JP3018454B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a technique for reducing noise in a vacuum cleaner.

(Prior art) Conventionally, in order to reduce the noise generated by a vacuum cleaner,
As a structure for increasing the length of the passage before exhausting, the sound of exhaust wind, which is a factor of noise, is attenuated by distance.

(Problems to be Solved by the Invention) However, in the above-described conventional configuration, it is difficult to increase the passage length so as to reduce the sound in the limited space of the vacuum cleaner, and to increase the external shape. Had been taken.

An object of the present invention is to provide a vacuum cleaner capable of reducing noise without increasing the external shape.

(Means for Solving the Problems) The gist of the present invention that solves the problems is that an air passage connecting a front intake port and a rear discharge port provided in a vacuum cleaner main body composed of upper and lower housings has a problem. A vacuum cleaner in which a dust collecting chamber and a suction pressure generating fan are provided in order, wherein a partition wall between an air passage behind the fan and an exhaust port is provided on a side of the fan, and an air passage behind the fan and an exhaust port are provided. A communication port for communicating with the vacuum cleaner main body is provided at a position behind the partition wall of the upper housing of the vacuum cleaner main body, and the exhaust port is provided in a lower housing of the vacuum cleaner main body. In the vacuum cleaner.

(Operation) In the present invention, the air flow containing dust introduced from the intake port by the negative pressure generated by the fan flows into the dust collection chamber, where the dust is removed and sucked toward the fan. The exhaust air behind the fan hits the partition wall and is sent rearward along the inner surface of the partition wall, flows into the space between the partition wall and the exhaust port from the communication port located behind the partition wall, and is then discharged from the exhaust port to the atmosphere. It is. As described above, since the noise of the exhaust wind behind the fan does not directly come out of the exhaust port due to the partition, the partition functions as a sound insulating wall, thereby reducing noise leakage. Further, since the air passage bypasses the partition wall and reaches the exhaust port, the length of the passage can be increased without increasing the length of the main body of the vacuum cleaner, thereby reducing the distance of sound. Therefore, it was possible to reduce the noise.

(Example) Hereinafter, an example is described based on drawings.

The vacuum cleaner main body of this embodiment is divided into a lower main body case 1a and an upper main body case 1b, which are detachably connected.

A suction pressure generating fan 2a and a motor 2b for driving the fan 2a are supported on the lower body case 1a by vibration isolating rubbers 3a and 3b. The exhaust port 8 is provided on the side of the main body case 1a and is covered with the partition 4a. Similarly, the upper body case 1b has a bulkhead.
Although 4b is provided, there is a communication port 7 at this rear position,
Exhaust air is allowed to pass. Therefore, the silencer is formed in the space at the side of the motor, and the space can be effectively used.

The operation of the embodiment of the present invention configured as described above will be described.

Due to the rotation of the fan 2a, a negative pressure is generated in the air passage of the main body, and dust and air are sucked from the intake port 9. Dust is collected in the dust collection chamber 5 in front of the fan motor, and only air passes through the fan 2a and collides with the partition walls 4a and 4b. Here, the sound is blocked, and the air collides with the rib 6 in the main body. The colliding air flows out to the communication port 7 of the partition wall 4b provided in the upper main body case 1b. However, the exhaust port 8 is in the lower body case 1a.
Is provided in the upper body case 1b.
It flows from 4b to the partition 4a of the lower main body case 1a, and is discharged from the exhaust port 8 of the lower main body case 1a.

(Effects of the Invention) As described above, the present invention applies exhaust air to a partition provided on the side surface of an exhaust port to block sound, and the sound insulating wall provides
The length of the passage can be increased without increasing the external shape of the vacuum cleaner, the effect of attenuating sound distance is enhanced, and noise is reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where an upper body case of the embodiment is removed, FIG. 2 is a bottom view of the upper body case, FIG. 3 is a cross-sectional view at a position of a communication port of the embodiment, FIG. The figure is a cross-sectional view showing a main part of the present embodiment, and FIG. 5 is a longitudinal sectional view of the main part. 1a, 1b: Main body case 2a: Fan 2b: Motor 3a, 3b: Anti-vibration rubber 4a, 4b: Partition wall 5: Dust collection chamber 6: Main body rib 7: Communication port 8: Exhaust port 9: Inlet port

Claims (1)

(57) [Claims] 1. A vacuum cleaner in which a dust collecting chamber and a suction generating fan are sequentially provided in the middle of an air passage connecting an intake port on the front side and an exhaust port on the rear side provided in a main body of the vacuum cleaner comprising upper and lower housings. A partition between the air passage behind the fan and the exhaust port is provided along the air passage behind the fan, and a communication port for connecting the air passage behind the fan and the exhaust port is provided with the main body of the vacuum cleaner. A vacuum cleaner provided at a rear position of the partition wall of the upper housing and the exhaust port is provided in a lower housing of the vacuum cleaner main body.