is substantially the same as in the first embodiment.

  Further, in the electric circuit unit 30 of the second embodiment, the high heat-generating component 36 and the pair of heat sinks 38a and 38b are disposed on the downstream side of the airflow of the cooling blower 40 and substantially at the center of the circuit board 32, The low heat generating components 34 are arranged on both sides of the circuit board 32 with the high heat generating components 36 interposed therebetween.

  In the electromagnetic cooker 2 thus configured, the airflow generated by the ventilation blower 20 and the cooling blower 40 cools the low heat-generating component 34 and the high heat-generating component 36 and partially heats through the minute exhaust port 16. Although the coil 4 is cooled, a part of the coil 4 collides with the end wall 18 of the housing 10 and flows backward to the vicinity of the intake port 14, so that a so-called circulating flow is formed. Since the circulating flow is an air flow after cooling the low heat generating component 34 and the high heat generating component 36, its temperature is higher than the air flow taken in from the atmosphere. Therefore, the ventilation duct 44 of the cooling blower 40 according to the second embodiment is longer than the ventilation duct of the first embodiment, and is substantially separated from the high heat generating component 36 (heat sink 38). It is designed to extend up to 20. Thereby, the heat sink 38 can be efficiently cooled without the high-temperature circulating flow being taken into the air guide duct 44. Thus, the rotation speed of the cooling fan 42 of the cooling blower 40 can be reduced, and the noise generated by the cooling fan 42 can be reduced.

Embodiment 3 FIG.
The third embodiment according to the present invention will be described below in detail with reference to FIG. The electromagnetic cooker according to the third embodiment is different from the electromagnetic cookers according to the first and second embodiments except that the rotation direction of the cooling fan 42 of the cooling blower 40 and the rotation direction of the ventilation fan 22 of the ventilation blower 20 are different. Since it has the same configuration as the units 1 and 2, the description of overlapping contents will be omitted.

  As described above, according to the electromagnetic cookers 1 and 2 of the first and second embodiments, the cooling hood 22 of the ventilation blower 20 and the cooling fan 42 of the cooling blower 40 rotate in the same direction. Was designed to. However, according to the electromagnetic cooker according to the third embodiment, as shown in FIG. 8, the rotation directions of the cooling hood 22 and the cooling fan 42 are different from each other.

Generally, an airflow formed by a propeller fan has an airflow vector composed of an airflow direction component and a circumferential direction component orthogonal to the airflow direction when viewed microscopically. When two propeller fans rotating in the same direction are arranged in series in the airflow direction, the airflow formed by the upstream fan collides with the downstream fan and gives kinetic energy thereto, and the flow velocity is rather increased. May be smaller. However, when the upstream fan and the downstream fan rotate in different directions from each other, the airflow vectors generated by the respective fans are different from each other (that is, since the orthogonal components are in opposite directions), the airflow of the upstream fan is different. Is not reduced by the downstream fan.
In the third embodiment, the rotation directions of the cooling fan 22 and the cooling fan 42 are designed to be different from each other in order to prevent the flow velocity of the airflow generated by the cooling fan 22 from being reduced by the cooling fan 42. ing. Thus, macroscopically, the static pressure in the air guide duct 44 can be substantially increased compared to the static pressure in the housing 10, and the heat sink 38 and thus the high heat-generating component 36 can be cooled more efficiently. be able to.

  In the above embodiment, the cooling hood 22 of the ventilation blower 20 and the cooling fan 42 of the cooling blower 40 have been described as propeller fans. However, as will be easily understood by those skilled in the art, Any type of fan, such as a sirocco fan and a turbo fan, can be used to configure the electromagnetic cooker of the present invention.

Embodiment 4 FIG.
A fourth embodiment according to the present invention will be described below in detail with reference to FIGS. The electromagnetic cooker according to the fourth embodiment further includes at least one air guide plate between the ventilation blower 20 and the cooling blower 40, except that the electromagnetic cooker according to the first to third embodiments is further provided. Since it has the same configuration as that of the container, the description of the overlapping contents will be omitted.

  Referring to FIG. 9, as described above, the electromagnetic cooker 51 according to the fourth embodiment has at least one air guide plate 46 between the ventilation blower 20 and the cooling blower 40. The main surface of the air guide plate 46 is disposed so as to be substantially parallel to the direction of the airflow formed by the ventilation blower 20. Accordingly, when viewed microscopically, the circumferential component collides with the air guide plate 46 and is rectified without disturbing the airflow direction component of the airflow vector. Therefore, when viewed macroscopically, the air pressure flowing from the ventilation blower 20 to the cooling blower 40 does not diffuse in the circumferential direction, and the static pressure at the upstream side of the cooling blower 40 can be substantially increased. That is, even when the cooling blower 40 having the same cooling capacity is used, the static pressure on the upstream side of the cooling blower 40 is increased by using the baffle plate 46 to flow into the heat sink 38. The air flow can be increased. Thus, the heat sink 38 and thus the high heat-generating component 36 can be cooled even more efficiently.

  As described above, the air guide plate 46 does not impede the airflow direction component of the airflow vector, but rectifies the circumferential direction component, and substantially increases the static pressure upstream of the cooling blower 40. , Can have any shape. For example, as shown in FIG. 9 and FIG. 10A, two air guide plates 46 assembled so as to be orthogonal to each other may be arranged downstream of the ventilation blower 20. At this time, one air guide plate 46a is arranged parallel to the circuit board 32 and the other air guide plate 46b is arranged perpendicular to the circuit board 32, as shown in FIG. As described above, the air guide plates 46a and 46b may be arranged in a direction irrelevant to the main surface of the circuit board 32. That is, the direction of the normal to the main surfaces of the air guide plates 46a and 46b is arbitrary.

  Further, the two air guide plates 46 shown in FIGS. 10 (a) and 10 (b) are assembled so that their main surfaces are orthogonal to each other, but are assembled so as to form an arbitrary angle other than a right angle. (Not shown). Further, as shown in FIG. 10C, the plurality of air guide plates 46 may be configured in a lattice shape. At this time, the normal direction of the main surface of each air guide plate 46 is also arbitrary.

  As described above, at least one baffle plate 46 may be used to substantially increase the static pressure upstream of the cooling blower 40 and to cool the heat sink 38 and thus the high heat component 36 even more efficiently. In addition to this, the number of rotations of the cooling fan 42 can be reduced, and the rotational noise of the fan can be significantly reduced.

FIG. 1 is a perspective view showing a stationary electromagnetic cooker according to a first embodiment of the present invention. FIG. 2 is a partially broken plan view of the electromagnetic cooker shown in FIG. 1 after removing a top plate and a part of a top plate of a housing. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a perspective view showing the heat sink, the cooling chamber, and the cooling blower shown in FIG. FIG. 5 is a perspective view showing an alternative heat sink, cooling chamber, and cooling blower. FIG. 6 is a partially broken plan view similar to FIG. 2 of the electromagnetic cooker according to the second embodiment. FIG. 7 is a sectional view similar to FIG. FIG. 8 is an enlarged cross-sectional view illustrating a rotation direction of a cooling hood of a ventilation blower and a cooling fan of the cooling blower according to the third embodiment. FIG. 9 is a sectional view similar to FIG. 3 of the electromagnetic cooker according to the fourth embodiment. FIG. 10 is an enlarged view of the cooling fan of the air guide plate and the ventilation fan.

Explanation of reference numerals

1, 2, 51 electromagnetic cooker, 3 top plate, 4 heating coil, 5 grill, 6 dial type thermal power adjustment, 7 display, 8 intake opening, 9 exhaust opening, 10 housing, 12 top plate 14 Intake port, 16 minute exhaust port, 18 end wall, 20 ventilation blower (first blower), 22 ventilation fan, 30 electric circuit section, 32 circuit board, 34 low heat generation part (first circuit part) 36 high heat generation Components (second circuit components), 38 heat sink, 39 cooling fins, 40 cooling blower (second blower), 42 cooling fan, 44 wind guide duct, 46 wind guide plate, 50 cooling chamber.

Claims (13)

An electromagnetic cooker,
A circuit board,
A first circuit component mounted on a circuit board, a second circuit component having a larger heat generation than the first circuit component,
A housing that houses the first and second circuit components and includes an intake port and an exhaust port;
A first blower for cooling both the first and second circuit components;
An electromagnetic cooker comprising a second blower exclusively cooling a second circuit component. The electromagnetic cooker according to claim 1,
A second blower is disposed within the housing,
An electromagnetic cooker, wherein the flow velocity of the airflow generated by the first blower is further accelerated by using the second blower. It is an electromagnetic cooker according to claim 2,
An electromagnetic cooker characterized in that the directions of the airflow generated by the first and second blowers are substantially the same. The electromagnetic cooker according to any one of claims 1 to 3, wherein
A heat sink fixed to the second circuit component;
An electromagnetic cooker, wherein the second blower cools a heat sink. The electromagnetic cooker according to any one of claims 1 to 4, wherein
The electromagnetic cooker, wherein the second blower is disposed upstream of the second circuit component in the airflow. The electromagnetic cooker according to any one of claims 1 to 5, wherein
An electromagnetic cooker, wherein the first blower is disposed near an intake port of a housing and blows air into the entire housing. The electromagnetic cooker according to any one of claims 1 to 6, wherein
A wind guide duct disposed upstream of the heat sink and extending from the first blower to the second circuit component;
An electromagnetic cooker, wherein the second blower is arranged in the air duct. The electromagnetic cooker according to any one of claims 1 to 7,
Further comprising a cooling chamber covering the heat sink,
An electromagnetic cooker, wherein the airflow from the air guide duct flows substantially into the cooling chamber. An electromagnetic cooker according to any one of claims 1 to 8,
The first and second blowers have first and second fans, respectively,
An electromagnetic cooker wherein the rotation directions of the first and second fans are different from each other. The electromagnetic cooker according to any one of claims 1 to 9, wherein
Further comprising at least one baffle plate disposed between the first and second blowers;
An electromagnetic cooker, wherein a main surface of the air guide plate extends substantially parallel to a direction of an airflow generated by the first blower. The electromagnetic cooker according to claim 10,
An electromagnetic cooker characterized in that two air guide plates intersect at a predetermined angle. The electromagnetic cooker according to claim 10,
An electromagnetic cooker, wherein a plurality of air guide plates are configured in a grid. The electromagnetic cooker according to any one of claims 1 to 12, wherein
Further comprising a heating coil arranged near the exhaust port,
An electromagnetic cooker wherein the heating coil is cooled by an airflow exhausted from an exhaust port.

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