JP6351797B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker.

  A built-in type induction heating cooker and a table type induction heating cooker accommodated in a kitchen cabinet are known.

  For example, the built-in induction heating cooker is dropped from the drop hole (top plate opening) formed in the kitchen top plate of the kitchen cabinet into the storage unit formed in the kitchen cabinet, Can be assembled in a kitchen cabinet. In the system kitchen that accommodates such a built-in type induction heating cooker, the dimensions of the top plate opening formed in the kitchen top plate are determined in advance in consideration of the ease of mounting the induction heating cooker. In Japan, the width dimension (inner width) of the top plate opening formed on the kitchen top plate is about 560 mm.

  As described above, since the width dimension of the top plate opening formed on the kitchen top plate is determined, the size of the main body housing of the induction heating cooker inserted into the storage unit from the top plate opening is also determined. . Thereby, in the induction heating cooker (IH cooking heater), the size and layout of the heating coil accommodated in the main body casing are also restricted. For this reason, it is difficult to mount a large number of heating coils or a heating coil having a large diameter. Moreover, since it was difficult to widen the space | interval between heating coils, when cooking using several pans on the top plate, the pans contacted and the subject that a user's usability was impaired occurred.

  With such a background, conventionally, in a built-in induction heating cooker and a table type induction heating cooker housed in a kitchen cabinet, the size restriction of the induction heating coil is reduced, and as much cooking as possible is performed. Attempts have been made to solve the problem of securing space on the top plate.

  For example, as a conventional induction heating cooker, “the outer shell forms a housing portion that houses the inverter device, and is inserted into an opening provided in a top plate of a cabinet of a kitchen device; A flange extending from the top to the outer peripheral side and placed on the top plate around the opening, and a part of the heating coil is accommodated between the flange and the plate The heating coil accommodation space to be formed is formed, and a part of the heating coil is disposed in the heating coil accommodation space ”(see, for example, Patent Document 1).

  Further, conventionally, induction heating cookers are required to make the heating coil thin and to mount the heating coil in a space-saving manner. In realizing the thinning and space-saving mounting of the heating coil, it has been desired to realize the cooling of self-heating of the heating coil in a space-saving manner, particularly in a thin configuration.

  With such a background, in the induction heating cooker described in Patent Document 1, “the air blown from the opening 49b provided in the approximate center of the coil unit 2 radiates downward along the lower surface of the heat radiating plate 22. And the air flowing through the gap between the heating coil 20 and the heat radiating plate 22 toward the outer peripheral side of the heating coil 20. “The air passing through the air passage 25 directly takes heat from the lower surface of the heating coil 20. At the same time, it is proposed that the heat can be exchanged with the ferrite 24 that diffuses the heat of the heating coil 20 and the heat radiating plate 22 that is transferred through the ferrite 24 (see, for example, Patent Document 1).

  Further, as another conventional induction heating cooker, “a portion of the metal plate 13 </ b> B located in the accommodating portion 8 is bent away from the heating coil 102 and its surface is exposed. The metal plate 13B is formed in an L-shaped cross section so as to follow the flange 7 of the outer shell 15 and the vertical wall of the housing portion 8. Thereby, the cooling air of the above-described blower (not shown) is made of metal. A technique that can be effectively applied to the plate 13B and improves the cooling efficiency of the heating coil 102 has been proposed (see, for example, Patent Document 2).

Japanese Patent No. 5313334 (page 18, FIG. 13) Japanese Patent Laying-Open No. 2005-302406 (page 8, FIGS. 5 and 6)

  Regarding the problem of obtaining an induction heating cooker that reduces the restriction on the size of the heating coil and secures as many cooking spaces as possible on the top plate part, in addition to those disclosed in Patent Document 1 above, An induction heating cooker that solves the same problem has been desired.

  Moreover, from the viewpoint of cooling the self-heating of the heating coil in a space-saving manner, the induction heating cookers described in Patent Documents 1 and 2 have the following problems.

  In the induction heating cooker described in Patent Document 1, the heat generated in the thinly mounted heating coil is transferred to the metal plate and transferred to the receiving portion where the cooling air reaches, and then exchanged heat with the cooling air. Cooled. For this reason, depending on the cross-sectional area of the metal plate, there is a possibility that it becomes a bottleneck of heat transport, and the cooling efficiency is lower than when the heating coil is directly cooled by cooling air by transferring heat through the metal plate. there's a possibility that. Therefore, the heating coil is not sufficiently cooled, and the heating coil may be damaged due to a temperature rise, or the temperature of the kitchen top plate may be increased and the kitchen cabinet may be deteriorated due to heat.

  In addition, in the induction heating cooker described in Patent Document 2, a large number of cooling air flows radially below the heat sink along the lower surface of the heat sink with a relatively small pressure loss, and the heating coil, the heat sink, The flow of the cooling air passing through the space is slight. For this reason, the cooling of the heating coil is mainly indirect cooling in which the heat of the heating coil exchanges heat with the cooling air through the ferrite and the heat radiating plate. Therefore, a sufficient cooling effect cannot be obtained, and there is a possibility that the heating coil rises in temperature and is damaged.

The present invention has been made against the background of the above problems, and obtains an induction heating cooker that reduces the restriction on the size of the heating coil and secures as many cooking spaces as possible on the top plate. The purpose is that.
Another object of the present invention is to provide an induction heating cooker that can cool a heating coil in a space-saving manner.

  An induction heating cooker according to the present invention includes a main body housing, a top plate portion provided on the main body housing, and a heating coil for induction heating an object to be heated placed on the top plate portion. A coil support that is formed with an air inlet and supports the heating coil from below; and a partition member that is disposed between the coil support and the heating coil supported by the coil support. The coil support has a protruding portion for supporting a part of the heating coil, and the partition member is provided on a lower side of the heating coil mounted on the protruding portion of the coil support. A side wall having substantially the same curvature as the outer periphery of the heating coil disposed above itself, and a gap serving as a cooling duct is formed between the upper surface of the partition member and the lower surface of the heating coil. It is what.

  According to the present invention, the heating coil can be cooled in a space-saving manner.

It is the disassembled perspective view which moved the vent hole cover 7 in the state which installed the induction heating cooking appliance 1 which concerns on Embodiment 1, 2 in the kitchen cabinet 200. FIG. It is a perspective view which shows an example of the kitchen cabinet. FIG. 3 is a perspective view in which the top plate 4, the top plate frame 3, and the vent cover 7 are removed in a state where the main body housing 2 of the induction heating cooker 1 according to Embodiment 1 is installed in the kitchen cabinet 200. It is the perspective view which removed the incidental components of the top plate 4, the top plate frame 3, the vent hole cover 7, and the coil support body 17 of the induction heating cooking appliance 1 which concerns on Embodiment 1. FIG. Disassembly of the state where the top plate 4, the top plate frame 3, the vent cover 7 and the accessory parts of the coil support 17 of the induction heating cooker 1 according to the first embodiment are removed and the ventilation body 70 is moved upward. It is a perspective view. 3 is a top view of a ventilation body 70 according to Embodiment 1. FIG. 4 is a perspective view of a substrate case unit 24 according to Embodiments 1 and 2. FIG. 3 is a side cross-sectional view of a substrate case unit 24 according to Embodiments 1 and 2. It is the disassembled perspective view which looked at the components supported by the right side coil support body 17c which concerns on Embodiment 1, and the right side coil support body 17c from upper direction. It is the disassembled perspective view which looked at the components supported by the right side coil support body 17c and the right side coil support body 17c which concern on Embodiment 1 from the downward direction. It is the perspective view of the right side coil support body 17c which concerns on Embodiment 1, and its incidental parts, (a) is the perspective view seen from upper direction, (b) is the perspective view seen from the downward direction. It is a fragmentary sectional view of the coil support body 17c part of the right side of the induction heating cooking appliance 1 and the kitchen top plate 201 which concern on Embodiment 1. FIG. It is the disassembled perspective view which looked at the left coil support body 17a which concerns on Embodiment 1, and its incidental parts from the upper direction. It is the disassembled perspective view which looked at the accessory components of the left side coil support body 17a which concerns on Embodiment 1, the partition member 18a, and the partition member 18a from the downward direction. It is a fragmentary sectional view of the left coil support body 17a part of induction heating cooking appliance 1 and kitchen top plate 201 concerning Embodiment 1. FIG. It is a top view of the state which removed the top plate frame 3 and incidental components of the induction heating cooking appliance 1 which concerns on Embodiment 1. FIG. It is the perspective view which removed the top plate 4, the top plate frame 3, and the vent hole cover 7 in the state which installed the induction heating cooking appliance 1 which concerns on Embodiment 2 in the kitchen cabinet 200. FIG. It is the perspective view which removed the top plate 4, the top plate frame 3, the vent hole cover 7, the coil support body 17, and its incidental parts of the induction heating cooking appliance 1 which concerns on Embodiment 2. FIG. The exploded perspective view which removed the top plate 4, the top plate frame 3, the vent cover 7, and the coil support body 17, and its incidental parts of the induction heating cooking appliance 1 which concerns on Embodiment 2, and moved the ventilation body 70 upwards. It is. 6 is a top view of a ventilation body 70 according to Embodiment 2. FIG. It is the disassembled perspective view which looked at the components supported by the right side coil support body 17c which concerns on Embodiment 2, and the right side coil support body 17c from upper direction. It is the disassembled perspective view which looked at the components supported by the right side coil support body 17c which concerns on Embodiment 2, and the right side coil support body 17c from the downward direction. It is a fragmentary sectional view of the coil support 17c portion on the right side of induction heating cooker 1 and kitchen top plate 201 according to Embodiment 2. It is the disassembled perspective view which looked at the components supported by the left coil support body 17a which concerns on Embodiment 2, and the left coil support body 17a from upper direction. It is the disassembled perspective view which looked at the accessory component of the left coil support body 17a which concerns on Embodiment 2, and the partition member 18a, and the partition member 18a from the downward direction. It is a bottom view of the left coil support body 17a which concerns on Embodiment 2, and its incidental components. FIG. 10 is a bottom cross-sectional view of the left magnetic coil support body 17a according to the second embodiment and the high-permeability magnetic body 39 portion of its accessory parts. 6 is a partial cross-sectional view of a left coil support body 17a portion according to Embodiment 2. FIG. It is an upper surface sectional view in the top plate frame 3 part of the state where the induction heating cooking appliance 1 concerning Embodiment 2 was installed in kitchen cabinet 200.

  Hereinafter, an embodiment of an induction heating cooker according to the present invention will be described based on the drawings. In addition, this invention is not limited by the form of drawing shown below. Further, in the following description, terms for indicating directions (for example, “up”, “down”, “right”, “left”, “front”, “back”, etc.) are used as appropriate for easy understanding. This is for explanation and these terms do not limit the present invention. Unless otherwise specified, terms indicating these directions mean directions when the induction heating cooker is viewed from the front side (front side). Moreover, in each figure, what attached | subjected the same code | symbol is the same or it corresponds, and this is common in the whole text of a specification.

Embodiment 1 FIG.
FIG. 1 is an exploded perspective view in which the vent cover 7 is moved upward in a state where the induction heating cooker 1 according to Embodiment 1 is installed in the kitchen cabinet 200. The induction heating cooker 1 of Embodiment 1 is a built-in type in which the main body housing 2 is used by being incorporated in the kitchen cabinet 200. On the main body housing 2, a top plate portion having a top plate 4 and a top plate frame 3 attached to the outer periphery of the top plate 4 as main components is provided. As shown in FIG. 1, in a state where the main body housing 2 is incorporated in the kitchen cabinet 200, the top plate portion (the top plate 4, the top plate frame 3 is placed on the kitchen top plate 201 that forms the top surface of the kitchen cabinet 200. ) And the main body housing 2 is housed inside the kitchen cabinet 200. A cooking chamber 14 for heating the grill is formed in the main body housing 2, and the cooking chamber 14 provided on the front surface of the main body housing 2 is formed from the front opening 204 formed on the front surface of the kitchen cabinet 200. The door and the operation unit 6 are exposed.

  The top plate frame 3 is a square frame member having a rectangular opening at the center, and the top plate 4 is fitted in the opening of the top plate frame 3. The top plate frame 3 is made of, for example, a material obtained by mixing metal such as stainless steel, aluminum, enameled steel plate, stone such as artificial marble or artificial marble, cement, resin, and the like. The top plate 4 is made of, for example, a nonmetallic material such as heat resistant glass or ceramic. The top plate 4 and the top plate frame 3 are bonded with an adhesive such as silicon, for example. Alternatively, the top plate 4 may be held on the top plate frame 3 by a holding structure such as a groove or a claw provided on the top plate frame 3.

  In the top plate 4, three heating ports 5 a, 5 b, and 5 c on which a heated object (not shown) such as a pan or a frying pan is placed are left along the width direction of the main body housing 2. They are arranged in order. In the width direction of the main body housing 2, the heating port 5 a is provided on the left side, the heating port 5 b is provided in the middle, and the heating port 5 c is provided on the right side. The term “middle” with respect to the heating port 5b means between the left heating port 5a and the right heating port 5c, and the distance between the heating port 5a and the heating port 5c is not necessarily equal. There is no need. In the following description, when the matters common to the heating port 5a, the heating port 5b, and the heating port 5c are described, they may be collectively referred to as the heating port 5. On the front surface or the back surface of the top plate 4, a display serving as a mark when placing an object to be heated on each heating port 5 is provided.

  The front ends of the heating ports 5b arranged in the middle of the left and right are arranged behind the front ends of the heating ports 5a and 5c arranged on the left and right. The heating port 5a and the heating port 5c are arranged close to the left and right ends of the top plate 4, respectively. For this reason, in the area from the front of the middle heating port 5b to the front of the left and right heating ports 5a and 5c, a sufficient space is secured for the user to perform cooking operations other than cooking such as serving. It has the effect of improving the workability of cooking.

  A display unit 10 is provided in front of each heating port 5. The display unit 10 displays the heating power state of each heating port 5, information for performing cooking work, the contents of operation menus such as automatic cooking, the progress of cooking, and the like. The display unit 10 is configured by an arbitrary device that can visually notify information, such as a liquid crystal screen or an LED.

  An operation unit 6 is provided on the front surface of the main body housing 2 and in front of the display unit 10. The operation unit 6 is an input device that receives an operation input related to heating cooking in each heating port 5 and the cooking chamber 14. The user can use the operation unit 6 to adjust the heating power, select a cooking menu, and perform instructions. The operation unit 6 includes an arbitrary device such as a touch panel, hardware buttons, and a dial.

  A housing intake port 8 is provided on the right back side of the top plate frame 3, and a housing exhaust port 9 is provided on the left back side of the top plate frame 3. The housing intake port 8 is an opening that sucks cooling air into the main body housing 2. The case exhaust port 9 is an opening through which exhaust from the inside of the main body case 2 passes. In the first embodiment, the housing inlet 8 is provided on the right rear side of the top plate frame 3, but air used for cooling is sucked from outside the top plate frame 3 and the main body housing 2. The position of the housing inlet 8 is not limited to that shown in FIG. For example, the housing inlet 8 may be provided at any one or more of the back surface, bottom surface, and front surface of the main body housing 2.

  A vent cover 7 is disposed so as to cover the housing intake port 8 and the housing exhaust port 9. The vent cover 7 is formed with an opening through which air can flow, and the flow of intake and exhaust can pass smoothly. By providing the vent cover 7, entry of foreign matter into the housing intake port 8 and the housing exhaust port 9 provided below the vent cover 7 is suppressed.

A drawer-type door that opens and closes the front opening of the cooking chamber 14 is disposed on the left side of the front surface of the main body housing 2. Ingredients and the like to be cooked in the cooking chamber 14 are put in and out by opening and closing the door of the cooking chamber 14.
In addition, arrangement | positioning and the number of the cooking chamber 14, the operation part 6, and the display part 10 are examples, and are not limited to the thing of illustration.

  FIG. 2 is a perspective view showing an example of the kitchen cabinet 200. With reference to FIG. 2, an example of the kitchen cabinet 200 in which the induction heating cooking appliance 1 of this Embodiment can be integrated is demonstrated. The kitchen cabinet 200 is formed with a storage portion 203 that is a space in which the main body housing 2 of the induction heating cooker 1 is stored. The kitchen top plate 201 is formed with an opening leading to the storage unit 203, and this opening is referred to as a top plate opening 202. Further, an opening leading to the storage unit 203 is formed on the front surface of the kitchen cabinet 200, and this opening is referred to as a front opening 204. The main body housing 2 of the induction heating cooker 1 is accommodated in the storage unit 203 which is a space from the top plate opening 202 to the front surface opening 204, and the top plate frame 3 and the top are placed on the kitchen top plate 201. The plate 4 is placed.

  A drawer having a storage space for cooking utensils or the like is provided below the storage unit 203. There is also a kitchen cabinet 200 provided with a storage space for a heating cooker such as a microwave oven instead of such a storage space, and the use below the storage unit 203 is not limited.

  FIG. 3 is a perspective view in which the top plate 4, the top plate frame 3, and the vent cover 7 are removed in a state where the main body housing 2 of the induction heating cooker 1 according to Embodiment 1 is installed in the kitchen cabinet 200. . An air inlet 25 of the substrate case unit 24 (see FIG. 5) is provided at a position corresponding to the lower side of the housing air inlet 8 shown in FIG. 1, and this air inlet 25 is connected to the housing air inlet 8. Connected. Further, an exhaust air passage 23 is provided at a position corresponding to the lower side of the housing exhaust port 9 shown in FIG. 1, and this exhaust air passage 23 is connected to the housing exhaust port 9.

  Below the heating port 5a, heating port 5b, and heating port 5c of the top plate 4 shown in FIG. 1, a heating coil 11, a heating coil 12, and a heating coil 13 are provided as heating means, respectively. The heating coils 11, 12, and 13 are supported from below by coil supports 17a, 17b, and 17c, respectively. The coil supports 17a, 17b, and 17c are supported by the main body housing 2 via an elastic body 15 provided on the lower surface thereof.

  Flat flange portions 28 extending toward the outside of the main body housing 2 are formed on the left and right upper edge portions of the main body housing 2 at positions avoiding the coil supports 17a and 17c. The flange portion 28 is placed on the upper surface of the kitchen top plate 201 in a state where the main body housing 2 is stored in the storage portion 203, and the top plate 4 or the top plate frame 3 is disposed on the flange portion 28. The The top plate 4 or the top plate frame 3 and the flange portion 28 are arranged close to or in contact with each other, and their surfaces face each other to enhance the airtightness in the main body housing 2. An airtight member made of, for example, a synthetic resin or synthetic rubber may be sandwiched between the top plate 4 or the top plate frame 3 and the flange portion 28. By doing so, the airtightness in the main body housing 2 can be further increased. Can increase the sex.

  Below the left heating port 5a (see FIG. 1), there are five sub-heating coils 11a, 11b, 11c, 11d, and 11e arranged at different positions (sometimes collectively referred to as the heating coil 11). Is provided. In the following description, the “sub heating coil” is simply referred to as “heating coil”. The heating coil 11e is configured by winding a winding in a double ring shape, and heating coils 11a to 11d configured by winding the winding in a flat elliptical shape are arranged on the outer peripheral side of the heating coil 11e. Has been.

  The five heating coils 11 are independently driven, and one to five of the five heating coils 11 are appropriately combined and driven for cooking according to the size and arrangement of the cooking container that is the object to be heated. Is done. Therefore, even when the size, shape, and arrangement of the cooking container are different, such as a small pan, a large frying pan, a vertical fried egg frying pan, and a horizontal oval pan, the appropriate range of the cooking container is heated. Since the heating coil 11 in the range where the object to be heated is not placed is not heated, wasteful power consumption can be suppressed and the environmental load can be reduced. Since the entire range of the object to be heated placed on the heating coil 11 can be heated, more uniform heating can be performed and there is an effect of obtaining a good cooking effect and finish.

  These five heating coils 11 are supported from below by one coil support 17a. The coil support 17a is formed in a generally disc shape in plan view, and is made of, for example, a nonmagnetic metal. A part of the left side of the coil support body 17 a is disposed so as to protrude outward from the left side surface of the main body housing 2. Here, a portion of the coil support 17a that is arranged to protrude outward from the left side surface of the main body housing 2 is referred to as a protruding portion 171a. When viewed from above, the protrusion 171a of the coil support 17a does not overlap the main body housing 2 but overlaps the kitchen top plate 201. When viewed in the height direction, the protruding portion 171a of the coil support 17a is disposed between the kitchen top plate 201 and the top plate 4 (see FIG. 1). A portion of the coil support body 17 a excluding the protruding portion 171 a is disposed inside the main body housing 2. The leftmost heating coil 11a is placed on the protrusion 171a of the coil support 17a, and the other heating coils 11b to 11e are placed on the portion of the coil support 17a excluding the protrusion 171a.

  A ring member 29 attached along the upper end portion is provided at the upper end portion of the coil support 17a so as to surround the upper end portion. The ring member 29 is an annular flat plate member made of a nonmagnetic metal such as aluminum or copper. The ring member 29 is arranged so that the flat plate surface faces the lower surface of the top plate 4. The ring member 29 absorbs a high frequency magnetic field generated from the heating coil 11 and reduces an unnecessary leakage magnetic field. In addition, in a state where the top plate frame 3 and the top plate 4 are attached to the main body housing 2, the upper surface of the ring member 29 and the lower surface of the top plate 4 are disposed close to each other. Since the plane portion of the upper surface of the ring member 29 faces the lower surface of the top plate 4, the airtightness of the gap between the coil support 17a and the top plate 4 can be improved, and unnecessary cooling air leakage can be suppressed. . For example, when a large amount of air having a temperature higher than room temperature after cooling the heating coil 11 is blown out from the gap between the coil support 17a and the top plate 4, a part of the top plate opening 202 and the body housing 2 may flow into the storage part 203 of the kitchen cabinet 200 through the gap between the two and raise the temperature in the kitchen cabinet 200, thereby causing deterioration of ingredients stored in the kitchen cabinet 200. According to the embodiment, since unnecessary leakage of cooling air is suppressed as described above, such an event can be suppressed.

  In the present embodiment, the airtightness between the ring member 29 and the top plate 4 is increased by bringing them close to each other as described above. In addition to this configuration, a heat-resistant airtight member such as a sponge made of a fluorine material may be attached to the upper surface of the ring member 29. By doing so, the airtightness can be further improved.

  Positioning members 16 are provided at at least three positions on the upper surface of the ring member 29. The positioning member 16 is a contact member that comes into contact with the lower surface of the top plate 4 when the top plate 4 is attached to the main body housing 2. By providing such a positioning member 16, the positional relationship in the height direction between the heating coil 11 and the top plate 4 is maintained in a predetermined state, and as a result, is placed on the heating coil 11 and the top plate 4. The distance to the object to be heated is kept at a predetermined distance. Thereby, the heating state of the to-be-heated object which can be fluctuate | varied with the distance with the heating coil 11 can be stabilized.

  On the lower surface of the ring member 29, a supported portion 30 is provided at a position facing the position where the positioning member 16 is provided, that is, a position overlapping the positioning member 16 when viewed from above. In the first embodiment, the supported portion 30 has a tongue-like shape protruding from the outer peripheral portion of the ring member 29. The lower surface of the supported portion 30 is supported from below by the elastic body 15 and urged upward. The positioning member 16 is pressed against the lower surface of the top plate 4 by the coil support 17a being biased upward via the supported portion 30 by the elastic force of the elastic body 15. In the first embodiment, a coil spring is shown as an example of the elastic body 15. Since the supported portion 30 is provided at a position facing the positioning member 16, the positioning member 16 can be pressed against the lower surface of the top plate 4 without generating an unnecessary moment. Therefore, even when the ring member 29 and the supported portion 30 are configured using a metal material having a relatively low strength such as aluminum or copper, the ring member 29 due to the force when the positioning member 16 is pressed against the top plate 4. And the deformation | transformation of the to-be-supported part 30 can be suppressed.

  The coil support 17a supports a plurality of parts including the heating coil 11 and a high permeability magnetic body 38 to be described later. The center of gravity of the coil support 17a including the parts supported by the coil support 17a is a top view. Is located inside the outer shape line connecting the supported parts 30. In the example of the present embodiment, three supported portions 30 are provided, and a coil in a state in which a component including the heating coil 11 is supported inside the outline connecting these three supported portions 30. The center of gravity of the support 17a is located. For this reason, when the coil support body 17a is placed on the elastic body 15 in the state where the top plate 4 is not attached in the process of assembling the induction heating cooker 1, the coil support body 17a is inclined due to gravity and the coil is supported. It is possible to prevent the support 17a from falling. In particular, in the first embodiment, the coil support 17a is arranged so as to protrude from the side wall of the main body housing 2, and therefore, when the coil support 17a falls from the elastic body 15, it is received by the main body housing 2. There is a risk of falling outside the main body housing 2 without being carried out. When the coil support body 17a falls on the floor, it is assumed that the damage to the coil support body 17a is increased. If this happens, the coil support body 17a cannot be used, and the manufacturing loss increases. However, according to the first embodiment, as described above, since the coil support body 17a is difficult to drop, loss due to the drop of the coil support body 17a can be suppressed. Moreover, by supporting the coil support body 17a by the plane part in the main body housing | casing 2, the assembly operation | work of the induction heating cooking appliance 1 is made easy, and the malfunction of an assembly is reduced, and the assembly cost is reduced.

  The maximum heating power of the leftmost heating coil 11a supported by the protrusion 171a of the coil support 17a is controlled to be lower than that of the heating coil 11e arranged at the center. This reduces the self-heating of the heating coil 11a placed on the protruding portion 171a, that is, the heating coil 11a placed on the kitchen top plate 201, and reduces the cooling load on the heating coil 11a. Yes.

  The leftmost heating coil 11a is provided with a heating coil temperature detection device (not shown) that detects the temperature of the heating coil 11a by detecting the temperature of the heating coil 11a itself or the temperature around it. . An arbitrary temperature sensor such as a thermistor or a thermopile can be used as the heating coil temperature detection device. When the temperature of the heating coil 11a becomes equal to or higher than the threshold value, the heating by the heating coil 11a is stopped or the thermal power is reduced. Here, when the heating by the heating coil 11a is stopped or the thermal power is reduced, any one or more of the thermal heating coils 11b to 11e is increased so that the total thermal power of the heating port 5a is maintained.

  A double annular heating coil 13 wound concentrically is provided below the right heating port 5c (see FIG. 1). The heating coil 13 is supported from below by a coil support 17c. The coil support 17c is formed in a generally disc shape in plan view, and is made of, for example, a nonmagnetic metal. A part on the right side of the coil support 17c is disposed so as to protrude outward from the right side surface of the main housing 2. Here, a portion of the coil support 17c that is disposed so as to protrude outward from the right side surface of the main housing 2 is referred to as a protrusion 171c. When viewed from above, the projecting portion 171c of the coil support 17c does not overlap the main body housing 2, but overlaps the kitchen top plate 201. When viewed in the height direction, the protruding portion 171c of the coil support 17c is disposed between the kitchen top plate 201 and the top plate 4 (see FIG. 1). A part of the right side of the heating coil 13 is placed on the protrusion 171c of the coil support 17c. Here, a portion of the heating coil 13 placed on the protruding portion 171c of the coil support 17c is referred to as a coil protruding portion 131.

  A ring member 29 similar to that provided on the coil support 17a is provided at the upper end of the coil support 17c. The configuration of the ring member 29 and the function and effect thereof are the same as those described with respect to the coil support body 17a. The configuration related to the positioning member 16, the supported portion 30, and the elastic body 15 is the same as that described with respect to the coil support body 17a.

  The coil protrusion 131 placed on the protrusion 171c of the coil support 17c has a heating coil that detects the temperature of the coil protrusion 131 by detecting the temperature of the coil protrusion 131 itself or its ambient temperature. Temperature detection means (not shown) is provided. An arbitrary temperature sensor such as a thermistor or a thermopile can be used as the heating coil temperature detection device. When the temperature of the coil protrusion part 131 becomes more than a threshold value, the heating by the heating coil 13 stops or a thermal power falls.

  An annular heating coil 12 is provided below the intermediate heating port 5b (see FIG. 1). The heating coil 12 is supported from below by a coil support 17b. The coil support 17b is formed in a substantially disk shape in plan view, and is made of, for example, a nonmagnetic metal.

  A magnetic shielding plate 59 is provided on the outer periphery of the side surface of the coil support 17b. The magnetic shield 59 is an annular member made of a flat plate made of a nonmagnetic metal such as aluminum or copper. In the first embodiment, the magnetic shield plate 59 is disposed such that the flat plate surface thereof faces the vertical direction, that is, the outer peripheral portion of the heating coil 12 is opposed. The magnetic shield plate 59 absorbs the high-frequency magnetic flux from the heating coil 12 in the side surface direction, and suppresses the leakage of the magnetic flux to the outside of the main body housing 2.

  Positioning members 16 are provided at three locations on the upper surface of the outer peripheral portion of the coil support 17b. Moreover, the position facing the positioning member 16 on the lower surface of the outer peripheral portion of the coil support 17b is supported from below by an elastic body 15 such as a coil spring. The coil support 17 b is biased upward by the elastic force of the elastic body 15, and the positioning member 16 of the coil support 17 b is pressed against the lower surface of the top plate 4 when the top plate 4 is attached. With these configurations, vertical positioning of the coil support 17b and the heating coil 12 supported by the coil support 17b and the top plate 4 is realized.

  A ventilation body 70 (main ventilation path forming member) is disposed below the coil support body 17a and the coil support body 17c. The ventilation body 70 forms an air path that guides cooling air sent from a blower to be described later to the coil supports 17a and 17c. The air path formed by the ventilation body 70 is collectively referred to as a main ventilation path 80.

  An exhaust air passage 23 that forms an air passage that communicates the inside of the main body housing 2 and the housing exhaust port 9 is provided inside the main body housing 2 and on the left rear side of the heating coil 12. The exhaust air passage 23 is an air passage through which the cooling air flowing through the main body housing 2 is discharged to the outside of the main body housing 2.

  The cooling air guided by the main ventilation path 80 formed by the ventilation body 70 cools components including the heating coils 11, 12, and 13, and then is discharged to the outside of the main body housing 2 through the exhaust air path 23. Is done. Details of the configuration relating to the cooling air flow path will be described later.

  FIG. 4 is a perspective view in which the top plate 4, the top plate frame 3, the vent cover 7, and the auxiliary components of the coil support 17 of the induction heating cooker 1 according to Embodiment 1 are removed. On the upper surface of the ventilating body 70, left connection ports 71a and 71b (which may be collectively referred to as the left connection port 71), which are openings connected to the left coil support body 17a, and the right coil support body 17c are connected. The right connection ports 72a and 72b (which may be collectively referred to as the right connection port 72) are formed. In the first embodiment, a plurality of left connection ports 71 and right connection ports 72 are provided. In the following description, when a common configuration is described, the left connection port 71 and the right connection port 72 are generically named.

  FIG. 5 shows that the top plate 4, the top plate frame 3, the vent cover 7 and the auxiliary components of the coil support 17 of the induction heating cooker 1 according to the first embodiment are removed and the ventilation body 70 is moved upward. FIG. FIG. 6 is a top view of the ventilation body 70 according to the first embodiment. 5 and 6, for the sake of explanation, a part of the inside of the ventilation body 70 is seen through. Moreover, in FIG. 6, the flow of the cooling air is conceptually indicated by an arrow for explanation.

  Of the plurality of left connection ports 71 formed on the upper surface of the ventilation body 70, the one that guides the cooling air to the protrusion 171a of the coil support 17a is referred to as a left connection port 71a. In addition, a member that guides the cooling air to a portion other than the projecting portion 171a of the coil support 17a is referred to as a left connection port 71b. A plurality (six in the first embodiment) of the left connection ports 71 a are provided, and these are arranged along the depth direction of the main body housing 2. The left connection port 71b is an opening having a shape generally along the outer shape of the coil support 17a placed above the left connection port 71b.

  Of the plurality of right connection ports 72 formed on the upper surface of the ventilation body 70, one that guides the cooling air to the projecting portion 171c of the coil support body 17c is referred to as a right connection port 72a. In addition, a member that guides the cooling air to a portion other than the protruding portion 171c of the coil support 17c is referred to as a right connection port 72b. A plurality (two in the first embodiment) of right connection ports 72a are provided, and these are arranged along the depth direction of the main body housing 2. The right connection port 72b is an opening having a shape substantially along the outer shape of the coil support 17c disposed above the right connection port 72b.

  The main ventilation path 80 formed in the ventilation body 70 is roughly divided into an auxiliary ventilation path (left auxiliary ventilation path 81) for guiding cooling air to the left coil support body 17a and cooling air to the right coil support body 17c. And an auxiliary ventilation path (right auxiliary ventilation path 82).

  The left auxiliary ventilation path 81 is divided into a left auxiliary ventilation path 81a connected to the plurality of left connection openings 71a and a left auxiliary ventilation path 81b connected to the left connection opening 71b.

  The right auxiliary ventilation path 82 is divided into a right auxiliary ventilation path 82a connected to the right connection port 72a and a right auxiliary ventilation path 82b connected to the right connection port 72b. Further, in the first embodiment, the right auxiliary ventilation path 82b is further divided into two air paths so as to be connected to the two right connection ports 72a.

  A substrate case unit 24 (which will be described later with reference to FIGS. 7 and 8) in which the blower 27 is housed is disposed on the right side of the main body housing 2 and below the ventilation body 70. The cooling air sent to the ventilation body 70 is sent out from the substrate case unit 24. A front exhaust port 26a and a rear exhaust port 26b are formed on the upper surface of the substrate case unit. The front exhaust port 26 a is connected to one end of the left auxiliary ventilation path 81, and the rear exhaust port 26 b is connected to one end of the right auxiliary ventilation path 82.

  An elastic body support portion 33 is provided on the upper surface of the ventilation body 70. The elastic body support portion 33 is a member that supports the lower portion of the elastic body 15 (see FIGS. 3 and 4) provided below the coil support body 17. In the state where the induction heating cooker 1 is assembled, the elastic body 15 is supported on the ventilation body 70, and the coil support body 17 is supported on the elastic body 15. In the first embodiment, a protruding elastic body support portion 33 fitted to the inner peripheral portion of the elastic body 15 formed of a coil spring is formed integrally with the ventilation body 70 on the upper surface of the ventilation body 70. . By forming the elastic body support portion 33 integrally with the ventilation body 70, the elastic body 15 and the coil support body 17 supported by the elastic body 15 can be accurately positioned. And the connection between the coil support 17a and the connection between the right connection port 72 and the coil support 17c are facilitated, and the assembly of the induction heating cooker 1 and the reliability of the product can be improved.

  Three terminal blocks 36 are provided in the right auxiliary ventilation path 82 formed in the ventilation body 70. Two of the three terminal blocks 36 are used to connect the strands of the heating coil 13. The remaining one of the three terminal blocks 36 is connected to the ground wire 32 of the coil support 17c, whereby the coil support 17c is grounded. All the terminal blocks 36 are arranged at positions exposed from one of the right connection ports 72 (the right connection port 72b in the first embodiment) when viewed from above. For this reason, when assembling the induction heating cooker 1, an operator can insert a hand or a tool from above the right connection port 72 to perform wiring to the terminal block 36.

  FIG. 7 is a perspective view of the substrate case unit 24 according to the first embodiment. As shown in FIG. 5, the substrate case unit 24 is disposed on the right side of the cooking chamber 14 in the main body housing 2. An electrical component 20 and a blower 27 are accommodated in the substrate case unit 24. The electrical component 20 includes an inverter circuit that is a driving unit that supplies high-frequency power to the heating coils 11, 12, and 13, a heat sink that increases the cooling efficiency of the inverter circuit, a microcomputer that is a control unit that controls the driving unit, a control circuit, and the like. A circuit board on which electronic components are mounted is included. In the present embodiment, an assembly of functional components that control the operation of each unit in the main body housing 2 is referred to as a control device.

  In the outer periphery of the substrate case unit 24, an intake port 25 is opened on the suction side of the blower 27, and two exhaust ports, a front exhaust port 26a and a rear exhaust port 26b, are provided on the upper surface on the delivery side of the blower device 27. It is open. The air inlet 25 is disposed below the housing air inlet 8 (see FIG. 1) and communicates with the housing air inlet 8. The inside of the substrate case unit 24 functions as an integral air path from the air inlet 25 to the front exhaust port 26a or the rear exhaust port 26b.

  More specifically, the air passage on the delivery side of the blower device 27 in the substrate case unit 24 is divided into two air passages, and these air passages are connected to the front exhaust port 26a and the rear exhaust port 26b, respectively. . Cooling air that mainly cools the left heating coil 11 flows through the air passage that leads to the front exhaust port 26a, and cooling air that mainly cools the right heating coil 13 flows through the air passage that leads to the rear exhaust port 26b. Therefore, the cross-sectional area of each air passage is determined in consideration of the cooling load of the heating coils 11 and 13 to be cooled.

  FIG. 8 is a side sectional view of the substrate case unit 24 according to the first embodiment. In FIG. 8, the flow of the cooling air is conceptually indicated by arrows. When the air blower 27 operates, external air flows into the substrate case unit 24 from the air inlet 25 connected to the housing air inlet 8. The air flowing into the substrate case unit 24 is sucked and sent out by the blower 27. The air passage on the delivery side of the blower 27 is divided into upper and lower portions by a diverter made of a flat plate member, the upper air passage is connected to the rear exhaust port 26b, and the lower air passage is the front exhaust. It is connected to the mouth 26a. A part of the cooling air sent from the blower 27 is blown out from the rear exhaust port 26b through the upper air passage (the left side in FIG. 8), and the other part passes through the lower air passage. After passing through and cooling the electrical components 20 such as the inverter circuit and the heat radiating fins mounted on the electronic circuit board, they are blown out from the front exhaust port 26a on the front side (the right side in FIG. 8).

  Note that the airflow configuration of the substrate case unit 24 is an example, and the shape and the path of the cooling air can be used as long as the airflow is provided from the front exhaust port 26a and the rear exhaust port 26b. However, the same actions and effects can be obtained. Further, the blower device 27 can adopt any configuration as long as it is a blower capable of delivering the sucked air from the front exhaust port 26a and the rear exhaust port 26b, and the arrangement thereof is also possible. It is not limited to the illustrated one.

  FIG. 9 is an exploded perspective view of the right coil support 17c and the components supported by the right coil support 17c according to the first embodiment, as viewed from above. A partition member 18c is provided below the heating coil 13 to partition the heating coil 13 and the coil support 17c in the vertical direction, and a plurality of high permeability magnetic bodies 38 are provided below the partition member 18c. It has been.

  The coil support 17c is formed of a non-magnetic metal plate having a high conductivity and a low permeability, such as aluminum or copper, and is generally dish-shaped. The coil support 17c also functions as a magnetic shielding means for preventing leakage of high-frequency magnetic flux from the heating coil 13, and prevents high-frequency heating other than the object to be heated (kitchen top plate 201 and the like) placed on the heating port 5c. The leakage of unnecessary magnetic flux to the outside of the induction heating cooker 1 is suppressed. In addition, since the coil support 17c has high conductivity, it promotes heat transfer and heat diffusion from the kitchen top plate 201 side where the temperature becomes high to the main body housing 2 side, and suppresses a local temperature rise, There is an effect as a heat sink that increases the heat radiation area and improves the contact with the cooling air. Moreover, the coil support body 17c functions also as a member which forms the cooling air path which sends a cooling air so that it may mention later.

  No opening is provided in the bottom surface of the portion of the coil support 17c that protrudes from the right side wall of the main body housing 2, that is, the bottom surface of the protrusion 171c. On the other hand, a cooling air inlet 21 is provided on the bottom surface of the coil support body 17c except for the protruding portion 171c. In the present embodiment, a plurality of types of inflow ports 21 having different functions and structures are provided, and in the following description, there may be a case where they are distinguished from each other by adding a subscript such as the inflow ports 21a and 21b.

  The high magnetic permeability magnetic body 38 is made of, for example, ferrite. A plurality of high magnetic permeability magnetic bodies 38 are provided, but in the present embodiment, those arranged on the projecting portion 171c of the coil support 17c (hereinafter referred to as the first high magnetic permeability magnetic body 38a). The shape is different from that disposed on the portion other than the protruding portion 171c (hereinafter referred to as the second high permeability magnetic body 38b). Specifically, the first high magnetic permeability magnetic body 38a disposed on the protruding portion 171c of the coil support body 17c is wider and thinner than the others. In the state where the induction heating cooker 1 is assembled in the kitchen, the protrusion 171c overlaps the kitchen top plate 201, so that the space in the height direction is limited, but by reducing the thickness of the first high permeability magnetic body 38a. In addition, it is possible to secure an installation space for the air guide structure for the cooling air led to the first high magnetic permeability magnetic body 38a and the heating coil 13.

  The first high magnetic permeability magnetic body 38 a disposed on the protruding portion 171 c of the coil support body 17 c is substantially fan-shaped and is disposed so as to cover the lower side of the heating coil 13. By disposing the first high permeability magnetic body 38a so as to cover the lower side of the heating coil 13, the focusing of the high frequency magnetic flux is increased and the downward magnetic flux is further reduced to further reduce the protrusion 171c of the coil support 17c and the kitchen ceiling. It can be reduced that the high frequency magnetic flux reaches the plate 201 and generates heat. On the other hand, the second high magnetic permeability magnetic body 38b disposed on the coil support body 17c other than the projecting portion 171c has a substantially beat-tree shape, and is provided radially with a gap therebetween. By arranging the second high permeability magnetic body 38b with a gap between them in this way, an air passage for cooling air is secured and the cooling efficiency of the second high permeability magnetic body 38b and the heating coil 13 is increased. .

  The high-permeability magnetic body 38 focuses and deflects the high-frequency magnetic flux generated by the heating coil 13 and directs it toward the object to be heated above, and suppresses the magnetic flux from moving downward to the coil support 17c and the kitchen top plate 201. There is a function to suppress the passage of magnetic flux. The high permeability magnetic body 38 itself generates heat as the high permeability magnetic body 38 exhibits its function. Therefore, it is desirable to cool the high permeability magnetic body 38. In this embodiment, the high permeability magnetic body 38 is cooled. The structure for cooling is adopted.

  A magnetic body cooling hole 40 is formed on the bottom surface of the coil support body 17c excluding the protruding portion 171c and below the second high magnetic permeability magnetic body 38b. On the magnetic body cooling hole 40, the second high permeability magnetic body 38b is disposed. The outer shape of the magnetic body cooling hole 40 is slightly smaller than the outer shape of the second high permeability magnetic body 38b, and the second high permeability magnetic body 38b does not fall, but the second high permeability magnetic body 38b. Is cooled by being exposed to cooling air through the magnetic body cooling hole 40.

  A fin 34 formed by cutting and raising the bottom surface of the coil support 17c downward is provided on a part of the side of the magnetic body cooling hole 40. By providing the fins 34 on the coil support body 17c, the cooling efficiency of the coil support body 17c is enhanced by promoting the collision of the cooling air with the coil support body 17c. In addition, by forming the fin 34 using the bottom surface of the coil support 17c that has been hollowed out to form the magnetic body cooling hole 40, there is no need to add a new part for forming the fin 34. An increase in manufacturing cost can be suppressed.

  An infrared sensor unit 43 is attached to the lower side of the bottom surface of the coil support 17c. The infrared sensor unit 43 is a sensor that detects the temperature of an object to be detected based on the detected infrared ray. The infrared sensor unit 43 is attached so that the light receiving portion thereof faces upward, that is, the coil support 17c side. An infrared sensor window 41 is provided at a position on the bottom of the coil support 17c where the light receiving unit of the infrared sensor unit 43 is disposed. On the outer periphery of the infrared sensor window 41 on the upper surface of the coil support 17c, an infrared sensor shield 41a, which is a cylindrical tube that stands up along the outer periphery, is provided. By providing the infrared sensor shielding part 41 a, it is possible to suppress an unnecessary high frequency magnetic field and infrared rays emitted from things other than the detection target from affecting the infrared detection process of the infrared sensor unit 43.

  A thermistor unit 44 that contacts the lower surface of the heating coil 13 and detects its temperature is provided above the coil support 17c and below the heating coil 13. The thermistor unit 44 is sandwiched between the upper surface of the coil support 17c and the lower surface of the partition member 18c. A cylindrical thermistor shielding portion 45 erected upward is provided at the bottom of the coil support 17 c so as to surround the outer periphery of the thermistor unit 44. By providing the thermistor shielding part 45, the influence of an unnecessary high-frequency magnetic field on the thermistor unit 44 is reduced, and the accuracy of temperature detection by the thermistor unit 44 is increased.

  A cylindrical nozzle 42a that protrudes upward from the upper surface of the coil support 17c is provided on the outer periphery of the plurality of inlets 21a formed in the coil support 17c. The cooling air from the main ventilation path 80 connected to the lower side of the coil support 17c is blown upward through the inlet 21 and the nozzle 42a, and the heating coil 13, particularly a double annular heating coil, disposed above. The outer part of 13 is cooled.

  An inflow port 21b having a larger opening area than the inflow port 21a is provided at a substantially central portion of the coil support 17c. A nozzle 42b (see FIG. 10) formed on the lower surface of the partition member 18c is disposed on the inflow port 21b, and an air guide structure is formed by the inflow port 21b and the nozzle 42b. Cooling air is guided to the inner portion of the coil 13, particularly the double annular heating coil 13.

  A long and narrow inlet 50 along the radial direction of the coil support 17c is provided at a position adjacent to the protrusion 171c of the coil support 17c. Above the inflow port 50, inlets of cooling ducts 91 and 92, which will be described later, are formed below the partition member 18c.

  The partition member 18c is a substantially disk-shaped member, and holds the heating coil 13 on its upper surface. The partition member 18c is a part of the structure of the cooling duct that holds the high permeability magnetic body 38 and guides the cooling air supplied from the lower side of the coil support body 17c to the heating coil 13.

  Three arcuate cooling ducts 91 are formed on the upper surface side of the partition member 18c below the winding on the outer peripheral side of the heating coil 13. The bottom surface and the side wall of the cooling duct 91 are constituted by a part of the partition member 18c. When the heating coil 13 is placed on the cooling duct 91, the lower surface of the heating coil 13 constitutes the upper surface of the cooling duct 91, and the cooling air flows in the cooling duct 91 in the circumferential direction. The bottom of is cooled. The cooling air blown mainly from the inflow port 50 flows into the opening on one end side of the cooling duct 91, and the cooling air passing through the cooling duct 91 flows out from the opening on the other end side. By providing a plurality of cooling ducts 91 in the radial direction (three in the present embodiment), a flow of cooling air along the circumferential direction of the heating coil 13 can be formed, and a stagnant region with little passage of cooling air Has been reduced.

  A flange-like chamber 46 extending outward from the outer periphery of the partition member 18c is provided at a portion of the outer periphery of the partition member 18c that is located on the protruding portion 171c of the coil support 17c. The chamber 46 is provided in an arc shape along the outer periphery of the partition member 18c, and a cooling duct 92 is formed between the lower surface of the chamber 46 and the outer surface of the side wall of the partition member 18c. When the partition member 18c is disposed on the coil support 17c, the bottom surface of the protrusion 171c of the coil support 17c constitutes the lower surface of the cooling duct 92, and the outer side surface of the cooling duct 92 corresponds to the side wall of the protrusion 171c. The inner surface is formed. A plurality of partition member air outlets 92c are provided on the side wall of the partition member 18c constituting the cooling duct 92, and a part of the cooling air flowing in the circumferential direction in the cooling duct 92 passes through the partition member air outlet 92c. It blows out toward the side surface of the heating coil 13 and cools the heating coil 13. The cooling air blown from the partition member outlet 92c toward the heating coil 13 flows through a gap formed between the upper surface of the heating coil 13 and the top plate 4, and the heating coil 13 is also cooled in this process.

  On the upper surface of the heating coil 13, a rod-shaped seal member 47a extending in the radial direction of the heating coil 13 is provided. The seal member 47a is a member that closes the space between the upper surface of the heating coil 13 and the lower surface of the top plate 4 disposed thereon, and is made of a material having water tightness and air tightness such as synthetic resin and rubber. Is done. In the state where the induction heating cooker 1 is assembled, an air passage for cooling air is formed between the upper surface of the heating coil 13 and the lower surface of the top plate 4 as shown in FIG. See cooling duct 94). The seal member 47a is provided to allow the cooling air flowing into the air passage to flow along the air passage.

  FIG. 10 is an exploded perspective view of the right coil support body 17c and the components supported by the right coil support body 17c according to the first embodiment as viewed from below. On the lower surface of the partition member 18c, a magnetic body holding portion 48a for holding the first high magnetic permeability magnetic body 38a and a magnetic body holding portion 48b for holding the second high magnetic permeability magnetic body 38b are provided. The magnetic body holding portion 48a for holding the fan-shaped first high permeability magnetic body 38a connects the radial side wall 481a substantially along the outer shape of the first high permeability magnetic body 38a and the opposing side wall 481a. A plurality of (three in the present embodiment) arc-shaped support frames 482a provided, and the first high-permeability magnetic body 38a is disposed on the outer peripheral side in a slit-like opening formed above the support frame 482a. Is inserted from. In a state where the first high permeability magnetic body 38a is held by the partition member 18c, the lower surface of the first high permeability magnetic body 38a and between the upper surface of the first high permeability magnetic body 38a and the lower surface of the partition member 18c. And an upper surface of the coil support 17c, a gap is formed, and this gap functions as a cooling duct through which cooling air passes. In the present embodiment, since a plurality of arc-shaped support frames 482a are provided as a part of the partition member 18c, a plurality of circumferential (three in this embodiment) cooling ducts 91 are provided below the support frames 482a. Can be formed, and a flow of cooling air along the circumferential direction can be formed. As a result, the air stagnant area where the passage of cooling air is small is reduced, cooling unevenness is suppressed, and the cooling efficiency is enhanced.

  An air inlet 92a is formed at one end of a cooling duct 92 formed on the lower side of the circumferential chamber 46 provided on the outer peripheral side of the heating coil 13, and an outlet 92b is formed at the other end. Is formed. In the process of passing through the cooling duct 92, the cooling air flowing in from the inlet 92 a cools the partition member 18 c constituting the upper surface of the cooling duct 92 and the coil support body 17 c constituting the lower surface of the cooling duct 92. Thereby, while suppressing the damage and deterioration of the coil support body 17c due to heat, there is an effect of reducing unnecessary heating of the kitchen top plate 201. A part of the cooling air passing through the cooling duct 92 is blown out from the partition member outlet 92 c toward the outer peripheral side surface of the heating coil 13, that is, toward the radial center of the partition member 18. Thereby, cooling air collides with the outer peripheral side surface of the heating coil 13 to cool the heating coil 13.

  The infrared sensor unit 43 is disposed on the lower surface of the coil support 17 c and between the fins 34. By doing so, the fins 34 on both side surfaces of the infrared sensor unit 43 function as magnetic shield plates, and the influence of the high frequency magnetic flux from the heating coil 13 is also reduced on both side surfaces of the infrared sensor unit 43. The influence of the high frequency magnetic flux on the upper surface of the infrared sensor unit 43 is reduced by the bottom of the coil support 17c, and the temperature detection accuracy of the infrared sensor unit 43 can be increased.

  An elastic body holding portion 37 is provided on the supported portion 30 of the coil support body 17c. The elastic body holding portion 37 according to the present embodiment is composed of a plurality of claws formed by cutting and raising a part of the coil support body 17c (a part of the supported part 30) downward. The elastic body 15 is fitted inside and locked to the elastic body 15. With such a configuration, the positioning accuracy between the coil support 17c and the elastic body 15 is increased. Further, since the elastic body holding portion 37 is formed by using a part of the coil support body 17c, there is an effect of suppressing an increase in manufacturing cost without requiring additional parts.

  A plurality of support outlets 22c are provided in the outer peripheral portion of the bottom of the coil support 17c and in the portion facing the intermediate heating coil 12 in a state where the coil support 17c is assembled to the main body housing 2. ing. Although the support outlet 22c can be formed by a simple opening, in the present embodiment, the bottom of the coil support 17c is recessed downward, and an opening is provided on the outer side surface of the recess to support this. The body outlet 22c is used. The recess formed in the coil support 17c functions as a flow path from the bottom of the coil support 17c to the support outlet 22c, and increases the directivity of the cooling air blown from the support outlet 22c. The cooling efficiency of the target intermediate heating coil 12 can be improved. In addition, by forming this recess by drawing, it can be manufactured without the need for additional parts, and an increase in manufacturing cost can be suppressed.

  On the lower surface of the coil support 17c, an earth connection portion 31 for connecting the coil support 17c to ground is provided. One end of a ground wire 32 is connected to the ground connection portion 31, and the other end of the ground wire 32 is connected to a terminal block 36 provided on the ventilation body 70 (see FIG. 6). As described above, since the connection to the terminal block 36 can be performed using the right connection port 72 formed in the ventilation body 70, the workability of assembling the induction heating cooker 1 is good.

  Further, the coil support 17 c is connected to the main body housing 2 by a ground wire 32. Since the main body housing 2 is grounded and grounded via a power cable or the like, the coil support 17c can be obtained simply by connecting the ground connection portion 31 and the terminal block 36 of the main body housing 2 with the ground wire 32. Can be easily grounded. Moreover, the radiation noise radiated | emitted from the heating coil 13 can be reduced, and even if it leaks from the heating coil 13 by any chance, it is earthed appropriately and the electric shock through the kitchen cabinet 200 can be prevented. In the present embodiment, the ground wire 32 is used for ground connection, but a metal spring having conductivity is used as the elastic body 15, and the elastic body holding portion 37 of the main body housing 2 is attached to the main body housing 2. The coil support 17c can be grounded by forming it on the metal portion. Even if it does in this way, the effect of earth connection can be obtained similarly.

  11A and 11B are perspective views of the right coil support 17c and its accessory parts according to the first embodiment, where FIG. 11A is a perspective view seen from above, and FIG. 11B is a perspective view seen from below. In FIG. 11, the flow of cooling air is conceptually indicated by arrows. As indicated by an arrow 300, a part of the cooling air supplied from the lower side of the coil support body 17c circulates around the gap (cooling duct 91) formed on the lower side and the upper side of the first high permeability magnetic body 38a. The first high-permeability magnetic body 38a, the partition member 18c, and the coil support body 17c are cooled.

  As indicated by an arrow 301, part of the cooling air supplied from the lower side of the coil support 17 c flows through a circumferential cooling duct 92 formed on the lower side of the chamber 46, and reaches the inner peripheral wall of the cooling duct 92. The heating coil 13 is cooled by being sprayed to the outer peripheral surface side of the formed heating coil 13. As indicated by an arrow 302, the cooling air that has exited from the outlet 92b of the cooling duct 92 passes through an air passage formed between the outer peripheral wall of the coil support 17c and the outer peripheral wall of the partition member 18c, and is indicated by an arrow 303. As shown, it blows out from the support outlet 22c.

  As indicated by an arrow 304, a part of the cooling air supplied from the lower side of the coil support 17c passes above the coil support 17c through a plurality of inflow ports 21a formed at the bottom of the coil support 17c. The flow, the high permeability magnetic body 38, the partition member 18c, and the heating coil 13 are cooled.

  FIG. 12 is a partial cross-sectional view of the coil support 17c portion on the right side of induction heating cooker 1 and kitchen top plate 201 according to Embodiment 1. With reference to FIG. 12, it demonstrates centering on the structure which concerns on the cooling of the member mounted on the protrusion part 171c of the coil support body 17c, ie, the kitchen top plate 201. FIG.

  On the upper side of the kitchen top plate 201, a protruding portion 171c of the coil support 17c, a first high permeability magnetic body 38a thereon, a partition member 18c thereon, a heating coil 13 thereon, and a top plate 4 thereon Is placed. Between the upper surface of the protrusion 171c of the coil support 17c and the lower surface of the first high magnetic permeability magnetic body 38a, a circumferential cooling duct 91 is provided in plan view (see FIG. 9). A gap is formed between the upper surface of the partition member 18 c and the lower surface of the heating coil 13, and this gap is referred to as a cooling duct 93. The cooling duct 93 is located above the cooling duct 91 and is a circumferential air passage in the same plan view as the cooling duct 91. A gap is also formed between the upper surface of the heating coil 13 and the lower surface of the top plate 4, and this gap is referred to as a cooling duct 94. The cooling duct 94 is located above the cooling duct 91 and the cooling duct 93, and is an arcuate air path in plan view similar to the cooling duct 91 and the cooling duct 93.

  A part of the cooling air flowing through the cooling duct 93 below the heating coil 13 passes through the gap between the windings of the heating coil 13 and the gap between the partition members 18 c and flows into the cooling duct 94 above the heating coil 13. . The cooling duct 94 is hermetically sealed by a seal member 47a (see FIG. 9), and the cooling air can cool the upper surface of the heating coil 13 without unnecessarily diffusing from the cooling duct 94.

  As described above, a gap serving as an air passage for the cooling air is provided between a plurality of members disposed on the upper side of the kitchen top plate 201, and the cooling air passes through these gaps so that heating is performed. The coil 13, the coil support 17c, the partition member 18c, and the first high permeability magnetic body 38a are cooled. Thereby, while damaging and deterioration by the heat of these members are reduced, the unnecessary heating of the kitchen top plate 201 by heat transfer can be suppressed.

  FIG. 13 is an exploded perspective view of the left coil support 17a and its accessory parts according to Embodiment 1 as viewed from above. FIG. 14 is an exploded perspective view of the left coil support body 17a, the partition member 18a, and the accessory parts of the partition member 18a according to Embodiment 1 as viewed from below. In FIG. 14, the flow of cooling air is conceptually indicated by arrows. A partition member 18a that partitions the heating coil 11 and the coil support 17a is provided below the heating coil 11, and a plurality of high permeability magnetic bodies 39 are provided below the partition member 18a. . The basic configurations of the coil support 17a, the partition member 18a, and the high permeability magnetic body 39 are the same as those of the coil support 17c, the partition member 18c, and the high permeability magnetic body 38 described above. The difference will be mainly described.

  The high permeability magnetic body 39 is disposed below the heating coils 11a to 11e disposed on the outer peripheral side (referred to as a high permeability magnetic body 39a) and below the heating coil 11e disposed on the inner peripheral side. Are different in shape (high magnetic permeability magnetic body 39b). The high magnetic permeability magnetic body 39a has a substantially rod shape having a convex portion at the center of the upper surface, and a plurality of high magnetic permeability magnetic bodies 39a are radially arranged on the magnetic body holding portions 49a formed below the heating coils 11a to 11d. The convex portion on the upper surface of the high permeability magnetic body 39a is fitted into the magnetic body cooling hole 40 of the magnetic body holding portion 49a formed in the partition member 18a, whereby the high permeability magnetic body 39a is held by the partition member 18a. Is done. Unlike the high-permeability magnetic body 38, the same high-permeability magnetic body 39a is used regardless of whether or not it is disposed on the protrusion 171a of the coil support 17a. As a standard, the cost of manufacturing is reduced. The high magnetic permeability magnetic body 39b has a substantially rod shape, and a plurality of high magnetic permeability magnetic bodies 39b are arranged radially below the heating coil 11e. The high magnetic permeability magnetic body 39b is fitted into a frame-shaped magnetic body holding portion 49b formed on the lower surface of the partition member 18a and is held by the partition member 18a.

  The protrusion 171a of the coil support 17a, that is, the portion located above the kitchen top plate 201 when the induction heating cooker 1 is incorporated in the kitchen cabinet 200 is not provided with an opening. By doing in this way, the high frequency magnetic flux from the heating coil 11 is shielded, and the leakage of the high frequency magnetic flux to the outside is suppressed.

  An inlet 21a provided with a nozzle 42a and a magnetic body cooling hole 40 are provided in a portion excluding the projecting portion 171a of the coil support 17a, and these configurations are the same as those described for the coil support 17c. It is a configuration. The cooling air supplied to the lower side of the coil support 17a is blown upward through the inflow port 21a and the nozzle 42a, and passes through the heating coils 11b to 11e disposed in the portion excluding the protruding portion 171a of the coil support 17a. Cooling. By the action of the nozzle 42a functioning as a wind guide structure, the collision jet is supplied to the heating coils 11b to 11e and can be efficiently cooled. Further, the lower surface of the high permeability magnetic body 39 is exposed from the magnetic body cooling hole 40, and the high permeability magnetic body 39 is cooled by the cooling air flowing below the coil support 17a.

  A plurality of support outlets 22a are formed in positions on the outer peripheral wall of the coil support 17a that face the intermediate heating coil 12 in a state assembled to the main body housing 2. Unlike the above-described support outlet 22c formed in the coil support 17c, the support outlet 22a formed in the coil support 17a is provided on the outer peripheral wall of the coil support 17a and includes a plurality of support outlets 22a. It is composed of an elliptical opening. By blowing out the cooling air in the coil support 17a from the support outlet 22a, the cooling air is sent to the heating coil 12 and the cooling efficiency of the heating coil 12 is improved.

  The ground connection portion 31 provided on the coil support body 17a protrudes outward from the outer peripheral portion of the coil support body 17a, thereby facilitating the connection of the ground wire 32 (see FIG. 16) and improving the assembly workability. In addition, grounding the coil support 17a has an effect of reducing radiation noise.

  In the vicinity of the protrusion 171a of the coil support 17a, inflow ports 51, 52, 53, and 54 are provided. These inflow ports 51 to 54 are respectively connected to a plurality of left connection ports 71a of the ventilation body 70 shown in FIGS. In the present embodiment, the left connection port 71a is formed in a cylindrical shape protruding upward, and this cylindrical part is inserted into the inflow ports 51 to 54, and the cooling air is highly airtight to the inflow ports 51 to 54. The cooling efficiency is enhanced by inflow.

  A plurality of partition member air outlets 61 to 64 for blowing cooling air to the upper side of the partition member 18a are formed in a portion of the partition member 18a located above the protruding portion 171a of the coil support body 17a. The partition member outlets 61 to 64 blow out the cooling air blown from the inflow ports 51 to 54, respectively.

  As shown by an arrow 311 in FIG. 14, the cooling air blown out above the coil support 17a through the inlet 51 circulates around a generally arc-shaped cooling duct 95 formed on the outer periphery of the lower surface of the partition member 18a. It flows in a shape. Here, the cooling duct 95 is located above the protruding portion 171 a of the coil support body 17 a, that is, below the heating coil 11 a, and a part of the cooling duct 95 is opened toward the inflow port 51. The partition member 18a is provided with a plurality of partition member outlets 61 communicating with the cooling duct 95 at positions overlapping the heating coil 11a when viewed from above. In the cooling duct 95, auxiliary air passages that lead to the plurality of partition member outlets 61 are formed. The cooling air that has flowed into the cooling duct 95 flows in a diverted manner to the plurality of auxiliary air passages, exits upward from the partition member outlet 61 provided on the upper surface, and cools the heating coil 11a disposed on the upper side. .

  The upper surface of the cooling duct 95 is substantially the same height as the upper surface of the heating coil 11, and the cooling is within the height dimension of the coil support 17 a that is substantially equal to the total height dimension of the heating coil 11 and the high permeability magnetic body 39. The duct 95 is accommodated. By doing in this way, the height dimension of the top plate frame 3 can be lowered, and when the induction heating cooker 1 is incorporated in the kitchen cabinet 200, the kitchen top plate 201 and the top plate frame 3 It is possible to reduce the level difference between the two and improve the workability of cooking.

  As shown by an arrow 312 in FIG. 14, the cooling air blown out above the coil support 17a through the inflow port 52 flows through an arcuate cooling duct 96 formed on the lower surface of the partition member 18a. The partition member 18a is provided with a partition member outlet 62 communicating with the cooling duct 96 at a position overlapping the heating coil 11a when viewed from above. The cooling air that has flowed into the cooling duct 96 flows in the circumferential direction, flows upward from the partition member outlet 62, and cools the heating coil 11a disposed on the upper side. Since the cooling air is blown out to the heating coil 11a, the effect of heat transfer from the collision jet is obtained, and the heating coil 11a can be efficiently cooled.

  Here, although the opening area of the inflow port 51 and the inflow port 52 is substantially the same, the opening area of the partition member outlet 61 provided corresponding to the inflow port 51 (the opening area of the plurality of partition member outlets 61). (Total) is larger than the total opening area of the partition member outlets 62 provided corresponding to the inflow ports 52. This is due to the difference in the distance between the inlet 51 and the inlet 52 from the blower 27. That is, the cooling air is supplied to the inlets 51 and 52 from the same left auxiliary ventilation path 81a (see FIGS. 5 and 6), but the distance from the blower 27 to the inlet 52 is from the blower 27. Since the distance to the inlet 51 is longer than the distance to the inlet 51, the amount of cooling air supplied is smaller at the inlet 52. For this reason, by relatively reducing the opening area of the partition member outlet 62 corresponding to the inflow port 52, the air volume of the cooling air blown from the partition member outlet 61 and the partition member outlet 62 is made close to uniform, This reduces the cooling unevenness of the heating coil 11a and increases the cooling efficiency.

  As shown by an arrow 313 in FIG. 14, the cooling air blown out above the coil support 17a through the inlet 53 flows through an arc-shaped cooling duct 97 formed on the lower surface of the partition member 18a. The cooling duct 97 is provided closer to the center of the partition member 18 a than the cooling duct 95. The partition member 18a is provided with a partition member outlet 63 communicating with the cooling duct 97 at a position overlapping the heating coil 11a when viewed from above. The cooling air that has flowed into the cooling duct 97 flows in the circumferential direction, flows out upward from the partition member outlet 63, and cools the heating coil 11a disposed on the upper side. Since the cooling air is blown out to the heating coil 11a, the effect of heat transfer from the collision jet is obtained, and the heating coil 11a can be efficiently cooled.

  As indicated by an arrow 314 in FIG. 14, the cooling air blown out above the coil support 17a through the inlet 54 flows through a radial cooling duct 98 formed on the lower surface of the partition member 18a. The cooling duct 98 is provided closer to the center of the partition member 18 a than the cooling duct 95. The partition member 18a is provided with a partition member outlet 64 that communicates with the cooling duct 98 at a position overlapping the heating coil 11a when viewed from above. The cooling air flowing into the cooling duct 97 flows in the radial direction of the heating coil 11a from the outside to the inside of the winding, flows out upward from the partition member outlet 64, and passes through the heating coil 11a disposed on the upper side. Cooling. Since the cooling air is blown out to the heating coil 11a, the effect of heat transfer from the collision jet is obtained, and the heating coil 11a can be efficiently cooled.

  The cooling ducts 95 to 98 have a lower surface constituted by the coil support body 17a, a side surface constituted by the side surfaces of the partition member 18a and the high magnetic permeability magnetic body 39, and an upper surface constituted by the partition member 18; The coil support 17a, the partition member 18a, and the high magnetic permeability magnetic body 39 are also cooled by the cooling air passing through .about.98. Thus, a wind guide structure having a compact configuration and high cooling efficiency is obtained.

  FIG. 15 is a partial cross-sectional view of the left coil support 17a portion of the induction heating cooker 1 and the kitchen top plate 201 according to the first embodiment. With reference to FIG. 15, it demonstrates centering on the structure which concerns on the cooling of the member mounted on the protrusion part 171a of the coil support body 17a, ie, the kitchen top plate 201. FIG.

  A gap 401 is formed between the bottom surface of the protrusion 171a of the coil support 17a and the kitchen top plate 201. By arranging the coil support 17a so that the gap 401 is formed on the lower side of the coil support 17a in this way, the air layer in the gap 401 functions as a heat insulating layer, and the heat of the coil support 17a is directly applied to the kitchen. It is suppressed from being transmitted to the top plate 201 and being heated. In addition, a seal member 47b that is in contact with the kitchen top plate 201 is provided on the lower surface of the top plate frame 3 to prevent intrusion of liquid or the like from the part. Even if it passes through and flows into the lower side of the top plate frame 3, since the liquid does not accumulate due to the gap 401, the infiltration of the liquid into the coil support body 17a is suppressed.

  In the present embodiment, the air layer in the gap 401 is used for heat insulation, but a heat insulating sheet may be provided on the bottom surface of the coil support 17a. The heat insulating sheet may be made of a material having a lower thermal conductivity than the coil support 17a. By providing a heat insulating sheet between the coil support 17a and the kitchen top plate 201, the heat insulating performance with respect to the kitchen top plate 201 can be further enhanced.

  FIG. 16 is a top view of the induction heating cooker 1 according to Embodiment 1 with the top plate frame 3 and accompanying parts removed. In FIG. 16, for the sake of explanation, the heating coils 11 to 13 are indicated by two-dot chain lines, and the flow of the cooling air is conceptually indicated by arrows.

  A part of the cooling air blown out from the substrate case unit 24 (not shown in FIG. 16, see FIG. 5) passes through the right auxiliary ventilation path 82 provided in the ventilation body 70 to the right coil support body 17c. Supplied. The cooling air supplied to the coil support 17c cools the coil support 17c and the components supported by the coil support 17c, and goes out of the coil support 17c through the support outlet 22c. The cooling air coming out of the coil support 17c flows toward the intermediate heating coil 12 to cool it, and then flows into the exhaust air passage 23 and is exhausted.

  Further, a part of the cooling air blown out from the substrate case unit 24 (not shown in FIG. 16, refer to FIG. 5) passes through the left auxiliary ventilation paths 81a and 81b provided in the ventilation body 70, and the right coil. It is supplied to the support 17a. The cooling air flowing through the left auxiliary ventilation path 81a cools the protrusion 171a of the coil support 17a and the members such as the heating coil 11a supported by the protrusion 171a. The cooling air flowing through the left auxiliary ventilation path 81b cools the portion of the coil support 17a excluding the projecting portion 171a and the heating coils 11b to 11e supported by the coil support 17a, and passes through the support outlet 22a to the coil support. Go out of 17a. The cooling air coming out of the coil support 17a flows toward the intermediate heating coil 12 to cool it, and then flows into the exhaust air passage 23 and is exhausted.

  Next, the operation of the induction heating cooker will be described. When the user operates the operation unit 6 to instruct the heating operation, the driving unit is controlled by the control unit mounted on the electronic circuit board in the substrate case unit 24. When the heating coils 11, 12, 13 are driven and a high-frequency current flows, a high-frequency magnetic field is generated from the heating coils 11, 12, 13 and is placed on the top plate 4 substantially above the heating coils 11, 12, 13. An eddy current is generated in the heated object (not shown), the heated object itself generates heat, and cooking is performed. At this time, due to the action of the high permeability magnetic body held by the coil supports 17a, 17b, and 17c, the magnetic field lines are concentrated on the object to be heated above, thereby increasing the heating efficiency.

  By driving the heating coils 11, 12, and 13, the electronic component mounted on the electronic circuit board self-heats and the temperature rises. Further, the windings of the heating coils 11, 12 and 13 also generate heat and the temperature rises. In order to maintain the functions of the electronic circuit board and the heating coils 11, 12 and 13, it is necessary to suppress these temperature rises within a predetermined temperature range. For this reason, the control means drives and controls the blower device 27 based on information output from temperature detection means (not shown) provided in various places. By operating the blower 27, cooling air is blown.

  The cooling air is sucked into the main body housing 2 from the outside of the main body housing 2 through the vent cover 7 and the housing air inlet 8. An intake port 25 of the substrate case unit 24 is connected to the housing intake port 8, and the cooling air sucked from the housing intake port 8 flows into the substrate case unit 24 from the intake port 25. The cooling air that has flowed into the substrate case unit 24 is sucked and sent to the blower 27, cools the components of the electronic circuit board in the substrate case unit 24, and then passes through the front exhaust port 26a and the rear exhaust port 26b. It flows out of the substrate case unit 24. The subsequent flow of the cooling air is as described with reference to FIG.

  As described above, the induction heating cooker 1 according to the present embodiment has a main body housing that is inserted into the storage unit 203 of the kitchen cabinet 200 through the top plate opening 202 of the kitchen top plate 201 provided on the upper surface of the kitchen cabinet 200. When the body 2 and the top plate part (the top plate frame 3 and the top plate 4) wider than the main body case 2 are provided on the main body case 2, the object to be heated is placed on the top plate part. Heating coils 11 and 13 for induction heating of objects, and air inlets 21a to 21b and 51 to 54 are formed, and coil supports 17a and 17c for supporting the heating coils 11 and 13 from below are provided. 17a and 17c are projections that are located outside the main body housing 2 in a top view and are disposed at positions that overlap the kitchen top plate 201 in a top view in a state where the main body housing 2 is inserted into the storage unit 203. 71a, has 171c, the coil support 17a, 17c of the protruding portion 171a, the 171c, a portion of the heating coil 11, 13 is supported.

  In the present embodiment, the size and arrangement of the heating coils 11 and 13 can be selected without being restricted by the size of the top plate opening 202 formed in the kitchen top plate 201. Thereby, the cooking space of a top plate part can be expanded more. Since the heating coils 11 and 13 can be arranged outside the main body housing 2 inserted into the top plate opening 202 of the kitchen cabinet 200, a top plate portion wider than the main body housing 2 can be provided. Therefore, the degree of freedom of the size of the heating ports 5a and 5c is increased, and the distance between the heating ports 5 can be increased. Accordingly, the user can easily place the cooking container on the top plate and move the cooking container, and place the cooking container on the other heating port 5 when performing a cooking operation such as a pot shake. It is possible to suppress contact with the cooking container. Moreover, since many areas where the heating port is not arranged can be provided on the top plate 4, a space for performing cooking work other than heating cooking, such as a work for placing the cooking container on the top plate 4 to the tableware, is secured. It is possible to improve the workability of the user's cooking and to improve the work environment. In addition, when the heating coils 11 to 13 of the adjacent heating ports 5 are simultaneously driven, interference sound may be generated from a heated object such as a pan due to the difference in wavelength of the high frequency power to be driven. By increasing the size, an effect of reducing the interference sound can be obtained. Moreover, since the freedom degree of the magnitude | size of the heating port 5 increases, the freedom degree of the arrangement | positioning area | region of the heating coils 11-13 provided in the heating port 5 is also expanded. For this reason, like the heating port 5a of this Embodiment, the some heating coil 11a-11e arrange | positioned in the center in one heating port 5a can be provided. By providing such a plurality of heating coils 11a to 11e, it becomes possible to perform cooking by combining the plurality of heating coils 11a to 11e in accordance with the shape and size of the object to be heated, and high-function induction heating. The cooker 1 can be obtained.

  In the state where the main body housing 2 is inserted into the storage unit 203, the coil support 17a is formed such that a gap is formed between the kitchen top plate 201 and the lower surfaces of the protrusions 171a and 171c of the coil supports 17a and 17c. , 17c. For this reason, heat transfer from the coil supports 17a and 17c to the kitchen top plate 201 is reduced, and damage and deterioration of the kitchen top plate 201 due to heat can be suppressed. Moreover, the contact of the liquid that has entered between the kitchen top plate 201 and the top plate 4 with the coil supports 17a and 17c can be reduced, and the coil supports 17a and 17c can be prevented from being soiled, corroded, and reduced in insulation. Can be suppressed.

  The coil supports 17a and 17c are provided with three or more supported parts 30 supported by the main body housing 2, and the center of gravity of the coil supports 17a and 17c in a state where the heating coils 11 and 13 are supported is three or more supported parts. It is located inside the outline that connects the support portions 30. For this reason, in the assembly process of the induction heating cooker 1, when the coil supports 17a and 17c are placed on the elastic body 15, the coil supports 17a and 17c are stably supported by the elastic body 15, This has the effect of improving the assembly workability during manufacturing and maintenance.

  The inlets 51 to 54 of the coil supports 17a and 17c are arranged at positions overlapping the main body housing 2 in a top view. For this reason, the left connection port 71 and the right connection port 72 of the ventilation body 70 that supplies the cooling air to the coil supports 17a and 17c can be arranged inside the main body housing 2, and the outside of the main body housing 2 is connected to the outside. The ventilation body 70 need not be mounted. Therefore, the height dimension of the installation space of the coil supports 17a and 17c arranged on the main body housing 2 can be reduced, and the top plate (top plate 4 and top plate frame 3) and kitchen top plate The step with 201 can be reduced.

  The coil supports 17a and 17c are made of a non-magnetic metal, and are formed of a material having electrical insulation between the heating coils 11 and 13 supported by the coil supports 17a and 17c. Partition members 18a and 18c. For this reason, the high-frequency magnetic flux generated from the heating coils 11 and 13 is concentrated on the upper object to be heated to increase the heating efficiency, and the unnecessary high-frequency magnetic flux downward is reduced. Moreover, since the high frequency magnetic flux leaking downward from the heating coils 11 and 13 is absorbed by the coil supports 17a and 17c formed of a nonmagnetic metal, the influence of the high frequency magnetic flux on other electrical components and electronic components is suppressed. can do. Therefore, the reliability of the product can be improved, and damage and deterioration due to the surroundings of the product such as the kitchen top plate 201 being heated by the high frequency magnetic flux can be suppressed.

  The partition member 18c has a side wall having substantially the same curvature as the outer periphery of the heating coil 13 disposed above the heating coil 13 placed on the protruding portion 171c of the coil support 17c. A gap serving as a cooling duct 91 is formed between the upper surface of the partition member 18 c and the lower surface of the heating coil 13. For this reason, the inlet 50 for supplying cooling air to the cooling duct 91 can be provided at an arbitrary position of the cooling duct 91. Further, the right connection port 72 of the ventilation body 70 is disposed below the inflow port 50. In addition to the right connection port 72, a space for introducing air is provided below the coil support body 17c. Since it is not necessary, the heating coil 13 can be easily mounted in a space having a low height dimension, and there is an effect of increasing the degree of freedom of component layout.

  In the partition member 18a, partition member outlets 61 to 64 are formed at positions facing the heating coil 11a mounted on the protruding portion 171a of the coil support 17a, and the partition member outlets 61 to 64 are The inlets 51 to 54 of the coil support 17a are disposed at positions that do not overlap with each other when viewed from above. Since the partition member outlets 61 to 64 are provided at positions facing the heating coil 11a, the heating coil 11a can be efficiently cooled by the collision jet heat transfer of the cooling air blown from the partition member outlets 61 to 64. . In addition, since the inlets 51 to 54 and the partition member outlets 61 to 64 are arranged at positions that do not overlap with each other in a top view, and a cooling duct that connects the two is provided, the degree of freedom of arrangement of the inlets 51 to 54 is increased. Can do. The inflow ports 51 to 54 are connected to the left connection port 71a of the ventilating body 70, but it is not necessary to provide a space for guiding air under the coil support member 17a other than the left connection port 71a. For this reason, the heating coil 11a can be easily mounted in a space having a low height dimension, and there is an effect of increasing the degree of freedom of component layout.

  The partition member 18a is formed with a partition member outlet 61 at a position facing the heating coil 11a placed on the protrusion 171a of the coil support 17a, and above the protrusion 171a of the coil support 17a. A cooling duct 95 communicating from the lower side of the heating coil 11a to the partition member outlet 61 is disposed on the outer peripheral side and the lower side of the heating coil 11a placed on the heating coil 11a. Since the partition member outlet 61 is disposed at a position facing the heating coil 11a, the heating coil 11a can be efficiently cooled by the collision jet heat transfer of the cooling air blown from the partition member outlet 61. Further, since the cooling duct 95 is disposed on the outer peripheral side of the heating coil 11a, the height of the cooling duct 95 is set to the total height of the coil support 17a (at least the total height of the heating coil 11a and the high permeability magnetic body 39a). And the flow passage cross-sectional area of the cooling duct 95 can be increased. For this reason, since the pressure loss at the time of cooling air passing through the cooling duct 95 falls and the amount of cooling air can be increased, there exists an effect which improves a cooling capability. In addition, the inflow port 51 is connected to the left connection port 71a of the ventilation body 70, but it is not necessary to provide a space for the air flow under the coil support body 17a other than the left connection port 71a. For this reason, the heating coil 11a can be easily mounted in a space having a low height dimension, and there is an effect of increasing the degree of freedom of component layout.

  The partition member 18 c has a side wall provided outside the outer periphery of the heating coil 13 disposed above the partition member 18 c, and a cooling duct is provided between the side wall of the partition member 18 c and the outer periphery of the heating coil 13. A gap serving as 92 is formed, and a partition member outlet 92 c is formed on the side wall of the partition member 18 c at a position facing the outer periphery of the heating coil 13. Since the cooling duct 92 is disposed on the outer periphery of the heating coil 13, the height of the cooling duct 92 is set to the total height of the coil support 17c (at least the total height of the heating coil 13 and the first high permeability magnetic body 38a). ), And the cross-sectional area of the cooling duct 92 can be increased. For this reason, since the pressure loss at the time of cooling air passing through the cooling duct 92 falls and the amount of cooling air can be increased, there exists an effect which improves a cooling capability. Since the partition member outlet 92c is disposed at a position facing the outer periphery of the heating coil 13, the heating coil 13 can be efficiently cooled by the collision jet heat transfer of the cooling air blown from the partition member outlet 92c. Further, by arranging the partition member air outlet 92 c on the side surface of the heating coil 13, the space for arranging the cooling air flow path and the air outlet is made smaller than when the air outlet is arranged below the heating coil 13. be able to. For this reason, the cooling duct that guides the cooling air to the heating coil 13 can be thinned to a dimension equivalent to the height dimension of the heating coil 13, which facilitates mounting of the heating coil 13 in a space having a low height dimension. This has the effect of increasing the freedom of layout. The inlet 50 for supplying the cooling air to the cooling duct 92 is connected to the right connection port 72a of the ventilation body 70. In addition to the right connection port 72a, the wind guide is provided below the coil support 17c. For this reason, it is not necessary to provide a space for the heating coil 13, so that the heating coil 13 can be easily mounted in a space having a low height dimension, and there is an effect of increasing the degree of freedom of component layout.

  High permeability magnetic bodies 38, 39 provided inside the coil supports 17a, 17c and below the heating coils 11, 13 are provided, and at least a part of the outer peripheral surfaces of the high permeability magnetic bodies 38, 39 are heated. A part of the wall surface of the cooling duct for guiding the cooling air to the coils 11 and 13 is formed. By providing the high magnetic permeability magnetic bodies 38 and 39, it is possible to increase the passage of the high-frequency magnetic flux to the object to be heated and increase the heating efficiency. Further, the heat generated by the high permeability magnetic bodies 38 and 39 constituting the wall surface of the cooling duct is cooled by the cooling air passing through the cooling duct, and the partition members 18a and 18c and the coil supports 17a and 17c are thermally damaged. Deterioration can be suppressed. Moreover, since these can be cooled, without increasing the height dimension of the high magnetic permeability magnetic bodies 38 and 39, there exists an effect which raises the freedom degree of mounting of the heating coils 11 and 13.

  The partition members 18 a and 18 c have magnetic body holding portions 48 and 49 that are a plurality of sets of convex portions for positioning and holding the heating coils 11 and 13 and the high magnetic permeability magnetic bodies 38 and 39, and the magnetic body holding portions 48 and 49. The high magnetic permeability magnetic bodies 38 and 39 were fitted between the opposing convex portions. For this reason, since each component is held at a predetermined position, variation in the distribution of the high-frequency magnetic flux can be suppressed and a predetermined heating performance can be obtained, so that the quality of the product can be improved.

  In the coil supports 17a and 17c, a filling hole 60 which is a through hole is formed at a position where the heating coils 11 and 13 supported by the coil supports 17a and 17c and the high permeability magnetic bodies 38 and 39 face each other. The high permeability magnetic bodies 38 and 39 are held by the adhesive filled in the filling hole 60. Thus, since the high magnetic permeability magnetic bodies 38 and 39 are hold | maintained with an adhesive agent, the assembly property of the induction heating cooking appliance 1 improves, and it can reduce manufacturing cost.

  A nonmagnetic metal having a flat plate shape that is provided on the outer peripheral side of the heating coils 11 and 13 and at a height position between the bottom surface of the heating coils 11 and 13 and the lower surface of the top plate 4. A formed ring member 29 was provided. By providing such a ring member 29 as a magnetic shield, it is possible to cover a wider area on the top surface of the top plate 4 than when a cylindrical magnetic shield is provided on the outer periphery of the heating coils 11 and 13. The influence of the leakage magnetic flux with respect to the thing and user who were mounted in addition to the heating port 5 of the plate 4 can be reduced. In addition, since the ring member 29 has a flat plate shape and the top plate 4 and the flat plate surface of the ring member 29 are opposed to each other, the pressure loss is increased and the cooling air leaks from the gap between the lower surface of the top plate 4 and the ring member 29. Can be reduced. As a result, the amount of cooling air flowing out from the coil supports 17a and 17c through the support outlets 22a and 22c can be maintained, and stable cooling performance can be obtained.

  Since the ring member 29 is formed integrally with the coil supports 17a and 17c, the number of parts and the assembling cost can be reduced, and the manufacturing cost can be reduced.

  The positioning member 16 provided on the upper surface of the ring member 29 that is a magnetic shielding plate and provided on the lower surface of the ring member 29 that faces the bottom surface of the top plate 4 and the positioning member 16, and supports the ring member 29 from below. The elastic body 15 is provided. For this reason, when the coil supports 17a and 17c are urged upward by the elastic body 15 and pressed against the lower surface of the top plate 4, the contact portion between the lower surface of the top plate 4 and the positioning member 16, and the elastic body 15 However, unnecessary moments are unlikely to occur. Therefore, even when a non-magnetic material with relatively low strength such as copper or aluminum is used for the coil supports 17a and 17c, deformation and damage are unlikely to occur. Further, the accuracy of the positional relationship in the height direction between the top plate 4 and the coil supports 17a and 17c is increased, and a predetermined high-frequency magnetic flux can be distributed above the top plate 4, so that stable heating performance is obtained. Can do.

  The left sub-portion is provided with a heating coil 11 corresponding to the left heating port 5a and a heating coil 13 corresponding to the right heating port 5c, and in the main ventilation path 80, the cooling air is diverted toward the heating coils 11, 13. A ventilation path 81 and a right auxiliary ventilation path 82 were provided. For this reason, stable cooling performance and heating operation can be obtained by adjusting the left sub-ventilation path 81 and the right sub-ventilation path 82 so as to supply cooling air according to the heat generation amount of the heating coils 11 and 13. Moreover, the noise of the blower device 27 due to the excessive cooling air supply can be reduced. Further, by providing the ventilation body 70 that forms the main ventilation path 80, the left auxiliary ventilation path 81, and the right auxiliary ventilation path 82 inside, the cooling air from the blower 27 is almost airtightly transferred to the heating coils 11 and 13. There is an effect of increasing the degree of freedom of the layout of the components in the main body housing 2 that are conveyed and have few restrictions on the arrangement of the blower 27 and the heating coils 11 and 13.

  A thermistor unit 44, which is a temperature detection device, is sandwiched between the upper surfaces of the coil supports 17a and 17c and the lower surfaces of the partition members 18a and 18c. For this reason, a fastening member such as a screw for attaching the thermistor unit 44 becomes unnecessary, and the manufacturing cost can be reduced. Further, since the thermistor unit 44 is built in the coil supports 17a and 17c, the degree of freedom of the mounting form of the heating coils 11 and 13 can be increased.

  An infrared sensor unit 43 that is disposed on the lower surfaces of the coil supports 17 a and 17 c and detects infrared energy from a heated object placed on the top plate 4 is provided. By configuring the coil supports 17a and 17c with a nonmagnetic metal, the coil supports 17a and 17c absorb the high frequency magnetic flux from the heating coils 11 and 13, and the influence of the high frequency magnetic flux on the infrared sensor unit 43 is reduced. . Therefore, noise due to the high frequency magnetic flux is reduced, and the detection accuracy of the infrared sensor unit 43 is improved.

  An infrared sensor shielding part 41a which is a cylindrical body provided along the outer periphery of the light receiving part of the infrared sensor unit 43 is provided on the upper surfaces of the coil supports 17a and 17c and above the infrared sensor unit 43. Thereby, the incidence of unnecessary infrared rays on the light receiving portion of the infrared sensor unit 43 is reduced, and the detection accuracy of the infrared sensor unit 43 is improved.

  In the main ventilation path 80, a plurality of left auxiliary ventilation paths 81a and 81b for diverting the cooling air toward the projections 171a of the coil support 17a and the portions excluding the projections 171a of the coil support 17a are provided. It was. Further, in the main ventilation path 80, right auxiliary ventilation paths 82a and 82b for diverting the cooling air toward the projecting portion 171c of the coil support 17c and the portions other than the projection 171c of the coil support 17c are provided. It was. The air guide structure of the projecting portion 171a placed on the upper side of the kitchen top plate 201 and the member attached thereto is different from the air guide structure of the member disposed on the main body housing 2 in terms of pressure loss and necessary cooling. Although the airflow is different, it is easy to ensure an appropriate amount of cooling air by providing a plurality of auxiliary ventilation paths and diverting the cooling air as in the present embodiment. For example, the amount of cooling air can be adjusted by adjusting the cross-sectional area of the left auxiliary ventilation paths 81a and 81b, and this is the same for the right auxiliary ventilation paths 82a and 82b.

  In the main ventilation path 80, the cooling air is diverted toward each of a portion located on the outer peripheral side and a portion located on the inner peripheral side of the heating coil 13 supported by the protruding portion 171c of the coil support 17c. Two right auxiliary ventilation paths 82a are provided. For this reason, even in the case where the heat generation amount is different between the outer peripheral portion and the inner peripheral portion of the heating coil 13, by providing a plurality of right auxiliary ventilation paths 82a and diverting the cooling air, appropriate cooling can be achieved. Easy to secure air volume. For example, the amount of cooling air can be adjusted by adjusting the cross-sectional area of the right auxiliary air passage 82a.

  A plurality of left connection ports 71a are provided in the left auxiliary ventilation path 81a, and the heating coil 11a supported by the protruding portion 171a of the coil support body 17a in the left auxiliary ventilation path 81a according to the distance from the blower 27. As a result, a sub-ventilation passage for dividing the cooling air was formed. For this reason, even if the pressure loss differs depending on the distance from the blower 27, it is easy to ensure an appropriate cooling air volume, and there is an effect of suppressing damage and deterioration due to heat generation of the heating coil 11.

  The high-permeability magnetic body 38 provided on the lower side of the heating coil 13 is outside the main body housing 2 when viewed from above, and the kitchen top is viewed from above when the main body housing 2 is inserted into the storage unit 203. It includes a first high magnetic permeability magnetic body 38a disposed at a position overlapping the plate 201, and a second high magnetic permeability magnetic body 38b disposed inside the main body housing 2 in a top view. The first high permeability magnetic body 38a is smaller in height and wider than the second high permeability magnetic body 38b. Since the lower side of the heating coil 13 disposed above the kitchen top plate 201 is covered with a large area by the first high permeability magnetic body 38a, the high-frequency magnetic flux from the heating coil 13 is applied to the coil support 17c and the kitchen top plate. It becomes difficult to pass through 201, and there is an effect of reducing damage and deterioration due to heat of the kitchen top plate 201.

  The first high permeability magnetic body 38a is disposed with a gap serving as a cooling duct between the heating coil 13 and the first high permeability magnetic body 38a between the lower surface of the first high permeability magnetic body 38a and the upper surface of the coil support 17c. An arc-shaped cooling duct 91 is provided. By providing the cooling duct in an arc shape, the inlet 91a can be provided at an arbitrary position in the circumferential direction of the lower surface of the coil support 17c. By providing the inlet 91a at a position away from the kitchen top plate 201, the height dimension of the protruding portion 171a of the coil support 17a disposed between the kitchen top plate 201 and the top plate 4 can be reduced. Thereby, the level | step difference of the top plate 4 and the kitchen top plate 201 can be made small, and there exists an effect which improves a user's cooking workability | operativity.

  The heating coil 13 includes a heating coil 11e and heating coils 11a to 11d arranged outside the heating coil 11e, and the heating coil 11a that is a part of the heating coils 11a to 11d is a coil support body 17a. The heating coil 11e and the heating coils 11a to 11d are individually driven and controlled, supported on the protruding portion 171a, and the winding of the heating coil 11a has a strand having a diameter of 0.2 mm or less. It can comprise with the stranded wire formed. By doing in this way, the height dimension of the heating coil 11a arrange | positioned in the position where the height dimension is restrict | limited on the protrusion part 171a of the coil support body 17a can be made low, and the top plate 4 and the kitchen top plate There is an effect that the level difference from 201 is reduced to improve the user's cooking workability.

  Further, the heating coil 11a is formed by winding an electric wire in which about 5 to 30 rectangular wires with a width of 0.05 mm to 0.2 mm and a height of 0.5 mm to 3 mm are bundled in the width direction. The height of the coil 11a may be 0.5 mm to 3 mm. By doing in this way, since the one rectangular wire forms the up-down direction of the heating coil 11a, the heat conductivity of an up-down direction becomes higher than the case where a twisted wire is used, and the upper surface and lower surface of the heating coil 11a Increases the cooling efficiency. Therefore, the cooling air volume of the heating coil 11a can be reduced, and the fan noise of the blower 27 can be reduced.

  A heating coil temperature detection device that detects the temperature of the portion of the heating coil 11 that is supported on the protruding portion 171a of the coil support 17a, and when the temperature detected by the heating coil temperature detection device reaches a threshold value, Heating by the heating coil 11a placed on the protrusion 171a is stopped or the thermal power is lowered. For this reason, for example, even if the cooling air is reduced due to a problem with the blower 27 or an increase in pressure loss due to dust or dirt in the left auxiliary ventilation path 81a, the temperature of the winding of the heating coil 11a rises. Damage to the heating coil 11a due to heat can be suppressed. Moreover, the influence of the heat to the kitchen top plate 201 grade | etc., Outside the induction heating cooking appliance 1 can be suppressed. Even if the heating of the heating coil 11a is stopped or the heating power is lowered, the heating power of the other heating coils 11b to 11e is maintained or increased by increasing the heating power, thereby reducing the heating power of the entire heating port 5a. It is difficult for the user to feel and cooking can be continued, so that the user's cooking workability can be ensured.

  The heating coil 11 has a heating coil 11e and a plurality of heating coils 11a to 11d arranged outside the heating coil 11e, and the heating coil 11a is supported on the protruding portion 171a of the coil support 17a. The heating coils 11b to 11d are supported on a portion of the coil support 17a excluding the projecting portion 171a, and the heating coils 11a and 11b to 11d are individually driven and controlled. The maximum output of a part of is lower than the maximum output of the heating coils 11b to 11d. For this reason, the heat generation of the heating coils 11a to 11d on the outer peripheral side is smaller than that of the heating coil 11e on the inner peripheral side. Therefore, it is possible to reduce the amount of cooling air necessary for the heating coil 11a disposed in a space limited space above the kitchen top plate 201, and the cooling performance can be maintained even as a compact and thin air guiding structure. In addition, there is an effect that the step between the top plate 4 and the kitchen top plate 201 is reduced to improve the workability of the user.

  The heating coil 11 has a heating coil 11e and a plurality of heating coils 11a to 11d arranged outside the heating coil 11e, and the heating coil 11a is supported on the protruding portion 171a of the coil support 17a. The heating coils 11b to 11d are supported on a portion of the coil support 17a excluding the projecting portion 171a, and the heating coils 11a and 11b to 11d are individually driven and controlled. Is lower than the maximum output of the heating coils 11b to 11d. For this reason, the heat generation of the heating coil 11a is smaller than that of the heating coils 11b to 11d. Therefore, it is possible to reduce the amount of cooling air necessary for the heating coil 11a disposed in a space limited space above the kitchen top plate 201, and the cooling performance can be maintained even as a compact and thin air guiding structure.

  A terminal block 36 of the heating coils 11, 13 that connects the heating coils 11, 13 and a driving unit that drives the heating coils 11, 13 is disposed inside the ventilation body 70 that forms the main ventilation path 80. For this reason, the connection to the terminal block 36 can be performed using the left connection port 71 and the right connection port 72 formed in the ventilation body 70, and there is no need to provide an opening for wiring. Therefore, there exists an effect which improves the assembly property and maintenance property of the induction heating cooking appliance 1. FIG. Moreover, since airtightness in the ventilation body 70 can be increased and cooling efficiency can be increased, and air loss is reduced and the air volume of the air blower 27 can be reduced, fan noise can be suppressed.

  Since the coil supports 17a and 17c are grounded, radiation noise from the heating coils 11 and 13 can be reduced. Therefore, it is possible to reduce electromagnetic noise countermeasures for the circuits constituting the driving means and the control means accommodated in the substrate case unit 24, and to reduce the manufacturing cost. In addition, malfunctions due to noise and the like can be suppressed, and obstacles to surrounding electronic devices and electrical devices due to noise can be suppressed.

  The ground connection portion 31 was provided on the coil support 17c, and the terminal block 36 for grounding the coil support 17c was disposed inside the ventilation body 70 forming the main ventilation path 80. Since the connection work to the terminal block 36 can be performed using the right connection port 72 formed in the ventilation body 70, it is not necessary to separately provide an opening in the ventilation body 70 through which wiring for connection is passed. Therefore, there exists an effect which improves the assembly property and maintenance property of the induction heating cooking appliance 1. FIG. Moreover, since airtightness in the ventilation body 70 can be increased and cooling efficiency can be increased, and air loss is reduced and the air volume of the air blower 27 can be reduced, fan noise can be suppressed.

  In addition, although the built-in type induction heating cooker 1 was illustrated in this Embodiment, the structure of this Embodiment 1, especially the structure which concerns on a cooling air path can also be applied to a desktop type induction heating cooker. . As described above, the cooling duct for cooling the heating coils 11a and 13 on the protrusions 171a and 171c and the structure related to the cooling air passage including the structure attached thereto are thinned. An induction heating cooker can be obtained.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIGS. 1, 2, 7, 8, and 17 to 29. Below, it demonstrates focusing on a different part from Embodiment 1. FIG.

  The configuration shown in FIGS. 1, 2, 7, and 8 is the same as that of the first embodiment.

  FIG. 17 is a perspective view in which the top plate 4, the top plate frame 3, and the vent cover 7 are removed in a state where the induction heating cooker 1 according to the second embodiment is installed in the kitchen cabinet 200. In the first embodiment, the flange portion 28 is provided at the upper edge of the left side and the right side of the main body casing 2, but in the second embodiment, the flange portion 28 is not provided, and the top plate opening portion is provided. A seal member 47 c is provided between 202 and the left and right side walls of the main body housing 2. As the seal member 47c, for example, a semi-independent semi-open bubble, a sponge that is a closed-cell foam or a foam of open-cell foam is used. By providing the sealing member 47c in the gap between the top plate opening 202 and the main body housing 2, the airtightness between the two is enhanced. If the cooling air flows into the kitchen cabinet 200, the food stored in the kitchen cabinet 200 may be deteriorated, but the top plate opening of the cooling air that cools the induction heating cooker 1 by the seal member 47c. Since the intrusion into 202 is suppressed, the deterioration in the kitchen cabinet 200 as described above can be suppressed. Moreover, the flow of the cooling air in the main body housing 2 is stable regardless of the type of the kitchen cabinet 200 and the installation state of the induction heating cooker 1, and a stable cooling effect can be obtained.

  FIG. 18 is a perspective view of the induction heating cooker 1 according to Embodiment 2 with the top plate 4, the top plate frame 3, the vent cover 7, the coil support 17 and its associated parts removed. A sealing member 47 d is provided at the upper end edges of the left connection port 71 and the right connection port 72 of the ventilation body 70. As the sealing member 47d, for example, a semi-independent semi-open bubble, a sponge that is a closed-cell foam or a foam of open-cell foam is used. The seal member 47d enhances airtightness between the left connection port 71 and the coil support body 17c disposed thereon, and between the right connection port 72 and the coil support body 17a disposed thereon. By doing in this way, it is effective in suppressing the leak at the time of supplying cooling air from the left connection port 71 and the right connection port 72 to the coil support bodies 17a and 17c, and improving cooling efficiency.

  The coil supports 17a and 17c are supported at three or more locations by the main body housing 2 via the elastic body 15, and the center of gravity of the coil supports 17a and 17c and the entire object supported by the coil supports 17a and 17c is supported at three locations. The configuration of being located inside the tied outline is the same as that of the first embodiment. As a result, the coil supports 17a and 17c have the same effects as those of the first embodiment.

  FIG. 19 shows that the top plate 4, the top plate frame 3, the vent cover 7, the coil support body 17 and its associated parts of the induction heating cooker 1 according to the second embodiment are removed and the ventilation body 70 is moved upward. FIG. FIG. 20 is a top view of the ventilation body 70 according to the second embodiment. In FIG.19 and FIG.20, the inside of the ventilation body 70 is shown partially transparently for description. In FIG. 20, the flow of the cooling air is conceptually indicated by arrows for the sake of explanation.

  On the upper surface on the left side of the ventilation body 70, left connection ports 71a, 71b, and 71c (these may be collectively referred to as the left connection port 71) are provided. The left connection port 71a is connected to the protrusion 171a of the coil support 17a. In the second embodiment, a plurality of left connections (six in the second embodiment) are provided in the depth direction of the main body housing 2. A mouth 71a is provided. The left connection port 71b opens below the heating coil 11e disposed on the center side of the heating coil 11 disposed on the main body housing 2. The left connection port 71c opens below the heating coils 11b to 11d disposed on the outer peripheral side of the heating coil 11 disposed on the main body housing 2, and the left connection port 71b has an arc shape (partial ring). Is open.

  As in the first embodiment, the main ventilation path 80 of the second embodiment provided in the ventilation body 70 includes a left auxiliary ventilation path 81 communicating with the left coil support body 17a and a right coil support body 17c. The left auxiliary ventilation path 81 and the right auxiliary ventilation path 82 are different in configuration.

  The left auxiliary ventilation path 81 is provided with a wall as a diversion unit that divides the interior into three air paths, and is divided into left auxiliary ventilation paths 81a, 81b, and 81c. The left auxiliary ventilation path 81a communicates with the left connection port 71a, the left auxiliary ventilation path 81b communicates with the left connection port 71b, and the left auxiliary ventilation path 81c communicates with the left connection port 71c. In the left auxiliary ventilation path 81c, a portion (C-shaped portion) disposed below the coil support 17c is higher than an upstream portion thereof, and is disposed above the left auxiliary ventilation path 81b. . That is, when viewed from above, the downstream portion of the left auxiliary ventilation path 81b and the downstream portion of the left auxiliary ventilation path 81c are arranged at overlapping positions.

  Although the cooling load varies depending on the arrangement of the heating coils 11a to 11e, a diversion means is provided in the left auxiliary ventilation path 81 as described above so that the air volume necessary for cooling the heating coils 11a to 11e can be obtained. By dividing the air path, it is possible to increase the cooling efficiency by suppressing the waste of cooling air and to reduce the noise of the blower 27.

  Regarding the heating coil 11a placed on the protrusion 171a of the coil support 17a, that is, the heating coil 11a placed on the kitchen top plate 201 when the induction heating cooker 1 is incorporated in the kitchen cabinet 200, A plurality of (six in the second embodiment) left connection ports 71a are provided to divert the cooling air and adjust the air volume necessary to cool each cooling region of the heating coil 11a. By doing in this way, it is effective in reducing the noise of the air blower 27 while reducing a useless cooling wind and improving cooling efficiency.

  Right connection ports 72 a and 72 b (these may be collectively referred to as the right connection port 72) are provided on the right side surface of the ventilation body 70. The right connection port 72a is for supplying cooling air to the coil protrusion 131 of the heating coil 13 mounted on the protrusion 171c of the coil support 17c. A plurality of right connection ports 72a (four in the second embodiment) are provided, and these are arranged along the depth direction. By providing a plurality of right connection ports 72a and diverting the cooling air into a plurality of air flows, the amount of air necessary for cooling each cooling region of the coil protrusion 131 of the heating coil 13 is adjusted. By doing in this way, it is effective in reducing the noise of the air blower 27 while reducing a useless cooling wind and improving cooling efficiency. The right connection port 72 b supplies cooling air to the heating coil 13 that is mainly placed on the main body housing 2.

  FIG. 21 is an exploded perspective view of the right coil support 17c and the components supported by the right coil support 17c according to the second embodiment as viewed from above. FIG. 22 is an exploded perspective view of the right coil support body 17c and the components supported by the right coil support body 17c according to the second embodiment as viewed from below. In FIG. 22, the flow of the cooling air is conceptually indicated by arrows. The heating coil 13 according to the present embodiment includes two coils, an annular heating coil 13a and an annular heating coil 13b arranged on the outer peripheral side of the heating coil 13a. Driving means such as an inverter for individually driving the heating coils 13a and 13b is provided, and the control means individually controls the output to drive the heating coils 13a and 13b. At this time, the control means suppresses electromagnetic noise by making the drive frequencies of the heating coils 13a and 13b the same.

  The central heating coil 13a and the outer peripheral heating coil 13b are individually driven and controlled. For example, by alternately changing the strength of these heating powers, convection of water or the like in the heated object is caused to occur. Since the water etc. in the inside can be stirred, the trouble of the user stirring the cooked food in the object to be heated is reduced. In addition, by changing whether or not the heating coil 13a on the center side and the heating coil 13b on the outer peripheral side are heated, the pot or frying pan, which is the object to be heated, is scorched compared to the case where a certain portion is heated by a certain heating coil. There is an effect to suppress.

  Inflow ports 55 to 58 are provided in the vicinity of the protruding portion 171c on the bottom surface of the coil support 17c. These inflow ports 55 to 58 are respectively connected to a plurality of right connection ports 72a of the ventilation body shown in FIGS. In the present embodiment, the right connection port 72a is formed in a tubular shape protruding upward, and the upper edge portion of the right connection port 72a is inserted into the inflow ports 55 to 58, so that the cooling air is highly airtight and the inflow port 55. To increase the cooling efficiency.

  In the partition member 18c, magnetic body holding portions 48c are opened radially, and rod-like high magnetic permeability magnetic bodies 38c are fitted into the magnetic body holding portions 48c. The high magnetic permeability magnetic bodies 38c are arranged at intervals from each other so as to divide the annular heating coil 13 in the circumferential direction. Cooling ducts 99 and 100 are provided between the high permeability magnetic bodies 38c on the lower surface of the partition member 18c located above the protruding portion 171c.

  On the bottom surface of the partition member 18c corresponding to the cooling ducts 99 and 100, a plurality of partition member outlets 65 to 68 for blowing cooling air upward from the partition member 18c are formed. The inlet 55 and the partition member outlet 65, the inlet 56 and the partition member outlet 66, the inlet 57 and the partition member outlet 67, and the inlet 58 and the partition member outlet 68 are communicated in a substantially airtight manner. The partition member outlets 65 to 68 blow out the cooling air blown from the inflow ports 55 to 58 upward, respectively.

  The cooling duct 99 from the inlet 55 to the partition member outlet 65 and the cooling duct 99 from the inlet 57 to the partition member outlet 67 have the same shape and are arranged symmetrically in the front-rear direction. The cooling duct 99 has a first duct 99 a provided on the outer peripheral side of the heating coil 13 and a second duct 99 b provided on the lower side of the heating coil 13. The second duct 99b is provided between the high permeability magnetic bodies 38 arranged radially on the lower surface of the partition member 18c, and communicates with the first duct 99a at the outer periphery. The height in the first duct 99a is higher than the height in the second duct 99b. That is, the upper surface of the first duct 99a protrudes above the upper surface of the second duct 99b. In this manner, the pressure loss is reduced by relatively increasing the height of the first duct 99a into which the cooling air from the inlets 55 and 57 first flows to increase the cross-sectional area of the flow path.

  Further, the height of the upper surface of the first duct 99a is arranged at a position lower than the lower end of the support outlet 22d when the partition member 18c is assembled to the coil support 17c. By doing so, while preventing the cooling air exhaust from the support outlet 22d from being hindered, the height dimension necessary for mounting the heating coil 13 is the same as in the case where the cooling duct 99 is not provided. There is an effect of reducing the height when the coil 13 is mounted.

  Further, the height of the second duct 99b is made lower than the height of the high magnetic permeability magnetic body 38, so that the mounting height can be lowered.

  The cooling air blown out from the inlets 55 and 57 above the coil support 17c flows in the circumferential direction in the first duct 99a of the cooling duct 99 and then flows into the second duct 99b as shown by an arrow 321 in FIG. Then, it blows upward from the plurality of partition member outlets 65 and 67. Since the partition member outlets 65 and 67 are provided under the heating coil 13, the cooling air is blown to the lower surface of the heating coil 13, and the effect of collision jet heat transfer is obtained, and the cooling efficiency of the heating coil 13 is increased. There is. A gap is provided between the heating coil 13 and the upper surface of the partition member 18c, and the cooling air blown from the partition member outlets 65 and 67 passes through the gap to cool the peripheral members.

  In addition, the inlets 55 and 57 and the partition member outlets 65 and 67 are connected via the cooling duct 99 including the arc-shaped first duct 99a, and the inlets 55 and 57 Since the partition member outlets 65 and 67 can be arranged, the degree of freedom of arrangement of the heating coil 13 can be increased. That is, as described above, in order to obtain the effect of the impinging jet heat transfer and increase the cooling efficiency, it is desirable that the partition member outlets 65 and 67 be arranged at positions overlapping the heating coil 13 as viewed from the upper surface. The inlets 55 and 57 for supplying cooling air to the member outlets 65 and 67 need to be provided on the main body housing 2. Since the inlets 55 and 57 and the partition member outlets 65 and 67 are connected by the cooling duct 99 including the arc-shaped first duct 99a as in the second embodiment, the partition member outlets 65 and 67 The degree of freedom of arrangement increases, and as a result, the degree of freedom of arrangement of the heating coil 13 to be cooled also increases. For example, when the entire heating coil 13 is disposed outside the main body housing 2 (upper side of the kitchen top plate 201), the cooking work space can be expanded to improve the workability of the user, and the cooling duct 99 is adopted. By doing so, the heating coil 13 can also be cooled. Further, the right connection port 72 for supplying the cooling air to the inlets 55 and 57 of the coil support 17c is disposed in the main body housing 2 and is not disposed on the kitchen top plate 201. The mounting of the member placed on 201 can be made thin. Thereby, the level | step difference of the kitchen top plate 201 and the upper surface of the top plate 4 becomes small, and there exists an effect which improves workability | operativity of a user's cooking.

  Further, the inner surface of the cooling duct 99 is composed of a coil support 17c, a partition member 18c, and a high magnetic permeability magnetic body 38, and these members are cooled by cooling air flowing in the cooling duct 99 and function by heat. Reduction and thermal degradation can be suppressed. Moreover, there exists an effect which reduces that the temperature of the surrounding components and the kitchen top plate 201 rises with the heat from these members.

  At the outer peripheral portion of the coil support 17c, more specifically, at the boundary position between the upper end of the outer periphery of the coil support 17c and the inner peripheral portion of the ring member 29, a support outlet 22d that is an opening through which air can flow is provided. Is provided. The support outlet 22d of the second embodiment is configured by an arc-shaped slit. Note that the support outlet 22d is not provided at the position where the supported portion 30 is provided. The support outlet 22d is provided so that at least a part thereof overlaps the range in which the heating coil 13 is projected in the horizontal direction on the outer peripheral side, and the outer periphery of the coil support 17c extends from the inside to the outside of the cooling air. It is designed not to obstruct the flow. By doing in this way, the cooling air in the coil support body 17c can be dispersed and exhausted to the outer peripheral side, the exhaust air speed can be reduced to reduce the pressure loss, and the load on the blower 27 can be reduced and reduced. Noise reduction is planned. Further, by exhausting the cooling air toward almost the entire outer periphery of the coil support 17c, the cooling air can flow relatively uniformly in the circumferential direction of the heating coil 13, and the non-uniformity of the cooling air is reduced. Has the effect of increasing the cooling efficiency.

  Since the support outlet 22d is provided on almost the entire outer periphery of the coil support 17c, the leakage of high-frequency magnetic flux can be increased as compared with the first embodiment, but in the second embodiment, the width of the ring member 29 is increased. It is wider than that described in the first embodiment. By doing in this way, the magnetic-shielding effect of the ring member 29 can be improved and the leakage magnetic flux to the upper direction of the top plate 4 can be suppressed.

  The cooling duct 100 extending from the inlet 56 to the partition member outlet 66 and the cooling duct 100 extending from the inlet 58 to the partition member outlet 68 have the same fan shape and are symmetrically arranged in the front and rear below the heating coil 13. The cooling duct 100 is provided between the high permeability magnetic bodies 39 arranged radially, and a wall extending downward from the lower surface of the partition member 18c is provided on the outer peripheral portion thereof. The cooling duct 100 is formed thinner than the height dimension of the high-permeability magnetic body 38, and the height dimension necessary for mounting the heating coil 13 is not increased compared to the case without the cooling duct 100. There exists an effect which makes induction heating cooking appliance 1 thin.

  The cooling air blown out from the inlets 56 and 58 to the upper side of the coil support 17c flows toward the outer side in the radial direction of the cooling duct 100 as indicated by an arrow 322 in FIG. 22, and upwards from the partition member outlets 66 and 68. Blow out. The inlets 56 and 58 that are the inlets of the cooling air to the cooling duct 100 and the partition member outlets 66 and 68 that are the outlets are arranged at positions that do not overlap in a top view. For this reason, the cooling duct 100 functions as a chamber for temporarily holding the cooling air, and can reduce the non-uniformity in the amount of cooling air flowing out from the plurality of partition member outlets 66 and 68 to enhance the cooling effect.

  In addition, since the partition member outlets 66 and 68 are provided below the heating coil 13, the cooling air is blown to the lower surface of the heating coil 13, and the effect of impinging jet heat transfer is obtained and the cooling efficiency of the heating coil 13 is increased. There is an effect to increase.

  Further, the inlets 56, 58 and the partition member outlets 66, 68 are connected via the cooling duct 100, and the inlets 56, 58 and the partition member outlets 66, 68 are arranged at positions where they do not overlap in a top view. I was able to place it. For this reason, since arrangement | positioning of the inflow ports 56 and 58 does not receive the restrictions of arrangement | positioning of the partition member blower outlets 66 and 68, the inflow ports 56 and 58 can be arrange | positioned above the main body housing | casing 2, and this The right connection port 72 to be connected can also be arranged in the main body housing 2. Since the right connection port 72 is not arranged on the kitchen top plate 201, the mounting of the member placed on the kitchen top plate 201 can be made thin. Thereby, the level | step difference of the kitchen top plate 201 and the upper surface of the top plate 4 becomes small, and there exists an effect which improves workability | operativity of a user's cooking.

  Further, the inner surface of the cooling duct 100 is composed of a coil support 17c, a partition member 18c, and a high magnetic permeability magnetic body 38, and these members are cooled by cooling air flowing in the cooling duct 100 and function by heat. Reduction and thermal degradation can be suppressed. Moreover, there exists an effect which reduces that the temperature of the surrounding components and the kitchen top plate 201 rises with the heat from these members.

  Also, a plurality of cooling ducts 99 and 100 (four cooling ducts in total in the second embodiment) are provided below the coil protrusion 131 of the heating coil 13, and an inlet and an outlet are arranged respectively. Therefore, it is possible to adjust the amount of cooling air suitable for each region of the heating coil 13 to be cooled. For this reason, useless cooling can be suppressed and uneven cooling can be reduced, and the cooling efficiency can be improved.

  Of the bottom surface of the coil support 17c, a plurality of inflow ports 21d are provided in a portion other than the protruding portion 171c. Cooling air supplied to the lower side of the coil support 17c from the right connection port 72b (see FIGS. 19 and 20) is blown upward from the inlet 21d, and the high permeability magnetic body 38 and the heating coil disposed on the upper side. 13. Particularly, the outer heating coil 13b is cooled. Since cooling air is blown to the lower surface of the heating coil 13, the cooling efficiency can be enhanced by the effect of heat transfer from the impinging jet. A cylindrical nozzle protruding upward may be provided on the outer periphery of the inflow port 21d. By doing so, the effect of heat transfer from the impinging jet to the lower surface of the heating coil 13 is enhanced.

  An inflow port 21e is provided at a substantially central position on the bottom surface of the coil support 17c but not at the protruding portion 171c. The inflow port 21e also serves as the magnetic body cooling hole 40 and has an opening larger than the outer shape of the high permeability magnetic body 38d disposed above itself. Cooling air flows upward through a gap generated by the difference between the outer shape of the high permeability magnetic body 38d and the outer shape of the inlet 21e (magnetic body cooling hole 40). The inlet 21e (magnetic body cooling hole 40) on the lower surface of the partition member 18c is formed with a frame penetrating up and down surrounding the outer periphery of the inlet 21e (magnetic body cooling hole 40), and this frame serves as a nozzle 42c. It is. Cooling air is blown from the nozzle 42 c to the lower surface of the heating coil 13, particularly the lower surface of the heating coil 13 a on the inner peripheral side, and the cooling efficiency of the heating coil 13 is enhanced by the effect of collision jet heat transfer.

  The air guide structure for cooling was made different between the inner heating coil 13a and the outer heating coil 13b. Thereby, the cooling effect according to each required cooling amount can be acquired, the cooling nonuniformity is reduced, and there is an effect of increasing the cooling efficiency.

  When looking at the heating coil 13b on the outer peripheral side, the coil protrusion 131 disposed on the outer side of the main body housing 2 (the upper side of the kitchen top plate 201) and the portion disposed on the main body housing 2, Different air guide structures for cooling. Thereby, the cooling effect according to each required cooling amount can be acquired, the cooling nonuniformity is reduced, and there is an effect of increasing the cooling efficiency.

  A heat insulating member 35 is provided on the lower surface of the coil support 17c. For the heat insulating member 35, a material having a lower thermal conductivity than that of the coil support 17c is used, and for example, a resin material plate or sheet, or a foamed material such as sponge is used. By including such a heat insulating member 35, there is an effect of suppressing heat leakage to components around the coil support 17c and the kitchen top plate 201.

  FIG. 23 is a partial cross-sectional view of the coil support 17c portion on the right side of induction heating cooker 1 and kitchen top plate 201 according to Embodiment 2. With reference to FIG. 23, the structure related to the cooling of the member placed on the protruding portion 171c of the coil support 17c, that is, on the kitchen top plate 201 will be mainly described. In FIG. 23, the flow of the cooling air is conceptually indicated by arrows.

  On the upper side of the kitchen top plate 201, a heat insulating member 35, a protruding portion 171c of the coil support 17c thereon, a cooling duct 99 thereon, a partition member 18c thereon, and a coil protruding portion 131 of the heating coil 13 thereon. The top plate 4 is disposed thereon. A gap corresponding to the height of the positioning member 16 is provided between the upper surface of the heating coil 13 and the top plate 4.

  As indicated by an arrow 331, the cooling air flowing through the right auxiliary ventilation path 82a in the ventilation body 70 blows upward from the right connection port 72a (not shown in FIG. 23) and flows onto the coil support body 17c. . As indicated by an arrow 332, a part of the cooling air passes through the cooling duct 99, and then exits the cooling duct 99 and is blown onto the lower surface of the coil protrusion 131 of the heating coil 13 to cool the heating coil 13. As indicated by an arrow 333, part of the cooling air that has exited the cooling duct 99 exits from the support outlet 22d to the outside of the coil support 17c, and is formed between the lower surface of the top plate 4 and the upper surface of the kitchen top plate 201. Flowing between.

  As indicated by an arrow 334, the cooling air flowing through the right auxiliary ventilation path 82b in the ventilation body 70 blows upward from the right connection port 72b and flows into the coil support body 17c from the inflow port 21d. As indicated by an arrow 335, the cooling air is blown to the lower surface of the heating coil 13 to cool the heating coil 13, and exits from the support outlet port 22d to the outside of the coil support 17c. As indicated by an arrow 336, the cooling air blows upward through the inlet 21e, and at that time, passes through the periphery of the high permeability magnetic body 38d to cool the high permeability magnetic body 38d, and then the heating coil. 13a is sprayed.

  FIG. 24 is an exploded perspective view of the left coil support body 17a and the components supported by the left coil support body 17a according to the second embodiment as viewed from above. FIG. 25 is an exploded perspective view of the coil support 17a on the left side, the partition member 18a, and the accessory parts of the partition member 18a according to Embodiment 2 as viewed from below.

  The heating coil 11 includes five heating coils 11a to 11e. The heating coils 11a to 11d are disposed on the outer periphery, and a double annular heating coil 11e is disposed on the inner peripheral side thereof. The driving means for driving these heating coils 11 are for the central heating coil 11e, for the heating coils 11b and 11d arranged at the front and rear, and for the heating coils 11a and 11c arranged at the left and right. A total of three are provided. That is, the heating coils 11a and 11c, the heating coils 11b and 11d, and the heating coil 11e are driven independently. By individually driving in this way, the heating power can be controlled according to the shape of the object to be heated, the temperature of the heating coil 11, and the like, as in the first embodiment.

  A plurality of filling holes 60 penetrating vertically are provided in the partition member 18a. The filling hole 60 is filled with an adhesive such as silicon for bonding the heating coil 13 and the high permeability magnetic body 39 to the partition member 18a. By comprising in this way, there exists an effect which improves the assembly property of the partition member 18a and the coil support body 17a, and makes a manufacturing cost low-cost. The partition member 18a and the coil support body 17a are fixed by a fastening member (not shown) such as a screw.

  A plurality of outlets 69 are provided on the upper surface of the partition member 18a. The blower outlet body 69 is provided with a blower outlet 69a provided on one end side so as to face the side surface of the heating coil 11, and has an inlet 69b communicated with the lower side of the partition member 18a on the other end side. A duct protruding above 18a is formed. The duct shape of the outlet body 69 of the present embodiment can be arbitrarily configured according to the object to be cooled and the installation position, and in the illustrated example, the blower has a substantially circular, semicircular, trapezoidal, or bowl shape in plan view. An outlet body 69 is provided. The upper side and the lower side of the partition member 18 a communicate with each other via the air outlet 69. The cooling air supplied to the lower side of the partition member 18a flows into the outlet body 69 from the inlet 69b, blows out from the outlet 69a, and collides with the side surface of the heating coil 13 arranged to face the outlet 69a. And cool it. By partially projecting the air outlet 69 on the side surface of the heating coil 11, the cooling air after cooling the heating coil 11 is smoothly exhausted to the coil support 17a with less obstruction and pressure loss is reduced. Thus, there is an effect of reducing the load on the blower 27 and reducing the noise.

  In addition, when the air outlet 69 is provided so as to be opposed to each other with the bundle of windings of the heating coil 11 interposed therebetween, in the operation of attaching the heating coil 11 to the partition member 18a, it functions as a positioning guide. . In the mounting operation of the heating coil 11, by disposing the heating coil 11 between the pair of outlet bodies 69, the heating coil 11 can be easily positioned and the workability of the assembly is improved. The induction heating cooker 1 having a stable heating performance with less variation can be obtained, and the quality is stabilized.

  High permeability magnetic bodies 39c and 39d are disposed below the heating coil 11, more specifically below the partition member 18a. A rod-like high magnetic permeability magnetic body 39d is radially arranged below the central heating coil 11e, and a high magnetic permeability magnetic body 39c is arranged below each of the outer heating coils 11a to 11d. ing.

  The high magnetic permeability magnetic body 39c has an outer shape larger than each of the heating coils 11a to 11d, and the high magnetic permeability magnetic body 39c includes the heating coils 11a to 11d in a top view. The outer shape of the high magnetic permeability magnetic body 39c is preferably substantially similar to the outer shape of the heating coils 11a to 11d as illustrated in FIG. It is not limited to. Since the high magnetic permeability magnetic body 39c has a shape including each of the heating coils 11a to 11d, it is possible to obtain a desired magnetic-shielding function while keeping the height dimension of the high magnetic permeability magnetic body 39c relatively low. For this reason, even when the outer peripheral heating coils 11a to 11d (heating coil 11a in the present embodiment) are arranged on the kitchen top plate 201, the mounting dimensions can be further reduced. Therefore, the height dimension of the top plate frame 3 can be reduced, and when the induction heating cooker 1 is incorporated in the kitchen cabinet 200, the level difference between the kitchen top plate 201 and the top plate frame 3 can be reduced. It has the effect of improving the workability of cooking.

  Each high permeability magnetic body 39c is divided into three in the circumferential direction and two in the radial direction. A gap is provided between the divided portions of the high permeability magnetic body 39c, and this gap constitutes a part of the inner surface of the cooling ducts 103 to 105 described later. By doing so, the cooling air passes in the vicinity of the high permeability magnetic body 39c, and the high permeability magnetic body 39c itself is cooled.

  On the lower surface of the partition member 18a, a magnetic body holding portion 49c made of a locking piece extending downward and formed along the outer shape of the high permeability magnetic body 39c is formed. The high permeability magnetic body 39c is fitted between the opposing magnetic body holding portions 49c, and the high permeability magnetic body 39c is held by the partition member 18a. Further, on the lower surface of the partition member 18a, a frame-shaped magnetic body holding portion 49d extending along the outer shape of the high permeability magnetic body 39d is formed. The high magnetic permeability magnetic bodies 39c and 39d are positioned by the magnetic body holding portions 49c and 49d and attached at predetermined positions. When the partition member 18a is attached to the coil support body 17a, between the coil support body 17a and the partition member 18a, frame-shaped magnetic body holding portions 49c and 49d, high permeability magnetic bodies 39c and 39d, and a coil A plurality of cooling ducts are formed by the support 17c. This cooling duct serves as a supply path for cooling air supplied to the heating coil 11, and the components forming the cooling duct itself are cooled by the cooling air passing through the cooling duct.

  A support outlet 22d is provided at the outer peripheral portion of the coil support 17a, more specifically, at the boundary position between the upper end of the outer periphery of the coil support 17a and the inner peripheral portion of the ring member 29. The basic configuration and operational effects of the support outlet 22d are the same as those described for the support outlet 22d provided in the coil support 17c of the second embodiment.

  The coil support 17a is provided with a plurality of inflow ports 21f below the central heating coil 11e. The inflow port 21f is a circular opening, and a plurality of inflow ports 21f are arranged in a double annular shape substantially along the shape of the heating coil 11e on the center side. The inflow port 21f communicates with a left auxiliary ventilation path 81b (see FIGS. 19 and 20) formed in the ventilation body 70, and a lower surface of the heating coil 11e facing the cooling air supplied from the left auxiliary ventilation path 81b. The cooling efficiency is increased by impinging jet heat transfer. By providing the inlet 21f in the coil support 17a, there is an effect that the heating coil 11e can be mounted thinly and compactly.

  The coil support 17a is provided with a plurality of inlets 21g below the outer peripheral heating coils 11a to 11d. The inflow port 21g communicates with the left auxiliary ventilation path 81c below the coil support body 17a and communicates with the outlet body 69 of the partition member 18a above. A cooling duct is formed by the inflow port 21g and the outlet body 69 communicating therewith.

  A blower outlet 85 that supplies cooling air to a portion of the coil support 17a placed on the main body housing 2 and adjacent to the protrusion 171a and above the protrusion 171a of the coil support 17a. , 86, 87 are provided.

  In the coil support 17a, the height of the lower part of the outer peripheral heating coils 11a to 11d is smaller than the height of the lower part of the central heating coil 11e. That is, the coil support body 17a has a shape in which a central portion (portion located below the heating coil 11e) is recessed downward. Even when the outer peripheral heating coils 11a to 11d are arranged on the kitchen top plate 201, the mounting dimensions can be further reduced by relatively reducing the height of the outer peripheral portion of the coil support 17a. . Therefore, the height dimension of the top plate frame 3 can be reduced, and when the induction heating cooker 1 is incorporated in the kitchen cabinet 200, the level difference between the kitchen top plate 201 and the top plate frame 3 can be reduced. It has the effect of improving the workability of cooking.

  A heat insulating member 35 similar to that provided in the coil support 17c of the second embodiment is provided on the lower surface of the coil support 17c, and the same effects are obtained.

  FIG. 26 is a bottom view of the left coil support 17a and its accessory parts according to the second embodiment. FIG. 27 is a bottom cross-sectional view of the high permeability magnetic body 39 portion of the left coil support body 17a and its accessory parts according to the second embodiment. First, a description will be given focusing on the positional relationship between the inlets 21g and 21h and the outlet body 69. A plurality of inflow ports 21g are provided in a portion of the coil support body 17a excluding the projecting portion 171a, and in the inflow ports 21g, there are provided an air outlet body 69 provided above. There are things that are not. As shown in FIGS. 26 and 27, the inlet 21g is not provided below the outlet body 69 provided on the front side (upper side in the drawing). On the other hand, an inflow port 21g is provided below the outlet body 69 provided on the back side (the lower side in the drawing). That is, the inlet 21g is not provided at a position overlapping the air outlet 69 on the front side of the coil support 17a in a top view, and the air outlet 21g is not provided at a position overlapping the air outlet 69 on the back in a top view. An inlet 21g is provided. The front outlet 69 communicates with the downstream portion of the left auxiliary ventilation passage 81c (FIGS. 19 and 20), and the downstream portion of the left auxiliary ventilation passage 81c is disposed on the left auxiliary ventilation passage 81b. Therefore, the height of the left auxiliary ventilation path 81c is limited and is lowered. Further, the cooling air flowing in the left auxiliary ventilation path 81c is divided on the downstream side located below the coil support body 17c (see FIG. 20), and the position where the front outlet 69 is disposed. Since the cooling air is an end portion after the branching, the cooling air hardly flows into the front outlet 69. For this reason, by providing the inlet 21g at a position overlapping the front outlet body 69 in the top view, the inflow of the cooling air to the outlet body 69 is promoted and the heating coil 11 is cooled. Thereby, the thermal damage and deterioration of the heating coil 11 are suppressed.

  An inflow port 21h is provided below the air outlet 69 disposed above the gap between the high magnetic permeability magnetic bodies 39c so as to overlap the air outlet 69 when viewed from above. The inflow port 21h is provided with a gap between the divided portions of the high permeability magnetic body 39c, and this gap functions as a cooling duct, but the cross-sectional area of the cooling duct is relatively small, Cooling air does not easily flow into the air outlet 69. For this reason, by providing the inlet 21h on the lower side of the outlet body 69 disposed above the gap between the high magnetic permeability magnetic bodies 39c so as to overlap in the top view, the outlet body 69 for cooling air is provided. The heating coil 11 is cooled. Thereby, the thermal damage and deterioration of the heating coil 11 are suppressed.

  The air guide structure that cools the heating coil 11e on the center side blows cooling air from the inlet 21f provided on the coil support 17a to the lower surface of the heating coil 11e, whereas the heating coils 11a on the outer peripheral side. The air guide structure for cooling 11d is to blow the cooling space to the side surfaces of the heating coils 11a to 11d through the inlet 21h provided in the coil support 17a and the outlet 69 of the partition member 18a. Thus, by adopting a different air guide structure, the cooling air volume is adjusted according to the respective required cooling volume between the heating coil 11e on the center side and the heating coils 11a to 11d on the outer peripheral side. By doing in this way, there exists an effect which reduces a useless cooling wind and improves cooling efficiency.

  Next, the air guide structure to the heating coil 11a placed on the protruding portion 171a of the coil support 17a, that is, the heating coil 11a placed on the kitchen top plate 201 will be described. Inflow ports 75 to 77 are provided in the vicinity of the protrusion 171a on the bottom surface of the coil support 17a. A pair of these inlets 75 to 77 are provided on the coil support 17a symmetrically in the front-rear direction. The partition member 18a is provided with air outlets 85 to 87 on the upper side of the protruding portion 171a.

  Between the protruding portion 171a of the coil support 17a and the partition member 18a, the cooling duct 103 that connects the inlet 75 and the outlet 85, the cooling duct 104 that connects the inlet 76 and the outlet 86, and the inlet 77 A cooling duct 105 that connects the air outlet 87 and the air outlet 87 is provided.

  The cooling duct 103 forms a cooling air flow path on the outer peripheral side of the heating coil 11a, and the cooling air blown upward from the inlet 75 passes along the outer peripheral side of the heating coil 11a along the side wall of the coil support 17a. And flows upward from the outlet 85 formed in the outer peripheral portion of the partition member 18a to cool the heating coil 11a. In the second embodiment, a plurality of outlets 85 are arranged at predetermined positions so as to blow cooling air to the outer peripheral portion, inner peripheral side surface, and lower surface of the heating coil 11a.

  The cooling duct 104 forms a cooling air flow path so as to connect the outer peripheral side of the heating coil 11a and the substantially arc-shaped gap between the high permeability magnetic bodies 39c divided in the radial direction. The cooling air blown upward from the inlet 76 flows on the outer peripheral side of the heating coil 11a toward the outer peripheral side of the coil support 17a, passes through the gap between the substantially arc-shaped high permeability magnetic bodies 39c, and passes through the outlet 86. It goes out and cools the heating coil 11a. In the second embodiment, a plurality of air outlets 86 are arranged at predetermined positions so as to blow cooling air to the outer peripheral portion, the inner peripheral side surface, and the lower surface of the heating coil 11a.

  The cooling duct 105 is provided radially along the radial direction of the coil support 17a so as to connect the outer peripheral side of the heating coil 11a and the radially high magnetic permeability magnetic body 39d. Cooling air blown upward from an inlet 77 provided near the center of the coil support 17a flows radially outward through the cooling duct 105, exits upward from the outlet 87, and is heated by the heating coil 11a. Cool down. In the second embodiment, a plurality of air outlets 87 are arranged at predetermined positions so as to blow cooling air to the outer peripheral portion, the inner peripheral side surface, and the lower surface of the heating coil 11a.

  As described above, the plurality of cooling ducts 103 to 105 are provided and the amount of cooling air necessary for each region of the heating coil 11a is adjusted, so that each region of the heating coil 11a is cooled without excess or deficiency to increase the cooling efficiency. Moreover, the height dimension of each cooling duct 103-105 is set as the substantially same height as the high magnetic permeability magnetic body 39c, and is arrange | positioned in parallel with the high magnetic permeability magnetic body 39c in horizontal view. Since the height dimension is not increased even when the cooling ducts 103 to 105 are mounted in this way, the heating coil 11 can be mounted with a minimum height dimension. Therefore, the height dimension of the top plate frame 3 can be reduced, and when the induction heating cooker 1 is incorporated in the kitchen cabinet 200, the level difference between the kitchen top plate 201 and the top plate frame 3 can be reduced. It has the effect of improving the workability of cooking.

  FIG. 28 is a partial cross-sectional view of the left coil support body 17a according to the second embodiment. With reference to FIG. 12, it demonstrates focusing on the structure which concerns on the cooling of the member mounted on the protrusion part 171a of the coil support body 17a, ie, the kitchen top plate 201. FIG. In FIG. 28, the flow of the cooling air is conceptually indicated by arrows.

  On the upper side of the kitchen top plate 201, a heat insulating member 35 is disposed with a predetermined height gap, a protrusion 171 a of the coil support 17 a thereon, the cooling ducts 103, 104 thereon, and The partition member 18a, the protrusion 131a of the heating coil 13 thereon, and the top plate 4 are arranged thereon.

  As indicated by arrows 341 and 342, the cooling air flowing through the left auxiliary ventilation path 81 a in the ventilation body 70 blows upward from the left connection port 71 a, flows into the cooling ducts 103 and 104, and flows from the outlet body 69. The heating coil 11 is cooled by colliding with the heating coil 13. As indicated by an arrow 343, a part of the cooling air that has exited the cooling ducts 103 and 104 and the cooling duct 105 (not shown in FIG. 28, see FIG. 27) is supplied to the coil support 17a from the support outlet 22d. And flows between the lower surface of the top plate 4 and the upper surface of the kitchen top plate 201.

  As indicated by an arrow 344, the cooling air flowing through the left auxiliary ventilation path 81b in the ventilation body 70 blows upward from the left connection port 71b, passes through the blowout port formed in the partition member 18a, and is heated on the center side. The heating coil 11e is cooled by blowing toward 11e. As indicated by the arrow 345, the cooling air flowing through the left auxiliary ventilation path 81c in the ventilation body 70 can be blown upward from the left connection port 71c, passes through the outlet body 69 formed in the partition member 18a, and is heated. The heating coils 11b to 11d are cooled by blowing toward 11b to 11d. Thereafter, as indicated by an arrow 346, the cooling air exits from the support outlet 22d to the outside of the coil support 17a and flows between the lower surface of the top plate 4 and the upper surface of the kitchen top plate 201.

  FIG. 29 is a top cross-sectional view of the top plate frame 3 portion in a state where the induction heating cooker 1 according to Embodiment 2 is installed in the kitchen cabinet 200. In FIG. 29, for the sake of explanation, the flow of the cooling air is conceptually indicated by arrows.

  A part of the cooling air blown out from the substrate case unit 24 (not shown in FIG. 29, see FIG. 5) passes through the right auxiliary ventilation path 82 provided in the ventilation body 70 to the right coil support body 17c. Supplied. The cooling air supplied to the coil support 17c cools the coil support 17c and the components supported by the coil support 17c, and goes out of the coil support 17c through the support outlet 22d. A part of the cooling air blown out from the substrate case unit 24 is supplied to the left coil support body 17a through the left auxiliary ventilation paths 81a to 81c provided in the ventilation body 70. The cooling air supplied to the coil support body 17a cools the coil support body 17a and the parts supported by the coil support body 17a, and goes out of the coil support body 17a through the support body outlet 22d.

  In the second embodiment, an arcuate support outlet 22d is formed at the upper end edge of the coil supports 17a and 17c, and the cooling air is blown out radially outward from the outer periphery of the coil supports 17a and 17c. . The cooling air blown out from the support outlet 22d provided on the protrusion 171a of the coil support 17a extends between the upper surface of the kitchen top plate 201 and the lower surface of the top plate 4 along the outer periphery of the coil support 17a. And flows inside the main body housing 2. In the second embodiment, the flange portion 28 provided in the first embodiment is removed from the upper end edge of the main body housing 2, so that the left and right coil supports 17 a and 17 c are sent onto the kitchen top plate 201. The pressure loss of the cooling air to the exhaust air passage 23 is reduced, and the cooling efficiency is improved.

  The partition member 18a includes a blower outlet body 69 as a nozzle part that blows cooling air to the heating coil 13 disposed above the partition member 18a. The upper surface of the partition member 18a is arranged at the same height or lower position as the lower surface of the heating coil 13, and the air outlet 69a formed in the air outlet body 69 is opposed to the side surface of the heating coil 11, thereby The cooling air can flow smoothly toward the heating coil 11, pressure loss can be reduced, the efficiency of the blower 27 can be increased, and noise can be reduced. In addition, since the air having a high temperature after cooling is stagnated and does not stay, there is an effect of increasing the cooling efficiency.

  The coil support body 17a is provided with the inflow port 21g below the air outlet body 69, so that the flow of cooling air into the air outlet body 69 is smooth, and the amount of cooling air from the air outlet body 69 is reduced. It increases, and it can be set as a suitable cooling capacity, and there exists an effect which improves cooling efficiency.

  A support outlet 22d capable of ventilating is formed on at least a part of the side walls of the coil supports 17a and 17c facing the outer peripheral side surfaces of the heating coils 11 and 13. For this reason, the pressure loss can be reduced, and the cooling air flows relatively uniformly to the outer peripheral side of the coil supports 17a and 17c, so that the cooling unevenness of the heating coils 11 and 13 is reduced and the cooling efficiency is increased. effective.

  As an airtight member disposed below the coil support body 17a and disposed between the ventilation body 70 forming the main ventilation path 80 and the outer periphery of the inlet formed in the ventilation body 70 and the coil support body 17a. And a sealing member 47d. For this reason, the leakage of the cooling air is suppressed, and there is an effect that the load of the blower 27 is reduced, the noise is reduced, and the cooling efficiency is increased.

  A heating coil 13a and a heating coil 13b provided on the outer peripheral side of the heating coil 13a were provided, and an air guide structure for guiding cooling air to each of the heating coil 13a and the heating coil 13b was formed. For this reason, when the cooling load is different between the heating coil 13a on the inner peripheral side and the heating coil 13b on the outer peripheral side, an appropriate amount of cooling air can be obtained by adjusting the respective air guide structures. Therefore, unnecessary cooling air is not required, and the load on the air blower 27 is reduced, thereby reducing the noise.

  The height dimensions of the protrusions 171a and 171c of the coil supports 17a and 17c were made smaller than the height dimensions of the portions other than the protrusions 171a and 171c of the coil supports 17a and 17c. By thinning the protrusions 171a and 171c arranged on the kitchen top plate 201, the step between the kitchen top plate 201 and the top plate 4 can be reduced, and there is an effect of improving the workability of cooking.

  DESCRIPTION OF SYMBOLS 1 Induction heating cooker, 2 Main body housing, 3 Top plate frame, 4 Top plate, 5 Heating port, 5a Heating port, 5b Heating port, 5c Heating port, 6 Operation part, 7 Air vent cover, 8 Housing intake Port, 9 housing exhaust port, 10 display unit, 11 heating coil, 11a heating coil, 11b heating coil, 11c heating coil, 11d heating coil, 11e heating coil, 12 heating coil, 13 heating coil, 13B metal plate, 13a heating Coil, 13b Heating coil, 14 Cooking chamber, 15 Elastic body, 16 Positioning member, 17 Coil support, 17a Coil support, 17b Coil support, 17c Coil support, 18 Partition member, 18a Partition member, 18c Partition member , 20 Electrical components, 21 Inlet, 21a Inlet, 21b Inlet, 21d Inlet, 21e Inlet 21f Inlet, 21g Inlet, 21h Inlet, 22 Heat sink, 22a Support outlet, 22c Support outlet, 22d Support outlet, 23 Exhaust air passage, 24 Substrate case unit, 25 Inlet, 26a Front exhaust port, 26b Rear exhaust port, 27 Blower, 28 Flange part, 29 Ring member, 30 Supported part, 31 Ground connection part, 32 Ground wire, 33 Elastic body support part, 34 Fin, 35 Thermal insulation member, 36 Terminal block, 37 elastic body holding portion, 38 high permeability magnetic body, 38a first high permeability magnetic body, 38b second high permeability magnetic body, 38c high permeability magnetic body, 38d high permeability magnetic body, 39 high Magnetic permeability magnetic material, 39a High magnetic permeability magnetic material, 39b High magnetic permeability magnetic material, 39c High magnetic permeability magnetic material, 39d High magnetic permeability magnetic material, 40 Magnetic material cooling hole, 41 Infrared Sensor window, 41a Infrared sensor shield, 42a nozzle, 42b nozzle, 42c nozzle, 43 Infrared sensor unit, 44 thermistor unit, 45 thermistor shield, 46 chamber, 47a seal member, 47b seal member, 47c seal member, 47d seal Member, 48a magnetic body holding part, 48b magnetic body holding part, 48c magnetic body holding part, 49a magnetic body holding part, 49b magnetic body holding part, 49c magnetic body holding part, 49d magnetic body holding part, 50 inlet, 51 flow Inlet, 52 Inlet, 53 Inlet, 54 Inlet, 55 Inlet, 56 Inlet, 57 Inlet, 58 Inlet, 59 Magnetic shield, 60 Filling hole, 61 Partition member outlet, 62 Partition member outlet, 63 partition member outlet, 64 partition member outlet, 65 partition member outlet, 66 partition Member outlet, 67 partition member outlet, 68 partition member outlet, 69 outlet body, 69a outlet, 69b inlet, 70 ventilator, 71 left connection port, 71a left connection port, 71b left connection port, 71c left connection 72, right connection port, 72a right connection port, 72b right connection port, 75 inlet, 76 inlet, 77 inlet, 80 main ventilation path, 81 left auxiliary ventilation path, 81a left auxiliary ventilation path, 81b left auxiliary ventilation Road, 81c Left auxiliary ventilation path, 82 Right auxiliary ventilation path, 82a Right auxiliary ventilation path, 82b Right auxiliary ventilation path, 85 air outlet, 86 air outlet, 87 air outlet, 91 cooling duct, 91a air inlet, 92 cooling duct, 92a Inlet, 92b Outlet, 92c Partition member outlet, 93 Cooling duct, 94 Cooling duct, 95 Cooling duct, 96 Cooling duct, 97 Cooling duct, 98 Cooling duct, 9 Cooling duct, 99a First duct, 99b Second duct, 100 Cooling duct, 102 Heating coil, 103 Cooling duct, 104 Cooling duct, 105 Cooling duct, 131 Coil projection, 131a Projection, 171a Projection, 171c Projection, 200 kitchen cabinet, 201 kitchen top plate, 202 top plate opening, 203 storage, 204 front opening, 401 gap, 481a side wall, 482a support frame.

Claims (38)

The main body housing,
A top plate provided on the main body housing;
A heating coil for inductively heating an object to be heated placed on the top plate portion;
A coil support that is formed with an air inlet and supports the heating coil from below;
A partition member disposed between the coil support and the heating coil supported by the coil support,
The coil support has a protrusion that supports a part of the heating coil;
The partition member has a side wall having a curvature substantially the same as the outer periphery of the heating coil disposed above the heating coil placed on the projecting portion of the coil support. ,
A gap serving as a cooling duct is formed between the upper surface of the partition member and the lower surface of the heating coil. The partition member has a side wall provided outside the outer periphery of the heating coil disposed above the partition member,
Between the side wall of the partition member and the outer periphery of the heating coil, a gap serving as a cooling duct is formed,
The induction heating cooker according to claim 1, wherein a partition member outlet is formed on a side wall of the partition member at a position facing the outer periphery of the heating coil. The induction heating cooker according to claim 1 or 2, wherein the partition member includes a nozzle portion that blows cooling air to the heating coil disposed above the partition member. The induction heating cooker according to claim 3, wherein the nozzle part is disposed above the inlet provided in the coil support. The main body casing is inserted into the storage part of the kitchen cabinet through the top plate opening of the kitchen top board provided on the upper surface of the kitchen cabinet.
The coil support is arranged so that a gap is formed between the kitchen top plate and the lower surface of the protruding portion of the coil support in a state where the main body casing is inserted into the storage unit. The induction heating cooker according to any one of claims 1 to 4, wherein The induction heating cooker according to claim 5, wherein a heat insulating member is provided in the gap. The coil support includes three or more supported parts supported by the main body casing,
7. The center of gravity of the coil support in a state where the heating coil is supported is located inside an outline that connects the three or more supported parts. 8. The induction heating cooker described. The induction heating cooker according to any one of claims 1 to 7, wherein the inlet of the coil support body is disposed at a position overlapping the main body housing in a top view. The opening part which can ventilate is formed in at least one part of the side wall of the said coil support body facing the outer peripheral side surface of the said heating coil. The claim 1 characterized by the above-mentioned. The induction heating cooker described. The coil support is made of a nonmagnetic metal,
The said partition member is formed with the raw material provided with electrical insulation. The induction heating cooking appliance as described in any one of Claims 1-9 characterized by the above-mentioned. A blower;
The induction heating cooking as described in any one of Claims 1-10 provided with the main ventilation path which guides the cooling air sent from the said air blower to the said inflow port of the said coil support body. vessel. A plurality of the heating coils are provided;
The induction heating cooker according to claim 11, wherein a sub-air passage is formed in the main air passage to divert cooling air toward the plurality of heating coils. The heating coil has a plurality of sub-heating coils,
The induction heating cooker according to claim 11, wherein a plurality of sub ventilation paths are formed in the main ventilation path to divert the cooling air toward the plurality of sub heating coils. In the main ventilation path, there are formed a plurality of sub ventilation paths for diverting the cooling air toward each of the protruding portion of the coil support and the portion of the coil support excluding the protruding portion. The induction heating cooker according to claim 11. In the main ventilation path, a sub-flow for diverting cooling air toward each of a portion located on the outer peripheral side and a portion located on the inner peripheral side of the heating coil supported by the projecting portion of the coil support body. The induction heating cooker according to claim 11, wherein a ventilation path is formed. In the main ventilation path, an auxiliary ventilation path is formed that diverts the cooling air to the heating coil supported by the protrusion of the coil support according to the distance from the blower. The induction heating cooker according to claim 11. A high permeability magnetic body provided inside the coil support and below the heating coil;
The at least one part of the outer peripheral surface of the said high magnetic permeability magnetic body comprises a part of wall surface of the cooling duct which guide | induces cooling air to the said heating coil. The induction heating cooker according to one item. The main body casing is inserted into the storage part of the kitchen cabinet through the top plate opening of the kitchen top board provided on the upper surface of the kitchen cabinet.
The high permeability magnetic body is:
A first high magnetic permeability magnetic body disposed outside the main body housing in a top view and disposed in a position overlapping the kitchen top plate in a top view in a state where the main body housing is inserted into the storage unit;
Including a second high permeability magnetic body disposed inside the main body housing in a top view,
The induction heating cooker according to claim 17, wherein the first high permeability magnetic body is smaller in height and wider than the second high permeability magnetic body. The high magnetic permeability magnetic body is disposed with a gap serving as a cooling duct between the heating coil and the heating coil.
The induction heating cooker according to claim 17 or 18, wherein an arc-shaped cooling duct is provided between a lower surface of the high magnetic permeability magnetic body and an upper surface of the coil support. The induction heating cooker according to any one of claims 17 to 19, wherein the high magnetic permeability magnetic body is disposed with a gap between the coil support body and the coil support body. In the coil support body, a through hole is formed at a position where the heating coil supported by the coil support body and the high permeability magnetic body face each other.
The induction heating cooker according to any one of claims 17 to 20, wherein the high magnetic permeability magnetic body is held by an adhesive filled in the through hole. It has a magnetic shield made of non-magnetic metal,
The magnetic shield plate is
The flat plate shape that is provided on the outer peripheral side of the heating coil and at a height position between the bottom surface of the heating coil and the bottom surface of the top plate portion, and is substantially parallel to the top plate portion. The induction heating cooker according to any one of claims 1 to 21. The induction heating cooker according to claim 22, wherein the magnetic shielding plate is formed integrally with the coil support. A contact member provided on the top surface of the magnetic shield plate and in contact with the bottom surface of the top plate portion;
The induction heating cooker according to claim 22 or 23, further comprising: an elastic body that is provided on a lower surface of the magnetic shield plate facing the contact member and supports the magnetic shield plate from below. A main ventilation path forming member disposed below the coil support and forming the main ventilation path;
The airtight member arrange | positioned between the said main ventilation path formation member and the outer peripheral part of the said inflow port formed in the said coil support body was provided. Any one of Claims 11-16 characterized by the above-mentioned. The induction heating cooker according to item. The induction heating cooker according to any one of claims 1 to 25, wherein a temperature detection device is sandwiched between an upper surface of the coil support and a lower surface of the partition member. The infrared sensor which detects the infrared energy from the to-be-heated object arrange | positioned at the lower surface of the said coil support body, and is mounted on the said top-plate part is provided. An induction heating cooker according to claim 1. The induction heating cooker according to claim 27, further comprising a cylindrical body provided on an upper surface of the coil support body and above the infrared sensor along an outer periphery of a light receiving portion of the infrared sensor. A heating coil temperature detecting device for detecting a temperature of a portion of the heating coil supported on the protruding portion of the coil support;
The heating by the heating coil supported by the protrusion is stopped or the thermal power is lowered when the temperature detected by the heating coil temperature detection device reaches a threshold value. The induction heating cooking appliance as described in any one of 28. The heating coil has a first sub-heating coil, and a second sub-heating coil disposed outside the first sub-heating coil,
At least a part of the second sub-heating coil is supported on the protrusion of the coil support,
The first sub-heating coil and the second sub-heating coil are individually driven and controlled,
The winding of the second sub-heating coil is composed of a stranded wire formed with a strand having a diameter of 0.2 mm or less. The induction heating cooker according to item. The main body casing is inserted into the storage part of the kitchen cabinet through the top plate opening of the kitchen top board provided on the upper surface of the kitchen cabinet.
The heating coil has a first sub-heating coil, and a second sub-heating coil disposed outside the first sub-heating coil,
At least a part of the second sub-heating coil is at a position that does not overlap with the main body casing when viewed from above, and overlaps the kitchen top plate when viewed from above when the main body casing is inserted into the storage unit. Placed in position,
The first sub-heating coil and the second sub-heating coil are individually driven and controlled,
The second sub-heating coil is formed by winding an electric wire in which about 5 to 30 sheets of insulation-coated rectangular wires having a width of 0.05 mm to 0.2 mm and a height of 0.5 mm to 3 mm are bundled in the width direction. The induction heating cooker according to any one of claims 1 to 12, wherein a height dimension is 0.5 mm to 3 mm. The heating coil has a first sub-heating coil, and a second sub-heating coil disposed outside the first sub-heating coil,
At least a part of the second sub-heating coil is supported on the protrusion of the coil support,
The first sub-heating coil and the second sub-heating coil are individually driven and controlled,
When the temperature of the second sub-heating coil reaches a threshold value, the heating by the second sub-heating coil is stopped or the heating power is reduced, and the heating power of the heating by the first sub-heating coil is maintained or It is increased. The induction heating cooking appliance as described in any one of Claims 1-12 characterized by the above-mentioned. The heating coil has a first sub-heating coil, and a second sub-heating coil disposed outside the first sub-heating coil,
At least a part of the second sub-heating coil is supported on the protrusion of the coil support,
The first sub-heating coil and the second sub-heating coil are individually driven and controlled,
The induction heating cooker according to any one of claims 1 to 12, wherein a maximum output of the second sub-heating coil is lower than a maximum output of the first sub-heating coil. The heating coil has a first sub-heating coil and a plurality of second sub-heating coils arranged outside the first sub-heating coil,
A part of the second sub-heating coil is supported on the protrusion of the coil support, and the rest of the second sub-heating coil is on a portion of the coil support excluding the protrusion. Supported,
A part of the second sub-heating coil and the rest of the second sub-heating coil are individually driven and controlled,
The induction heating according to any one of claims 1 to 12, wherein a maximum output of a part of the second sub-heating coil is lower than a remaining maximum output of the second sub-heating coil. Cooking device. The height dimension of the said protrusion part of the said coil support body is smaller than the height dimension of parts other than the said protrusion part among the said coil support bodies. The Claim 1 characterized by the above-mentioned. The induction heating cooker described in 1. The terminal block of the heating coil that connects the heating coil and a driving unit that drives the heating coil is disposed inside a main ventilation path forming member that forms the main ventilation path. The induction heating cooking appliance as described in any one of Claims 11-16. The induction heating cooker according to any one of claims 1 to 36, wherein the coil support is grounded. 26. The terminal block for grounding the coil support is disposed inside a main ventilation path forming member that forms the main ventilation path. The induction heating cooker according to one item.

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