KR100627849B1 - Microwave oven of cooling door - Google Patents

Abstract

The present invention relates to a microwave oven in which an air circulation path for cooling an overheated door is formed, and more particularly, to a door cooling microwave oven that circulates air through a door to a cabinet exhaust port of a main body.

Description

Microwave Oven of cooling Door

1 is a cross-sectional view showing a cooling structure of a conventional microwave oven door.

2 is a cross-sectional view partially showing a cooling structure of another conventional microwave oven door.

Figure 3a is a perspective view showing the separation of the microwave oven door in accordance with a preferred embodiment of the present invention.

3B is a perspective view showing the choke of FIG. 3A from the back;

Figure 3c is a cross-sectional view of the microwave oven incorporating the door of Figure 3a.

Figure 4a is a perspective view of a door frame according to another embodiment of the present invention.

Figure 4b is a cross-sectional view of the microwave oven adopts the door frame of Figure 4a.

5 is an external perspective view of the microwave oven body according to the preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: door 110: door frame

111: door screen 112,116: see-through construction

113: stopper 115, 117: spacer

120: choke 120a: choke part

120b: Notch 121: Drawing side wall

123: chalk bottom 125: chalk exterior

127: chalk top surface 130: front panel

131: door panel 132: air inlet hole

136: front glass 141, 143; 146: communication hole

150: chalk cover 154: air outlet

160: positioning groove 170: rear glass

200: main body 201: opening

203: bending 210: cooking chamber

230: Battlefield S: Space (space)

Cited Reference 1: Korean Unexamined Patent Publication No. 15-5-0101115

Cited Reference 2: Korean Utility Model Model No. 19-050533-4

The present invention relates to a microwave oven in which an air circulation path for cooling an overheated door is formed, and more particularly, to a door cooling microwave oven that circulates air through a door to a cabinet exhaust port of a main body.

The door frame of the microwave oven door is made of metal, and the front glass is usually made of tempered glass or the like, and there is a fear of a user's image due to overheating during use.

In particular, in the case of a multifunctional microwave oven using a heater as an additional heating source, the overheating of the door may be serious.

As a conventional microwave oven door cooling structure for cooling the overheating of such a door, for example, those disclosed in the publications of Citation Document 1 (Korean Patent Publication No. 15-5001-65) and Citation Document 2 (Korean Utility Model Publication No. 19-055003-4) are disclosed. It is proposed.

As shown in FIG. 1, the microwave oven door of the reference 1 is provided with a mechanism storage space 11 in which a cooling fan 4, a magnetron 5, and a duct 6 are installed, a heater 7, and the like. A microwave oven main body portion 1 having a high inside portion 12 and an exhaust port 13 for discharging hot air therein; A door (2) installed in the front opening of the main body part (1) so as to be opened and closed to control the entrance and exit of the food selectively embedded in the inner portion (12); In constructing a microwave oven comprising an operation panel part 3 on which various operation switches and the like are installed, the front plates 111 and 131 of the mechanism storage space 11 and the exhaust port 13 and the inner side of the door 2 which are in contact therewith. Part of the plate 21 drills the intake holes 112 and 211 and the exhaust holes 132 and 212, respectively, so that a part of the wind generated from the cooling fan 4 passes through the space 23 of the door 2 to the exhaust port 13. Forced circulation

By the way, this door 2 lacks the structure of the door frame which blocks an electromagnetic wave.

On the other hand, the microwave oven door cooling structure of the reference 2, as shown in Figure 2, constitutes a rectangular cooking chamber and a drive chamber in which the cooling fan assembly is located, and communicated with the outside on one side top and side and bottom surface. In a microwave oven including a cabinet having a plurality of exhaust holes and a door positioned at the front of the cabinet to selectively seal the cooking chamber, the plurality of exhaust holes may be formed at one lower surface of the front surface of the cabinet Ca adjacent to the driving chamber. 20, and an exhaust hole 30 is formed in the lower surface of the door Do that corresponds to the exhaust hole 20 of the cabinet Ca so as to communicate with a space part therein. The air blown from the cooling fan assembly flows toward the inner side of the door Do through the exhaust hole 20 formed in the front side of the cabinet Ca, so that the inner front side of the door Do and the inner space thereof are formed.It is one to each.

According to this configuration, it is possible to properly cool the inside of the cabinet, and in particular, it is possible to prevent sudden temperature rise and moisture buildup of the door through a plurality of exhaust holes formed in the front rear side of the cabinet and the inner bottom of the door.

By the way, the door frame and the front glass 43 is a door having a structure significantly spaced apart from each other, this space is to increase the thickness of the door.

In addition, as a door having a structure in which the door frame and the front glass are substantially spaced apart from each other, this separation space increases the thickness of the door.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a microwave oven for cooling the door, which can easily form a compact air circulation passage.

Microwave oven of the present invention for achieving the above object is a door frame having a choke bent at the edge portion, a front panel coupled to the front of the door frame, and the door consisting of a choke cover to cover the choke; It includes a main body consisting of a cooking chamber and the electric compartment that is opened and closed by the door, the lower front panel is formed with an air inlet hole in which air is introduced, the opening of the gas plate front of the cooking chamber is formed in communication with the exhaust port of the main body is formed The upper side and the lower side of the choke is formed with an upper communication hole and a lower communication hole, the upper choke cover is formed with an air outlet hole,

The air introduced into the air inlet hole is passed through the air outlet hole through the gap between the communication hole, the front panel and the door frame, and enters the opening and exits to the atmosphere through the exhaust port.

According to this structure, a compact air circulation path can be formed easily.

In the above-described configuration, the opening is preferably formed by bending after cutting in the form of a cantilever.

In addition, it is preferable that a positioning groove is formed in the choke, and a positioning protrusion corresponding to the positioning groove is formed in the front panel.

The choke may be bent into a drawing side wall, a choke bottom bent upward from the drawing side wall, a choke outer surface bent from the choke bottom in a direction corresponding to the drawing side wall, and a choke top surface bent downward from the choke outer surface. And a plurality of cutouts formed between the choke portion and the choke outer surface and the choke top surface, wherein the positioning groove includes: a first groove along an edge of the choke bottom surface and the choke outer surface; It is preferably formed with a second groove formed on the upper surface of the choke outer surface at right angles to the.

In addition, the gap is preferably formed by a spacer molded integrally to the door frame.

The front panel may include a door panel coupled to the door frame, and a front glass installed at the door panel to form the gap, and a plurality of see-through holes are formed in the door frame corresponding to the front glass. A rear glass for sealing the see-through hole is installed on the rear surface of the door frame, and see-through holes are further formed in the spacer.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

3A is a perspective view illustrating a microwave oven door according to a preferred embodiment of the present invention, FIG. 3B is a perspective view showing the choke of FIG. 3A from the back, and FIG. 3C is a cross-sectional view of FIG. 3A.

As shown in FIGS. 3A to 3C and 5, the microwave oven of the present embodiment includes a main body 200 including a cooking chamber 210 and a full-length chamber 230, and a door that opens and closes the cooking chamber 210. 100).

The microwave oven door 100 includes a door frame 110 and a front panel 130 coupled to the front surface of the door frame 110.

The door frame 110 is a metal material, and serves as a skeleton (installation of a hinge or a hook, etc.) of the door assembly.

The front panel 130 includes a door panel 131 coupled to the door frame 110 and a front glass 136 through which the cooking chamber 210 can be viewed through the center of the door panel 131. The front glass 136 is usually made of a material of tempered glass.

The air inlet hole 132 is formed below the door panel 131.

On the other hand, keeping the door frame 110 and the front glass 136 as close as possible can simplify the support structure while reducing the overall thickness of the door 100. In addition, the choke 120 is preferably formed at the edge of the door frame 110 to block the leakage of electromagnetic waves.

To this end, as shown in Figure 3b, the bent choke 120 is formed in the edge portion of the door frame 110, the lower choke communication holes communicating with the air inlet hole 132 (141; 143) In the upper choke, a communication hole 146 communicating with the air outlet hole 154 described later is formed.

In addition, the choke cover 150 covering the choke 120 is coupled to the rear surface of the door frame 110. The choke cover 150 has an air outlet hole 154 communicating with the communication hole 146.

The air outlet hole 154 is disposed at a position facing the opening 201 formed in the cabinet front plate upper surface.

The opening 201 is preferably formed by cutting the cantilever into a cantilever shape. The bent piece 203 functions as a guide inclination plate for guiding the air exiting the air outlet hole 154 to the exhaust port.

By the above-described configuration of the communication holes 141 and 146, the door frame 110 and the front glass 136 may be brought into close contact with each other.

The choke 120 corresponds to the drawing side wall 121 bent at the door screen 111, the choke bottom 123 bent upward at the drawing side wall 121, and the drawing side wall at the choke bottom 123. The choke outer surface 125 bent in the direction to be, and the choke portion 120a formed by the choke upper surface 127 bent downward from the choke outer surface 125, the choke outer surface 125 and the choke upper surface ( It consists of a plurality of notches 120b formed between 127.

The lower communication holes 141 and 143 are formed in the lower drawing side wall 121a and the choke outer surface 125a, respectively. The upper communication holes 146 are formed in the upper drawing side walls 121b, respectively.

The communication holes 141 and 146 may be punched to form the choke 120 after pressing, for example, when the entire door frame 110 is pressed, and thus manufacturing is easy.

By such a configuration, when the outside air is introduced into the air inlet hole 132, the lower communication hole 141, 143, the gap (S), the upper communication hole 146 through the air outlet hole 154 After flowing through the opening 201, the gas exits to an exhaust port (not shown) of the main body.

At this time, in order to increase the air flow efficiency to slightly increase the spacing (S), it is preferably formed by a spacer integrally molded in the door frame.

The spacer is preferably implemented with a protrusion 115 protruding from the door screen 111.

In addition, it is preferable that the projection 115 further includes a hollow see-through hole 116. The protrusion 115 and the see-through hole 116 may be simply implemented by drawing until punched.

This, a plurality of see-through holes 112 are formed in the door screen 111 of the door frame 110. The cooking chamber 210 can be seen from the outside through the see-through hole 112 and the front glass 136. The front glass 136 serves as a sealing function of the see-through holes 112 and 116.

As described above, when the projection 115 with the through-hole 116 is implemented, while forming the gap (S), it is convenient to give an overall feeling wide when confirmed from the outside.

In addition, it is preferable that a rear glass 170 for sealing the see-through holes 112 and 116 is installed on the rear surface of the door screen 111.

Meanwhile, as illustrated in FIGS. 4A and 4B, the spacer 117 may be formed in a stepped shape on the edge of the door screen 111. At this time, there is little need to form a see-through hole.

On the other hand, it is preferable that a positioning groove 160 is formed in the choke 120, and a positioning protrusion (not shown) corresponding to the positioning groove 160 is formed in the door panel 131.

That is, the positioning groove 160 includes a first groove 161 along the edge of the choke bottom surface 123 and the choke outer surface 125, and an upper surface of the choke outer surface 125 at a right angle with the first groove 161. It is formed of a second groove 163 formed in the. Of course, the positioning protrusion (not shown) includes a first protrusion (not shown) corresponding to the first groove 161 and a second protrusion (not shown) corresponding to the second groove 163. It is.

By the positioning groove 160 and the positioning projection, the position of the door frame 110 can be securely fixed, and assembling can be improved.

In addition, it is preferable that the stopper 113 is installed so that the door press 110 does not closely adhere to the front glass 136. It will be apparent that the stopper 113 may also be provided with the positioning projection.

The microwave oven for door cooling according to the present invention is not limited to the above-described embodiments, and may be variously modified and implemented within the range permitted by the technical idea of the present invention.

As is apparent from the above description, the microwave oven for door cooling according to the present invention has the following effects.

First, the air flowing into the air inlet hole of the front panel passes through the communication hole and the gap between the front panel and the door frame, and then enters the opening of the main body through the air outlet hole of the choke cover and exits the atmosphere through the exhaust port. It is possible to easily implement the exhaust port and the air circulation passage of the main body while blocking. In addition, since the gap between the door frame and the front panel can be given as a gap, the thickness of the door can be considerably reduced and the support structure can be simplified.

Second, the opening may be formed by cutting the cantilever into a bent shape, thereby guiding air to the exhaust port along the inclined surface of the bent piece.

Third, a positioning groove is formed in the choke, and a positioning protrusion corresponding to the positioning groove is formed in the front panel, thereby improving assembly.

Fourth, the choke is bent into a drawing side wall, the choke bottom bent upward from the drawing side wall, the choke outer surface bent in the direction corresponding to the drawing side wall from the choke bottom, and the choke top surface bent downward from the choke outer surface And a plurality of chokes, and a plurality of cutouts formed between the choke outer surface and the choke top surface, wherein the positioning groove comprises: a first groove along an edge of the choke bottom surface and the choke outer surface; By forming the second groove formed on the upper surface of the choke outer surface at a right angle, positioning can be performed more reliably.

Fifth, the gap is formed by a spacer molded integrally to the door frame, it can be manufactured together when forming the door frame can improve the productivity.

Sixth, the front panel is composed of a door panel coupled to the door frame and a front glass installed on the door panel to form the gap, a plurality of see-through holes are formed in the door frame corresponding to the front glass, A rear glass sealing the see-through hole is installed on the rear surface of the door frame, and the see-through hole is formed in the spacer, so that the spacer and the see-through hole can be easily realized by plastic processing such as drawing and punching, and inside the cooking chamber by the spacer. Can alleviate the perspective limitations.

Claims (6)

A door comprising a door frame having a choke bent at an edge portion, a front panel coupled to the front of the door frame, and a choke cover covering the choke; Including a main body consisting of a cooking chamber and the electric compartment opened and closed by the door, The lower front panel is formed with an air inlet hole through which air flows, An opening communicating with an exhaust port of the main body is formed in an upper surface of the cavity front plate of the cooking chamber; Upper and lower communication holes are formed at the upper side and the lower side of the choke, An air outlet hole is formed in the upper choke cover, The air introduced into the air inlet hole is passed through the air outlet hole through the gap between the communication hole, the front panel and the door frame and enters the opening and exits to the atmosphere through the exhaust port. Microwave. The method of claim 1, The opening is a microwave oven for cooling the door, characterized in that formed by bending after cutting in the form of cantilever. The method according to claim 1 or 2, Positioning grooves are formed in the choke, The front panel is a microwave oven for door cooling, characterized in that the positioning projection corresponding to the positioning groove is formed. The method of claim 3, The choke is formed of a drawing side wall, a choke bottom bent upward from the drawing side wall, a choke outer surface bent from the choke bottom in a direction corresponding to the drawing side wall, and a plurality of choke bent downwards from the choke outer surface. It consists of a choke portion and a plurality of cutouts formed between the choke outer surface and the choke top surface, The positioning groove comprises a first groove along the edge of the choke bottom surface and the choke outer surface, and a second groove formed on the upper surface of the choke outer surface at right angles to the first groove. . The method of claim 4, wherein The gap is a door cooling microwave oven, characterized in that formed by a spacer molded integrally to the door frame. The method of claim 5, The front panel includes a door panel coupled to the door frame, and a front glass installed on the door panel to form the gap. A plurality of see-through holes are formed in the door frame corresponding to the front glass, The rear glass of the door frame is installed on the back of the door frame, The microwave oven for door cooling, characterized in that the see-through hole is further formed in the spacer.

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