JPS63314793A - High frequency heating device - Google Patents

Abstract

PURPOSE:To enhance the cooling effect by furnishing a suction hole between the bottom surface of a heating chamber and the bottom surface of a power supply box, and forming suction hole at the bottom surface of the power supply box facing a fan. CONSTITUTION:A motor 18 and a propeller fan 19 are installed with screws in the center of the bottom surface of a power supply box. The air suction region is set off wider by inhaling the air from a suction hole at the right side face of body and a suction hole 28 provided between the bottom surface of power supply box and the bottom surface of heating chamber and a bottom surface suction hole 20 so as to cool a high voltage transformer 22 and a magnetron 21 to constitute a high frequency oscillating device. A partition plate 29 is put so as to enclose the propeller fan 19, magnetron 21, and high voltage transformer 22, that should enhance the cooling effect.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to cooling of a high frequency oscillation device in a high frequency heating device.

2. Description of the Related Art A conventional high-frequency heating device, as shown in FIG. It sucked in outside air to cool electrical components such as the magnetron 5 and high-voltage transformer 6 that make up the high-frequency oscillator.

In addition, in order to improve the cooling efficiency, as shown in FIG. 6, the lower part of the orifice 7, which has a diameter larger than the rotation locus of the propeller fan 2, is horizontally cut out to form a partition plate 8.
As shown in FIG. 5, this partition plate 8 is installed on the back side of the main body case 1 using the mounting screws 9 so that it is located approximately at the center of the thickness of the propeller fan 2 and the center of the propeller fan 2 and the center of the orifice 7 coincide. . Further, the upper surface of the partition plate 8 and the upper surface of the magnetron 5 are connected by a guide 10. As a result, the magnetron 5 is configured to send high-pressure wind by the propeller fan 2 rectified by the orifice 7, and the high-pressure transformer 6 is configured to send wind with a lower wind pressure than the propeller fan 2 directly to the exhaust gas. As for the path, the cooling air from the propeller fan 2 passes through the magnetron 5, is guided by the air guide 12, passes from the intake port 13 on the right side of the heating chamber to the exhaust port 15 on the upper left side of the heating chamber in FIG. It exits from the exhaust port 16 provided on the left side of the main body case. Further, the cooling air generated by the propeller fan 2 passes around the high-pressure transformer 6 and exits to the outside through an exhaust port 14 provided on the bottom of the main body.

Problems to be Solved by the Invention However, if such a cooling system were used, the intake area would be limited, and the amount of intake air would not be sufficient. There is a problem in that the exhaust gas flows toward the operation panel and heats the electrical parts of the tank. In addition to the small amount of intake air, it is difficult to provide an exhaust port on the main body case on the side of the power supply box due to wiring such as high-voltage lead wires, so the area of the exhaust opening to the outside of the main unit cannot be made large. There is a problem.

The present invention solves these conventional problems and provides a high-frequency heating device that improves the cooling state by increasing the amount of intake air.

A high-frequency heating apparatus of the present invention includes a heating chamber for storing food to be cooked, and a one-source box adjacent to the heating chamber and having a bottom surface lower than the bottom surface of the heating chamber. , a high frequency oscillator that supplies high frequency to the heating chamber in the power supply box;
A source box is provided with a power supply component for the high frequency oscillation device, a fan provided below the power supply box and having a drive source, and a partition plate surrounding the high frequency oscillation device; An intake port is provided between the bottom of the chamber and the bottom of the power supply box, and an intake port is formed on the bottom of the power supply box facing the fan.

Function: The high-frequency heating device of the present invention includes a fan provided at the center of the bottom of the power supply box, and a fan provided at the bottom, which connects the air intake portion at the bottom of the right side of the main body case, the bottom of the heating chamber, and the air intake portion of the power supply box. A sufficient cooling effect can be obtained by installing a partition plate between the bottom surfaces, which has a wide intake area, and rectifying the air flow. From the above, since a sufficient cooling effect can be obtained, the high-frequency heating device can be made lighter and smaller.

EXAMPLE Hereinafter, a high-frequency heating apparatus according to an example of the present invention will be explained with reference to the drawings. Figures 1 to 4 show a high-frequency heating device according to an embodiment, and as shown in the figures, an electric motor 18 and a propeller fan 19 are installed with screws f Air is sucked in through the intake hole 28 provided between the bottom surface of the power supply box and the bottom surface of the power supply box, and the intake port 26 on the right side of the body to cool the magnetron 21 and high voltage transformer 22 that constitute the high frequency oscillation device. To achieve a good cooling effect, the partition plate 29 is placed over the propeller fan 19, magnetron 21, and pressure transformer 22;

The partition plate 29 forms an orifice 30 having a diameter larger than the rotation locus of the propeller fan 19 .
Attach the main case back 24 and the magnetron 21 with screws so that the center of the orifice 30 matches the center of the orifice 30.

As described above, the partition plate 29 has the role of also creating a natural convection effect by blowing air from the bottom to the top of the propeller fan 19. The marco partition plate 29 also has the role of dividing the exhaust into three directions, one for exhausting to the heating chamber 27 and one for exhausting to the back side of the main case 23.
One side also serves to exhaust air to the body louver exhaust port 25.

From the above, sufficient air is taken in by the partition plate 29 that encloses the electric motor 18, propeller fan 19, and high-frequency oscillation device attached to the center of the bottom of the power supply box.
By improving the cooling effect by providing sufficient exhaust air, the high-pressure transformer 22 and magnetron 21 can be made smaller and lighter, making it possible to make the high-frequency heating device smaller, lighter, and less labor-intensive. It is very easy to use.

Effects of the Invention The high frequency heating device of the present invention has the following effects.

(1) By installing an air guide, hot air can be exhausted outside the main unit without hitting the electrical components behind the operation panel.

(2) By installing the propeller fan with a motor in the center of the bottom of the power supply box, the intake area can be widened.

By installing a partition plate and blowing rectified air, it is possible to further improve the cooling performance of the magnetron, making the high-voltage transformer more compact.
It becomes possible to reduce weight and save power.

(3) Other electrical components in the intake area can be cooled at the same time.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of a conventional high-frequency heating device, FIG. 6 is a perspective view of the partition plate, and FIG. 7 is an exhaust part on the left side of the main body. It is a partially cutaway perspective view. 18...Electric motor, 19...Propeller fan, 20...Bottom intake port, 21...
Magnetron, 22... High voltage transformer, 23.
・・・・・・Rear exhaust port, 24・・・・−・Back of main body case, 25・・・・Body intake port, 26・−・・
・Body exhaust port, 27... Heating chamber intake port, 2
8... Bottom intake port, 29... Partition plate. Name of agent: Patent attorney Toshio Nakao and 1 other person @
3 Figure 5 Figure 6

Claims (2)

[Claims] (1) A heating chamber that stores food to be cooked; a power supply box that is adjacent to the heating chamber and whose bottom surface is located below the bottom surface of the heating chamber; and a power supply box that is provided within the power supply box and supplies high frequency waves to the heating chamber. a high-frequency oscillation device, a power supply component for the high-frequency oscillation device provided in the power supply box, a fan having a drive source provided below the power supply box, and a partition plate surrounding the high-frequency oscillation device; A high-frequency heating device comprising: an intake port provided between a bottom surface of the heating chamber and a bottom surface of the power supply box, and an intake port formed on the bottom surface of the power supply box facing the fan. (2) The high-frequency heating device according to claim 1, wherein an air intake port is formed below the side surface of the power supply box.