JP2015206477A - heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker which properly locks a door of a grill chamber and maintains smooth opening and closing of the door.SOLUTION: A heating cooker includes: a housing 10; a grill chamber provided in the housing 10, the grill chamber in which its front side is formed as an opening part and cooked materials are stored; a door 500 which opens and closes the opening part of the grill chamber; and a lock mechanism which locks the door 500 in a closed state. The lock mechanism is formed by engagement means provided at both longitudinal ends of the door 500 and the housing 10 side.

Description

  The present invention relates to a cooking device.

  There is known an induction heating cooker that operates only by electric power without using gas or fire. In the induction heating cooker, the magnetic flux generated by the induction heating coil acts on a metal cooking pan and the cooking pan itself generates heat. In an induction heating cooker, in order to obtain the thermal power necessary for cooking, relatively large input power is required. When the heat loss is large, the induction heating coil and the driving semiconductor element such as an IGBT (Insulated Gate Bipolar Transistor) generate heat, and thus cooling is required.

  In a conventional induction heating cooker, a fan is provided below each induction heating coil, and the induction heating coil is cooled by air taken in from an intake port on the bottom surface of the casing. Furthermore, what has the function of the grill heating (it is also called roaster heating) which heats with a heater with induction heating is known as an induction heating cooking appliance.

  In order to prevent smoke from leaking out from the grill chamber as a cooking chamber for heating the grill, the grill chamber can be sealed by a door. In order to prevent the door from opening during cooking, a locking mechanism is required to hold the door closed. For example, Patent Document 1 below describes providing an uneven portion having a spring property at the lower portion of a door.

Patent No. 5012343

  In the heating cooker described in Patent Document 1, the closed state of the door can be locked by the uneven portion. However, since the concavo-convex portion is formed in the lower portion of the grill chamber, there is a possibility that oil and fat leaked to the outside due to opening and closing of the grill chamber or the like may enter the concavo-convex portion. In an extreme case, there is a possibility that the door cannot be opened and closed smoothly due to oil or the like accumulated in the uneven portion.

  Accordingly, an object of the present invention is to provide a heating cooker that can solve these problems by providing a lock mechanism for the door of the grill chamber on the outer surfaces of both sides of the door.

  In order to solve the above-described problems, the present invention provides a housing, a grill chamber that is provided in the housing, the front is configured as an opening, and stores the material to be cooked, and a door that opens and closes the opening of the grill chamber. And a lock mechanism that locks the door in a closed state, and the lock mechanism is a heating cooker configured by engagement means by both ends in the longitudinal direction of the door and the housing side.

  According to the present invention, the door of the grill chamber can be properly locked. Smooth opening and closing of the door can be maintained. In addition, the effect described here is not necessarily limited, and may be any effect described in the specification.

FIG. 1 is an external perspective view of a cooking device according to an embodiment of the present invention. FIG. 2 is an external perspective view showing a state where the door of the cooking device is opened. FIG. 3 is a bottom perspective view of the cooking device. 4A is a diagram illustrating a state of the speaker, and FIG. 4B is a diagram illustrating a configuration of the speaker installation unit. FIG. 5 is an external perspective view showing a state where an upper surface portion of the housing is removed. FIG. 6 is a perspective view showing a state of the coil chamber and the substrate chamber in the housing. FIG. 7 is a perspective view showing the configuration of the coil chamber. FIG. 8 is a perspective view showing the configuration of the coil chamber. FIG. 9 is an exploded perspective view of the heating cooker showing the configuration of the heating chamber. FIG. 10 is an exploded perspective view of the cooking device showing the configuration of the heating chamber. FIG. 11 is a plan view showing a configuration of a heater provided in the heating chamber. FIG. 12A is a sectional view of the door, and FIG. 12B is a perspective view showing the inside of the door. FIG. 13A is a diagram illustrating a lock mechanism provided on the door, and FIG. 13B is a diagram illustrating a lock mechanism provided on the housing side. FIG. 14 is a diagram showing the flow of air in the housing. 15A is an upper perspective view illustrating the configuration of the heat dissipation unit and the inverter, FIG. 15B is a front perspective view illustrating the configuration of the heat dissipation unit and the inverter, and FIG. 15C is a lower perspective view illustrating the configuration of the heat dissipation unit and the inverter. FIG. FIG. 16 is a plan view showing a configuration on the substrate. FIG. 17 is a diagram illustrating a configuration of an upper end corner portion of the housing. FIG. 18 is a plan view of the housing in a state where the upper surface portion is removed. FIG. 19 is a perspective view showing a frame portion, an upper surface portion, and a side surface of the top plate of the housing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited only to the following examples. The description will be given in the following order.
<1. Embodiment>
<2. Modification>

<1. Embodiment>
Hereinafter, the cooking device 1 according to the present invention will be described with reference to the drawings. The cooking device 1 according to the present invention has a function of performing cooking by an electromagnetic induction heating coil (hereinafter referred to as IH (induction heating) heating cooking). Furthermore, the heating cooker 1 also has a function of performing cooking (hereinafter referred to as grill cooking) in which the material to be cooked is heated by the heat of the heater.

  The heating cooker 1 includes a substantially box-shaped housing 10 and a top plate portion 2 provided on the housing 10. The housing 10 is configured in a substantially box shape from a front surface portion 12, a side surface portion 13, a bottom surface portion 14, and a back surface portion 15. The housing | casing 10 is comprised with the metal plate, for example, an iron plate. The top plate portion 2 includes a frame portion 16 and a top plate 20.

  Inside the casing 10, a coil chamber 100 provided with an induction heating coil 120, a heating chamber 200 for heating the cooking material by the heater, a substrate 310 provided with a control circuit for controlling the operation of the heating cooker 1, etc. A substrate chamber 300 is provided for housing the substrate. Details of the coil chamber 100, the heating chamber 200, and the substrate chamber 300 will be described later.

  The top plate 20 is for placing cooked utensils such as pans and pans, and is made of a material that is not heated by electromagnetic induction, such as highly heat-resistant glass. On the top plate 20, an operation panel 21 configured by a touch panel is provided. The operation panel 21 is composed of, for example, a capacitive touch panel. However, the operation panel 21 is not limited to the capacitance type, and may be another type, for example, a resistance film type touch panel, or may be configured by a physical button. By operating the operation panel 21, the user can turn on / off the induction heating coil, turn on / off the grill heater, adjust the heating power / temperature, switch the automatic cooking menu, and adjust the cooking.

  On the top plate 20, a placement range portion 22 that is a substantially circular mark indicating the position of the induction heating coil as the IH heater is provided. In the present embodiment, two induction heating coils 120 are provided. When performing IH heating cooking, the user places a cooking utensil such as a pan or a frying pan containing the cooking material on the placement range unit 22.

  One side of the front surface portion 12 is configured as a door 500 for opening and closing the heating chamber 200. The door is provided with a window portion 501 made of glass or the like. The user can check the inside of the heating chamber 200 from the window portion 501 during grill cooking.

  Below the door 500, a handle portion 510 that can be grasped when the user opens the door 500 is provided. The handle portion 510 has a width substantially the same as the width of the door 500 and is formed in a long protruding shape that protrudes forward. As shown in FIG. 2, the user can open the heating chamber 200 by pulling the door 500. When closing the door 500, the door 500 may be pushed toward the heating chamber 200. The door 500 is connected integrally with a tray 270 described later.

  The other side of the front surface portion 12, next to the door 500, is configured as a front panel portion 50. The front panel unit 50 is provided with a power switch 51 for switching on / off the power of the cooking device 1. The power switch 51 may be provided in the operation panel 21. A flange 52 is provided below the front panel 50. The flange portion 52 has a width substantially equal to the width of the front panel portion 50 and is formed in a protruding shape that protrudes forward, like the handle portion 510 of the door 500. The handle portion 510 and the flange portion 52 of the door 500 are configured such that the top surface, the front surface, and the bottom surface are flush with each other when the door 500 is closed.

  An exhaust port cover 30 is provided at the rear end of the upper surface of the heating cooker 1. The exhaust port cover 30 includes a large number of horizontally long holes, and covers the exhaust port 17 without blocking the exhaust from the exhaust port 17. The exhaust port cover 30 may be configured as a detachable cover.

  FIG. 3 is a perspective view showing the bottom side of the heating cooker 1. As shown in FIG. 3, legs 19 are provided at the four corners of the bottom surface of the housing 10. Since the leg portion 19 is provided on the bottom surface of the housing 10, a slight gap is formed between the bottom surface of the housing 10 and the surface on which the cooking device 1 such as a stovetop is placed. Become.

  Further, as shown in FIG. 3, a first air supply port 61 including a plurality of holes is provided on the lower surface of the flange portion 52. Moreover, the 2nd air supply opening 62 which consists of a some long hole comprised in the substantially L shape from the side surface of the front panel part 50 to the lower surface is provided. Further, the bottom surface portion 14 of the housing 10 is provided with a third air supply port 63 formed of a large number of holes. The first air supply port 61, the second air supply port 62, and the third air supply port 63 are for supplying outside air into the substrate chamber 300. By providing three air supply ports, the first air supply port 61, the second air supply port 62, and the third air supply port 63, the amount of air supplied to the substrate chamber 300 can be increased.

  Legs 19 are provided on the bottom surface of the housing 10, and a gap is formed between the bottom surface of the housing 10 and the mounting surface, so that air is also supplied into the substrate chamber 300 from the third air supply port 63. can do. This also increases the amount of air supplied into the substrate chamber 300.

  The first air supply port 61 is configured in a tapered shape that widens from the outside of the housing 10 toward the inside. Similarly, the second air supply port 62 and the third air supply port 63 are configured to have a taper shape that extends from the outer side to the inner side of the housing 10. With this configuration, it is possible to suppress wind noise when the air passes through the air supply port by driving the cooling fan 330.

  As shown in FIG. 4A, a speaker 71 is provided inside the front panel unit 50. As shown in FIG. 4B, the speaker 71 is provided in the front panel portion 50, inserted into a substantially cylindrical speaker installation portion 72 that extends in the protruding direction of the flange portion 52, and is fixed above and below. Is provided. The speaker 71 is connected to the control circuit and outputs a predetermined guide sound under the control of the control circuit. Examples of the guide voice include a power on / off notification, an operation content notification during cooking, and a preset temperature notification. The volume of the guide voice may be adjusted by input to the operation panel 21.

  The speaker 71 is provided so as to output sound in the lateral direction (the direction in which the flange portion 52 protrudes) in the flange portion 52 provided in the front panel portion 50. The sound from the speaker 71 is output outside the housing 10 through the sound output hole 64 provided on the lower surface of the flange portion 52. By providing the speaker 71 so that sound is output not in the direction of the sound output hole 64 provided on the lower surface of the flange portion 52 but in the lateral direction (the direction in which the flange portion 52 protrudes), After resonating inside the collar portion 52, the sound output hole 64 exits. Thereby, the sound from the speaker 71 can be output as a larger and clearer sound.

  Further, since the speaker 71 is provided in the flange portion 52, the flange portion 52 serves as a cover, and it is possible to prevent water, oil, and the like from being applied to the speaker 71. Such an arrangement of the speaker 71 is not limited to the heating cooker 1 according to the present embodiment, and can also be applied to household appliances such as a refrigerator, a microwave oven, a dishwasher, and a dish dryer. Furthermore, the present invention is not limited to home appliances in the home, but can be applied to in-vehicle speakers.

  FIG. 5 is a view showing a state where the top plate 20 is removed from the heating cooker 1. A frame portion 16 configured in a square shape is provided across the upper ends of the front surface portion 12, the side surface portion 13, and the back surface portion 15 of the housing 10. The frame portion 16 is fixed by, for example, screwing. As shown in FIG. 6, the rear end side of the frame portion 16 is formed wider than the other sides, and an exhaust port 17 is formed at the rear end side. As described above, the exhaust port cover 30 is provided on the exhaust port 17. The exhaust port 17 is configured to rise slightly upward at the rear end side of the frame portion 16. Thereby, it is possible to prevent water or the like from entering the exhaust port 17 from the side.

  In the upper part of the housing 10, an induction heating coil 120a and an induction heating coil 120b for performing IH heating cooking are formed. The bottom surface in the coil chamber 100 is configured as a coil placement unit 110 for placing the induction heating coil 120a and the induction heating coil 120b. The coil mounting part 110 is configured in a substantially flat plate shape. In the present embodiment, two induction heating coils 120 a and induction heating coils 120 b are provided on the coil placement unit 110. However, the number of induction heating coils is not limited to two, and may be one or two or more, for example, three.

  The induction heating coil 120a is provided on the coil mounting part 110 in a state of being housed inside the annular coil base 130. The coil base 130 includes three projecting coil support portions 131 protruding outward. The coil base 130 is provided on the coil mounting part 110 in a state where an elastic body such as a spring is interposed between the bottom surface of the coil support part 131 and the upper surface of the coil mounting part 110.

  A standing plate-like coil position restricting portion 140 is provided on the coil mounting portion 110. The coil position restricting portion 140 is configured in a U shape that opens in the direction of the induction heating coil 120 in a plan view. When each coil support portion 131 is positioned on each elastic body, the outer peripheral side surface of the coil support portion 131 can come into contact with the coil position restricting portion 140. Thereby, the position of the induction heating coil 120a is regulated.

  In addition, when the induction heating coil 120a is energized, the induction heating coil 120 vibrates, but the vibration of the induction heating coil 120a can be suppressed by the coil position restriction unit 140. Therefore, the induction heating coil 120a can be supported in a stable state. The induction heating coil 120b is also provided in the same manner. The numbers of the coil support portions 131 and the coil position restricting portions 140 are merely examples, and the number is not limited to three.

  A communication port 400 is provided behind the coil placement unit 110 in the housing 10. The communication port 400 is configured to allow the coil chamber 100 and the substrate chamber 300 to communicate with each other, and the first air supply port 61, the second air supply port 62, and the third air supply port 63 are configured by the suction force of the cooling fan 330. The air supplied from the inside to the substrate chamber 300 rises and flows into the coil chamber 100.

  As shown in FIG. 7 and FIG. 8, a plate-like air guide portion 150 configured in a substantially L shape in plan view is provided on the coil placement portion 110. The air guide portion 150 is provided such that one end side is located on the communication port 400 side behind the housing 10 and the end portion on one end side is in contact with the back surface portion 15 of the housing 10. The air guide portion 150 is provided such that the other end side is positioned on the induction heating coil 120 b side and a certain amount of space is formed between the end portion on the other end side and the side surface portion 13. The width of a certain amount of space between the end portion on the other end side and the side surface portion 13 is about 10 cm to about 50 cm, preferably about 40 cm. Further, the gap between the upper end of the air guide portion 150 and the top plate 20 may be configured to be about 1.5 mm or less. The one where the clearance gap between the upper end of the air guide part 150 and the top plate 20 is smaller can guide air without leakage.

  By arranging the air guide portion 150 in this way, the air rising from the communication port 400 can be guided to the induction heating coil 120a and the induction heating coil 120b side without leakage, and the induction heating coil can be efficiently cooled. it can. Furthermore, since the air guide part 150 is provided so that a certain amount of space is formed between the end on the other end side and the side part 13, the air flowing around the induction heating coil 120 is surely exhausted. It is possible to guide to the mouth 17. Thereby, the flow path of the air which cools induction heating coil 120a and induction heating coil 120b appropriately is formed.

  An operation substrate 40 is provided in front of the coil chamber 100 in the housing 10. The operation board 40 is provided directly below the operation panel 21. The operation substrate 40 is connected to a control circuit on the substrate 310 provided in the substrate chamber 300, and a control command is sent to the control circuit provided on the substrate 310 in response to an input from the user to the operation panel 21. Output.

  As shown in FIG. 9, a heating chamber 200 is provided below the coil chamber 100. The heating chamber 200 is for cooking the food with the heat of the heater. The heating chamber 200 is configured in a substantially box shape having an opening 210 on the front surface. The opening 210 is opened and closed by the door 500. The heating chamber 200 is a space defined by a ceiling wall 201, a bottom wall 202, a left side wall 203, a right side wall 204 and a back wall 205. The ceiling wall 201, the bottom wall 202, the left side wall 203, the right side wall 204, and the back wall 205 are made of a metal having excellent light reflectivity such as an aluminized steel plate and stainless steel, and function as a reflector that reflects the heat of the heater. May be. However, the constituent metals are not limited to them, and any metal material may be used as long as it has a good light reflectivity.

  As shown in FIGS. 2, 9, and 10, a tray 270 is provided below the heating chamber 200. The saucer 270 is made of iron-coated iron or the like. On the saucer 270, a placing net for placing the material to be cooked may be provided.

  The saucer 270 has a front end connected to the door 500, and is configured to move back and forth in conjunction with opening and closing of the door 500. As a result, when the door 500 is pulled out, the tray 270 is pulled out of the heating chamber 200 in conjunction with it, so that it becomes easy to place the material to be cooked on the placement net. In addition, when the door 500 is to be closed, the tray 270 is accommodated in the heating chamber 200 in conjunction with it. However, the tray 270 may be configured to be separated from the door 500 so that it can be taken in and out of the heating chamber 200.

  An upper heater 230 is provided above the heating chamber 200. A lower heater 240 is provided below the heating chamber 200. The upper heater 230 and the lower heater 240 are constituted by, for example, sheathed heaters. However, the upper heater 230 and the lower heater 240 may be configured by a heater other than the sheathed heater, for example, a quartz tube heater.

  A bar-shaped upper heater support portion 250 is provided between the left side wall 203 and the right side wall 204 at a position substantially equal to the height of the upper heater 230 in the heating chamber 200. The heater support portion is provided with three horizontally long holes along the longitudinal direction. By inserting each of the three forks of the upper heater 230 into the hole, the upper heater 230 is supported in a stable state. The lower heater 240 is also supported by a lower heater support 260 that is configured in the same manner as the upper heater support 250.

  As shown in FIGS. 10 and 11, the upper heater 230 and the lower heater 240 are formed in a three-pronged shape with two sets formed by forming three substantially U-shaped curved portions 231. Yes. By configuring the upper heater 230 and the lower heater 240 in a three-pronged shape, for example, when grilling fish, each of the three forks is located below the three positions of the head, belly, and tail of the fish. Fish can be heated appropriately.

  As shown in FIG. 11, the upper heater 230 and the lower heater 240 are any of the left side wall 203, the right side wall 204 and the back wall 205 of the heating chamber 200, and the inner surface of the door 500 that also functions as the front wall of the heating chamber 200. It is comprised so that it may become substantially equidistant from. In FIG. 11, the distance L1 to the back wall 205, the distance L2 to the left side wall 203, the distance L3 to the inner surface of the door 500, and the distance L4 to the right side wall 204 are substantially equal. By comprising in this way, the bias | inclination of a heat is eliminated in the heating chamber 200, and a to-be-cooked material can be heated uniformly.

  A grill duct 220 is connected to the back wall 205 of the heating chamber 200. The grill duct 220 is formed in a substantially L shape in side view, and is configured such that one end side opens in the heating chamber 200 and the other end side opens on the exhaust port 17 side. Air in the heating chamber 200 is exhausted from the exhaust port 17 to the outside of the housing 10 through the grill duct 220.

  As shown in FIGS. 12A and 12B, a packing 520 is provided inside the door 500 so as to contact the glass plate 502 constituting the window portion 501. The packing 520 is configured using an elastic body such as silicon. In the present embodiment, as shown in FIG. 12A, the packing 520 has a substantially T-shape when viewed from the side, the flat surface abuts against the glass plate 502, and the protrusion side is provided in the opposite direction to the glass. It is provided to face the resin plate 503 side made of plastic or the like.

  Further, as shown in FIG. 12B, the packing 520 is configured in a substantially U shape that opens downward in a plan view, and surrounds the periphery, upper, and left and right sides of the window portion 501 of the door 500. Is provided. By providing the packing 520 between the glass plate 502 and the resin plate 503, a gap 504 is formed between the glass plate 502 and the resin plate 503. Since the gap 504 functions as a heat insulating layer, the heat in the heating chamber 200 is blocked and the surface of the door 500 can be prevented from becoming high temperature.

  Further, as shown in FIG. 13A, engagement protrusions 530 constituting a door lock mechanism are provided below both side surfaces of the door 500. The engagement protrusion 530 is configured to have a front sliding surface 531 and a rear sliding surface 532 that are formed obliquely from the center toward the front and rear. And it is being fixed to the side of door 500 in one end side. Since the other end side is not fixed to the side surface of the door 500 and a slight gap is formed, the engagement protrusion 530 is pressed around the fixed one end side as an axis. And retracted into the door 500. In addition, the engagement protrusion 530 may be configured to be retracted into the door 500 in response to the pressing by being provided on a side surface of the door 500 via an elastic body such as a spring.

  On the other hand, as shown in FIG. 13B, a recessed engagement receiving portion 540 constituting a door lock mechanism is provided on the side surface of the front panel portion 50. A similar engagement receiving portion 540 is also provided on the side surface of the housing 10. That is, the engagement receiving portions 540 are present on the left and right sides of the door 500, respectively. When the engagement protrusion 530 provided on the door 500 enters and engages with the engagement receiving portion 540, the door 500 is locked in a closed state. Thereby, the adhesiveness of the door 500 and the housing | casing 10 can be improved, and it can prevent that the hot air in the heating chamber 200 leaks from the clearance gap between the door 500 and the housing | casing 10. FIG.

  When the opened door 500 is to be closed, the rear sliding surface 532 of the engaging protrusion 530 comes into contact with the housing 10 and slides, and is further pressed by the housing 10 so that the engaging protrusion 530 enters the door 500. Will withdraw. When the engagement protrusion 530 enters the engagement receiving portion 540, the engagement protrusion 530 returns to the original state. In this way, the engagement protrusion 530 is caught by the engagement receiving portion 540, and the door 500 is locked in a closed state.

  In the heating cooker 1 according to the present invention, as shown in FIG. 11, the width direction of the heating chamber 200 is configured to be larger than the depth direction. Therefore, it is necessary to increase the dimension in the width direction of the door 500 corresponding to the dimension in the width direction of the heating chamber 200. In order to ensure the locking of the door 500 having a large width, door locking mechanisms are provided on both side surfaces which are the longitudinal direction of the door 500.

  On the other hand, when the closed door 500 is to be opened, the front sliding surface 531 of the engagement protrusion 530 slides in contact with the side surface of the engagement receiving portion 540 and is further pressed against the housing 10 to engage. The protrusion 530 is retracted into the door 500. When the engaging protrusion 530 is separated from the housing 10, the engaging protrusion 530 returns to the original state. In this way, the locked state of the door 500 is released.

  The heating chamber 200 is configured such that the dimension in the width direction (lateral direction) is larger than the dimension in the depth direction (vertical direction). By comprising in this way, long to-be-cooked materials, such as a fish, can be arranged side by side in the horizontal direction in the heating chamber 200, for example. Thereby, it becomes possible to heat many to-be-cooked materials simultaneously.

  If an attempt is made to increase the width of the heating chamber 200 without changing the overall width of the housing 10, the width on the substrate chamber 300 side becomes relatively narrow, and the air supply port provided on the substrate chamber 300 side As a result, the air supply amount is reduced, and the amount of air supplied is reduced. If an attempt is made to increase the width of the heating chamber 200 without changing the width of the substrate chamber 300, the width of the heating cooker 1 itself increases. When the width of the heating cooker 1 is increased, there may be a problem that the heating cooker 1 cannot be placed on a stove table provided with the heating cooker 1.

  Therefore, the amount of air supplied into the substrate chamber 300 is reduced by providing three supply ports, the first supply port 61, the second supply port 62, and the third supply port 63, on the substrate chamber 300 side. In addition, it is possible to increase the width of the heating chamber 200 without unnecessarily increasing the width of the housing 10.

  A substrate chamber 300 that accommodates the substrate 310 is provided under the coil placement unit 110 and next to the heating chamber 200. In the present embodiment, two substrates 310 provided with a control circuit are provided in the substrate chamber 300. The two substrates 310 correspond to the two induction heating coils 120, respectively. The induction heating coil 120 is controlled by a control circuit, and the output is adjusted in accordance with the size of the cooker installed on the top plate surface, the amount of cooking materials, etc. corresponding to each induction heating coil. The induction heating coil 120 is controlled by a control circuit, and a control command corresponding to a user input to the operation panel 21 is input to the control circuit. The control circuit controls each part of the heating cooker 1 in accordance with a control command from the operation panel 21.

  As shown in FIG. 9, a cooling fan 330 is provided in front of the substrate chamber 300. In the present embodiment, an axial fan is used as the cooling fan 330. The fan of the cooling fan 330 has a double structure, and one side is a fixed vortex. When the cooling fan 330 is operated, outside air is supplied into the substrate chamber 300 from the first air supply port 61, the second air supply port 62, and the third air supply port 63. The supplied outside air flows in the substrate chamber 300 by the action of the cooling fan 330. Thereby, the substrate 310 can be cooled. The cooling fan 330 may be a fan other than the axial fan, for example, a centrifugal fan.

  The cooling fan 330 is provided in the heating chamber 200 at a certain distance from the front end of the heating chamber 200. That is, the cooling fan 330 is not provided at the front end in the heating chamber 200, but is provided so as to be located inside the heating chamber 200 at a certain distance from the front end in the heating chamber 200. . By providing in this way, it is possible to suppress the operating sound of the cooling fan 330 from leaking out of the housing 10.

The first air supply port 61 and the second air supply port 61 are provided by providing the first air supply port 61 on the lower surface of the flange portion 52 and providing the second air supply port 62 at the lower end of the front panel portion 50 below the flange portion 52. It is possible to prevent water, oil, dirt, and the like from entering the substrate chamber 300 from the air vent 62. Further, since the third air supply port 63 is provided on the lower surface of the housing 10, water, oil, dirt, and the like do not enter the substrate chamber 300 from the third air supply port 63.

  A communication port 400 is provided above the rear end of the substrate chamber 300 so as to communicate with the coil chamber 100. The communication port 400 is for the air flowing through the substrate chamber 300 from the first to third air supply ports 63 to rise and flow into the coil chamber 100.

  In order to prevent water, oil, dirt, etc. from entering the substrate chamber 300, the coil chamber 100, the heating chamber 200, and the substrate chamber 300 are configured not to communicate with each other at locations other than the communication port 400. .

  Here, the flow of air in the housing 10 will be described with reference to FIG. First, air is supplied to the substrate chamber 300 from the first air supply port 61, the second air supply port 62, and the third air supply port 63 by the suction force of the cooling fan 330 (arrow A). The supplied air flows to the back of the substrate chamber 300 while cooling the substrate 310 (arrow B). Then, air rises along the rear wall surface of the substrate chamber 300 (arrow C), passes through the communication port 400, and flows into the coil chamber 100 (arrow D).

  The air that has flowed into the coil chamber 100 passes over the coil placement unit 110 and cools the two induction heating coils 120a and 120b (arrow E). When the air flows on the coil mounting unit 110, the air is guided by the air guiding unit 150, exits from the communication port 400, and then flows in the direction of the induction heating coil 120 a. Since one end side of the air guide part 150 is provided so as to be in contact with the back face part 15 without a gap, all the air flowing into the coil chamber 100 from the communication port 400 flows to the induction heating coil 120a without leaking. Next, the air is guided in the direction of the induction heating coil 120b along the air guide 150. Since a certain amount of space is formed between the air guide portion 150 and the side surface portion 13, the air cools the induction heating coil 120 b, and then the housing starts from the space between the air guide portion 150 and the side surface portion 13. 10 flows to the rear exhaust port 17 and is finally discharged upward (arrow F).

  Next, the substrate 310 provided in the substrate chamber 300 will be described. On the substrate 310, a heat radiating section 340 and a large number of circuit elements constituting a control circuit are provided. The heat radiation part 340 includes a plurality of flat fins 341 that rise upward. Further, as shown in FIGS. 15A to 15C, positive and negative switching elements (IGBT: Insulated Gate Bipolar Transistor) are provided on the back surface of the heat radiating portion 340 (the surface opposite to the side where the fins 341 are provided). Two inverters 350 configured in pairs are provided. Further, a rectifier 351 is provided on the back surface of the heat radiating unit 340.

  The inverter 350 is for supplying a high frequency current to the induction heating coil 120, and the inverter 350 is attached to the heat radiating unit 340 in order to cool the inverter 350 efficiently. By sending the air taken in from the outside by the cooling fan 330 into the substrate chamber 300 as cooling air, the heat radiating plate to which the inverter 350 is attached is cooled. The inverter 350 and the rectifier 351 are attached to the heat radiation part 340 by screwing, for example.

  The heat dissipating unit 340 is provided so that the longitudinal direction of the fins 341 is substantially the same as the direction in which air flows from the cooling fan 330 to the back of the substrate chamber 300 in the substrate chamber 300. By providing in this way, the air supplied into the substrate chamber 300 by the cooling fan 330 smoothly flows between the fins 341 and the fins 341 in the heat radiating unit 340, and the heat radiating unit 340, the inverter 350, and the rectifier 351. The cooling effect can be enhanced.

  Inverter 350 is arranged such that more fins 341 are included within a range substantially equal to the width of inverter 350. Also by this, the cooling effect by the heat radiating part 340 can be enhanced. The rectifier 351 is similarly arranged.

  As shown in FIG. 16, among the circuit elements provided on the substrate 310, a component that easily generates heat (hereinafter referred to as a heat generating component 360) such as a capacitor is interposed between the fins 341 of the heat radiating unit 340. It is provided at a position where the air that has passed does not come into contact (a position other than the extension line of the fin 341 of the heat dissipating section 340).

  By providing the heat generating component 360 at such a position, the heat generating component 360 is not cooled by the air heated by passing through the heat radiating portion 340, and the cooling effect can be enhanced. When the heat generating component 360 is provided at a position on the extended line in the longitudinal direction of the fin 341 of the heat radiating portion 340, the air heated through the heat radiating portion 340 contacts the heat generating component 360, and the heat generating component 360 is efficiently cooled. I can't do it.

  The coil chamber 100, the heating chamber 200, and the substrate chamber 300 provided in the housing 10 are configured as described above.

  As shown in FIG. 17, the corner portion 600 of the casing 10 configured in a rectangular shape is folded back so as to slightly protrude toward the inside of the casing 10. The protrusion width to the inside of the housing 10 is, for example, approximately 2 mm. However, the protruding width is not limited to this dimension. By comprising in this way, the intensity | strength of the housing | casing 10 can be raised.

  Further, as shown in FIG. 18, a recess 700 is provided in the bottom surface portion 14 of the housing 10. The recessed portion 700 is provided at a position substantially directly below the exhaust port 17 provided at the rear of the housing 10. In addition, the recess 700 is provided with a plurality of holes 701. By providing such a recessed portion 700, even if water or the like enters the housing 10 from the exhaust port 17, all of the water falls into the recessed portion 700, and from the hole portion 701 of the recessed portion 700, the outside of the housing 10. To be discharged. Thereby, the water etc. which entered from the exhaust port 17 do not accumulate in the housing 10.

  The top plate 20 is fixed on the frame portion 16 using an adhesive. Thus, unlike a process method such as screwing or fitting, a step or a gap is not formed on the surface of the top plate 20, and the top surface of the top plate 20 can be formed flat. Thereby, dirt does not accumulate in a level | step difference, a clearance gap, etc., and the top plate 20 becomes easy to clean.

  The frame portion 16 constituting the top plate portion 2 is configured by connecting a front frame 801 and a rear frame 802, which are two substantially U-shaped plate members, by a technique such as welding. If comprised in this way, as FIG. 19 shows, a level | step difference will be formed in the connection part 803 of the plate-shaped member in the side surface of the frame part 16, and a plate-shaped member. The top plate 20 is configured to have a size that can cover the connecting portion 803. By configuring the top plate 20 in such a size, the top plate 20 covers the connection portion 803, and it is possible to prevent dirt and the like from being accumulated by the connection portion 803 having a step. Further, it is possible to prevent the durability of the heating cooker 1 from being deteriorated due to the liquid entering from the connection portion 803. Further, the strength of the frame portion 16 can be increased.

<2. Modified Example> The embodiment of the present invention has been specifically described above, but the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible. . The present invention is also applicable to a so-called IH cooker that does not include a heating chamber, for example, no heating chamber.

DESCRIPTION OF SYMBOLS 1 ..... Cooker 10 ..... Case 16 ..... Frame part 17 ....... Exhaust port 20 ...... Top plate 30 ..... Exhaust port cover 52 ..... Butt part 61 ..... First air supply port 62 ..... Second air supply port 63 ········· Third air inlet 100 ······ Coil chamber 120 ··· Electromagnetic induction coil 150 ··· Air guide unit 200 ··· 230 ··· Upper heater 240 ··· Lower heater 300 ··· Substrate chamber 330 ··· Cooling fan 340 ··· Radiating part 350 ···・ ・ ・ Inverter 360 ・ ・ ・ ・ ・ ・ Heat generating part 400 ・ ・ ・ ・ ・ ・ Communication port 500 ・ ・ ・ ・ ・ ・ Door 700 ・ ・ ・ ・ ・ ・ Dent 701 ・ ・ ・ ・ ・ ・ Hole 803 ・... Connection portion

Claims (3)

A housing,
A grill room provided in the housing, the front is configured as an opening, and stores the material to be cooked;
A door that opens and closes the opening of the grill chamber;
A lock mechanism that locks the door in a closed state,
The said lock mechanism is a heating cooker comprised by the engaging means by the said door longitudinal direction both ends and the said housing | casing side. The cooking device according to claim 1, wherein the engagement means includes an engagement protrusion provided at both ends of the door in the longitudinal direction and an engagement receiving portion provided on the housing side. On the front surface of the door, a handle portion and a window glass covering the viewing window are provided on the front surface,
The cooking device according to claim 2, wherein the engagement protrusion is formed on an outer surface of both side plates that support the window glass of the door, and the engagement receiving portion is formed on a side wall of the grill chamber.