JP2002257347A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooker in which uneven heating is improved. SOLUTION: At two points on the wall surface in the heating chamber 3 facing a heater 6, protrusions 10 are provided in order to space an angular pan 8 and the wall surface of the heating chamber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device such as a microwave oven.

[0002]

2. Description of the Related Art As a microwave oven which is a conventional cooking device, a peripheral portion of a square plate placed in a heating chamber is in contact with a wall surface of the heating chamber facing the heater. Further, in order to send hot air into the heating chamber, a wind direction plate perpendicular to the heater case was provided in the heater case. Also, a fan is provided on the back of the heating chamber to circulate hot air,
A wind direction plate was welded to the heater case covering the fan.

[0003]

In such a cooking device, the peripheral edge of the square plate directly contacts the wall surface in the heating chamber, so that the heat of the heater is easily transmitted to the portion of the square plate near the heater. This caused heating unevenness. Also,
Although a wind direction plate was provided in the heater case, it was difficult to uniformly heat the food because hot air was not reliably transmitted to the front of the heating chamber. Also, welding the wind direction plates to the heater case one by one was a major problem in terms of manufacturing cost. Further, since it is necessary to secure a certain amount of air flow from the fan, the fan cannot be downsized, and the cooker body cannot be downsized.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a cooker in which unevenness in the heating of food is improved, the assembling work is made more efficient, and the main body is made smaller. is there.

[0005]

According to the present invention, there is provided a cooker comprising: an exterior; a heating chamber provided in the exterior to store food;
In a cooker that includes a heating unit that generates hot air for heating the food, a fan that circulates the hot air, and a plate on which the food is placed, the heating chamber is formed on a wall surface facing the heating unit. A protruding portion which is in contact with a peripheral portion of the plate and separates the plate from the wall surface so as to suppress conduction of heat of the heating means to the plate via the wall surface.

[0006] Further, an exterior, a heating chamber provided in the exterior and containing food, a heating means for generating hot air for heating the food, a fan for circulating the hot air, and a fan are provided near the fan. In a cooker provided with a wind direction plate and a plate on which the food is placed, a bending process in a direction opposite to the wind direction by the fan was performed on an end of the wind direction plate facing the heating chamber.

[0007] Further, an exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a fan for covering the fan are provided. In the cooker provided with the provided case and the plate on which the food is placed, a partition plate for suppressing the hot air from flowing backward from the fan is provided on the back surface of the fan.

[0008] An exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a cover for covering the fan are provided. In a cooker provided with a case, a wind direction plate provided near the fan, and for directing the hot air toward the heating chamber, and a plate on which the food is placed, the wind direction plate is swaged to the case. did.

The heating means is supported by the wind direction plate.

[0010] Also, an exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a fan for covering the fan are provided. And a cooker provided near the fan and provided with a wind direction plate for directing the hot air toward the heating chamber, and a plate on which the food is placed. It is continuously in contact from the main surface to the side surface.

[0011] Further, a hole portion for allowing the hot air to pass therethrough is provided on the entire periphery of the plate.

As described above, the cooking device according to the present invention can provide a cooking device in which uneven heating of food is improved, the assembling work is simplified, and the size of the product is reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

In the drawing, 1 is a microwave oven main body, 2
Is an exterior of the main body 1, 3 is a heating chamber provided in the exterior 2, 4
Is a door for opening and closing the front opening of the heating chamber 3, and 5 is a heating chamber 3
, A heater (heating means) disposed on the back of the heating chamber 3 to generate hot air, 7 a fan for circulating the hot air from the heater 6, and 8 a square plate (plate) on which the food 5 is placed. ). The square dishes 8 are provided in the heating chamber 3 in two stages vertically. Reference numeral 9 denotes a hole provided on the entire periphery of the square plate 8. Reference numeral 10 denotes a convex protrusion provided at two places on the wall surface facing the heater 6 in the heating chamber 3 so as to separate the square plate 8 from the wall surface of the heating chamber 3. This projection 1
0, the square plate 8 does not touch the rear wall of the heating chamber 3.

Reference numeral 11 denotes a disk-shaped partition plate provided integrally with the fan 7 on the back surface of the fan 7 and having substantially the same size as the fan 7. The partition plate 11 is provided so that hot air stirred by the fan 7 does not go to the rear of the fan 7. Reference numeral 12 denotes a heater case provided so as to cover the heater 6. Reference numeral 13 denotes a wind direction plate that supports the heater 6 and directs the hot air heated by the heater 6 toward the heating chamber 3. 13A is heater case 1
2 is provided near the center of the right end, and the tip on the heating chamber 3 side is
The bent wind direction plate is bent in a direction opposite to the wind direction by the fan 7. The hot air agitated by the fan 7 is directed toward the front side of the heating chamber 3 by the bent wind direction plate 13A.

Reference numeral 13B denotes a wind direction plate 13 for the heater case 12.
And a caulking portion for caulking the bending wind direction plate 13A. By the press by the caulking machine, the wind direction plate 13 and the bending wind direction plate 13A
B is fixed by caulking. FIG. 10 shows a state in which the wind direction plate 13 is caulked to the heater case 12.
13C is a contact surface which is provided on the wind direction plate 13 and which substantially continuously contacts from the main surface to the side surface of the heater case 12. With the swaged portion 13B provided on the contact surface 13C,
A wind direction plate 13 is caulked to the heater case 12.

Reference numeral 14 denotes an intake hole provided substantially at the center of the inner wall surface in the heating chamber 3. Hot air circulating in the heating chamber 3 is sucked in through the suction holes 14. Reference numeral 15 denotes an exhaust hole provided in the heating chamber 3 for sending hot air sucked through the suction hole 14 into the heating chamber 3. 15A
Reference numeral denotes an exhaust hole provided at a position substantially opposed to the bent wind direction plate 13A provided near the center of the right end of the heater case 12. The exhaust hole 15 </ b> A is located substantially at the center between the upper and lower two-stage square dishes 8 provided in the heating chamber 3.

The air in the heating chamber 3 is sucked in through the intake hole 14, and the air is directed to the heater 6 by the rotation of the fan 7. The air (hot air) heated by the heater 6 is directed toward the heating chamber 3 by the wind direction plate 13, and is discharged through the exhaust hole 15 and the exhaust hole 15 A.
It is sent into the heating chamber 3.

The hot air heated by the heater 6 is circulated in the heating chamber 3 by the fan 7 to heat the food 5 placed on the square plate 8. The hot air passes through the holes 9 provided on the entire circumference of the square plate 8, and thereby the heating chamber 3
Can be circulated throughout. Thereby, the food 5 placed on the square plate 8 can be heated substantially uniformly, and uneven heating of the food 5 can be suppressed. In particular, the provision of the holes 9 makes it easier for hot air to spread to the square plate 8 provided in the lower section of the heating chamber 3, and can improve uneven heating of the food 5.

When the square plate 8 and the inner wall surface of the heating chamber 3 are separated from each other at the two points of the convex projection 10, the heater 6
Can be prevented from being transmitted to only the portion of the square dish 8 close to the heater 6 on the wall surface of the heating chamber 3 facing the heater 6. Thereby, uneven heating of the food 5 placed on the square plate 8 can be prevented. Further, a space is formed between the square plate 8 and the wall surface of the heating chamber 3, and hot air can pass through this space, so that the hot air in the heating chamber 3 can be smoothly circulated.

In a conventional wind direction plate provided perpendicular to the wind direction, the hot air tends to flow in the direction indicated by the dotted arrow in FIG. 7, and the hot air is not smoothly exhausted from the exhaust hole. However, the hot air is directed in a direction substantially perpendicular to the heater case 12 by the bent wind direction plate 13A bent in the direction opposite to the wind direction by the fan 7, as shown by the solid arrow in FIG. As a result, hot air
Exhaust hole 15 at a position substantially facing bending wind direction plate 13A
Through A, the air is more reliably exhausted into the heating chamber 3 between the upper square dish 8 and the lower square dish 8, and the hot air can be more effectively distributed to the lower square dish 8. It should be noted that hot air can be sent into the heating chamber 3 more effectively by replacing the air flow direction plate 13 disposed at other positions with the bent air flow direction plate 13A.

Since the wind direction plate 13 and the bent direction plate 13A are caulked to the heater case 12, a complicated welding process as in the related art can be omitted. Also, by attaching a plurality of wind direction plates 13 to the heater 6 and caulking the heater case 12, it is possible to attach a plurality of wind direction plates 13 to the heater case 12 at one time. Thereby, the assembling and manufacturing process of the microwave oven can be greatly simplified, and the cost can be reduced.

The partition plate 11 integrally provided on the back surface of the fan 7 prevents the air stirred by the fan 7 from going to the rear of the fan 7. Thus, the amount of air blown by the fan 7 toward the heating chamber 3 can be increased, and the size of the fan 7 can be reduced while maintaining the amount of air as compared with the case where the partition plate 11 is not provided.
By reducing the size of the fan 7, the size of the main body 1 can be reduced.

By providing the continuous contact surface 13C on the wind direction plate 13, the strength of the wind direction plate 13 supporting the heater 6 can be improved.

[0025]

According to the present invention, it is possible to provide a cooker in which unevenness in heating of food is improved, the assembling work is simplified, and the size of the product is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a microwave oven according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of the microwave oven.

FIG. 3 is a side sectional view of the microwave oven.

FIG. 4 is a front view of the microwave oven with a door open.

FIG. 5 is an exploded perspective view of the vicinity of a fan of the microwave oven.

FIG. 6 is a front view of the vicinity of the fan of the microwave oven.

FIG. 7 is a sectional view taken along line AA ′ in FIG. 6;

FIG. 8 is a sectional view of a wind direction plate of the microwave oven.

FIG. 9 is a perspective view of a wind direction plate of the microwave oven.

FIG. 10 is a cross-sectional view of a caulking connection portion of a wind direction plate of the microwave oven.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microwave oven main body 2 Exterior 3 Heating chamber 4 Door 5 Food 6 Heater 7 Fan 8 Square plate 9 Hole part 10 Projection part 11 Partition plate 12 Heater case 13 Winding board 13A Bending windboard 13B Caulking part 13C Contact surface 14 Intake hole 15, 15A Exhaust hole

Claims (7)

[The claims] 1. An exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a plate on which the food is placed In the cooking device provided with, the heating chamber, formed on the wall surface facing the heating means, in contact with the peripheral edge of the plate, heat of the heating means is transmitted to the plate through the wall surface A cooking device provided with a protrusion for separating the plate from the wall surface so as to suppress the occurrence of the plate. 2. An exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a fan provided near the fan. In a cooker provided with a wind direction plate and a plate on which the food is placed, a cooking device characterized in that a bending process in a direction opposite to a wind direction by the fan is performed on an end of the wind direction plate on a heating chamber side. . 3. An exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a cover for covering the fan. A cooking device provided with a case and a plate on which the food is placed, wherein a partition plate that suppresses the hot air from flowing backward from the fan is provided on a back surface of the fan. vessel. 4. An exterior, a heating chamber provided in the exterior and containing food, heating means for producing hot air for heating the food, a fan for circulating the hot air, and a cover for covering the fan. And a cooker provided near the fan and provided with a wind direction plate that directs the hot air toward the heating chamber, and a plate on which the food is placed. A cooker characterized by being caulked. 5. The cooker according to claim 4, wherein said heating means is supported by said wind direction plate. 6. An exterior, a heating chamber provided in the exterior and containing food, heating means for generating hot air for heating the food, a fan for circulating the hot air, and a cover for covering the fan. And a cooker provided near the fan and provided with a wind direction plate for directing the hot air toward the heating chamber, and a plate on which the food is placed. A cooking device characterized by being continuously in contact from the main surface to the side surface. 7. The cooker according to claim 1, wherein a hole for passing the hot air is provided on the entire periphery of the plate.