JP2003109745A - High frequency heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve high frequency leak prevention at a region where a door body inferior in high frequency leak prevention and a hinge overlap. SOLUTION: High frequency leak prevention of a door body 20 is improved by setting a slit choke 13 in a region where a door body 7 and an upper hinge 10 overlap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door of a heating cooker for heating and cooking an object to be cooked.

[0002]

2. Description of the Related Art Conventionally, a door body of this type has a slit choke 1 as shown in perspective views in FIG. 11 and FIG.
Had a structure in which the upper hinge 3 and the lower hinge 4 were combined on one side above and below. However, in the region where the door body 2, the upper hinge 3 and the lower hinge 4 overlap, the upper hinge 3 and the lower hinge 4 affect the high frequency impedance of the door body 2 and deteriorate the high frequency leakage performance. By providing the step on the lower hinge 4, the distance from the outer wall of the door body 2 is increased as much as possible, and the influence of the upper hinge 3 and the lower hinge 4 is minimized. In addition, as shown in the sectional view of FIG.
Since the high-frequency traveling direction is different by 90 ° in the corner part, the means for adding the radio wave absorbers ferrite 6-1 and 6-2 was usually used to improve the high-frequency leakage prevention performance.

[0003]

However, in the above-mentioned conventional structure, in the vicinity of the upper hinge and the lower hinge, when the distance between each hinge and the outer wall of the door body is increased, the outer shape of the outer shell forming the outside of the door plate is large. Because of this, there are restrictions on the design, and the increase in external shape is contrary to resource saving in terms of resources.

Further, in order to improve the high-frequency leakage prevention performance at the corners of the door body, the addition of ferrite causes a trouble in designing a space and a design for securing the space. In addition, the ferrite addition itself is resource-saving in terms of resources. It was against.

[0005]

Therefore, the present invention is to provide a slit choke structure in a region where the upper hinge and the lower hinge and the door body overlap each other.

Further, a strip choke structure is provided at a corner portion of a door body which has a bad high-frequency leakage prevention performance because the high-frequency traveling directions differ by 90 °.

According to the above invention, it is possible to improve the high frequency leakage prevention performance in the area where the upper hinge, the lower hinge and the door body overlap each other and the corner portion of the door body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a heating chamber for accommodating an object to be heated, a high-frequency generating means coupled to the heating chamber, and a high-frequency leakage prevention rotatable in an opening of the heating chamber. Therefore, a door body integrally formed with a slit choke structure, and a hinge for supporting the door body vertically so that the door body is rotatable, and the upper and lower hinges and the door body are The slit choke structure is provided on the door body in the overlapping region.

Further, even if the upper hinge and the lower hinge do not have a large distance from the outer wall of the door body, they do not adversely affect the high-frequency leakage prevention performance, so that the outer shape of the outer structure of the door body can be made compact, so that the design In addition to increasing the degree of freedom in terms of resources, considering resources, it is very effective in saving resources.

According to the second aspect of the present invention, the slit choke is provided at the corner of the door body.

Since it is possible to improve the high-frequency leakage prevention performance at the door corners, it is possible to omit the addition of ferrite and the study associated with the addition of ferrite. Since there is no need to study the design, the design can be simplified, and the abolition of ferrite, etc. is effective in terms of resource saving from a resource perspective.

[0012]

Embodiments of the present invention will be described below with reference to the drawings by taking an upper hinge portion as an example.

(Embodiment 1) FIG. 1 is a partial perspective view of a door for a high-frequency heating apparatus according to a first embodiment of the present invention, and FIG. 2 is a partial sectional view thereof.

In FIG. 1, in order to make the door body 7 rotatable, there is an upper pin unit 8 on the upper side of the door body 7 and a lower pin unit 9 on the lower side. The upper hinge 10 and the lower hinge 11 are fitted to each other. It supports the door body 7, and as shown in FIG. 2, the outer shell 12 of the door body 7 is located outside the door body 7. Further, a slit choke 13 is provided in the area where the door 7 and the upper hinge 10 overlap.

Next, the operation will be described. Door 7 and upper hinge 1
In the region where 0 overlaps, the high frequency is slit choke 13
Is attenuated and the upper hinge 10 does not disturb the high frequency impedance, so that good high frequency leakage prevention performance can be obtained. Further, in order to improve the high-frequency leakage prevention performance, a step is not provided on the upper hinge 10 and the size of the outer shell 12 does not become unnecessarily large, which is very effective from the standpoint of energy saving. Furthermore, since the size constraint of the outer shell 12 is reduced, the degree of freedom in design is increased.

If a step is provided on the outer wall of the door body 8 as shown in FIG. 3, the size restriction of the outer shell 15 is further reduced.

Furthermore, the shape of the slit choke is
Since the slit choke 18 shown in FIG. 4 and the slit choke 19 shown in FIG.

(Embodiment 2) FIGS. 6 and 7 are a partial perspective view and a rear surface perspective view showing a door body and a slit choke for a high frequency heating apparatus according to a second embodiment of the present invention.

As shown in FIG. 7, a slit choke 21 is provided at a corner portion of a door body 20 for a high frequency heating device.

By doing so, it becomes possible to improve the high frequency leakage prevention performance at the corner portion of the door body 20.

Since the shape of the slit choke has only to have high-frequency leakage prevention performance, the shape of the slit choke 22 shown in FIG. 8 having a slit at its base, the shape of the slit choke 23 shown in FIG. 9, and the shape shown in FIG. The shape of the slit choke 24 shown is also possible.

[0022]

As is apparent from the above description, according to the cooking device of the present invention, the following effects can be obtained.

By providing the slit choke in the region where the door and the hinge for the high frequency heating device overlap, it is possible to improve the high frequency leakage prevention performance in the region where the door and the hinge overlap. Have an effect.

Further, by providing the slit choke at the corner portion of the door body for the high frequency heating device, it becomes possible to improve the high frequency leakage prevention performance at the corner portion of the door body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a door body for a high-frequency heating device according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the door body for the high-frequency heating device according to the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing a first application example of the high-frequency heating device door body according to the first embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing a second application example of the high-frequency heating device door body according to the first embodiment of the present invention.

FIG. 5 is a partial perspective view showing a first application example of the slit choke shape according to the first embodiment of the present invention.

FIG. 6 is a partial perspective view showing a first application example of the slit choke shape according to the second embodiment of the present invention.

FIG. 7 is a partial perspective view showing the slit choke shape in Example 2 of the present invention from the back surface in Example 2 of the present invention.

FIG. 8 is a partial perspective view showing a first application example of the slit choke shape according to the second embodiment of the present invention.

FIG. 9 is a partial perspective view showing a second application example of the slit choke shape according to the second embodiment of the present invention.

FIG. 10 is a partial perspective view showing a third application example of the slit choke shape according to the second embodiment of the present invention.

FIG. 11 is a partial perspective view of an upper portion of a conventional door body for a high-frequency heating device.

FIG. 12 is a partial perspective view of a lower portion of a conventional door body for a high-frequency heating device.

FIG. 13 is a cross-sectional view of a conventional door body for a high-frequency heating device.

[Explanation of symbols]

7, 14, 16, 20 Door body 10 Upper hinge 11 Lower hinge 13, 18, 19, 21, 22, 23 Slit choke

Claims (2)

[Claims] 1. A door in which a heating chamber for accommodating an object to be heated, a high-frequency generating means coupled to the heating chamber, and a slit choke structure which is rotatable at an opening of the heating chamber and prevents high-frequency leakage are integrally formed. A high-frequency heating device comprising a body and a hinge for supporting the door body vertically so that the door body is rotatable, and a slit choke structure is provided in an area where the upper and lower hinges and the door body overlap. 2. The high-frequency heating device according to claim 1, wherein slit chokes are provided at the corners of the door body.