Heating cooker

Abstract

To provide a heating cooker which secures a high heat discharge property while attaining a small thickness.SOLUTION: A heating cooker 10 includes: a top plate; a housing 14 supporting the top plate and having a suction port 14b in one end thereof in a first direction; heating coils 24A and 24B arranged in the housing 14; a control substrate 22 arranged below the heating coils 24A and 24B; and operational units 20A and 20B arranged between the suction port 14b and the control substrate 22. The control substrate 22 includes: a plurality of heat generation parts 30, 32, and 34; and first and second heat sinks 40, 42, and 44 thermally connected to the heat generation parts 30, 32, and 34. The first heat sink 44 is located between the heating coils 24A and 24B and the operational units 20A and 20B. The second heat sinks 40, 42 extend to the suction port 14b in a first direction so that parts of the heat sinks are adjacent to the operational units 20A and 20B in a second direction perpendicular to the first direction.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a cooking appliance. [Background technology]

[0002] Conventionally, there has been known a cooking device that uses a heating coil to inductively heat a cooking vessel such as a pan placed on a top plate, as described in Patent Document 1. The cooking device described in Patent Document 1 is made thin by arranging the heating coil and an inverter in parallel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-280744 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a demand for cooking appliances to be thinner. However, the thinner the appliance, the higher the temperature inside the appliance. Therefore, the cooking appliance needs to be thinner while still ensuring high heat dissipation performance.

[0005] Therefore, an object of the present disclosure is to ensure high heat dissipation performance while realizing a thin cooking device. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, according to one aspect of the present disclosure, A top plate on which a heating target is placed; a housing that supports the top plate and has an air intake port at one end in a first direction; a heating coil disposed within the housing and below the top plate; A control board disposed within the housing and below the heating coil; an operation unit disposed within the housing and between the intake port and the control board; the control board includes a plurality of heat generating components and first and second heat sinks thermally connected to the heat generating components, the first heat sink is located between the heating coil and the operation unit; A cooking appliance is provided in which the second heat sink extends in the first direction toward the air intake so that a portion of the second heat sink is adjacent to the operating unit in a second direction perpendicular to the first direction. Effect of the Invention

[0007] According to the present disclosure, in a cooking device, it is possible to ensure high heat dissipation performance while realizing a thin design. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a cooking device according to a first embodiment of the present disclosure; [Diagram 2] Side view of a cooking appliance installed on a kitchen countertop [Diagram 3] FIG. 1 is a perspective view of a cooking device without a top plate; [Figure 4] Top view of the cooker without the top plate [Diagram 5] FIG. 1 is an exploded perspective view of a cooking device without a top plate. [Figure 6] FIG. 13 is an exploded perspective view of a cooking device according to a second embodiment of the present disclosure, with the top plate removed; [Figure 7] FIG. 1 is a perspective view of a cooking device without a top plate; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A heating cooker according to one embodiment of the present disclosure includes a top plate on which an object to be heated is placed, a housing supporting the top plate and having an air intake at one end in a first direction, a heating coil arranged within the housing and below the top plate, a control board arranged within the housing and below the heating coil, and an operation unit arranged within the housing and between the air intake and the control board, wherein the control board includes a plurality of heat-generating components and first and second heat sinks thermally connected to each of the heat-generating components, the first heat sink is located between the heating coil and the operation unit, and the second heat sink extends in the first direction toward the air intake so that a portion of the heat-generating components is adjacent to the operation unit in a second direction perpendicular to the first direction.

[0010] According to one aspect of the present disclosure, in a cooking device, it is possible to ensure high heat dissipation performance while realizing a thin design.

[0011] For example, the plurality of heat generating components may be provided at an end of the control board on the side of the intake port, and the first and second heat sinks may be in contact with upper surfaces of the heat generating components.

[0012] For example, the first and second heat sinks may extend from the heat generating component towards the air inlet.

[0013] For example, the cooking appliance may further include an intake fan that is provided between each of the first and second heat sinks and the air intake port, draws in air from the outside through the air intake port, and blows the drawn-in air toward the first and second heat sinks.

[0014] For example, the cooking appliance may further include a guide member that covers the intake fan and the first and second heat sinks and guides the air blown out from the intake fan to the first and second heat sinks.

[0015] For example, the housing may include an exhaust port at the other end in the first direction.

[0016] For example, the cooking appliance may further include an exhaust fan that is provided between the control board and the exhaust port, and that draws in air within the housing and blows the drawn air out toward the exhaust port.

[0017] For example, the cooking appliance may further include a filter circuit that electrically connects the control board and an external power supply, and the filter circuit may be located outside the housing.

[0018] For example, the first direction may be a front-to-rear direction of the cooking appliance.

[0019] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0020] (Embodiment 1) Fig. 1 is a perspective view of a cooking device according to a first embodiment of the present disclosure. Fig. 2 is a side view of the cooking device attached to a worktop of a kitchen counter. Fig. 3 is a perspective view of the cooking device with the top plate removed. Fig. 4 is a top view of the cooking device with the top plate removed. And Fig. 5 is an exploded perspective view of the cooking device with the top plate removed.

[0021] As shown in Figs. 1 and 2, in the case of the present embodiment 1, a cooking device 10 is a so-called built-in type induction cooking device that is attached to a work top WT of a kitchen counter KC when used.

[0022] 2, the cooking device 10 has a top plate 12 on which a cooking vessel such as a pan to be heated is placed, a housing 14 that supports the top plate 12, and a power cable 16 for electrically connecting to an external power source such as a commercial power source. The top plate 12 of the cooking device 10 is placed on a worktop WT, and the housing 14 is placed in a through hole H formed in the worktop WT. The power cable 16 is connected to an outlet (not shown) provided in a kitchen counter KC.

[0023] The top plate 12 is made of, for example, heat-resistant glass, and a cooking vessel to be heated, such as a pan, is placed on the top surface of the top plate.

[0024] The housing 14 is made, for example, from a metallic material and houses therein several components for inductively heating a cooking vessel on the top plate 12 .

[0025] The housing 14 also has an intake port at its front end. Specifically, in the case of the present embodiment 1, as shown in Fig. 1, Fig. 3, and Fig. 5, the housing 14 has an intake port 14a consisting of a number of holes that open toward the front, and as shown in Fig. 4, an intake port 14b consisting of a number of holes that open toward the bottom.

[0026] Furthermore, in the present embodiment 1, the housing 14 has an exhaust port at the rear end. Specifically, as shown in Fig. 1, Fig. 3, and Fig. 4, the housing 14 has an exhaust port 14c consisting of a number of holes that open upward, and as shown in Fig. 5, an exhaust port 14d consisting of a number of holes that open backward.

[0027] 2, external air A flows into the housing 14 through the intake ports 14a and 14b. The air A inside the housing 14 flows out through the exhaust ports 14c and 14d. This flow of air A causes heat generated inside the housing 14 to be discharged to the outside.

[0028] As shown in FIGS. 3 to 5, cooking device 10 has, in housing 14, coil units 18A, 18B, operation units 20A, 20B for allowing a user to operate coil units 18A, 18B, respectively, and a control board 22.

[0029] The coil units 18A and 18B include heating coils 24A and 24B and coil bases 26A and 26B. In the case of the first embodiment, the coil units 18A and 18B are arranged in the housing 14 in a state of being aligned in the left-right direction of the cooking device 10. The coil units 18A and 18B are also arranged in the housing 14 such that the heating coils 24A and 24B are arranged below the top plate 12 and face the lower surface of the top plate 12 with a gap therebetween. This allows the heating coils 24A and 24B of the coil units 18A and 18B to inductively heat a cooking vessel placed on the portion of the top plate 12 above them.

[0030] Coil bases 26A, 26B of coil units 18A, 18B support heating coils 24A, 24B, and are disposed above control board 22, facing control board 22 with a gap therebetween. In addition to heating coils 24A, 24B, coil bases 26A, 26B are provided with an infrared sensor for detecting the temperature of a cooking vessel above them.

[0031] Operation unit 20A is a unit for allowing a user to operate heating coil 24A of coil unit 18A, and in the case of the present embodiment 1, is disposed in front of coil unit 18A when viewed from above. Operation unit 20B is a unit for allowing a user to operate heating coil 24B of coil unit 18B, and is disposed in front of coil unit 18B when viewed from above. Each of operation units 20A and 20B includes a plurality of capacitive buttons 28 that are operated by a user via top plate 12.

[0032] Moreover, the operation units 20A and 20B are disposed within the housing 14 so as to be located between the air intake 14a of the housing 14 and the control board 22 when viewed from above.

[0033] The control board 22 is a board that controls the coil units 18A, 18B and the operation units 20A, 20B, and is disposed within the housing 14. The control board 22 is also provided within the housing 14 so as to be located below the coil units 18A, 18B. Furthermore, the control board 22 is connected to an external power source via the power cable 16. In the case of the first embodiment, for example, an inverter circuit, a power supply circuit, a filter circuit, a processor, a memory, and the like are mounted on the control board 22.

[0034] 4, a plurality of heat-generating components 30, 32, 34, and 36 are mounted on the control board 22. The heat-generating components 30, 32, 34, and 36 are electronic components such as capacitors, choke coils, and IGBTs (Insulated Gate Bipolar Transistors). In this specification, the term "heat-generating component" refers to a component that requires temporary or continuous forced cooling in order to operate stably and / or generate a heat quantity that affects components such as other components.

[0035] In the case of the first embodiment, the heat-generating components 30, 32, 34, and 36 are disposed at the front end of the control board 22, i.e., at the end on the side of the intake ports 14a and 14b of the housing 14. This allows the heat-generating components 30, 32, 34, and 36 to be efficiently cooled by the air A that flows into the housing 14 via the intake ports 14a and 14b. In other words, the heat-generating components 30, 32, 34, and 36 are cooled by the air A at approximately room temperature, not by the air A at a high temperature whose temperature has been increased by other electronic components.

[0036] Furthermore, in the case of the first embodiment, the arrangement positions on the control board 22 of the heat generating components 30, 32, 34, and 36 and the cooling method thereof differ depending on the amount of heat generated by each of them.

[0037] The heat generating components 30, 32, which generate a relatively large amount of heat, are disposed on the control board 22 at a position that is not between the operation unit 20A and the coil unit 18A and not between the operation unit 20B and the coil unit 18B when viewed from above. As a result, the air A that flows in through the air intakes 14a, 14b is directed toward the heat generating components 30, 32 without being heated by the operation units 20A, 20B. As a result, the heat generating components 30, 32 are cooled more efficiently than when they are disposed downwind of the operation units 20A, 20B.

[0038] In addition, this layout of the heat generating components 30, 32 prevents the air A, which has become hot due to the cooling of the heat generating components 30, 32, from flowing toward the coil units 18A, 18B. In contrast, when the heat generating components 30, 32 are located upwind of the coil units 18A, 18B, the air A in a high temperature state flows from the heat generating components 30, 32 toward the coil units 18A, 18B. As a result, the cooling efficiency of the coil units 18A, 18 decreases. Therefore, the heat generating components 34, 36, which generate a relatively small amount of heat, are arranged between the operation unit 20A and the coil unit 18A and between the operation unit 20B and the coil unit 18B when viewed from above.

[0039] As shown in FIGS. 4 and 5, the control board 22 is provided with a number of heat sinks 40, 42, and 44.

[0040] Each of the heat sinks 40, 42, and 44 is made of a material having high thermal conductivity, such as an aluminum material, and includes a plurality of fins 40a, 42a, and 44a that extend in the front-rear direction of the cooking appliance 10 and are spaced apart in the left-right direction.

[0041] The heat sinks 40, 42, and 44 are thermally connected to the heat generating components 30, 32, and 34, except for the heat generating component 36, which has the smallest amount of heat generation. Note that the term "thermal connection" used here refers to a state in which the heat generating components and the heat sink are in direct or indirect contact with each other so that heat can be transferred from the heat generating components to the heat sink.

[0042] In the case of the first embodiment, the heat sink (second heat sink) 40 is provided on the control board 22 in contact with the upper surface of the heat-generating component 30. Moreover, the heat sink (second heat sink) 42 is provided on the control board 22 in contact with the upper surface of the heat-generating component 32. Moreover, the heat sink (first heat sink) 44 is provided on the control board 22 in contact with the upper surface of the heat-generating component 34.

[0043] 4, the heat sinks 40, 42, and 44 extend from the heat generating components 30, 32, and 34 toward the intake ports 14a, 14b of the housing 14, that is, toward the front in the case of the present embodiment 1. This increases the surface area of ​​the fins 40a, 42a, and 44a of the heat sinks 40, 42, and 44, respectively, and improves the cooling performance for the heat generating components 30, 32, and 34.

[0044] In addition, since the fins 40a, 42a, 44a do not extend upward but extend forward, the vertical size of the cooking device 10 does not increase. This can contribute to making the cooking device 10 thinner.

[0045] In addition, because the heat sinks 40, 42, and 44 extend from the heat generating components 30, 32, and 34 toward the intake ports 14a, 14b, the cooling performance of the heat sinks 40, 42, and 44 is improved compared to when the heat sinks 40, 42, and 44 extend in a direction away from the intake ports 14a, 14b. That is, by extending toward the intake ports 14a, 14b, the opportunities for contact between the air A, which has a relatively low temperature, and the heat sinks 40, 42, and 44 are increased.

[0046] The heat sinks 40, 42 extend in the front-rear direction toward the intake ports 14a, 14b of the housing 14 so that a portion of the heat sinks 40, 42 is adjacent to the operation units 20A, 20B in the left-right direction of the cooking appliance 10. This further improves the cooling efficiency of the heat sinks 40, 42 for the heat generating components 30, 32. In addition, the dead space between the operation unit 20A and the left side wall 14e of the housing 14, the dead space between the operation units 20A and 20B, and the dead space between the operation unit 20B and the right side wall 14f of the housing 14 are effectively utilized. In other words, by extending into these dead spaces, the heat sinks 40, 42 can have high cooling performance without affecting the layout of the surrounding components and without changing the size of the cooking appliance 10.

[0047] In the first embodiment, as shown in FIGS. 3 to 5, a plurality of intake fans (first fans) 50 and a plurality of exhaust fans (second fans) 52 are provided within the housing 14.

[0048] The multiple intake fans 50 are, for example, axial fans, and are provided between the heat sinks 40, 42, and 44 and the intake ports 14a and 14b of the housing 14 when viewed from above.

[0049] Each of the intake fans 50 draws in air A from the outside through the intake ports 14a and 14b, and blows the drawn-in air A toward the heat sinks 40, 42, and 44. This allows the air A to be efficiently drawn into the housing 14 from the outside. In addition, the heat sinks 40, 42, and 44, which are in a high temperature state due to the heat generated by the heat generating components 30, 32, and 34, are further cooled. Therefore, since the heat sinks 40, 42, and 44 are forcibly cooled by the intake fan 50, the heat sinks 40, 42, and 44 can be made smaller than when there is no intake fan 50. In particular, reducing the size of the heat sinks 40, 42, and 44 in the vertical direction can contribute to making the cooking appliance 10 thinner.

[0050] In the case of the present embodiment 1, when viewed from above, an intake fan 54 is provided between the heat-generating component 36 that is not thermally connected to the heat sink and the intake ports 14a, 14b of the housing 14. The heat-generating component 36 is cooled by contact with the air A blown out from the intake fan 54.

[0051] The exhaust fans 52 are, for example, axial fans, and are provided between the control board 22 and the exhaust ports 14c, 14d of the housing 14 when viewed from above.

[0052] Each exhaust fan 52 sucks in air A inside the housing 14 and blows the sucked air A toward the exhaust ports 14c, 14d. This allows the high-temperature air A inside the housing 14 to be efficiently exhausted to the outside.

[0053] In the present embodiment, the intake fan 50, the exhaust fan 52, and the intake fan 54 are the same fan having a size of 30 mm square. The reason for using such a small fan is to suppress an increase in the vertical size of the cooking appliance 10 due to the fans.

[0054] In the first embodiment, the intake fans 50, 54 and the exhaust fan 52 face each other in the front-rear direction of the cooking appliance 10 when viewed from above. The intake fans 50, 54 are arranged in the housing 14 so as to be positioned differently in the left-right direction of the cooking appliance 10 and to be arranged over the entirety in the left-right direction. At the same time, the exhaust fans 52 are arranged in the housing 14 so as to be positioned differently in the left-right direction and to be arranged over the entirety in the left-right direction. As a result, the fans 50, 52, and 54 generate a flow of air A in the front-rear direction of the cooking appliance 10 throughout the entirety inside the housing 14. That is, a flow of air A is generated from the intake ports 14a, 14b of the housing 14 toward the exhaust ports 14c, 14d. As a result, in addition to cooling the heat-generating components 30, 32, and 34 via the heat sinks 40, 42, and 44, the components within the housing 14, such as the heat-generating component 36, the coil units 18A, 18B, and the operation units 20A and 20B, are also cooled.

[0055] According to the first embodiment as described above, the cooking device can ensure high heat dissipation performance while being made thin.

[0056] (Embodiment 2) Except for some differences in characteristics, the present embodiment 2 is substantially the same as the above-mentioned embodiment 1. Therefore, the differences will be described.

[0057] Fig. 6 is an exploded perspective view of a cooking device according to embodiment 2 of the present disclosure with the top plate removed, and Fig. 7 is a perspective view of the cooking device with the top plate removed.

[0058] 6 and 7, the cooking device 110 according to the second embodiment has an external unit 160 outside the housing 114. The external unit 160 is electrically connected to the control board 122 in the housing 114 via a relay cable 162. The external unit 160 also includes a power cable 116 that electrically connects to an external power source such as a commercial power source.

[0059] A board on which a filter circuit is formed is built into external unit 160. The filter circuit electrically connects control board 122 and an external power supply, and suppresses the transmission of noise from the external power supply to control board 122, and also suppresses the transmission of noise from control board 122 to the external power supply. Since the filter circuit is provided outside housing 114, rather than on control board 122 inside housing 114, it is possible to suppress a rise in temperature inside housing 114.

[0060] Cooking device 110 according to the second embodiment also has guide members 164, 166 that cover intake fans 150, 154 and heat sinks 140, 142, and 144. Air blown out from intake fan 150 located in front of heat sink 140 is guided to heat sink 140 by guide member 164. Air blown out from intake fan 150 located in front of heat sink 142 is guided to heat sink 142. Air blown out from intake fan 154 located in front of heat sink 144 is guided to heat sink 144. As a result, heat sinks 140, 142, and 144 are cooled more than in the case where guide members 164, 166 are not present.

[0061] In the second embodiment as described above, similarly to the first embodiment, the cooking device can be made thin and at the same time ensure high heat dissipation performance.

[0062] 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.

[0063] For example, in the case of the above-mentioned embodiment 1, the intake ports 14a and 14b are provided at the front end of the housing 14, and the exhaust ports 14c and 14d are provided at the rear end. That is, the intake ports 14a and 14b and the exhaust ports 14c and 14d face each other in the front-rear direction of the cooking device 10 when viewed from above. However, the embodiment of the present disclosure is not limited to this. The intake port may be provided at an end other than the front end. For example, the intake port may be provided at the left end of the housing, and the exhaust port may be provided at the right end of the housing. Also, for example, the intake port may be provided at the front end of the housing, and the exhaust port may be provided at the left and right ends of the housing.

[0064] In the case of the above-mentioned first embodiment, a plurality of intake fans 50 and a plurality of exhaust fans 52 are provided in the housing 14. However, the embodiment of the present disclosure is not limited to this. Either the intake fan or the exhaust fan may be omitted. In other words, as long as there is a flow of air that flows from the outside into the housing and flows from the housing to the outside, it is not necessary to provide a fan in the housing.

[0065] Furthermore, in the case of the above-described first embodiment, the heat sinks 40, 42, and 44 are thermally connected to the heat generating components 30, 32, and 34 by contacting the upper surfaces of the heat generating components 30, 32, and 34. However, the embodiment of the present disclosure is not limited to this. The heat sinks and the heat generating components may be thermally connected via another heat transfer member such as a heat pipe.

[0066] That is, a heating cooker according to an embodiment of the present disclosure broadly comprises a top plate on which an object to be heated is placed, a housing supporting the top plate and having an air intake at one end in a first direction, a heating coil arranged within the housing and below the top plate, a control board arranged within the housing and below the heating coil, and an operation unit arranged within the housing and between the air intake and the control board, wherein the control board comprises a plurality of heat-generating components and first and second heat sinks thermally connected to each of the heat-generating components, the first heat sink is located between the heating coil and the operation unit, and the second heat sink extends in the first direction toward the air intake so that a portion of the heat-generating components is adjacent to the operation unit in a second direction perpendicular to the first direction. [Industrial Applicability]

[0067] The present disclosure is applicable to any heating cooker. [Explanation of symbols]

[0068] 10 Cooker 14. Cabinet 20A Operation Unit 20B Operation unit 24A heating coil 24B Heating coil 30 Heat generating parts 32 Heat generating parts 34 Heat generating parts 40 Heat sink (second heat sink) 42 Heat sink (second heat sink) 44 Heat sink (first heat sink)

Claims

1. A top plate on which a heating target is placed; a housing supporting the top plate and having an air intake port at one end in a first direction; a heating coil disposed within the housing and below the top plate; A control board disposed within the housing and below the heating coil; an operation unit disposed within the housing and between the intake port and the control board; the control board includes a plurality of heat generating components and first and second heat sinks thermally connected to the heat generating components, the first heat sink is located between the heating coil and the operation unit; A cooking appliance, wherein the second heat sink extends in the first direction toward the air intake port such that a portion of the second heat sink is adjacent to the operating unit in a second direction perpendicular to the first direction.

2. the plurality of heat generating components are provided at an end of the control board on the side of the intake port, The cooking device according to claim 1 , wherein the first and second heat sinks are in contact with an upper surface of the heat generating component.

3. The cooking device according to claim 2 , wherein the first and second heat sinks extend from the heat generating component toward the air intake.

4. 4. The cooking device according to claim 1, further comprising an intake fan provided between each of the first and second heat sinks and the intake port, the intake fan drawing in air from the outside through the intake port and blowing the drawn air toward the first and second heat sinks.

5. 5. The cooking device according to claim 4, further comprising a guide member that covers the intake fan and the first and second heat sinks and guides air blown out from the intake fan to the first and second heat sinks.

6. The cooking device according to claim 1 , wherein the housing includes an exhaust port at the other end in the first direction.

7. The cooking device according to claim 6 , further comprising an exhaust fan provided between the control board and the exhaust port, for sucking air from within the housing and blowing the sucked air toward the exhaust port.

8. a filter circuit electrically connecting the control board and an external power supply; The cooking device according to claim 1 , wherein the filter circuit is located outside the housing.

9. The cooking device according to claim 1 , wherein the first direction is a front-to-rear direction of the cooking device.

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