JP2024078754A - Heating Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique which can block a liquid that has scattered vertically upward from the vicinity of a liquid exhaust port.

SOLUTION: A heating cooker includes: a cooker body; a top plate provided above the cooker body; a heating part, provided on the top plate, which heats a cooked object placed thereon; an electrical component which is driven when electric power is supplied; and a cooling unit, provided on the cooker body, which can cool the electrical component. The cooling unit includes: a cooling air passage which internally holds the electrical component; a fan which can generate an air flow in the cooling air passage; an air intake port for sucking air from the outside to the inside of the cooling air passage when the fan is driven; an air exhaust port for discharging air from the inside to the outside of the cooling air passage when the fan is driven; a liquid exhaust port for discharging a liquid that has entered the cooling air passage to the outside of the cooling air passage; and a plate member which is disposed vertically above the liquid exhaust port inside the cooling air passage.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2024,JPO&INPIT

Description

The technology disclosed in this specification relates to a cooking device.

Patent Document 1 discloses a cooking device that includes a cooking device body, a top plate provided on the top of the cooking device body, a heating section provided on the top plate for heating food placed on the top, electrical components that are driven by supplying power, and a cooling unit provided on the cooking device body and capable of cooling the electrical components. The cooling unit includes a cooling air passage that holds the electrical components inside, a fan that can generate an air flow in the cooling air passage, an air intake port for drawing air from the outside of the cooling air passage into the inside as the fan is driven, an exhaust port for discharging air from the inside of the cooling air passage to the outside as the fan is driven, a drain port for discharging liquid that has entered the cooling air passage to the outside of the cooling air passage, and a plate member that is arranged inside the cooling air passage at a position that does not overlap with the drain port in the vertical direction.

JP 2007-73452 A

Normally, liquid that seeps into the cooling air passage is collected near the drainage port. In this case, there is a risk that the liquid collected near the drainage port will be scattered upward by the liquid that falls afterwards. In Patent Document 1, a plate member is provided near the drainage port, but the plate member is located in a position that does not overlap with the drainage port in the vertical direction. For this reason, the plate member cannot block liquid that has scattered vertically upward from near the drainage port. This specification provides a technology that can block liquid that has scattered vertically upward from near the drainage port.

In a first aspect of the present technology, a cooking device includes a cooking device body, a top plate provided on the top plate, a heating section provided on the top plate for heating food placed on the top plate, electrical components driven by supplying electric power, and a cooling unit provided on the cooking device body for cooling the electrical components. The cooling unit includes a cooling air passage that holds the electrical components inside, a fan capable of generating an air flow in the cooling air passage, an air intake port for drawing air from the outside of the cooling air passage to the inside as the fan is driven, an exhaust port for discharging air from the inside of the cooling air passage to the outside as the fan is driven, a drain port for discharging liquid that has entered the cooling air passage to the outside of the cooling air passage, and a plate member disposed vertically above the drain port inside the cooling air passage.

According to the above configuration, a plate member is disposed vertically above the drainage port inside the cooling air passage. Even if liquid collected near the drainage port splashes upward, the plate member can block the liquid. This can prevent the splashed liquid from adhering to electrical components, etc., and therefore prevent the electrical components from deteriorating.

In a second aspect of the present technology, in the first aspect described above, the plate member may extend along the direction of air flow when the fan is driven.

The drain outlet connects the inside and outside of the cooling air passage. For this reason, air may flow into the cooling air passage or flow out of the cooling air passage through the drain outlet. This may cause the air flow to become turbulent near the drain outlet. If the air flow becomes turbulent, the pressure loss in the cooling air passage increases, and the flow rate of the air flowing through the cooling air passage may be reduced. According to the above configuration, the plate member disposed vertically above the drain outlet extends along the air flow direction. The plate member straightens the air flow near the drain outlet. This makes it possible to suppress the turbulence of the air near the drain outlet, thereby reducing the pressure loss in the cooling air passage. Therefore, the flow rate of the air flowing through the cooling air passage can be increased without increasing the rotation speed of the fan.

In a third aspect of the present technology, in the first or second aspect, the cooling unit may include a liquid reservoir capable of storing the liquid that has infiltrated into the cooling air passage. The liquid drain may be provided in the liquid reservoir so as to drain the liquid stored in the liquid reservoir.

When a relatively large amount of liquid seeps into the cooling air passage in a short period of time, the liquid collected in the drainage outlet is not immediately discharged from the drainage outlet, and there is a risk that the liquid collected in the drainage outlet will flow to an unintended location (for example, a location where electrical components are provided). With the above configuration, even if the liquid collected in the drainage outlet is not immediately discharged from the drainage outlet, the liquid reservoir can store the liquid near the drainage outlet. This makes it possible to prevent the liquid collected in the drainage outlet from flowing to an unintended location.

In a fourth aspect of the present technology, in any one of the first to third aspects, at least one of the intake port and the exhaust port may open toward the space above the top plate. When viewed vertically, the plate member may be offset from at least one of the intake port and the exhaust port.

In the above configuration, liquid spilled onto the top plate can flow down the top plate into at least one of the intake port and exhaust port. Liquid that flows into at least one of the intake port and exhaust port falls vertically downward due to gravity. Therefore, if the plate member and at least one of the intake port and exhaust port overlap when viewed vertically, liquid that flows into at least one of the intake port and exhaust port may accumulate on the upper surface of the plate member. According to the above configuration, the plate member is offset from at least one of the intake port and exhaust port when viewed vertically. Therefore, liquid that flows into at least one of the intake port and exhaust port can be prevented from accumulating on the upper surface of the plate member.

In a fifth aspect of the present technology, in any one of the first to fourth aspects, when viewed vertically, the upstream edge of the plate member may be offset upstream relative to the upstream edge of the drainage port.

If the upstream edge of the plate member is offset downstream from the upstream edge of the drainage port, there is a risk that the plate member may not be able to adequately block liquid that splashes from near the drainage port. With the above configuration, the upstream edge of the plate member is offset upstream from the upstream edge of the drainage port. This allows the plate member to adequately block liquid that splashes from near the drainage port.

In a sixth aspect of the present technology, in any one of the first to fifth aspects, when viewed vertically, the downstream edge of the plate member may be offset downstream relative to the downstream edge of the drainage port.

If the downstream edge of the plate member is offset upstream from the downstream edge of the drainage port, there is a risk that the plate member may not be able to adequately block liquid that splashes from near the drainage port. With the above configuration, the downstream edge of the plate member is offset downstream from the downstream edge of the drainage port. This allows the plate member to adequately block liquid that splashes from near the drainage port.

In a seventh aspect of the present technology, in any one of the first to sixth aspects, the downstream edge of the plate member may be spaced apart from the wall surface of the cooling air passage.

If the downstream edge of the plate member is connected to the wall surface of the cooling air passage (also called the passage wall surface), air will be pushed back from the downstream side to the upstream side at the connection between the plate member and the passage wall surface. As a result, pressure loss in the cooling air passage will become excessive. With the above configuration, the downstream edge of the plate member is separated from the passage wall surface, so air is prevented from being pushed back from the downstream side to the upstream side. In other words, air flows smoothly from the upstream side to the downstream side. Therefore, pressure loss in the cooling air passage can be reduced.

In an eighth aspect of the present technology, in any one of the first to seventh aspects, the drainage port may be located downstream of the electrical component.

The cooling air passage may be infiltrated by high-temperature liquid heated by the heating unit (e.g., broth spilled from a cooking utensil). Therefore, near the drain port, water vapor and steam may be generated from the high-temperature liquid collected in the drain port. If the drain port is located upstream of the electrical components, the water vapor and steam generated near the drain port may be sent downstream by the driving of the fan and may adhere to the electrical components. If the water vapor and steam adhere to the electrical components, the electrical components may deteriorate, for example, by causing rust in the electrical components. According to the above configuration, the drain port is located downstream of the electrical components. Therefore, the water vapor and steam generated near the drain port are sent downstream by the driving of the fan and are discharged from the exhaust port without passing through the electrical components. This makes it possible to prevent the water vapor and steam generated near the drain port from adhering to the electrical components, thereby preventing the electrical components from deteriorating.

In a ninth aspect of the present technology, in the eighth aspect, the upstream edge of the plate member may be connected to the bottom wall of the cooling air passage downstream of the electrical component.

According to the above configuration, the plate member can block the liquid flowing upstream along the bottom wall of the cooling air passage. This can prevent the liquid from flowing toward the electrical components. This can prevent the liquid from adhering to the electrical components, thereby preventing the electrical components from deteriorating.

In this specification, "food to be cooked" can mean cooking utensils such as pots, or it can mean the food that is to be cooked.

FIG. 2 is a diagram showing the heating and cooking system 2 according to the embodiment as viewed from the front left and above. FIG. 2 is an exploded view of the cooking device 6 according to the embodiment, viewed from above on the front right. FIG. 13 is an exploded view of a substrate cooling unit 76 according to the embodiment, as viewed from the upper front right. 1 is a diagram of a substrate cooling unit 76 according to an embodiment of the present invention, cut along a plane perpendicular to the left-right direction and viewed from the right. 13 is a bottom view of the substrate cooling unit 76 according to the embodiment. FIG. 1 is a diagram of an exhaust duct 90 according to an embodiment, cut along a plane perpendicular to the up-down direction and viewed from the front left and above. FIG. 1 is a diagram showing an exhaust duct 90 according to an embodiment of the present invention, cut along a plane perpendicular to the up-down direction and viewed from above. FIG. 13 is a view of the coil cooling unit 78 according to the embodiment, seen from the front left and above. 1 is a view of the coil cooling unit 78 according to the embodiment, cut along a plane passing through the drain port 174 and the opening 170, and viewed from the rear right. FIG. 13 is a top view of the coil cooling unit 78 according to the embodiment. 1 is a diagram illustrating an outline of how a cooking system 2 according to an embodiment operates; 13 is a diagram of a substrate cooling unit 76 according to a modified example, cut along a plane perpendicular to the left-right direction and viewed from the right.

(Example: Cooking system 2)
The cooking system 2 shown in FIG. 1 includes a ventilation device 4 and a cooking appliance 6. The ventilation device 4 is a so-called range hood. The ventilation device 4 is disposed above the cooking appliance 6. The ventilation device 4 includes a sirocco fan (not shown) and sucks in oily smoke and the like generated by the cooking appliance 6 and discharges it to the outdoors. The cooking appliance 6 is a built-in type cooking appliance that is incorporated into a system kitchen (not shown). In the drawings, the front, back, up, down, left and right directions are defined based on the cooking appliance 6 incorporated into the system kitchen. The up and down directions here specifically refer to the up and down directions along the vertical direction.

The cooking device 6 includes a cooking device body 8, 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.

As shown in FIG. 2, the cooking device main body 8 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 with an opening at the top. The exposed portion 26 is provided at the front of the housing 24. The exposed portion 26 is exposed to the front of the system kitchen (not shown). The plurality of through holes 28 are provided at the upper portion of the exposed portion 26 in the housing 24. The plurality of through holes 28 penetrate the housing 24 in the front-rear direction. The plurality of through holes 28 are not exposed to the front of the system kitchen, but are connected to the space in front of the system kitchen through a gap 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.

The top plate 10 is exposed to the worktop (not shown) of the system kitchen. The top plate 10 comprises 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 by screws or the like. The top plate 10 can be removed from the cooking appliance body 8 by releasing the fixation between the frame 34 and the top plate base 30.

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.

The gas stove 12 includes a trivet 38, a burner 40, a temperature sensor 42, a gas supply line 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 line 44. The supply of fuel gas to the burner 40 is switched between permitted and prohibited states by an electromagnetic valve (not shown). When the igniter is operated in a state in which the supply of fuel gas to the burner 40 is permitted, the combustion of the fuel gas begins. That is, the gas stove 12 is ignited. The gas stove 12 can heat the food to be cooked placed on the trivet 38 by the combustion gas generated when the fuel gas is burned. The temperature sensor 42 detects the temperature of the food to be cooked placed on the trivet 38. When the supply of fuel gas to the burner 40 is prohibited, the combustion of the fuel gas ends. That is, the gas stove 12 is extinguished.

The first IH stove 14 includes a first placement portion 46, a first coil base 48, a first IH coil 50, and a temperature sensor (not shown). The first placement portion 46 is made of a material that is permeable to a magnetic field (e.g., crystallized glass). In this embodiment, a part of the glass plate 32 functions as the first placement portion 46. In the drawing, the part of the glass plate 32 that functions as the first placement portion 46 is shown as 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 disposed directly below the first placement 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 inductively heat the food placed on the first placement portion 46 by using this high-frequency magnetic field. The temperature sensor detects the temperature of the food placed on the first placement portion 46 through the top plate 10. For simplicity, the first IH coil 50 is not shown in any drawings other than FIG. 2.

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 is omitted. Also, in the drawings other than FIG. 2, the second IH coil 56 is not shown for simplification.

The grill chamber 20 is housed 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 house 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 housed in the grill chamber 20. The grill chamber 20 is equipped with a grill duct 60 for discharging oily smoke and the like generated within the grill chamber 20. A grill exhaust port 62 is provided at the rear upper portion 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.

As shown in FIG. 1, the stove operation unit 18 is provided on the left side of the grill door 58 in the exposed portion 26. The stove operation unit 18 includes a power switch 64 for the cooking appliance 6, three heat amount operation units 66a, 66b, and 66c, and a panel operation unit 68. The heat amount operation unit 66a can be used to turn on and off the gas stove 12 and adjust the amount of heat of the gas stove 12. The heat amount operation unit 66b can be used to turn on and off the first IH stove 14 and adjust the amount of heat of the first IH stove 14. The heat amount operation unit 66c can be used to turn on and off the second IH stove 16 and adjust the amount of heat of the second IH stove 16. The panel operation unit 68 also includes a display and a number of switches. The panel operation unit 68 allows various operations (e.g., settings related to automatic cooking) related to the gas stove 12, the first IH stove 14, and the second IH stove 16 to be performed. The panel operation unit 68 can be stored inside the cooking device main body 8 as shown in FIG. 2.

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 can be used to turn on and off the grill burner (not shown) and adjust the amount of heat of the grill burner. A display and a number of switches are arranged on the panel operation unit 72. Various operations related to the grill chamber 20 can be performed on the panel operation unit 72. The panel operation unit 72 can be stored inside the cooker body 8, similar to the panel operation unit 68.

As shown in FIG. 2, the cooking device 6 includes a substrate cooling unit 76 and a coil cooling unit 78.

(Substrate cooling unit 76)
The board cooling unit 76 includes a board cooling case 86. The board cooling case 86 is contained 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 by screws or the like. The board cooling case 86 can be removed from the housing 24 by releasing the fixing by the screws or the like. This makes the board cooling unit 76 detachable from the cooker body 8.

3, the substrate cooling case 86 includes a case body 88 and an exhaust duct 90. The case body 88 includes an upper case member 92 and a lower case member 94. The exhaust duct 90 includes a left duct member 96 and a right duct member 98. The upper case member 92, the lower case member 94, the left duct member 96, and the right duct member 98 are formed separately from each other. In this embodiment, the upper case member 92 and the lower case member 94 are connected to each other by bolts and nuts (not shown). The left duct member 96 and the right duct member 98 are connected to each other by snap fitting. The case body 88 and the exhaust duct 90 are connected to each other by snap fitting. The upper case member 92 and the lower case member 94, the left duct member 96 and the right duct member 9, and/or the case body 88 and the exhaust duct 90 may be connected to each other by screws or the like.

The case body 88 contains 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 and each electrical component of the cooking appliance 6 (for example, 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 an external power source such as a commercial power source and supply it to each electrical component of the cooking appliance 6. The first inverter board 102 is electrically connected to the first IH coil 50 (see FIG. 2). The second inverter board 104 is electrically connected to the second IH coil 56 (see FIG. 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 and the second IH coil 56, respectively. The heat sink 102a of the first inverter board 102 is disposed near the rear end of the first inverter board 102. The heat sink 104a of the second inverter board 104 is disposed near the rear end of the second inverter board 104. Although not shown, a through hole is provided in the rear of the case 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.

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 toward the front. A connection port 110 for connecting the exhaust duct 90 is provided at the rear of the case body 88. The connection port 110 opens toward the rear. The exhaust duct 90 has a duct body 112 and an exhaust port 114. The duct body 112 curves from the bottom to the top as it moves from the front to the rear. The exhaust port 114 is formed at the rear upper part of the duct body 112. The exhaust port 114 opens toward the top. The exhaust port 114 is connected to the space above the top plate 10 (see FIG. 1) via the exhaust port cover 36 (see FIG. 1).

(Cooling Structure of Substrate Cooling Unit 76)
As shown in FIG. 5, the board cooling unit 76 includes a board cooling fan 116. The board cooling fan 116 is attached to the lower part of the case body 88. The board cooling fan 116 is disposed adjacent to the hood part 106. 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 8 through 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 part 106. The fan outlet port 120 communicates with the inside of the board cooling case 86 through the opening 108.

The board cooling fan 116 is driven, for example, when the power of the cooking appliance 6 is turned on, and is stopped when the power of the cooking appliance 6 is turned off. As shown in FIG. 4, when the board cooling fan 116 is driven, air is sucked from the space below the cooking appliance body 8 (see FIG. 1) through an air intake hole (not shown) into the fan intake port 118. Then, the air is sent out rearward from the fan outlet 120. The air sent out from the fan outlet 120 flows into the inside of the case body 88 through the opening 108. As a result, the air inside the case body 88 is pushed out toward the connection port 110 and flows into the exhaust duct 90. The air that has flowed into the exhaust duct 90 is discharged from the exhaust port 114 to the outside of the exhaust duct 90.

In this way, 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 can use this air flow to exhaust heat generated by each board from the exhaust port 114. 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 called "board cooling air A1". The internal space of the board cooling case 86 is also called "board cooling air passage P1". In FIG. 4, the board cooling air A1 is illustrated generally using arrows. In this embodiment, the upstream side and downstream side in the flow direction of the board cooling air A1 may be simply called the "upstream side" and the "downstream side", respectively.

(Drainage Structure of Substrate Cooling Unit 76)
The exhaust duct 90 further includes a liquid reservoir recess 122, a drain port 124, a plate member 126, and a return rib 128. The liquid reservoir recess 122 is formed by downwardly recessing the bottom wall 112a of the duct body 112. The liquid reservoir recess 122 is disposed in a midsection of the duct body 112. The liquid drain port 124 is provided at the bottommost portion of the liquid reservoir recess 122.

As shown in FIG. 6, the liquid reservoir recess 122 has a front inclined surface 130, a rear inclined surface 132, a left inclined surface 134, and a right inclined surface 136. The drain port 124 is defined by the lower edges of the front inclined surface 130, the rear inclined surface 132, the left inclined surface 134, and the right inclined surface 136. The front inclined surface 130, the rear inclined surface 132, the left inclined surface 134, and the right inclined surface 136 are each inclined upward as they move away from the drain port 124. When liquid enters the duct body 112, the liquid is collected in the liquid reservoir recess 122. In the liquid reservoir recess 122, the liquid is guided to the drain port 124 along the front inclined surface 130, the rear inclined surface 132, the left inclined surface 134, and the right inclined surface 136. As a result, the liquid is discharged from the drain port 124 to the outside of the substrate cooling air passage P1 without remaining in the duct body 112. The bottom wall (not shown) of the housing 24 (see FIG. 1) extends below the drain port 124. The liquid discharged from the drain port 124 falls onto the bottom wall of the housing 24 and accumulates inside the housing 24. The liquid accumulated inside the housing 24 is removed, for example, during maintenance of the cooking appliance 6.

The plate member 126 includes a left plate member 138 and a right plate member 140. The left plate member 138 is part of the left duct member 96 and is connected to the left wall 112b of the duct body 112. The right plate member 140 is part of the right duct member 98 and is connected to the right wall 112c of the duct body 112. The plate member 126 is disposed above the drain port 124. The plate member 126 spreads along the flow direction of the substrate cooling air A1 (see FIG. 4). In addition, the front (upstream) edge 126f of the plate member 126 is separated from the wall surface of the duct body 112. The rear (downstream) edge 126r of the plate member 126 is separated from the wall surface of the duct body 112. The plate member 126 can be considered as a straightening plate that straightens the flow of the substrate cooling air A1, and can also be considered as a shielding plate that blocks liquid that has splashed from near the drainage port 124.

As shown in FIG. 7, when viewed from above, the drain port 124 and the entire plate member 126 are offset forward (upstream) from the exhaust port 114. When viewed from above, the front (upstream) edge 126f of the plate member 126 is offset forward (upstream) from the front (upstream) edge 124f of the drain port 124. When viewed from above, the rear (downstream) edge 126r of the plate member 126 is offset rear (downstream) from the rear (downstream) edge 124r of the drain port 124.

The return rib 128 shown in FIG. 4 is provided along the left-right direction on the upper wall 112d of the duct body 112. The return rib 128 is approximately perpendicular to the upper wall 112d of the duct body 112. The return rib 128 prevents liquid that has entered the duct body 112 from the exhaust port 114 from flowing down the upper wall 112d of the duct body 112 into the case body 88. The tip 128a of the return rib 128 is offset forward (upstream) from the exhaust port 114. The tip 128a of the return rib 128 is offset rearward (downstream) from the rear (downstream) edge 126r of the plate member 126.

(Positional Relationship of Each Part in Substrate Cooling Unit 76)
The board cooling fan 116 is disposed upstream of the power supply board 100 (see FIG. 3), the first inverter board 102 (see FIG. 3), and the second inverter board 104. The liquid reservoir recess 122, the drain port 124, and the plate member 126 are disposed downstream of the power supply board 100, the first inverter board 102, and the second inverter board 104. The board cooling fan 116 is disposed below the drain port 124.

(Coil cooling unit 78)
2, the coil cooling unit 78 includes a coil cooling case 142 and a coil cooling fan 144. 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. The coil cooling fan 144 is attached to the coil cooling case 142.

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 by screws or the like. The coil cooling case 142 can be removed from the housing 24 by releasing the fixing by the screws or the like. This makes the coil cooling unit 78 detachable from the cooking appliance body 8.

8, the coil cooling case 142 includes a case body 146, a fan cover 148, an exhaust auxiliary member 150, a case intake port 152, and a case exhaust port 154. The coil cooling fan 144 is attached to the front lower part of the case body 146. The fan cover 148 is attached to the front lower part of the case body 146 so as to cover the coil cooling fan 144. The exhaust auxiliary member 150 is attached to the rear upper part of the case body 146. The case intake port 152 is defined between the case body 146 and the fan cover 148, and is disposed at the front part of the coil cooling case 142. The case intake port 152 opens toward the front. The case intake port 152 is connected to the space in front of the cooking device body 8 through a plurality of through holes 28 (see FIG. 1). The case exhaust port 154 is defined between the case body 146 and the exhaust auxiliary member 150, and is disposed at the rear part of the case body 146. The case exhaust port 154 opens upward. The case exhaust port 154 is connected to the space above the top plate 10 (see FIG. 1) via the exhaust port cover 36 (see FIG. 1).

The side wall 146a of the case body 146 has a notch 156 for passing a wire harness (not shown). However, the gap between the notch 156 and the wire harness is sealed with a sealing member (e.g., sponge) (not shown). In addition, the gap between the upper end of the side wall 146a of the case body 146 and the top plate 10 (see FIG. 1) is sealed with a sealing member (e.g., packing) (not shown).

The case body 146 has a plurality of coil support parts 158. The plurality of coil support parts 158 include three coil support parts 158a that support the first coil base 48 and three coil support parts 158b that support the second coil base 54.

9, each of the coil support parts 158 includes a sleeve 160, a guide pin 162, and a compression spring 164. The sleeve 160 is integrally formed with the case body 146. The sleeve 160 protrudes upward from the bottom wall 146b of the case body 146. The guide pin 162 is fixed to the first coil base 48 (or the second coil base 54). The guide pin 162 is inserted into the sleeve 160. The compression spring 164 is attached to the outer circumferential surface of the sleeve 160. The compression spring 164 biases the guide pin 162 upward relative to the case body 146. Each of the coil support parts 158 separates the first coil base 48 (or the second coil base 54) from the bottom wall 146b of the case body 146 by the biasing force of the compression spring 164. In addition, each of the multiple coil support parts 158 presses the first coil base 48 (or the second coil base 54) against the top plate 10 by the biasing force of the compression spring 164.

(Cooling Structure of Coil Cooling Unit 78)
The coil cooling fan 144 includes a fan inlet 166 and a fan outlet 168. The fan inlet 166 opens downward. The fan inlet 166 communicates with the space in front of the cooker body 8 (see FIG. 1) via a plurality of through holes 28 (see FIG. 1) and the case inlet 152. The fan outlet 168 opens rearward. The fan outlet 168 is aligned with an opening 170 defined between the case body 146 and the fan cover 148. The fan outlet 168 communicates with the interior of the case body 146 via the opening 170.

The coil cooling fan 144 is driven, for example, when heating is started in at least one of the first IH stove 14 and the second IH stove 16. The coil cooling fan 144 is stopped when heating is finished in both the first IH stove 14 and the second IH stove 16. When the coil cooling fan 144 is driven, air is sucked from the space in front of the cooking device body 8 (see FIG. 1) through the multiple through holes 28 (see FIG. 1) and the case intake 152 into the fan intake 166. Then, the air is sent out rearward from the fan outlet 168. The air sent out from the fan outlet 168 flows into the inside of the case body 146 along the upper surface of the fan cover 148. As a result, the air inside the case body 146 is pushed out toward the case exhaust 154 and discharged from the case exhaust 154 to the outside of the case body 146. The air inside the case body 146 is discharged toward the space above the top plate 10.

In this way, when the coil cooling fan 144 is driven, an air flow is generated in the internal space of the coil cooling case 142. The coil cooling unit 78 can use this air flow to exhaust the heat generated in each coil from the case exhaust port 154. In this embodiment, the air flow generated in the internal space of the coil cooling case 142 when the coil cooling fan 144 is driven is also called "coil cooling air A2". The internal space of the coil cooling case 142 is also called "coil cooling air passage P2". In FIG. 9, the coil cooling air A2 is illustrated diagrammatically using an arrow. In this embodiment, the upstream side and downstream side in the flow direction of the coil cooling air A2 may be simply called the "upstream side" and the "downstream side", respectively.

(Drainage structure of coil cooling unit 78)
A liquid reservoir tray 172 and a drain port 174 are provided at the rear of the case body 146. The liquid reservoir tray 172 includes a tray body 176 and a liquid reservoir recess 178. The liquid reservoir recess 178 is formed by recessing a bottom wall 176a of the tray body 176 downward. The liquid drain port 174 is disposed at the bottom of the liquid reservoir recess 178. The bottom wall 176a of the tray body 176 is provided with a first inclined surface 180 that is inclined upward as it moves away from the liquid reservoir recess 178. The bottom wall 178a of the liquid reservoir recess 178 is provided with a second inclined surface 182 that is inclined upward as it moves away from the drain port 174. For example, when liquid enters the tray body 176, the liquid flows along the first inclined surface 180 and is guided to the liquid reservoir recess 178. In the liquid storage recess 178, the liquid flows along the second inclined surface 182 and is guided to the drainage outlet 174. As a result, the liquid is discharged from the drainage outlet 174 to the outside of the coil cooling air passage P2 without remaining in the tray body 176. Note that the bottom wall (not shown) of the housing 24 (see FIG. 1) extends below the drainage outlet 174. The liquid discharged from the drainage outlet 174 falls onto the bottom wall of the housing 24 and accumulates inside the housing 24. The liquid accumulated inside the housing 24 is removed, for example, during maintenance of the cooking appliance 6.

The exhaust auxiliary member 150 includes an auxiliary plate 184 that extends downward from the front edge of the case exhaust port 154. The auxiliary plate 184 is inclined from front to rear as it moves from top to bottom. By providing the auxiliary plate 184, the coil cooling air passage P2 is defined so that it extends from bottom to top just before the case exhaust port 154. The auxiliary plate 184 helps the coil cooling air A2 exhausted from the case exhaust port 154 to flow from bottom to top.

(Positional Relationship of Each Part in Coil Cooling Unit 78)
As shown in Fig. 10, when viewed from above, the entire drain port 174 is offset forward (upstream) with respect to the case exhaust port 154. Also, when viewed from above, the case intake port 152, the coil cooling air passage P2, and the case exhaust port 154 are aligned along a straight line L1. The straight line L1 is a straight line connecting the center of the case intake port 152 when viewed from above and the center of the case exhaust port 154 when viewed from above. The straight line L1 extends approximately parallel to the front-rear direction. Here, "the straight line L1 is approximately parallel to the front-rear direction" means that the inclination angle of the straight line L1 with respect to the front-rear direction is 10° or less.

As shown in FIG. 9, the coil cooling fan 144 is disposed upstream of the first coil base 48 and the second coil base 54. That is, the coil cooling fan 144 is disposed upstream of the first IH coil 50 (see FIG. 2) and the second IH coil 56 (see FIG. 2). In addition, the liquid reservoir tray 172 and the drain port 174 are disposed downstream of the first coil base 48 and the second coil base 54. That is, the liquid reservoir tray 172 and the drain port 174 are disposed downstream of the first IH coil 50 and the second IH coil 56.

(Features related to intake and exhaust of coil cooling unit 78)
As shown in Fig. 11, the cooking system 2 of this embodiment is incorporated into a so-called wall-mounted system kitchen 200. A wall surface 202 extends behind the system kitchen 200. In the example of Fig. 11, the power of the ventilation device 4 and the cooking appliance 6 is turned on, and cooking is being performed using the gas stove 12. Cooking is also being performed using the grill chamber 20 (see Fig. 2).

The ventilation device 4 draws in air from the space above the top plate 10. The gas stove 12 emits combustion gas into the space above the top plate 10. The grill chamber 20 emits combustion gas from the grill exhaust port 62 (see FIG. 2) into the space above the top plate 10. This causes air to flow from the bottom to the top in the space above the top plate 10. In accordance with this flow, air also flows from the front to the rear in the space in front of the cooker body 8. In this embodiment, these air flows that accompany the operation of the cooking system 2 are collectively referred to as "draft D." In FIG. 11, the draft D is illustrated diagrammatically using an arrow.

As mentioned above, the case intake 152 opens toward the space in front of the cooker body 8. The case exhaust 154 opens toward the space above the top plate 10. Therefore, the coil cooling unit 78 can smoothly intake and exhaust air in accordance with the draft D. This increases the volume of the coil cooling air A2. In particular, in the system kitchen 200 shown in FIG. 11, the draft D generated in the space in front of the cooker body 8 is intensified by the wall surface 202. Therefore, in the coil cooling unit 78 of this embodiment, the effect of increasing the volume of the coil cooling air A2 by utilizing the draft D is more pronounced.

(Modification)
The cooking system 2 does not necessarily have to include the ventilation device 4. Alternatively, the cooking system 2 may include another ventilation device (for example, a ventilation fan) instead of the ventilation device 4.

The cooking device 6 may be a free-standing cooking device that is used without being incorporated into a system kitchen.

The cooking device 6 may include an induction cooker instead of the gas cooker 12. Alternatively, the cooking device 6 may include two gas cookers instead of the first induction cooker 14 and the second induction cooker 16.

The cooking device 6 does not have to include a grill compartment 20. Alternatively, the cooking device 6 may include another heating compartment (e.g., an oven compartment, a microwave compartment) instead of the grill compartment 20.

The cooking device 6 may include a cooling unit for cooling electrical components (e.g., 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).

The cooking appliance 6 may be incorporated into a system kitchen of a different type from the system kitchen 200 (e.g., a counter kitchen or an island kitchen).

The substrate cooling unit 76 may not be detachable from the cooking appliance body 8. For example, the substrate cooling case 86 may be integrated into the housing 24.

The location and orientation of the fan intake 118 may be changed as appropriate. For example, the fan intake 118 may be located at the rear of the cooking appliance body 8 and may open toward the rear.

The location and orientation of the exhaust port 114 may be changed as appropriate. For example, the exhaust port 114 may be located at the front of the cooking device body 8 and may open toward the front.

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, for example, downstream of the drainage port 124.

The board cooling fan 116 may generate an air flow in the board cooling air passage P1 in the opposite direction to the board cooling air A1.

The substrate cooling unit 76 may not have a liquid reservoir recess 122. In this case, the drain port 124 may be formed by penetrating the bottom wall 112a of the duct body 112.

The drainage port 124 does not have to be located at the bottom of the liquid storage recess 122. For example, the drainage port 124 may be located in the middle of the rear inclined surface 132. Also, when viewed from above, the drainage port 124 and the exhaust port 114 may overlap each other.

As shown in FIG. 12, the substrate cooling unit 76 may include a plate member 226 instead of the plate member 126. The plate member 226 differs from the plate member 126 in that the front (upstream) edge 226f is connected to the bottom wall 112a of the duct body 112. The plate member 226 is smoothly connected to the bottom wall 112a of the duct body 112. The plate member 226 can block the liquid that attempts to flow forward over the front inclined surface 130 of the liquid reservoir recess 122. This can prevent the liquid from penetrating into the case body 88. In addition, the rear (downstream) edge 226r of the plate member 226 is in the same position as the edge 126r of the plate member 126. Note that in FIG. 12, components other than the plate member 226 are given the same reference numerals as in the embodiment.

The arrangement and shape of the plate member 126 may be changed as appropriate. For example, the plate member 126 may not extend along the flow direction. When viewed from above, the plate member 126 may overlap the exhaust port 114. When viewed from above, the edge 126f of the plate member 126 may be offset rearward (downstream) from the edge 124f of the drain port 124. When viewed from above, the edge 126r of the plate member 126 may be offset forward (upstream) from the edge 124r of the drain port 124.

The coil cooling unit 78 may not be detachable from the cooking appliance body 8. For example, the coil cooling case 142 may be integrated into the housing 24.

The location and orientation of the case air inlet 152 may be changed as appropriate. For example, the case air inlet 152 may be located at the rear of the cooking appliance body 8 and may open toward the rear.

The location and orientation of the case exhaust port 154 may be changed as appropriate. For example, the case exhaust port 154 may be located at the front of the cooking device body 8 and may open toward the front.

The coil cooling fan 144 may be positioned, for example, downstream of the drain outlet 174.

The coil cooling fan 144 may generate an air flow in the coil cooling air passage P2 in the opposite direction to the coil cooling air A2.

The coil cooling unit 78 may not have a liquid reservoir tray 172. In this case, the drain port 174 may be formed by penetrating the bottom wall 146b of the case body 146.

The drainage port 174 does not have to be located at the bottom of the liquid reservoir recess 178. For example, the drainage port 174 may be located on a side wall of the liquid reservoir recess 178. Also, when viewed from above, the drainage port 174 may overlap the case exhaust port 154.

The shape of the coil cooling air passage P2 may be changed as appropriate. For example, when viewed from above, the coil cooling air passage P2 may have a winding shape.

(Correspondence)
In one or more embodiments, the heating cooker 6 comprises a cooker main body 8, a top plate 10 provided on the top plate 10, a gas stove 12, a first IH stove 14, and a second IH stove 16 (examples of heating units) provided on the top plate 10 and used to heat food placed above, a power supply board 100, a first inverter board 102, and a second inverter board 104 (examples of electrical components) that are driven by the supply of power, and a board cooling unit 76 (an example of a cooling unit) provided in the cooker main body 8 and capable of cooling the power supply board 100, the first inverter board 102, and the second inverter board 104. The board cooling unit 76 comprises a board cooling air passage P1 (an example of a cooling air passage) that holds the power supply board 100, the first inverter board 102, and the second inverter board 104 therein, a board cooling fan 116 (an example of a fan) capable of generating an air flow in the board cooling air passage P1, a fan air intake 118 (an example of an air intake) for drawing air from the outside of the board cooling air passage P1 to the inside as the board cooling fan 116 is driven, an exhaust port 114 for discharging air from the inside of the board cooling air passage P1 to the outside as the board cooling fan 116 is driven, a liquid drain port 124 for discharging liquid that has entered the inside of the board cooling air passage P1 to the outside of the board cooling air passage P1, and a plate member 126 arranged vertically above the liquid drain port 124 inside the board cooling air passage P1.

According to the above configuration, inside the board cooling air passage P1, a plate member 126 is disposed vertically above the drainage port 124. Even if liquid collected near the drainage port 124 splashes upward, the plate member 126 can block the liquid. This can prevent the splashed liquid from adhering to the power supply board 100, the first inverter board 102, the second inverter board 104, etc., and therefore can prevent the power supply board 100, the first inverter board 102, and the second inverter board 104 from deteriorating.

In one or more embodiments, the plate member 126 extends along the direction of air flow when the board cooling fan 116 is driven.

The drain port 124 connects the inside and outside of the substrate cooling air passage P1. Therefore, air may flow into the substrate cooling air passage P1 or flow out of the substrate cooling air passage P1 through the drain port 124. This may cause the air flow to be disturbed near the drain port 124. If the air flow is disturbed, the pressure loss in the substrate cooling air passage P1 increases, and the air volume of the substrate cooling air A1 (an example of air flowing through the cooling air passage) may be reduced. According to the above configuration, the plate member 126 arranged vertically above the drain port 124 spreads along the air flow direction. The plate member 126 straightens the air flow near the drain port 124. This can suppress the air turbulence near the drain port 124, thereby reducing the pressure loss in the substrate cooling air passage P1. Therefore, the air volume of the substrate cooling air A1 can be increased without increasing the rotation speed of the substrate cooling fan 116.

In one or more embodiments, the substrate cooling unit 76 includes a liquid reservoir recess 122 (an example of a liquid reservoir) capable of storing liquid that has infiltrated into the substrate cooling air passage P1. A liquid drain port 124 is provided in the liquid reservoir recess 122 so as to drain the liquid stored in the liquid reservoir recess 122.

When a relatively large amount of liquid enters the substrate cooling air passage P1 in a short period of time, the liquid collected in the drainage port 124 is not immediately discharged from the drainage port 124, and there is a risk that the liquid collected in the drainage port 124 will flow to an unintended location. With the above configuration, even if the liquid collected in the drainage port 124 is not immediately discharged from the drainage port 124, the liquid can be stored near the drainage port 124 by the liquid storage recess 122. This makes it possible to prevent the liquid collected in the drainage port 124 from flowing to an unintended location.

In one or more embodiments, the exhaust port 114 (an example of at least one of an intake port and an exhaust port) opens toward the space above the top plate 10. When viewed vertically, the plate member 126 is offset relative to the exhaust port 114.

In the above configuration, liquid spilled onto the top plate 10 can flow along the top plate 10 into the exhaust port 114. The liquid that flows into the exhaust port 114 falls vertically downward due to gravity. Therefore, if the plate member 126 and the exhaust port 114 overlap when viewed vertically, the liquid that flows into the exhaust port 114 may accumulate on the upper surface of the plate member 126. According to the above configuration, the plate member 126 is offset with respect to the exhaust port 114 when viewed vertically. Therefore, it is possible to prevent the liquid that flows into the exhaust port 114 from accumulating on the upper surface of the plate member 126.

In one or more embodiments, when viewed along the vertical direction, the upstream edge 126f of the plate member 126 is offset upstream relative to the upstream edge 124f of the drain port 124.

If the upstream edge 126f of the plate member 126 is offset downstream from the upstream edge 124f of the drainage port 124, there is a risk that the plate member 126 may not be able to adequately block liquid that has splashed from near the drainage port 124. With the above configuration, the upstream edge 126f of the plate member 126 is offset upstream from the upstream edge 124f of the drainage port 124. Therefore, the plate member 126 can adequately block liquid that has splashed from near the drainage port 124.

In one or more embodiments, when viewed along the vertical direction, the downstream edge 126r of the plate member 126 is offset downstream relative to the downstream edge 124r of the drain port 124.

If the downstream edge 126r of the plate member 126 is offset upstream from the downstream edge 124r of the drainage port 124, there is a risk that the plate member 126 may not be able to adequately block liquid that has splashed from near the drainage port 124. With the above configuration, the downstream edge 126r of the plate member 126 is offset downstream from the downstream edge 124r of the drainage port 124. Therefore, the plate member 126 can adequately block liquid that has splashed from near the drainage port 124.

In one or more embodiments, the downstream edge 126r of the plate member 126 is away from the wall surface of the board cooling air passage P1.

If the downstream edge 126r of the plate member 126 is connected to the passage wall, air will be pushed back from the downstream side to the upstream side at the connection between the plate member 126 and the passage wall. As a result, the pressure loss in the board cooling air passage P1 will be excessive. With the above configuration, the downstream edge 126r of the plate member 126 is separated from the passage wall, so air is prevented from being pushed back from the downstream side to the upstream side. In other words, air flows smoothly from the upstream side to the downstream side. Therefore, the pressure loss in the board cooling air passage P1 can be reduced.

In one or more embodiments, the drain port 124 is located downstream of the power supply board 100, the first inverter board 102, and the second inverter board 104.

The board cooling air passage P1 may be infiltrated by high-temperature liquid heated by the gas stove 12, the first IH stove 14, and the second IH stove 16. For this reason, near the drain outlet 124, water vapor and steam may be generated from the high-temperature liquid collected in the drain outlet 124. If the drain outlet 124 is located upstream of the power supply board 100, the first inverter board 102, and the second inverter board 104, the water vapor and steam generated near the drain outlet 124 may be sent downstream by the drive of the board cooling fan 116 and may adhere to the power supply board 100, the first inverter board 102, and the second inverter board 104. If water vapor and steam adhere to the power supply board 100, the first inverter board 102, and the second inverter board 104, the power supply board 100, the first inverter board 102, and the second inverter board 104 may deteriorate. According to the above configuration, the drain port 124 is disposed downstream of the power supply board 100, the first inverter board 102, and the second inverter board 104. Therefore, the water vapor and steam generated near the drain port 124 are sent downstream by driving the board cooling fan 116 and are discharged from the exhaust port 114 without passing through the power supply board 100, the first inverter board 102, and the second inverter board 104. This makes it possible to prevent the water vapor and steam generated near the drain port 124 from adhering to the power supply board 100, the first inverter board 102, and the second inverter board 104, and therefore to prevent the power supply board 100, the first inverter board 102, and the second inverter board 104 from deteriorating.

In one or more embodiments, the upstream edge 126f of the plate member 126 is connected to the bottom wall 112a of the duct body 112 (an example of the bottom wall of the cooling air passage) downstream of the power supply board 100, the first inverter board 102, and the second inverter board 104.

According to the above configuration, the plate member 126 can block the liquid flowing upstream along the bottom wall 112a of the duct body 112 (an example of the bottom wall of the cooling air passage). This can prevent the liquid from flowing toward the power supply board 100, the first inverter board 102, and the second inverter board 104. This can prevent the liquid from adhering to the power supply board 100, the first inverter board 102, and the second inverter board 104, thereby preventing the power supply board 100, the first inverter board 102, and the second inverter board 104 from deteriorating.

The technical elements described in this specification or drawings have technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technologies illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of those objectives is itself technically useful.

2: Cooking system 4: Ventilation device 6: Cooking appliance 8: Cooking appliance body 10: Top plate 12: Gas stove 14: First IH stove 16: Second IH stove 18: Stove operation unit 20: Grill chamber 22: Grill operation unit 24: Housing 26: Exposed portion 28: Multiple through holes 30: Top plate base 32: Glass plate 34: Frame 36: Exhaust port cover 38: Trivet 40: Stove burner 42: Temperature sensor 44: Gas supply path 46: First mounting portion 48: First coil base 50: First IH coil 52: Second mounting portion 54: Second coil base 56: Second IH coil 58: Grill door 60: Grill duct 62: Grill exhaust port 64: Power switch 66a, 66b, 66c: Heat amount operation unit 68 : Panel operation section 70 : Heat amount operation section 72 : Panel operation section 76 : Board cooling unit 78 : Coil cooling unit 86 : Board cooling case 88 : Case body 90 : Exhaust duct 92 : Upper case member 94 : Lower case member 96 : Left duct member 98 : Right duct 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 : Connection port 112 : Duct body 112a : Bottom wall of duct body 112b : Left wall of duct body 112c : Right wall of duct body 112d : Upper wall of duct body 114 : Exhaust port 116 : Board cooling fan 118 : Fan intake port 120 : Fan air outlet 122 : Liquid reservoir recess 124 : Drain port 124f : Front (upstream) edge 124r of drain port : Rear (downstream) edge 126 of drain port : Plate member 126f : Front (upstream) edge 126r of plate member : Rear (downstream) edge 128 of plate member : Return rib 128a : Tip 130 : Front inclined surface 132 : Rear inclined surface 134 : Left inclined surface 136 : Right inclined surface 138 : Left plate member 140 : Right plate member 142 : Coil cooling case 144 : Coil cooling fan 146 : Case body 146a : Side wall 146b of case body : Bottom wall 148 of case body : Fan cover 150 : Exhaust auxiliary member 152 : Case intake port 154 : Case exhaust port 156 : Notches 158, 158a, 158b : Multiple coil support portions 160 : Sleeve 162 : Guide pin 164 : Compression spring 166 : Fan intake port 168 : Fan exhaust port 170 : Opening 172 : Liquid reservoir tray 174 : Liquid drain port 176 : Tray body 176a : Bottom wall 178 of tray body : Liquid reservoir recess 178a : Bottom wall 180 of liquid reservoir recess : First inclined surface 182 : Second inclined surface 184 : Auxiliary plate 200 : System kitchen 202 : Wall surface 226 : Plate member 226f : Front (upstream) edge portion 226r of plate member : Rear (downstream) edge portion A1 of plate member : Substrate cooling air A2 : Coil cooling air D : Draft P1 : Substrate cooling air passage P2 : Coil cooling air passage

Claims (9)

A cooking device body,
A top plate provided on an upper portion of the cooking device body;
A heating unit provided on the top plate for heating an object to be cooked placed thereon;
An electrical component that is driven by supplying electric power;
a cooling unit provided in the cooking appliance body and capable of cooling the electrical components;
The cooling unit comprises:
a cooling air passage for holding the electrical components therein;
a fan capable of generating an air flow in the cooling air passage;
an intake port for drawing air from the outside to the inside of the cooling air passage as the fan is driven;
an exhaust port for discharging air from inside the cooling air passage to the outside as the fan is driven;
a liquid drain port for draining liquid that has entered the inside of the cooling air passage to the outside of the cooling air passage;
a plate member disposed vertically above the liquid drainage port inside the cooling air passage. The cooking device of claim 1, wherein the plate member extends along the direction of air flow when the fan is driven. the cooling unit includes a liquid reservoir capable of storing the liquid that has entered the cooling air passage,
The cooking device according to claim 1 , wherein the drain outlet is provided in the liquid reservoir so as to drain the liquid stored in the liquid reservoir. At least one of the intake port and the exhaust port is open toward a space above the top plate,
The cooking device of claim 1 , wherein the plate member is offset with respect to at least one of the air inlet and the air exhaust when viewed along a vertical direction. The cooking device of claim 1, wherein, when viewed vertically, the upstream edge of the plate member is offset upstream relative to the upstream edge of the drainage port. The cooking device of claim 1, wherein, when viewed vertically, the downstream edge of the plate member is offset downstream relative to the downstream edge of the drainage port. The cooking device of claim 1, wherein the downstream edge of the plate member is spaced apart from the wall surface of the cooling air passage. The cooking device of claim 1, wherein the drainage port is disposed downstream of the electrical component. The cooking device according to claim 8 , wherein an upstream edge of the plate member is connected to a bottom wall of the cooling air passage downstream of the electrical components.

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