JPS6367102B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of a high frequency heating device such as a microwave oven.

Conventional configuration and its problems Cooking appliances such as microwave ovens are often placed near the cooking area in the kitchen, but due to housing conditions and the diversification of cooking-related appliances, the space for placing these cooking appliances has become limited. is subject to major restrictions.

Conventional heating cooking appliances such as microwave ovens are generally equipped with a heating chamber and an operating section to the right of the heating chamber.The operating section is located at the front of the electrical chamber that houses the high-frequency generator and other electrical components. There are knobs such as a timer for setting the heating time and a dial for setting the temperature in the heating chamber.

The reason why these operation parts are located on the right side of the main body is based on the assumption that the majority of users are usually right-handed, and does not take into account the arrangement of various appliances in the kitchen. In other words, depending on where these heating cookers are placed, the door that covers the front of the heating chamber may need to open to the left or the right, and depending on the opening/closing direction of the door, the operating section may also open to the left. In some cases, it may be easier to operate the device if it is on the left side, but in reality there is no such thing as a device with a left-hand control section. Even if the door opens from the front, the operating section is usually located on the right side.
A heating cooking appliance having such a configuration has the disadvantage that it is extremely difficult to operate depending on the location where it is placed, and also requires a large installation space.

Recently, some devices have been seen in which the operation section is placed at the top or bottom of the main body to alleviate the above-mentioned drawbacks. However, even in this case, the heating chamber is mainly constructed of a double-layer structure in which an external material is placed over the outside of the box. In other words, there is a certain amount of space between the heating chamber and the external material, and although it is used as a place for installing heat insulating materials, various mechanical parts, and connecting wires, this space makes it difficult for the main body to The drawback remains that the effective volume of the heating chamber is relatively small relative to the external dimensions.

When determining the external shape of the main unit due to installation space constraints,
If we can secure a heating chamber volume that is as large as its external dimensions, the capacity of the heated object will increase accordingly.
This will ultimately lead to a reduction in heating time.
Also, if a heating chamber with the same volume as a conventional heating chamber but without the above-mentioned voids could be created, it would have the advantage of helping to reduce the installation space.
The volume of the heating chamber is proportionally smaller, and when the volume of the heating chamber is used as a reference, the external shape of the main body becomes larger, which has the drawback of requiring a larger installation area.

Furthermore, the more it is attempted to serve both the exterior plate and the heating chamber, the more important the problem becomes as to how to provide the waveguide. In particular, when an electrical room is installed above or below the heating chamber to store electrical components, taking installation space into account, the waveguide is placed near the center of the side wall of the heating chamber to prevent uneven heating. It was considered to be installed externally and feed high-frequency power from the back plate.
However, there was a drawback that the installation space became even larger due to the protruding waveguide.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, makes the operation part easy to operate regardless of where the appliance is placed, and has an extremely small external dimension compared to the size of the heating chamber, reducing the installation area. The purpose of the present invention is to provide a configuration of a high-frequency heating device.

Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention has an upper surface and left and right side surfaces of the heating device main body that are approximately U.
an exterior plate formed of a single plate in a character shape; a side wall of a heating chamber within the exterior plate whose bottom and left and right sides are formed of a single plate in a substantially U-shape; a back plate; and an object to be heated. A front plate having an opening for loading and unloading, both end surfaces of the side walls of the heating chamber are fixed to the inner surface of the upper plate of the exterior plate, and a high frequency wave is transmitted into the heating chamber in a space outside the heating chamber and formed by the exterior plate. This configuration has a waveguide that guides the heating chamber, and has the effect that the front and rear external dimensions can be made extremely small compared to the size of the heating chamber, and the installation area can be made small.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a housing portion of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the device. 1 is a front plate, 2 is a back plate, and 3 is an exterior plate, which includes a top surface 3a, a left side surface 3b, and a right side surface 3.
A side wall 4 of the heating chamber 5 is provided inside the exterior plate 3, and the upper surface of the side wall 4 of the heating chamber 5 is the same as that of the exterior plate 3. Side 3
The left side wall 4a, the bottom surface 4b, and the right side surface 4c are formed into a substantially U-shape by a single metal plate, and the horizontal surface of the bottom surface 4b is the opening lower end 1a of the front plate 1 of the heating chamber.
are fixed on substantially the same surface.

Above the bottom surface 4b is a heating chamber 5, and below it is an electrical chamber 6 for storing electrical components.

The heating chamber right side wall 4c of the heating chamber 5 has an opening 8 for guiding the high frequency wave guided by the waveguide 7 into the heating chamber 5.

In FIG. 2, the waveguide 7 is connected to the lower electrical chamber 6.
The waveguide 7 has a hole in the lower part thereof into which the antenna section of the magnetron 9 is inserted.
The antenna part of the magnetron 9 is inserted into the hole and fixed with screws or the like.

Electrical control parts and the like are attached to the floor plate 10 of the main body of the apparatus, and are fixed so as to be housed in the electrical room 6 through the opening at the bottom of the inverted U-shape of the exterior plate 3.

In FIG. 2, reference numeral 11 denotes a tray for placing an object to be heated, and is rotated by a motor 13. As shown in FIG.

In FIG. 3, 13 is a cover for the opening 8 of the waveguide 7, and is made of a low dielectric loss material.

14 shows a heating time setting timer as an example of the arrangement of operating parts.

According to the embodiment configured as above, the heating chamber 5
The bottom surface of the bottom surface is horizontally substantially flush with the opening lower end 1a of the front plate 1, making it easy to clean and easy to take out and put in the saucer 12, and also serves as the top surface of the heating chamber 5 and the top surface 3a of the exterior plate 3. This allows the effective volume of the heating chamber 5 to be large compared to the external dimensions, and by arranging various electrical components at the bottom, the center of gravity of the main body is located downward, allowing for stable installation despite its light weight. I can do it.

Furthermore, since the waveguide does not protrude outside the product, the front and rear dimensions of the product can be reduced, which has the effect of reducing the installation area.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) The operation section is located at the bottom of the main body so that it can be easily operated regardless of where the main body is placed.

(2) The outside of the top and back surfaces of the heating chamber is the exterior of the main body, there are no extra voids, there are no other components, and the height of the main body is relatively and substantially low;
Effective use of installation space at locations can be achieved.

(3) Since the top surface of the heating chamber also serves as the top surface of the exterior plate,
The weight can be reduced accordingly, and the material cost can also be reduced accordingly.

(4) Right side 3c of exterior plate 3 and right side 4 of heating chamber 5
By making good use of the space between C and C, an exhaust labyrinth section can be provided, and the front and rear dimensions of the product can be made smaller than when installing an exhaust cover on the outside of the device body as in the past, allowing for effective use of installation space in the kitchen. I can figure it out.

(5) Electrical components are placed all at once on the floor plate of the main unit and stored in the electrical room on the exterior board, and most of the work can be done before assembling the parts and storing the wiring.
In addition to being easy to assemble, the center of gravity of the entire device is located at the bottom, allowing for extremely stable installation.

(6) Since the lower end of the front plate opening and the horizontal plane of the bottom of the heating chamber are approximately on the same plane, it is easy to put in and take out objects to be heated and the saucer, and the inside of the heating chamber can be cleaned very easily. can.

(7) Since the waveguide is housed in the space between the side wall of the heating chamber and the side of the exterior plate, it does not protrude to the outside, so the front and rear dimensions of the product can be reduced, reducing the installation space. can be made smaller, contributing to the effective use of space in a narrow kitchen.

(8) Since the waveguide is housed in the space between the side wall of the heating chamber and the side of the exterior plate, it does not protrude to the outside, so the front and rear dimensions of the product can be reduced, increasing the demand for the product. This allows the packaging to be delivered to homes to be smaller, and greatly contributes to reducing packaging costs and transportation costs.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the exterior plate, heating chamber plate, etc. of a high-frequency heating device according to an embodiment of the present invention, FIG.
FIG. 3 is a cross-sectional view taken along line BB' of the main body of the heating device in FIG. 1. 1... Front plate, 2... Back plate, 3... Exterior plate, 4...
...Heating chamber side wall, 5...Heating chamber, 6...Electric room, 7
... Liquid guide pipe, 8 ... Opening of waveguide 7 on the right side wall of the heating chamber, 9 ... Magnetron, 10 ... Floor plate, 11
... saucer, 12 ... motor, 13 ... opening cover, 14 ... timer.

Claims (1)

[Claims] 1. An exterior plate in which the top surface and left and right sides of the heating device body are formed from a single plate in a substantially U-shape, and a heating chamber located within the exterior plate and in which the bottom surface and left and right sides are formed in a substantially U-shape from a single plate. a side wall of the heating chamber, a back plate, and a front plate having an opening for taking in and taking out the heated material, and both end surfaces of the heating chamber side wall are fixed to the inner surface of the upper plate of the exterior plate, and the exterior is located outside the heating chamber. A high-frequency heating device configured to provide a waveguide that guides high-frequency waves into a heating chamber in a space formed by a plate.