JPH109583A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate thermal deterioration or contamination of a mounting surface on which a cooker body is mounted. SOLUTION: An exhaust port 12 having a plurality of holes 12a aligned in a longitudinal direction is formed at a left side site of a partition plate 11 at a bottom plate 2a of an outer case 2. The port 12 and a machine room are partitioned by a partition plate 11 in a lower part of an inner case 3. The port 12 communicates with the room via a space Ka of the upper side of the case 3 and a space Kb of the left side. A heat shield 17 is opposed to the port 12 at a separate position, and provided at a lower surface of the plate 2a of the case 2 so as to cover substantially the entire area of the port 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cooking device having an improved cooling structure.

[0002]

Conventionally, in a heating cooker having an oven or grill function as a heater as a heat source and having a microwave oven function by a magnetron, the main body of the cooker is provided inside an outer box. The inner box is arranged with the space part of. An exhaust port is formed in a bottom plate portion of the outer box. When the inner box is moved toward one side plate of the outer box, a machine space is formed by a relatively large space on the opposite side. A magnetron and various electric parts are arranged in the machine room, and an auxiliary exhaust port is formed in a rear plate portion of the machine room. further,
A heater is provided on the upper plate portion and the bottom plate portion of the inner box.

Further, in this apparatus, when cooking in an oven or grill using a heater, in order to prevent the temperature of the outer box from rising due to the heat of the heater, cooling air is generated by a fan device provided in a machine room. The wind passes through the space between the outer box and the inner box, that is, the space around the inner box from the machine room, and is discharged from the exhaust port of the bottom plate portion of the outer box. At this time, the cooling air exchanges heat with the outer box and the inner box, and the temperature rises.

By the way, in the above-mentioned apparatus, there is no exhaust opening in the upper plate, the rear plate, and the side plate of the outer box except for the auxiliary exhaust port in the rear plate of the machine room. All the hot air transmitted from the cooking chamber is discharged from the exhaust port of the bottom plate portion, and the cooking appliance body can be brought closer to the wall, but the exhaust heat becomes high accordingly. This high-temperature cooling air is discharged from the exhaust port of the outer box bottom plate portion and directly hits the installation surface on which the cooking device body is installed, and heats the installation surface to cause thermal deterioration or fouling. There was a defect. An object of the present invention is to provide a heating cooker in which an installation surface on which a cooker main body is installed is not deteriorated or soiled by heat.

[0005]

SUMMARY OF THE INVENTION The present invention comprises an outer box and an inner box arranged inside the outer box with a space between the inner surface and the inner box. , A cooking appliance body having a heating chamber, a heat source for heating an object to be heated housed inside the cooking chamber, and a cooling air generated at a side portion of one side plate of the inner box. And a fan device for projecting this downward from the exhaust port of the outer case bottom plate through the inner box peripheral space, and a shield provided so as to be opposed to the exhaust port at a position separated from the exhaust port and to cover substantially the entire area of the exhaust port. It is configured to include a heat body.

[0006] In this configuration, the cooling air generated by the fan device is discharged downward from the exhaust port of the bottom plate of the outer box through the space around the inner box from the machine room. In this case, the cooling air exchanges heat with electric parts, an inner box, and the like existing in the machine room to increase the temperature. Thus, the high-temperature cooling air discharged from the exhaust port hits the heat shield. In this case, the heat shield
Since it is opposed to the exhaust port at a distance from the exhaust port, the exhaust action from the exhaust port is not hindered, and the heat shield is provided so as to cover almost the entire area of the exhaust port, All the cooling air coming out of the exhaust port hits the heat shield. Therefore, a relatively high-temperature cooling air does not hit the installation surface on which the cooking device main body is installed, and the installation surface is not thermally degraded or soiled.

[0007] In particular, if the heat shield is formed with a duct for leading the cooling air coming out of the exhaust port to the front, hot air is not blown to the rear part and the left and right parts of the cooking device. Therefore, for example, when a heating cooker is incorporated in the system kitchen, high-temperature cooling air does not hit the rear surface and the left and right side surfaces of the system kitchen.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, a schematic configuration will be described with reference to FIGS. The cooker main body 1 of the heating cooker includes an outer box 2 and an inner box 3. That is, the outer box 2 has a rectangular box shape with an open front surface, and an inner box 3 having a rectangular box shape with an open front surface is provided inside the outer box 2 with a space between the inner box 3 and the inner surface of the outer box 2. It is arranged. A flange 3a (see FIG. 2) is formed at the front open edge of the inner box 3 and is joined to the front edge of the outer box 2 and around the rear plate 3b (see FIG. 4). Also, a flange portion 3c is formed, and this is joined to the inner surface of the outer box 2. In this case, the inner box 3 is disposed slightly to the left of the inside of the outer box 2 when viewed from the front, and a machine room 4 is formed by a space opposite thereto. Inside the machine room 4, for example, an electric component (not shown) such as a magnetron used for microwave cooking is arranged, and a fan device 5 is arranged. The fan device 5 includes a fan motor 6 and a fan 7 and blows air upward. A bottom plate portion of the machine room 4 corresponding to a lower portion of the fan device 5 has an outside air intake 4a (FIG. 3).
Reference) is formed.

The inside of the inner box 3 is a cooking chamber 8. On the front surface of the cooking device main body 1, a door 9 for opening and closing the heating cooking chamber 8 is provided, and an operation panel 10 is provided. The rear side of the operation panel 10 is the machine room 4
It has been.

A partition plate 11 for separating left and right is provided in a lower left portion between the outer box 2 and the inner box 3. In the bottom plate portion 2a of the outer box 2, a plurality of long holes 12 formed side by side in the front-rear direction are formed on the left side of the partition plate 11.
a (see FIG. 1) is formed.
The exhaust port 12 and the machine room 4 are separated from each other by the partition plate 11.
Although partitioned at the lower part, they communicate with each other via the upper and left spaces of the inner box 3. Although not shown, an auxiliary exhaust port (not shown) is provided in the rear plate of the machine room 4 so that air that has cooled the machine room 4 is discharged.

On the other hand, a tubular heater 14 serving as a heat source is disposed on the upper plate portion of the inner box 3 together with the reflection plate 13, and a planar heater also serving as a heat source is provided on a lower surface portion of the bottom plate portion of the inner box 3. 1
5, and a motor 16 for rotating a turntable (not shown) is provided.

The heat shield 17 is attached to the lower surface of the bottom plate 2a of the outer box 2 so as to oppose the exhaust port 12 at a distance from the exhaust port 12 and cover almost the entire area of the exhaust port 12. . In this case, as shown in FIG.
The elongated rectangular main plate portion 17a is provided with rising plate portions 17b, 17c and 17d formed on the right and left sides and the rear side portion thereof. Duct 18 is formed. In this case, the bottom plate portion 2a of the outer box 2 is configured to cover the portion farther from the portion where the partition plate 11 is located than the exhaust port 12 side (the portion E side shown in FIG. 5).

On the lower surface of the main plate 17a of the heat shield 17, legs 19, 19 are integrally formed.
Legs 20, 20 made of synthetic resin (for example, polypropylene) are attached to the lower surface of the bottom plate 2a of the outer box 2 at positions opposite to the legs 19, 19. The heat shield 17 is formed of the same synthetic resin material as the legs 20, 20. ◎.

As shown in FIG. 3, top plates 21 and 21 are formed on the inner surface of the inner box 3, and
A top plate 22 used for oven cooking or grill cooking is removably mounted on 1, 21.

The heating cooker having such a configuration is, for example,
As shown in FIG. 3, it is installed in the recess S for the heating cooker of the system kitchen. In the above configuration, the heater 14,
A case where oven cooking or grill cooking using 15 as a heat source is performed will be described. An object to be heated is stored in the cooking chamber 8 in advance, and various switches on the operation panel 10 are appropriately operated to select and start oven cooking or grill cooking. Then, the heaters 14 and 1
5 is energized and the fan motor 6 of the fan device 5
Is energized.

The electric power to the heaters 14 and 15 causes the object to be heated in the cooking chamber 8 to be heated and cooked. Along with this, the temperature of the inner box 3 and the outer box 2 as well as the electric components in the machine room 4 rises. On the other hand, when the fan motor 6 is energized, the fan 7
Rotates, whereby air is sucked in from the outside air intake 4a of the machine room 4 to generate wind, that is, cooling wind. in this case,
A part of the cooling air is exhausted from the auxiliary exhaust port in the rear plate of the machine room 4, but the upper plate, the rear plate, and the side plate of the outer box 2 have no exhaust opening and the bottom plate. 2a, most of the cooling air passes through the machine room 4 from bottom to top, as indicated by the arrows in FIGS. 1 and 3, and then the inner box 3 and the outer box. Upper space K of the space between
a, passes through it to the left, flows into the left space Kb, passes through it downward, and is discharged from the exhaust port 12. In this case, the cooling air is supplied to the heating cooking chamber 8.
It exchanges heat with the heat transmitted from it and becomes hot air. Here, as described above, the upper plate portion, the rear plate portion, and the side plate portion of the outer box 2 include:
Since there is no exhaust opening, all of the cooling air (hot air) is discharged from the exhaust port 12.

The hot cooling air discharged from the exhaust port 12 hits the heat shield 17. In this case, the heat shield 17
Is opposed to the exhaust port 12 at a distance from the exhaust port 12, so that the exhaust operation from the exhaust port 12 is not hindered, and the heat shield 17 can cover almost the entire area of the exhaust port 12. , All the cooling air coming out of the exhaust port 12 hits the heat shield 17, so that the cooking device body 1
The cooling air does not hit the installation surface Sa where
The installation surface Sa is not thermally deteriorated or soiled.

As described above, according to the present embodiment, all the heat transmitted from the cooking chamber 8 is exhausted from the exhaust port 12 of the bottom plate 2a of the outer box 2.
c, Sd can be approached. In this case, the installation surface S
Although it is feared that the hot exhaust air hits a, as described above, according to the present embodiment, all the exhaust air (cooling air) coming out of the exhaust port 12 hits the heat shield 17, so that the cooking device body The cooling air does not hit the installation surface Sa on which the device 1 is installed, so that the installation surface Sa can be prevented from being thermally degraded or soiled. Further, since the heat shield 17 is made of synthetic resin,
This itself functions as a heat insulating member, and it is possible to effectively prevent the heat shield 17 from becoming hot.

According to this embodiment, the heat shield 17
Forms a duct 18 for guiding the cooling air coming out of the exhaust port 12 forward, so that the cooling air is discharged forward from a discharge port 18a located on the lower front surface of the cooking device 1.
Therefore, high-temperature cooling air does not hit the rear wall Sb and the left and right side walls Sc and Sd of the recess S of the system kitchen.
It is suitable for incorporation into a system kitchen.

Further, according to the present embodiment, the legs 19, 19 are formed integrally with the heat shield 17, so that the number of parts and the number of mounting steps can be reduced. In this case, since the heat shield 17 is made of the same material as the synthetic resin legs 20 and 20 provided on the bottom plate 2 a of the outer box 2, the legs 20 and 20 and the legs 19 and 19 are eventually formed. Are the same resin material, the legs 20, 20 and the legs 19, 19
Even if the wear is reduced, the wear is uniformly reduced, and the mounting state of the cooking device main body 1 can be reduced.

Furthermore, according to the present embodiment, the heat shield 1
7 covers the bottom plate portion 2a of the outer box 2 further to the exhaust port 12 side than the portion where the partition plate 11 is located, so that the bottom plate portion 2a of the outer box 2 is exposed to a high temperature and is likely to be exposed. Can be prevented. That is, the bottom plate 2a of the outer box 2
Is a passage for the cooling air up to the portion where the partition plate 12 is located, and the portion of the bottom plate portion 2a of the outer box 2 closer to the exhaust port 12 than the portion where the partition plate 12 is located is Although not a cooling air passage, the temperature may increase due to heat transfer. In this respect, according to the present embodiment, since the heat shield 17 covers the bottom plate 2a of the outer box 2 farther than the portion where the partition plate 12 is located on the side opposite to the exhaust port 12, the bottom plate 2a of the outer box 2 is also covered. In this case, it is possible to prevent exposure of a portion that tends to be high in temperature. Note that the heat shield may be simply a flat plate, in which case, the size of the heat shield is set larger than the exhaust port,
Then, it may be provided so as to face the exhaust port at a position separated from the exhaust port and cover almost the entire area of the exhaust port.

FIG. 7 shows a second embodiment of the present invention. In this embodiment, a duct 32 of a heat shield 31 is used.
The cross-sectional area of the discharge port 32a at
The feature is that it is larger than the cross-sectional area of. According to the second embodiment, since the cross-sectional area of the discharge port 32a is increased, the exhaust efficiency can be improved and the heat can be dispersed.

FIGS. 8 and 9 show a third embodiment of the present invention. This embodiment is characterized in that a discharge port 34a in a duct 34 of a heat shield 33 is formed to be inclined downward. According to this,
Since the cooling air is discharged slightly downward, there is an advantage that the cooling air hardly hits the user.

FIG. 10 shows a fourth embodiment of the present invention. In this embodiment, a duct 36 of a heat shield 35 is provided.
Is characterized in that a plurality of slits 36a are formed in a plurality of slits. According to this, since the discharge port 36a of the duct 36 is formed in a plurality of slits, it is possible to prevent the user from feeling uncomfortable. That is, the cooling air is discharged forward at a relatively high flow velocity without spreading so much because the discharge port 36a is constituted by a plurality of slits, and
At a portion away from the cooking device, the momentum is weakened and spreads. As a result, the cooling air does not diffuse in the vicinity of the heating cooker, and the user feels less discomfort. In addition, it is possible to prevent fingers from entering the duct 36 and also prevent insects such as cockroaches from entering.

FIG. 11 shows a fifth embodiment of the present invention. In this embodiment, the duct 38 of the heat shield 37 and the outer box 2 are used.
It is characterized in that the leg 37a is provided integrally with the side plate 2b. According to this embodiment, the duct 3
8 is configured to be kept away from the left side wall Sc of the recess S of the system kitchen, and thus it is possible to effectively prevent the left side wall Sc from becoming hot. In this case, the legs may be separate from the heat shield.

FIGS. 12 and 13 show a sixth embodiment of the present invention. In this embodiment, a heat shield 39 is used.
In addition, a feature is that a convex portion 40 protruding outward from the side plate portion 2b of the outer box 2 is formed. According to this embodiment,
The side wall portion Sc of the concave portion S and the side plate portion 2 of the outer case 2 are formed by the convex portion 40.
b can be secured, and the side wall Sc can be prevented from becoming hot. In addition, since the convex portion 40 is formed on the heat shield 37 without being formed on the outer box 2 of the cooking device main body 1, it is more effective. That is, if the convex portion 40 is temporarily attached to the outer box 2 of the cooker main body 1,
Is formed, the heat of the outer box 2 is directly transferred to the side wall Sc.
However, as in this embodiment, since the protrusions 40 are formed on the heat shield 39 having a lower temperature than the outer box 2, the heat transfer to the side wall Sc can be reduced. Adverse effects can be reduced. Particularly when the heat shield 39 is made of a synthetic resin, it is more effective.

FIG. 14 shows a seventh embodiment of the present invention. This embodiment is characterized in that a concave handle portion 42 is formed on the heat shield 41. In this embodiment, since the heat shield 41 is located at a position where the hand can be easily held, it is convenient to form the handle portion 42. That is, the heat shield 41 can be used for forming the handle portion 42, and the productivity is improved. Can be improved.

[0028]

As apparent from the above description, the present invention has the following effects. According to the first aspect of the present invention, the heat shield is provided so as to oppose the exhaust port of the outer box bottom plate at a position separated from the exhaust port and cover almost the entire area of the exhaust port. Without obstructing the exhausting action of the cooling air, the cooling air can be emitted from the exhaust port and applied to the heat shield, so that the hot cooling air does not hit the installation surface where the cooking device body is installed. In addition, it is possible to prevent the installation surface from being thermally deteriorated or soiled.

According to the second aspect of the present invention, since the heat shield is formed to have a duct for leading the cooling air flowing out of the exhaust port to the front, high-temperature air is provided at the rear portion and the left and right portions of the cooking device. Therefore, when a cooking device is installed in a system kitchen, for example, high-temperature cooling air does not hit the rear and left and right sides of the system kitchen. ing. According to the third aspect of the present invention, since the legs are formed integrally with the heat shield, the heat shield can be used for forming the legs, and the number of parts and the number of mounting steps can be reduced.

According to the fourth aspect of the present invention, the cross-sectional area of the discharge port portion of the duct is made larger than the cross-sectional areas of the other portions.
Exhaust efficiency can be improved, and heat can be dispersed. According to the fifth aspect of the present invention, since the outlet of the duct is formed to be inclined downward, the cooling air is discharged slightly downward, and there is an advantage that the cooling air hardly hits the user. According to the invention of claim 6, since the discharge port of the duct is formed in a plurality of slits, cooling air is not diffused in the vicinity of the cooking device, so that discomfort to the user can be reduced, and Fingers can be prevented from entering the duct, and insects can be prevented from entering.

According to the seventh aspect of the present invention, since the leg is provided between the duct of the heat shield and the outer box side plate, the side wall of the installation location exists on the side of the cooking device body. In such a case, the duct can be kept away from the side wall at the installation location, and thus it is possible to effectively prevent the side wall from becoming hot. According to the invention of claim 8, since the heat shield has the convex portion protruding outward from the outer box side plate portion, the convex portion is provided when the side wall portion of the installation location exists on the side of the cooker body. The gap between the side wall portion and the side plate portion of the outer box can be secured by the portion, and the side wall portion can be effectively prevented from becoming hot.

According to the ninth aspect of the present invention, the bottom portion of the outer box is provided with a synthetic resin leg, and the heat shield is formed of the same material as the leg. In addition, it is possible to reduce the likelihood of the cooker body being loosely mounted on the heat shield with uniform wear of the legs integrally formed with the heat shield. According to the tenth aspect of the present invention, since the handle is formed on the heat shield, the heat shield can be used for forming the handle, and the productivity can be improved.

According to the eleventh aspect of the present invention, a partition plate for forming a ventilation path is disposed between the outer case bottom plate and the inner case bottom plate, and the heat shield is formed of the outer case bottom plate. Because it is a configuration that covers the exhaust port side further than the part where this partition plate is located,
Exposure of a portion that tends to become high in temperature in the bottom plate portion of the outer box can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of the present invention.

FIG. 2 is an external perspective view.

FIG. 3 is a schematic longitudinal sectional front view.

FIG. 4 is a schematic longitudinal side view.

FIG. 5 is a longitudinal sectional front view of a leg portion.

FIG. 6 is a perspective view of a heat shield.

FIG. 7 is a perspective view of a heat shield showing a second embodiment of the present invention.

FIG. 8 is a perspective view of a heat shield showing a third embodiment of the present invention.

FIG. 9 is a longitudinal side view of the heat shield.

FIG. 10 is a perspective view of a heat shield showing a fourth embodiment of the present invention.

FIG. 11 is a vertical sectional front view of a heat shield showing a fifth embodiment of the present invention.

FIG. 12 is a vertical sectional front view of a heat shield showing a sixth embodiment of the present invention.

FIG. 13 is a perspective view of a heat shield.

FIG. 14 is a vertical sectional front view of a heat shield showing a seventh embodiment of the present invention.

[Explanation of symbols]

1 is a cooker body, 2 is an outer box, 3 is an inner box, 4 is a machine room, 5
Is a fan device, 6 is a fan motor, 7 is a fan, 11 is a partition plate, 12 is an exhaust port, 14 is a tubular heater (heat source), 1
5 is a sheet heater (heat source), 17 is a heat shield, 18 is a duct, 19 is a leg, 20 is a leg, 31 is a heat shield, 32 is a duct, 32a is a discharge port, 33 is a heat shield, 34 Is a duct, 3
4a is an outlet, 35 is a heat shield, 36 is a duct, 36a is an outlet, 37 is a heat shield, 38 is a duct, 39 is a heat shield,
Reference numeral 40 denotes a projection, 41 denotes a heat shield, and 42 denotes a handle.

Claims (11)

[Claims] 1. A cooker having an outer box and an inner box disposed inside the outer box with a space between the inner box and the inner box, wherein the inside of the inner box is a cooking chamber. A main body, a heat source for heating an object to be heated housed in the cooking chamber, and a cooling air generated by being disposed at a side portion of one side plate portion of the inner box to generate cooling air and to generate a cooling air around the inner box. Heating comprising: a fan device extending downwardly from an exhaust port of an outer box bottom plate through the heat exchanger; and a heat shield provided opposite to the exhaust port at a position separated from the exhaust port so as to cover substantially the entire area of the exhaust port. Cooking device. 2. The heating cooker according to claim 1, wherein the heat shield forms a duct for leading cooling air from the exhaust port to the front. 3. The heating cooker according to claim 1, wherein the heat shield has a leg formed integrally therewith. 4. The cooking device according to claim 2, wherein the cross-sectional area of the discharge port portion of the duct is larger than the cross-sectional area of the other portion of the duct. 5. The cooking device according to claim 2, wherein the outlet of the duct is formed to be inclined downward. 6. The cooking device according to claim 2, wherein the outlet of the duct is formed in a plurality of slits. 7. A leg portion is provided between the duct of the heat shield and the outer box side plate portion.
The described cooking device 8. The cooking device according to claim 2, wherein the heat shield has a convex portion protruding outward from the outer box side plate. 9. The cooking device according to claim 2, wherein a leg made of synthetic resin is provided on a bottom plate portion of the outer box, and the heat shield is made of the same material as the leg. vessel. 10. The cooking device according to claim 2, wherein a handle is formed on the heat shield. 11. Between the outer box bottom plate and the inner box bottom plate,
A partition plate for forming a ventilation path is provided, and the heat shield is configured to cover a portion of the outer box bottom plate portion further away from the portion where the partition plate is located, on the side opposite to the exhaust port. The heating cooker as described.