Induction heating conditioner

Abstract

To dispose a heating coil unit inside a housing located under a top plate in an induction heating cooker, while preventing degradation in layout flexibility of other components.SOLUTION: An induction heating cooker 10 has: a top plate; a housing 12 disposed under the top plate; a heating coil unit 22A which induction-heats a heating object on the top plate; first and second biasing members 46, 48 which support the heating coil unit 22A at two points; and first and second contact members 66, 68 which are provided on one of the top plate and the heating coil unit 22A, and come into contact with the other one of them, thereby forming a space between the top plate and the heating coil unit 22A. In upward view, the first and second contact members 66, 68 are disposed such that a first straight line, connecting the first biasing member 46 and the second biasing member 48, and a straight line, connecting the first contact member 66 and the second contact member 68, intersect each other on the heating coil unit 22A.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an induction cooker. [Background technology]

[0002] Patent Document 1 discloses an induction heating cooker having a heating coil unit that inductively heats a heating object, such as a cooking container, placed on a top plate from below the top plate. The heating coil unit is arranged in a housing located below the top plate and is supported at three points. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-2423 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the induction heating cooker of Patent Document 1, it is necessary to provide support members inside the housing to support the heating coil unit at three points, and these three support members reduce the degree of freedom in the layout of other components inside the housing.

[0005] Therefore, the objective of the present disclosure is to provide an induction heating cooker that inductively heats an object to be heated placed on a top plate, with a heating coil unit disposed within a housing located below the top plate while minimizing a reduction in the degree of freedom in the layout of other components. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, according to one aspect of the present disclosure, The top plate and a housing disposed below the top plate; a heating coil unit provided within the housing for induction heating a heating target placed on the top plate; first and second biasing members provided within the housing and supporting the heating coil unit at two points while biasing the heating coil unit toward the top plate; first and second contact members provided on one of the top plate and the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit; An induction heating cooker is provided in which, when viewed from above, the first and second contact members are arranged so that a first line connecting the first biasing member and the second biasing member and a line connecting the first contact member and the second contact member intersect on the heating coil unit.

[0007] According to another aspect of the present disclosure, The top plate and a housing disposed below the top plate; a heating coil unit provided within the housing for induction heating a heating target placed on the top plate; first and second biasing members provided within the housing and supporting the heating coil unit at two points while biasing the heating coil unit toward the top plate; a contact member provided on one of the top plate and the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit, An induction heating cooker is provided in which the contact member is positioned so that, when viewed from above, a straight line connecting the first and second biasing members and a straight line connecting the contact member and the center of gravity of the heating coil unit intersect on the heating coil unit. [Effects of the Invention]

[0008] According to the present disclosure, in an induction heating cooker that inductively heats an object to be heated placed on a top plate, the heating coil unit can be provided within a housing located below the top plate while minimizing reduction in the degree of freedom in layout of other components. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an induction heating cooker according to an embodiment of the present disclosure; [Figure 2] An exploded perspective view of an induction cooker showing the inside of the housing [Figure 3] FIG. 1 is an exploded perspective view showing a state in which the heating coil unit is removed from the housing. [Figure 4] Exploded perspective view of the heating coil unit [Figure 5] FIG. 1 is a perspective view showing the bottom surface of a heating coil unit; [Figure 6] An exploded perspective view showing the internal components removed from the housing. [Figure 7] An exploded perspective view of the cooling unit with its internal components. [Figure 8] Bottom perspective view of the cooling unit [Figure 9] Cooling unit bottom view [Figure 10] A side view showing the heating coil unit in a state close to the top plate. [Figure 11] Top view of the heating coil unit [Figure 12] FIG. 10 is a schematic top view of a heating coil unit in an induction heating cooker according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] A heating cooker according to one embodiment of the present disclosure comprises a top plate, a housing arranged below the top plate, a heating coil unit provided within the housing for induction heating of a heating object placed on the top plate, first and second biasing members provided within the housing for supporting the heating coil unit at two points while biasing it toward the top plate, and first and second contact members provided on one of the top plate and the heating coil unit and contacting the other to form a space between the top plate and the heating coil unit, and the first and second contact members are arranged so that, when viewed from above, a first straight line connecting the first biasing member and the second biasing member and a straight line connecting the first contact member and the second contact member intersect on the heating coil unit.

[0011] According to this aspect, in an induction heating cooker that inductively heats an object to be heated placed on a top plate, the heating coil unit can be provided within a housing located below the top plate while minimizing a reduction in the degree of freedom in the layout of other components.

[0012] For example, the first and second biasing members may be arranged so that the first straight line passes through the center of the heating coil unit when viewed from above.

[0013] For example, the induction cooking appliance may further include third and fourth contact members provided on one of the top plate and the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit. In this case, the third and fourth contact members are arranged such that a third line connecting the third and fourth contact members intersects with the first line on the heating coil unit when viewed from above.

[0014] For example, the third and fourth contact members may be disposed closer to the first and second biasing members than the first and second contact members when viewed from above.

[0015] For example, the induction cooking appliance may further include a first biasing member support portion that supports the first biasing member and is provided near a side wall of the housing.

[0016] For example, the induction cooking appliance may further include a circuit board disposed within the housing below the heating coil unit, and an inner case disposed within the housing for supporting the circuit board, in which case the first biasing member support portion may be provided on the inner case.

[0017] For example, the induction heating cooker may further include a fan that draws external air into the housing, a duct member that guides the drawn air to the heat-generating components on the board, and a second biasing member support portion that is provided on the upper surface of the duct member and supports the second biasing member.

[0018] For example, a rib may be provided on a portion of the lower surface of the duct member located below the second biasing member support portion.

[0019] In addition, an induction heating cooker according to another aspect of the present disclosure includes a top plate, a housing arranged below the top plate, a heating coil unit provided within the housing for induction heating an object to be heated placed on the top plate, first and second biasing members provided within the housing for supporting the heating coil unit at two points while biasing the heating coil unit toward the top plate, and a contact member provided on one of the top plate and the heating coil unit and contacting the other to form a space between the top plate and the heating coil unit, and the contact member is arranged so that, when viewed from above, a straight line connecting the first biasing member and the second biasing member and a straight line connecting the contact member and the center of gravity of the heating coil unit intersect on the heating coil unit.

[0020] According to this aspect, in an induction heating cooker that inductively heats an object to be heated placed on a top plate, the heating coil unit can be provided within a housing located below the top plate while minimizing a reduction in the degree of freedom in the layout of other components.

[0021] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0022] Fig. 1 is a perspective view of an induction heating cooker according to an embodiment of the present disclosure. Fig. 2 is an exploded perspective view of the induction heating cooker showing the interior of the housing. Fig. 3 is an exploded perspective view showing a state in which a heating coil unit has been removed from the housing. Note that the XYZ Cartesian coordinate system shown in the figures is intended to facilitate understanding of the embodiment of the present disclosure and does not limit the embodiment of the present disclosure. The X-axis direction indicates the front-rear direction of the induction heating cooker, the Y-axis direction indicates the left-right direction, and the Z-axis direction indicates the height direction.

[0023] As shown in FIGS. 1 to 3, an induction heating cooker 10 according to this embodiment has a housing 12 and a top plate unit 14 arranged above the housing 12.

[0024] 2 and 3, the housing 12 of the induction cooking device 10 is a metal housing that is open at the top. The housing 12 is disposed below the top plate unit 14 and supports the top plate unit 14 from below.

[0025] The top plate unit 14 includes a top plate 16 on which an object to be heated, such as a cooking container, is placed, and a top frame 18 that supports the top plate 16. The top plate 16 is a plate-shaped member made of, for example, heat-resistant glass. The top frame 18 is a frame-shaped member that supports the top plate 16 and is supported by the housing 12. An operation unit 20 is provided in the front portion of the top frame 18. An exhaust port 18a is provided in the rear portion of the top frame 18 to exhaust air from inside the housing 12 to the outside.

[0026] The induction heating cooker 10 also has a plurality of heating coil units 22A, 22B, 24 that inductively heat an object to be heated placed on the top plate 16 of the top plate unit 14.

[0027] Heating coil units 22A, 22B, and 24 are disposed within housing 12. Each of heating coil units 22A, 22B, and 24 inductively heats a heating target placed above it on top plate 16. Heating coil units 22A and 22B are identical units. Heating coil unit 24 has substantially the same configuration as heating coil units 22A and 22B, except for its size.

[0028] FIG. 4 is an exploded perspective view of the heating coil unit.

[0029] As shown in FIG. 4, the heating coil units 22A and 22B are configured by stacking a plurality of components.

[0030] In this embodiment, heating coil units 22A and 22B include a coil base 30 made of a resin material or the like, a magnetic shielding plate 32 supported by coil base 30, a plurality of ferrites 34 arranged on magnetic shielding plate 32, an insulating plate 36 arranged on the plurality of ferrites 34, a heating coil 38 placed on insulating plate 36, and an insulating plate 40 placed on heating coil 38. In this embodiment, heating coil units 22A and 22B also include an infrared sensor 42 that detects infrared rays radiated from the heating target, and a temperature sensor 44 that contacts top plate 16 and detects the temperature of top plate 16. A controller (not shown) of induction heating cooker 10 calculates the temperature of the heating target based on the detection results of infrared sensor 42 and temperature sensor 44, and adjusts the output of heating coil 38 based on the calculated temperature.

[0031] 3, the heating coil unit 22A is supported via two coil springs 46 and 48 (biasing members) within the housing 12. The heating coil unit 22B is also supported via two coil springs 50 and 52. That is, each of the heating coil units 22A and 22B is supported at two points.

[0032] FIG. 5 is a perspective view showing the bottom surface of the heating coil unit.

[0033] 5, in this embodiment, coil springs 46, 48, 50, and 52 that support the heating coil units 22A and 22B at two points urge the heating coil units 22A and 22B toward the top plate 16. Note that the coil base 30 of each of the heating coil units 22A and 22B is formed with a recess 30a that accommodates the coil springs 46, 48, 50, and 52, respectively.

[0034] As shown in FIG. 3, spring retainers 56b, 56c, 62a, and 62b (biasing member support portions) that support the plurality of coil springs 46, 48, 50, and 52, respectively, are provided within the housing 12.

[0035] Fig. 6 shows the state in which the internal components have been removed from the housing. Fig. 7 is an exploded perspective view of the cooling unit in the internal components. Fig. 8 is a bottom perspective view of the cooling unit. And Fig. 9 is a bottom view of the cooling unit.

[0036] In this embodiment, the spring retainer is configured as a part of the internal components housed within the housing 12 .

[0037] Specifically, a circuit board 54 is provided within the housing 12 and is electrically connected to the heating coils 38, infrared sensor 42, and temperature sensor 44 of the heating coil units 22A and 22B, and to the operation unit 20. The circuit board 54 is disposed below the heating coil units 22A, 22B, and 24. The circuit board 54 is also provided within the housing 12 and supported by a tray-shaped inner case 56 made of an insulating material such as a resin material. Spring retainers 56b and 56c are provided on a wall 56a of the inner case 56 that extends toward the top plate unit 14 and surrounds the circuit board 54. The spring retainer is composed of, for example, a shaft portion that passes through the coil spring and a seating portion on which the end of the coil spring sits.

[0038] Specifically, a spring retainer 56b supporting the coil spring 46 that supports the left portion of one heating coil unit 22A is integrally provided on a wall 56a of the inner case 56 located near the left wall of the housing 12. The wall 56a, which is integral with the spring retainer 56b, is fixed to the wall of the housing 12 with screws or the like. This allows the housing 12 to bear the load of the heating coil unit 22A that the spring retainer 56b receives via the coil spring 52. This prevents deformation of the spring retainer 56b. Furthermore, a spring retainer 56c supporting the coil spring 52 that supports the right portion of the other heating coil unit 22B is integrally provided on a wall 56a of the inner case 56 located near the right wall of the housing 12. This allows the housing 12 to bear the load of the heating coil unit 22B that the spring retainer 56c receives via the coil spring 52. This prevents deformation of the spring retainer 56c.

[0039] In this embodiment, the spring retainers that support the remaining coil springs 48, 50 are provided in the cooling unit 58. The cooling unit 58 is a unit that cools the heat-generating components on the substrate .

[0040] Cooling unit 58 includes a fan 60 that draws external air into housing 12, and a duct member 62 that guides the drawn air to heat-generating components on board 54. Through-holes 12a, 56d through which air drawn by fan 60 passes are formed in the bottom surface of housing 12 and the opposing portion of inner case 56, respectively. Fan 60 is disposed above through-hole 56d in inner case 56 so as to be rotatable about a rotation center line that extends in the height direction (Z-axis direction).

[0041] Duct member 62 of cooling unit 58 is placed on substrate 54 and covers the heat-generating components on substrate 54 that are to be cooled. In the present embodiment, a heat sink 64 is attached to each of the plurality of heat-generating components, and duct member 62 covers heat sink 64. Duct member 62 guides air from fan 60 to heat sink 64, cooling the heat-generating components to which heat sink 64 is attached.

[0042] In this embodiment, a spring retainer 62a that supports the coil spring 48 that supports the right portion of one heating coil unit 22A is integrally provided on the upper surface of a duct member 62 of the cooling unit 58. In addition, a spring retainer 62b that supports the coil spring 50 that supports the left portion of the other heating coil unit 22B is integrally provided on the upper surface of the duct member 62.

[0043] The spring retainers 62a, 62b are subjected to the load of the heating coil units 22A, 22B via the coil springs 48, 50. In order to suppress deformation due to the load, ribs 62c, 62d are provided on the lower surface of the duct member 62 below the spring retainers 62a, 62b, as shown in FIGS. 8 and 9. These ribs 62c, 62d suppress deformation of the duct member 62 due to the load of the heating coil units 22A, 22B. In order to further suppress deformation of the duct member 62, the ribs 62c, 62d may extend from the lower surface of the duct member 62 to the substrate 54. These ribs 62c, 62d also function as guide plates that guide air from the fan 60 to heat-generating components (i.e., the heat sink 64) on the substrate 54.

[0044] At least a portion of the spring retainers that support the coil springs 46, 48, 50, and 52 that support the heating coil units 22A and 22B may be provided directly on the housing 12.

[0045] These coil springs 46, 48, 50, and 52 maintain the heating coil units 22A, 22B in close proximity to the top plate 16 of the top plate unit 14.

[0046] FIG. 10 is a side view showing the heating coil unit in a state where it is close to the top plate.

[0047] As shown in Fig. 6, a space S of a predetermined thickness (height dimension) is formed between the heating coil units 22A and 22B, which are biased by coil springs 46, 48, 50, and 52, and the top plate 16. In other words, the space S is an insulating layer of air. This space S limits the transfer of heat from the heating coil units 22A and 22B to the top plate 16. Furthermore, air flowing through this space S cools the top plate 16 and the heating coil units 22A and 22B.

[0048] To form such a space S, in this embodiment, a plurality of contact members 66, 68, 70, and 72 that come into contact with the top plate 16 are provided on the coil base 30 of each of the heating coil units 22A and 22B. The plurality of contact members 66, 68, 70, and 72 are arranged to surround the heating coil 38 when viewed from above (when viewed in the Z-axis direction). The plurality of contact members 66, 68, 70, and 72 are made of, for example, a resin material with high heat resistance.

[0049] Furthermore, the contact members 66, 68, 70, and 72 are provided on the coil base 30 so that the top surfaces 66a, 68a, 70a, and 72a that contact the top plate 16 are positioned higher than the topmost portions of the heating coil units 22A and 22B (insulating plate 40 in this embodiment). Therefore, when the heating coil units 22A and 22B are biased by the coil springs 46, 48, 50, and 52, the top surfaces 66a, 68a, 70a, and 72a of the contact members 66, 68, 70, and 72 come into contact with the top plate 16, but the topmost portions of the heating coil units 22A and 22B cannot come into contact with the top plate 16. As a result, a space S of a predetermined thickness is formed between the top plate 16 and the heating coil units 22A and 22B.

[0050] As shown in FIG. 3, heating coil unit 22A is supported by two coil springs 46, 48. Similarly, heating coil unit 22B is supported by two coil springs 50, 52. That is, heating coil units 22A, 22B are each supported at two points. Therefore, heating coil units 22A, 22B are unstable and prone to swinging. This swinging is suppressed by contact members 66, 68, 70, and 72. The method for suppressing swinging of heating coil units 22A, 22B, which are supported at two points, is the same. Therefore, only the swinging suppression method for heating coil unit 22A will be described.

[0051] FIG. 11 is a top view of the heating coil unit.

[0052] 11, the heating coil unit 22A is supported at two points by the coil springs 46, 48. Therefore, the heating coil unit 22A tends to swing around a straight line L1 (first straight line) connecting the coil springs 46, 48 when viewed from above (when viewed in the Z-axis direction). To suppress this swing, multiple contact members 66, 68, 70, and 72 come into contact with the top plate 16. For this reason, the multiple contact members 66, 68, 70, and 72 are arranged at positions that can suppress swing of the heating coil unit 22A around the straight line L1 when viewed from above.

[0053] For example, when viewed from above (when viewed in the Z-axis direction), the contact members 66, 68 are provided on the coil base 30 of the heating coil unit 22A so that a straight line L2 (second straight line) connecting the multiple contact members 66, 68 intersects with a straight line L1 connecting the coil springs 46, 48 on the heating coil unit 22A. Furthermore, when viewed from above, the contact members 70, 72 are provided on the coil base 30 so that a straight line L3 (third straight line) connecting the multiple contact members 70, 72 intersects with the straight line L1 on the heating coil unit 22A.

[0054] The multiple contact members 66, 68, 70, and 72 arranged in this manner prevent the heating coil unit 22A from substantially swinging about the straight line L1. Specifically, swinging of the heating coil unit 22A such that the portion 22Aa behind the straight line L1 approaches the top plate 16 is limited because the contact members 66 and 70 are in contact with the top plate 16. Swinging of the heating coil unit 22A such that the portion 22Ab in front of the straight line L1 approaches the top plate 16 is also limited because the contact members 68 and 72 are in contact with the top plate 16. As a result, swinging of the heating coil unit 22A about the straight line L1 is suppressed.

[0055] The contact members 70 and 72 not only suppress oscillation of the heating coil unit 22A around the line L1, but also suppress deformation of the heating coil unit 22A. Specifically, because the contact members 66 and 68 contact the top plate 16, deformation of the heating coil unit 22A over time may occur, in which the portions of the heating coil unit 22A biased by the coil springs 46 and 48 move closer to the top plate 16. This can occur because the contact members 66 and 68 are spaced apart from the coil springs 46 and 48 when viewed from above (as viewed in the Z-axis direction) in order to suppress oscillation of the heating coil unit 22A around the line L1. To suppress such deformation of the heating coil unit 22A, the contact members 70 and 72 are positioned closer to the coil springs 46 and 48 than the contact members 66 and 68 when viewed from above. The contact members 70, 72 near the coil springs 46, 48 are in contact with the top plate 16, so that the portion of the heating coil unit 22A biased by the coil springs 46, 48 is prevented from being displaced toward the top plate 16.

[0056] From another perspective, if the heating coil unit 22A, in which the contact members 66, 68 farther from the coil springs 46, 48 are in contact with the top plate 16, has sufficient rigidity so as not to deform when pressed by the coil springs 46, 48, the contact members 70, 72 can be omitted.

[0057] 11, when viewed from above (viewed in the Z-axis direction), the coil springs 46, 48 are preferably arranged so that the straight line L1 passes through the center C of the heating coil unit 22A. The center C is the geometric center of the heating coil unit 22A, and is, for example, the center of a circle with the smallest area that includes the heating coil unit 22A.

[0058] If the line L1 deviates significantly from the center C of the heating coil unit 22A, a large difference in the contact pressure of each of the contact members 66, 68, 70, and 72 against the top plate 16 may occur. In some cases, a gap may develop between one contact member and the top plate over time. As a result, the thickness (size in the Z-axis direction) of the space S between the top plate 16 and the heating coil unit 22A may become uneven, potentially reducing the insulating effect of the space S (air layer) and the cooling effect of the air flowing through the space S. Alternatively, if the thickness of the space S between the top plate 16 and the heating coil unit 22A becomes uneven, the distance between the heating coil unit 22A and the cooking vessel (e.g., a pot) on the top plate 16 may become uneven, resulting in uneven magnetic flux density passing through the cooking vessel and potentially resulting in uneven heating of the cooking vessel.

[0059] According to the present embodiment as described above, in the induction heating cooker 10 that induction heats an object to be heated placed on the top plate 16, the heating coil units 22A, 22B can be provided in the housing 12 arranged below the top plate 16 while suppressing a reduction in the degree of freedom in the layout of the other components. In other words, the degree of freedom in the layout of the other components is improved compared to when the heating coil units 22A, 22B are supported at three points.

[0060] Although the present disclosure has been described above with reference to the above-mentioned embodiments, the present disclosure is not limited to the above-mentioned embodiments.

[0061] For example, in the above-described embodiment, the biasing members that bias the heating coil units 22A, 22B toward the top plate 16 are the coil springs 46, 48, 50, and 52 as shown in Fig. 3, but the embodiments of the present disclosure are not limited to this. That is, the biasing members are not limited to coil springs as long as they can maintain contact between the contact members 66, 68, 70, and 72 of the heating coil units 22A, 22B and the top plate 16.

[0062] In the above-described embodiment, as shown in Fig. 10, the contact members 66, 68, 70, and 72 that form the space S between the top plate 16 and the heating coil units 22A and 22B are provided on the heating coil units 22A and 22B. However, the embodiment of the present disclosure is not limited to this. At least a portion of the contact members may be provided on the top plate.

[0063] Furthermore, in the above-described embodiment, as shown in FIG. 10, multiple contact members 66, 68, 70, and 72 contact the top plate 16, thereby suppressing the oscillation of the heating coil units 22A and 22B. However, the components that suppress the oscillation of the heating coil units 22A and 22B are not limited to the contact members. For example, as shown in FIG. 10, a temperature sensor 44 that detects the temperature of the top plate 16 contacts the top plate 16. Therefore, the temperature sensor 44 can be used as a contact member for suppressing the oscillation of the heating coil units 22A and 22B.

[0064] Furthermore, in the above-described embodiment, as shown in Fig. 11, four contact members 66, 68, 70, and 72 are used to suppress oscillation of the heating coil unit 22A around the line L1 connecting the coil springs 46 and 48 when viewed from above (as viewed in the Z-axis direction). However, the embodiments of the present disclosure are not limited to this. It is possible to suppress oscillation of the heating coil unit with just one contact member.

[0065] FIG. 12 is a schematic top view of a heating coil unit in an induction heating cooker according to another embodiment.

[0066] As shown in FIG. 12 , a heating coil unit 122 in an induction cooking appliance according to another embodiment is supported at two points by two coil springs 146 and 148, similar to the above-described embodiment. Furthermore, one contact member 166 is provided on the heating coil unit 122. The one contact member 166 is disposed so that, when viewed from above (as viewed in the Z-axis direction), a line L4 connecting the coil springs 146 and 148 intersects with a line L5 connecting the contact member 166 and the center of gravity G of the heating coil unit 122 on the heating coil unit 122. The one contact member 166 disposed in this manner can also suppress oscillation of the heating coil unit 122 about the line L5. Specifically, because the contact member 166 is in contact with the top plate, oscillation of the heating coil unit 122, which would otherwise occur when a portion 122a of the heating coil unit 122 behind the line L4 approaches the top plate, is suppressed.

[0067] That is, an induction heating cooker according to an embodiment of the present disclosure is, in a broad sense, an induction heating cooker having a top plate, a housing arranged below the top plate, a heating coil unit provided within the housing for induction heating a heating object placed on the top plate, first and second biasing members provided within the housing for supporting the heating coil unit at two points while biasing it toward the top plate, and first and second contact members provided on one of the top plate and the heating coil unit and contacting the other to form a space between the top plate and the heating coil unit, wherein the first and second contact members are arranged so that, when viewed from above, a first straight line connecting the first biasing member and the second biasing member and a straight line connecting the first contact member and the second contact member intersect on the heating coil unit.

[0068] Furthermore, an induction heating cooker according to another embodiment of the present disclosure is, in a broad sense, an induction heating cooker having a top plate, a housing arranged below the top plate, a heating coil unit provided within the housing for induction heating a heating object placed on the top plate, first and second biasing members provided within the housing for supporting the heating coil unit at two points while biasing the heating coil unit toward the top plate, and a contact member provided on one of the top plate and the heating coil unit and contacting the other to form a space between the top plate and the heating coil unit, wherein the contact member is arranged so that, when viewed from above, a straight line connecting the first biasing member and the second biasing member and a straight line connecting the contact member and the center of gravity of the heating coil unit intersect on the heating coil unit. [Industrial Applicability]

[0069] The present disclosure is applicable to an induction heating cooker that is provided with a heating coil that is disposed below a top plate and that inductively heats a heating object, such as a cooking container, on the top plate. [Explanation of symbols]

[0070] 10 induction cooker 12. Cabinet 22A heating coil unit 46 First biasing member (coil spring) 48 Second biasing member (coil spring) 66 first contact member 68 second contact member S Space

Claims

1. The top plate and a housing disposed below the top plate; a heating coil unit provided within the housing for induction heating a heating target placed on the top plate; first and second biasing members provided within the housing and configured to bias the heating coil unit toward the top plate and support the heating coil unit at two points; first and second contact members provided on one of the top plate and the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit; an induction heating cooker, wherein the first and second contact members are arranged so that, when viewed from above, a first line connecting the first biasing member and the second biasing member and a line connecting the first contact member and the second contact member intersect on the heating coil unit.

2. The induction heating cooker according to claim 1 , wherein the first and second biasing members are arranged so that the first straight line passes through a center of the heating coil unit when viewed from above.

3. the heating coil unit and the top plate, and a third and fourth contact members provided on either the top plate or the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit; 2. The induction heating cooker according to claim 1, wherein the third and fourth contact members are arranged such that, when viewed from above, a third line connecting the third contact member and the fourth contact member intersects with the first line on the heating coil unit.

4. 4. The induction heating cooker according to claim 3, wherein the third and fourth contact members are arranged closer to the first and second biasing members than the first and second contact members are when viewed from above.

5. The induction heating cooker according to claim 1 , further comprising a first biasing member support portion that supports the first biasing member and is provided near a side wall of the housing.

6. a substrate provided within the housing and disposed below the heating coil unit; an inner case provided within the housing and supporting the substrate; The induction heating cooker according to claim 5 , wherein the first biasing member support portion is provided on the inner case.

7. a fan that draws external air into the housing; a duct member that guides the sucked air to the heat-generating components on the board; The induction heating cooker according to claim 1 , further comprising: a second biasing member support portion provided on an upper surface of the duct member and supporting the second biasing member.

8. The induction heating cooker according to claim 7 , wherein a rib is provided on a portion of the lower surface of the duct member located below the second biasing member support portion.

9. The top plate and a housing disposed below the top plate; a heating coil unit provided within the housing for induction heating a heating target placed on the top plate; first and second biasing members provided within the housing and configured to bias the heating coil unit toward the top plate and support the heating coil unit at two points; a contact member provided on one of the top plate and the heating coil unit and in contact with the other to form a space between the top plate and the heating coil unit, an induction heating cooker, wherein the contact member is positioned such that, when viewed from above, a line connecting the first urging member and the second urging member and a line connecting the contact member and the center of gravity of the heating coil unit intersect on the heating coil unit.

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