WO2010137271A1 - 誘導加熱調理器 - Google Patents
誘導加熱調理器 Download PDFInfo
- Publication number
- WO2010137271A1 WO2010137271A1 PCT/JP2010/003432 JP2010003432W WO2010137271A1 WO 2010137271 A1 WO2010137271 A1 WO 2010137271A1 JP 2010003432 W JP2010003432 W JP 2010003432W WO 2010137271 A1 WO2010137271 A1 WO 2010137271A1
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- WIPO (PCT)
- Prior art keywords
- induction heating
- coil
- heating cooker
- holder
- coil holder
- Prior art date
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
- H05B6/1263—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using coil cooling arrangements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
- H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the present invention relates to an induction heating cooker, and particularly to an induction heating cooker equipped with a plurality of induction heating coils.
- an induction heating cooker induces an overcurrent with a high-frequency magnetic flux generated by flowing a high-frequency current through an induction heating coil, and heats an object to be heated with Joule heat generated thereby.
- induction heating coils mounted on the heating cooker tends to increase.
- various induction heating cookers have been proposed in which a plurality of induction heating coils are mounted on an induction heating cooker and the induction heating coil is efficiently cooled.
- a conventional induction heating cooker for example, “a plurality of (for example, for supporting the coil base 28 on which the third heating coil 22 is placed on the third heating coil 22 side of the fan cover 44”).
- One of the three support members 52 is integrally formed on the fan cover 44 so as to be close to the upper side of the side wall (vertical wall) of the intake fan case 46 ”(see, for example, Patent Document 1).
- the number of supporting means increases as the number of coil holding members increases, thereby inhibiting the flow of cooling air that cools the induction heating coil. For this reason, the ventilation load of cooling air increases and the pressure loss increases, thereby increasing the fan load. Therefore, the fan noise increases and the operation noise of the induction heating cooker increases.
- the present invention has been made to solve the above-described problems, and in an induction heating cooker equipped with a plurality of induction heating coils, the operation noise of the induction heating cooker can be suppressed. It is an object of the present invention to obtain an induction heating cooker that can efficiently mount the induction heating coil and can suppress an increase in cost.
- An induction heating cooker includes a top plate on which an object to be heated is placed, a plurality of induction heating coils provided below the top plate and having different center positions in plan view, and the induction heating coil.
- a plurality of induction heating coils can be held by a common coil holder. Since one coil holder can be fixed as long as it is supported at a minimum of three places, even if the number of induction heating coils mounted on the induction heating cooker increases, the number of support means for supporting the coil holder Can be suppressed. For this reason, it can suppress that the ventilation resistance of cooling air increases and a pressure loss increases, and can suppress the increase in fan load. Therefore, an increase in fan noise can be suppressed, and an increase in operation noise of the induction heating cooker can be suppressed.
- the support means can be reduced as compared with the conventional case, the arrangement space of the support means can be reduced. For this reason, a plurality of induction heating coils can be mounted with high space efficiency.
- FIG. 1 It is a perspective view which shows the coil holding body 12 which concerns on Embodiment 1 from the lower surface side. It is a perspective view which shows the state which removed the top plate 4 and the grill 5 of the induction heating cooking appliance concerning Embodiment 2.
- FIG. It is a perspective view which shows the state which removed the top plate 4, the grille 5, and the induction heating coil 13 of the induction heating cooking appliance which concerns on Embodiment 2.
- FIG. It is a top view (top view) which shows the state which removed the top plate 4, the grille 5, and the induction heating coil unit 11 of the induction heating cooking appliance which concerns on Embodiment 2.
- FIG. It is a bottom view of the induction heating coil unit 11 according to the second embodiment. 6 is a schematic longitudinal sectional view showing an induction heating coil unit 11 disposed on the back side of a housing 2 according to Embodiment 2.
- FIG. 1 is a perspective view showing the entire induction heating cooker according to Embodiment 1 of the present invention.
- the side on which the operation unit 6 is provided is described as the front side.
- a housing upper surface 3 is detachably disposed on the housing 2 of the main body 1 of the induction heating cooker.
- a grill 5 is disposed on the back side, and a top plate 4 is disposed in the center.
- An object to be heated (not shown) such as a pan is placed on the top plate 4.
- the grill 5 is air permeable, and the air flow of intake and exhaust passes smoothly.
- the cooking unit 7 is arrange
- FIG. 2 is a perspective view showing a state where the top plate 4 and the grill 5 of the induction heating cooker according to Embodiment 1 of the present invention are removed.
- a housing exhaust port 9 is provided in the center, and a housing air intake port 8 is provided on the left and right sides.
- the casing exhaust port 9 and the casing intake port 8 are covered with the grill 5 in a normal use state.
- the induction heating coil unit 11 includes a coil holding body 12 having a substantially pentagonal shape in plan view, three induction heating coils 13 having different centers held at the front left and right, and the back side of the coil holding body 12. That is, the coil holding body 12 has a configuration in which a coil holding member that holds each of the three induction heating coils is integrally formed.
- a single coil holder 12 may be formed by fixing a coil holding member that holds each of the three induction heating coils.
- a coil positioning member 15 is integrally formed on the upper surface of the coil holder 12 at positions that are the centers of the three induction heating coils 13. Each of the three induction heating coils 13 is positioned by inserting the coil positioning member 15 into the gap in the center.
- the interval holding member 16 is integrally projected on the upper portion of the coil positioning member 15. In the state where the top plate 4 is provided, these spacing members 16 are pressed against the lower surface of the top plate 4 directly or via a cushioning material (not shown).
- the coil holder 12 and the induction heating coil 13 are arranged substantially parallel to the top plate 4 with a predetermined distance from the lower surface of the top plate 4. Thereby, the distance of a to-be-heated material and the upper surface part of the induction heating coil 13 is maintained appropriately, and induction heating can be performed efficiently. Moreover, the space
- the coil holder 12 is provided with a gap 14 in a portion where the induction heating coil 13 is not held, so that ventilation is possible.
- the air gap 14 corresponds to the opening of the present invention.
- the coil holder 12 is provided with a wall surface so as to surround the outer peripheral portion of each induction heating coil 13, and the magnetic shield ring 29 is engaged by inserting the wall surface. Thereby, magnetic flux leakage from the induction heating coil 13 is suppressed.
- a cooking unit 7 is disposed below the electronic circuit board 17 and the induction heating coil unit 11.
- the cooking unit 7 is configured up to the center of the front surface of the main body 1 and performs cooking such as baking, steaming, fried food, steam cooking, and the like in the internal space.
- FIG. 3 is a perspective view showing a state where the top plate 4, the grille 5 and the induction heating coil 13 of the induction heating cooker according to Embodiment 1 of the present invention are removed.
- the coil holder 12 is provided with a holding portion 18 at a position below the induction heating coil 13.
- a gap 14 is formed between the holding portions 18, and the lower surface of the induction heating coil 13 can come into contact with the cooling air flowing below the coil holding body 12.
- a chamber 19 is disposed below the induction heating coil 13 disposed on the front surface side, and a blower outlet 20 is provided on the upper surface of the chamber 19. The cooling air is blown out from the outlet 20 to cool the induction heating coil 13 disposed above.
- FIG. 4 is a perspective view showing a state in which the top plate 4, the grille 5 and the induction heating coil unit 11 of the induction heating cooker according to Embodiment 1 of the present invention are removed.
- a supported member 27 is formed on the lower surface of the coil holder 12 at a position corresponding to the center of the induction heating coil 13 (shown in FIG. 6 described later).
- the supported member 27 has, for example, a substantially cylindrical shape with an open bottom.
- a support means is disposed at a position where the supported member 27 is supported.
- These support means are constituted by a support member 21 and an elastic body 22 such as a compression spring.
- the upper part of the support member 21 has, for example, a substantially cylindrical shape with an upper part opened.
- the elastic body 22 has an upper portion inserted into the supported member 27 of the coil holding body 12 and a lower portion inserted into the support member 21. Thereby, the coil holding body 12 is supported by the support member 21 via the elastic body 22. In the state in which the top plate 4 is provided, the elastic body 22 is compressed by the top plate 4 and the support member 21 (housing 2). By this reaction force, the spacing member 16 of the coil holder 12 is pressed directly or indirectly against the top plate 4.
- the support members 21 provided on the left and right sides of the front surface of the housing 2 are formed integrally with the chamber 19.
- the support member 21 provided at the center on the back side of the housing 2 is attached to the housing 2 as an independent member.
- Substrate case units 23 are disposed on the left and right side surfaces of the housing 2 (on both sides of the cooking unit 7) (in FIG. 4, the substrate case unit 23 disposed on the right side surface of the housing 2 is illustrated. ).
- the air inlet 24 of the substrate case unit 23 is connected to the housing air inlet 8.
- the exhaust port 25 of the substrate case unit 23 is connected to the chamber 19.
- FIG. 5 is a perspective view showing the substrate case unit 23 according to Embodiment 1 of the present invention.
- the substrate case unit 23 is provided with a cooling fan 26.
- an electronic circuit board 17 on which electronic components are mounted is housed.
- the electronic circuit board 17 is also mounted with components that generate heat and need to be cooled (objects to be cooled). Some components that require cooling include a heat sink (cooling fin) to increase cooling efficiency.
- the substrate case unit 23 is formed as an integral air passage from the intake port 24 to the exhaust port 25.
- the cooling air sucked from the intake port 24 by the operation of the cooling fan 26 passes through the cooling fan 26, cools components (objects to be cooled) of the internal electronic circuit board 17, and is then exhausted from the exhaust port 25. It is sent to the chamber 19.
- FIG. 6 is a perspective view showing the coil holder 12 according to Embodiment 1 of the present invention from the lower surface side.
- a supported member 27 is integrally formed on the lower surface of the coil holder 12 at a position corresponding to the center of the induction heating coil 13.
- the coil holding body 12 is supported by the support member 21 via the elastic body 22. That is, the supported member 27 is interposed between the supporting means (the supporting member 21 and the elastic body 22) and the coil holding body 12, and is fixed to the coil holding body 12 and supported by the supporting means.
- the coil positioning member 15 is provided above the supported member 27.
- the spacing member 16 formed on the upper part of the coil positioning member 15 is provided above the supported member 27.
- the interval holding location by the interval holding member 16 is formed at a position that is substantially the same as the support location by the support means in plan view.
- the holding part 18 of the coil holder 12 is provided with a ferrite 28 so as to be substantially orthogonal to the winding of the induction heating coil 13. That is, the ferrite 28 is arranged radially from the center of the induction heating coil 13 toward the outer periphery.
- the arrangement of the holding portion 18 is determined by the arrangement of the ferrite 28.
- the electronic component (object to be cooled) mounted on the electronic circuit board 17 is self-heated and the temperature rises by driving the induction heating coil 13. Further, the induction heating coil 13 also self-heats and the temperature rises. In order to maintain the functions of the electronic circuit board 17 and the induction heating coil 13, it is necessary to suppress the temperature rise below a predetermined temperature. Therefore, for example, the cooling fan 26 is controlled and driven based on information from temperature sensors (not shown) provided at various locations on the circuit of the electronic circuit board 17 to supply cooling air.
- Cooling air generated by driving the cooling fan 26 flows into the substrate case unit 23 from the outside of the main body 1 through the grill 5, the housing intake port 8, and the intake port 24 of the substrate case unit 23.
- the cooling air flowing into the substrate case unit 23 cools the object to be cooled of the electronic circuit board 17 in the substrate case unit 23, and then flows into the chamber 19 through the exhaust port 25.
- the cooling air that has flowed into the chamber 19 is blown out from the air outlet 20 on the top surface of the chamber 19 to cool the induction heating coil 13 disposed above. Since the air gap 14 is provided between the holding portions 18 of the coil holding body 12, the cooling air blown from the air outlet 20 reaches the induction heating coil 13 directly. That is, the induction heating coil 13 can be directly cooled by the cooling air blown from the blower outlet 20. In addition, the ferrite 28 held by the holding unit 18 generates heat due to the passing magnetic flux, but the cooling air hits the lower surfaces of these ferrites 28 and is simultaneously cooled.
- the cooling air blown from the air outlet 20 of the chamber 19 forms an air flow toward the housing exhaust port 9 provided at the center on the back side of the housing 2.
- the cooling air toward the housing exhaust 9 cools the induction heating coil 13 while flowing through the space above and below the induction heating coil 13 attached to the center of the back side of the coil holder 12.
- the coil holder 12 that holds the three induction heating coils 13 is supported by the three support means (the support member 21 and the elastic body 22). That is, there are three places where the coil holder 12 is held by the support means. For this reason, when the three induction heating coils 13 are cooled, the flow of the cooling air is not easily inhibited. For this reason, the ventilation resistance of cooling air is reduced and the increase in pressure loss is suppressed. Further, since the gap 14 is provided in the portion of the coil holder 12 where the induction heating coil 13 is not mounted, the flow of the cooling air is not easily inhibited. For this reason, the ventilation resistance of cooling air is reduced and the increase in pressure loss is suppressed.
- the cooling air flows below the coil holding body 12 through a portion where the induction heating coil 13 is not mounted and a gap between the windings of the induction heating coil 13. Ventilation from above is possible. For this reason, the cooling air can be supplied to the space between the upper surface of the induction heating coil 13 and the lower surface of the top plate 4, and the induction heating coil 13 can be efficiently cooled.
- the number of induction heating coils 13 having different winding centers held by the coil holder 12 is three sets, but the number of sets held by one coil holder 12 is two or more. If it is, the same effect will be acquired, but it is not limited to this.
- the number of the induction heating coil unit 11 and the coil holder 12 incorporated in the main body 1 is one, but the present invention is not limited to this. Even when a plurality of induction heating coil units 11 are incorporated, the same effect can be obtained if one coil holder 12 holds a plurality of induction heating coils 13 having different centers.
- the induction heating coil 13 has a substantially circular shape.
- the shape is not limited to this, and any shape can be used as long as the coil is wound in an elliptical shape, a rectangular shape, a rice ball shape, or the like. The same effect can be obtained.
- the flow of the cooling air and the air path configuration in the main body 1 are not limited to this, and if the cooling air flows in the space where the induction heating coil unit 11 is arranged, the housing intake port 8 and the housing The same effect can be obtained regardless of the arrangement of the exhaust port 9, the cooling fan 26, the electronic circuit board 17, etc., the outer shell of the substrate case unit 23, and the presence or absence of the chamber 19.
- a single coil holder 12 is formed by integrally forming coil holding members that hold each of the induction heating coils 13 having different centers, or are fixed to each other. Therefore, as compared with the case where the coil holding members holding the induction heating coils 13 having different centers are separately mounted on the housing 2, the number of the coil holding bodies 12 can be reduced and the number of components can be reduced. Further, the number of steps for mounting the induction heating coil unit 11 to the housing 2 is reduced, and the assembly cost can be reduced. By reducing the number of parts and mounting locations, problems due to variations in parts and assembly are reduced, and the reliability of the induction heating cooker is improved.
- the supported member 27 is formed integrally with the coil holding body 12, the elastic body 22 attached to the supporting member 21 can be directly engaged with the supported member 27. Thereby, the part for engaging the coil holding body 12 and the elastic body 22 becomes unnecessary, and the part cost for engaging them and the part for engaging them are attached to the coil holding body 12. Assembly cost can be reduced. Further, by forming the supported member 27 integrally with the coil holding body 12, the strength and reliability of the attachment of the supported member 27 to the coil holding body 12 is improved, and the product cost is low and the reliability is high. An induction heating cooker can be obtained.
- the conventional induction heating cooker in which each of the coil holding members holding the induction heating coils 13 having different centers is separately mounted on the housing 2 is supported at the minimum three places required to support the coil holding members. In this case, three times as many support means as the number of induction heating coils 13 are required.
- the induction heating cooker according to the first embodiment supports the induction heating coils 13 having different centers by three support means that are fewer than three times the number of induction heating coils 13. That is, the number of places where the coil holder 12 is supported by the support means is less than three times the number of induction heating coils 13. Since the flow of the cooling air is less likely to be inhibited due to the reduction of the support means, the ventilation resistance of the cooling air is reduced, and the increase in pressure loss is suppressed. For this reason, since the load of the cooling fan 26 is reduced, the noise of the cooling fan 26 can be suppressed. Therefore, an induction heating cooker with a quiet operation sound can be obtained.
- the parts cost and the assembly cost can be reduced, and an induction heating cooker with a low product cost can be obtained.
- casing 2 induction heating coil 13 arrangement
- the to-be-supported member 27, the support member 21, and the elastic body 22 can be reduced by reducing the to-be-supported member 27, the support member 21, and the elastic body 22.
- FIG. As a result, other components can be arranged, and the mounting density is improved.
- the selection range of the arrangement position of the support member 21 is widened, the degree of freedom in design is increased, and more induction heating coils 13 and other functional parts can be mounted, resulting in a highly functional induction heating cooker. be able to.
- the supported member 27 of the coil holder 12 is disposed at the approximate center position of the induction heating coil 13 (because the coil holder 12 is supported at the approximate center position of the induction heating coil 13),
- the support member 27, the support member 21, and the elastic body 22 are inside the induction heating coil 13. For this reason, compared with the case where the to-be-supported member 27 is arrange
- the center of gravity of the induction heating coil 13 and the coil holding body 12 is arranged in a polygon connecting the supporting places (supported members 27) which are outside of the support places (supported members 27) of the coil holding body 12. Therefore, the induction heating coil unit 11 can be stably independent (supported). Thereby, the workability
- the gap 14 in the portion of the coil holder 12 where the induction heating coil 13 is not disposed, it is possible to reduce the inhibition of the flow of cooling air, reduce the ventilation resistance, and suppress the increase in pressure loss. it can. Further, the cooling air can be passed from the lower side to the upper side of the coil holding body 12 through these gaps 14, and the side surface of the induction heating coil 13 is cooled, or the space between the upper surface of the induction heating coil 13 and the lower surface of the top plate 4. Cooling air flows and the induction heating coil 13 can be efficiently cooled. For this reason, when the load of the cooling fan 26 is reduced, the noise of the cooling fan 26 is reduced, and an induction heating cooker having a quiet operation sound can be obtained.
- the coil holding body 12 is provided with at least three spacing holding members 16 and these are integrally formed with the coil holding body 12, the coil holding body 12 and the induction heating coil 13 are connected to the lower surface of the top plate 4 and a predetermined amount. Are arranged substantially parallel to the top plate 4 with an interval of. Thereby, the distance of a to-be-heated material and the upper surface part of the induction heating coil 13 is maintained appropriately, and induction heating can be performed efficiently. For this reason, heating efficiency improves and it can be set as a heating cooker with high energy efficiency.
- the cooling efficiency of the induction heating coil 13 improves and the noise of the cooling fan 26 can be reduced.
- the interval holding member 16 integrally with the coil holder 12, it is possible to reduce the component cost and the assembly cost. Therefore, it is possible to provide an induction heating cooker that saves energy, has low operation noise, and low product cost.
- the ferrite 28 and the like are arranged so as to be substantially orthogonal to the winding of the induction heating coil 13 (radially from the center of the induction heating coil 13 to the outer periphery) and are held by the coil holder 12, so that induction heating is performed.
- the magnetic flux generated by the coil 13 can be concentrated on the object to be heated above the induction heating coil 13. For this reason, heating efficiency can be improved and energy efficiency can be made high.
- the holding portion 18 of the ferrite 28 corresponding to the plurality of induction heating coils 13 is formed integrally with the coil holding body 12, the component cost and the assembly cost can be reduced, so that the induction heating cooking with low energy consumption and low product cost can be achieved.
- the positioning part 15 for positioning by inserting the induction heating coil 13 into the gap in the center of the coil winding is formed integrally with the coil holding body 12, the object to be heated disposed above or below It is easy to keep the positional relationship with the arranged ferrite 28 appropriate. For this reason, heating efficiency can be improved and energy efficiency can be made high. Further, the workability of attaching the induction heating coil 13 to the coil holder 12 is improved, and the component cost and assembly cost can be reduced by forming the positioning portion 15 integrally with the coil holder 12, thereby saving energy. Therefore, it can be an induction heating cooker with a low product cost.
- FIG. The induction heating cooker according to the second embodiment will be described with reference to FIGS.
- the induction heating cooker according to the second embodiment and the induction heating cooker according to the first embodiment are different only in the number and arrangement of the induction heating coil units 11 and the form of the coil holder 12. The part is mainly described.
- items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
- FIG. 1 is a perspective view showing the entire induction heating cooker according to Embodiment 2 of the present invention. The form and function of each part are the same as in the first embodiment.
- FIG. 5 is a perspective view showing the substrate case unit 23 according to Embodiment 1 of the present invention. The configuration / function of the substrate case unit 23 is the same as that of the first embodiment.
- FIG. 7 is a perspective view showing a state where the top plate 4 and the grill 5 of the induction heating cooker according to Embodiment 2 of the present invention are removed.
- Three induction heating coil units 11 are arranged inside the housing 2 at a position below the top plate 4 on the left and right sides on the front side and on the back side.
- Each induction heating coil unit 11 holds a plurality of induction heating coils 13 having different centers by a single coil holder 12.
- the induction heating coil units 11 arranged on the left and right sides of the front surface of the housing 2 have the same configuration and function.
- the coil holder 12 having a substantially circular shape in plan view one induction heating coil 13 is disposed at the center, and eight induction heating coils are disposed on the outer periphery thereof. That is, the coil holders 12 of the induction heating coil unit 11 disposed on the left and right sides of the front surface of the housing 2 hold a total of nine induction heating coils 13 having different centers.
- the induction heating coil units 11 arranged on the left and right of the front side of the housing 2 heat one object to be heated by these nine induction heating coils 13.
- the coil holders 12 arranged on the left and right sides of the front side of the housing 2 are provided with three supported members 27 on the outer periphery thereof. That is, the supported member 27 is arranged so that the center of gravity of the induction heating coil 13 and the coil holding body 12 to be held is inside the polygon connecting the support places (three places) of the coil holding body 12.
- a spacing member 16 is disposed substantially above the supported member 27. The spacing member 16 is pressed against the bottom surface of the top plate 4 to position the induction heating coil 13 in the height direction. Further, since the spacing member 16 transmits the force from the elastic body 22 to the top plate 4 substantially linearly, no unnecessary moment is generated in the coil holding body 12.
- a plurality of coil positioning members 15 are provided on the coil holders 12 arranged on the left and right sides of the front side of the housing 2.
- the coil positioning member 15 for positioning the central induction heating coil 13 has a cylindrical shape
- the coil positioning member 15 for positioning the outer induction heating coil 13 has a cross shape.
- Each of the induction heating coils 13 is positioned at an appropriate position by inserting a coil positioning member 15 into a gap in the center.
- An inner space of the cylindrical coil positioning member 15 is a temperature detection means mounting portion 30 to which a temperature detection means 33 such as a thermistor or an infrared sensor is attached.
- the cylindrical coil positioning member 15 and the cross-shaped coil positioning member 15 can be exchanged with each other, and it is possible to provide the temperature detecting means 33 of the necessary position and number at the place where the coil positioning member 15 is disposed.
- Magnetic shield rings 29 are engaged with the coil holders 12 disposed on the left and right sides of the front surface of the housing 2.
- the magnetic shield ring 29 surrounds all the induction heating coils 13 having different centers mounted on the coil holder 12, and reduces leakage of magnetic flux from each induction heating coil 13.
- nine induction heating coils 13 are held by one coil holder 12, but two or more induction heating coils 13 having different centers are held by one coil holder 12. If so, the same effect can be obtained regardless of the number and arrangement of the induction heating coils 13.
- the induction heating coil 13 is substantially circular. However, the shape of the induction heating coil 13 is not limited to this. The same effect can be obtained.
- the induction heating coil unit 11 disposed on the back side of the housing 2 holds three induction heating coils 13 having different centers on a coil holder 12. Each induction heating coil 13 heats a different object to be heated.
- the supported member 27 is provided in the outer peripheral part of the coil holding body 12 arrange
- a spacing member 16 is disposed substantially above the supported member 27. The spacing member 16 is pressed against the bottom surface of the top plate 4 to position the induction heating coil 13 in the height direction. Further, since the spacing member 16 transmits the force from the elastic body 22 to the top plate 4 substantially linearly, no unnecessary moment is generated in the coil holding body 12.
- the coil holder 12 disposed on the back side of the casing 2 is provided with three cylindrical coil positioning members 15 at the left, right, and center.
- Each of the induction heating coils 13 is positioned at an appropriate position by inserting a coil positioning member 15 into a gap in the center.
- An inner space of each cylindrical coil positioning member 15 is a temperature detection means mounting portion 30.
- the temperature detection means mounting portion 30 supports a temperature detection means 33 such as a thermistor or an infrared sensor.
- the temperature detection means 33 corresponds to the temperature sensor of the present invention
- the temperature detection means mounting portion 30 corresponds to the temperature sensor support means of the present invention.
- the coil holding body 12 disposed on the back side of the housing 2 is provided with a gap 14 in a held portion between the portions where the induction heating coils 13 are held, so that ventilation is possible.
- this Embodiment 2 although it is set as the structure which heats one to-be-heated object with the one induction heating coil 13, it does not restrict to this.
- a plurality of objects to be heated are heated while a single object to be heated is heated by a plurality of induction heating coils 13 having different centers. Even if it is held by one coil holder, the same effect can be obtained.
- FIG. 8 is a perspective view showing a state where the top plate 4, the grille 5 and the induction heating coil 13 of the induction heating cooker according to the second embodiment of the present invention are removed.
- a portion of the coil holder 12 on which the induction heating coil 13 is placed includes a holding portion 18 and a gap 14. Further, a ferrite 28 is held in the holding portion 18 (shown in FIG. 10 described later).
- the arrangement of the holding unit 18 is arranged in accordance with the arrangement of the ferrite 28. Due to the air gap 14, the lower surface of the induction heating coil 13 can come into contact with the cooling air flowing in the space below the coil holder 12.
- a chamber 19 is disposed below the induction heating coil 13 disposed on the left and right of the front side of the housing 2, and a blower outlet 20 is provided on the upper surface of the chamber 19. The cooling air is blown out from the outlet 20 to cool the induction heating coil 13 and the ferrite 28 disposed above.
- An electronic circuit board 17 is disposed below both side surfaces of the coil holder 12 disposed on the back side of the housing 2.
- FIG. 9 is a plan view (top view) showing a state where the top plate 4, the grille 5 and the induction heating coil unit 11 of the induction heating cooker according to Embodiment 2 of the present invention are removed.
- Support means (support member 21 and elastic body 22) are disposed at a position below the supported member 27 of the coil holder 12.
- the coil holding body 12 is supported by the support member 21 via the elastic body 22, and in a state where the top plate 4 is provided, the elastic body 22 is compressed by the top plate 4 and the support member 21 (housing 2). .
- the spacing member 16 of the coil holder 12 is pressed directly or indirectly against the top plate 4.
- the support members 21 provided on the left and right sides of the front surface of the housing 2 are formed integrally with the chamber 19. Further, the support member 21 disposed in the center of the front surface side of the housing 2 is attached to the housing 2 as an independent member, and the support members 21 disposed on the left and right sides of the back surface are formed integrally with the substrate case 31. .
- a board case unit 23 is disposed on the left and right side surfaces of the housing 2 (on both sides of the cooking unit 7).
- the intake port 24 of the substrate case unit 23 is connected to the housing intake port 8.
- the exhaust port 25 of the substrate case unit 23 is connected to the chamber 19.
- FIG. 10 is a bottom view of the induction heating coil unit 11 according to Embodiment 2 of the present invention.
- a supported member 27 is integrally formed on the lower surface of the coil holder 12 at a position supported by the support means.
- the holding part 18 of the coil holder 12 is provided with a ferrite 28 so as to be substantially orthogonal to the winding of the induction heating coil 13. That is, the ferrite 28 is arranged radially from the center of the induction heating coil 13 toward the outer periphery.
- FIG. 11 is a schematic longitudinal sectional view showing the induction heating coil unit 11 disposed on the back side of the housing 2.
- a support member 21 is attached to the housing 2, and a lower portion of the elastic body 22 is inserted into the support member 21.
- the upper part of the elastic body 22 is inserted into the supported member 27 of the coil holding body 12.
- the elastic body 22 is compressed by the top plate 4 and the support member 21 (housing 2).
- the spacing member 16 of the coil holder 12 is pressed directly or indirectly against the top plate 4.
- the induction heating coil 13 is positioned by inserting a coil positioning member 15 formed integrally with the coil holder 12 into the gap in the center.
- the inside of the cylindrical positioning portion 15 is a temperature detection means mounting portion 30.
- An elastic body 34 such as a coil spring or cylindrical rubber is inserted into the temperature detection means mounting portion 30, and a temperature detection means 33 such as a thermistor is inserted into a hollow portion of the elastic body 34.
- the temperature detection means 33 is pressed against the lower surface of the top plate 4 by the elastic body 34, and detects the temperature of the object to be heated placed on the upper surface of the top plate 4 via the top plate 4.
- the coil holder 12 is integrally formed with a wall surface covering the outer periphery of the induction heating coil 13.
- the magnetic shield ring 29 is engaged by inserting the wall surface on the inner side, and is locked by a locking portion 32 formed integrally with the wall surface, for example.
- Cooling air generated by driving the cooling fan 26 flows into the substrate case unit 23 from the outside of the main body 1 through the grill 5, the housing intake port 8, and the intake port 24 of the substrate case unit 23.
- the cooling air flowing into the substrate case unit 23 cools the object to be cooled of the electronic circuit board 17 in the substrate case unit 23, and then flows into the chamber 19 through the exhaust port 25.
- the cooling air that has flowed into the chamber 19 is blown out from the air outlet 20 on the upper surface of the chamber 19.
- positioned upward it arrange
- the air gap 14 is provided between the holding portions 18 of the coil holding body 12, the cooling air blown from the air outlet 20 reaches the induction heating coil 13 directly. That is, the induction heating coil 13 can be directly cooled by the cooling air blown from the blower outlet 20.
- the ferrite 28 held by the holding unit 18 generates heat due to the passing magnetic flux, but the cooling air hits the lower surfaces of these ferrites 28 and is simultaneously cooled.
- the cooling air blown from the air outlet 20 of the chamber 19 forms an air flow toward the housing exhaust port 9 provided at the center on the back side of the housing 2.
- the cooling air toward the housing exhaust 9 cools the induction heating coil 13 while flowing through the space above and below the induction heating coil 13 mounted on the induction heating coil unit 11 disposed on the back side of the housing 2. Do it.
- the three coil holders 12 according to the second embodiment are supported by a total of nine support means (support member 21 and elastic body 22). That is, there are three places where each coil holder 12 is held by the support means. For this reason, when the induction heating coil 13 mounted on these coil holders 12 is cooled, the flow of the cooling air is not easily inhibited. For this reason, the ventilation resistance of cooling air is reduced and the increase in pressure loss is suppressed. Further, since the gap 14 is provided in the portion of the coil holder 12 where the induction heating coil 13 is not mounted, the flow of the cooling air is not easily inhibited. For this reason, the ventilation resistance of cooling air is reduced and the increase in pressure loss is suppressed.
- the cooling air flows below the coil holding body 12 through a portion where the induction heating coil 13 is not mounted and a gap between the windings of the induction heating coil 13. Ventilation from above is possible. For this reason, the side surface of the induction heating coil 13 is cooled, the cooling air can be supplied to the space between the upper surface of the induction heating coil 13 and the lower surface of the top plate 4, and the induction heating coil 13 can be efficiently cooled.
- the flow of the cooling air and the air path configuration in the main body 1 are not limited to this. As long as the cooling air is flowing in the space where the induction heating coil unit 11 is arranged, the housing intake port 8 and the housing The same effect can be obtained regardless of the arrangement of the exhaust port 9, the cooling fan 26, the electronic circuit board 17, etc., the outer shell of the substrate case unit 23, and the presence or absence of the chamber 19.
- a single coil holder 12 is formed by integrally forming coil holding members that hold each of the induction heating coils 13 having different centers, or are fixed to each other. Therefore, as compared with the case where the coil holding members holding the induction heating coils 13 having different centers are separately mounted on the housing 2, the number of the coil holding bodies 12 can be reduced and the number of components can be reduced. Further, the number of steps for mounting the induction heating coil unit 11 to the housing 2 is reduced, and the assembly cost can be reduced. By reducing the number of parts and mounting locations, problems due to variations in parts and assembly are reduced, and the reliability of the induction heating cooker is improved.
- the supported member 27 is formed integrally with the coil holding body 12, the elastic member 22 attached to the supporting member 21 can be directly engaged with the supported member 27. Thereby, the part for engaging the coil holding body 12 and the elastic body 22 becomes unnecessary, and the part cost for engaging them and the part for engaging them are attached to the coil holding body 12. Assembly cost can be reduced. Further, by forming the supported member 27 integrally with the coil holding body 12, the strength and reliability of the attachment of the supported member 27 to the coil holding body 12 is improved, and the product cost is low and the reliability is high. An induction heating cooker can be obtained.
- the conventional induction heating cooker in which each of the coil holding members holding the induction heating coils 13 having different centers is separately mounted on the housing 2 is supported at the minimum three places required to support the coil holding members. In this case, three times as many support means as the number of induction heating coils 13 are required.
- the coil holding body 12 arranged on the back side of the housing 2 is supported by three support means that are less than three times the number of induction heating coils 13. That is, the number of support portions of the coil holder 12 disposed on the back side of the housing 2 is less than three times the number of induction heating coils 13.
- the ventilation resistance of the cooling air is reduced, and the increase in pressure loss is suppressed. For this reason, since the load of the cooling fan 26 is reduced, the noise of the cooling fan 26 can be suppressed. Therefore, an induction heating cooker with a quiet operation sound can be obtained. Also in the coil holders 12 arranged on the left and right sides of the front surface of the housing 2, the number of support means can be reduced from 27 to 3 by supporting nine induction heating coils 13 with one coil holder 12. Therefore, the same effect can be obtained. Moreover, by reducing the support member 21 and the elastic body 22, the parts cost and the assembly cost can be reduced, and an induction heating cooker with a low product cost can be obtained.
- the installation space for the supporting means in the housing 2 (the space where the induction heating coil 13 is arranged) can be reduced.
- other components can be arranged, and the mounting density is improved.
- the selection range of the arrangement position of the support member 21 is widened, the degree of freedom in design is increased, and more induction heating coils 13 and other functional parts can be mounted, resulting in a highly functional induction heating cooker. be able to.
- the induction heating coils 13 on the left and right sides of the coil holder 12 arranged on the back side of the housing 2 are arranged above the electronic circuit board 17, they are arranged in the conventional induction heating cooker. It was difficult.
- the conventional induction heating cooker needs to provide at least three support means for each induction heating coil 13 because the electronic circuit board 17 becomes an obstacle and it is difficult to arrange the support means.
- the induction heating coil 13 disposed above the electronic circuit board 17 is held by one coil holder 12, the number of the support members 21 can be reduced, whereby the layout of the support members 21.
- the induction heating coil 13 can be installed in a place where mounting has been difficult in the past. Thereby, many induction heating coils 13 can be mounted.
- the back side of the installation space in the housing 2 is a space such as an air passage, and the support member 21.
- the mounting is possible because the coil holder 12 supports the coil.
- the chamber 19 is arranged below, so that a plurality of coil holders 12 are arranged and a plurality of induction heating coils are arranged.
- mounting is possible by holding a plurality of induction heating coils 13 having different centers with one coil holder 12.
- the mounting density of the induction heating coil 13 is improved. Moreover, since the selection range of the arrangement position of the support member 21 is widened, the degree of freedom in design is increased, and more induction heating coils 13 and other functional parts can be mounted. For this reason, it becomes possible to heat a to-be-heated object and one to-be-heated object with the several induction heating coil 13, and it is a highly functional induction heating cooker which realized heating efficiency improvement and advanced cooking control. It can be.
- the center of gravity of the induction heating coil 13 and the coil holding body 12 is arranged in a polygon connecting the supporting places (supported members 27) which are outside of the support places (supported members 27) of the coil holding body 12. Therefore, the induction heating coil unit 11 can be stably independent (supported). Thereby, the workability
- the air gap 14 in the portion of the coil holder 12 where the induction heating coil 13 is not disposed, it is possible to reduce the inhibition of the flow of cooling air, reduce the ventilation resistance, and suppress the increase in pressure loss. it can. Further, the cooling air can be passed from the lower side to the upper side of the coil holding body 12 through these gaps 14, and the cooling air flows into the space between the upper surface of the induction heating coil 13 and the lower surface of the top plate 4 to efficiently cool the induction heating coil 13. can do. For this reason, when the load of the cooling fan 26 is reduced, the noise of the cooling fan 26 is reduced, and an induction heating cooker having a quiet operation sound can be obtained.
- the coil holding body 12 is provided with at least three spacing holding members 16 and these are integrally formed with the coil holding body 12, the coil holding body 12 and the induction heating coil 13 are connected to the lower surface of the top plate 4 and a predetermined amount. Are arranged substantially parallel to the top plate 4 with an interval of. Thereby, the distance of a to-be-heated material and the upper surface part of the induction heating coil 13 is maintained appropriately, and induction heating can be performed efficiently. For this reason, heating efficiency improves and it can be set as a heating cooker with high energy efficiency.
- the cooling efficiency of the induction heating coil 13 improves and the noise of the cooling fan 26 can be reduced.
- the interval holding member 16 integrally with the coil holder 12, it is possible to reduce the component cost and the assembly cost. Therefore, it is possible to provide an induction heating cooker that saves energy, has low operation noise, and low product cost.
- the ferrite 28 and the like are arranged so as to be substantially orthogonal to the winding of the induction heating coil 13 (radially from the center of the induction heating coil 13 to the outer periphery) and are held by the coil holder 12, so that induction heating is performed.
- the magnetic flux generated by the coil 13 can be concentrated on the object to be heated above the induction heating coil 13. For this reason, heating efficiency can be improved and energy efficiency can be made high.
- the holding portion 18 of the ferrite 28 corresponding to the plurality of induction heating coils 13 is formed integrally with the coil holding body 12, the component cost and the assembly cost can be reduced, so that the induction heating cooking with low energy consumption and low product cost can be achieved.
- the temperature detecting means mounting portion 30 on the coil holder 12, it becomes easy to detect the temperature of the lower surface of the heated object, and the accuracy of temperature control and cooking control of the heated object can be improved. . Further, since the temperature detecting means 33 can be easily attached and the number of parts can be reduced, the parts cost and the assembly cost can be reduced, so that the induction heating cooker having high cooking performance and low product cost can be obtained.
- the magnetic shield ring 29 can be easily attached.
- the parts cost and assembly cost can be reduced by reducing the number of parts, the leakage magnetic flux of the induction heating coil 13 can be reduced to reduce the influence of external magnetic flux and electromagnetic waves, and the product cost is low and the safety is high. It can be an induction heating cooker.
- the induction heating coil units 11 arranged on the left and right sides of the front surface of the housing 2 a plurality of induction heating coils 13 having different centers are surrounded by one magnetic shield ring 29.
- the number of parts can be reduced, the labor of assembling can be reduced, and the parts cost and assembling cost can be reduced.
- the space of the magnetic-shielding ring 29 becomes unnecessary, the mounting density of the induction heating coil 13 to the coil holder 12 can be improved, and the heating efficiency can be improved.
- the cooling efficiency can be improved, and the induction heating cooker with low product cost, high heating efficiency, and high cooling efficiency can be obtained. .
- the positioning part 15 for positioning by inserting the induction heating coil 13 into the gap in the center of the coil winding is formed integrally with the coil holding body 12, the object to be heated disposed above or below It is easy to keep the positional relationship with the arranged ferrite 28 appropriate. For this reason, heating efficiency can be improved and energy efficiency can be made high. Further, the workability of attaching the induction heating coil 13 to the coil holder 12 is improved, and the component cost and assembly cost can be reduced by forming the positioning portion 15 integrally with the coil holder 12, thereby saving energy. Therefore, it can be an induction heating cooker with a low product cost.
- two support means (right side and front side) of the support means for supporting the coil holder 12 disposed on the right side of the front surface of the housing 2 are chambers provided on the left side of the front surface of the housing 2.
- 19 is a region connecting the air outlet 20 installation range and the outer periphery of the case exhaust 9, and the air outlet 20 installation range of the chamber 19 provided on the right side of the front surface of the case 2 and the outer periphery of the case exhaust 9. It is arranged outside the area connecting
- two support means (left side and front side) of the support means for supporting the coil holding body 12 disposed on the left side of the front surface of the housing 2 are also disposed outside these regions. .
- two support means (back side left and right) of the support means for supporting the coil holder 12 arranged on the back side of the housing 2 are also arranged outside these regions. For this reason, most of the cooling air blown out from the air outlet 20 of the chamber 19 passes through the above-described region and travels toward the housing exhaust port 9, so that the flow of the cooling air is less likely to be inhibited, and the ventilation resistance of the cooling air is reduced. Thus, an increase in pressure loss is suppressed. For this reason, since the load of the cooling fan 26 is reduced, the noise of the cooling fan 26 can be suppressed. Therefore, an induction heating cooker with a quiet operation sound can be obtained.
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- Induction Heating Cooking Devices (AREA)
Abstract
Description
このような従来の誘導加熱調理器としては、例えば「ファンカバー44の第3の加熱コイル22側には、第3の加熱コイル22が載置されたコイルベース28を支えるための複数(例えば、三つ)の支持部材の一つ52がファンカバー44上に吸気ファンケース46の側壁(垂直壁)上方に近接した状態で一体的に形成されている。」(例えば特許文献1参照)というものが提案されている。
(1)複数の誘導加熱コイルを共通のコイル保持体で保持することができる。一つのコイル保持体は最小3ヶ所で支持されていれば固定することが可能なので、誘導加熱調理器に搭載される誘導加熱コイルの数が増えても、コイル保持体を支持する支持手段の数の増加を抑制することができる。このため、冷却風の通風抵抗が増して圧力損失が増加することを抑制でき、送風機負荷の増加を抑制できる。したがって、送風機騒音の増加を抑制でき、誘導加熱調理器の動作騒音の増加を抑制することができる。
図1は、本発明の実施の形態1に係る誘導加熱調理器全体を示す斜視図である。なお、以下の説明では、操作部6が設けられている側を前面側として説明する。
誘導加熱調理器の本体1の筐体2には、その上側に筐体上面3が着脱自在に配置される。この筐体上面3には、背面側にグリル5が配置され、中央にトッププレート4が配置されている。トッププレート4の上には鍋等の被加熱物(図示せず)が載置される。グリル5は通気性があり、吸気及び排気の気流がスムースに通過する。
また、本体1には、その前面側中央に調理ユニット7が配置され、前面側の左右に操作部6が設けられている。
筐体上面3の背面側(グリル5と対応する位置)には、中央に筐体排気口9が設けられており、左右側に筐体吸気口8が設けられている。これら筐体排気口9及び筐体吸気口8は、通常の使用状態においては、グリル5で覆われている。
また、コイル保持体12には各誘導加熱コイル13の外周部を囲むように壁面が設けられ、防磁リング29はこの壁面が挿入されることにより係合されている。これにより、誘導加熱コイル13からの磁束漏れを抑制している。
電子回路基板17及び誘導加熱コイルユニット11の下方には、調理ユニット7が配置される。調理ユニット7は、本体1前面中央までを含め構成され、内部空間にて焼く、蒸す、揚げ物等の加熱調理・スチーム調理等がおこなわれる。
コイル保持体12には、誘導加熱コイル13の下方となる位置に、保持部18が設けられている。これら保持部18の間は空隙14となっており、誘導加熱コイル13の下面はコイル保持体12の下方を流れる冷却風と接触可能となっている。また、前面側に配置される誘導加熱コイル13の下方にはチャンバー19が配置され、チャンバー19上面には吹出口20が設けられている。この吹出口20から冷却風を吹出すことにより、上方に配置される誘導加熱コイル13を冷却している。
コイル保持体12の下面には、誘導加熱コイル13中心と対応する位置に被支持部材27が形成されている(後述の図6に示す)。被支持部材27は、例えば下部が開口した概円筒形状となっている。この被支持部材27を支持する位置には、支持手段が配置されている。これら支持手段は、支持部材21、及び圧縮バネ等の弾性体22等により構成されている。支持部材21の上部は、例えば上部が開口した概円筒形状となっている。弾性体22は、上部がコイル保持体12の被支持部材27に挿入され、下部が支持部材21に挿入される。これにより、コイル保持体12は、弾性体22を介して支持部材21に支持される。トッププレート4が設けられた状態においては、弾性体22は、トッププレート4と支持部材21(筐体2)とによって圧縮される。この反力により、コイル保持体12の間隔保持部材16は、トッププレート4に直接的又は間接的に押し当てられる。
基板ケースユニット23には冷却ファン26が備えられている。また、基板ケースユニット23の内部には、電子部品が実装された電子回路基板17が納められている。電子回路基板17には、発熱を伴い冷却が必要な部品(被冷却物)も実装されている。冷却が必要な部品のなかには、冷却効率を高めるため、ヒートシンク(冷却フィン)を備えるものもある。
コイル保持体12の下面には、誘導加熱コイル13中心と対応する位置に被支持部材27が一体的に形成されている。弾性体22の上部がコイル保持体12の被支持部材27に挿入されることにより、コイル保持体12は、弾性体22を介して支持部材21に支持される。つまり、被支持部材27は、支持手段(支持部材21及び弾性体22)とコイル保持体12の間に介在して、コイル保持体12に固定されるとともに支持手段により支持される。
図6に示すように、コイル位置決め部材15は被支持部材27の上方に設けられている。つまり、コイル位置決め部材15の上部に形成されている間隔保持部材16は、被支持部材27の上方に設けられている。換言すると、間隔保持部材16による間隔保持箇所が、支持手段による支持箇所と平面視において略同一となる位置に形成されている。誘導加熱調理器を組み立てた際(トッププレート4を設けた際)、弾性体22の反力は概直線的に間隔保持部材16へ伝えられるので、コイル保持体12には不要なモーメントが生じない。
次に誘導加熱調理器の動作について説明する。
このように構成された誘導加熱調理器においては、電子回路基板17の回路が動作することにより、誘導加熱コイル13が駆動され電流が流れる。電流が流れることにより、誘導加熱コイル13から磁力線が発生する。これにより、誘導加熱コイル13の概上方のトッププレート4上に載置される被加熱物(図示せず)に渦電流が生じ、被加熱物自体が発熱し加熱調理がおこなわれる。このとき、磁力線はコイル保持体12に保持されるフェライト28によって上方の被加熱物へ集中するよう作用し、被加熱物の加熱効率を高めている。
また、本実施の形態1においては、本体1に内蔵される誘導加熱コイルユニット11及びコイル保持体12は1つであるが、これに限定するものではない。複数の誘導加熱コイルユニット11を内蔵した場合においても、1つのコイル保持体12が中心の異なる複数の誘導加熱コイル13を保持していれば同様の効果が得られる。
また、本実施の形態1においては、誘導加熱コイル13は概円形であるが、これに限るものではなく、楕円形、四角形、おむすび形等の周状に巻かれたコイルであれば形状は問わず同様の効果は得られる。
また、本体1内の冷却風の流れ・風路構成はこれに限るものではなく、誘導加熱コイルユニット11が配置される空間内に冷却風が流れていれば、筐体吸気口8、筐体排気口9、冷却ファン26、電子回路基板17等の配置や、基板ケースユニット23の外殻やチャンバー19の有無によらず同様の効果が得られる。
また、被支持部材27、支持部材21及び弾性体22を減らせることにより、筐体2内(誘導加熱コイル13配置空間)における支持手段の設置スペースを削減できる。これにより、他の部品が配置可能となり、実装密度が向上する。また、支持部材21の配置位置の選択範囲が広まることから、設計の自由度が高まり、より多くの誘導加熱コイル13や他の機能部品の実装が可能となり、高機能な誘導加熱調理器とすることができる。
図1,5,7~11を用いて、本実施の形態2に係る誘導加熱調理器を説明する。本実施の形態2に係る誘導加熱調理器と実施の形態1に係る誘導加熱調理器とは、誘導加熱コイルユニット11の数・配置、コイル保持体12の形態が異なるのみなので、以下ではこの異なる部分を主に記載する。なお、本実施の形態2において、特に記述しない項目については実施の形態1と同様とし、同一の機能や構成については同一の符号を用いて述べることとする。
また、図5は、本発明の実施の形態1に係る基板ケースユニット23を示す斜視図である。基板ケースユニット23の構成・機能は実施の形態1と同様である。
トッププレート4の下方となる位置の筐体2の内部には、前面側の左右と背面側に、3つの誘導加熱コイルユニット11が配置されている。各誘導加熱コイルユニット11のそれぞれは、複数の中心の異なる誘導加熱コイル13を1つのコイル保持体12で保持している。
なお、本実施の形態2においては9個の誘導加熱コイル13を1つのコイル保持体12で保持しているが、1つのコイル保持体12で中心の異なる2つ以上の誘導加熱コイル13を保持していれば、誘導加熱コイル13の数・配置によらず同様の効果は得られる。
また、本実施の形態2においては、誘導加熱コイル13は概円形であるが、これに限るものではなく、楕円形、四角形、おむすび形等の周状に巻かれたコイルであれば形状は問わず同様の効果は得られる。
なお、本実施の形態2では1つの被加熱物を1つの誘導加熱コイル13で加熱する構成としているが、これに限るものではない。例えば、前面側の誘導加熱コイルユニット11と同様に1つの被加熱物を複数の中心の異なる誘導加熱コイル13で加熱する構成としながら複数の被加熱物を加熱し、すべての誘導加熱コイル13を1つのコイル保持体で保持しても同様の効果は得られる。
コイル保持体12における誘導加熱コイル13を載置する部分は、保持部18と空隙14等から構成されている。また、保持部18にはフェライト28が保持されている(後述の図10に示す)。保持部18の配置はフェライト28の配置に合わせた配置となる。空隙14により、誘導加熱コイル13の下面はコイル保持体12下方の空間を流れる冷却風と接触可能となっている。
筐体2の背面側に配置されるコイル保持体12の両側面側下方には電子回路基板17が配置されている。
コイル保持体12の被支持部材27の下方となる位置に、支持手段(支持部材21及び弾性体22)が配置されている。コイル保持体12は弾性体22を介して支持部材21に支持され、トッププレート4が設けられた状態においては、弾性体22はトッププレート4と支持部材21(筐体2)とによって圧縮される。この反力により、コイル保持体12の間隔保持部材16は、トッププレート4に直接的又は間接的に押し当てられる。
コイル保持体12の下面には、支持手段によって支持される位置に被支持部材27が一体的に形成されている。弾性体22の上部がコイル保持体12の被支持部材27に挿入されることにより、コイル保持体12は、弾性体22を介して支持部材21に支持される。
コイル保持体12の保持部18には、誘導加熱コイル13の巻線と概直交するようにフェライト28が設けられている。つまり、フェライト28は、誘導加熱コイル13の中心から外周に向け放射状に配置されている。フェライト28を設けることにより、誘導加熱コイル13から発生する磁力線をトッププレート4上方の被加熱物に集中させることができる。
筐体2には支持部材21が取付けられており、支持部材21には弾性体22の下部が挿入されている。また、弾性体22の上部はコイル保持体12の被支持部材27に挿入されている。トッププレート4が設けられた状態においては、弾性体22は、トッププレート4と支持部材21(筐体2)とによって圧縮される。この反力により、コイル保持体12の間隔保持部材16は、トッププレート4に直接的又は間接的に押し当てられる。誘導加熱コイル13は、中心部の空隙にコイル保持体12に一体的に形成されたコイル位置決め部材15が挿入され位置決めされる。
次に誘導加熱調理器の動作について説明する。
冷却ファン26が駆動することにより発生する冷却風は、グリル5、筐体吸気口8及び基板ケースユニット23の吸気口24を介して、本体1の外部から基板ケースユニット23へ流入する。基板ケースユニット23に流入した冷却風は、基板ケースユニット23内の電子回路基板17の被冷却物を冷却した後、排気口25を介してチャンバー19に流入する。
また、支持部材21及び弾性体22を減らせることにより、部品コスト及び組立コストが削減でき、製品コストの低い誘導加熱調理器とすることができる。
Claims (14)
- 被加熱物を載置するトッププレートと、
前記トッププレートの下方に設けられ、平面視において互いの中心位置が異なる複数の誘導加熱コイルと、
前記誘導加熱コイルを冷却する冷却風を供給する送風機と、
複数の前記誘導加熱コイルのそれぞれを保持する複数のコイル保持部材と、
前記コイル保持部材を支持する支持手段と、
を備え、
複数の前記コイル保持部材が、一体的に形成されて又は互いに固着されて単一のコイル保持体を構成することを特徴とする誘導加熱調理器。 - 前記支持手段と前記コイル保持体の間に介在して、前記コイル保持体に固定されるとともに前記支持手段により支持される被支持部材を備え、
前記被支持部材が、前記コイル保持体と一体的に形成されていることを特徴とする請求項1に記載の誘導加熱調理器。 - 前記支持手段による前記コイル保持体の支持箇所数が、前記誘導加熱コイルの数の3倍よりも少ないことを特徴とする請求項1又は請求項2に記載の誘導加熱調理器。
- 前記コイル保持体が、
平面視において
前記誘導加熱コイルのうちの少なくとも1つの前記誘導加熱コイルの中心部で支持されていることを特徴とする請求項1~請求項3のいずれか一項に記載の誘導加熱調理器。 - 前記支持手段による前記コイル保持体の支持箇所数が、少なくとも3つであり、
前記誘導加熱コイルの重心が、
平面視において、
前記支持手段による前記コイル保持体の支持箇所を結んだ多角形内に配置されていることを特徴とする請求項1~請求項4のいずれか一項に記載の誘導加熱調理器。 - 前記コイル保持体に開口部を形成したことを特徴とする請求項1~請求項5のいずれか一項に記載の誘導加熱調理器。
- 前記トッププレートと直接的又は間接的に接触し、前記誘導加熱コイルと前記トッププレートとの間隔を、少なくとも3箇所で所定の間隔に保つ間隔保持部材を備え、
該間隔保持部材と前記コイル保持体とが、一体的に形成されたことを特徴とする請求項1~請求項6のいずれか一項に記載の誘導加熱調理器。 - 前記間隔保持部材による間隔保持箇所が、
前記支持手段による支持箇所と平面視において略同一となる位置に形成されていることを特徴とする請求項7に記載の誘導加熱調理器。 - 前記コイル保持体に支持されるとともに、前記誘導加熱コイルの下方となる位置に配置され、前記誘導加熱コイルの磁束の下方への漏れを抑制するフェライトを備え、
該フェライトが、
平面視において、前記誘導加熱コイルの中心から放射状に配置されていることを特徴とする請求項1~請求項8のいずれか一項に記載の誘導加熱調理器。 - 前記誘導加熱コイルにより過熱される鍋等の被加熱体の温度を検知する温度センサと、
該温度センサを支持する温度センサ支持手段と、
を備え、
前記コイル保持体が、温度センサ支持手段と一体的に形成されたことを特徴とする請求項1~請求項9のいずれか一項に記載の誘導加熱調理器。 - 前記コイル保持体に支持され、前記誘導加熱コイルからの磁束漏れを抑制する防磁リングと、
前記防磁リングを前記コイル保持体に係止する防磁リング係止部材と、
を備え、
前記コイル保持体と防磁リング係止部材とが一体的に形成されたことを特徴とする請求項1~請求項10のいずれか一項に記載の誘導加熱調理器。 - 前記複数の前記誘導加熱コイルが、単一の防磁リングにより取り囲まれたことを特徴とする請求項11に記載の誘導加熱調理器。
- 前記誘導加熱コイルをコイル保持体に位置決めする位置決め部材を備え、
前記コイル保持体と前記位置決め部材とが一体的に形成されたことを特徴とする請求項1~請求項12のいずれか一項に記載の誘導加熱調理器。 - 前記冷却風を吹き出す吹出口と、
前記冷却風を排気する排気口と、
を備え、
前記コイル保持体を支持する支持手段のうちの少なくとも1つが、
前記吹出口の外周部と、前記排気口の外周部と、を結ぶ領域外に配置されていることを特徴とする請求項1~請求項13のいずれか一項に記載の誘導加熱調理器。
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WO2012117679A1 (ja) * | 2011-02-28 | 2012-09-07 | 三菱電機株式会社 | 加熱調理器 |
CN103460796A (zh) * | 2011-03-29 | 2013-12-18 | 三菱电机株式会社 | 感应加热烹调器 |
EP2693837A1 (en) * | 2011-03-29 | 2014-02-05 | Mitsubishi Electric Corporation | Induction heating cookware |
US9603202B2 (en) | 2014-08-22 | 2017-03-21 | Haier Us Appliance Solutions, Inc. | Induction cooking appliance and method for assembling same |
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WO2012140886A1 (ja) * | 2011-04-15 | 2012-10-18 | 三菱電機株式会社 | 誘導加熱コイル、及び、この誘導加熱コイルを用いた誘導加熱調理器 |
JP5047379B1 (ja) * | 2011-05-18 | 2012-10-10 | 三菱電機株式会社 | 誘導加熱調理器 |
JP5389114B2 (ja) * | 2011-08-10 | 2014-01-15 | 三菱電機株式会社 | 誘導加熱調理器 |
JP5330586B1 (ja) * | 2012-11-02 | 2013-10-30 | 三菱電機株式会社 | 誘導加熱調理器 |
DE102013102116A1 (de) * | 2013-03-04 | 2014-09-18 | Miele & Cie. Kg | Kocheinrichtung |
KR102075568B1 (ko) * | 2014-08-27 | 2020-02-11 | (주)쿠첸 | 인덕션 렌지의 온도퓨즈 장착구조체 |
CN107734731B (zh) * | 2016-08-10 | 2024-06-07 | 佛山市顺德区美的电热电器制造有限公司 | 磁条支架、发热组件和烹饪器具 |
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