KR200349499Y1 - Synchronous motor radiant heat structure a microwave - Google Patents

Abstract

The present invention relates to a heat dissipation structure of a synchronous motor for a microwave oven. According to the present invention, in the microwave synchronous motor built as a housing, a plurality of first heat dissipation holes 320 are formed at equal intervals on the outer periphery of the vertical portion 300 of the housing 200, and the housing 200 is provided. The second heat dissipation hole 420 is formed in the edge area of the lower surface 400 of the external air.

According to the present invention configured as described above, according to the present invention described above, the heat radiation is improved by circulating through the first heat radiation hole by forming the first heat radiation hole in the vertical part of the synchronous motor housing of the microwave oven. Accordingly, the second heat dissipation hole is formed in the lower portion of the synchronous motor housing even when the wind direction switching lever is not installed as in the related art, thereby circulating with each other to provide excellent heat dissipation.

Description

Heat dissipation structure of synchronous motor for microwave oven {SYNCHRONOUS MOTOR RADIANT HEAT STRUCTURE A MICROWAVE}

The present invention relates to a heat dissipation structure of a synchronous motor for a microwave oven. In particular, a heat dissipation hole is formed in a housing of a synchronous motor that rotates a rotary dish of a microwave oven, and heat is easily dissipated inside. By improving the heat dissipation to improve the quality of the product.

In general, the microwave oven is to cook the food by dielectric heating using frictional heat caused by the translational movement of the water molecules contained in the food through the ultra-high frequency generated from the magnetron (magnetron). At this time, the inside and outside of the food is made at the same time.

The conventional microwave oven will be described with reference to the accompanying drawings as follows.

First, as shown in FIG. 1, the cooking chamber 2 of the microwave oven is provided inside the main body 1 so as to prevent the heat source applied to the food from leaking out to the outside, so that food can be placed thereon, and the magnetron is located at the lower right side of the cooking chamber 2. A driving high voltage transformer 3 is provided.

In addition, the magnetron 4 is mounted on the upper portion of the high voltage transformer 3 to receive the high voltage from the high voltage transformer 3 to generate the ultra high frequency, and the upper portion of the magnetron 4 generates the ultra high frequency generated by the magnetron 4 at the cooking chamber 2. Waveguide 6 is provided for guiding the inside.

On the other hand, the lower portion of the cooking chamber (2) is equipped with a rotary plate (7) to rotate the food inside the cooking chamber (2) when the magnetron (4) is driven so that the food is cooked evenly, the lower plate of the rotary plate (7) The rotating plate roller 8 which supports) is mounted.

At the lower end of the rotary plate roller 8, a weight sensor 9 for sensing the weight of the food placed on the rotary plate 7 is mounted via a drive shaft, and at the lower left side of the cooking chamber 2, the rotary plate 7 is provided. The first high frequency sensor 10 which detects the high frequency output of the inside of the cooking chamber 2 which permeated the food according to the kind, weight, and heating state of the food put on it is mounted.

In addition, a second high frequency sensor 11 for detecting a high frequency output in the waveguide 6 oscillated by the magnetron 4 is mounted on the top of the waveguide 6, and the power that the rotary plate roller 8 rotates is synchronized. It is provided by a gear train (not shown) by the drive of the motor 12.

In addition, a fan 13 is installed at a portion corresponding to the magnetron 4 in the main body 1 to cool the magnetron 4, the high voltage transformer 3, the synchronous motor 12, and the like. At this time, it is preferable to install the wind direction switching lever 14 to cool the synchronous motor 12.

Meanwhile, as shown in FIG. 2, the DC power supply unit 20 converts the power supply voltage of the commercial AC power supplied from the AC power input terminal (not shown) into a DC voltage of a level necessary for driving the microwave, and outputs the cooking. The input means 30 has a function key on the control panel to input various cooking functions desired by the user.

In addition, the weight detecting means 40 is a weight sensor 9 for detecting the weight of the food placed in the cooking chamber 2 to determine the load change in the cooking chamber 2, and the first high frequency detecting means 50 is It is a first high frequency sensor 10 which detects the high frequency output in the cooking chamber 2 which permeated food according to the kind, weight, and heating state of the food placed in the cooking chamber 2.

Further, the second high frequency detection means 60 is a second high frequency sensor 11 which detects a high frequency output in the waveguide 6 oscillated by the magnetron 4.

In addition, the control unit 70 initializes the microwave oven by receiving the DC voltage output from the DC power supply unit 20 and simultaneously performs the overall cooking operation of the microwave oven according to the button signal input by the cooking input unit 30. A microcomputer to control may be exemplified, and the control means 70 may include weight data of the food detected by the weight sensing means 40 and a high frequency output amount in the cooking chamber 2 detected by the first high frequency detecting means 50. And controlling the high frequency output of the microwave oven according to the high frequency output amount in the waveguide 6 detected by the second high frequency detecting means 60 and controlling the synchronous motor driving means 80 for driving the synchronous motor 12. .

Meanwhile, the cooking input means 30 for providing control data to the control means 70 and the display means 90 displayed according to the output of the control means 70 are installed together with the control panel (not shown) of the microwave oven. do.

3 is a plan view of the synchronous motor of FIG. 1, in which inlet air from the fan 13 is reflected by the wind direction switching lever 14 to cool the synchronous motor 12.

In the conventional microwave oven, the inflow air from the fan 13 is applied to the magnetron 4 and the high-pressure transformer 3 to perform a cooling function, and the wind direction is synchronized by the wind direction switching lever 14. It is applied to 12 to cool the synchronous motor 12.

However, since the microwave oven has a structure in which the gear structure and the drive winding of the synchronous motor are sealed inside the housing, the internal heat is increased due to the excessive heat generation, thereby reducing the rotational torque. In order to improve the heat resistance, some manufacturers use special motors with excellent heat resistance, but this requires a lot of costs due to the purchase of special motors, and causes a problem in the common use of parts. Various problems such as the cost increase due to pressing or additional welding work are generated.

The present invention was devised to solve such a conventional problem, and the present invention provides a heat dissipation structure of a synchronous motor for a microwave which improves heat dissipation by drilling a plurality of heat dissipation holes in the synchronous motor housing of the microwave. There is a purpose.

The technical problem of the present invention for achieving the above object is, in the synchronous motor for a microwave oven built as a housing, a plurality of first heat radiation holes are formed at equal intervals on the outer periphery of the vertical portion of the housing, The second heat dissipation hole is formed in the lower edge region to circulate the outside air.

1 is a cross-sectional view showing a general microwave structure.

2 is a block diagram showing a control configuration of a general microwave oven.

3 is a plan view illustrating a synchronous motor portion of FIG.

4 is a front view of a synchronous motor applied to the present invention.

5 is a bottom view of a synchronous motor applied to the present invention.

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

100: synchronous motor 200: housing

300: vertical part 320,420: first and second heat radiation holes

400: lower surface

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

4 is a front view of the synchronous motor applied to the present invention, Figure 5 is a bottom view of the synchronous motor applied to the present invention.

As shown in Figures 4 and 5, the main component of the synchronous motor 100 used in the microwave oven according to the present invention, the gear train and the vertical portion 300 of the housing 200, the winding core, etc. The first heat dissipation hole 320 is formed, and the second heat dissipation hole 420 is formed on the lower surface 400 of the housing 200.

That is, a plurality of first heat dissipation holes 320 are formed on the outer periphery of the vertical part 300 of the housing 200 by maintaining equal intervals, and the edge area of the lower surface 400 of the housing 200 formed by maintaining concentric circles. A plurality of second heat radiation holes 420 are formed in the outside air is circulated.

Referring to the operating state of the present invention configured as described above, as shown in FIG. 1, the external air introduced by the fan 13 is introduced as an arrow, but is sprayed and distributed to the magnetron 4 and the synchronous motor 12.

At this time, the first heat dissipation hole 320 is formed in the vertical portion 300 of the housing of the synchronous motor 100 according to the present invention, and the external air is dispersed and introduced without collecting and supplying the external air to the wind direction switching lever 14. Cooling by itself is possible.

That is, as shown in FIG. 4, heat is radiated to the outside through the first heat dissipation hole 320 formed in the vertical part 300 of the housing 200, and external air introduced through the fan 13 is introduced. Cooling is naturally performed by flowing into the first heat dissipation hole 320.

That is, by forming the first heat dissipation hole 320 in the vertical portion 300 of the housing 200 according to the present invention, the heat dissipated from the inside does not remain in the housing and goes to the outside through the first heat dissipation hole 320. The heat dissipation improves the cooling function.

Meanwhile, as shown in FIG. 5, a plurality of second heat dissipation holes 420 are formed at the edge of the lower part 400 of the housing 200, so that the lower 400 of the lower heat dissipation holes 320 of the housing vertical part 300 are formed. External air is forcedly circulated to the second heat dissipation hole 420 to improve heat dissipation.

At the same time, some of the external air introduced through the fan 13 is circulated to the first heat dissipation hole 320 of the vertical part 300 through the second heat dissipation hole 420 of the lower part 400 in the fan 13. It is possible to perform a heat dissipation function fluidly in accordance with the flow of external air by the fan 13 is introduced.

Therefore, the microwave oven using the synchronous motor 100 of the present invention can be effectively dissipated internal radiant heat by its first and second heat dissipation holes 320 and 420 without using a separate wind direction conversion lever. In addition, the cool air is improved by circulating the air through the first and second heat dissipation holes 320 and 420.

According to the present invention as described above, the external air introduced by forming the first heat-radiating hole in the vertical portion of the synchronous motor housing of the microwave oven is circulated through the first heat-dissipating hole is improved heat dissipation, accordingly the wind direction as in the prior art Even if the switching lever is not installed, the second heat dissipation hole is formed in the lower part of the synchronous motor housing, and is circulated with each other to improve heat dissipation, thereby improving product performance.

Claims (1)

In a synchronous motor for a microwave oven built as a housing, On the outer circumference of the vertical portion 300 of the housing 200, a plurality of first heat dissipation holes 320 are formed at equal intervals. The heat dissipation structure of the synchronous motor for a microwave oven, characterized in that the second heat radiating hole 420 is formed in the edge region of the lower surface 400 of the housing 200 to circulate external air.