JPS6134709Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an electric cooker.

As shown in FIGS. 1 and 2, most conventional electric cookers have a roasting chamber 3 in a housing 1 that can be opened and closed by a door 2, and a grilling grate 4 in the roasting chamber 3. In addition, elongated tubes 5 are provided which face each other at the top and bottom with the gridiron 4 in between, and heating wires 6 such as nichrome wires are passed through these tubes 5 as shown in FIG. However, when baking the sliced bread 7, etc., which is the object to be roasted, the center of the sliced bread 7 is closest to the heat source, so it burns more than the periphery. For this reason, the sliced bread 7 has the small hole 8.
A diffusion plate 9 is used to diffuse the heat applied to the center of the grill, but although it can brown the roast uniformly, it increases the roasting time, increases the number of parts, and is difficult to assemble. It is something that exists.

In addition, as shown in Fig. 4, there are many folds 1 on the outer periphery.
The heating wire 6 is inserted into the tubular body 11 having a diameter of 0, and uneven winding due to elongation of the heating wire 6 and unevenness in the red-hot portion due to this are made visually difficult to see by the pleats 10, and the heat dissipation effect of the tubular body 11 is improved. Although there are devices that do this, they do not particularly prevent the center of the roasted object from burning.

This idea was created in view of the above points, and the purpose is to create an electric cooker that can roast objects uniformly and in a short time, and that can reduce the number of parts and manufacturing man-hours. That is.

This idea is to form a thick part that protrudes in the normal direction on the tube through which the heating wire is passed, and to increase the thickness of this thick part to the maximum thickness at the part facing the object to be roasted at the shortest distance. By changing the thickness so that it gradually becomes thinner toward the circumferential direction of the body, the object to be roasted can be evenly roasted, and the diffusion plate can be omitted, shortening the roasting time and reducing the number of parts and manufacturing man-hours. It is configured as follows.

An embodiment of this invention will be explained based on FIGS. 5 to 8. Components that are the same as those described in FIGS. 1 to 3 are designated by the same reference numerals, and description thereof will be omitted. A heating wire 6 wound into a coil is installed in the roasting chamber 3.
A tube body 12 is provided to be inserted through the tube. This tubular body 12 is made of porcelain, ceramic, quartz, etc., and has a circular cross-sectional area on its inner diameter, but its outer periphery has an elliptical cross-section so that the wall thickness protrudes upward or downward in the normal direction. Sections 13 and 14 are formed. That is, the inner diameter D of the tube body 12 is 8 mm, and the major axis A
is determined to be 17 mm, and the minor axis B is determined to be 11 mm. Therefore,
The maximum thickness C of the thick parts 13 and 14 is (A-
D)/2=4.5mm, which gradually becomes thinner toward the circumferential direction, and the minimum wall thickness E in the minor axis direction is (B
−D)/2=1.5mm. Further, the total length L of the tube body 12 is set to 260 mm.

In such a configuration, the tube body 12 is connected to the heating wire 6
The radiant heat is applied to the sliced bread 7. The tubular body 12 faces the center of the sliced bread 7, but the tubular body 12 is formed with a thick walled portion 13 that projects in the normal direction, and its thickness faces the sliced bread 7 at the shortest distance. Since the thickness of the portion is maximum and becomes thinner toward the circumferential direction, the radiant energy applied to one surface of the sliced bread 7 is uniform. Therefore, the sliced bread 7 can be baked evenly. Further, since the diffusion plate 9 shown in FIGS. 2 and 3 can be omitted, the roasting time can be shortened, and the number of parts and manufacturing steps can be reduced.

Note that the presence of the lower thick portion 14 allows the above-mentioned effect to be obtained without any problem even if the mounting position of the tube body 12 is upside down. Of course, as shown in FIGS. 9 to 11, a tubular body 15 in which one thick portion 14 is omitted may be used. In this case, the tube body 15
Although the outside of is not a correct ellipse, by setting A to 14 mm, the maximum thickness C of the thick part 13 can be determined.
4.5mm, and the minimum value E can be set to 1.5mm.
Further, as shown in FIG. 12, a tube body 17 having a thick walled portion 16 formed by a protrusion on a part of its outer periphery may be used,
As shown in FIG. 13, a tubular body 19 may be used in which a thick wall portion 18 is formed by making the hole through which the heating wire 6 passes eccentrically.

Since this invention is configured as described above, the object to be roasted can be roasted uniformly and in a short time without using a diffuser plate in the roasting chamber, and the number of parts and manufacturing man-hours can be reduced. It has the following effects.

[Brief explanation of the drawing]

Figure 1 is a scaled-down perspective view showing a general example of a conventional electric cooker, Figure 2 is a vertical sectional front view showing the inside of its roasting chamber in a scaled-down scale, and Figure 3 is a vertical sectional side view of its main parts. , FIG. 4 is a side view showing another conventional tube body, FIG. 5 is a vertical sectional side view of the main part showing an embodiment of this invention, FIG. 6 is a front view of the tube body, and FIG. 7 is a side view showing another conventional tube body. 8 is a side view of the tube, FIG. 9 is a front view showing a modification of the tube, FIG. 10 is a plan view of the tube, and FIG. 11 is a side view of the tube. side view of the body,
FIGS. 12 and 13 are side views showing other modified examples of the tubular body. 3...Roasting room, 4...Grilling grid, 6...Heating wire, 7
... Sliced bread (to be roasted), 12 ... Tube body,
13-14... Thick part, 15... Tube body, 16...
Thick part, 17... Pipe body, 18... Thick part, 19...
...Tube body.

Claims (1)

[Scope of utility model registration request] The roasting chamber is provided with a grill grate for holding the object to be roasted, and an elongated tube through which a heating wire is inserted, and the thick part protruding in the normal direction of the tube is set at the shortest distance from the object to be roasted. An electric cooking device characterized in that the wall thickness is the maximum at the opposing portions, and the wall thickness gradually becomes thinner as it goes in the circumferential direction of the tube body.