JPS6367612B2 - - 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 setting 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.

In addition, a structure in which the exterior plate and the heating chamber are made of the same material to increase the heating chamber volume is also available in Japanese Patent Application No. 58-75780.
If the operation panel and power supply parts were placed at the bottom using the method shown in No. 2, there would be no place to install the interior light, and from the bottom of the heating chamber, it would not be possible to illuminate the objects to be heated, so we had no choice but to install the interior light on the back plate. A cover was also placed over the interior light to ensure the safety of the user. In this case, if the cover was small, the heat from the interior light would shorten its lifespan, so the cover would have to be large to a certain extent, and the front and rear dimensions of the product would become large, moving away from the idea of reducing the installation area.

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

Structure of the Invention In order to achieve the above-mentioned object, the high frequency heating device of the present invention has a substantially U
The side wall of the shaped heating chamber is fixed, and the internal lighting is installed between the double U-shaped space between the inside and outside.Since it does not protrude outside the back plate, the front and rear dimensions of the product can be reduced, making it easier to install. This has the effect of reducing the area and eliminating the need for a safety cover for the user since there is an exterior plate, thereby reducing costs.

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 FIGS. 2 and 3 each show a cross section of the device. 1 is a front plate, 2 is a back plate, 3 is an exterior plate, which includes a top surface 3a, a left side surface 3b,
The right side surface 3c is formed from one metal plate into a substantially U-shape, and the 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 formed of an exterior plate. It also serves as the top surface 3a of 3, the left side wall 4a, and the bottom surface 4.
(b) The right side wall 4c is formed of a single metal plate into a substantially U-shape, and the horizontal surface of the bottom surface 4b is fixed substantially flush with the opening lower end 1a of the front plate 1 of the heating chamber.

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

In FIG. 2, there is a punched hole 8 in the right side wall 4c of the heating chamber 5 that guides the light from the internal lamp 7 into the heating chamber 5, and the holes are provided in a diameter, pitch, and number to prevent high frequency leakage. A heat-resistant, translucent thin film 9 is placed on the outside of the heating chamber 5 to prevent the exhaust gas from flowing out of the heating chamber 5 and to prevent objects to be heated from flying off and adhering to the interior light 7 and reducing the illumination effect. It's pasted. The interior light 7 is fixed to a metal fitting 10 on the outside of the right side wall 4c of the heating chamber 5. In addition, an opening 11 is provided on the right side surface 3c of the exterior plate 3, and an inspection window 11 is provided for installation and removal of the interior light 7, lamp replacement, and wiring work during assembly and service.
2 is attached with screw 13.

In FIG. 3, the floor plate 14 of the main body of the device includes:
Electrical control parts and the like are attached and fixed in such a way that they are housed in the electrical chamber 6 through the opening at the bottom of the inverted U-shape of the exterior plate 3.

Note that 15 is a tray for placing the object to be heated, and is rotated by a motor 16. 17 shows a heating time setting timer as an example of the arrangement of operating parts.

As described above, according to the configuration of the present invention, the heating chamber 5
The bottom surface of the front plate 1 is horizontally substantially flush with the opening lower end 1a of the front plate 1, making it easy to clean, easy to take in and take out the saucer 15, and convenient to use. Since it also serves as Can be installed and installed. In addition, by installing the interior lighting between the double U-shape inside and outside, the space can be used effectively, and since it does not protrude to the outside of the back plate, the front and rear dimensions of the product can be reduced. This has the effect of reducing the installation area and eliminating the need for a safety cover for the user since there is an exterior plate, thereby reducing costs.

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 outside the main body, with no extra air space and no other components.
The height of the main body can be made relatively and practically low, and the installation space in the kitchen can be used effectively.

(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
It is possible to provide an internal light by making good use of the space between c and c, and the front and rear dimensions of the product can be made smaller than when a safety cover is provided outside the main body of the device as in the past, and the installation space in the kitchen can be used effectively.

(5) Electrical components are placed all at once on the floor of the main unit and stored in the electrical room on the exterior board, making it easier to assemble as most of the work can be done before storing the parts assembly and wiring. As a result, the center of gravity of the entire device is located downward, allowing 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 interior light is not provided externally but is provided inside the exterior panel, these parts are not required and can contribute to cost reduction.

(8) Since the opening in the exterior plate is large enough to cover the interior light, it is very easy to install and wire the interior light to the main body, as well as to remove, install, and inspect the interior light during service. It is.

[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. 2 is a cross-sectional view taken along the line B-B' in Fig. 1, and Fig. 3 is a It is a longitudinal cross-sectional view taken along the line AA' in the figure. 1... Front plate, 2... Back plate, 3... Exterior plate, 4...
...Heating chamber side wall, 5...Heating chamber, 6...Electric room, 7
...Interior light, 8...Punching hole, 9...Translucent thin film, 10...Metal fittings, 11...Opening, 12...Inspection window, 13...Screw, 14...Floor area, 15...
saucer, 16... motor, 17... timer.

Claims (1)

[Scope of Claims] 1. An exterior plate formed of a single plate having a substantially U-shape on the top surface and left and right side surfaces of the heating device body, and a single plate located inside the exterior and having a substantially U-shape on the bottom surface and left and right sides. The side wall of the heating chamber formed by and the back plate of the heating device main body,
a heating chamber formed by fixing a heating chamber side wall to an upper surface of an exterior plate and fixing a back plate and a front plate of the heating device body thereto; The bottom plate of the heating device body is fixed to both ends of the approximately U-shaped exterior plate of the heating device body, the electrical room that stores the electrical components of the high-frequency generator, and the storage area that illuminates the progress of the heated items. An electric chamber and an interior light are provided in a space outside the heating chamber and formed by an exterior plate and a bottom plate of the heating device main body, and an electric chamber and an interior light are provided to make the interior easily visible. High frequency heating equipment. 2. The high-frequency heating device according to claim 1, wherein a punching hole is provided in the side wall of the heating chamber facing the internal light, and an inspection window is provided in the exterior plate facing the internal light.