KR20090071262A - Cmicrowave oven - Google Patents

Abstract

A microwave oven is provided to increase thermal efficiency and to improve effect of steam function by preventing hot air or steam inside the cavity from flowing out to the outside. A microwave oven comprises a main body wherein an intake port and an exhaust port(118) are formed; a plurality of opening and closing units(120) which opens and closes at least one of the intake poet and exhaust port; a driving unit(130) which rotates one of the opening and closing units; and a link unit(140) which rotates the opening and closing units together when one opening and closing unit rotates.

Description

Microwave {CMICROWAVE OVEN}

The present invention relates to a microwave oven, and more particularly, to a microwave oven having an improved intake and exhaust structure.

Various kinds of apparatuses have been proposed to date as heating apparatuses for heating foods. The most basic heating device is a container that is in direct contact with the heat source, the contents to be cooked in such a container can be cooked by applying heat to heat.

In addition, many types of cooking apparatuses that use electric energy directly or indirectly have been developed. As an example, a microwave oven using microwaves as a heating source may be mentioned. A microwave oven is a cooking apparatus that generates microwaves using electricity to infiltrate a cooking object and heats the cooking object by causing molecular motion therein.

A common microwave oven is a kitchen appliance that heats the inside and outside of the microwave by irradiating the high frequency of the magnetron to the food at the same time, significantly reducing the cooking time of the food due to high thermal efficiency, and losing the 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.

1 is a perspective view showing a microwave oven according to the prior art, Figure 2 is a cross-sectional view of the microwave oven shown in FIG.

1 and 2, the microwave oven according to the related art includes a cavity 10 having a cooking chamber 11 formed therein, a cabinet 20 installed to surround the outside of the cavity 10, A door 30 for opening and closing the open front of the cooking chamber 11 and an operation panel 40 for setting various cooking conditions and for turning on or off the microwave oven are provided.

The tray 50 on which the food to be cooked is placed is placed on the bottom surface of the cavity 10, and a motor (not shown) for rotating the tray 50 is provided below the tray 50.

In the cavity 10 located at the side of the cooking chamber 11, an electric equipment chamber 12 is formed. In the electric equipment chamber 12, a magnetron 61 for generating microwaves and a high pressure condenser (not shown) are provided. The magnetron 61, a high voltage transformer 62 for applying a high voltage to the high voltage capacitor, a cooling fan 63, and the like are provided.

Looking at the cooking process by the microwave according to the prior art, the food is placed in the tray 50 placed on the bottom surface of the cooking chamber 11, and then operating the operation panel 40 to set the cooking conditions and the microwave oven When operated, microwaves are generated in the magnetron 61 by the high voltage applied from the high pressure transformer 62, and the food is heated and cooked by the microwaves being irradiated on the food placed in the tray 50. At this time, the tray 50 is rotated at a constant speed by the motor, the food placed in the tray 50 is evenly heated.

The inlet port 13 and the exhaust port 14 are formed in the cavity 10 of the microwave oven according to the related art. The inlet port 13 is formed on the inner wall of the cavity 10 across the cooking chamber 11 and the electric chamber 12, and the exhaust port 14 is formed on the opposite side thereof.

The air introduced into the electric compartment 12 by the cooling fan 63 during the operation of the microwave oven cools the various heating parts in the electric compartment 12 while passing through the electric compartment 12 and the cooking chamber through the inlet 13. (11) flows into. After cooking is performed by the introduced air, hot air or steam in the cooking chamber 11 is discharged out of the microwave oven again through the exhaust port 14.

In the conventional microwave oven as described above, there is a single-function microwave oven having only the above-described configuration. In addition, a grill-type microwave oven having a function of a grill provided with a heater above or below the cooking chamber 12; There is a convection microwave oven having an oven function to convection hot air by providing a heater and a convection fan at the rear of the cooking chamber 120, and a steam microwave oven having a steam function.

According to the microwave oven according to the prior art described above, since the inlet and exhaust ports are always open, in the case of the grill type microwave oven or the convection microwave oven, a part of the exhaust air vent is heated while the hot air generated by the heater is circulated inside the cooking chamber. Since it is discharged through, and at the same time the cold air is introduced into the cooking chamber through the intake port, there is a problem that the heat loss occurs thereby reducing the heating efficiency.

In addition, in the case of a steam microwave oven, since the steam introduced into the cooking chamber is discharged through the inlet and the exhaust port to be lost to the outside, the steam function is deteriorated. Therefore, there is a need for improvement.

The present invention has been made to improve the above problems of the prior art, and an object thereof is to provide a microwave oven having an improved structure to reduce heat loss and steam loss.

A microwave oven according to the present invention comprises: a main body in which an inlet and an exhaust port are formed; A plurality of opening and closing parts rotatably coupled to the main body to open and close at least one of the inlet port and the exhaust port; A driving unit for rotating any one of the plurality of openings and closings; And a link unit connecting the plurality of openings and closing parts of the opening and closing unit to rotate the plurality of openings and closing parts.

Here, the main body, the housing is provided with the plurality of opening and closing rotatably coupled; The opening and closing part is formed on the other side of the vane and the vane to open and close at least one of the inlet or the exhaust port is coupled to the rotary shaft, one side is coupled to the rotary shaft rotatable to the link portion It is preferable to have a coupling shaft to be coupled.

In addition, the housing, it is preferable that the fitting groove is formed to be rotatably coupled to the rotating shaft.

In addition, the rotation shaft, it is preferable that the fitting protrusion coupled to the fitting groove is formed.

In addition, the coupling shaft, it is preferable that a support portion for supporting the link portion to the upper side is formed on one side coupled with the link portion.

According to the microwave oven according to the present invention, unlike the conventional invention, at least one of the inlet port or the exhaust port is provided with an opening and closing portion for opening and closing the inlet or exhaust port, while the grill heater, the convection heater, or the steam device is operated, the cold outside Since the air can be prevented from flowing into the cooking chamber and the hot air or steam inside the cooking chamber can be prevented from flowing out, the thermal efficiency can be increased, and the effect of the steam function can be improved.

In addition, by increasing the thermal efficiency as described above, it is possible to reduce the running time of the grill heater, the convection heater, thereby providing the effect of saving power, as well as a portion of the external temperature rise of the cavity.

In addition, by providing a plurality of opening and closing portion on the inlet or exhaust port side, and the structure to rotate the opening and closing unit integrally using the link portion, while maintaining the size of the entire microwave oven as in the prior art, the above effects can be achieved. There is an advantage.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a microwave oven 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 below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

3 is a cross-sectional view schematically showing the configuration of a microwave oven according to an embodiment of the present invention, Figure 4 is a perspective view showing a part of the microwave oven shown in FIG.

3 and 4, the microwave oven 100 according to an embodiment of the present invention includes a main body 110, an opening and closing unit 120, a driving unit 130, and a link unit 140.

The main body 110 includes a cavity 111 and an outer case 112. Inside the cavity 111, a cooking chamber 113 is formed, and an electrical equipment room 114 is formed at one side of the cooking chamber 113.

The electric compartment 114 is a place where components constituting the microwave oven 100 are installed, and the magnetron 115 generating high frequency radiation inside the cooking chamber 113 on the wall of the electric compartment 114 of the cavity 111. ) Is provided. In addition, the lower portion of the magnetron 115 is equipped with a high-voltage transformer 116 for boosting the commercial voltage supplied from the outside to the high pressure required for the operation of the magnetron 115. In addition, the electrical equipment chamber 114 is provided with a cooling fan (not shown) for introducing external air into the electrical equipment chamber 114.

In the cavity 111, an inlet port 117 and an exhaust port 118 are formed. The inlet port 117 is formed on the inner wall of the cavity 111 crossing between the cooking chamber 112 and the electric chamber 113, and the exhaust port 118 is formed on the opposite side thereof. The housing 119 is provided at a portion adjacent to at least one of the inlet port 117 and the exhaust port 118 of the cavity 111. The housing 119 is preferably formed in a rectangular frame shape in which the front and rear surfaces are open, and may be coupled to the cavity 111 to surround at least one of the inlet port 117 and the exhaust port 118.

The opening and closing portion 120 is rotatably coupled to the main body 110, more specifically, the housing 119 provided on the cavity 111. A plurality of such opening and closing portion 120 is provided to open and close at least one of the inlet port 117 or the exhaust port 118, each of the opening and closing portion 120, the rotary shaft 122, the vane 124 and the coupling shaft ( 126).

The rotating shaft 122 is rotatably coupled to the housing 119. The rotating shaft 122 may have a rod shape vertically disposed with respect to the bottom surface of the cooking chamber 112 or the electrical equipment chamber 113, one side of which may be rotatably inserted into the upper portion of the housing 119, and the other side thereof. The side is fitted with the fitting protrusion 122a is rotatably fitted to the fitting groove 119a formed in the housing 119. By the fitting coupling of the fitting protrusion 122a and the fitting groove 119a as described above, the rotary shaft 122 is detachably coupled to the housing 119 and is not randomly separated from the housing 119 in a downward direction. Is supported.

The vane 124, one side thereof is coupled to the rotation shaft 122. The vane 124 is provided to rotate about the rotation shaft 122 to open and close at least one of the inlet port 117 and the exhaust port 118.

On the other side of the vane 124, the coupling shaft 126 is formed. The coupling shaft 126 is rotatably coupled to the link unit 140, which will be described later.

Meanwhile, according to the present exemplary embodiment, three openings 120 are illustrated on the housing 119, but the present disclosure is not limited thereto, and the openings 120 may be less than three or more than three. Many may be deployed. For example, when the space between the cavity 110 and the outer case 112 is narrow, the width of each vane 124 may be reduced, and more than three openings 120 may be disposed.

The driver 130 is provided to rotate any one of the plurality of openings and closing parts 120. The driving unit 130 may be mounted on the cavity 111 in which the opening and closing unit 120 is mounted, and transmits power to a motor (not shown) and the rotational force of the motor to the rotating shaft 122 of the opening and closing unit 120. Means (not shown). Here, the motor can be operated as a corresponding switch operation of the control panel (not shown), and the power transmission means can be implemented by a combination of a plurality of gears and the like. The detailed structure and operation of the motor and the power transmission means is a matter that can be easily applied to those skilled in the art, detailed description thereof will be omitted.

The link unit 140 is provided to connect the plurality of openings and closing portions 120 coupled on the housing 119 of the main body 110. The link unit 140 is rotatably coupled to each opening / closing unit 120, so that when any one opening / closing unit 120 rotates, for example, the opening / closing unit 120 connected to the driving unit 130 rotates by the driving unit. If it is, the other opening and closing portion 120 coupled to the link unit 140 serves to integrally rotate.

The link unit 140 is rotatably coupled to the coupling shaft 126 formed on the other side of the opening and closing portion 120. The coupling shaft 126 is rotatably coupled to the link unit 140 by being inserted into a through hole (not shown) formed in the link unit 140, and thus, the coupling shaft 126 of the coupling shaft 126 coupled to the link unit 140. On one side, the support part 126a is formed to take the structure of supporting the link part 140.

Although not shown, the microwave oven 100 according to the present embodiment may include a grill heater at the upper portion of the cooking chamber 112 to implement a grill function, and a convection heater assembly at the rear of the cooking chamber 112. It is also possible to implement a convection function with a. Alternatively, a steam function may be implemented by having a steam device equipped with a heater for generating steam. The detailed configuration and operation for implementing the grill function, the convection function and the steam function as described above are obvious items that can be applied and implemented by those skilled in the art, and thus detailed description thereof will be omitted.

5 and 6 are perspective views showing the operating state of the microwave oven shown in FIG.

Hereinafter, an operation relationship of the microwave oven 100 according to an embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, the operation relationship of the opening-closing part 120 provided in the exhaust port 118 side, the drive part 130, and the link part 140 is demonstrated as an example.

First, when the grill heater, the convection heater, or the steam device is operated, and the inside of the cooking chamber is to be cut off from the outside, the opening and closing unit 120 in the open state is illustrated in FIG. 5 as shown in FIG. 4. As described above, the driving unit 130 is operated to rotate one opening and closing unit 120 connected to the driving unit 130.

When one opening and closing unit 120 rotates as described above, the link unit 140 connected to the opening and closing unit 120 moves according to the rotation of the opening and closing unit 120, and rotates all other opening and closing units 120.

Accordingly, the opening / closing part 120 that has opened the exhaust port 118 rotates as described above to shield the exhaust port 118, and when the intake port 117 (see FIG. 3) is also shielded in this manner, the cooking chamber ( 112, the inside is blocked from the outside so that outside air does not flow into the cooking chamber 112, and hot air or steam inside the cooking chamber 112 is not discharged to the outside.

On the contrary, when opening the inside of the cooking chamber 112 shielded from the outside, as shown in Figure 6, by operating the drive unit 130, the opening and closing unit 120 connected to the drive unit 130 in the opposite direction as before Rotate

When one opening and closing unit 120 rotates as described above, the link unit 140 connected to the opening and closing unit 120 moves according to the rotation of the opening and closing unit 120, and rotates all other opening and closing units 120.

As a result, the opening and closing portion 120 that shields the exhaust port 118 (see FIG. 5) rotates as described above to open the exhaust port 118, and the inlet port 117 (see FIG. 3) is opened in the same manner. When the inside of the cooking chamber 112 is opened, external air may be introduced into the cooking chamber 112, and the hot air or steam in the cooking chamber 112 may be discharged to the outside.

According to the microwave oven 100 of the present embodiment as described above, as described above, the opening and closing portion 120 for opening and closing the intake port 117 or the exhaust port 118 to at least one of the inlet port 117 or the exhaust port 118 is By providing a grill heater (not shown), a convection heater (not shown), or a steam device (not shown), the cool outside air can be prevented from flowing into the cooking chamber 112 and at the same time, the cooking chamber ( 112) Since the internal hot air or steam can be prevented from leaking to the outside, the thermal efficiency is increased, and the effect of the steam function can be improved.

In addition, by increasing the thermal efficiency as described above, it is possible to reduce the operating time of the grill heater, the convection heater, thereby providing the effect of saving power, as well as a portion of the external temperature rise of the cavity.

In addition, a plurality of openings and closing parts 120 are provided on the inlet port 117 or the exhaust port 118 side, and the opening and closing part 120 is integrally rotated using the link part 140, thereby providing a microwave oven ( 100) While maintaining the overall size as in the prior art, there is an advantage that can implement the above effects.

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

1 is a perspective view showing a microwave oven according to the prior art.

2 is a cross-sectional view of the microwave oven shown in FIG. 1.

3 is a cross-sectional view schematically showing the configuration of a microwave oven according to an embodiment of the present invention.

4 is a perspective view illustrating a part of the microwave oven illustrated in FIG. 3.

5 and 6 are perspective views showing the operating state of the microwave oven shown in FIG.

Explanation of symbols on the main parts of the drawings

100: microwave oven 110: main body

111: cavity 112: cooking chamber

120: opening and closing part 122: rotation axis

124: vane 126: coupling shaft

130: drive unit 140: link unit

Claims (5)

A main body on which an inlet and an exhaust port are formed; A plurality of opening and closing parts rotatably coupled to the main body to open and close at least one of the inlet port and the exhaust port; A driving unit for rotating any one of the plurality of openings and closings; And And a link unit that connects the plurality of opening and closing parts and rotates the plurality of opening and closing parts integrally when one of the opening and closing parts is rotated. The method of claim 1, The main body is provided with a housing to which the plurality of opening and closing parts are rotatably coupled; The opening and closing part is formed on the other side of the vane and the vane to open and close at least one of the inlet or the exhaust port is coupled to the rotary shaft, one side is coupled to the rotary shaft rotatable to the link portion Microwave oven having a coupling shaft to be coupled. The method of claim 2, The housing, the microwave oven, characterized in that the fitting groove is formed to be rotatably coupled to the rotating shaft. The method of claim 3, The rotating shaft, the microwave oven, characterized in that the fitting protrusion is coupled to the fitting groove portion is formed. The method of claim 2, The coupling shaft is a microwave oven, characterized in that the support portion for supporting the link portion to the upper side is formed on one side coupled with the link portion.

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