JP5031010B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker used as a kitchen built-in type or a kitchen stationary type.

  As a conventional induction heating cooker, an intake fan and an exhaust fan are provided inside the main unit, and the heating coil and the control board that drives the heating coil are integrally configured as a heating unit. There are some which cool the control board, the heating coil, and further the grill part disposed below the heating unit (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-354264 (page 2-3, FIGS. 1 and 4)

However, in the cooling structure as described above, since the heating coil and the control board are integrally formed, it is necessary to form an air path below the heating coil, particularly when the heating coil is cooled, and heating is performed thereon. Since it is necessary to dispose the grill portion below the unit, there is a problem that it is difficult to secure an air passage area necessary for cooling in a space between the heating coil and the control board.
On the other hand, if the heating coil storage chamber and the control board storage chamber are separated from each other inside the main body, it is necessary to form an air passage for communicating the two chambers, and a large space is required for the air passage. . Moreover, when cooking in a grill part, the heat | fever from the heating chamber of a grill part leaks, and it has become a problem that the main body side wall by the side of a heating chamber becomes high temperature.
In addition, in order to reduce the weight of conventional induction cooking devices as much as possible, the main body case is made of a thin metal plate. However, in such a lightweight structure, the main body side wall tends to be recessed, and the main body side wall is reinforced to prevent this. There was a need to do.

  In view of the above-described problems, the present invention provides a heating coil storage chamber and a control board storage chamber separately provided in the main body, and is cooled from the control board storage chamber via the lower side of the heating chamber. It aims at providing the induction heating cooking appliance which cooled the main body side wall by the side of a heating chamber by introduce | transducing a part of wind.

An induction heating cooker according to the present invention includes a main body, a coil storage chamber provided inside the main body, in which a plurality of heating coils are stored, a substrate storage chamber in which a control board for driving the heating coils is stored, A cooling fan that supplies cooling air to the inside of the main body, a reinforcing member that is laid across the side wall on the front side of the main body, and a heating chamber that is partitioned from the substrate housing chamber by a partition wall,
An inlet provided in the partition wall for introducing a part of the cooling air blown into the substrate housing chamber, and a gap between the main body side wall and the heating chamber through the outlet, traversing the bottom of the heating chamber from the inlet. It has a side wall and a cooling air duct leading to the,
The heating chamber has a double wall structure having a heat insulating layer, and the side wall cooling air passage is formed by concavely projecting the bottom surface of the double wall .

  According to the present invention, a part of the cooling air blown into the substrate housing chamber passes from the entrance of the partition wall through the side wall cooling air passage on the lower side of the heating chamber to the gap between the main body side wall and the heating chamber from the outlet. Since it comes out and stands up, the side wall of the main body can be cooled, and the side wall of the main body on the side opposite to the substrate housing chamber can be efficiently prevented from becoming hot.

It is a perspective view from the front side which shows the outline | summary of the induction heating cooking appliance in Embodiment 1 of this invention. It is the schematic perspective view which looked at the state which removed the top plate of FIG. 1 from the back side. FIG. 2 is a schematic side sectional view of FIG. 1. It is a schematic perspective view of the induction heating cooking appliance in Embodiment 2 of this invention. FIG. 5 is a schematic sectional side view of FIG. 4. It is a schematic perspective view which shows the state which removed the top plate of the induction heating cooking appliance in Embodiment 3 of this invention. FIG. 7 is a perspective view of the operation board of FIG. 6. It is sectional drawing of FIG. It is a schematic perspective view which shows the structure of the heating chamber of the induction heating cooking appliance in Embodiment 4 of this invention. It is a schematic perspective view which shows another structural example of the heating chamber of the induction heating cooking appliance in Embodiment 5 of this invention. It is sectional drawing of FIG.

Embodiment 1 FIG.
1 to 3 show a kitchen stationary induction cooker according to Embodiment 1 of the present invention. FIG. 1 is a schematic perspective view of the induction cooker as viewed from the front side, and FIG. It is the schematic perspective view seen from the side, and has shown the state which removed the top plate. FIG. 3 is a schematic side sectional view of the induction heating cooker.

  This induction heating cooker includes a main body 1 formed in a box shape, a plurality of electromagnetic induction heating coils 2a and 2b disposed above the main body 1, and a lower right heating coil 2b when viewed from the front. A substrate storage chamber 20 provided in the front, a grill 30 provided below the left heating coil 2a when viewed from the front, an intake port 3 provided on the back side of the main body 1, and a rear upper surface of the main body 1. An exhaust port 4 provided and a cooling fan 5 provided in the vicinity of the intake port 3 are provided. In the figure, reference numeral 9 denotes an electric heater, for example, a radiant heater, which is installed as necessary. Reference numeral 40 denotes an operation panel for adjusting the heating state of the heating coils 2a and 2b, the grill portion 30, and the like, and a heating amount adjustment dial 42 and a switch 43 are provided.

A top plate 10 on which a cooking pot (not shown) is placed is attached to the upper surface of the main body 1. The top plate 10 is provided with a display unit 41 made up of a liquid crystal display device that displays heating conditions such as the heating coils 2a and 2b and the grill unit 30.
Each assembly of the heating coils 2a and 2b is supported on the coil unit support plate 12 in a state of being biased upward by a spring. Therefore, a coil housing chamber 6 for housing the heating coils 2 a and 2 b is formed in the upper part of the main body 1 by the coil unit support plate 12 and the top plate 10.
The substrate housing chamber 20 accommodates one or a plurality of control boards 21 on which electronic / electrical components for driving the heating coils 2a and 2b, heat sinks, etc. are mounted, and is arranged substantially parallel to the flow direction of the cooling air. It is installed.

  On the front side of the main body 1, a reinforcing member 7 for reinforcing the side wall of the main body 1 is placed between the side walls. The reinforcing member 7 has a U-shaped cross-sectional shape, and an opening of the reinforcing member 7 faces the coil housing chamber 6 and the substrate housing chamber 20 to form a cooling air passage 8 that allows the chambers 6 and 20 to communicate with each other. is doing. That is, the reinforcing member 7 is a dual-purpose member that combines both the reinforcement of the side wall on the front side of the main body 1 and the formation of the air passage. Therefore, the front side end portion 12 a of the coil unit support plate 12 is installed facing the opening surface of the U-shaped reinforcing member 7.

  Further, in order to concentrate the cooling air on each of the heating coils 2a and 2b, the air path guide members 13a and 13b are erected on the coil unit support plate 12 so as to extend from the reinforcing member 7 toward the one heating coil 2a. Has been. The cooling air passages 8a and 8b are formed in parallel with the heating coils 2a and 2b in communication with the cooling air passage 8 by the air passage guide members 13a and 13b. Note that the cooling air from the cooling fan 5 may be partially branched by a duct (not shown) and directly blown to the other heating coil 2b.

  The back surface of the main body 1 is formed in a shape in which a lower back surface 14b is recessed substantially uniformly over the entire width of the main body 1 with respect to the upper back surface 14a. Is provided. By providing the air inlet 3 in the hollow portion 14 in which the lower part on the back side of the main body 1 is recessed as described above, even when the main body 1 is installed almost closely to the wall surface 101 on the kitchen side as shown in FIG. Intake can be secured. In addition to the lower back surface 14b, the air inlet 3 can be provided on an inclined surface 14c that connects the upper back surface 14a and the lower back surface 14b.

  Next, the cooling action at the time of cooking by this induction cooking device will be described. The cooling air is taken into the main body 1 from the air inlet 3 by rotating the cooling fan 5. The cooling air taken into the main body 1 flows as shown by arrows in FIG. 3 to cool the control board 21 in the board housing chamber 20 to suppress the temperature rise of the board mounted components, and then the U-shaped cross section. Enters the cooling air passage 8 formed by the reinforcing member 7. Since the cooling air passage 8 of the reinforcing member 7 communicates with both the substrate housing chamber 20 and the coil housing chamber 6 provided with the heating coils 2a and 2b, the cooling air emitted from the substrate housing chamber 20 is the cooling air. It flows through the path 8 in the length direction of the reinforcing member 7 and enters the coil accommodating chamber 6, that is, the gap formed by the top plate 10 and the coil unit support plate 12. Next, the cooling air flows below the heating coils 2 a and 2 b to cool the heating coils 2 a and 2 b, and then is discharged to the outside from the exhaust port 4 provided in the top plate 10.

  In the first embodiment, in order to reinforce the side wall of the main body 1, a reinforcing member 7 having a U-shaped cross section is placed between the side walls on the front side of the main body 1, and the reinforcing member 7 having the U-shaped cross section is formed. Since the cooling air passage 8 is communicated with both the coil housing chamber 6 and the substrate housing chamber 20, the reinforcing member 7 has both the reinforcement of the side wall on the front side of the main body 1 and the air passage formation. Thus, it is not necessary to provide an air passage or opening having a large area, and a space-saving structure can be obtained. Further, the main body side wall is not recessed by the reinforcing member 7, and the weight of the main body 1 can be reduced.

  The cross-sectional shape of the reinforcing member 7 is not necessarily limited to the U shape. For example, it may be C-shaped. Moreover, if it is a U-shaped cross section, a duct can be easily formed using a groove type member.

Embodiment 2. FIG.
Next, the case where this invention is applied as a kitchen built-in type induction heating cooking appliance is shown. 4 is a schematic perspective view of the induction heating cooker according to the second embodiment, and FIG. 5 is a schematic side sectional view.
The induction heating cooker of the second embodiment has the same configuration as that of the first embodiment except that the top plate 10 is attached to the attachment hole 102 of the kitchen table 100, and has the same effects.
In the case of the kitchen built-in type, the weight of the main body is supported by the top plate 10, so that the thin plate main body side wall can be reinforced by placing the reinforcing member 7 horizontally inside the main body 1. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted.

Embodiment 3 FIG.
In the third embodiment, a modification of the display unit 41 shown in the first and second embodiments is shown in FIG. 6 is a schematic perspective view showing a state where the top plate of the induction heating cooker in Embodiment 3 is removed, FIG. 7 is a perspective view of the operation board, and FIG. 8 is a cross-sectional view of FIG.
As shown in the first and second embodiments, the display unit 41 is provided on the front side of the top plate 10. The display unit 41 is a liquid crystal display device that indicates heating conditions such as the heating coils 2 a and 2 b and the grill unit 30. Yes. Therefore, in the third embodiment, in addition to the display unit 41, an operation board (switch board) 15 is mounted on the reinforcing member 7, thereby providing an easy-to-use induction heating cooker. The operation board 15 is provided with a plurality of switches 18 and a light emitting diode (LED) 19 that is turned on and off in conjunction with the switch 18.

  Further, as shown in FIGS. 7 and 8, the operation substrate 15 is cooled by the cooling air flowing through the cooling air passage 8 of the reinforcing member 7 in order to suppress the temperature rise of the operation substrate 15. An example of the configuration is shown in FIG. For example, the reinforcing member 7 is configured by an L-shaped member, the substrate holder 16 is attached to a portion corresponding to the upper flange portion, and the U-shaped reinforcing member 7 is configured by the substrate holder 16 and the L-shaped member. . The upper surface of the U-shaped reinforcing member 7, that is, the upper flange, may be configured as the substrate holder 16. Further, the substrate holder 16 is provided with a communication hole 17 communicating with the cooling air passage 8, and a part of the cooling air flowing through the cooling air passage 8 of the reinforcing member 7 is led out from the communication hole 17. The lower surface of the substrate 15 can be cooled.

Embodiment 4 FIG.
FIG. 9: is a schematic perspective view which shows the structure of the heating chamber of the induction heating cooking appliance in Embodiment 4 of this invention, and has shown the state except the front plate part.
The grill 30 is provided with a heating chamber 31 used for grilling fish. In the fourth embodiment, in order to prevent the heat from the heating chamber 31 from leaking and the main body side wall 11 on the side opposite to the substrate storage chamber 20 (on the heating chamber 31 side) from becoming high temperature, the substrate storage chamber 20 is heated. A side wall cooling air passage 33 that communicates with the gap between the main body side wall 11 and the heating chamber 31 through the lower side of the chamber 31 is provided. That is, the partition wall 22 that partitions the substrate storage chamber 20 and the heating chamber 31 is provided with the inlet 33a of the side wall cooling air passage 33 so that the side wall cooling air passage 33 communicating with the inlet 33a crosses the base 32 of the heating chamber 31. It is to be provided. The outlet 33b of the side wall cooling air passage 33 is opened on the side surface of the base 32 so that the cooling air that has passed through the side wall cooling air passage 33 rises from the outlet 33b into the gap between the main body side wall 11 and the heating chamber 31.

  With this configuration, the cooling air blown by the cooling fan 5 is blown into the substrate housing chamber 20 to cool the control substrate 21 as described above, and a part of the cooling air enters the inlet 33a from the substrate housing chamber 20. The main body side wall 11 can be cooled because it rises through the side wall cooling air passage 33 on the lower side of the heating chamber 31 and rises from the outlet 33b into the gap between the main body side wall 11 and the heating chamber 31. Therefore, it is possible to efficiently prevent the main body side wall 11 on the side opposite to the substrate housing chamber 20 from becoming high temperature. In addition, since the side wall cooling air path 33 can cool the main body side wall 11 more effectively rather than the direction provided in the front part side of the heating chamber 31, it is preferable.

Embodiment 5 FIG.
FIG. 10 is a schematic perspective view showing another configuration example of the heating chamber of the induction heating cooker according to the fifth embodiment of the present invention, and FIG. 11 is a sectional view thereof.
In the fifth embodiment, the peripheral wall of the heating chamber 31 has a double wall structure having a heat insulating layer 34 made of an air layer or the like, and a part of the bottom wall is recessed in a convex shape so that the side wall cooling air passage as described above is used. 33 is formed.

  With this configuration, the amount of heat leaked from the heating chamber 31 is reduced by the double wall structure of the heating chamber 31 having the heat insulating layer 34, and the side wall cooling air passage 33 provided so as to cross the bottom of the heating chamber 31 is used. Since the main body side wall 11 is cooled by the cooling air, it becomes more useful for preventing the main body side wall 11 from being heated at a high temperature. Further, since the side wall cooling air passage 33 is formed by using a part of the double wall at the bottom of the heating chamber 31, it is not necessary to manufacture parts for forming the side wall cooling air passage 33, leading to cost reduction. .

  DESCRIPTION OF SYMBOLS 1 Main body, 2a, 2b Heating coil, 3 Intake port, 4 Exhaust port, 5 Cooling fan, 6 Coil accommodating chamber, 7 Reinforcement member, 8, 8a, 8b Cooling air path, 10 Top plate, 11 Main body side wall, 12 Coil unit Support plate, 15 operation substrate, 16 substrate holder, 17 communication hole, 20 substrate accommodation chamber, 21 control substrate, 22 partition wall, 30 grill section, 31 heating chamber, 32 base, 33 side wall cooling air passage, 34 heat insulation layer, 40 Operation panel, 41 display section.

Claims (1)

A main body, a coil housing chamber in which a plurality of heating coils are housed, a substrate housing chamber in which a control board for driving the heating coils is housed, and a cooling fan that supplies cooling air to the inside of the body And a reinforcing member laid across the side wall on the front side of the main body, and a heating chamber partitioned from the substrate housing chamber by a partition wall,
An inlet provided in the partition wall for introducing a part of the cooling air blown into the substrate housing chamber, and a gap between the main body side wall and the heating chamber through the outlet, traversing the bottom of the heating chamber from the inlet. It has a side wall and a cooling air duct leading to the,
The induction heating cooker characterized in that the heating chamber has a double wall structure having a heat insulating layer, and the side wall cooling air passage is formed by concavely projecting the bottom surface of the double wall .

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