JPH074382A - Sirocco blower - Google Patents

Abstract

PURPOSE:To enable thinning and the cooling of a motor simultaneously in a sirocco blower with a sirocco fan and a sirocco fan rotating motor disposed in a casing. CONSTITUTION:The rotor 24 of a sirocco fan 22 and a boss placed at the center of the rotor 24 are connected to each other by four connecting parts 28. A motor 18 is disposed inside the rotor 24, and the rotary shaft 20 of the motor 18 is fixed to the boss.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sirocco type blower.

[0002]

2. Description of the Related Art Conventionally, in order to make a sirocco type blower 100 thin, as shown in FIG.
There is one in which a motor 118 for rotating the motor is arranged inside the sirocco fan 122. That is, the sirocco fan 122
A recess 132 is provided at the center of the
A boss 126 is provided at the center of the inner side of 2. Then, the motor 118 is fixed to the center of the casing 112, and the recess 13
2 is covered on the motor 118 to fix the rotating shaft of the boss 126 and the motor 118.

In the sirocco-type blower 100, since the motor 118 is arranged inside the recess 132, the thickness of the casing 112 can be made substantially equal to the thickness of the sirocco fan 122, and the thickness can be easily reduced. is there.

[0004]

However, when the sirocco-type blower 100 having the above-described structure is used, the motor 118
Is disposed inside the recess 132 of the sirocco fan 122, so that even if work wind flows into the casing 112, the motor 118 is not cooled by the work wind. Therefore, there is a problem that the temperature of the motor 118 rises more than necessary.

Therefore, the present invention provides a sirocco type blower which can make the sirocco type blower thinner and at the same time cool the motor.

[0006]

A sirocco-type blower of the present invention is a sirocco-type blower in which a sirocco fan and a motor for rotating the sirocco fan are arranged inside a casing. The boss at the center is connected by a plurality of connecting portions, the motor is arranged inside the rotor, and the rotary shaft of the motor is fixed to the boss.

[0007]

[Operation] With the sirocco-type blower having the above structure, the motor is arranged inside the sirocco fan, so that the thickness can be reduced. Further, the work wind sucked into the casing passes through the openings between the connecting portions and flows toward the rotor. In this case, since there is no member that surrounds the motor, the work wind cools the motor.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sirocco type blower 10 showing an embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 12 is a casing of the sirocco type blower 10. At the center of the upper surface of the casing 12,
A suction port 14 is provided for the work wind to flow in.
A blower opening 16 for blowing air is opened on the side surface of the casing 12.

Reference numeral 18 is a motor provided on the bottom surface of the casing 12. The rotary shaft 20 of the motor 18 is on the upper surface.

Reference numeral 22 is a sirocco fan arranged inside the casing 12. This sirocco fan 22
As shown in FIG. 2, it comprises a cylindrical rotor 24 and a boss 26 provided in the center thereof. The upper end of the rotor 24 and the upper end of the boss 26 are connected by four connecting portions 28. Further, the rotor 24 is provided with a plurality of blades 30 for sending the wind to the outside. The connecting portion 2
8 is to increase the plate thickness in order to increase its rigidity,
Alternatively, it may be formed by a separate member. Moreover, simply
In addition to connecting the boss 26 and the rotor 24, a burr may be provided like an axial fan.

In the sirocco-type blower 10 having the above structure, the work wind sucked from the suction port 14 passes through the opening 25 between the four connecting portions 28, reaches the inside of the sirocco fan 22, and is driven by the motor 18. While passing around, it reaches the rotor 24, passes through the gap between the blades 30, and the blower port 1 of the casing 12
Blow from 6.

In this case, since the work wind passes around the motor 18, the motor 18 can be cooled. Further, since the motor 18 is arranged inside the sirocco fan 22, the thickness of the casing 12 can be reduced.

[0014]

As described above, in the sirocco type blower of the present invention, the work wind cools the motor and
Since the motor is arranged inside the sirocco fan, the casing can be made thin.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a sirocco type blower showing an embodiment of the present invention.

FIG. 2 is a perspective view of the sirocco fan.

FIG. 3 is a vertical sectional view of a conventional sirocco type blower.

[Explanation of symbols]

 10 Sirocco type blower 12 Casing 18 Motor 20 Rotating shaft 22 Sirocco fan 24 Rotor 26 Boss 28 Connection part

Claims (1)

[Claims] 1. A sirocco-shaped blower in which a sirocco fan and a motor for rotating the sirocco fan are arranged inside a casing, wherein a rotor of the sirocco fan and a boss at the center of the rotor are connected by a plurality of connecting portions. A sirocco-type blower, wherein the sirocco-shaped blower is connected to the rotor, the motor is disposed inside the rotor, and the rotation shaft of the motor is fixed to the boss.