JPS641753Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a microwave oven.

(B) Prior art In a normal microwave oven, electrical components such as transformers and capacitors are placed in the electrical space between the heating chamber and the exterior cabinet that surrounds the heating chamber, and electrical components such as transformers and capacitors are placed in the electrical space between the heating chamber and the exterior cabinet surrounding the heating chamber. A fan device is provided. At this time, intake ports and exhaust ports are formed in the exterior cabinet, and in order to improve exhaust efficiency, it is desirable to form as many exhaust ports as possible.
If these ports are located close to each other, the high-temperature air that exits from the exhaust port will almost immediately re-enter the intake port, resulting in inconveniences. There is also the problem that there is no effective exhaust ventilation when

(c) Purpose of the invention The present invention provides a microwave oven that has an air intake port and an exhaust port separated from each other as much as possible, and that can effectively exhaust air even when both sides of the microwave oven are placed in close contact with a wall. It is something to do.

(d) Structure of the invention The structural features of the invention are that electrical components and a fan device are provided in the electrical space on one side of the exterior cabinet;
The intake port is provided on the rear surface of the exterior cabinet behind the electrical equipment space, and the exhaust port is provided along substantially the entire front edge and substantially the entire other side edge of the bottom surface of the exterior cabinet.

(E) Embodiment In the figure, 1 is a heating chamber, 2 is a door that opens and closes the front opening of the heating chamber, 3 is an exterior cabinet that surrounds the heating chamber 1 except for the front opening, 4, 4
Reference numeral 5 indicates electrical components such as transformers and capacitors, and 5 indicates a fan device for cooling the electrical components. These electrical components and the fan device are arranged in an electrical space between the right side of the heating chamber and the right side of the exterior cabinet. 6
7, 7, . . . are first exhaust ports formed along the front edge of the bottom surface 3b of the exterior cabinet 3. Ports 8, 8, .
A second exhaust port is formed along the opposite side edge, that is, the left side edge in the figure; 9 is an exhaust duct that is attached to the back surface 3a of the exterior cabinet and opens upward; 10 is the heating chamber 1; This is an exhaust passage that connects with the exhaust duct 9. A third exhaust port connecting the exhaust passage 10 and the exhaust duct 9 is provided on the back surface 3a of the exterior cabinet.

In the microwave oven, when the fan device 5 operates, outside air is sucked in through the intake port 6, and a part of the air cools a magnetron (not shown) placed near the fan device 5, and then flows into the heating chamber 5. After that, the exhaust passage 10 and the exhaust duct 9
is discharged through. Since this exhaust air is directed upward by the exhaust duct 9, it is unlikely to immediately re-enter the intake port 6. On the other hand, the other part of the air sucked in through the intake port 6 is discharged through the first exhaust port 7 and the second exhaust port 8 after cooling other electrical components 4 such as a transformer and a capacitor. At this time, since there are many first and second exhaust ports 7 and 8 at positions sufficiently far away from the intake port 6, the high temperature air exiting from these exhaust ports does not immediately re-enter the intake port 6. It is exhausted efficiently. Also, since the front of the heating chamber 1 is always placed facing an open space, even if the microwave oven is placed so that the left side of the exterior cabinet 3 is in close contact with the wall, the function of the second exhaust port 8 will deteriorate. Even in this case, the function of the first exhaust port 7 is sufficiently maintained, and the exhaust after cooling the electrical component 4 can be exhausted with almost no problem.

(f) Effects of the invention According to the invention, in the cooling air path that is directly discharged without passing through the heating chamber after cooling the electrical components, the intake port and the exhaust port are sufficiently separated, so that The hot air that comes out does not immediately go around the intake port, and is exhausted efficiently. Furthermore, even if one side or both sides of the microwave oven are placed in close contact with a wall and the function of the second exhaust port is degraded, the function of the first exhaust port is sufficiently maintained and exhaust air is carried out without much trouble.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a plan view thereof. 1... Heating chamber, 2... Door, 3... Exterior cabinet, 4... Electrical components, 5... Fan device, 6
...Intake port, 7, 8...First and second exhaust port.

Claims (1)

[Scope of utility model registration request] A heating chamber having a front opening, a door for opening and closing the front opening, an exterior cabinet surrounding the heating chamber except for the front opening, and a transformer disposed in an electrical space between the heating chamber and one side of the exterior cabinet. , an electrical component such as a capacitor, a fan device for cooling the electrical component, an air intake port provided on the back surface of the exterior cabinet behind the electrical component space, and an intake port provided along almost the entire front edge of the bottom surface of the exterior cabinet. A microwave oven comprising: a first exhaust port; and a second exhaust port provided along substantially the entire other side edge of the bottom surface of the exterior cabinet.