Heating cooker

Abstract

To provide a heating cooker that enables suppression of liquid foreign substances from adhering to electrical components.SOLUTION: A heating cooker disclosed herein includes: an electrical component; an electrical component housing chamber that accommodates the electrical component; a fan for blowing air into the electrical component housing chamber; an air passage having one end communicating with the outside through a first opening opened upward and the other end connected to the electrical component housing chamber; and a first partition wall disposed at a connection portion between the air passage and the electrical component housing chamber. The first partition wall extends upward from an inner lower surface of the air passage. An upper end of the first partition wall is positioned above an upper end of the electrical component.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a cooking device. [Background technology]

[0002] Patent Document 1 discloses a cooking appliance. The cooking appliance includes an electrical component, an electrical component housing chamber that houses the electrical component, a fan that blows air into the electrical component housing chamber, an air passage that has one end communicating with the outside through a first opening that opens upward and the other end connected to the electrical component housing chamber, and a first partition wall that is disposed at the connection point between the air passage and the electrical component housing chamber. The first partition wall extends upward from the inner lower surface of the air passage. The upper end of the first partition wall is located below the upper end of the electrical component. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-311092 Summary of the Invention [Problem to be solved by the invention]

[0004] In the cooking device of Patent Document 1, when liquid foreign matter enters through the first opening that opens upward, the liquid foreign matter may scatter in the air passage and adhere to electrical components. This specification provides a technology that can prevent liquid foreign matter from adhering to electrical components. [Means for solving the problem]

[0005] A cooking appliance according to a first aspect of the present specification may include an electrical component, an electrical component housing chamber that houses the electrical component, a fan that blows air into the electrical component housing chamber, an air passage that has one end communicating with the outside through a first opening that opens upward and the other end connected to the electrical component housing chamber, and a first partition wall disposed at a connection point between the air passage and the electrical component housing chamber. The first partition wall may extend upward from an inner lower surface of the air passage. An upper end of the first partition wall may be located higher than an upper end of the electrical component.

[0006] According to the above configuration, even if liquid foreign matter enters through the first opening that opens upward, the first partition wall arranged at the connection point between the air passage and the electrical component housing chamber can prevent the liquid foreign matter from reaching the electrical component housing chamber. Because the first partition wall extends from the inner lower surface of the air passage to above the upper end of the electrical component, even if the liquid foreign matter splashes inside the air passage, the liquid foreign matter can be more reliably prevented from reaching the electrical component housing chamber. This configuration can prevent liquid foreign matter from adhering to the electrical components.

[0007] In a second aspect, the cooking device of the first aspect may further include a second partition wall extending downward from an inner upper surface of the air passage at a position closer to the first opening than the first partition wall.

[0008] According to the above configuration, even if liquid foreign matter enters through the first opening that opens upward, the second partition wall disposed between the first opening and the first partition wall can more reliably prevent the liquid foreign matter from reaching the electrical component accommodating chamber. Moreover, because the second partition wall extends downward from the inner upper surface of the air passage, the liquid foreign matter can be prevented from reaching the electrical component accommodating chamber by running down the inner upper surface of the air passage from the first opening.

[0009] In a third aspect, in the cooking device of the second aspect, a lower end of the second partition wall may be located lower than an upper end of the first partition wall.

[0010] According to the above configuration, even if liquid foreign matter enters through the first opening that opens upward and splashes within the air passage, the liquid foreign matter can be more reliably prevented from reaching the electrical component storage chamber.

[0011] In a fourth aspect, the cooking device of any one of the first to third aspects may further include a plurality of shielding plates arranged inside the air passage at a position closer to the first opening than the first partition wall. A lower end or an upper end of one of the plurality of shielding plates may be located lower than an upper end of another of the plurality of shielding plates and may be located higher than a lower end of the other of the plurality of shielding plates.

[0012] According to the above configuration, one of the multiple shielding plates overlaps another of the multiple shielding plates horizontally, so that even if liquid foreign matter enters through the first opening that opens upward, the multiple shielding plates arranged inside the air passage can more reliably prevent the liquid foreign matter from reaching the electrical component storage chamber.

[0013] In a fifth aspect, in the cooking device of the fourth aspect, each of the plurality of shielding plates may be inclined in the same direction with respect to the direction in which air flows inside the air passage.

[0014] According to the above configuration, the shielding plates function as rectifying plates that rectify the flow of air, thereby reducing the flow resistance when the air is circulated through the electrical component housing chamber and the air passage by driving the fan, thereby increasing the flow rate of air flowing through the electrical component housing chamber and the air passage and further facilitating cooling of the electrical components.

[0015] In a sixth aspect, in the heating cooker of the fifth aspect, each of the plurality of shielding plates may be inclined so that the downstream portion is positioned lower than the upstream portion with respect to the direction in which air flows inside the air passage.

[0016] According to the above configuration, it is possible to further reduce the flow path resistance when air flows along the inner upper surface of the air passage.

[0017] In a seventh aspect, in the heating cooker of any one of the fourth to sixth aspects, the upper end of the uppermost one of the plurality of shielding plates may be connected to the inner upper surface of the air passage.

[0018] According to the above configuration, it is possible to prevent liquid foreign matter from flowing from the first opening along the inner upper surface of the air passage and reaching the electrical component housing chamber.

[0019] In an eighth aspect, in the heating cooker of any one of the fourth to seventh aspects, the lower end of the lowest one of the plurality of shielding plates may be located lower than the upper end of the first partition wall.

[0020] According to the above configuration, the lowest of the multiple shielding plates and the first partition wall overlap horizontally, so that even if liquid foreign matter enters through the first opening that opens upward and splashes within the air passage, the liquid foreign matter can be more reliably prevented from reaching the electrical component storage chamber.

[0021] In a ninth aspect, in the heating cooker of any one of the first to eighth aspects, when the fan is driven, the air may flow from the electrical component storage chamber to the air passage and be discharged to the outside through the first opening.

[0022] According to the above configuration, even if liquid foreign matter enters through the first opening that opens upward and is present in the air passage, the vapor from the liquid foreign matter can be prevented from reaching the electrical component housing chamber due to the air flow, thereby preventing the vapor from the liquid foreign matter from adhering to the electrical components. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a view of a cooking device 2 according to a first embodiment as viewed from above on the front left. [Figure 2] 1 is an exploded view of a cooking device 2 according to a first embodiment, viewed from above on the front right. [Figure 3] 1 is an exploded view of a substrate cooling unit 76 according to the first embodiment, viewed from above on the front right. [Figure 4] FIG. 2 is a view of a substrate cooling unit 76 according to the first embodiment, cut along a plane perpendicular to the left-right direction, and viewed from the right. [Figure 5] 1 is a view of an exhaust duct 90A according to the first embodiment, cut along a plane perpendicular to the up-down direction, as viewed from the right side. [Figure 6] FIG. 10 is a view of an exhaust duct 90B according to a second embodiment, cut along a plane perpendicular to the up-down direction and viewed from the right. [Figure 7] FIG. 10 is a view of an exhaust duct 90C according to a third embodiment, cut along a plane perpendicular to the up-down direction and viewed from the right. DETAILED DESCRIPTION OF THE INVENTION

[0024] Example 1 The cooking appliance 2 shown in FIG. 1 is, as an example, a built-in type cooking appliance that is incorporated into a system kitchen (not shown). In the following description, the front, back, up, down, left and right directions are defined based on the cooking appliance 2 incorporated into the system kitchen. The up and down direction here specifically refers to the up and down direction along the vertical direction. Furthermore, the front direction is the direction in which a user is positioned as viewed from the cooking appliance 2, and the direction opposite to the front direction is the rear direction. Therefore, it should be noted that the front, back, left and right directions in the following description are different from the front, back, left and right directions as viewed from the user using the cooking appliance 2.

[0025] The cooking device 2 includes a cooking device body 4, a top plate 10, a gas stove 12, a first IH (Induction Heating) stove 14, a second IH stove 16, a stove operation unit 18, a grill chamber 20, and a grill operation unit 22.

[0026] As shown in FIG. 2, the cooker body 4 includes a housing 24, an exposed portion 26, a plurality of through holes 28, and a top plate base 30. The housing 24 is formed in a box shape that is open at the top. The exposed portion 26 is provided at the front of the housing 24. The exposed portion 26 is exposed at the front of a system kitchen (not shown). The plurality of through holes 28 are provided in the housing 24 above the exposed portion 26. The plurality of through holes 28 penetrate the housing 24 in the front-to-rear direction. The plurality of through holes 28 are not exposed at the front of the system kitchen, but communicate with the space in front of the system kitchen through gaps between the system kitchen and the exposed portion 26, etc. The top plate base 30 extends horizontally from the upper edge of the housing 24.

[0027] The top plate 10 is exposed on the worktop (not shown) of the system kitchen. The top plate 10 includes a glass plate 32, a frame 34, and an exhaust port cover 36. The glass plate 32 is made of, for example, crystallized glass. The frame 34 holds the glass plate 32 and the exhaust port cover 36, and is fixed to the top plate base 30 with screws or the like. The top plate 10 can be removed from the cooker body 4 by releasing the fixation between the frame 34 and the top plate base 30.

[0028] The gas stove 12, the first IH stove 14, and the second IH stove 16 are provided on the top plate 10. The gas stove 12 is located on the right side when viewed from the center of the top plate 10. The first IH stove 14 is located on the front left side when viewed from the center of the top plate 10. The second IH stove 16 is located on the rear left side when viewed from the center of the top plate 10.

[0029] The gas stove 12 includes a trivet 38, a burner 40, a temperature sensor 42, a gas supply path 44, and an igniter (not shown). Food to be cooked can be placed on the trivet 38. Fuel gas is supplied to the burner 40 via the gas supply path 44. A solenoid valve (not shown) switches the supply of fuel gas to the burner 40 between permitted and prohibited states. When the igniter is activated while the supply of fuel gas to the burner 40 is permitted, combustion of the fuel gas begins. In other words, the gas stove 12 is ignited. The gas stove 12 can heat food placed on the trivet 38 using combustion gases generated when the fuel gas is burned. The temperature sensor 42 detects the temperature of the food placed on the trivet 38. When the supply of fuel gas to the burner 40 is prohibited, combustion of the fuel gas ends. In other words, the gas stove 12 is extinguished. In this specification, the term "food to be cooked" may refer to cooking utensils such as a pot, or may refer to the food ingredients themselves that are to be cooked.

[0030] The first IH stove 14 includes a first mounting portion 46, a first coil base 48, a first IH coil 50, and a temperature sensor (not shown). The first mounting portion 46 is made of a material that is permeable to a magnetic field (e.g., crystallized glass). In this embodiment, a portion of the glass plate 32 functions as the first mounting portion 46. In the drawings, the portion of the glass plate 32 that functions as the first mounting portion 46 is indicated by a circle. The first coil base 48 holds the first IH coil 50. The first coil base 48 and the first IH coil 50 are positioned directly below the first mounting portion 46. The first IH coil 50 generates a high-frequency magnetic field when a high-frequency current is supplied to it. The first IH stove 14 can induction-heat an object placed on the first mounting portion 46 using this high-frequency magnetic field. The temperature sensor detects the temperature of the object placed on the first mounting portion 46 through the top plate 10.

[0031] The second IH stove 16 includes a second mounting portion 52, a second coil base 54, a second IH coil 56, and a temperature sensor (not shown). The second IH stove 16 is configured in substantially the same manner as the first IH stove 14. Therefore, a description of the second IH stove 16 will be omitted.

[0032] The grill chamber 20 is accommodated in the housing 24. The grill chamber 20 can be opened and closed via a grill door 58 provided in the exposed portion 26. The grill chamber 20 can accommodate food to be cooked. Although not shown, the grill chamber 20 is equipped with a gas burner (also called a grill burner) that heats the food to be cooked accommodated in the grill chamber 20. The grill chamber 20 is equipped with a grill duct 60 for exhausting oily smoke and the like generated within the grill chamber 20. A grill exhaust port 62 is provided at the rear upper part of the grill duct 60. The grill exhaust port 62 opens toward the space above the top plate 10 via the exhaust port cover 36.

[0033] As shown in FIG. 1 , the stove operation unit 18 is provided on the exposed portion 26 to the left of the grill door 58. The stove operation unit 18 includes a power switch 64 for the cooking appliance 2, three heating amount operation units 66a, 66b, and 66c, and a panel operation unit 68. The heating amount operation unit 66a is used to instruct the gas stove 12 to start heating (i.e., ignite) and stop heating (i.e., turn off the flame), and also to adjust the amount of heating of the gas stove 12. The heating amount operation unit 66b is used to instruct the first IH stove 14 to start heating and stop heating, and also to adjust the amount of heating of the first IH stove 14. The heating amount operation unit 66c is used to instruct the second IH stove 16 to start heating and stop heating, and also to adjust the amount of heating of the second IH stove 16. The panel operation unit 68 also includes a display and numerous switches. Various operations (for example, setting operations related to automatic cooking) related to the gas stove 12, the first IH stove 14, and the second IH stove 16 can be performed on the panel operation unit 68. The panel operation unit 68 can be stored inside the cooker body 4 as shown in FIG.

[0034] The grill operation unit 22 shown in FIG. 1 is provided on the right side of the grill door 58 in the exposed portion 26. The grill operation unit 22 includes a heat amount operation unit 70 and a panel operation unit 72. The heat amount operation unit 70 is used to issue commands to start (i.e., ignite) and stop (i.e., extinguish) heating of the grill burner (not shown), as well as to adjust the amount of heat of the grill burner. The panel operation unit 72 is equipped with a display and numerous switches. Various operations related to the grill chamber 20 (for example, setting operations related to automatic cooking) can be performed using the panel operation unit 72. The panel operation unit 72, like the panel operation unit 68, can be stored inside the cooker body 4.

[0035] As shown in FIG. 2, the cooking device 2 includes a substrate cooling unit 76 and a coil cooling unit 78.

[0036] (Substrate cooling unit 76) The board cooling unit 76 includes a board cooling case 86. The board cooling case 86 is housed in the housing 24 and is disposed on the left side of the grill chamber 20. The board cooling case 86 is fixed to the housing 24 with screws or the like. The board cooling case 86 can be removed from the housing 24 by releasing the fastening with the screws or the like. This makes the board cooling unit 76 detachable from the cooker body 4.

[0037] As shown in FIG. 3, the substrate cooling case 86 includes a case body 88 and an exhaust duct 90A. The case body 88 includes an upper case member 92 and a lower case member 94. The upper case member 92, the lower case member 94, and the exhaust duct 90A are formed as separate members. In this embodiment, the upper case member 92 and the lower case member 94 are connected to each other by fasteners (not shown). The case body 88 and the exhaust duct 90A are connected to each other by a fitting connection. Note that the case body 88 and the exhaust duct 90A may also be connected to each other by fasteners (not shown).

[0038] A board accommodating chamber 89 (see FIG. 4) is formed inside the case main body 88 to accommodate a power supply board 100, a first inverter board 102, and a second inverter board 104. The power supply board 100 electrically connects an external power source (not shown) such as a commercial power source to each electrical component of the cooking appliance 2 (e.g., the first inverter board 102 and the second inverter board 104). The power supply board 100 includes, for example, a transformer circuit and a rectifier circuit. The power supply board 100 can adjust the power supplied from the external power source and supply it to each electrical component of the cooking appliance 2. The first inverter board 102 and the second inverter board 104 include, for example, a switching circuit. The first inverter board 102 and the second inverter board 104 can supply high-frequency current to the first IH coil 50 (see FIG. 2) and the second IH coil 56 (see FIG. 2), respectively. The first inverter board 102 is provided with a heat sink 102a arranged near the rear and lower ends of the first inverter board 102. The second inverter board 104 is provided with a heat sink 104a arranged near the rear and lower ends of the second inverter board 104. Although not shown, a through hole is provided in the rear of the case main body 88 to allow the wire harnesses connected to each board to pass through. However, the gap between the through hole and the wire harness is sealed with a sealing member (e.g., sponge) not shown.

[0039] As shown in FIG. 4, a hood portion 106 is provided at the bottom of the case body 88. The hood portion 106 has an opening 108 that opens forward. A communication port 110 is provided at the upper rear portion of the case body 88. A peripheral wall 110a that protrudes upward is provided around the communication port 110. The exhaust duct 90A has a front opening 112 and a rear opening 114. The peripheral wall 110a of the communication port 110 of the case body 88 is fitted into the front opening 112. The rear opening 114 opens upward behind the front opening 112. The rear opening 114 communicates with the space above the top plate 10 (see FIG. 1) via the exhaust port cover 36 (see FIG. 1). An air passage 111 is formed inside the exhaust duct 90A, through which air flows from the front opening 112 to the rear opening 114.

[0040] The board cooling unit 76 includes a board cooling fan 116. The board cooling fan 116 is attached to the front lower portion of the case body 88. The board cooling fan 116 is disposed adjacent to the hood portion 106. The board cooling fan 116 is, for example, a sirocco fan. The board cooling fan 116 includes a fan intake port 118 and a fan outlet port 120. The fan intake port 118 opens downward. The fan intake port 118 communicates with the space below the cooker body 4 via an intake hole (not shown) formed in the bottom wall of the housing 24 (see FIG. 1). The fan outlet port 120 opens rearward and is aligned with the opening 108 of the hood portion 106. The fan outlet port 120 communicates with the interior of the board accommodation chamber 89 via the opening 108.

[0041] The substrate cooling fan 116 is driven, for example, when the power of the cooking appliance 2 is turned on, and is stopped when the power of the cooking appliance 2 is turned off. When the substrate cooling fan 116 is driven, air is drawn from the space below the cooking appliance body 4 (see FIG. 1) through an air intake hole (not shown) into the fan intake port 118. The air is then blown rearward through the fan outlet 120. The air blown out from the fan outlet 120 flows into the substrate accommodating chamber 89 through the opening 108. The air that has flowed into the substrate accommodating chamber 89 passes through the heat sinks 102a and 104a, and then flows into the exhaust duct 90A through the communication port 110 and the front opening 112. The air that has flowed into the exhaust duct 90A flows through the air passage 111 and is discharged to the outside of the exhaust duct 90A through the rear opening 114.

[0042] In this manner, when the board cooling fan 116 is driven, an air flow is generated in the internal space of the board cooling case 86. The board cooling unit 76 uses this air flow to discharge heat generated in the power supply board 100, the first inverter board 102, and the second inverter board 104 to the outside, thereby cooling the power supply board 100, the first inverter board 102, and the second inverter board 104. In this embodiment, the air flow generated in the internal space of the board cooling case 86 when the board cooling fan 116 is driven is also referred to as "board cooling air A1." In FIG. 4, the board cooling air A1 is schematically illustrated using arrows. In this embodiment, the upstream side and downstream side in the flow direction of the board cooling air A1 may be simply referred to as the "upstream side" and the "downstream side," respectively.

[0043] The exhaust duct 90A includes a front wall 115 extending upward from the inner lower surface 113a of the air passage 111. A front partition wall 117 is formed by the front wall 115 and a rear portion of the peripheral wall 110a of the communication opening 110 of the case main body 88. The front partition wall 117 is disposed at the connection point between the air passage 111 and the board accommodating chamber 89, and the upper end of the front partition wall 117 (i.e., the upper end of the peripheral wall 110a) is disposed higher than the upper ends of the power supply board 100, the first inverter board 102, and the second inverter board 104. Therefore, even if liquid foreign matter, such as boiled over food on the top plate 10, seeps into the exhaust duct 90A through the rear opening 114, the liquid foreign matter can be prevented from adhering to the power supply board 100, the first inverter board 102, and the second inverter board 104 in the board accommodating chamber 89.

[0044] Furthermore, exhaust duct 90A is disposed between front partition wall 117 and rear opening 114, and includes rear partition wall 119 extending downward from inner upper surface 113b of air passage 111. Therefore, even if liquid foreign matter enters exhaust duct 90A through rear opening 114, the liquid foreign matter can be prevented from adhering to power supply board 100, first inverter board 102, and second inverter board 104 in board accommodating chamber 89.

[0045] 5, exhaust duct 90A further includes a first shielding plate 124, a second shielding plate 126 disposed below first shielding plate 124, and a third shielding plate 128 disposed below second shielding plate 126. First shielding plate 124, second shielding plate 126, and third shielding plate 128 are all disposed inside air passage 111 so as to incline from top to bottom from the front (upstream side) to the rear (downstream side).

[0046] A front edge 124f of the first shielding plate 124 is connected to the inner upper surface 113b of the air passage 111. A rear edge 124r of the first shielding plate 124 is located lower than a front edge 126f of the second shielding plate 126. The rear edge 126r of the second shielding plate 126 is located lower than a front edge 128f of the third shielding plate 128. Furthermore, the rear edge 128r of the third shielding plate 128 is located lower than the upper end of the front partition wall 117 (i.e., the upper end of the peripheral wall 110a). The first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 can be said to be flow rectifying plates that rectify the flow of air, and can also be said to be shielding plates that prevent liquid foreign matter that has entered through the rear opening 114 from moving toward the substrate accommodating chamber 89.

[0047] Exhaust duct 90A further includes drain port 122. Drain port 122 is formed on inner lower surface 113a of air passage 111. Liquid foreign matter that has seeped in through rear opening 114 collects on inner lower surface 113a of air passage 111 and is then discharged from drain port 122 to the outside of exhaust duct 90A. The liquid discharged from drain port 122 drops onto the inner lower surface of housing 24 (see FIG. 2) and accumulates inside housing 24. The liquid accumulated inside housing 24 is removed, for example, during maintenance of cooking appliance 2.

[0048] (Coil cooling unit 78) 2, the coil cooling unit 78 includes a coil cooling case 142 and a coil cooling fan (not shown). The coil cooling case 142 supports the first IH coil 50 and the second IH coil 56 via the first coil base 48 and the second coil base 54.

[0049] The coil cooling case 142 is housed in the housing 24 and is disposed above the substrate cooling unit 76 and directly below the top plate 10. The coil cooling case 142 is fixed to the housing 24 with screws or the like. The coil cooling case 142 can be removed from the housing 24 by releasing the fastening with the screws or the like. This makes the coil cooling unit 78 detachable from the cooker body 4. The coil cooling unit 78 may also be fixed to the top plate 10.

[0050] The coil cooling case 142 includes a case body 146, a case first air intake port 150, a case second air intake port 152, and a case exhaust port 154. A coil cooling fan (not shown) is attached to the front of the case body 146. The case first air intake port 150 and the case second air intake port 152 are disposed in the front part of the coil cooling case 142. The case first air intake port 150 and the case second air intake port 152 open toward the front. The case exhaust port 154 is disposed in the rear part of the case body 146. The case exhaust port 154 opens toward the top. The case exhaust port 154 communicates with the space above the top plate 10 via the exhaust port cover 36.

[0051] A cutout portion (not shown) for passing a wire harness (not shown) may be provided in the side wall 146a of the case body 146. However, the gap between the cutout portion and the wire harness is sealed with a sealing member (e.g., sponge) (not shown). Also, the gap between the upper end of the side wall 146a of the case body 146 and the top plate 10 is sealed with a sealing member (e.g., packing) (not shown).

[0052] The coil cooling fan (not shown) is driven, for example, when heating is initiated on at least one of the first IH stove 14 and the second IH stove 16. The coil cooling fan stops when heating is completed on both the first IH stove 14 and the second IH stove 16. When the coil cooling fan (not shown) is driven, air is drawn from the space in front of the cooker body 4 through the multiple through-holes 28 into the fan intake port (not shown). The air is then blown rearward from the fan outlet (not shown). The air blown out from the fan outlet (not shown) flows in through the case first intake port 150 and the case second intake port 152, respectively, and into the interior of the case body 146. The air that has passed through the interior of the case body 146 is exhausted to the outside of the case body 146 through the case exhaust port 154.

[0053] In this way, when the coil cooling fan (not shown) is driven, an air flow is generated in the internal space of the coil cooling case 142. The coil cooling unit 78 uses this air flow to discharge the heat generated in the first IH coil 50 and the second IH coil 56 to the outside, thereby cooling the first IH coil 50 and the second IH coil 56.

[0054] The arrangement and shape of the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 may be changed as appropriate. When viewed from above, the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 may overlap with the rear opening 114.

[0055] Example 2 The cooking appliance 2 of this embodiment is provided with an exhaust duct 90B shown in Fig. 6 instead of the exhaust duct 90A. The exhaust duct 90B has substantially the same configuration as the exhaust duct 90A. The exhaust duct 90B is provided with a first shielding plate 224 and a second shielding plate 226 instead of the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128. The first shielding plate 224 and the second shielding plate 226 are both arranged inside the air passage 111 so as to incline from the bottom to the top from the front (upstream side) to the rear (downstream side).

[0056] A rear edge 224r of the first shielding plate 224 is connected to the lower end of the rear partition wall 119, which extends downward from the inner upper surface 113b of the air passage 111. A front edge 224f of the first shielding plate 224 is located higher than a rear edge 226r of the second shielding plate 226. The front edge 226f of the second shielding plate 226 is located lower than the upper end of the front partition wall 117. In this embodiment, the upper end of the front wall portion 115 is located higher than the upper end of the peripheral wall 110a, and therefore the upper end of the front partition wall 117 is the upper end of the front wall portion 115.

[0057] In the heating cooker 2 of this embodiment, even if liquid foreign matter such as boil-over from the food being cooked on the top plate 10 enters the exhaust duct 90B through the rear opening 114, the liquid foreign matter can be prevented from adhering to the power supply board 100, the first inverter board 102, and the second inverter board 104 in the board accommodating chamber 89.

[0058] Example 3 The cooking appliance 2 of this embodiment is provided with an exhaust duct 90C shown in Fig. 7 instead of the exhaust duct 90A. The exhaust duct 90C has substantially the same configuration as the exhaust duct 90A. The exhaust duct 90C does not include the first shielding plate 124, the second shielding plate 126, or the third shielding plate 128. In this embodiment, the upper end of the front wall portion 115 is located higher than the upper end of the peripheral wall 110a, and therefore the upper end of the front partition wall 117 is the upper end of the front wall portion 115. Also, in this embodiment, the lower end of the rear partition wall 119 is located lower than the upper end of the front partition wall 117.

[0059] In the heating cooker 2 of this embodiment, even if liquid foreign matter such as boil-over from the food being cooked on the top plate 10 enters the exhaust duct 90C through the rear opening 114, the liquid foreign matter can be prevented from adhering to the power supply board 100, the first inverter board 102, and the second inverter board 104 in the board accommodating chamber 89.

[0060] (Variation) The cooking appliance 2 may be a freestanding cooking appliance that is used without being incorporated into a system kitchen.

[0061] Cooking appliance 2 may include an IH stove instead of gas stove 12. Alternatively, cooking appliance 2 may include two gas stoves instead of first IH stove 14 and second IH stove 16.

[0062] The cooking device 2 does not necessarily have to include the grill compartment 20. Alternatively, the cooking device 2 may include another heating compartment (for example, an oven compartment or a microwave compartment) instead of the grill compartment 20.

[0063] The cooking appliance 2 may include a cooling unit for cooling electrical components (for example, an LED board not shown) other than the power supply board 100, the first inverter board 102, the second inverter board 104, the first IH coil 50, and the second IH coil 56. The cooling unit may have a configuration substantially similar to that of the board cooling unit 76 (or the coil cooling unit 78).

[0064] The substrate cooling unit 76 may not be detachable from the cooker body 4. For example, the substrate cooling case 86 may be integrated into the housing 24.

[0065] The arrangement and orientation of the fan intake 118 may be changed as appropriate. For example, the fan intake 118 may be arranged at the rear of the cooker body 4 and may open toward the rear.

[0066] The substrate cooling fan 116 may be disposed inside the substrate cooling air passage P1. In this case, the substrate cooling fan 116 may be disposed downstream of the drain port 122, for example.

[0067] The substrate cooling fan 116 may generate an air flow in the substrate cooling air passage P1 in the opposite direction to the substrate cooling air A1. In this case, when the substrate cooling fan 116 is driven, air flows from the space above the top plate 10 into the exhaust ducts 90A, 90B, and 90C through the rear opening 114. The air that passes through the exhaust ducts 90A, 90B, and 90C flows into the substrate accommodating chamber 89 through the front opening 112 and the communication port 110. The air that flows into the substrate accommodating chamber 89 passes through the heat sinks 102a and 104a, then flows out forward through the opening 108, passes through the substrate cooling fan 116, and is discharged into the space below the cooker body 4.

[0068] (Correspondence) As described above, in one or more embodiments, the cooking appliance 2 includes the power supply board 100, the first inverter board 102, and the second inverter board 104 (examples of electrical components), a board accommodating chamber 89 (an example of an electrical component accommodating chamber) that accommodates the power supply board 100, the first inverter board 102, and the second inverter board 104, a board cooling fan 116 (an example of a fan) that blows air into the board accommodating chamber 89, an air passage 111 that has one end communicating with the outside via a rear opening 114 (an example of a first opening) that opens upward and the other end connected to the board accommodating chamber 89, and a front partition wall 117 (an example of a first partition wall) that is arranged at a connection point between the air passage 111 and the board accommodating chamber 89. The front partition wall 117 extends upward from the inner lower surface 113a of the air passage 111. The upper end of the front partition wall 117 is located higher than the upper ends of the power supply board 100, the first inverter board 102, and the second inverter board 104 (see FIGS. 4 to 7).

[0069] According to the above configuration, even if liquid foreign matter enters through rear opening 114 that opens upward, front partition wall 117 disposed at the connection between air passage 111 and board accommodating chamber 89 can prevent the liquid foreign matter from reaching board accommodating chamber 89. Front partition wall 117 extends from inner lower surface 113a of air passage 111 to above the upper ends of power supply board 100, first inverter board 102, and second inverter board 104. Therefore, even if liquid foreign matter splashes within air passage 111, the liquid foreign matter can be more reliably prevented from reaching board accommodating chamber 89. With this configuration, liquid foreign matter can be prevented from adhering to power supply board 100, first inverter board 102, and second inverter board 104.

[0070] In one or more embodiments, the cooking appliance 2 further includes a rear partition wall 119 (an example of a second partition wall) extending downward from the inner upper surface 113b of the air passage 111 at a position closer to the rear opening 114 than the front partition wall 117.

[0071] According to the above configuration, even if liquid foreign matter seeps in through rear opening 114 that opens upward, rear partition wall 119 disposed between rear opening 114 and front partition wall 117 can more reliably prevent the liquid foreign matter from reaching substrate accommodating chamber 89. Furthermore, because rear partition wall 119 extends downward from the inner upper surface 113b of air passage 111, liquid foreign matter can be prevented from reaching substrate accommodating chamber 89 by running from rear opening 114 along the inner upper surface 113b of air passage 111.

[0072] In one or more embodiments, the lower end of the rear partition wall 119 of the cooking appliance 2 is located lower than the upper end of the front partition wall 117 (see FIG. 7).

[0073] According to the above configuration, even if liquid foreign matter enters through the rear opening 114 that opens upward and splashes within the air passage 111, the liquid foreign matter can be more reliably prevented from reaching the substrate accommodating chamber 89.

[0074] In one or more embodiments, the cooking appliance 2 further includes a first shielding plate 124, a second shielding plate 126, and a third shielding plate 128 (examples of multiple shielding plates) disposed inside the air passage 111 at positions closer to the rear opening 114 than the front partition wall 117 (see FIG. 5). The lower end of the first shielding plate 124 (or the second shielding plate 126) is positioned lower than the upper end of the second shielding plate 126 (or the third shielding plate 128) and higher than the lower end of the second shielding plate 126 (or the third shielding plate 128).

[0075] According to the above configuration, the first shielding plate 124 (or the second shielding plate 126) and the second shielding plate 126 (or the third shielding plate 128) overlap horizontally, so that even if liquid foreign matter infiltrates through the rear opening 114 that opens upward, the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 arranged inside the air passage 111 can more reliably prevent the liquid foreign matter from reaching the substrate accommodating chamber 89.

[0076] In one or more embodiments, the first shielding plate 124 , the second shielding plate 126 , and the third shielding plate 128 are each inclined in the same direction relative to the direction in which air flows inside the air passage 111 .

[0077] According to the above configuration, the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 function as rectifying plates that rectify the flow of air, thereby reducing flow path resistance when air is circulated through the substrate accommodating chamber 89 and the air passage 111 by driving the substrate cooling fan 116. This increases the flow rate of air flowing through the substrate accommodating chamber 89 and the air passage 111, and further promotes cooling of the power supply substrate 100, the first inverter substrate 102, and the second inverter substrate 104.

[0078] In one or more embodiments, each of the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128 is inclined relative to the direction of air flow within the air passage 111 so that the downstream portion is positioned lower than the upstream portion.

[0079] According to the above configuration, the flow path resistance when air flows along the inner upper surface 113b of the air passage 111 can be further reduced.

[0080] In one or more embodiments, the upper end of the first shielding plate 124, which is positioned highest among the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128, is connected to the inner upper surface 113b of the air passage 111.

[0081] According to the above configuration, it is possible to prevent liquid foreign matter from flowing from the rear opening 114 along the inner upper surface 113b of the air passage 111 and reaching the substrate accommodating chamber 89.

[0082] In one or more embodiments, the lower end of the third shielding plate 128, which is the lowest of the first shielding plate 124, the second shielding plate 126, and the third shielding plate 128, is located below the upper end of the front partition wall 117.

[0083] According to the above configuration, the third shielding plate 128 and the front partition wall 117 overlap horizontally, so that even if liquid foreign matter seeps in through the rear opening 114 that opens upward and splashes within the air passage 111, the liquid foreign matter can be more reliably prevented from reaching the substrate accommodating chamber 89.

[0084] In one or more embodiments, when the substrate cooling fan 116 is activated, air flows from the substrate receiving chamber 89 into the air passage 111 and is exhausted to the outside through the rear opening 114 .

[0085] According to the above configuration, even if liquid foreign matter enters through rear opening 114 that opens upward and liquid foreign matter is present in air passage 111, the vapor from the liquid foreign matter can be prevented from reaching substrate accommodating chamber 89 due to the air flow. This makes it possible to prevent vapor from the liquid foreign matter from adhering to power supply board 100, first inverter board 102, and second inverter board 104.

[0086] The technical elements described in this specification or drawings exhibit technical utility either alone or in various combinations, and are not limited to the combinations set forth in the claims at the time of filing. Furthermore, the technologies illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of those objectives is itself technically useful. [Explanation of symbols]

[0087] 2:Heating cooker 4: Cooking appliance body 10: Top plate 12: Gas stove 14: 1st IH stove 16: Second IH stove 18: Stovetop control panel 20: Grill compartment 22: Grill control panel 24: Housing 26:Exposed part 28: Multiple through holes 30: Top plate base 32: Glass plate 34: Frame 36: Exhaust vent cover 38: Trivet 40: Stovetop Burner 42: Temperature sensor 44: Gas supply line 46: First placement section 48: First coil base 50: 1st IH coil 52: Second placement section 54: Second coil base 56: Second IH coil 58: Grill door 60: Grill duct 62: Grill exhaust vent 64: Power switch 66a, 66b, 66c: Heating amount operation section 68: Panel operation section 70: Heating amount operation section 72: Panel operation section 76: Substrate cooling unit 78: Coil cooling unit 86: PCB cooling case 88: Case body 89: Substrate storage room 90A, 90B, 90C: Exhaust duct 92: Upper case member 94: Lower case member 100: Power supply board 102: First inverter board 102a: Heat sink 104: Second inverter board 104a: Heat sink 106: Hood section 108: Opening 110: Connecting port 110a: Peripheral wall 111: Air passage 112: Front opening 113a: Inner lower surface 113b: Inner top surface 114: Rear opening 115: Front wall 116: PCB cooling fan 117: Front partition wall 118: Fan intake 119: Rear partition wall 120: Fan outlet 122: Drainage port 124: 1st shielding plate 124f: Front edge 124r: Posterior edge 126:Second shielding plate 126f: Front edge 126r: Posterior edge 128:Third shielding plate 128f: Front edge 128r: Posterior edge 142: Coil cooling case 146: Case body 146a: Side wall 150: Case No. 1 intake 152: Case No. 2 intake 154: Case exhaust port 224: 1st shielding plate 224f: Front edge 224r: Rear edge 226:Second shielding plate 226f: Front edge 226r: Posterior edge

Claims

1. Electrical components and an electrical component housing chamber that houses the electrical component; a fan that blows air into the electrical component housing chamber; an air passage having one end communicating with the outside via a first opening that opens upward and the other end connected to the electrical component housing chamber; a first partition wall disposed at a connection point between the air passage and the electrical component housing chamber; A cooking device comprising: The first partition wall extends upward from an inner lower surface of the air passage, An upper end of the first partition wall is located higher than an upper end of the electrical component.

2. The cooking device according to claim 1 , further comprising a second partition wall extending downward from an inner upper surface of the air passage at a position closer to the first opening than the first partition wall.

3. The cooking device according to claim 2 , wherein a lower end of the second partition wall is located lower than an upper end of the first partition wall.

4. a plurality of shielding plates disposed inside the air passage at positions closer to the first opening than the first partition wall; 2. The cooking device according to claim 1, wherein the lower end or upper end of one of the plurality of shielding plates is located lower than the upper end of another of the plurality of shielding plates and higher than the lower end of the other of the plurality of shielding plates.

5. The cooking device according to claim 4 , wherein each of the plurality of shielding plates is inclined in the same direction with respect to the direction of air flow inside the air passage.

6. The cooking device according to claim 5 , wherein each of the plurality of shielding plates is inclined with respect to a direction in which air flows inside the air passage so that a downstream portion of the shielding plate is positioned lower than an upstream portion of the shielding plate.

7. The cooking device according to claim 4 , wherein an upper end of the uppermost one of the plurality of shielding plates is connected to an inner upper surface of the air passage.

8. The cooking device according to claim 4 , wherein a lower end of the lowest one of the plurality of shielding plates is located lower than an upper end of the first partition wall.

9. 9. The cooking device according to claim 1, wherein when the fan is driven, the air flows from the electrical component housing chamber into the air passage and is discharged to the outside through the first opening.

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