JPS61143623A - High frequency heating device - Google Patents

Abstract

PURPOSE:To permit to heat in good efficiency and economically by a method wherein a heating device and a fan are provided on the upper part of a heating chamber and suction and discharge ports are provided on the ceiling of the heating chamber to separate the heating device and the heating chamber while a loading tray is provided removably on the position so as to separate the inside of the heating chamber to the upper and lower side. CONSTITUTION:A magnetron 6 is arranged to the side wall of the heating chamber 2, a heater 5 for hot air circulation and a fan 7 are fitted to the heating device housing 8 at the upper part of the heating chamber 2, the suction hole part A is provided on the circumference of ceiling surface plate 11 and the discharge hole part B is provided on the center thereof while the heating chamber 2 and the heating device are constituted so as to be separated. Projections 12a, 12b are provided at the right and left both wall of the heating chamber 2 and the loading tray 13 is constituted so as to be able to support removably. According to this constitution, the heating chamber 2 having a small capacity is arranged on the upper part of the heating chamber 2 due to putting the loading tray 13 into the heating chamber 2, the hot air circulated from the suction and discharge hole unit A, B are circulated by the half or less capacity than upon normal oven heating, therefore, the high temperature hot air is applied to food 3 directly while the heating may be effected in good efficiency and economically.

Description

[Detailed Description of the Invention] The present invention for industrial use is a high-frequency heating device equipped with a hot air circulation heating device, and provides high-temperature baking and browning in an efficient and inexpensive configuration. The present invention relates to a high-frequency heating device that can provide high-frequency heating.

Conventional technology In general, when attempting to achieve high-temperature baking and browning cooking (hereinafter referred to as grill cooking) in a cooking device (ζ) that combines a high-frequency heating device and a hot air circulation device, the fifth
As shown in the figure, a method is generally used in which a grill heater 1 is installed in a heating chamber 2 and food 3 is heated by radiant heat. In this case, the food 3 is placed near the grill heater 1 using a rack 4 or the like.

Problems to be Solved by the Invention However, in such a conventional example, in order to heat the food 3 using radiant heat, it is necessary to arrange the grill heater 1 exclusively for grilling in the heating chamber 2. The grill heater 1 becomes protruded and the effective volume inside the heating chamber 2 becomes smaller. In addition, the ceiling inside the heating chamber 2 is the most dirty place as dirt such as oil scatters, but the ceiling inside the grill heater 1
Cleaning is extremely difficult due to the location of the In addition, the method of arranging the food 3 near the grill heater 1 using the rack 4 or the like has poor thermal efficiency and requires the grill heater 1 to be constantly energized during cooking, which is uneconomical.

Further, there are problems such as the grill heater 1 being required in addition to the hot air circulation heater 5, resulting in high cost. Conventionally, stains on the ceiling inside the heating chamber 2 have been dealt with by applying a wave antinode such as self-cleaning using an oxidation catalyst to the ceiling inside the heating chamber 2, but this has resulted in high costs.

The present invention solves these conventional problems, and provides a high-frequency heating device with a simple configuration and a hot air circulation heating device, which can provide grill cooking efficiently and at low cost. It provides:

Means for Solving the Problems The high-frequency heating device of the present invention includes a high-frequency generator that radiates high-frequency waves into a heating chamber, a heating device that increases the ambient temperature within the heating chamber, and a fan that circulates the atmosphere within the heating chamber. The heating chamber is equipped with an intake/exhaust port for hot air in the heating chamber, a mounting plate for placing the object to be heated, and a protrusion for holding the mounting plate on the heating chamber wall, and a heating device and a fan are installed in the upper part of the heating chamber. The heating device is separated from the heating chamber by providing intake and exhaust ports on the ceiling of the heating chamber, and a mounting plate is removably installed at the position that partitions the heating chamber into an upper and lower part. The configuration is such that the volume is less than half of the total volume of the heating chamber, and the mounting plate is sized to partition the hot air blown from the top of the heating chamber into the upper part of the heating chamber, and the four corners of the mounting plate are cut out to allow some of the hot air to flow out. It is configured so that it can be placed into a lower heating chamber partitioned off by a mounting plate through cutouts at the four corners.

Function: The high-frequency heating device of the present invention is provided with a heating device and a fan in the upper part of the heating chamber, an intake/exhaust port provided in the ceiling of the heating chamber to partition the heating device and the heating chamber, and mounted at a position that partitions the inside of the heating chamber into upper and lower parts. By making the placement plate removable, it can be used for high-frequency heating when the above-mentioned placement plate is not used, or for hot-air oven heating using a rack etc., and the above-mentioned placement plate can be attached to the heating chamber wall When inserted and supported by the projections provided on the heating chamber, the internal volume of the heating chamber is divided by the mounting plate into less than half of the total volume of the heating chamber, and the hot air circulated from the air intake and exhaust ports on the ceiling of the heating chamber is
By circulating the food in a volume that is less than half that of normal oven heating, it is possible to reach high temperatures in a short time, and the distance between the food on the food tray and the intake and exhaust ports installed on the ceiling of the heating chamber is kept close. This allows food to be cooked at high temperatures by being exposed to high-temperature hot air directly. The mounting plate has a shape with cutouts at the four corners, and a portion of the hot air is allowed to enter the lower heating chamber partitioned by the mounting plate through the cutouts at the four corners. Part of the heating can be done from the bottom, and the entire mounting plate can be heated efficiently.
By heating the lower half of the heating chamber wall surface to a certain extent without heating only the upper half of the heating chamber wall surface to a certain extent, it is possible to prevent the influence of thermal distortion due to heating of the extreme portion of the heating chamber wall surface. With this configuration, the ceiling of the heating chamber has no protrusions and is easy to clean.
Since the internal volume of the heating chamber is reduced to less than half by the mounting plate and hot air is circulated within the small volume, it is possible to reach a high temperature in a short period of time, and it is economical because it can heat efficiently.

EXAMPLE Hereinafter, a high frequency heating device according to an example of the present invention will be explained with reference to the drawings. As shown in FIG. 1, a magnetron 6 is placed on the side wall of the heating chamber 2, a hot air circulation heater 5 and a fan 7 are attached to the heating device storage box 8 at the top of the heating chamber 2, and the top is covered with a heat insulating box 9. A motor 1o for driving the fan 7 is provided on a heat insulating box 9. The top plate 11 of the heating chamber 2 is provided with an intake hole A around the periphery and an exhaust hole B in the center to partition the heating chamber 2 and the heating device. Protrusions 12 & 12b are provided on both the left and right walls of the heating chamber 2, so that the mounting plate 13 can be detachably supported. Protrusion 12a.1? The position b is provided at a position above 1/2 of the height inside the heating chamber 2. As shown in FIGS. 2 and 3, the mounting tray 13 has notches E at the four corners.
. shall be. Ribs J are formed on the placing plate 13 to prevent the food 3 from coming into contact with oil, juice, etc. generated from the food 3.

In this way, by inserting the mounting plate 1a into the heating chamber 2, a small volume heating chamber 2 is created in the upper part of the heating chamber 2.
The hot air circulated through the air intake and exhaust holes A and B of the top plate 11 of the heating chamber 2 is circulated within a volume that is less than half that of normal oven heating, and reaches a high temperature in a short period of time, and the food 3 on the placing plate 11 and The intake/exhaust holes A and B provided in the top plate 11 are close to each other, and the food 3 is directly exposed to high-temperature hot air and can be heated efficiently and economically. Since the mounting plate 13 has cutouts E* Fs G* H at the four corners, gaps are created at the four corners between the heating chamber 2 wall and the mounting plate 13 as ventilation holes, and some of the hot air Cutouts E and F at the four corners.

It can also be sent to the lower part of the heating chamber 2 partitioned by the mounting plate 13 from the G and H parts, and a part of the heating chamber 2 can also be heated from the lower part of the mounting plate 13, so that the entire mounting plate 13 can be heated efficiently. can do.

In addition, the upper half of the wall surface of the heating chamber 2 is not heated locally, but the lower half is also heated to some extent, which prevents the influence of thermal distortion caused by heating the extreme portion of the wall surface of the heating chamber 2. This is effective in preventing overall deterioration. Further, due to the above-described configuration, there is no protrusion on the top plate 11 of the heating chamber 2.
It is advantageous because it is easy to clean and can be provided at low cost.

In addition, as shown in FIG. 4, the mounting plate 13 may have a shape with large radii at the four corners, and the same effect can be obtained.

This is more desirable when processing the mounting plate 1a.

Effects of the Invention As described above, the high frequency heating device of the present invention has a hot air circulation device installed above the heating chamber, circulates hot air from the top surface of the heating chamber,
The heating chamber is divided into upper and lower parts by a removable mounting plate, and a small volume heating chamber is formed in the upper part, and notches are provided at the four corners of the mounting plate.
The structure is such that a portion of the hot air is sent from the corner to the bottom of the heating chamber. Therefore, high-temperature heating can be easily obtained without installing a dedicated heater in the heating chamber, making it more efficient and economical than conventional methods. can be heated. Furthermore, the ceiling of the heating chamber has no protrusions and is easy to clean, which is extremely advantageous in practical terms, and it can be provided at a low cost.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the configuration of a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is an external perspective view of a mounting tray of the same device, and FIG.
FIG. 4 is a perspective view of a mounting plate as another embodiment, and FIG. 5 is a cross-sectional view of a conventional high-frequency heating device. 1... Grill heater, 2... Heating chamber, 3... Food, 4... Rack, 5...
...Hot air circulation heater, 6...Magnetron, 7...Fan, 8...Heating device storage box, 9...Insulation box, 10 ...Motor, 11...-Top plate, ? 2a・12b・・−
...Protrusion, 13...Placement plate. Name of agent: Patent attorney Toshio Nakao and one other person IK
Figure 3 13- Mounting plate E Figure 4

Claims (2)

[Claims] (1) A heating chamber in which food is stored and cooked once;
A high-frequency generator that emits high-frequency waves into the heating chamber, a heating device that increases the ambient temperature within the heating chamber, a fan that circulates the atmosphere within the heating chamber, an intake/exhaust port for hot air within the heating chamber, and an object to be heated. A mounting plate on which the heating chamber is placed and a protrusion for holding the mounting plate are provided on the wall surface of the heating chamber, the heating device and the fan are provided in the upper part of the heating chamber, and the air intake and exhaust ports are provided on the ceiling of the heating chamber. is provided to partition the heating device and the heating chamber, and a mounting plate is removably provided at a position that partitions the heating chamber into an upper and lower part, and the upper internal volume of the heating chamber partitioned by the heating chamber is heated. A high-frequency heating device configured to occupy less than half of the total indoor volume. (2) The mounting plate is sized to partition the hot air blown from the top of the heating chamber into the upper part of the heating chamber, and the four corners of the above-mentioned mounting plate are cut out, so that some of the hot air is directed past the notches at the four corners. The high-frequency heating device according to claim 1, which is configured to be placed in a lower heating chamber partitioned by a storage plate.