JPH11185947A - Induction cookwear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cooling efficiency while ensuring the efficiency of a heating coil by providing the heating coil generating a high frequency magnetic field in a lower part of a top plate and a cooling air passage of which clearance is sequentially reduced from the windward side toward the leeward side between a top face of the heating coil and the top plate. SOLUTION: A heating coil 5 generating a high frequency magnetic field is provided in a lower part of a top plate 1 and is supported by a coil support leg part 9 rising from a heating coil fixing plate 7. Moreover, a cooling air passage 11 is provided between a top face of the heating coil 5 and the top plate 1 so that cooling air flows from the windward side fa toward the leeward side fb by a cooking fan in the cooling air passage 11. In this case, a coil support leg 9 on the windward side fa is shorter than a coil support leg 9 on the leeward side fb in the cooling air passage 11. Consequently, the heating coil 5 is inclined by an angle of θ deg. for shaft core X so that the cooling air passage 11 of which clearance is sequentially reduced from the windward side fa toward the leeward side fb is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an induction heating cooker.

[0002]

2. Description of the Related Art In general, an induction heating cooker has a structure in which a heating coil for generating a high-frequency magnetic field is provided below a top plate on which a pot or the like is placed.

[0003]

The smaller the gap between the heating coil for generating the high-frequency magnetic field and the top plate, the higher the efficiency of the heating coil becomes. On the other hand, considering the cooling of the heating coil, the cooling air It is desirable that the gap is large so that the air flows well.

Accordingly, an object of the present invention is to provide an induction heating cooker capable of improving the cooling efficiency while securing the efficiency of the heating coil.

[0005]

In order to achieve the above object, the present invention firstly provides a heating coil for generating a high-frequency magnetic field below a top plate, so that the upper surface of the heating coil is connected to the top plate. In between, a cooling air passage is provided in which the passage gap is gradually reduced on the leeward side with respect to the leeward side. Thereby, an efficient flow of the cooling air is secured.

Secondly, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A deflecting plate which is inclined upward toward the cooling air passage is provided on the windward side to make the cooling air intake gap larger than the cooling air passage gap. Thereby, the cooling air is guided toward the cooling air passage, and a reliable flow of the cooling air is ensured.

In this embodiment, a heat-generating component such as an electronic circuit can be cooled by attaching the heat-generating component to the deflection plate through which the cooling air flows.

Third, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path through which cooling air flows from below the heating coil toward the cooling air passage, and chamfering at least one opening edge of the heating coil cooling air guide path. As a result, a smooth flow of the cooling air from the heating coil cooling air guide path to the cooling air passage is ensured.

Fourth, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path through which cooling air flows from below the heating coil toward the cooling air passage, while cooling air flowing along the lower surface of the heating coil interferes with cooling air flowing through the cooling air passage. And a partition member for preventing the occurrence of the vibration. Thereby, interference of the cooling air is eliminated, and a smooth flow of the cooling air is ensured.

Fifth, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A cooling fan for guiding a cooling air flow from below the heating coil toward the cooling air passage by a cooling fan, and at a lower portion of the heating coil, heat from a heat-generating component is cut off to heat the cooling air. A guide wall is provided for leading to the coil cooling air guide path, and an intake port for taking in low-temperature air is provided on the guide wall. As a result, the cooling air is reliably influenced by heat from the heat-generating components, and a reliable flow toward the heating coil cooling air guide path is ensured.

Sixth, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path in which cooling air blown from a cooling fan outlet flows from below the heating coil toward the cooling air passage;
The shape of the cooling fan outlet and the shape of the heating coil cooling air guide path are substantially similar to each other, and the cross-sectional area is equal to or smaller than the cross-sectional area of the heating coil cooling air guide path. Thereby, the cooling air blown out from the cooling fan outlet is
The heating coil is reliably fed into the cooling air guide path.

Seventh, a heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path in which cooling air blown from a cooling fan outlet flows from below the heating coil toward the cooling air passage;
The cross-sectional area of the cooling fan outlet is larger than the cross-sectional area of the heating coil cooling air guide path. Thereby, while the cooling air blown out from the cooling fan outlet is sent into the heating coil cooling air guide path, a part of the cooling air flow passing through the bottom surface of the heating coil is secured, and the bottom surface of the heating coil is secured. Cooling.

Eighthly, a top plate and a heating coil for generating a high-frequency magnetic field below the top plate are provided. Provide a cooling air outlet that blows cooling air in a concentrated manner. As a result, the cooling wind having a high flow velocity hits the region of the heating coil where the calorific value is the highest, so that the region is cooled intensively.

Ninth, a first heating coil for generating a high-frequency magnetic field and inductively heating a low-resistance, low-permeability pot under the top plate, and a high-resistance, high-permeability material And a second heating coil for inductively heating the pan is provided, and a heating coil cooling device for directly cooling the first heating coil is arranged at least below the first heating coil. Accordingly, the first heating coil, which generates a larger amount of heat than the second heating coil during the induction heating, is directly cooled by the heating coil cooling device, so that a reliable cooling state can be obtained.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a top plate showing a part of the induction heating cooker 3, and a pot made of iron, aluminum, copper or the like is placed on the top of the top plate 1. A heating coil 5 for generating a high-frequency magnetic field is provided at a lower portion of the top plate 1, and the heating coil 5 is a coil supporting leg 9 rising from a heating coil fixing plate 7.
Supported by A cooling air passage 11 is provided between the upper surface of the heating coil 5 and the top plate 1, and the cooling air passage 11 is moved from the windward side fa on the left side of the drawing to the leeward side fb by a cooling fan (not shown) as shown by an arrow. Cooling air flows toward it.

The cooling air passage 11 is set so that the passage gap gradually decreases from the windward side fa toward the leeward side fb, that is, A> B.

From the windward side fa to the leeward side f of the cooling air passage 11
As a specific means for sequentially reducing the passage gap toward b, the coil support leg 9 on the windward side fa supporting the heating coil 5 is shorter than the coil support leg 9 on the leeward side fb. As a result, the heating coil 5 is inclined by θ ° with respect to the axis X, so that the passage gap gradually decreases from the windward side fa to the leeward side fb between the upper surface of the heating coil 5 and the top plate 1. An air passage 11 is formed.

As means for obtaining the cooling air passage 11 in which the passage gap is gradually reduced from the windward side fa to the leeward side fb,
It is not specified in the above embodiment.

For example, as shown in FIG. 2, the length of the coil support leg 9 for supporting the heating coil 5 is set to the leeward side fa and the leeward side f.
It is also possible to adopt a structure in which the cooling air passage 11 in which the passage gap gradually decreases from the windward side fa to the leeward side fb by setting the heating coil fixing plate 7 to be the same as that of the cooling air passage 11b.

Alternatively, as shown in FIG.
A biasing spring 13 for constantly biasing the heating coil 5 upward is provided on the coil supporting leg 9 for supporting the gap, and a gap adjusting member 15 having different dimensions is provided between the heating coil 5 and the upper surface top plate 1. The cooling air passage 11 may be formed such that the passage gap gradually decreases from the windward side fa to the leeward side fb by being interposed against the urging spring 13.

Alternatively, as shown in FIG. 4, a tapered surface 17 on the upper surface of the heating coil is formed on the upper surface of the heating coil 5 provided below the top plate 1 such that the gap between the top plate 1 and the passage is A> B. By doing so, a structure in which the cooling air passage 11 in which the passage gap gradually decreases from the windward side fa to the leeward side fb may be formed.

Alternatively, as shown in FIG. 5, on the lower surface of the top plate 1, a passage gap with the upper surface of the heating coil 5 is A> B.
By forming the tapered surface 19 so that
A structure in which the cooling air passage 11 in which the passage gap is gradually reduced from a to the leeward side fb may be formed.

According to the induction heating cooker 3 configured as described above, a pot or the like set on the top plate 1 is heated by induction heating by the heating coil 5.

At the time of this induction heating, the flow of the cooling air flowing in the cooling air passage 11 from the windward side fa to the leeward side fb is ensured, and the heating coil 5 is cooled.

FIG. 6 shows a second embodiment in which the cooling air flows through the cooling air passage 11 efficiently.

That is, a heating coil 5 for generating a high-frequency magnetic field is provided below the top plate 1, and the heating coil 5 is supported by a coil supporting leg 9 rising from the heating coil fixing plate 7.
Supported by Between the upper surface of the heating coil 5 and the top plate 1, there is provided a cooling air passage 11 having substantially the same passage gap from the windward side fa to the leeward side fb. In the cooling air passage 11, cooling air flows from a windward side fa on the left side of the drawing to a leeward side fb by a cooling air fan (not shown) as shown by an arrow.

On the windward side fa of the cooling air passage 11, there is provided a deflecting plate 21 which is inclined upward toward the cooling air passage 11. The gap A between the cooling air inlets of the deflecting plate 21 is set to be larger than the passage gap B of the cooling air passage 11, so that the cooling air can be easily taken in.

The deflecting plate 21 has a heating component 2 such as an electronic component.
3 is attached, and the deflection plate 21 is formed of a material having excellent heat conductivity.

Therefore, according to the second embodiment, the cooling air is guided and guided by the deflecting plate 21 and reliably sent to the cooling air passage 11. As a result, a reliable flow of the cooling air is ensured in the cooling air passage 11, and the heating coil 5 is cooled.

The heat generating component 23 is cooled by cooling air flowing along the deflecting plate 21. Therefore, a cooling device dedicated to the heat-generating component is not required.

In the second embodiment, the gap of the cooling air passage 11 may be gradually reduced from the windward side to the leeward side.

FIGS. 7 and 8 show the heating coil cooling air guide path 2.
5 shows a third embodiment in which a good flow of the cooling air flowing from the cooling air passage 5 to the cooling air passage 11 can be ensured.

That is, a heating coil 5 for generating a high-frequency magnetic field is provided below the top plate 1, and the heating coil 5 is a coil supporting leg 9 rising from the heating coil fixing plate 7.
Supported by Between the upper surface of the heating coil 5 and the top plate 1, there is provided a cooling air passage 11 having substantially the same flow passage gap over the entire area.

The heating coil 5 includes a heating coil base 27 and a heating coil wire 29 wound around the heating coil base 27. Heating coil base 27 at center
The inside of the cylindrical body 31 rising from the cooling air passage 11
The cooling air guide path 25 communicates with the cooling coil, and the cooling air is sent from below by a cooling fan 33 disposed below.

The upper and lower inner edges of the cylindrical body 31 forming the heating coil cooling air guide path 25 are chamfered.

The chamfer may be either upper or lower.

Therefore, according to the third embodiment, the cooling air can be smoothly flown along the upper and lower surfaces of the heating coil 5 by the chamfer 35. In particular, a smooth flow from the heating coil cooling air guide path 25 to the cooling air passage 11 is ensured, and the heating coil 5 is cooled. In this case, as shown in FIG. 9, in addition to the chamfer 35, the upper surface of the heating coil 5 is tapered from the center of the heating coil cooling air guide path 25 toward the outer periphery of the heating coil.
May be adopted. Thereby, the cooling air passage 11
A smooth flow can be obtained.

FIG. 10 shows the cooling air passage 11 and the heating coil 5.
FIG. 13 shows a fourth embodiment in which cooling air flows smoothly on the lower surface.

That is, a heating coil 5 for generating a high-frequency magnetic field is provided below the top plate 1, and the heating coil 5 is a coil supporting leg 9 rising from the heating coil fixing plate 7.
Supported by Between the upper surface of the heating coil 5 and the top plate 1, a cooling air passage 11 having substantially the same flow path cross-sectional area is provided over the entire region.

A substantially central portion of the heating coil 5 is a heating coil cooling air guide passage 25 communicating with the cooling air passage 11, so that cooling air is sent from below by a cooling fan 33 disposed below. It has become.

In the heating coil, a partition member 39 is extended from the outer peripheral edge along the top plate 1, and an extended end thereof is a bent portion 39a bent downward. Partition member 39
Upper surface functions as a guide wall surface for guiding the cooling air passing through the cooling air passage 11 along the top plate 1. The lower surface of the partition member 39 functions as a guide wall surface for guiding the cooling air passing through the lower surface of the heating coil 5 downward by the bent portion 39a without interfering with the cooling air flowing through the cooling air passage 11 side. ing.

Therefore, according to the fourth embodiment, the cooling air sent out by the cooling fan 33 flows from the heating coil cooling air guide passage 25 through the cooling air passage 11. On the other hand, part of the cooling air sent by the cooling fan 33 flows through the lower surface of the heating coil 5 to cool the heating coil 5. At this time, the cooling air passage 11
The flow of the cooling air passing through the top plate 1 is secured by the partition member 39. At the same time, the cooling air that has passed through the lower surface of the heating coil 5 flows downward without interfering with the cooling air that has passed through the cooling air passage 11, so that a favorable flow of each cooling air can be obtained.

FIG. 11 shows a fifth embodiment in which cooling air can be sent in without being affected by heat.

That is, a duct-like guide wall 43 that surrounds the cooling fan 33 and blocks heat from the heat-generating component 41 and guides cooling air to the heating coil cooling air guide path 25 is provided below the heating coil 5. Provide.

The guide wall 43 has a cooling fan air guide plate 45 and is desirably formed of a heat insulating material. The partition member 39 is located above the guide wall 43.
The lower part is supported by a heating coil fixing plate 7, respectively.

The guide wall 43 has a ventilation hole 46 through which the cooling air flowing on the lower surface of the heating coil 5 flows out along the partition member 39, and an intake port A47 for taking in low-temperature air inside the main body. Is provided.

Further, the induction wall 4 is also provided on the heating coil fixing plate 7.
An intake port B49 for taking in outside air into the inside 3 is provided.

The other components are the same as those shown in FIG. 10, and the same reference numerals are used to omit detailed description.

Therefore, according to the fifth embodiment, the rotation of the cooling fan 33 causes the cooling air taken in from the outside air inlet 49 to flow from the heating coil cooling air guiding passage 25 through the cooling air passage 11. . On the other hand, the cooling air passing through the lower surface of the heating coil 5 flows along the partition member 39 through the ventilation holes 46, and the heating coil is cooled.

At this time, since the cooling air is not directly affected by the heat of the heat generating member 41 and the like, the cooling air can be efficiently cooled.

FIG. 12 shows a sixth embodiment in which the cooling air from the cooling fan outlet 51 can be reliably sent to the heating coil cooling air guide path 25.

That is, a heating coil 5 for generating a high-frequency magnetic field is provided below the top plate 1, and the heating coil 5 is supported by a coil supporting leg 9 rising from the heating coil fixing plate 7.
Supported by Between the upper surface of the heating coil 5 and the top plate 1, there is provided a cooling air passage 11 having the same flow passage cross-sectional area over the entire region.

The central portion of the heating coil 5 is a heating coil cooling air guide passage 25 communicating with the cooling air passage 11, and cooling air is blown by a cooling fan outlet 51 of a cooling fan 33 arranged below. It is sent from below.

The cooling fan 33 is a sirocco fan. The shape of the cooling fan outlet 51 is substantially the same as the shape of the heating coil cooling air guide path 25, in this embodiment, a circular shape, and the cross-sectional area d is the cross section of the heating coil cooling air guide path 25. It is set smaller than the area D.

The cooling fan 33 may be an axial fan. Further, the cross-sectional area of the cooling fan outlet 51 may be substantially the same as the cross-sectional area of the heating coil cooling air guide path 25.

Therefore, according to the sixth embodiment, the cooling air blown from the cooling fan outlet 51 is efficiently and reliably sent into the heating coil cooling air guide path 25. The cooling air sent into the heating coil cooling air guide path 25 cools the upper surface of the heating coil 11 when flowing through the cooling air passage 11.

The cooling fan outlet 51 is connected to an air duct 5 extending from the cooling fan 33 as shown in FIG.
3 may be adopted. Thereby, the degree of freedom of design in which the attitude of the cooling fan 33 can be freely changed is increased, and the height H can be reduced without lowering the cooling performance.

FIG. 14 shows a seventh embodiment for compensating for a reduction in the cooling performance of the upper surface of the heating coil.

That is, a temperature sensor 55 for monitoring the heating temperature is provided on the bottom surface of the top plate 1 above the heating coil cooling air guide path 25.

A cooling fan 33 is provided below the heating coil 5.
The cooling fan blowout port 51 is arranged so that the cooling air is blown out from the cooling fan blowout port 51 toward the heating coil cooling wind guide path 25.

The cooling fan 33 is a sirocco fan, but may be an axial fan. The sectional area d1 of the cooling fan outlet 51 is set to be larger than the sectional area d2 of the heating coil cooling air guide path 25.

Since the other components are the same as those in FIG. 12, the same reference numerals are used and the detailed description is omitted.

Therefore, in the seventh embodiment,
The cooling air blown out from the cooling fan outlet 51 is sent into the heating coil cooling air guide path 25. The cooling air sent into the heating coil cooling air guide passage 25 cools the upper surface of the heating coil 5 when flowing through the cooling air passage 11. At this time, the flow rate of the cooling air flowing through the cooling air passage 11 is restricted by the reduction of the passage opening ratio by the temperature sensor 55, and the cooling performance of the upper surface of the heating coil 5 is reduced. A part of the cooling air flows along the lower surface of the heating coil 5, and the lower surface of the heating coil 5 is cooled.

This makes it possible to compensate for a reduction in the cooling performance of the upper surface of the heating coil 5 due to a reduction in the passage opening ratio.

The cooling fan outlet 5 having a large sectional area
1 may be configured as an air duct 57 extending from the cooling fan 33 as shown in FIG. As a result, the degree of design freedom in which the attitude of the cooling fan 33 can be freely changed increases, and the overall height H can be reduced without lowering the cooling performance.

FIGS. 16 and 17 show an eighth embodiment in which the region of the heating coil 5 where the temperature is highest can be intensively cooled.
1 is an embodiment of the present invention.

That is, a cooling air outlet 59 is provided below the heating coil 5 to blow the cooling air from below to a middle portion of the bottom coil radius where the heat generation amount of the heating coil 5 is highest.

The cooling air outlets 59 are arranged in an arc at predetermined intervals on the upper surface of the air guide plate 60 surrounding the cooling fan 33 as shown in FIG.

The other components are the same as those in FIG. 11, and the same reference numerals are used, and detailed description is omitted.

Therefore, according to the eighth embodiment, the operation of the cooling fan 33 allows the cooling air to flow through the cooling air outlet 5.
It is blown out vigorously from 9. At this time, since the cooling air having a high flow velocity intensively hits the region of the heating coil 5 where the calorific value is the highest, efficient cooling is performed. Providing a hole a in the center of the air guide plate 60 to improve the flow to the cooling air passage 11 is also one of effective cooling means.

In this case, as shown in FIG. 18 and FIG. 19, the cooling air outlet 59 has a shape having a wide diameter that is blown out over the region of the bottom coil radius middle portion Y including the center portion of the heating coil 5. You may.

FIGS. 20 and 21 show a ninth embodiment in which a heating coil for induction heating a pot or the like made of a material having low resistance and low magnetic permeability can be efficiently cooled. It is.

That is, a first heating coil 61 for inductively heating a low-resistance and low-permeability material, for example, a pan made of aluminum, and a high-resistance and high-permeability material For example, a second heating coil 63 for induction heating a pot made of iron or the like is provided in parallel.

A cooling air passage 65 having the same flow passage gap is provided between the first heating coil 61 and the top plate.
The cooling air passage 65 is in communication with the heating coil cooling air guiding passage 67.

Below the first heating coil 61, a heating coil cooling device 69 for sending cooling air toward the first heating coil 61 and related equipment (not shown) are arranged.

The second heating coil 63 and the top plate 1
A cooling air passage 71 in which the flow path gap is gradually reduced from the windward side fa to the leeward side fb is provided between the two.

A heating chamber 75 such as a roaster having a heater 73 therein is disposed below the second heating coil 63. By opening and closing a front door 77, heating cooking can be taken in and out.

The cooling air that has cooled the first heating coil 61 flows through the second heating coil 63 so that the heating coil 63 is cooled.

In FIG. 21, reference numeral 79 denotes a coil supporting leg supporting the heating coil 61, and in FIG. 21, reference numeral 81 denotes an operation unit provided on the front surface of the cooking device main body 83.

Therefore, according to the ninth embodiment, the first heating coil 61 for inductively heating an aluminum pot or the like made of a material having low resistance and low magnetic permeability generates a large amount of heat. However, it is directly cooled by the cooling air from the heating coil cooling device 69 arranged at the lower part.

After cooling the first heating coil 61, the cooling air flows toward the second heating coil as shown in FIG. 21 to cool the second heating coil 63.

It is also possible to provide another cooling fan for the second heating coil.

[0084]

As described above, according to the induction heating cooker of the present invention, the heating coil can be reliably secured without lowering the efficiency of the heating coil, and the heating coil can be reliably cooled. .

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a main part of an induction heating cooker according to the present invention.

FIG. 2 is a schematic cross-sectional view similar to FIG. 1 showing another embodiment including a cooling air passage in which a passage cross-sectional area is sequentially larger on the leeward side than on the leeward side.

FIG. 3 is a schematic cross-sectional view similar to FIG. 1 showing another embodiment including a cooling air passage in which a passage cross-sectional area increases gradually on the leeward side with respect to the leeward side.

FIG. 4 is a schematic cross-sectional view similar to FIG. 1 showing another embodiment including a cooling air passage in which a passage cross-sectional area increases gradually on the leeward side with respect to the leeward side.

FIG. 5 is a schematic cross-sectional view similar to FIG. 1 showing another embodiment including a cooling air passage in which a passage cross-sectional area is gradually increased on the leeward side with respect to the leeward side.

FIG. 6 is a schematic sectional view similar to FIG. 1, showing a second embodiment in which a cooling air passage is provided with a deflecting plate.

FIG. 7 is a schematic cross-sectional view similar to FIG. 1 showing a third embodiment in which a chamfer is applied to one opening edge of a heating coil cooling air guide path to ensure a smooth flow of cooling air.

FIG. 8 is an enlarged cross-sectional view of a main part obtained by chamfering in FIG. 7;

FIG. 9 is a schematic cross-sectional view similar to FIG. 7, in which a tapered surface is provided on the upper surface of the heating coil.

FIG. 10 shows a fourth configuration in which the cooling air passing through the cooling air passage is prevented from interfering with the cooling air flowing through the lower surface of the heating coil.
The outline sectional view of the induction heating cooker which shows an embodiment.

FIG. 11 is a schematic cross-sectional view of an induction heating cooker showing a fifth embodiment in which cooling air can be sent to a heating coil without being affected by heat.

FIG. 12 shows that the cooling air blown out from the cooling fan outlet is
FIG. 13 is a schematic sectional view of an induction heating cooker according to a sixth embodiment in which a heating coil can be reliably sent into a cooling air guide path.

FIG. 13 shows a cooling fan blow-out port in a duct configuration.
FIG.

FIG. 14 is a schematic sectional view of an induction heating cooker according to a seventh embodiment in which the lower surface of a heating coil can be simultaneously cooled by cooling air from a cooling fan outlet.

FIG. 15 is a schematic cross-sectional view similar to FIG. 14 in which a cooling fan outlet is configured as a duct.

FIG. 16 is a schematic cross-sectional view of an induction heating cooker according to an eighth embodiment in which cooling air is applied to a high-temperature portion of a heating coil in a concentrated manner.

FIG. 17 is a schematic plan view showing a cooling air outlet that blows cooling air in a concentrated manner.

FIG. 18 is a schematic cross-sectional view similar to FIG. 16 with another cooling air outlet.

FIG. 19 is a schematic plan view showing the cooling air outlet of FIG. 18;

FIG. 20 is a perspective view of the entire induction heating cooker provided with heating coils in parallel.

FIG. 21 is a schematic sectional view of FIG. 20;

[Explanation of symbols]

 1 top plate 5 heating coil 11 cooling air passage

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruya Tanaka 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Living Space Systems Research Institute (72) Inventor Koji Murakami Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa 8 Inside Toshiba Living Space System Engineering Laboratory

Claims (10)

[Claims] 1. A cooling air passage having a heating coil for generating a high-frequency magnetic field provided below a top plate and having a passage gap gradually decreasing from the windward side to the leeward side between the upper surface of the heating coil and the top plate. An induction heating cooker comprising: 2. A heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. An induction heating cooker, characterized in that a cooling air intake gap is made larger than a gap of the cooling air passage by providing a deflection plate which is inclined upward toward the cooling air passage. 3. The induction heating cooker according to claim 2, wherein a heat generating component is attached to the deflection plate through which the cooling air flows. 4. A heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path through which cooling air flows from below the coil toward the cooling air passage, and at least one of the opening edges of the heating coil cooling air guide path is chamfered; Cooking cooker. 5. A heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. While providing a heating coil cooling air guide path through which cooling air flows from below to the cooling air passage, cooling air flowing along the lower surface of the heating coil interferes with cooling air passing through the cooling air passage. An induction heating cooker comprising a partition member for preventing the induction heating. 6. A heating coil for generating a high-frequency magnetic field is provided below the top plate, a cooling air passage through which cooling air flows is provided between an upper surface of the heating coil and the top plate, and a cooling fan is provided in the heating coil. A cooling air flow guide path through which cooling air flows from below the heating coil toward the cooling air passage, while cutting off heat from the heat-generating components below the heating coil, and allowing the cooling air to flow through the heating coil cooling air flow. Provide a guide wall to guide the taxiway, and on the guide wall,
An induction heating cooker characterized by having an intake port for taking in low-temperature air. 7. A heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between the upper surface of the heating coil and the top plate. A heating coil cooling air guide path in which cooling air blown from a fan outlet flows from below the heating coil toward the cooling air passage is provided, and the shape of the cooling fan outlet and the shape of the heating coil cooling air guide path are adjusted. An induction heating cooker having a substantially similar shape and a cross-sectional area equal to or smaller than a cross-sectional area of a heating coil cooling air guide path. 8. A heating coil for generating a high-frequency magnetic field is provided below the top plate, and a cooling air passage through which cooling air flows is provided between an upper surface of the heating coil and the top plate. A heating coil cooling air guide path is provided in which cooling air blown from the fan outlet flows from below the heating coil toward the cooling air passage, and a cross-sectional area of the cooling fan outlet is determined by cutting the heating coil cooling air guide path. An induction heating cooker characterized by being larger than the area. 9. A heating device having a top plate and a heating coil for generating a high-frequency magnetic field below the top plate. An induction heating cooker having a cooling air outlet for blowing cooling air. 10. A first heating coil for generating a high-frequency magnetic field and inductively heating a low-resistance, low-permeability pot, and a high-resistance, high-permeability pot below a top plate. A second heating coil for induction heating is provided, and a heating coil cooling device for directly cooling the first heating coil is arranged at least below the first heating coil.