KR20070005427A - Microwave oven having variable cooking space - Google Patents

Abstract

A microwave oven is provided to reduce the space occupied by the microwave oven by minimizing the size of a cabinet and varying the size of a cooking chamber, and ensure the space for cooking by expanding the size of the cooking chamber during cooking. A microwave oven comprises a cabinet(100), a heater unit(110), a door(120), a cover(130), and an auxiliary cover(160). The cabinet has a predetermined space, and an inner wall where an inner case(102) is arranged to form a cooking chamber(101). The heater unit includes a magnetron interposed between the inner case and the cabinet so as to radiate microwave to the cooking chamber; and a waveguide(114) for guiding the microwave radiated from the magnetron into the cooking chamber. The door is arranged in an opening of the cabinet so as to open/close the cooking chamber. The cover permits a space formed in the open door to be communicated to the cooking chamber. The auxiliary cover is overlapped with the cover in a manner that the auxiliary cover is extended from the cover when the cover is protruded outwardly from the cooking chamber.

Description

Kitchen Variable Room Microwave {MICROWAVE OVEN HAVING VARIABLE COOKING SPACE}

1 is a perspective view of a microwave oven according to the prior art,

2 is a cross-sectional view showing a microwave oven according to the prior art,

Figure 3 is a perspective view of a cooking chamber variable microwave oven according to the present invention,

Figure 4 is a front cross-sectional view of the present invention,

Figure 5 is a side cross-sectional view of the present invention,

FIG. 6 is a detailed view of portion A shown in FIG. 5;

7 is a detailed view of the portion B shown in FIG.

8 is a detailed view of the portion C shown in FIG.

9 is a cross-sectional view showing the deflection prevention means of the present invention,

10 is a perspective view showing the choke portion of the offset means according to the present invention.

<Explanation of symbols on main parts of the drawings>

100: cabinet 101: cooking chamber

102: inner case 104: stopper

110: heating device 112: magnetron

114: waveguide 116: stirrer

118: motor 120: door

122: locking projection 124: door frame

126: shield plate 130: cover

132: step 134: cover frame

136: shielding frame 140: offset means

142: choke 144: cover

150: deflection prevention means 152: support

154: seating portion 160: auxiliary cover

162: auxiliary frame 164: shielding panel

170: sealing means 172: first locking portion

174: second locking portion

The present invention relates to a microwave oven, in particular, by minimizing the size of the cabinet, and by installing a cover that can be mounted in and out of the cooking chamber, so that the size of the cooking chamber can be extended to the outside of the cabinet, so that the volume of the cover is also variable The present invention relates to a cooking compartment variable microwave oven, in which the size of the cabinet can be further miniaturized.

In general, a microwave oven is a cooking apparatus capable of cooking food using microwaves in a short time, and microwaves generated from a magnetron to which high voltage is applied are irradiated into the food inside the cooking chamber through a waveguide. By vibrating the water molecules contained in the food to generate heat energy, the food is heated and cooked therein.

Such microwave ovens can cook various foods in various ways by appropriately adjusting the microwave output and the time that the microwave is irradiated to the food, and also to heat the already cooked food or to melt the frozen food. Can be used.

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

As shown in the drawing, the microwave oven includes a cabinet 10 having a cooking chamber 10a having a front surface open therein, an outer panel 20 and a cooking chamber 10a installed to surround the outside of the cabinet 10. A door 30 for opening and closing the opened front and an operation panel 40 for setting various cooking conditions and for turning on or off the microwave oven.

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

In addition, the side of the cooking chamber 10a of the cabinet 10 includes an apparatus chamber 10b, and a magnetron 61 and a high voltage condenser (not shown) for generating microwaves, and a high voltage to the magnetron 61 and the high voltage condenser. Apparatuses, such as a high pressure transformer (not shown) and a cooling fan 64, which apply the pressure, are installed in the apparatus chamber 10b.

Here, as shown in FIG. 2, the magnetron 61 generating microwaves is mounted on the sidewall of one side of the cooking chamber 10a of the cabinet 10 through the waveguide 65. One side wall of the cooking chamber 10a to which the waveguide 65 is attached is formed with a communication hole 11 for communicating the inside of the cooking chamber 10a with the waveguide 65.

In this way, the food is placed in the tray 50 placed on the bottom surface of the cooking chamber 10a, and then the operation panel 40 is set to set cooking conditions and operate the microwave oven. As a result, microwaves are generated in the magnetron 61, and the microwaves are guided into the cooking chamber 10a through the waveguide 65 and irradiated to the food placed in the tray 50, whereby the food is heated and cooked by microwaves. do.

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.

However, in the microwave oven according to the prior art, since the size of the cabinet is constant, a cooking chamber of a certain size or more must be formed to secure a space required for cooking, and thus the cabinet is also made of a certain size or more, which corresponds to the miniaturization trend of home appliances There is a problem that can not reduce the size of the microwave oven.

The present invention has been made to solve the above-mentioned problems of the prior art, by minimizing the size of the cabinet, by varying the size of the cooking chamber, to reduce the space occupied by the microwave oven to utilize the excess space of the kitchen, In cooking, an object of the present invention is to provide a cooking chamber variable microwave oven which enlarges the size of the cooking chamber to secure a space required for cooking.

In addition, the present invention is to provide a cooking chamber variable microwave oven so that the size of the cabinet can be further miniaturized by minimizing the space occupied in the cabinet by allowing the size of the cover for varying the cooking chamber can be varied. have.

According to the present invention for solving the above problems, the cooking chamber variable type microwave oven forms a predetermined space, and an inner case is installed on an inner wall thereof to form a cooking chamber, and is installed between the inner case and the cabinet to apply microwaves to the cooking chamber. A heating device comprising a magnetron to be irradiated and a waveguide for guiding microwaves irradiated from the magnetron into the cooking chamber, a door installed in the opening of the cabinet to open and close the cooking chamber, and installed and openly mounted to the opening of the cabinet. A certain space is formed inside the door, and the cover includes a cover for communicating with the cooking chamber, and an auxiliary cover extending from the cover when the cover protrudes out of the cooking chamber.

Hereinafter, an embodiment of a cooking chamber variable type microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view of a cooking chamber variable microwave oven according to the present invention, Figure 4 is a front sectional view showing the present invention, Figure 5 is a side sectional view showing the present invention.

In the cooking chamber variable type microwave oven according to the present invention, a cabinet 100 is formed in a predetermined space, and an inner case 102 is installed on an inner wall thereof to form a cooking chamber 101, and the inner case 102 and the cabinet 100 are located between each other. A heating device 110 including a magnetron 112 installed in the cooking chamber 101 and a waveguide 114 for guiding microwaves emitted from the magnetron 112 into the cooking chamber, and the cabinet 100. Door 120 for opening and closing the cooking chamber 101 and opening / closing in the opening of the cabinet 100, and a predetermined space is formed inside the open door 120. A cover 130 for communicating with the cooking chamber 101, an auxiliary cover 160 installed to overlap the cover and sliding out of the cover when the cover is opened outside the cooking chamber to extend the cooking chamber; An offset means 140 installed at an edge of the air 120 to allow the lost microwaves to flow between the cover 130 and the auxiliary cover 160 and the door 120 to be extinguished, and the door 120 and the cabinet ( It is installed between the 100 is configured to include a deflection prevention means 150 to maintain the horizontal in the state in which the door 120 is open.

Here, the cabinet 100, bar to minimize the space required for microwave installation, is formed to form a minimum space that the heating device 110 and the cover 130 can be installed, the cabinet 100 The opening is formed in the front surface, and the stopper 104 is formed at the upper end and both ends of the opening to restrain the rotation of the cover 130 is extended to prevent the cover 130 from leaving the cabinet 100 The cooking chamber 101 can be safely maintained.

In addition, a heating device 110 is installed in a space between the cabinet 100 and the inner case 102, and as shown in FIGS. 4 and 5, the heating device 110 is formed of the cabinet 100. It is installed on the inner wall of the bottom, a stirrer 116 is installed on the connection portion between the waveguide 114 and the inner case 102, and a motor 118 for rotating the stirrer 116 is installed. To make cooking more effective.

As illustrated in FIG. 5, the door 120 includes a door frame 124 coupled to a hinge 128 at an opening formed in the front of the cabinet 100, and a shielding plate installed on an inner wall of the door frame 124. Consisting of 126.

Here, the door frame 124, the rotation is limited by the deflection prevention means 150, when the door 120 is opened, the support portion 152 to be described later is mounted on the lower end of the opening of the cabinet 100 Since the door is constrained to correspond to the part 154, the door is not rotated by more than 90 degrees, and thus is disposed at the same height as the bottom surface of the cooking chamber 101.

In addition, the shielding plate 124 is provided with the offset means 140 at the edge thereof, so that the microwave leaked out between the cover 130 and the door 120 is introduced into the offset means 140 to disappear.

The cover 130, as shown in Figures 3 and 5, both sides are formed in the shape of an arc of an acute angle of 90 degrees or less, curved portions are connected to each other to form a front surface of the curved shape on both sides end of both sides Is composed of a cover frame 134 rotatably installed on the hinge portion of the door 120, and a shielding frame 136 is installed on the inner surface of the cover frame 134 to prevent the loss of microwaves.

As a result, when the cover 130 is rotated outside the opening of the cabinet 100, a sealed space of a predetermined space is formed, and microwaves emitted by the heating device 110 are prevented from leaking out of the cover 130. The effect that the cooking chamber 101 extends outside the opening is produced.

In addition, since the cover 130 has a stepped protrusion 132 protruding outward at a rear end thereof to correspond to the stopper 104 of the cabinet 100, the stepped when the cover 130 is rotated to the outside of the opening. 132 is caught by the stopper 104 to constrain the rotation of the cover 130 to prevent the cover from leaving the opening.

Here, the step 132, the shielding frame 136 is extended to the outside of the cover 130, bent so as to correspond to the stopper 104, the offset means 140 on the step 132 Since it is installed so that the microwave flowing out between the step 132 and the stopper 104 is extinguished, it is possible to perform a safe cooking operation.

Accordingly, when the door 120 is opened to extend the bottom surface of the cooking chamber 101 to the outside of the opening, and the cover 130 is rotated outward to be seated on the upper surface of the door 120, the cooking chamber 101 may be cabinetd. Since it extends outside the opening of the 100, it is possible to ensure a sufficient space required for cooking.

The cover 130, as shown in Figure 5 is formed in a circular arc shape of acute angle of 90 degrees or less as shown in Figure 5, the cover 130 because it is installed so as to be superimposed while sliding the secondary cover 160 therein When the cover 100 is inserted into the cabinet 100, the auxiliary cover 160 slides into the cover 130 and overlaps, thereby minimizing the space occupied by the cover 130 and the auxiliary cover 160 in the cabinet 100. The size of 100 can be further miniaturized.

In addition, the cover 130, as shown in Figure 6, the lower end of the cover frame 134 and the shielding frame 136 is opened so that the auxiliary cover 160 is installed so that it can be sunk, The auxiliary cover 160 is formed in an arc shape having both sides of an acute angle of 90 degrees or less, and curved portions of both sides are connected to each other to form a curved front part, and ends of both sides of the hinge 120 of the door 120 are formed. The auxiliary frame 162 is rotatably installed in the cover 130 and overlaps the inside of the cover 130, and a shielding panel 164 installed on the inner surface of the auxiliary frame 162 is included.

In addition, the auxiliary frame 162 and the shielding panel 164 are opened at an upper end thereof and are alternately inserted into the lower ends of the cover frame 134 and the shielding frame 136, thereby rotating the auxiliary cover 160 upward. The auxiliary frame 162 slides along the inner wall of the cover frame 134 and is inserted into the cover 130, and the shielding panel 164 slides along the inner wall of the shielding frame 136 to cover the inside of the cover 130. The cover 130 and the subsidiary cover 160 overlap with each other.

As a result, the side surfaces of the cover 130 and the auxiliary cover 160 form an arc shape of 1/8 circle, thereby minimizing the volume.

In addition, the cooking chamber variable microwave oven according to the present invention is installed between the cover 130 and the auxiliary cover 160, the sealing means for the cover 130 and the auxiliary cover 160 to be in close contact when the cover 130 ( 170 is further included, the sealing means 170, the first locking portion 172 and the first locking portion 172, the shielding frame 136 is bent to the outside and the first locking portion 172 A second locking portion 174 formed by bending an end portion of the shielding panel 164 inward is included.

Thus, when the auxiliary cover 160 slides outside the cover 130, the shielding panel 164 slides downward along the inner wall of the shielding frame 136, and when the rotation of the auxiliary cover 160 is completed, the second cover 160. The cover 130 and the auxiliary cover 160 are in close contact with each other while the locking portion 174 is inserted into the first locking portion 172, thereby preventing the loss of microwaves.

As shown in FIGS. 7 and 8, the offset means 140 includes a choke portion 142 formed at an edge of the shielding plate 126 and the shielding frame 136 to cancel microwaves, and the choke portion. The cover 144 inserted into the 142 is configured to include the choke portion 142, as shown in FIG. 10, the ends of the shielding plate 126 and the shielding frame are bent inward a plurality of times. It is formed to form a groove portion, a plurality of the plurality is formed continuously while maintaining a constant interval along the edge of the shielding plate 126, an opening of a predetermined size is formed in the inner surface direction of the shielding plate 126 is the cover 144 Is inserted.

The cover 144 is formed in a rectangular band shape corresponding to the choke portion 142, the cross-sectional shape is formed in a '∩' shape so that one end is inserted into the opening of the choke portion 142, the other Since the side end portion is inserted between the choke portion 142 and the door frame 124 and is mounted to the door frame 124 and the shielding plate 126, foreign matters may be prevented from flowing into the choke portion 142. .

Of course, the cover 144 installed on the cover 130 is formed in the same shape as the cover 144 installed on the door 120, one end of the cover 144 as shown in FIG. The choke part 142 is inserted into the opening of the choke part 142, and the other end is inserted between the choke part 142 and the cover frame 134 so as to be mounted to the cover frame 134 and the shielding frame 136. ) Foreign material can be prevented from entering inside.

9, the deflection preventing unit 150 includes a support part 152 formed by extending a lower end of the door 120 downward, and an opening of the cabinet 100 to correspond to the support part 152. It is configured to include a seating portion 154 formed by bending the lower end inward.

Here, the support portion 152, the offset means 140 is installed on the inner wall, the shield plate 126 constituting the support portion 152 is bent a number of times to form the choke portion 142, the choke portion The cover 144 is inserted between the 142 and the door frame 124.

Looking at the operation of the cooking chamber variable-type microwave oven according to the present invention configured as described above are as follows.

First, when cooking small food, open the door 120, store the cooking material in the cooking chamber 101, close the door 120 to seal the cooking chamber, and then drive the heating device 110 to cook. Can be done.

At this time, the interior of the cooking chamber 101 is sealed by the locking device between the door 120 and the opening, as in a conventional microwave oven, and the door 120 and the cabinet (by the offset means 140 installed on the shield plate 126). The microwaves can be prevented from leaking into the gaps between 100 and the safe cooking operation can be performed.

In addition, when cooking the bulky food in comparison with the existing cooking chamber 101, the door 120 is opened to extend the bottom surface of the cooking chamber 101, and the upper surface and the cooking chamber 101 of the door 120. After storing the cooking material over the bottom surface of the cover 130 is rotated to the outside of the opening.

At this time, the auxiliary cover 160, the auxiliary frame 162 and the shielding panel 164 slides along the inner wall of the cover frame 134 and the shielding frame 136 of the cover 130, the lower side of the cover 130 To extend the cooking chamber 101, the second locking portion 174 is inserted into the first locking portion 172, the cover 130 and the auxiliary cover 160 is in close contact with each other to form a robust cooking chamber 101. Can be.

Subsequently, when the auxiliary cover 160 is brought into close contact with the upper surface of the door 120, the cooking chamber is expanded and the cooking material is stored in the sealed cooking chamber. Subsequently, when the heating apparatus 110 is driven, microwaves are irradiated from the magnetron 112, and the microwaves are injected into the cooking chamber 101 along the waveguide 114. The stirrer 116 and the motor ( 118) more effectively evenly sprayed on each part of the cooking ingredients to cook.

In this case, the door 120 may maintain the plane of the same height as the bottom surface of the cooking chamber 101 by the deflection prevention means 150 formed at the lower front, the cover 130, the stepped end formed at the rear end ( Since the cover 130 is prevented from being separated out of the opening by the 132, the extended cooking chamber 101 may be safely maintained to perform effective cooking.

In addition, the cover 130, as shown in Figure 8, because the offset means 140 is installed on the step 132, the microwaves flowing between the cover 130 and the cabinet 100 to the choke portion 142. Inflow and extinguish

In addition, the offset means 140 installed at the edge of the door 120 to correspond to the outer end of the auxiliary cover 160 is installed to overlap a portion of the end of the auxiliary cover 160, as shown in FIG. The microwaves are easily introduced into the choke 142, and the microwaves are moved along the surface of the shield plate 126 by the characteristic of moving along the surface of the metal surface, and the extension of the shield plate. It is easily introduced into the choke portion 142 made of.

In addition, the offset means 140 installed in the support portion 152 of the deflection prevention means 150 also prevents the leakage of microwaves by introducing the microwaves lost between the lower end and the opening of the door 120 into the choke portion 142. Can be.

This prevents the outflow of microwaves and enables safe cooking.

In the cooking chamber variable type microwave oven according to the present invention configured as described above, the size of the cabinet is minimized, and the cover is extended to the outside of the cooking chamber so that the cooking chamber can be extended by the door and the cover when cooking. Since the function of the existing microwave oven is not driven and the cover is accommodated inside the cooking chamber, the space occupied in the kitchen is reduced, and thus space utilization is easy.

In addition, the present invention has a merit that the size of the cover for varying the cooking compartment can be varied, thereby minimizing the space occupied by the cover inside the cabinet so that the size of the cabinet can be further miniaturized, thereby doubling the space utilization effect. .

In addition, the present invention, there is an advantage that the product cost is reduced because the material cost required for manufacturing the cabinet and the inner case is reduced.

In addition, according to the present invention, an offsetting means consisting of a choke portion and a cover is provided between the cover and the door and between the cover and the cabinet so that the microwaves flowing out of the cooking compartment can be extinguished when the cooking chamber is extended, so that the cooking chamber is outside the cabinet. Even if it is extended to the outflow of the microwave can be prevented, there is an advantage that the sealing means is installed between the cover and the auxiliary cover to prevent the microwave outflow to the outside of the cooking chamber to perform a safe cooking operation.

In addition, the present invention is installed between the door and the cabinet to prevent the deflection of restraining the rotation of the door, so that the cooking chamber can be maintained firmly when extending the cooking chamber outside the cabinet, it is possible to perform a stable cooking operation, such Since the offset means is installed in the deflection prevention step, the effect of preventing the leakage of the microwave is also improved, and thus there is an advantage of effectively achieving more stable cooking.

Claims (8)

A cabinet forming a predetermined space and having an inner case installed on an inner wall thereof to form a cooking chamber; A heating device disposed between the inner case and the cabinet and configured to include a magnetron for irradiating microwaves to the cooking chamber and a waveguide for guiding microwaves irradiated from the magnetron into the cooking chamber; A door installed at an opening of the cabinet to open and close the cooking chamber; A cover which is installed in the opening of the cabinet so as to be sunk and has a predetermined space formed inside the opened door, and the space communicates with the cooking chamber; And a second cover installed to overlap the cover and extending from the cover when the cover protrudes out of the cooking compartment. The method of claim 1; The cabinet, the cooking chamber variable microwave oven, characterized in that the opening is formed in the front surface, the stopper for restraining the rotation of the cover at the upper end and both ends of the opening. The method of claim 1; The cover is formed in the shape of an arc having an acute angle of 90 degrees or less on both sides, the curved portion of the two sides are formed to be connected to each other to form a curved front portion, the ends of both sides rotatably installed on the hinge portion of the door And a shielding frame provided on an inner surface of the cover frame, wherein the shielding frame extends outside the cover and is bent to correspond to the stopper to form a step. The method of claim 1 or 3; The cover, the cooking chamber variable microwave oven, characterized in that the cover frame and the lower end of the shielding frame is opened so that the auxiliary frame is overlapped and installed. The method of claim 1; The auxiliary cover is formed in a circular arc shape with both sides of an acute angle of 90 degrees or less, and curved portions are connected to each other to form a curved front portion so that both ends are rotatably installed at the hinge portion of the door. And an auxiliary frame overlapping an inner side of the cover and a shielding panel provided on an inner side surface of the auxiliary frame. The method of claim 5; And the auxiliary frame and the shielding panel are opened at upper ends thereof and alternately inserted into the lower end of the cover frame and the shielding frame. The method of claim 1; And a sealing means installed between the cover and the auxiliary cover to close the cover and the auxiliary cover when the cover is opened. The method of claim 7; The sealing means may include a first catching portion formed by bending the shielding frame to the outside, and a second catching portion formed by bending an end portion of the shielding panel corresponding to the first catching portion in an inward direction. Adjustable microwave oven.

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