JPS63314398A - Blower for electric equipment - Google Patents

Abstract

PURPOSE:To obtain the high cooling effect by installing an air receiving wall at least on one part on the periphery of a propeller fan and introducing the air received by the air receiving wall to a prescribed position through an air introducing passage and blowing out the blasted air in the air introducing passage in a prescribed direction by a control wall. CONSTITUTION:As for the cooling structure of an electronic range, the cooled electric part such as a magnetron 3 and transformer 4 is cooled by the cooling air supplied from a propeller fan 2 revolved by a motor 1. The blow-out side and suction side of the propeller fan 2 are separated by a separating wall 5. In this case, a cylindrical orifice 9 along the opened port part of the propeller fan 2 and an air guide part A installed over the orifice 9 are formed integrally in the separating wall 5. An air guide part A is formed from an air receiving wall 10, wind introducing passage 11, and a control wall 12 at the terminal edge, and air is allowed to collide with the control wall 12 and is blown out at right angles to the front part, and the magnetron 3 is cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a blower device for electrical equipment that needs to blow air to electrical components at predetermined locations for the purpose of cooling electrical components or the like.

2. Description of the Related Art In the conventional cooling structure of a microwave oven shown, for example, in FIGS. 4 and 5, reference numeral 1 denotes a motor, and a propeller fan 2 is provided at the tip of the shaft of the motor 1. 3 is a magnetron, and 4 is a transformer, which are respectively placed diagonally above and below the front of the mi-propeller fan 2, and are cooled by the flow of air from the propeller 77 and the fan 2 as electrical components to be cooled. There is. 6 is a separation wall that separates the blowing side and the suction side of the propeller fan.

Problems to be Solved by the Invention However, the flow of air from a propeller fan is swung forward from the direction tangential to the circumference of the blades, as shown by the arrow, so the wind does not travel straight, but in the direction of rotation of the blades. The flow becomes dependent. In the case of Fig. 6, the rotation is clockwise, so the wind blowing out in a circular direction hits the open wall 6 on the left side.
The hit wind flows upward along the open wall 6 as shown by the arrow. On the other hand, as shown in Fig. 4, the magnetron 3 needs to be located almost in the center of its width due to the distribution of radio waves, so the distance between the propeller fan 2 is quite wide, and the wind is smaller than the magnetron 3. Punching holes 8 made in the open wall 6 through the ventilation guide 7
It has a structure that allows it to be guided into the open warehouse, so there is a large ventilation resistance. Therefore, only a small amount of wind flows into the magnetron/3, and most of the wind wastefully escapes through the gap between the magnetron 3 and the separation wall 6. Therefore, it has been desired to improve the cooling of the magnetron and the ventilation inside the refrigerator.

The present invention solves these conventional problems and attempts to efficiently cool the magnetron and transformer that are separated by a distance.In particular, the present invention collects the wind that conventionally was wasted and cools it directly to the magnetron. The purpose was to greatly improve the blowing, cooling effect, and ventilation performance into the open warehouse.

Means for Solving the Problems In order to achieve the above object, in the blower device for electrical equipment of the present invention, a wall is provided as a wind receiver in a part of the periphery of the propeller fan. an air guide path leading to the position of
The blower includes a control wall that collects air through the air guide path and blows the air in a predetermined direction.

According to the blower device for electrical equipment of the present invention, the wind receiver provided around the propeller fan receives the wide-angle swirling flow, which was previously blown out wastefully by the propeller fan, on the wall, and the air guide path directs the swirling flow to a predetermined position. The collected wind collides with the control wall, and the wind with no escape is blown forward. This wind has high wind speed and strong directionality, so it is possible to blow the wind toward a distant object from a perpendicular direction.

In this way, the blower of the present invention has the advantage that cooling of two separate parts, which has been difficult in the past, can be easily and effectively achieved.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 is a sectional view of the main parts of the microwave oven from the side, and FIG. 2 is a sectional view of the main parts of the microwave oven as seen from the front.

1 is a motor, and a propeller fan 2 is provided at the tip of the shaft of the motor 1. 3 is the magnetron,
Reference numeral 4 denotes a transformer, which is an electrical component to be cooled together with the propeller fan. 5 is a separation wall that separates the blowout side and the suction side of the propeller fan, 9 is a cylindrical orifice along the opening of the propeller fan 2, and above this orifice is an air guide section that connects the separation wall 6.
It is formed integrally with. The magnetron 3 is arranged in front of this air guide section. A ventilation guide 7 guides the wind flowing into the magnetron 3 into the refrigerator through a punched hole 8 formed in the open side wall 6. Third
The figure is a perspective view of the air guide part, where 10 is a wall, and 11 is a wind guide path connected to one end of the wall 1o.
It ends at a control wall 12, and the wind hits the control wall 12, changes the direction of flow, and blows out at right angles to the front, cooling the magnetron 3.

Effects of the Invention As described above, according to the cooling device for electrical equipment of the present invention, the following effects can be obtained.

(1) The wind that is wasting away can be controlled and used effectively. In other words, the wind receiver receives the escaping wind at the wall 10, collects it in the air guide path, and blows it out forward by hitting the control wall. Therefore, as in the embodiment, the wind at high wind speed is directed from a direction perpendicular to the magnetron at a distant position. This allows air to be blown into the air, greatly improving cooling performance.

@) Even if the horizontal and vertical spacing between the propeller fan and the magnetron is far apart as in the example, it is possible to blow strong directional wind from the front into the magnetron by the action of the air guide, so a single propeller fan can be used. When cooling the magnetron and transformer, there are many variations in the arrangement of both parts.

(3) Since the Air Gaitom can be resin-molded integrally with the separation wall, cooling performance can be improved with almost no increase in cost.

(4) The present invention is applicable not only to the microwave oven of the embodiment but also to electrical equipment using a propeller fan that requires air for cooling, temperature removal, etc.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a microwave oven that is an embodiment of the present invention, Fig. 2 is a front sectional view of the same, Fig. 3 is a perspective view of the air guide section, and Fig. 4 is a side sectional view of a conventional microwave oven. Figure, 6th
The figure is a front sectional view of the same. 1...MOP+, 2...Propeller fan, 3...Magnetron, 4...Transformer, 5...Separation wall, 7. ...Ventilation guide, 1o...Wind receiver is wall, 11...Air guide path, 12...Control wall, Mu...Air guide Department. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
figure

Claims (1)

[Claims] A wind receiving wall provided at least in part around the propeller fan, an air guide path that guides the air received by the wind receiving wall to a predetermined position, and an air guide path that collects the air in the air guide path and blows it out in a predetermined direction. A blower device for electrical equipment having a control wall.