KR100400514B1 - Vacuum cleaner - Google Patents

Abstract

A vacuum cleaner is disclosed that reduces the noise of exhaust air. Disclosed is a vacuum cleaner in which air sucked by a motor-driven impeller is exhausted to a main body outlet through a housing coupled to the discharge end of the impeller and assembled to surround the motor. A bulkhead which protrudes from the bottom of the housing to the same height as the side wall of the housing and a thickness that does not cause interference with the motor, so that the exhaust air can communicate with the space between the bottom of the housing so as to surround the motor in the space therebetween; A first exhaust air induction furnace having first and second outlets symmetric with each other, the exhaust flow paths formed by the partition walls and the sidewalls of the housing communicating with the rear side of the housing bottom, respectively; And a second exhaust air induction path formed by an outer side of the housing and a cover of the body. As a result, a double sigma flow is formed to reduce the noise energy contained in the exhaust air, thereby providing a low noise vacuum cleaner.

Description

Vacuum cleaner {Vacuum cleaner}

In general, the vacuum cleaner sucks air in a part to be cleaned and exhausts it through the dust collecting bag 3 and the exhaust filter, thereby collecting dust or foreign matter in the intake air. This suction force is generated as the motor 7 installed inside the vacuum cleaner rotates the impeller 5. Therefore, such a vacuum cleaner has a problem in that the exhaust air containing the noise of the motor 7 is discharged during use to cause noise pollution to the user and the people around.

In order to improve the problem of the vacuum cleaner, the motor (7) is wrapped in the housing (8), exhaust air collides with the housing (8), and then consumes noise energy and discharges to the outlet (10) of the body cover (9). To reduce noise. In other words, a vacuum cleaner having reduced noise by allowing exhaust air to be sigma flow has been developed and used. 1 and 2 show the flow of exhaust air of a vacuum cleaner according to the prior art.

FIG. 1 shows the flow of exhaust air when the exhaust air outlet 10 of the body cover is on the upper surface of the cover, and FIG. 2 shows the flow of exhaust air when this outlet 10 'is behind the body cover 9. to be.

However, the vacuum cleaner according to the related art has a problem in that the exhaust air induction path of the exhaust air is short and the noise cannot be sufficiently reduced.

The present invention has been made to solve the above problems, by increasing the induction path of the exhaust air, the noise energy of the exhaust air is consumed due to the collision with the exhaust induction path while the exhaust air is discharged, the noise reduction is remarkable Its purpose is to provide a low noise vacuum cleaner.

1 is a cross-sectional view showing the flow of exhaust air in a first embodiment of a vacuum cleaner according to the prior art;

2 is a cross-sectional view showing the flow of exhaust air in a second embodiment of a vacuum cleaner according to the prior art;

3 is a cross-sectional view showing the flow of exhaust air in one embodiment of a vacuum cleaner according to the present invention;

Figure 4a is a perspective view showing the housing of one embodiment of a vacuum cleaner according to the present invention,

4B is a perspective view of the housing of FIG. 4A from behind;

* Description of the symbols for the main parts of the drawings *

3; Dust bag 5; Impeller

7; Motor 9; Body cover

10,10 '; Exhaust air outlet 20; housing

21; Bulkhead 23; First outlet

25; Second outlet R1; 1st exhaust air induction furnace

R1a, R1b; Left and right exhaust passages R2; 2nd exhaust air induction furnace

In order to achieve the above object, the present invention provides a vacuum cleaner in which air sucked by an impeller driven by a motor is coupled to a rear end of the impeller and is exhausted to a main body outlet through a housing assembled to surround the motor. In the space between the inner wall of the housing and the motor to surround the motor from the bottom of the housing to the same height as the housing side wall, the thickness of the interference with the motor does not occur, the exhaust air can communicate The first and second discharge portions are formed so that a portion of the partition wall is blown out and the exhaust flow paths generated by the partition wall and the side wall of the housing communicate with each other on the opposite side from each other. A second exhaust air flow path formed by a first exhaust air induction path provided and a cover of an outer side of the housing and a main body; Including the road.

In addition, the first and the second discharge portion is made of a rectangular parallelepiped cylinder with a surface connected to the exhaust passage and a surface forming the rear discharge hole of the housing.

Here, the exhaust air inlet is provided on the upper surface of the main cover.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

As shown in FIG. 3, the vacuum cleaner according to the present invention is coupled to the discharge end 5b side of the impeller 5 by the air sucked by the impeller 5 driven by the motor 7. 7) In the vacuum cleaner passing through the inside of the housing 20 assembled to surround the exhaust to the main body outlet 10, the first exhaust air induction path (R1) and the housing formed inside the housing (20) And a second exhaust air induction path R2 formed by the outer side of the 20 and the cover 9 of the main body.

4A and 4B are perspective views showing the housing in which the first exhaust air induction path R1 is formed in the vacuum cleaner according to the embodiment of the present invention, from front and rear.

The first exhaust air induction path R1 includes a partition 21 and first and second discharge parts 23 and 25. The partition wall 21 protrudes from the bottom of the housing 20 so as to surround the motor 7 in a space formed between the inner wall of the housing 20 and the motor 7. In other words, the pipe-shaped partition wall 21 is formed at the bottom of the housing 20 between the motor 7 and the inner wall of the housing 20. In addition, a portion 21a of the partition 21 is blown so that the air discharged from the impeller 5 can communicate. In addition, the partition wall 21 has the same height as the height of the side wall of the housing 20, does not cause interference with the motor 7, and the exhaust air smoothly communicates with the side wall of the housing 20. It can have a thickness.

The first and second discharge portions 23 and 25 have exhaust passages R1a and R1b formed by sidewalls of the partition wall 21 and the housing 20 on opposite sides of the bursted portion 21a of the partition wall 21. The housing 20 is formed to communicate with the rear of the bottom and is symmetrical with each other. Further, the first and second discharge portions 23 and 25 are hollow rectangular parallelepiped cylinders, and the surfaces 23b of the first and second discharge portions 23 and 25 are connected to the exhaust passages R1a and R1b formed by the partition wall 21 and the inner wall of the housing 20. , 25b and a surface forming the discharge holes 23a and 25a are formed in the rear of the bottom of the housing 20. The first discharge part 23 is installed at a position in contact with the side wall of the partition wall 21 and the housing 20 while being parallel to the center line of the bursted portion 21a of the partition wall, and the second discharge part 25 is disposed at the center line. It is installed so as to be symmetrical with the first discharge portion (23).

The second exhaust air induction path R2 is a space formed by the outer surface of the housing 20 and the main body cover 9. The exhaust air is discharged to the outside of the cleaner through the discharge port 10 provided on the upper surface of the body cover (9).

Hereinafter, the flow of the exhaust air of the vacuum cleaner according to the present invention will be described.

As shown in FIG. 3, the suction air sucked by the rotational force of the impeller 5 driven by the motor 7 passes through the dust collecting bag 3 and passes through the suction end 5a of the impeller 5b. To be discharged. The exhaust air discharged from the impeller 5 passes through the space between the partition wall 21 and the motor 7, passes through the ruptured portion 21a of the partition wall, and is separated from the left and right to the inner wall of the partition wall 21 and the housing 20. Passing through the left and right exhaust passages (R1a, R1b) is discharged to the outside of the housing 20 through the first and second discharge portion (23, 25). At this time, the exhaust air passing between the partition wall 21 and the motor 7 and containing the noise of the motor 7 is formed by the partition wall 21 and the inner wall of the housing 20. While passing through the barrier rib 21 and the inner wall of the housing 20, the noise energy is consumed, and the exhaust air passing through the left and right exhaust passages R1a and R1b passes through the first and second outlets 23, In order to pass through 25) and exhaust the rear of the housing 20, the exhaust air flow has to be 90 degrees, so that a lot of noise energy is consumed due to the impact on the discharge wall. In other words, the exhaust air primarily forms a sigma flow to consume noise energy.

The exhaust air discharged through the first and second discharge parts 23 and 25 of the housing is vacuumed along the second exhaust flow path R2, which is a space formed by the outer side of the housing 20 and the cleaner body cover 9. It is discharged to the outside of the cleaner. At this time, the exhaust air discharged through the first and second discharge parts 23 and 25 located in the lower part of the housing 20 is changed in direction by hitting the main body cover 9, thus consuming a lot of noise energy and remaining noise energy. The gas is consumed by colliding with the outer surface of the housing 20 and the main body cover 9 while passing through the second exhaust air induction path R2. In other words, exhaust air forms a sigma flow as a secondary to consume noise energy. Here, the discharge port 10 provided in the main body cover 9 is preferably located on the upper surface of the impeller inlet end 5a in order to lengthen the exhaust flow path.

As such, the noise contained in the exhaust air is significantly reduced by forming the double sigma flow.

As described above, according to the present invention, since the exhaust air flow path of the exhaust air is long and the double sigma flow is formed, the noise energy contained in the exhaust air is effectively reduced, and the noise of the vacuum cleaner is significantly reduced. .

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific preferred embodiments described above, and thus, the present invention may be applied without departing from the gist of the present invention as claimed in the following claims. Those skilled in the art will be able to implement various modifications.

Claims (3)

In the vacuum cleaner in which the air sucked by the motor-driven impeller is coupled to the discharge end of the impeller and exhausted through the housing assembled to surround the motor to the main body outlet, The inner wall of the housing and the space between the motor to surround the motor at the same height as the housing side wall from the bottom of the housing, and protruding to a thickness that does not interfere with the motor, so that the exhaust air can communicate And a first and second discharge portion which are formed so as to communicate with each other in the partitioned rib and the exhaust passage generated by the sidewall of the partition and the rear side of the housing, on opposite sides of the bursted portion of the partition. A first exhaust air induction furnace; And And a second exhaust air induction furnace formed by the outer side of the housing and the cover of the main body. delete The method of claim 1, wherein the first and second discharge portion, And a surface having a rectangular parallelepiped shape in which a surface connected to the exhaust passage and a surface forming a rear discharge hole of the housing are formed.