KR0126722Y1 - Heater fixing apparatus of microwave oven - Google Patents

Abstract

The present invention relates to a heater fixing apparatus of the microwave oven, the purpose is to simplify the fixing structure of the heater to reduce the convenience of assembly and manufacturing cost.

The present invention is a cabinet equipped with an electrical equipment compartment and an electrical equipment compartment in which electrical equipment is installed, and a cooking compartment in which food is cooked, the food compartment is installed in the interior of the cooking chamber, one side of which has a heater protruding into the electrical equipment compartment through the wall, and a terminal portion provided in the protruding part. In the microwave oven, a terminal unit is inserted into the electrical equipment room to install a bracket for rotatably supporting the heater, and the bracket includes a protruding part that protrudes laterally so as to limit rotation when the heater is rotated. Between the terminal portion and the bracket is a heat-resistant resin to reduce the friction during the rotation of the heater and the prevention member for preventing external leakage of high frequency leakage into the gap between the protruding terminal portion and the wall.

Description

Microwave heater fixing device

The present invention relates to a microwave oven, in particular to a heater fixing device of a microwave oven that can reduce the convenience and manufacturing cost of manufacturing by simply and simply fixing a heater fixed to achieve a horizontal and vertical direction on the upper side of the cooking chamber. It is about.

In general, the microwave is cooking food using a high frequency, Figure 1 is a view showing the internal configuration of such a microwave.

As shown in the drawing, the cabinet 1 is provided with a cooking chamber 2 in which food is stored and cooked, and a side of the cooking chamber 2 is equipped with a component room for accommodating high frequency radiation into the cooking chamber 2 ( 3) is installed.

A door 2a is installed at the front of the cooking chamber 2 to open and close the cooking chamber 2. In addition, the electronics compartment 3 is provided with a magnetron 3a for irradiating high frequency and a high voltage transformer 3b for supplying a high voltage to the magnetron 3a. A cooling fan for cooling the parts is provided at the rear of the electronics compartment 3. (3c) is installed.

In addition, a heater 4 is installed above the cooking chamber 2 to provide heat to the cooking chamber 2 so that the food is cooked by the heat. The terminal portion 5 is formed at the right end of the heater 4 so that electric power can be supplied to the heater 4. The terminal part 5 is installed to protrude to the outside of the right side wall 2b of the cooking chamber 2, that is, the electrical equipment compartment 3, so that an electric wire (not shown) can be connected to the terminal part 5. A circular hole (unsigned) is formed in 2b). And the fixing unit 6 is installed in the terminal portion 5 protruding into the electrical equipment room 3 through the circular hole so that the heater 4 can be rotated in a horizontal state or a vertical state to change its position.

As shown in FIG. 2, the heater fixing device is provided with a bracket 7 fixed to the rear wall of the electrical equipment room 3 by a screw 9b on the outside of the right side wall 2b to support the terminal portion 5. . In addition, between the terminal portion 5 and the bracket 7, a heat-resistant resin 8a for attenuating friction noise during the rotation of the heater 4 and a gasket 8b for preventing high frequency leakage in the cooking chamber 2 and these are supported. An earth bracket 8d for limiting the rotational width of the flange ring 8c and the heater 4 is installed. On the other hand, a screw 9a is fastened between the earth bracket 8d and the terminal portion 95 to fix the parts provided therebetween.

As described above, the conventional heater fixing device includes a ground bracket 8d for limiting the rotational width of the heater 4, a heat resistant resin 8a for reducing rotational friction of the heater 4, and a gasket for preventing leakage of high frequency ( 8b) and the bracket 7 for fixing them are composed of different members, and the structure thereof is complicated, and the bracket 7 is fixed to the rear wall of the electrical equipment compartment 3 with screws 9b. The assembly process of (6) was difficult and the manufacturing cost was high because there were many parts.

The present invention is to solve the above problems, an object of the present invention is to provide a heater fixing apparatus of a microwave oven that can reduce the convenience of assembly and manufacturing cost by simplifying the fixing structure of the heater.

1 is a plan sectional view showing the internal structure of a conventional microwave oven.

FIG. 2 is an exploded perspective view of the heater fixing device shown in FIG.

3 is a plan sectional view of the microwave oven showing the overall structure of the microwave oven employing the heater fixing device according to the present invention.

4 is a cross-sectional view taken along line IV-IV of FIG. 3 showing a structure of circulating hot air of the microwave oven to which the present invention is adopted.

5 is an exploded perspective view of the heater fixing structure shown in FIG.

Figure 6 (a), (b) and (c) is a view showing the operating state of the heater fixing apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

10: cavity 20: cooking chamber

21: right wall 30: electrical equipment room

31: magnetron 32: high voltage transformer

33: cooling fan 41: circulation fan

42: suction port 43: discharge port

44: duct 45: motor

46: rotating shaft 47: cooling fan

50: heater 51: terminal

60: protective cover 81: bracket

82: limit projection 83: locking groove

84: heat resistant resin 85: prevention member

86: screw

In order to achieve the above object, the present invention provides a cabinet having a cooking compartment in which an electrical equipment is installed and a cooking compartment in which food is cooked by partitioning the electrical equipment room and a wall, which is installed inside the cooking chamber, one side of which passes through the wall to the electrical equipment room. A microwave oven having a protruding heater and a terminal portion provided on the protruding portion, wherein the electrical component compartment is provided with a bracket for inserting and installing the terminal portion to rotatably support the heater, and the bracket is perpendicular to the heater. In order to limit the rotation in the rotation to each other provided with two restriction projections formed in the direction perpendicular to each other and the engaging groove formed in the restriction projections, between the terminal portion and the bracket inserted into the bracket and the friction during the rotation of the heater Resistant heat-resistant resin and the protruding terminal portion It characterized in that the prevention member for preventing external leakage of high frequency from leaking into the gap between the walls is installed.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3 and 4 is a view showing the internal configuration of a microwave oven employing a heater fixing device according to the present invention. As shown in the drawing, the cabinet 10 is provided with a cooking chamber 20 in which food is stored and cooked, and an electrical equipment compartment 30 in which components for irradiating high frequency to the cooking chamber 20 are accommodated and installed.

The front door 11 of the cooking chamber 20 is installed to open and close the cooking chamber 20. The electrical equipment room 30 includes a magnetron 31 for irradiating high frequency to the cooking chamber 20 and a high voltage transformer 32 for supplying a high voltage to the magnetron 31, a high voltage capacitor (not shown), and a high voltage diode (not shown). Is installed. A cooling fan 33 for cooling the parts is provided at the rear of the electrical equipment compartment 30. And the rear of the cooking chamber 20 is provided with a structure for circulating the hot goods.

First, a heater 50 that generates heat is installed at an upper portion of the cooking chamber 30, and a circulation fan 33 for forcibly circulating heat generated by the heater 50 is installed at the rear of the cooking chamber 30.

The installation structure of the circulation fan 33 will be described in detail. First, the inlet 42 and the discharge port 43 communicating with the cooking chamber 30 are provided at the lower side and the upper side of the cooking chamber 30, respectively. The duct 44 corresponding to the suction port 42 is provided with a circulation fan 41 for forcibly circulating the air in the cooking chamber 20. A motor 45 for driving the circulation fan 41 is installed at the rear of the circulation fan 41, and a cooling fan 47 for cooling the motor 45 is installed at the rotation shaft 46 of the motor 45. . And the protective cover 60 is installed in a form that surrounds those exposed to the rear.

The heater 50 is coupled to the right wall 21 of the cooking chamber 20 so as to be rotatable vertically. That is, a terminal portion 51 for supplying power to the heater 50 is installed at the right end of the heater 50, which is connected to a circular hole (unsigned) formed in the right wall of the cooking chamber 20. It is installed to protrude to the inside of the electrical equipment compartment 30. In addition, the terminal unit 51 is provided with a fixing device 80 for supporting the heater 50 so as to be rotated between horizontal and vertical, so that the user before cooking when the heater 50 is rotated is inside the cooking chamber 20. 50 is rotated up and down by hand as appropriate for cooking and then cooked.

At this time, the heater 50 is fixed in the cooking position by the fixing device 80 is the position is adjusted while the terminal 51 is rotated along the circular hole (unsigned).

As shown in FIG. 5, the fixing device 80 is provided with a bracket 81 fastened to the terminal portion 51 of the heater 50 via a screw 86. The bracket 81 is provided in a plate shape and is provided close to the right side wall 21 of the cooking chamber 20, that is, the left side wall of the electrical equipment chamber 30. And between the bracket 81 and the right wall 21, the heat-resistant resin 84 is fitted to the terminal portion 51 to attenuate the friction generated during the rotation of the heater 50, the heat-resistant resin 84 and the bracket 81 And a prevention member 85 disposed between the terminals and absorbing the high frequency leaked through the penetrating portion of the terminal part 51 to prevent external leakage. At this time, the heat-resistant resin 84 and the prevention member 85 is formed in a ring shape, the bracket 81 and the terminal portion 51 is a screw 86 is fastened between the prevention member 85 and the heat-resistant resin ( 84).

At this time, the prevention member 85 is made of ferrite (ferrite) that can absorb the high frequency.

And the outer side of the bracket 81 is provided with a limiting portion spaced 90 °, this limiting portion consists of a limiting projection 82 protruding outward to limit the rotational width of the bracket 81 to limit the rotational width of the heater 50 do. And the end of the limiting projection 82 is formed with a locking groove 83 for fixing the horizontal position and the vertical position of the heater 50, this locking groove 83 is a desired of the limiting projection 82 It is preferably formed for operation.

Referring to the operation and effect of the microwave heater fixing device according to the present invention configured as described above are as follows.

First, I will explain the general operation of the microwave. When the power is applied, the high voltage transformer 32 or the like boosts the input voltage and supplies it to the magnetron 31. The magnetron 31, which has been subjected to high pressure, irradiates high frequency into the cooking chamber 20 to cook food.

We will continue to explain how to cook food using hot air. When power is applied to the heater 50, the heater 50 generates high heat. The generated heat cooks food while circulating in the cooking chamber 20 by the blowing fan 41.

Meanwhile, the heater 50 adjusts the position of the heater 50 by manipulating the heater 50 located inside the cooking chamber 20 in a horizontal or vertical position by hand before cooking according to the state of the food. At this time, the rotation of the heater 50 moves as the terminal portion 51 rotates through a circular hole (not shown). When the position of the heater 50 is determined, the heater is restricted by the restricting protrusion 82 and the locking groove 83. 50 is supported. And the friction generated during the vertical rotation of the heater 50 is attenuated by the heat-resistant resin (84). In addition, the high frequency leakage to the penetrating portion of the heater 50 is absorbed by the prevention member 85 is extinguished.

Hereinafter, the operation of the heater fixing device 80 will be described in more detail with reference to FIG. 6.

As shown in (a) of FIG. 6, when the heater 50 is located above the cooking chamber 20, each of the restricting protrusions 82 separated by 90 ° is supported on the ceiling of the electrical equipment room 30 and the other end thereof. It is supported by the rear wall of this electrical equipment compartment 30. In addition, when the worker rotates the heater 50, the worker pulls the heater 50 inside the cooking chamber 20 downward by using a work tool or hand, and the restricting protrusion 82 of the fixing device 80 is as shown in (b). Each wall is separated from the wall. At this time, the limiting protrusion 82 is partially folded outwardly, and the locking groove 83 exerts a predetermined elastic force. .

When the heater 50 is positioned at the rear wall of the cooking chamber 20 as in (c) by the continuous rotation, the limiting projection 82 supported on the rear wall of the electric chamber 30 is supported on the ceiling of the electric chamber 30. The heater 50 is fixed. At this time, since the heater 50 faces the underground direction, it maintains a stable installation state.

As described in detail above, the heater fixing device of the microwave oven according to the present invention, while simplifying the structure, reducing the friction of the rotation position and rotation of the heater and prevent the leakage of high frequency, the assembly process is easy It is easy to manufacture and there is an advantage that can reduce the manufacturing cost of the parts of the reduction of the manufacturing cost by reducing the number of parts.

Claims (1)

The cabinet 10 is provided in the electrical equipment compartment 30 is installed in the electrical equipment compartment 30 and the cooking compartment 20 partitioned by the electrical equipment compartment 30 and the wall 21, the food is cooked, the interior of the cooking chamber 20 In the microwave oven having one side penetrates through the wall 21 and protrudes into the electrical equipment compartment 30, and a terminal portion 51 provided on the protruding portion, the electronic component compartment 30 has the terminal portion ( 51 is inserted to install a bracket 81 which rotatably supports and supports the heater 50, and the bracket 81 is mutually limited so as to limit rotation during rotation of the heater 50 in the vertical direction. Two restricting protrusions 82 protruding in a right angle and a locking groove 83 formed in the restricting protrusion 82 are provided, and the terminal portion 51 and the bracket 81 inserted into the bracket 81 are installed. Between the heat-resistant resin 84 to attenuate friction during rotation of the heater 50 And a preventing member (85) for preventing external leakage of high frequency leaking into a gap between the protruding terminal portion (51) and the wall (21).