KR20120015106A - Door for microwave range - Google Patents

Abstract

PURPOSE: A door for a microwave oven is provided to prevent electromagnetic waves from being emitted to the outside by additionally printing a cutoff layer on a cutoff sheet. CONSTITUTION: A door(1) for a microwave oven comprises an opening and closing plate, a cover plate(20), and a cutoff sheet(30). The opening and closing plate is hinged on a case unit and opens and closes a cooking chamber. The cover plate is coupled to the opening and closing plate and covers an opening hole formed in the opening and closing plate. The cutoff sheet is composed of a transparent material and is attached on the cover plate and cuts off electromagnetic waves. A cutoff layer(40) having multiple cutoff holes(41) is printed on the cutoff sheet and cuts off electromagnetic waves.

Description

Door for microwave oven {DOOR FOR MICROWAVE RANGE}

The present invention relates to a door for a microwave oven, and more particularly, to a door for a microwave oven to block electromagnetic waves used for cooking food so that electromagnetic waves do not leak to the outside.

A common microwave oven is a kitchen appliance that heats the inside and the outside of the microwave by irradiating the microwave with high frequency of the magnetron, and greatly reduces the cooking time of the food due to high thermal efficiency, and loses nutritional value during cooking, thawing and warming of the food. It is also widely used because of the advantages such as cooking directly while the food is stored in the container.

In addition, in recent years, there is a single-function microwave oven that cooks food using only 2450MHz microwaves emitted from the magnetron, and a grill type having a grill function having a grill heater above or below the cooking chamber in addition to the microwave. In addition to a microwave oven and a microwave, there is a multifunctional microwave oven such as a convection type microwave oven having a convection heater and a convection pan at the rear of the cooking chamber and having an oven function to convection hot air.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean a conventional technology well known in the art.

In a conventional microwave oven, a door is formed of an iron plate so that electromagnetic waves are not radiated to the outside, and the iron plate has a porous shape for diffraction of electromagnetic waves.

However, such a plate-shaped door is difficult to operate by the elderly due to its own load, there is a problem that the door is damaged in the porous molding process for thick steel plate.

Therefore, there is a need for improvement.

The present invention has been made to solve the above problems, and an object thereof is to provide a door for a microwave oven that reduces the load and is easy to operate and suppresses manufacturing defects.

In order to achieve the above object, the present invention is coupled to the case and the hinge opening and closing plate for opening and closing the cooking chamber; A cover plate coupled to the opening and closing plate and covering the opening hole formed in the opening and closing plate; And it is attached to the cover plate provides a door for a microwave oven comprising a blocking sheet for blocking electromagnetic waves.

The cover plate is made of a transparent material, and the blocking sheet is characterized in that it comprises a transparent material.

The blocking sheet is characterized in that the blocking layer is printed for blocking the electromagnetic waves.

The blocking layer is characterized in that a plurality of blocking holes are formed.

The door for a microwave oven according to the present invention has an effect of preventing the electromagnetic wave is emitted to the outside while the transparent sheet blocking the visual observation of the cooking chamber.

The microwave oven door according to the present invention has an effect of additionally blocking the external radiation of electromagnetic waves by additionally printing a blocking layer on the blocking sheet.

1 is a view schematically showing a door for a microwave oven according to an embodiment of the present invention.
2 is an exploded perspective view of a cover plate and a blocking layer of a door for a microwave oven according to an embodiment of the present invention.
3 is a cross-sectional view of the cover plate and the blocking layer of the door for a microwave oven according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a microwave oven door according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a view schematically showing a door for a microwave oven according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the cover plate and the blocking layer of the door for a microwave oven according to an embodiment of the present invention, Figure 3 Is a cross-sectional view of the cover plate and the blocking layer of the door for a microwave oven according to an embodiment of the present invention.

1 to 3, the door 1 for a microwave oven according to an embodiment of the present invention includes an opening and closing plate 10, a cover plate 20, and a blocking sheet 30.

The opening and closing plate 10 is hinged to the case part 100 of the microwave oven. The case part 100 is provided with a cooking chamber 110 having an open front surface, and the opening and closing plate 10 opens and closes the cooking chamber 110.

The cover plate 20 is coupled to the opening and closing plate 10. The cover plate 20 covers the opening hole 11 formed in the opening and closing plate 10.

The cover plate 20 is mounted inside the opening and closing plate 10 or is coupled to the inner surface of the opening and closing plate 10 by a separate fixture 21.

The blocking sheet 30 is attached to the cover plate 20. The blocking sheet 30 is made of a material that blocks electromagnetic waves.

The blocking sheet 30 is attached to the cover plate 20 by an adhesive, or is in close contact with the cover plate 20 by a separate fixture.

On the other hand, the cover plate 20 is made of a transparent material. The cover plate 20 is formed of a glass material or a transparent plastic material to enable visual observation of the cooking chamber 110 in a state where the opening and closing plate 10 is closed in the cooking chamber 110.

The blocking sheet 30 is made of a transparent material. The blocking sheet 30 is made of a transparent material that blocks electromagnetic waves so that visual observation of the cooking chamber 110 can be performed while the opening and closing plate 10 is closed in the cooking chamber 110.

The blocking sheet 30 is printed with a blocking layer 40 for blocking electromagnetic waves. The blocking layer 40 is formed on one side of the blocking sheet 30 to which electromagnetic waves of the cooking chamber 110 are in contact.

The blocking layer 40 increases the electromagnetic wave blocking rate of the blocking sheet 30 to suppress the radiation of electromagnetic waves to the outside.

A plurality of blocking holes 41 are formed in the blocking layer 40. Through such a blocking hole 41, the transmittance of electromagnetic waves is reduced.

Referring to the operation of the microwave oven door according to an embodiment of the present invention having the structure as described above are as follows.

By attaching the transparent blocking sheet 30 to the cover plate 20 of the transparent material, the user can visually check the inside of the cooking chamber 110 in the process of cooking food through a microwave oven.

Since the blocking sheet 30 is made of a material that blocks electromagnetic waves, the electromagnetic wave for cooking food in the cooking chamber 110 is suppressed to the outside by the blocking sheet 30.

On the other hand, the blocking sheet 30 is further printed with a blocking layer 40. The blocking layer 40 is made of a material that blocks electromagnetic waves, and may be made of the same material as the blocking sheet 30.

Since the plurality of blocking holes 41 having diameters through which electromagnetic waves are difficult to pass are formed in the blocking layer 40, electromagnetic waves are primarily blocked by the blocking layer 40.

In addition, even though some of the electromagnetic waves pass through the blocking layer 40, the radiation of the electromagnetic waves is secondarily blocked by the blocking sheet 30.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10: opening and closing plate 11: opening hole
20: cover plate 21: fixture
30: blocking sheet 40: blocking layer
41: blocking hole 100: case
110: cooking room

Claims (4)

Opening and closing plate hinged to the case portion to open and close the cooking chamber;
A cover plate coupled to the opening and closing plate and covering the opening hole formed in the opening and closing plate; And
The door for a microwave oven, characterized in that it comprises a blocking sheet attached to the cover plate to block electromagnetic waves. The method of claim 1,
The cover plate is made of a transparent material,
The blocking sheet is a microwave oven door comprising a transparent material. The method of claim 2,
The blocking sheet is a microwave oven door, characterized in that the blocking layer is printed for blocking the electromagnetic waves. The method of claim 3,
The door for a microwave oven, characterized in that a plurality of blocking holes are formed in the blocking layer.

Images