JP2019220285A - Heating cooker - Google Patents

Abstract

To provide a heating cooker which can suppress temperature rise of components arranged above a cooking chamber.SOLUTION: A heating cooker comprises: a placing part on which a heating object is placed; a first heating device, arranged under the placing part, which heats the heating object placed on the placing part; a first housing, arranged under the placing part, which has at least a bottom and houses the first heating device; a cooking chamber which has an upper wall and is arranged between an outer surface of the upper wall and an outer surface of the bottom of the first housing via a gap; a second heating device which heats the inside of the cooking chamber; an air blower; and a second housing which houses the cooking chamber and the air blower. Within a range of the height of the gap between the bottom of the first housing and the upper wall of the cooking chamber, there is formed a ventilation port which communicates with the air blower and the gap.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a heating cooker having a heating device for heating an object to be heated placed on a top plate, and a cooking cabinet provided below the heating device.

  Conventionally, there is a heating cooker provided with a heating coil for heating an object to be heated on a top plate and a roaster unit. As such an induction heating cooker, there has been proposed a heating cooker provided with a cooling fan for cooling a heating coil and provided with a roaster cooling fan separately from the cooling fan (for example, see Patent Document 1).

JP 2007-18873 A

  In the heating cooker described in Patent Literature 1, the outside of the roaster section is covered with a roaster section outer shell. Cooling air sent from the roaster cooling fan is configured to flow above the roaster outer shell, and cools the roaster outer shell and the components disposed above the roaster outer shell. Here, a roaster part serving as a heat source is arranged below the roaster part outer shell. Therefore, depending on the distance between the roaster unit and the outer periphery of the roaster unit, the amount of heat transmitted from the roaster unit to the outer periphery of the roaster unit may be larger than the cooling capacity of the cooling air from the cooling fan of the roaster unit. In such a case, cooling of the components such as the resin component or the circuit board disposed on the outer periphery of the roaster portion and above the component becomes insufficient, and the components become hot. In addition, when the distance between the roaster section and the outer periphery of the roaster section is increased, the height of the heating cooker is also increased. In particular, it is not easy to increase the distance between the roaster part and the outer periphery of the roaster part, because the heating cooker used by being incorporated in the kitchen top plate is limited in its height dimension.

  The present invention has been made in view of the above problems, and includes a heating device for heating an object to be heated placed on a top plate, and a cooking cabinet provided below the heating device. It is an object of the present invention to provide a heating cooker that can suppress a high temperature of components arranged on a cooking cabinet.

  A heating cooker according to the present invention is provided with a mounting portion on which an object to be heated is mounted, and a heating device provided below the mounting portion for heating the object to be mounted mounted on the mounting portion. A heating device, a first housing provided below the mounting portion, having at least a bottom, and accommodating the first heating device, and an upper wall; an outer surface of the upper wall; A cooking cabinet arranged with a gap between the outer surface of the bottom of one housing, a second heating device for heating the inside of the cooking cabinet, a blower, and a second housing containing the cooking cabinet and the blower; Two housings, and a ventilation opening communicating with the blower and the gap is formed within a height range of the gap between the bottom of the first housing and the upper wall of the cooking chamber. Is what it is.

  According to the present invention, since the cooling air flows through the gap between the upper wall of the cooking cabinet and the bottom of the first housing, the temperature of the bottom of the first housing and the components housed in the first housing are increased. Can be suppressed.

FIG. 3 is a perspective view of the heating cooker according to Embodiment 1. FIG. 3 is a perspective view of the heating cooker according to Embodiment 1 in a state where a top plate is removed. FIG. 2 is an exploded perspective view of the heating cooker according to Embodiment 1. It is a cross section of the principal part of the cooking device concerning Embodiment 1. It is a figure which shows the modification of the blower of a heating cooker and Embodiment 1 which concerns on Embodiment 1. FIG. 3 is a diagram illustrating a baffle plate and a ventilation port according to the first embodiment. It is a cross section of the principal part of the cooking device concerning Embodiment 1. FIG. 9 is a diagram illustrating a baffle plate and ventilation holes according to a second embodiment. It is the perspective view which saw through some heating cookers concerning Embodiment 3. It is a cross-sectional schematic diagram of the principal part of the heating cooker concerning Embodiment 3. It is a cross-sectional schematic diagram of the principal part of the heating cooker concerning Embodiment 3. It is the perspective view which saw through some heating cookers concerning Embodiment 4. It is a cross section of the principal part of the cooking device concerning Embodiment 4. It is a partial cross-sectional schematic diagram of the heating cooker according to Embodiment 5. FIG. 15 is a schematic cross-sectional view of a state in which the heating cooker according to Embodiment 6 is incorporated in a kitchen top plate.

  Hereinafter, a heating cooker according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention. Further, the present invention includes all combinations of configurations that can be combined among the configurations described in the following embodiments. The cooking device shown in the drawings is an example of a device to which the cooking device of the present invention is applied, and the device to which the present invention is not limited by the cooking device shown in the drawings. . In the following description, terms indicating directions (for example, “up,” “down,” “right,” “left,” “front,” “back,” and the like) are used as appropriate to facilitate understanding. These are for explanation and do not limit the present invention. In each drawing, the same reference numerals denote the same or corresponding components, which are common throughout the entire specification. In addition, in each drawing, the relative dimensional relationship or shape of each component may be different from the actual one.

Embodiment 1 FIG.
(Structure of cooking device)
FIG. 1 is a perspective view of a heating cooker 1 according to the first embodiment. The heating cooker 1 includes a top plate 2 as a mounting portion on which an object to be heated is mounted, and a second housing 7 provided below the top plate 2. The top plate 2 of the present embodiment is made of a nonmetallic material such as heat-resistant glass or ceramic. An object to be heated such as a pan is placed on the top plate 2. The heating cooker 1 has an exhaust port 3 used for exhaust. In the example of FIG. 1, the exhaust port 3 communicating with the inside of the second housing 7 is formed behind the top plate 2, but the shape and position of the exhaust port 3 are not limited to those illustrated. An exhaust duct 4 communicating with the exhaust port 3 is provided inside the second housing 7. A door 9 is provided on a front surface of the second housing 7, that is, a surface facing the user. The door 9 is a drawer-type door that opens and closes a cooking cabinet 10 (see FIGS. 3 and 4) provided inside the second housing 7.

  FIG. 2 is a perspective view of the cooking device 1 according to Embodiment 1 with the top plate 2 removed. The first housing 6 is provided inside the second housing 7. The first housing 6 has at least a bottom 6a. The first heating device 5 is provided on the bottom 6 a of the first housing 6. Further, a control device 8 that controls the operation of the first heating device 5 is provided on the first housing 6 of the present embodiment. Although not shown in FIG. 2 to prevent the drawing from being complicated, components for fixing the first heating device 5 and the control device 8 inside the first housing 6 are also provided inside the first housing 6. Have been. These components include components made of a material having relatively low heat resistance such as resin.

  The first housing 6 is a housing having a bottom 6a and an open upper surface. The first housing 6 is provided inside the second housing 7 such that the outer surfaces of the four side walls are in contact with the inner surfaces of the four side walls of the second housing 7. The height of the first housing 6 is smaller than the height of the second housing 7, and the bottom 6 a of the first housing 6 is at a position higher than the bottom of the second housing 7. The bottom 6a of the first housing 6 also functions as a partition that partitions the inside of the second housing 7 up and down. The first housing 6 and the second housing 7 are made of, for example, a metal plate. Note that part or all of the side wall of the first housing 6 may be shared with the side wall of the second housing 7. For example, only a member corresponding to the bottom 6a of the first housing 6 may be attached to the inner surface of the side wall of the second housing 7.

  The first heating device 5 heats an object to be heated placed on the top plate 2. FIG. 2 shows an example in which three first heating devices 5 are provided, but the number of first heating devices 5 is not limited. Specific examples of the first heating device 5 include a heating coil, a radiant heater that generates heat when energized, or a gas burner. When the first heating device 5 is a heating coil, an eddy current is generated in a cooking container, which is a heating target made of a material to be induction-heated, by a magnetic flux generated by a current flowing through the heating coil, and the eddy current causes the cooking container. The food in the cooking container is heated by the Joule heat. A part of the plurality of first heating devices 5 may be configured with a heating coil, and the other part may be configured with an electric heater. When the first heating device 5 is a gas burner, the mounting portion on which the object to be heated is mounted may be provided with a virtue.

  The control device 8 controls the operation of the first heating device 5. The control device 8 is configured by dedicated hardware or a microprocessor that executes a program stored in a memory. When the first heating device 5 is a heating coil, the control device 8 includes an inverter circuit that supplies a high-frequency current to the heating coil.

  The exhaust duct 4 vertically passes through the bottom 6 a of the first housing 6. Therefore, the exhaust gas on the lower side of the first housing 6 can be guided onto the first housing 6.

  FIG. 3 is an exploded perspective view of the cooking device 1 according to the first embodiment. Inside the second housing 7 and below the bottom 6a of the first housing 6, a cooking cabinet 10 is provided. The cooking cabinet 10 is a room for heating and cooking food stored therein. On the cooking cabinet 10, a baffle plate 13 is provided. The air guide plate 13 has a first surface 13a and a second surface 13b, and this structure will be described later.

  FIG. 4 is a schematic sectional view of a main part of the cooking device 1 according to the first embodiment. FIG. 4 is a diagram of a cross section in the width direction of the cooking device 1 as viewed from the front. Below the bottom 6a of the first housing 6, a cooking cabinet 10 is provided. A gap 21 is provided between the outer surface of the bottom 6 a of the first housing 6 and the outer surface of the upper wall 10 a of the cooking cabinet 10. The air guide plate 13 is provided in the gap 21. The upper outer surface of the air guide plate 13 is not in contact with the outer surface of the bottom 6a, and there is a gap between the outer surface of the air guide plate 13 and the outer surface of the bottom 6a.

  A blower 12 is provided inside the second housing 7 and beside the cooking cabinet 10. The blower 12 sends the wind to the gap 21. Between the blower 12 and the gap 21, there is provided a first air guide duct 24 through which the air sent from the blower 12 flows. In the present embodiment, the first air guide duct 24 is formed by a substantially cylindrical member having an air passage therein. In addition, a part of the member configuring the first air guide duct 24 may configure the wall of the second housing 7. The delivery surface of the blower 12 is provided inside the first air guide duct 24. The first air guide duct 24 extends substantially straight toward the upper side of the blower 12 and has a shape bent toward the cooking cabinet 10.

  A partition wall 23 is provided on the side of the gap 21 and between the gap 21 and the first air guide duct 24 to partition the inside of the second housing 7 left and right. The partition wall 23 is arranged on an extension of the side wall 10 b of the cooking cabinet 10 adjacent to the first air guide duct 24. The partition wall 23 has a shape extending upward from the upper wall 10a of the cooking cabinet 10, and extends substantially entirely in the depth direction of the cooking cabinet 10. A ventilation port 22 is formed in the partition wall 23. The ventilation opening 22 extends in the depth direction of the partition wall 23. The length of the ventilation opening 22 in the depth direction is equal to or less than the length of the first housing 6 in the depth direction. The ventilation port 22 is connected to an outlet of the first air guide duct 24. It can be said that the ventilation opening 22 is a boundary surface between the first ventilation duct 24 and the gap 21.

  When the wings of the blower 12 rotate, the air in the second housing 7 is sucked into the blower 12, and the wind is sent from the sending surface of the blower 12. The wind sent from the blower 12 flows inside the first air guide duct 24, and flows into the gap 21 via the ventilation port 22.

  The cooking cabinet 10 is provided with a second heating device 11 for heating the inside of the cooking cabinet 10. Specific examples of the second heating device 11 include a heating coil, a radiant heater that generates heat when energized, or a gas burner. The arrangement position of the second heating device 11 is determined according to the heating method. FIG. 4 shows an example in which the second heating device 11 is disposed above the upper wall 10 a of the cooking cabinet 10 and below the baffle plate 13, but the second heating device is arranged inside the cooking cabinet 10. 11 may be arranged.

  A heat insulating material made of glass wool or the like may be provided in a gap between the air guide plate 13 and the upper wall 10a of the cooking cabinet 10. Further, a gap may be provided between the bottom of the cooking cabinet 10 and the bottom of the second housing 7 as shown in FIG. This gap functions as a heat insulating space that suppresses heat conduction from the cooking cabinet 10 to the second housing 7. Further, the bottom of the cooking cabinet 10 and the bottom of the second housing 7 may be in contact with each other. By doing so, the position of the cooking cabinet 10 is stably held.

  Although FIG. 4 illustrates an example in which the blower 12 and the first air guide duct 24 are disposed on the right side of the cooking cabinet 10 in the drawing, the left and right positional relationship may be opposite to the illustrated one. Good.

  FIG. 5 is a diagram illustrating a modification of the blower 12 and the first air guide duct 24 of the heating cooker 1 according to Embodiment 1. FIG. 5 is a diagram of a cross section in the width direction of the cooking device 1 as viewed from the front. In FIG. 5, a first modification of the blower 12 and the first air guide duct 24 is shown by a solid line, and a second modification of the blower 12 is shown by a broken line. The blower 12 according to the first modification shown by a solid line in FIG. 5 is provided at a position where at least a part of the blower 12 overlaps the ventilation opening 22 in the height direction. The first air guide duct 24 of the first modification has a shape that extends substantially horizontally and straight from the blower 12 toward the ventilation opening 22.

  The blower 12 of Modification 2 shown by a broken line in FIG. 5 is provided at a position close to the ventilation port 22. In the second modification, the first air guide duct that connects the blower 12 and the ventilation port 22 is not provided.

  In addition to Modification Example 1 and Modification Example 2 in FIG. 5, other configurations can be adopted for the arrangement and shape of the blower 12 and the first air guide duct 24.

  FIG. 6 is a diagram illustrating the air guide plate 13 and the ventilation holes 22 according to the first embodiment. FIG. 6 is an enlarged view of the vicinity of the ventilation opening 22 in FIG. 4, and arrows X and X1 conceptually show the flow of the wind. With reference to FIG. 4 and FIG. 6, a configuration related to the air guide plate 13, the gap 21, and the ventilation port 22 will be described. The air guide plate 13 is a member for guiding the wind flowing into the gap 21 from the air vent 22 to the bottom 6 a of the first housing 6. As shown in FIG. 4, the air guide plate 13 of the present embodiment has a trapezoidal shape in a front cross-sectional view.

  As shown in FIG. 6, the air guide plate 13 has a first surface 13 a on the downstream side of the ventilation port 22 in the flow direction of the wind sent from the blower 12. The first surface 13 a is a surface that guides the wind flowing from the ventilation opening 22 toward the bottom 6 a of the first housing 6 above the cooking cabinet 10. The first surface 13a is an inclined surface that rises from the upstream side to the downstream side in the wind flow direction. The first surface 13 a is a surface that is inclined with respect to the opening surface of the ventilation port 22. As shown in FIG. 3, the first surface 13a extends in the depth direction of the cooking cabinet 10. The upper end of the first surface 13a is connected to a second surface 13b which is a surface substantially parallel to the bottom 6a of the first housing 6.

(Operation of cooking device)
FIG. 7 is a schematic cross-sectional view of a main part of the cooking device 1 according to the first embodiment. FIG. 7 is a view of a horizontal section passing through the gap 21 as viewed from above. Note that the partition wall 23 is not shown in FIG. 7 to avoid complication of the drawing. Arrows X1 and X2 shown in FIG. 7 conceptually show the flow of wind. The operation of the cooking device 1 will be described with reference to FIGS.

  When the inside of the cooking cabinet 10 is heated by the second heating device 11, the heat of the heated cooking cabinet 10 is transferred to the first housing 6. Here, inside the first housing 6, there are components having low heat resistance such as the control device 8 and components made of resin. For components having low heat resistance, suppression of temperature rise is desired. Thus, in the present embodiment, the control device 8 operates the blower 12 intermittently or continuously during the operation of the second heating device 11.

  When the blower 12 operates, the air in the second housing 7 is sucked into the blower 12 and the wind is sent from the blower 12. The air sent from the blower 12 flows into the gap 21 through the first air guide duct 24 and the air vent 22 as shown by an arrow X in FIG. The gap 21 is a space between the upper wall 10 a of the cooking cabinet 10 and the bottom 6 a of the first housing 6, and the ventilation opening 22 is within the height of the gap 21. When the wind flows through the gap 21, the wind collides with the bottom 6a of the first housing 6, and the bottom 6a is cooled. For this reason, the temperature rise of the first housing 6 and the components in the first housing 6 due to the heat from the second heating device 11 of the cooking cabinet 10 can be suppressed.

  Further, in the present embodiment, the air guide plate 13 is provided downstream of the ventilation port 22. The wind that has flowed into the gap 21 through the ventilation port 22 rises along the inclined first surface 13a of the baffle plate 13 as shown by an arrow X1 in FIGS. Toward the bottom 6a. For this reason, wind tends to collide with the bottom 6 a of the first housing 6. Therefore, it is possible to further suppress the temperature of the first housing 6 and the components in the first housing 6 from becoming high. In addition, since the wind is guided toward the bottom 6a of the first housing 6 by the first surface 13a, even when the flow passage cross-sectional area of the gap provided below the bottom 6a through which the air flows is small, The wind easily flows in this gap. Therefore, the first housing 6 and the components in the first housing 6 can be efficiently cooled. In other words, it is possible to reduce the height of the gap through which the air below the bottom 6a flows, and increase the height of the cooking cabinet 10 by that much.

  The air guide plate 13 also functions as a heat shield plate that suppresses transfer of heat from the second heating device 11 to the first housing 6 via air. For this reason, the temperature rise of the first housing 6 and the components in the first housing 6 can be suppressed.

  In addition, the first surface 13 a of the air guide plate 13 of the present embodiment extends in the depth direction of the cooking cabinet 10. Therefore, the wind colliding with the first surface 13a through the ventilation opening 22 is guided upward as described above, and is also guided forward or backward as indicated by an arrow X2 in FIG. That is, the wind that has collided with the first surface 13a flows upward while diverging back and forth. For this reason, it is possible to cool the region extending in the depth direction of the bottom 6 a of the first housing 6 by colliding the wind with the region extending in the depth direction of the bottom 6 a of the first housing 6.

  In FIG. 6, the height of the gap 21 between the bottom 6a of the first housing 6 and the upper wall 10a of the cooking cabinet 10 is shown as a height H1. Further, the height dimension of the ventilation port 22 is shown as a height H2. It is preferable that the height H1 and the height H2 have a relationship of H2 ≦ H1. When H2 = H1, it is more preferable that the ventilation port 22 and the outlet of the first ventilation duct 24 are at the same height position. By doing so, the cooling air flowing out of the first air guide duct 24 can be guided to the first surface 13a of the air guide plate 13 with a small pressure loss. Also, H2 <H1 may be satisfied. In this case, it is better that the step between the lower end of the ventilation port 22 and the upper wall 10a is small. Further, it is better that the step between the upper end of the ventilation opening 22 and the bottom 6a is small. By doing so, bending of the wind flowing into the gap 21 from the ventilation port 22 is suppressed, and pressure loss of the wind is suppressed.

  The wind flowing under the bottom 6 a of the first housing 6 flows into the exhaust duct 4 and flows inside the exhaust duct 4. The wind flowing through the exhaust duct 4 flows out of the cooking device 1 through the exhaust port 3.

  As described above, according to the present embodiment, the gap 21 between the upper wall 10a of the cooking cabinet 10 and the bottom 6a of the first housing 6 is used as a flow path of the wind. It is possible to suppress an increase in the temperature of components housed in the housing 6.

Embodiment 2 FIG.
In the present embodiment, a modified example of the air guide plate 13 will be described. In the present embodiment, a description will be given focusing on differences from the first embodiment.

  FIG. 8 is a diagram illustrating the air guide plate 13 and the ventilation holes 22 according to the second embodiment. In FIG. 8, the arrows conceptually show the flow of the wind. The air guide plate 13 of the present embodiment has a third surface 13c continuous with the lower end of the first surface 13a. The third surface 13c is a surface that stands substantially perpendicular to the upper wall 10a of the cooking cabinet 10. Following the example of the first surface 13a shown in FIG. 3, the third surface 13c also extends in the depth direction of the cooking cabinet 10. The third surface 13c is provided at a position where a part or the whole thereof overlaps with the ventilation opening 22 in the height direction. The third surface 13c is a surface substantially parallel to the opening surface of the ventilation port 22.

  As described above, since the third surface 13 c that is substantially parallel to the opening surface of the ventilation port 22 is provided in the air guide plate 13, the wind that has flowed into the gap 21 from the ventilation port 22 is substantially perpendicular to the third surface. It collides with the surface 13c. For this reason, the effect that the air is diverted in the front-back direction of the cooking cabinet 10 by the air guide plate 13 is enhanced. For this reason, it is possible to cool the region extending in the depth direction of the bottom 6 a of the first housing 6.

  In FIG. 8, the height between the bottom 6a of the first housing 6 and the second surface 13b of the baffle plate 13 is indicated by a height H3. The ratio of the height H3 to the height H1 is preferably 20% or more and 30% or less. That is, (0.2H1 ≦ H3 ≦ 0.3H1). With such a configuration, the wind that has flowed into the gap 21 through the ventilation port 22 collides with the third surface 13c and moves forward or backward (see the arrow X2 in FIG. 7) and the first surface 13a. The component flows along the bottom 6a of the first housing 6 (see arrow X1 in FIG. 7) and is well-balanced.

  When the ratio of the height H3 to the height H1 is small, for example, when H3 <0.2H1, the component of the wind flowing forward or backward of the cooking cabinet 10 along the third surface 13c increases. . If it does so, the component of the wind which goes to the bottom 6a of the 1st housing 6 along the 1st surface 13a will decrease. On the other hand, when the ratio of the height H3 to the height H1 is large, for example, when H3> 0.3H1, the component of the wind heading toward the bottom 6a of the first housing 6 along the first surface 13a increases. . If it does so, the component of the wind which flows in the front or back of the cooking cabinet 10 along the 3rd surface 13c will decrease. When there is an area through which the wind does not flow, the temperatures of the first housing 6 and the components inside the first housing 6 tend to increase.

  However, by adopting a configuration such as 0.2H1 ≦ H3 ≦ 0.3H1 as in the present embodiment, the bias between the upward component and the forward and backward component of the wind flowing through the gap 21 is reduced. Become. Therefore, the bottom 6a of the first housing 6 can be efficiently cooled in the front-rear direction and in the width direction.

Embodiment 3 FIG.
In the present embodiment, an example of the size and positional relationship between the gap 21 and the ventilation opening 22 will be described. In the present embodiment, a description will be given focusing on differences from the first embodiment.

  FIG. 9 is a perspective view in which a part of the cooking device 1 according to Embodiment 3 is seen through. FIG. 10 is a schematic sectional view of a main part of the cooking device 1 according to the third embodiment. FIG. 10 shows a cross section in the front-rear direction at a position passing through the ventilation opening 22 of the cooking device 1. FIG. 11 is a schematic sectional view of a main part of the cooking device 1 according to the third embodiment. FIG. 11 is a view of a horizontal section passing through the gap 21 as viewed from above. Note that the partition wall 23 is not shown in FIGS. 10 and 11 to avoid complication of the drawing.

  The length L2 of the ventilation opening 22 in the depth direction of the present embodiment is shorter than the length L1 of the gap 21 in the depth direction. The front end of the ventilation opening 22 is located at the same position as the front end of the gap 21, that is, the front end of the air guide plate 13, or at a position behind the front end. The rear end of the ventilation opening 22 is located at the same position as the rear end of the gap 21, that is, the rear end of the air guide plate 13, or before the rear end. It can be said that at least a part of the air guide plate 13 is arranged within a range of the width of the ventilation port 22 when the opening surface of the ventilation port 22 is viewed from the front. Therefore, when the height of the ventilation port 22 and the gap 21 is the same, the cross-sectional area of the flow path of the wind at the ventilation port 22 is smaller than the cross-sectional area of the flow path of the wind at the clearance 21. Then, the flow path cross-sectional area is larger in the gap 21 than in the ventilation port 22. Then, as shown by an arrow X2 in FIG. 11, the wind tends to spread in the depth direction of the cooking cabinet 10. Therefore, the wind easily collides with a wide area in the depth direction of the wind guide plate 13, and the wind guide effect by the wind guide plate 13 can be enhanced.

  Further, in a state where the ventilation opening 22 is viewed from the front, the first surface 13 a of the air guide plate 13 may be arranged within a range of the height of the ventilation opening 22. This makes it easier for the wind to flow above the air guide plate 13 from right to left on the paper as shown by the arrow X1 in FIG. Therefore, the wide area in the width direction of the bottom 6a of the first housing 6 disposed above the air guide plate 13 is cooled by the wind.

  Furthermore, air guide plate 13 of the present embodiment is arranged at a position that covers the entirety of second heating device 11 provided in cooking cabinet 10. That is, as shown in FIG. 11, the air guide plate 13 is provided at a position overlapping with all of the second heating device 11 in a plan view. For this reason, the action of the wind guide plate 13 to guide the wind extends over the entire plane area of the second heating device 11 and enhances the effect of suppressing the temperature rise of the first housing 6 and the components in the first housing 6. Can be. In addition, the effect of the wind guide plate 13 as a heat shield plate that suppresses transmission of heat from the second heating device 11 to the first housing 6 via air can be enhanced.

Embodiment 4 FIG.
In the present embodiment, a mode in which a shielding plate 30 that suppresses diffusion of wind flowing under the first housing 6 will be described. In the present embodiment, a description will be given focusing on differences from the first embodiment.

  FIG. 12 is a perspective view in which a part of the cooking device 1 according to Embodiment 4 is seen through. FIG. 13 is a schematic cross-sectional view of a main part of the cooking device 1 according to the fourth embodiment. FIG. 13: is the figure which looked at the cross section of the width direction which passes through the baffle plate 13 of the cooking device 1 from the front. The cooking device 1 of the present embodiment includes four shielding plates 30. The shielding plate 30 is made of, for example, a metal plate, and has a first plate 31, a second plate 32, and a connection portion 33. Although the two shield plates 30 shown in FIG. 12 have different directions with respect to the cooking cabinet 10, they have the same basic structure. In order to avoid complication of the drawing, reference numerals of the first plate 31, the second plate 32, and the connecting portion 33 are assigned to only one shielding plate 30.

  The first plate 31 of the shielding plate 30 extends on the same plane as the upper wall 10a of the cooking cabinet 10. Here, it is not necessarily required that they are exactly the same on the same plane. However, as the step between the upper wall 10a and the first plate 31 is larger, the pressure loss of the wind flowing over them becomes larger. Therefore, the smaller the step, the better from the viewpoint of reducing the pressure loss. The second plate 32 of the shield plate 30 is a member that extends upward from the edge of the first plate 31 that is the farthest position from the cooking cabinet 10. The second plate 32 is connected to the bottom 6 a of the first housing 6 via the connection part 33. As illustrated in FIGS. 12 and 2, the connecting portion 33 is desirably configured to be in contact with the bottom 6 a by a surface. The connection portion 33 and the bottom 6a are connected by screwing or welding.

  According to the present embodiment, the first plate 31 extending on the same plane as the upper wall 10 a of the cooking cabinet 10 suppresses the wind flowing through the gap 21 from flowing to the lower side of the cooking cabinet 10. For this reason, the wind that has flowed through the gap 21 does not flow near the four sides of the cooking cabinet 10, but tends to go to the exhaust duct 4 (see FIG. 2 and the like). Therefore, the contact of the wind to the outer surface of the cooking cabinet 10 is suppressed, and a decrease in the temperature inside the cooking cabinet 10 due to the wind can be suppressed.

  Moreover, the first plate 31 of the present embodiment may be connected to the cooking cabinet 10. In this case, the shielding plate 30 functions as a connection component that connects the cooking cabinet 10 and the first housing 6. Thus, the connection between the cooking cabinet 10 and the first housing 6 and the suppression of the flow of air to the lower side of the upper wall 10a of the cooking cabinet 10 can be realized by a single member called the shielding plate 30. In this embodiment, a part of the plate constituting the upper wall 10a of the cooking cabinet 10 may be used as the first plate 31. That is, the first plate 31 and the upper wall 10a are formed of a single plate, and members forming the four side walls and the bottom of the cooking cabinet 10 are also attached to the lower surface of the upper wall 10a. In this way, the number of components of the cooking device 1 is reduced, and the assemblability of the cooking device 1 is improved.

Embodiment 5 FIG.
In the present embodiment, a configuration relating to the air path of the air sucked by the blower 12 will be described. In the present embodiment, a description will be given focusing on differences from the first embodiment.

  FIG. 14 is a schematic partial cross-sectional view of the cooking device 1 according to Embodiment 5. FIG. 14 shows a portion in the vicinity of the blower 12 in a cross section of the front side of the heating cooker 1 in the width direction. An intake port 26 is formed at the bottom of the second housing 7. The intake port 26 in FIG. 14 is constituted by a plurality of openings. The intake surface of the blower 12 is provided at a position facing the intake port 26. A second air duct 25 is provided between the air inlet 26 and the blower 12. The second air guide duct 25 is formed by a substantially cylindrical member having an air passage therein. In addition, a part of the member configuring the second air guide duct 25 may configure the wall of the second housing 7. The second air guide duct 25 has a shape extending substantially straight upward from the air inlet 26 toward the blower 12.

  When the blower 12 operates, the air outside the second housing 7 is sucked into the blower 12 through the air inlet 26 and the second air guide duct 25, and the wind is sent from the blower 12. The wind sent from the blower 12 flows into the gap 21 through the first air guide duct 24 and the air vent 22. When the wind flows through the gap 21, the wind collides with the bottom 6a of the first housing 6, and the bottom 6a is cooled. For this reason, the temperature rise of the first housing 6 and the components in the first housing 6 due to the heat from the second heating device 11 of the cooking cabinet 10 can be suppressed.

  According to the present embodiment, blower 12 sucks air outside second housing 7 and sends air to gap 21. The temperature of the air outside the second housing 7 is lower than the temperature of the air inside the second housing 7 that houses the heat-generating components such as the first heating device 5 and the second heating device 11. Therefore, low-temperature air can be sent from the blower 12. Therefore, it is possible to suppress the temperature of the first housing 6 and the components in the first housing 6 from becoming high.

  The positions and shapes of the air inlet 26 and the second air duct 25 and the position of the blower 12 shown in FIG. 14 are examples. In addition to or instead of the bottom of the second housing 7, an intake port 26 may be formed on a side wall of the second housing 7.

Embodiment 6 FIG.
The heating cooker 1 according to the first to fifth embodiments is a stationary heating cooker that is used by being placed on a table, or a built-in heating cooker that is used by being incorporated into a kitchen top plate. May be applied. In the present embodiment, a configuration example in the case where the heating cooker 1 is used as a built-in heating cooker will be described.

  FIG. 15 is a schematic cross-sectional view of a state where the cooking device 1 according to Embodiment 6 is incorporated in a kitchen top plate 200. FIG. 15 shows a cross-sectional view in the width direction of the cooking device 1 as viewed from the front, together with the kitchen top plate 200. An opening 201 slightly larger than the outer shape of the second housing 7 is formed in the kitchen top plate 200. The lower portion of the top plate 2, that is, the second housing 7 in this embodiment is dropped into the opening 201, and the cooking device 1 is installed on the kitchen top plate 200.

  The outer dimension H4 in the height direction of the first housing 6 can be equal to or less than the thickness H5 of the kitchen top plate 200. That is, H4 ≦ H5 can be satisfied. The thickness H5 of the kitchen top plate 200 is, for example, 40 mm. When such a dimensional relationship is adopted, the outside of the first housing 6 is surrounded by the kitchen top plate 200 over the entire height, but as described in Embodiments 1 to 5, The first housing 6 and the components in the first housing 6 are efficiently cooled. For this reason, even if the first housing 6 is arranged at a position surrounded by the kitchen top plate 200 and hardly escaping heat, the first housing 6 and the components inside the first housing 6 are prevented from becoming hot. be able to.

  Note that two or more of the first to sixth embodiments are used in combination with each other. By doing so, it is possible to further suppress the first housing 6 and the components in the first housing 6 from becoming hot. Further, in the above-described embodiment, an example in which the first housing 6 is accommodated in the second housing 7 has been described, but part or all of the first housing 6 is not accommodated in the second housing 7. An embodiment can also be adopted. Specifically, the first housing 6 and the second housing 7 are connected so that the bottom 6a of the first housing 6 is located above the upper end of the side wall of the second housing 7. Can be.

  REFERENCE SIGNS LIST 1 cooking device, 2 top plate, 3 exhaust port, 4 exhaust duct, 5 first heating device, 6 first housing, 6a bottom, 7 second housing, 8 control device, 9 door, 10 cooking cabinet, 10a Upper wall, 10b side wall, 11 second heating device, 12 blower, 13 air guide plate, 13a first surface, 13b second surface, 13c third surface, 21 gap, 22 ventilation opening, 23 partition wall, 24 first conduction Wind duct, 25 second air duct, 26 air inlet, 30 shield plate, 31 first plate, 32 second plate, 33 connection, 200 kitchen top plate, 201 opening.

Claims (12)

A mounting section on which an object to be heated is mounted;
A first heating device that is provided below the placement unit and heats an object to be placed placed on the placement unit;
A first housing provided below the mounting portion, having at least a bottom, and housing the first heating device;
A cooking cabinet having an upper wall, disposed between the outer surface of the upper wall and the outer surface of the bottom of the first housing via a gap;
A second heating device for heating the inside of the cooking cabinet,
A blower,
A second housing accommodating the cooking cabinet and the blower,
A heating cooker in which a vent hole communicating with the blower and the gap is formed within a range of the height of the gap between the bottom of the first housing and the upper wall of the cooking cabinet. The heating cooker according to claim 1, further comprising: a wind guide plate provided on the upper wall of the cooking cabinet and guiding wind flowing in the gap to the bottom of the first housing. The height dimension of the ventilation opening is not more than the height dimension of the gap, and is not less than the height dimension between the outer surface of the air guide plate and the outer surface of the bottom of the first housing. 2. The heating cooker according to 2. The heating according to claim 2 or 3, wherein a height dimension between an outer surface of the air guide plate and an outer surface of the bottom of the first housing is not less than 20% and not more than 30% of the gap. Cooking device. 5. At least a part of the air guide plate is arranged within a range of the width of the ventilation port in a state where the opening surface of the ventilation port is viewed from the front. 5. Heating cooker. The heating cooker according to any one of claims 2 to 5, wherein the air guide plate has a surface inclined with respect to an opening surface of the ventilation port. The heating cooker according to any one of claims 2 to 6, wherein the air guide plate has a surface parallel to an opening surface of the ventilation port. The heating cooker according to any one of claims 1 to 7, further comprising a shielding plate that prevents wind flowing in the gap from flowing below the upper wall of the cooking cabinet. The shielding plate,
A first plate extending coplanar with the upper wall of the cooking cabinet and connected to the cooking cabinet;
The heating cooker according to claim 8, further comprising a second plate extending upward from the first plate and connected to the first housing. The said shielding board is a part of board | plate which comprises the said upper wall of the said cooking cabinet, Comprising: The part extended outside the side wall of the said cooking cabinet is comprised. Heating cooker. The heating cooker according to any one of claims 1 to 10, wherein the second housing is provided with an intake port communicating with the blower. The heating cooker is a built-in heating cooker that is installed by being incorporated into an opening formed in the kitchen top plate,
The heating cooker according to any one of claims 1 to 11, wherein an outer dimension of the first housing in a height direction is equal to or less than a thickness of the kitchen top plate.

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