KR101339801B1 - Multi-function microwave oven - Google Patents

Abstract

An invention for a multifunction microwave oven is disclosed. The disclosed invention includes: a cavity in which a cooking chamber is formed; A heater unit generating heat in the cooking chamber; A first cover part coupled to the cavity to protrude into the cooking chamber and having a plurality of through holes formed therein; And a second cover part accommodating the heater part and coupled to the cavity.

According to the present invention, since the first cover portion is provided to protrude into the cooking chamber having a space extended by the second cover portion, the heat generated by the heater portion is directly transmitted to the inside of the cooking chamber, so that the heat discharged to the outside of the cooking chamber is Significantly reduced, less waste of heat, as well as radiant heat can be used with convective heat using the air flow inside the cooking chamber, there is an effect that can implement a high thermal efficiency.

Microwave, Heater, Cover

Description

Multifunctional microwave oven {MULTI-FUNCTION MICROWAVE OVEN}

The present invention relates to a microwave oven, and more particularly, to a multifunctional microwave oven having a grill function.

Various types of apparatuses have been proposed so far as heating apparatuses for heating foods. The most basic heating apparatus has a container which is in direct contact with a heat source, and the contents to be cooked are placed in the container and the cooked food can be cooked by applying heat.

There have been developed many kinds of cooking devices that directly or indirectly use electric energy, and examples thereof include a microwave oven using a microwave as a heating source. A microwave oven is a cooking device that generates microwaves by using electricity to infiltrate the object to be cooked, and induces molecular motion in the interior thereof to heat the object to be cooked.

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, recently, there is a monophonic microwave oven which uses a microwave of 2450 MHz emitted from a magnetron to cook food. In addition to a microwave, a grill heater is provided above and below the microwave oven to function as a grill And a convection type microwave oven having a convection heater and a convection fan at the rear of the cooking chamber in addition to a microwave, and a convection type microwave oven having an oven function to convect hot wind.

1 is an exploded perspective view showing the configuration of a microwave oven according to the prior art, Figure 2 is a partial cross-sectional view showing the mounting of the grill heater of the microwave oven according to the prior art.

1 and 2, in the microwave oven 1 according to the related art, external shapes of both sides and an upper surface of the microwave oven 1 are formed by the outer case 10.

The outer case 10 is formed by bending a plate having a predetermined width, and is coupled to the back plate 12 forming the outer surface of the microwave oven 1 and the base plate 14 forming the outer surface of the lower surface. do.

The base plate 14 is equipped with a cavity 20 that forms a cooking chamber 22 which is a space where food is cooked. Such a cavity 20 is formed in a rectangular parallelepiped shape with an approximately front surface open, and plates forming at least one surface are coupled to each other.

The top cavity 24 which forms the upper surface of the cavity 20 is provided with the grill heater 30 for heating the food accommodated in the cooking chamber 22 with radiant heat. In general, a halogen heater is used for the grill heater 30, and a plurality of grill heaters 30 are provided as necessary.

In addition, one side of the top cavity 24 on which the grill heater 30 is mounted, the perforated part 26 in which a plurality of holes are formed so that radiant heat radiated from the grill heater 30 can be transmitted to the inside of the cooking chamber 22. Is formed. The perforations 26 are formed larger than the area occupied by the grill heater 30, so that the radiant heat irradiated from the grill heater 30 can be easily transmitted.

And, above the perforation part 26, the heater cover 32 which accommodates the grill heater 30 is attached. The heater cover 32 is formed to shield the entire punching portion 26 from above, and is formed recessed upward to form a space in which the grill heater 30 can be accommodated.

That is, the grill heater 30 is accommodated in the inside of the heater cover 32, the upper side and the side are shielded, and the lower side of the grill heater 30 is shielded by the perforation part 26. As shown in FIG. Therefore, the grill heater 30 is mounted inside the space formed by the perforation part 26 and the heater cover 32.

According to the above-described multifunctional microwave oven, the heat generated by the grill heater is introduced into the cooking chamber through the punching hole, which is formed at the boundary between the inside and the outside of the cooking chamber, Since a considerable amount does not flow into the cooking chamber and is discharged to the outside of the cooking chamber, there is a problem that the thermal efficiency is lowered. Therefore, there is a need to improve this.

The present invention has been made to improve the problems of the prior art as described above, it is an object of the present invention to provide a multifunctional microwave oven with an improved structure to improve the thermal efficiency.

Multifunctional microwave oven according to the present invention comprises: a cavity in which a cooking chamber is formed; A heater unit generating heat in the cooking chamber; A first cover part coupled to the cavity to protrude into the cooking chamber and having a plurality of through holes formed therein; And a second cover part accommodating the heater part and coupled to the cavity.

Here, the first locking portion is formed in the cavity; Preferably, the second cover portion includes a second locking portion that is engaged with the first locking portion and couples the second cover portion to the cavity.

The first cover part may be formed to protrude round the inside of the cooking chamber.

In addition, the reflector is preferably formed to protrude round the outside of the cavity.

In addition, it is preferable to further include a flange portion extending from the first cover portion to be coupled to the second cover portion.

In addition, one side is preferably coupled to the cavity, the other side is preferably further provided with a bracket coupled to the heater.

In addition, the bracket is formed to protrude from one side of the bracket, it is preferable to have a protrusion connected to the cover portion through the cavity.

The through hole may be formed in the first cover part in a direction orthogonal to the radial direction of the heater part.

According to the multifunctional microwave oven according to the present invention, unlike the conventional invention, the first cover portion is provided to protrude into the cooking chamber having a space extended by the second cover portion, so that the heat generated by the heater portion is directly inside the cooking chamber. Since it is transmitted, the heat discharged to the outside of the cooking chamber is reduced considerably, so that less waste of heat, as well as radiant heat can be used with convective heat using the air flow inside the cooking chamber, it is possible to implement a high thermal efficiency.

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 thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

3 is a perspective view showing a part of the multi-function microwave oven according to an embodiment of the present invention, Figure 4 is a cross-sectional view of the multi-function microwave oven along line IV-IV of FIG.

3 and 4, the multifunction microwave oven 100 according to an embodiment of the present invention includes a main body 110, a heater 120, a first cover 130, and a second cover. 140.

The main body 110 includes a cavity 111 and an outer case (not shown). The cooking chamber 112 is formed in the cavity 110, and an opening 113 is formed in the upper part of the cavity 110 to communicate the inside of the cooking chamber 112 with the outside.

In addition, one side of the main body 110 is formed in the cooking chamber 112, the electrical chamber 114 is provided with a magnetron 115, a high-pressure transformer 116 and the like for irradiating high frequency. Since the configuration and operation of the main body 110 is similar to that of a general microwave oven, a detailed description thereof will be omitted.

The heater 120 is provided to generate heat in the cooking chamber 112 and is disposed above the cavity 111. This heater part 120 is equipped with one or more heaters 122. In the present embodiment, it is illustrated that the heater unit 120 is provided with two heaters 122, but is not limited thereto. Each heater 122 is disposed to be positioned above the opening 113 formed above the cavity 110, and may be coupled onto the cavity 111 by the bracket 150.

Here, the bracket 150 is provided to couple each heater 122 provided in the heater unit 120 to the cavity 111, one side of which is coupled to the cavity 111 and the other side of the heater unit ( It is coupled to each heater 122 provided at 120.

The first cover part 130 is disposed below the opening 113 and is coupled to the cavity 111. More specifically, the first cover part 130 is disposed below the opening 113 so as to surround the opening 113, and is coupled to the inner surface of the cavity 111 in contact with the cooking chamber 112. A plurality of through holes 132 are formed in the first cover part 130, and the first cover part 130 has a inside of the cooking chamber 112 so that the through holes 132 can be disposed in the cooking chamber 112. It is provided with a protruding shape.

The second cover part 140 is disposed above the opening 113 and is coupled to the cavity 111. More specifically, the second cover part 140 is disposed above the opening 113 so as to surround the opening 113, and is coupled to the outer surface of the cavity 111. The second cover part 140 is formed to protrude above the cavity 111 and accommodates the heater part 120 therein. At this time, an end of each of the heaters 122 passes through the second cover part 140 and protrudes to the outside of the second cover part 140. Thus, the end of each of the heaters 122 protruding to the outside of the second cover portion 140 is coupled on the cavity 111 by the bracket 150.

The second cover part 140 may be fitted onto the cavity 111. To this end, the first engaging portion 117 is formed at the end surrounding the opening 113 in the cavity 111. The first catching part 117 may be formed by bending an end portion of the cavity 111 surrounding the opening 113 in an upward direction. In addition, a second catching part 142 is formed at an end of the second cover part 140 that is coupled to the cavity 111. The second catching part 142 is provided to be caught by the first catching part 117 formed in the cavity 111, and the end of the second cover part 140 coupled to the cavity 111 in the downward direction. It can be formed by bending.

Accordingly, the second cover part 140 is positioned on the cavity 111 so that the second catching part 142 is caught by the first catching part 117, and the first catching part 117 and the first catching part that are caught with each other. By combining the two catching parts 142 by pressing, the coupling between the second cover part 140 and the cavity 111 may be completed.

The internal space formed by the second cover part 140 communicates with the cooking chamber 112 formed by the cavity 111. That is, the space occupied by the cooking chamber 112 is further extended by an inner space formed by the second cover part 140 provided to protrude upward from the cavity 111 on the cavity 111.

Although not shown, a heat shield cover part may be further provided outside the second cover part 140 to accommodate the second cover part 140. The heat shield cover part is provided between the second cover part 140 and the outer case and is coupled to the cavity 111. The heat shield cover part protects the heater part 120 and the second cover part 140 from an external shock and serves to block heat generated from the heater part 120 from being transferred to the outer case.

According to the multi-function microwave oven 100 of the present embodiment as described above, as described above, the first cover portion 130 to protrude into the cooking chamber 112 having a space extended by the second cover portion 140. Since the heat generated by the heater unit 120 is directly transmitted to the inside of the cooking chamber 112, the heat discharged to the outside of the cooking chamber 112 is reduced to a considerable amount, thereby reducing the waste of heat, as well as the radiant heat. Since the convection heat using the internal air flow can also be used, there is an effect that can realize a high thermal efficiency.

FIG. 5 is a view illustrating a part of the multifunctional microwave oven viewed from the Ｖ-Ｖ direction of FIG. 3, and FIG. 6 is an exploded perspective view of the first cover part, the second cover part, and the heater part shown in FIG. 5.

5 and 6, the first cover portion 130 is further provided with a flange portion 160. The flange portion 160 extends from both sides of the first cover portion 130 and is coupled to the second cover portion 140. In this case, the flange portion 160 may be joined to the second cover portion 140 by welding or the like.

According to the present exemplary embodiment, a coupling hole 144 is formed in a portion of the second cover part 140 to which the respective heaters 122 provided in the heater part 120 are coupled. Ends of the heaters 122 protrude out of the second cover part 140 through the second cover part 140 through the coupling holes 144 formed in the second cover part 140 as described above.

When the multifunction microwave oven 100 of the present embodiment performs cooking using high frequency in the cooking chamber 112, the high frequency inside the cooking chamber 112 is coupled to the second cover part 140. It serves to block so as not to leak through a gap generated between the ball 144 and each heater 122 inserted into the coupling hole 144.

That is, according to the multifunction microwave oven 100 of the present embodiment, the flange portion 160 is formed on the first cover portion 130 so as to extend in the horizontal direction toward the second cover portion 140, and the flange portion ( 160 is bonded to the lower surface of the second cover portion 140 to wrap the coupling portion of the first cover portion 130 and the second cover portion 140, the interior of the cooking chamber 112 and the coupling hole 144 side It is possible to block the high frequency inside the cooking chamber 112 from leaking to the outside of the multi-function microwave oven 100 of the present embodiment by blocking the gap between the and the cooking chamber 112.

Meanwhile, in the present exemplary embodiment, the flange portion 160 is illustrated as being bonded to the second cover portion 140, but is not limited thereto. The flange portion 160 may have a lower surface of the second cover portion 140. It may be coupled to the inner surface of the cavity 111 in the form wrapped around.

7 is a cross-sectional view of the multifunctional microwave oven taken along the line VII-VII of FIG. 3. The illustration of the heater unit is omitted here for convenience of explanation.

Referring to FIG. 7, in the multifunctional microwave oven 100 of the present embodiment, the cavity 111 is provided in a coated state, and the second cover portion 140 is unpainted. ) Is provided in a state.

According to the multi-functional microwave oven 100, since the cavity 111 is provided in a painted form, the second cover portion 140 coupled with the cavity 111 is not grounded. As such, when the second cover part 140 is not grounded, an electric shock may occur due to a current flowing in the heater 122 (see FIG. 5) provided in the heater part 120 (see FIG. 5).

On the other hand, in the cavity 111, the ground hole 118 is formed in the portion coupled to the bracket 150. The position of the part in which the ground hole 118 is formed is also the position adjacent to the part in which the 1st catching part 117 was formed. In addition, the protrusion 150 is provided in the bracket 150. The protrusion 152 is formed to protrude from one side of the bracket 150. The protrusion 152 may be formed by cutting and bending one side of the bracket 150.

The protruding portion 152 is inserted into the cavity 111 through the ground hole 118 formed in the cavity 111, and the second cover part is caught and coupled to the first catching part 117 of the cavity 111. By being connected to the second locking portion 142 of the 140, a ground structure for the second cover portion 140 is formed.

As described above, according to the multi-functional microwave oven 100 of the present embodiment, the cavity 111 is provided in a painted state, and the second cover part 140 is provided in an unpainted state, but the protrusion 150 is provided on the bracket 150. 152 is formed, and since the protrusion 152 is inserted into the cavity 111 and connected to the second cover part 140 to form a ground structure for the second cover part 140, the heater part 120. There is an effect of preventing an electric shock accident by the current flowing through the).

On the other hand, the above-mentioned multi-function microwave oven is only one embodiment of the present invention, there may be a number of other embodiments.

FIG. 8 is a perspective view illustrating a part of a multifunctional microwave oven according to another embodiment of the present invention, and FIG. 9 is a cross-sectional view of the multifunctional microwave oven taken along the line VII-VII of FIG. 8.

Here, the same reference numerals as in the above-described drawings are components that have the same or similar functions, and thus, repeated descriptions thereof will be omitted.

8 and 9, the first cover part 230 is disposed under the opening 113 to surround the opening 113, is coupled to the inner surface of the cavity 111, and has a plurality of through holes 232. ) Is similar to the first cover 130 according to an embodiment, but unlike the embodiment, is formed to protrude round into the cooking chamber 112.

As illustrated in the drawing, the first cover part 230 may be rounded to be divided into two parts corresponding to the number of heaters 122. The through hole 232 is formed in the second cover portion 230 in a direction orthogonal to the radial direction of the heater 122 provided in the heater unit 120.

According to the first cover part 230 having such a shape, since the diverging direction of the heat radiated radially from the heater 122 and the opening direction of the through hole 232 coincide with each other, the heat radiated from the heater 122 The cooking chamber 112 has an effect that can be delivered more efficiently.

In addition, according to the multi-function microwave oven 200 according to another embodiment of the present invention, the second cover portion 240 protrudes round the outside of the cavity 111, more specifically, the upper portion of the cavity 111. It is formed to be.

Like the first cover part 230, the second cover part 240 may be rounded to be divided into two parts corresponding to the number of heaters 122. According to the second cover part 240 having such a shape, since the portion adjacent to the outer case (not shown) is reduced to a minimum by the rounded shape, the heat generated from the heater part 120 is transferred to the outer case. It has the effect of reducing the degree of transmission.

On the other hand, although not shown, in addition, further comprising a heat shield cover portion between the second cover portion 240 and the outer case, the heat shield cover portion of the cavity 111 in the same manner as the second cover portion 240 If it is formed so as to protrude round to the top, this heat radiation effect can be further doubled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of protection of the present invention should be defined by the following claims.

1 is an exploded perspective view showing the configuration of a microwave oven according to the prior art.

Figure 2 is a partial cross-sectional view showing the mounting appearance of the grill heater of the microwave oven according to the prior art.

3 is a perspective view showing a part of a multi-functional microwave oven according to an embodiment of the present invention.

4 is a cross-sectional view of the multifunctional microwave oven taken along line IV-IV of FIG. 3.

FIG. 5 is a view illustrating a part of the multifunctional microwave oven viewed from the Ｖ-Ｖ direction of FIG. 3.

FIG. 6 is an exploded perspective view of the first cover part, the second cover part, and the heater part shown in FIG. 5.

7 is a cross-sectional view of the multifunctional microwave oven taken along the line VII-VII of FIG. 3.

8 is a perspective view showing a part of a multifunctional microwave oven according to another embodiment of the present invention.

9 is a cross-sectional view of the multifunctional microwave oven taken along the line VII-VII of FIG. 8.

Description of the Related Art [0002]

100: microwave oven 110: main body

111: cavity 112: cooking chamber

113: opening 117: first locking portion

118: ground hole 120: heater

122: heater 130,230: first cover portion

132,232: through hole 140: second cover portion

142: second locking portion 144: coupling hole

150: bracket 152: protrusion

160: flange portion

Claims (8)

A cavity in which a cooking chamber is formed; A heater unit generating heat in the cooking chamber; A first cover part coupled to the cavity to protrude into the cooking chamber and having a plurality of through holes formed therein; A second cover part accommodating the heater part and coupled to the cavity; And One side is coupled to the cavity, the other side includes a bracket coupled to the heater, The bracket is formed to protrude from one side of the bracket, and is connected to the second cover portion through a ground hole formed in the cavity, characterized in that it comprises a protrusion for forming a ground structure for the second cover portion Multifunctional microwave. The method of claim 1, A first locking portion is formed in the cavity; The second cover portion, the multi-function microwave oven, characterized in that provided with a second locking portion which is engaged with the first locking portion to couple the second cover portion to the cavity. The method of claim 1, The first cover portion, characterized in that the multi-functional microwave oven is formed to protrude round the inside of the cooking chamber. The method of claim 1, The second cover portion, the multi-function microwave oven, characterized in that formed to protrude round the outside of the cavity. delete delete delete The method of claim 1, The first cover portion, wherein the through-hole is formed in a direction orthogonal to the radial direction of the heater unit.

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