JPH05187391A - Electric blower - Google Patents

Abstract

PURPOSE:To provide an electric blower whose direction can be set in any desired direction such as up and down direction and lateral direction. CONSTITUTION:By providing an air intake port 6 to a fan 2 on the side surface in the direction perpendicular to the motor rotary shaft of a casing 5 which covers the periphery of the fan 2, it is not necessary to take in the air from the casing end face in the motor rotary shaft direction, and it is made possible to set the surface facing to the lower side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blower used for a vacuum cleaner, a resin carrier or the like.

[0002]

2. Description of the Related Art In recent years, efforts have been made to reduce the size and weight of electric blowers and to reduce noise. The conventional electric blower will be described below.

FIG. 5 shows a conventional electric blower, where 1 is an electric motor such as a commutator motor or a brushless motor,
Reference numeral 2 is a fan, 3 is an air inlet of the fan 2, 4 is an air outlet of the fan, 5 is a casing covering the periphery of the fan, and 10 is an air intake of the casing.

The operation of the conventional electric blower configured as above will be described below. First, when a voltage is applied to the electric motor 1, the fan 2 rotates. As a result, the air is taken in from the air intake 10 of the casing 5, flows from the air suction port 3 of the fan 2 through the air discharge port 4 as shown by the arrow, and is discharged to the outside from the side portion of the electric motor 1.

[0005]

However, in the above-mentioned conventional configuration, since the air intake port 10 of the casing 5 is located on the end face in the direction of the motor rotation axis, if the end face is installed in the downward direction, the air will not flow. Inhalation of
There is a problem that the end face of the casing in the motor rotation axis direction cannot be installed downward.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an electric blower which can be installed in any direction such as vertical or horizontal.

[0007]

In order to achieve this object, the electric blower of the present invention has a structure in which an air inlet is provided on a side surface of a casing that covers the periphery of the fan in a direction perpendicular to the motor rotating shaft. Is.

[0008]

With this configuration, air can be taken in from any position on the side surface of the fan casing that is perpendicular to the motor rotation axis, and the installation direction of the electric blower can be changed vertically.
It can be performed in any direction such as sideways.

[0009]

EXAMPLES Example 1 Hereinafter, examples will be described in detail with reference to the drawings. FIG. 1 shows an electric blower according to a first embodiment of the present invention, in which 1 is an electric motor, 2 is a fan, 3 is an air suction port of the fan, 4 is an air discharge port of the fan, and 5 is the periphery of the fan. 6, a reference numeral 6 is an air inlet provided on a side surface of the casing 5 in a direction perpendicular to the motor rotation axis, and a reference numeral 7 is a blocking plate for separating an air intake side and an air discharge side.

The operation of the electric blower configured as described above will be described below. First, when a voltage is applied to the electric motor 1, the fan 2 rotates, and along with this, air is taken in from the air intake 6 provided in the casing 5, passes through the blocking plate 7, and is sucked into the fan 2 from the air suction port 3. It
Then, it passes through the air discharge port 4 of the fan, passes through the inside of the electric motor 1 as indicated by an arrow, and is discharged from the side portion of the electric motor 1 to the outside.

As described above, according to this embodiment, by providing the air intake port 6 in the fan casing 5 of the electric blower on the side surface portion in the direction perpendicular to the motor rotation axis,
It is not necessary to provide the air intake port on the end surface of the fan casing in the motor rotation axis direction, and the electric blower can be installed in any direction such as vertical or horizontal.

(Embodiment 2) FIG. 2 shows a second embodiment of the present invention. The difference from the configuration of FIG. 1 is that the air intake 6 is arranged all around the casing 5. Is.

(Embodiment 3) FIG. 3 shows a third embodiment of the present invention. The difference from the configuration of FIG. 1 is that the air discharge port 8 is also provided on the side surface of the casing provided with the air intake port 6. That is the point. In this case, an air guide 9 is attached to cut off the air discharged from the air discharge port 4 of the fan 2 so as not to go to the electric motor side.

(Embodiment 4) FIG. 4 shows a fourth embodiment of the present invention. Here, the air discharge port 8 is arranged around the entire circumference of the casing 5, like the air intake port 6.

[0015]

As described above, according to the present invention, the air inlet of the electric blower is provided on the side surface portion of the fan casing in the direction perpendicular to the motor rotation axis, so that the electric blower can be installed vertically or horizontally. It is possible to realize an excellent electric blower capable of performing the above.

[Brief description of drawings]

FIG. 1 is a half sectional view of an electric blower according to a first embodiment of the present invention.

FIG. 2 is a half sectional view of an electric blower according to a second embodiment of the present invention.

FIG. 3 is a half sectional view of an electric blower according to a third embodiment of the present invention.

FIG. 4 is a half sectional view of an electric blower according to a fourth embodiment of the present invention.

FIG. 5 is a half sectional view of a conventional electric blower.

[Explanation of symbols]

1 ... Electric motor, 2 ... Fan, 3 ... Air inlet,
4 ... Air discharge port, 5 ... Casing, 6 ... Air intake port, 7 ... Blocking plate, 8 ... Air discharge port, 9
… Air guide.

Claims (2)

[Claims] 1. A fan (2) is rotated by an electric motor (1) such as a commutator motor or a brushless motor to suck in air,
The electric blower which discharges, The air blower (6) provided in the side surface of the casing (5) which covers the circumference | surroundings of a fan at the direction orthogonal to the motor rotating shaft. 2. The electric blower according to claim 1, wherein an air discharge port (8) is provided on a side surface of the casing having the air intake port (6).