JP3932676B2 - High frequency heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-frequency heating device such as a microwave oven.
[0002]
[Prior art]
Conventionally, as shown in FIGS. 3 and 4, this apparatus has an assembly configuration of the door 2 positioned at the opening of the heating chamber 1, in which an operation panel unit 5 including a keyboard 3 and a control board 4 is attached to the door 2 with a mounting screw 6. Then, the shield van 8 having a radio wave choke groove around it by the arrow A7, the shield van mounting screw 10 by the arrow B9, and the choke cover 12 by the arrow C11 are sequentially attached.
[0003]
Accordingly, when the operation panel unit 5 is serviced when a failure occurs, disassembly opposite to that during assembly is required. Further, the inside of the heating chamber 1 has a structure in which steam and hot air 13 generated from the object to be heated easily flow in the direction of the arrow D14 from the gap between the heating chamber 1 and the shield van 8.
[0004]
[Problems to be solved by the invention]
In the case of this conventional configuration, since the operation panel unit 5 is mounted from the heating chamber 1 side, a space and a gap are generated in the fitting portion, so that steam and hot air 13 from the heating chamber 1 flow into the operation panel unit 5. As a result, the electrical circuit controlled by minute current and voltage leaks and has poor insulation, causing problems in quality performance. Further, when the operation panel unit 5 is serviced, it is difficult to provide a speedy and highly reliable service because parts cannot be replaced unless the shield van 8 or the like that affects the radio wave shielding performance is removed. In recent years, it has become a great social demand to facilitate the disassembly and separation of control circuit members containing a large amount of materials to be managed when recycling used products.
[0005]
And since the surface of the operation panel unit 5 touches a hand at every use, it is a necessary condition that it is easy to clean and is hygienic.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides an operation panel that controls, operates, and displays a shield van that faces the opening surface of the heating chamber and prevents high-frequency leakage, a screen glass that sees through the heating chamber, and a high-frequency generator. An openable / closable door equipped with the unit is provided, and is formed integrally with the door between the shield van and the operation panel unit so that steam and hot air from the heating chamber do not flow into the operation panel unit side. In addition to providing a shielding wall, the operation panel unit is inserted and fixed to the door by sandwiching the screen glass with a convex portion provided on the upper part, and the lower part is attached to the lower side surface of the door and locked with a screw or the like. Detachable.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The high-frequency heating device of the present invention is a heating chamber that houses and heats an object to be heated, a high-frequency generator that supplies a high frequency to the heating chamber, and an opening surface of the heating chamber, which prevents high-frequency leakage. A shield van, a screen glass that sees through the heating chamber, and an openable door equipped with an operation panel unit that controls, operates, and displays a high-frequency generator, etc., are provided between the shield van and the operation panel unit. And a shielding wall that prevents steam and hot air from the heating chamber from flowing into the operation panel unit side, and the operation panel unit sandwiches the screen glass with a convex portion provided on the upper portion thereof. The door is inserted and fixed to the door, and the lower part is attached to the lower side surface of the door and locked with a screw or the like to be detachable.
A heating chamber that houses and heats an object to be heated, a high-frequency generator that supplies a high frequency to the heating chamber, a shield van that faces the opening surface of the heating chamber and prevents high-frequency leakage, and the heating chamber are seen through And an openable / closable door equipped with an operation panel unit for controlling, operating, and displaying a screen glass, a high-frequency generator, and the like. The operation panel unit is removable from the surface side of the door.
[0008]
As a result, the panel unit can be detached from the front side of the door, and steam and hot air from the heating chamber side can be prevented from flowing into the operation panel unit, eliminating quality problems and reliability during service of the operation panel unit. And facilitate the disassembly and separation of used products during recycling.
[0009]
Further, since the operation panel unit upper insert is fixed to the door by holding the screen glass, are then engaging with screws or the like the lower the bottom side of the door, so as to facilitate cleaning the surface of the operation panel unit irregularities the free flat structure, the cleaning and easy hygienic construction.
[0010]
【Example】
Example 1
Embodiment 1 of the present invention will be described below with reference to the drawings. Fig.1 (a) is an external view of the high frequency heating apparatus of Example 1, (b) is an enlarged detail drawing of the principal part. FIG. 2 is a view showing an assembly order in a portion corresponding to FIG.
[0011]
In the figure, a high frequency is irradiated to the heating chamber 1 from a high frequency generator 15 built in the bottom of the heating chamber 1. A door 2A that is rotatable about a hinge 16 is attached to the opening of the heating chamber 1 in which an object to be heated is stored. The door 2A is fixed to the door 2A with a mounting screw 10 on the heating chamber 1 side, has a choke groove around it, and prevents the high-frequency radiation irradiated into the heating chamber 1 from leaking outside the product. A choke cover 12 that covers the choke groove of the shield van 8 is disposed. On the surface side of the door 2A, an operation comprising a screen glass 17 for seeing through the heating chamber 1 in the center, a keyboard 3 for inputting operation information at the bottom, and a control board 4 for controlling the high frequency generator 15 is provided. A panel unit 5A is configured. The operation panel unit 5A incorporates a keyboard 3 and a control board 4, and is provided with a lid B19 on the back side of the lid A18 on the front side, and is packaged as a whole, and is configured to be attached to and detached from the door 2A as a unit. .
[0012]
It will be described with reference to FIG. 2 showing the assembled structure of the door 2A of the operation panel unit 5A. Insert as shown by the arrow 22 in a recess 21 provided in the door 2A while the protrusion 20 provided on the upper portion of the operation panel unit 5A sandwiching the screen glass 17 located on the door 2A side, also operating in conjunction with this movement A boss 23 provided on the lower side surface of the panel unit 5A is mounted on the lower side surface of the door 2A as indicated by an arrow 24, and the operation panel unit 5A is locked to the door 2A with a mounting screw 25.
[0013]
In addition, a shielding wall 26 formed integrally with the door 2A is provided between the operation panel unit 5A and the shield van 8 so that steam and hot air 13 from the heating chamber 1 do not flow in, and is controlled by a minute current and voltage. The electrical circuit eliminates quality problems such as leakage and poor insulation.
[0014]
【The invention's effect】
As described above, according to the present invention, steam and hot air from the heating chamber side are prevented from flowing into the operation panel unit, quality troubles are solved, reliability of the operation panel unit is improved, and used. Facilitates disassembly and separation during product recycling.
[0015]
In addition, when the operation panel unit is mounted on the door, the upper part is inserted and fixed to the door with the screen glass sandwiched, and the lower part is locked to the lower side of the door with a mounting screw, making it easy to clean the surface of the operation panel unit. The product has a flat structure with no unevenness and provides hygienic products that are easy to clean.
[Brief description of the drawings]
1A is an external view of a high-frequency heating device according to a first embodiment of the present invention. FIG. 1B is a cross-sectional view of a main part of the high-frequency heating device according to the first embodiment of the present invention. Diagram showing the order [Fig. 3] Fig. 4 shows the conventional configuration diagram [Fig. 4] Fig. 3 shows the assembly sequence of the conventional configuration [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating chamber 2A Door 3 Keyboard 4 Control board 5A Operation panel unit 8 Shield van 15 High frequency generator 17 Screen glass 26 Shielding wall

Claims (1)

A heating chamber that houses and heats an object to be heated, a high-frequency generator that supplies a high frequency to the heating chamber, a shield van that faces the opening surface of the heating chamber and prevents high-frequency leakage, and the heating chamber are seen through An openable / closable door equipped with an operation panel unit for controlling, operating and displaying a screen glass, a high frequency generator, etc., and the heating chamber is formed integrally with the door between the shield van and the operation panel unit. And providing a shielding wall that prevents steam and hot air from flowing into the operation panel unit side, and the operation panel unit is inserted and fixed to the door by sandwiching the screen glass with a convex portion provided on the upper part thereof, A high-frequency heating device in which the lower part is attached to the lower side surface of the door and is detachable by locking with a screw or the like .

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