JPH0317135Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a microwave oven, and particularly relates to the shape of a heating chamber and the arrangement of parts related to the heating chamber.

<Prior Art> The heating box of a conventional microwave oven has a rectangular parallelepiped shape as shown in FIG. A magnetron (not shown) was attached to the side. Furthermore, an interior lighting hole 3 was provided on the side surface, and an interior light (not shown) was attached to the outside of the hole 3. Therefore, the external dimensions of a cabinet (not shown) disposed outside the heating box 1 inevitably become large, which is disadvantageous in terms of product cost and installation space. Another drawback was that the back left and right corners of the heating chamber were difficult to clean.

<Purpose> The present invention was made in view of the above points, and the corner portion extending between the left and right side walls and the back wall of the heating chamber is bent inward, and an internal light, waveguide, etc. is installed outside the corner portion. By arranging the heating chamber related parts, the purpose is to reduce the external dimensions of the product, reduce product cost and installation space.

<Example> Hereinafter, an example of the microwave oven of the present invention will be described based on the drawings.

Fig. 1 is an external perspective view of the heating box assembly of the present invention as seen from the back side, and Fig. 2 is an exploded perspective view of the heating box of the present invention. The body plate is formed by curving the and back wall into an arc shape, and the entire peripheral edge is bent outward to provide a flange 5a, an interior lighting hole 5b, and a power supply hole for supplying microwaves to the heating chamber. 5c is drilled. 6 is a rectangular top plate,
The front end is bent outward to form a collar 6a. 7
It is a rectangular bottom plate with a flange 7a formed at the front end, and a hole 7b through which a lead wire for an interior light is inserted and a hole 7c through which a magnetron antenna is inserted are bored in the rear corner. Reference numeral 8 denotes a rear plate having both ends bent so as to match the outer surface of the body plate 5, and although not shown, it is preferable to bend the same ends outward and provide a collar as appropriate.

When the flanges of each of the above parts are joined by spot welding or caulking as shown in FIG.
and an internal light storage chamber 10 are formed, and a hole 7 in the bottom plate 7 is formed.
A compact heating box assembly can be constructed by attaching the magnetron 11 by inserting an antenna into the heating chamber 10c, and arranging the interior light 12 in the interior light storage chamber 10.

FIG. 3 shows the planar arrangement space surrounding the heating chamber. 13 in the figure is a turntable, and since the back side of the heating chamber is shaped like an arc along the turntable 13, there is no wasted space, and it can be clearly seen that cleaning performance is excellent.

In the above embodiment, the internal light storage chamber 10 is formed for convenience, but it is not necessary, and the waveguide 9 formed outside the corner spanning the left and right side walls and the back wall of the heating chamber can also be directly connected. It is not necessary if the antenna of the magnetron 11 is arranged outside the corner so as to face the inside of the heating chamber, and the parts arranged at the corner are not limited to the above parts, such as the intake and exhaust ducts, etc. Of course, it is possible to use heating chamber related parts other than the parts mentioned above.

<Effects> Since the microwave oven of the present invention has the above-described configuration, the external dimensions of the product can be reduced, and the waveguide duct that conventionally forms a waveguide path can be eliminated. By reducing the number of parts, product cost and installation space can be reduced.

[Brief explanation of the drawing]

Figure 1 is an external perspective view of the heating box assembly of the present invention seen from the back side, Figure 2 is an exploded perspective view of the heating box of the present invention, and Figure 3 shows the planar arrangement space of the heating box of the present invention. The explanatory diagram shown in FIG. 4 is an external perspective view of a conventional heating box. Code 5: body plate, 5b: interior lighting hole, 5c: power supply hole, 9: waveguide path, 12: interior light.

Claims (1)

[Scope of utility model registration request] A heating chamber is formed from a front plate having an opening, a top plate, a bottom plate, and a body plate formed by curving left and right side walls and a back wall into an arc shape, and both ends of the body plate are bent from the rear. The rear plates are joined together to form a waveguide path and an interior light storage chamber on the outside of the corner section spanning the left and right side walls and the back wall.
A microwave oven characterized in that an antenna is located within the waveguide and a magnetron is disposed therein, and an interior light is disposed in an interior light storage chamber.