KR20090050792A - Vacuum cleaner - Google Patents

Abstract

The present invention relates to a vacuum cleaner having a structure capable of reducing noise generated by air flowing along a guide channel.

According to the present invention, a suction plate including a main suction port for suctioning dust and the like on a cleaning surface and a guide channel for guiding air to the main suction port side, a suction duct communicating with the main suction port, and a part of air on the guide channel And a connecting unit communicating the guide flow path with the suction duct so as to bypass the main suction port and flow into the suction duct.

Description

Vacuum cleaner {Vacuum cleaner}

The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner that can reduce the suction noise generated during operation.

The vacuum cleaner is a device that sucks the dirt on the surface to be cleaned by using the suction force generated by the driving of the vacuum source built into the main body. The vacuum cleaner includes a cleaning main body with a built-in vacuum source, a suction nozzle for sucking dirt facing the surface to be cleaned, and an extension passage for guiding the dirt sucked from the suction nozzle to the cleaning main body.

In general, the suction nozzles are provided with a single shape or a plurality of suction ports through which suction power is transmitted to suck dirt. Therefore, while the suction power is strong in the center portion where the suction port is installed, the suction power decreases toward both sides of the suction port. Because of this, the central part of the suction nozzle provided with the suction port can suck the dirt on the surface to be cleaned well, and the cleaning efficiency is good. However, since the cleaning efficiency is reduced on both sides, guide flow paths are provided at both sides of the suction port. There is also known a structure that allows a suction force to be transmitted through the suction port. However, dust collecting air introduced from the guide flow passages at both sides is collected at the suction port, and thus there is a problem in that noise is greatly generated due to the increase in the flow velocity and the vortices generated when the air collides with each other.

In order to reduce the noise generated as described above, the suction nozzle of the vacuum cleaner according to Korean Patent Laid-Open Publication No. 10-2007-32443 includes a lower housing, an upper housing, and a noise reduction rib. The lower housing has a suction port having a predetermined height in a central portion thereof, and is disposed on both sides of the suction port to form a guide flow path for suctioning the suction side air. The upper housing provides a passage for moving the air entering through the suction port when combined with the lower housing to the extension tube connector of the vacuum cleaner. Noise reduction ribs are installed at the inlet port, thereby preventing noise from colliding with the air flowing from both guide flow paths.

However, since the opening of the guide flow path of the conventional vacuum cleaner is formed at the side edge side, the flow of air introduced from the front and rear of the guide flow path is combined with the flow of air flowing from the side through the opening, so that a high vortex flow occurs. Is formed and there is a problem that the noise is generated thereby.

In addition, since the intake port is located at the center side, there is a problem in that noise is increased due to flow disturbances while the air flows along the guide channel so that air flows into the intake port.

The present invention has been made to solve the above problems, it is an object of the present invention to provide a vacuum cleaner having a structure that can reduce the noise generated by the air flowing along the guide channel.

The present invention for achieving the above object is a suction plate including a main suction port for suctioning dust and the like of the cleaning surface and a guide flow path for guiding air to the main suction port side, a suction duct in communication with the main suction port, And a connecting unit communicating the guide passage with the suction duct such that a part of the air bypasses the main suction port and flows into the suction duct.

In addition, an auxiliary suction port is formed in the guide passage, and the suction duct includes a first opening communicating with the main suction opening, and a second opening communicating with the auxiliary suction opening by the connection unit.

In addition, the guide flow path is formed in the horizontal direction of the suction plate, the main suction port is provided at least one in the center of the guide channel, the auxiliary suction port is provided in at least one pair on both sides of the guide channel.

In addition, the suction duct has a hinge axis is formed to be rotatable at a predetermined angle with respect to the suction plate, the second opening is formed in the hinge axis.

In addition, the auxiliary suction port is formed in a plurality corresponding to both sides of the main suction port, the connection unit is a first connecting portion for communicating the air introduced into the plurality of auxiliary suction ports, and the air in the first connecting portion of the suction duct It may include a second connecting portion to guide to.

In addition, the guide flow passage is recessed from the bottom surface of the suction plate, and the edge region of the guide flow passage is formed at substantially the same height.

In another aspect, the present invention is a vacuum cleaner having a suction body formed with a suction port for suctioning dust and the like of the cleaning surface, the suction passage guide flow recessed from the bottom surface of the suction body to guide the flow to the suction port side It includes, and the stepped portion may be formed on the edge of the guide flow path.

In addition, the guide flow path is formed long in the longitudinal direction, the stepped portion is formed at both ends of the guide flow path includes a side stepped portion for reducing the inflow of the air in the lateral direction of the suction body.

In addition, the suction body is a suction having a guide flow path to cool the flow of air and at least one main inlet provided on the center side of the guide flow path to suck the dust of the cleaning surface, and the auxiliary suction port spaced apart from the main suction port a predetermined distance Plate; A suction duct having a first opening communicating with said at least one main suction opening and a second opening communicating with said at least one auxiliary suction opening; It may include a connecting pipe connecting the auxiliary suction port and the second opening.

In another aspect, the present invention provides a guide channel for guiding the flow of air, at least one main inlet provided at a central side of the guide channel to suck dust from a cleaning surface, and an auxiliary inlet spaced apart from the main inlet by a predetermined distance. A suction plate having a; A suction duct having a first opening communicating with said at least one main suction opening and a second opening communicating with said at least one auxiliary suction opening; And a connection pipe connecting the auxiliary suction port and the second opening.

In addition, the present invention as viewed from another aspect of the present invention comprises: a suction plate having a guide flow path formed in a predetermined depth to guide the flow of air, and at least one main suction hole formed on the guide flow path to suck in dust and the like; A suction duct for guiding dust, etc. introduced through the main suction hole; The suction plate includes at least one auxiliary suction port formed to be spaced apart from the at least one main suction hole in order to reduce noise generated by the flow of air on the guide channel.

The apparatus may further include a connection unit such that the air sucked through the auxiliary suction port bypasses the main suction port and flows into the suction duct.

The vacuum cleaner according to the present invention described above is provided with a bypass passage connecting the guide passage and the suction duct, thereby minimizing the flow disturbance in the guide passage and reducing the noise.

In addition, by forming a stepped portion at the edge of the guide flow path to suppress the excessively high flow rate of air flowing in a specific direction has the effect of minimizing the disturbance of the flow to reduce the flow noise.

Hereinafter, a vacuum cleaner according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a schematic view of a vacuum cleaner according to a first embodiment of the present invention, Figure 2 is an exploded perspective view showing the configuration of the suction body of the vacuum cleaner according to the first embodiment of the present invention, Figure 3 is a suction of Figure 2 A perspective view showing a state in which a plate and a suction duct are combined. 4 is a perspective view from below of the suction body included in the vacuum cleaner according to the first embodiment of the present invention, and FIG. 5 is a cross-sectional view showing the flow of the suction body of the vacuum cleaner according to the first embodiment of the present invention. .

As shown in Figure 1, the vacuum cleaner according to a preferred embodiment of the present invention, the main body 10 is provided, the connection pipe for guiding the fluid flowing by the suction force generated by the driving of the main body 10 ( 11) and a connection hose 12 is provided.

One end of the connection pipe 11 is provided with a handle 13, and one side of the handle 13 is provided with an operation unit 14 for operating the function of the vacuum cleaner. The other end of the connection pipe 11 is coupled to the suction body 20 for sucking the foreign matter on the cleaning surface by the suction force generated in the main body 10.

When the vacuum cleaner configured as described above operates the operation unit 14 provided in the handle part 13, the suction unit 20, the connection pipe 11, and the connection hose 12 draw air by suction force driven by the main body 10. Suction into the body 10 through. At this time, foreign matter such as dust present on the cleaning surface is sucked together with the air and is collected by a dust collecting bag (not shown) of the main body 10 to perform cleaning.

As shown in FIGS. 2 and 3, the suction body 20 according to the present invention includes a cover part 40 forming an appearance and a suction port 51 provided on a lower surface of the cover part 40 to suck foreign substances on a cleaning surface. And a suction plate 50 having a 53 formed therein, and a suction duct 30 for guiding air including dust sucked from the suction plate 50 toward the connection pipe 11.

Although not shown in the upper portion of the cover 40, it is possible to install a button unit for switching the function so that the user can selectively use the cleaning function, such as hard floor (hard floor) cleaning or carpet, button unit (not shown) Brush unit (not shown) to move up and down in conjunction with the operation can be installed. At this time, the brush unit is protruded from the suction plate 50 by operating the button unit when cleaning the hard plug, and the brush unit is inserted into the suction body 20 when the carpet is to be cleaned. Since the button unit and the brush unit correspond to the related art, illustration and description thereof will be omitted.

In the central portion of the cover portion 40, the suction duct 30 for guiding the foreign matter introduced through the main suction port 51 to the main body 10 is hingedly coupled to the upper portion of the suction plate 50.

At this time, although not shown in the first embodiment of the present invention, despite the rotation of the suction duct 30, the air sucked through the main suction port 51 is smoothly to the suction duct 30 through the first opening (32). Guide members may be provided to be introduced.

The suction duct 30 has a pair of hinge shafts 31 for coupling with the suction plate 50, and flows in from the main suction port 51 of the suction plate 50 at the lower center of the suction duct 30. The first opening 32 for receiving the air is formed. In addition, the hinge shaft 31 is hollow and is formed with a second opening 33 for receiving air introduced from the auxiliary suction opening 53 to be described later.

In addition, the rear side of the suction duct 30 is formed with a wheel mounting portion 34 is mounted on the wheel 35 for smooth movement of the suction body (20).

The cover part 40 is coupled to the upper portion of the suction plate 50 to seal the inside of the suction body 20 from the outside. The cover portion 40 is formed with an incision 41 cut into a shape corresponding to the shape of the suction duct 30. The suction duct 30 is exposed to the outside of the suction body 20 through the cutout 41.

The suction plate 50 is provided with a main suction port 51 for sucking air including dirt on the cleaning surface in the central portion. The main suction port 51 has a substantially rectangular shape and is provided to have a predetermined height. The main suction opening 51 may be provided as a single hole of various shapes, of course, may be provided in a plurality of various shapes.

As shown in FIGS. 2 and 4, guide flow paths 52 formed in the horizontal direction of the suction plate 50 extend from the main suction port 51 to both end portions of the suction plate 50 on both sides of the main suction port 51. ) Are formed symmetrically. The guide passage 52 has a predetermined width in the longitudinal direction of the suction plate 50 and is recessed from the bottom surface to have a predetermined height from the bottom surface of the suction plate 50. The guide passage 52 gradually increases in height from both end portions of the suction plate 50 toward the main suction port 51.

Accordingly, when the vacuum cleaner is driven, suction force is generated, and air including dirt flows along the guide flow path 52 to open the main suction port 51 formed in the center of the suction plate 50 and the first opening 32 coupled thereto. It is introduced into the suction body 20 and guided to the main body 10.

In this cleaning process, the flow noise is generated as the air flows along the guide flow path 52 to the main suction port 51 by the suction force of the vacuum cleaner. That is, the airflow (A airflow) flowing into the guide flow path from the front of the suction body 20 and the airflow (B airflow) flowing into the guide flow path 52 from the rear of the suction body 20 and the suction body 20. The airflow (C airflow) flowing into the guide flow passage 52 from the side of the mixture is mixed with each other on the guide flow passage 52, so that noise is increased due to flow disturbance.

In the first embodiment of the present invention, a portion of the air flowing on the guide passage 52 is introduced into the suction duct 30 without flowing along the guide passage 52 in order to reduce the noise caused by the flow disturbance. Set up a configuration that will allow it to work.

That is, according to the first embodiment of the present invention, a part of air on the guide flow path 52 flowing toward the main inlet port 51 passes through the main inlet port 51 to enter the suction duct 30. ) And a connection unit 60 for communicating the suction duct 30.

The connection unit 60 connects the guide flow path 52 and the suction duct 30. The auxiliary suction ports 53 are formed at corresponding positions on both sides of the guide flow path 52, and the suction duct 30 is formed at the corresponding position. The second opening 33 is provided to be spaced apart from the one opening 32. In this case, the connection unit 60 has one end 61 connected to the auxiliary suction port 53, and the other end 62 is connected to the second opening 33 to communicate the auxiliary suction port 53 and the second opening 33. It is provided in the form of a connecting tube.

The connection unit 60 is provided with a flexible tube, which is used for a firm connection between the auxiliary suction port 53 and the second opening 33 regardless of the movement of the suction body 20 and the rotation of the suction duct 30. to be.

At this time, preferably as shown in Figure 2, by forming a second opening 33 in the hinge shaft 31 formed for the rotation of the suction duct 30, despite the movement of the suction body auxiliary suction port 53 It is possible to prevent the intake air to count outside between the and the second opening (33).

In addition, since the flow disturbance on the guide flow path occurs largely at both edges of the guide flow path where the A, B, and C air flows, it is preferable that the auxiliary suction port is formed on both side edges of the guide flow path 52. At this time, by forming the edge of the guide channel 52, that is, the height of the front, rear, side borders (54, 55, 56) to approximately the same to increase the amount of air flowing into the side lower the side borders as in the prior art It is effective to reduce noise by reducing the flow flow generated.

However, in the first embodiment of the present invention, the height of the side border 56 may be selectively applied to the same as the height of the front and rear edges, or to lower the side border as in the prior art.

In addition, the cross-sectional area of one end 61 and the second opening 33 of the connection unit 60 is smaller than the cross-sectional area of the auxiliary suction port 53 so that a relatively large dust is caught on the auxiliary suction port 53 so that the connection unit 60 is connected. The dust trapped inside can be minimized.

In this way, the noise generated by the disturbance of the flow of air flowing along the guide passage can be reduced without degrading the suction performance of the vacuum cleaner.

Hereinafter will be described the operation of the vacuum cleaner according to the present invention configured as described above.

When the vacuum cleaner is driven, a suction force is generated, and the suction body 20 sucks air including dust on the cleaning surface.

At this time, the air flowing from the front, rear, side of the suction body 20 is introduced into the suction body 20 through the main suction port 51 along the guide flow path 52.

The guide flow path 52 causes flow disturbance due to the air flowing from the front, the rear, and the side, and a part of the air flowing into the main intake port 51 along the guide flow path 52 through the auxiliary intake port 53. By bypassing the main suction port 51 and flowing into the suction duct 30, the noise may be reduced by reducing the flow disturbance on the guide flow path 52.

Next, a vacuum cleaner according to a second embodiment of the present invention will be described.

The same configuration as the first embodiment of the present invention will be given the same reference numerals and the description thereof will be omitted.

6 is a perspective view showing a state in which the suction plate and the suction duct of the vacuum cleaner according to the second embodiment of the present invention are combined.

The cover part 40 and the suction duct 30 of the suction body 20 of the vacuum cleaner according to the second embodiment of the present invention are the same as the first embodiment of the present invention, and the suction plate 70 and the connection unit ( There is a slight difference in the configuration of 80).

As shown in FIG. 6, the suction plate 70 is provided with a plurality of auxiliary suction ports 73 at positions corresponding to the main suction holes 71.

That is, a plurality of auxiliary suction ports 73 are formed at predetermined intervals along each of the guide passages 72 on both sides of the main suction port 71.

At this time, the connection unit 80 has a substantially rectangular first connection portion 81 having a hollow inside so that air flowing into the plurality of auxiliary suction ports 73 formed at one side of the main suction port 71 can be collected into a single space. And a second connector 82 connecting one side of the first connector 81 to the second opening 33 of the suction duct 30.

Therefore, the amount of air sucked through the auxiliary suction port 73 is increased as compared with the preferred embodiment, it is possible to improve the noise reduction effect on the guide passage (72).

Next, a vacuum cleaner according to a third embodiment of the present invention will be described.

Unlike the first and second embodiments, the third embodiment of the present invention is provided with a configuration capable of reducing the noise of the guide channel without using the connecting unit.

7 is a perspective view of the suction body included in the vacuum cleaner according to the third embodiment of the present invention as viewed from below.

The suction body 20 ″ according to the third embodiment of the present invention includes a cover part 40 forming an appearance and a suction port 91 provided on a lower surface of the cover part 40 to suck foreign substances on a cleaning surface. And a suction duct 30 'for guiding the air including the suction plate 90 and the dust sucked from the suction plate 90 to the connecting pipe 11 side.

In the third embodiment, the auxiliary suction port is not formed in the suction plate, and the second opening is not formed in the hinge axis of the suction duct.

The suction plate 90 forming the bottom surface of the suction body 20 '' of the third embodiment is recessed from the bottom surface of the suction plate 90 to guide the flow of air to the suction port 91 side formed at least one in the center thereof. The guide flow path 92 formed is formed.

The guide channel 92 is symmetrically formed in the transverse direction of the suction plate 90 so as to extend from the suction port 91 to both end portions of the suction plate.

Stepped parts 93, 94, and 95 are formed at the edge of the guide channel, and the stepped parts are formed in the transverse side ends of the stepped parts 93.94 and the guide channel 92 formed at the front and rear of the guide channel 92. The jaw portion 95 is formed at substantially the same height.

Therefore, in the vacuum cleaner according to the related art, the side edge side opening of the suction plate formed to suck air from the side is removed, and the height of substantially the same height as the stepped portions 93 and 94 of the front and rear of the guide channel 92. By forming the side step portion 95 it is possible to reduce the noise by reducing the air flow flowing into the side (D direction) which was one factor of the generation of noise.

8 is a view showing the noise of the vacuum cleaner according to the third embodiment of the present invention and the vacuum cleaner according to the prior art.

Since the vacuum cleaner according to the related art is formed with a lateral suction part to improve the lateral cleaning performance, the flow disturbance increases in the guide flow path by the air flowing from the front, the rear, and the lateral direction, so that the vacuum cleaner of FIG. The same noise distribution is formed.

In contrast, in the third embodiment of the present invention, unlike the prior art, the step portion 95 is formed at the horizontal side end portion of the guide flow path 92 to reduce the amount of air flowing in the lateral direction, which is the main cause of the flow disturbance. By forming a noise distribution as shown in (b) there is an effect that can reduce the noise compared to the prior art.

That is, the maximum noise generated in the vacuum cleaner according to the prior art was 53 dBA as in part I of FIG. 8 (a), but the maximum noise of the vacuum cleaner according to the present invention was 49bBA as in part I ′ of FIG. 8 (b). The noise is reduced.

As described above, the stepped portion formed at the edge of the guide flow path on the side is formed in the same manner as in the first and second embodiments as shown in the first and second embodiments, so that the noise reduction effect can be improved.

In addition, it is easily understood by those skilled in the art that the connection unit according to the present invention is not limited to the above-described form and can be provided with various configurations that can communicate the guide flow path and the suction duct.

In addition, the shape of the guide flow path may also be made in a variety of forms, it is of course possible to have a variety of configurations that can simplify the direction of the air flowing into the guide flow path.

In addition, the embodiment of the present invention has been described as an example of a vacuum cleaner in which the main body and the suction body are separated, it will be apparent to those skilled in the art that the present invention can be applied to a vacuum cleaner in which the main body and the suction body are integrally formed.

1 is a schematic diagram of a vacuum cleaner according to a first embodiment of the present invention.

2 is an exploded perspective view showing the configuration of the suction body of the vacuum cleaner according to the first embodiment of the present invention.

3 is a perspective view showing a state in which the suction plate and the suction duct of FIG.

4 is a perspective view of the suction body included in the vacuum cleaner according to the first embodiment of the present invention as viewed from below.

5 is a cross-sectional view showing the flow of the suction body of the vacuum cleaner according to the first embodiment of the present invention.

6 is a perspective view showing a state in which the suction plate and the suction duct of the vacuum cleaner according to the second embodiment of the present invention are combined.

7 is a perspective view of the suction body included in the vacuum cleaner according to the third embodiment of the present invention as viewed from below.

8 (a) and 8 (b) are diagrams showing the noise of the vacuum cleaner according to the third embodiment of the present invention and the vacuum cleaner according to the prior art.

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

10: main body 20: suction

30: suction duct 31: hinge shaft

32: first opening 33: second opening

40: cover 50: suction plate

51: main inlet 52: guide euro

53: auxiliary suction port 56: side border

60: connection unit

Claims (12)

A suction plate including a main suction port for sucking dust on a cleaning surface, and a guide channel for guiding air to the main suction port side; A suction duct in communication with the main suction port, And a connecting unit communicating the guide channel with the suction duct such that a part of the air on the guide channel bypasses the main suction port and flows into the suction duct. The method of claim 1, An auxiliary suction port is formed in the guide flow path, The suction duct includes a first opening communicating with the main suction opening, and a second opening communicating with the auxiliary suction opening by the connection unit. The method of claim 2, The guide flow path is formed in the horizontal direction of the suction plate, the main suction port is provided at least one in the center of the guide flow path, the auxiliary suction port is characterized in that provided in at least one pair on both sides of the guide flow path. Vacuum cleaner. The method of claim 2, The suction duct has a hinge axis to be rotated at a predetermined angle with respect to the suction plate, And said second opening is formed in said hinge shaft. The method of claim 1, The auxiliary suction port is formed in a plurality corresponding to both sides of the main suction port, The connecting unit includes a first connection part for communicating air introduced into the plurality of auxiliary suction ports, and a second connection part for guiding the air to the suction duct. The method of claim 1, The guide flow passage is recessed from the bottom surface of the suction plate, characterized in that the vacuum cleaner, characterized in that the edge region of the guide flow passage is formed at substantially the same height. A vacuum cleaner comprising a suction body having a suction port for sucking dust and the like on a cleaning surface, The suction body includes a guide channel recessed from the bottom surface of the suction body to guide the flow to the suction port side, the vacuum cleaner, characterized in that the stepped portion formed on the edge of the guide channel. The method of claim 7, wherein The guide flow path is formed long in the longitudinal direction, Stepped vacuum cleaner comprising a side stepped portion formed on both ends of the guide flow path for reducing the inflow of the air in the lateral direction of the suction body. The method of claim 7, wherein The suction body has a guide passage for cooling the air flow and at least one main suction port provided at a central side of the guide passage for sucking dust of a cleaning surface, and an auxiliary suction hole spaced apart from the main suction port by a predetermined distance; ; A suction duct having a first opening communicating with said at least one main suction opening and a second opening communicating with said at least one auxiliary suction opening; And a connecting pipe connecting the auxiliary suction port and the second opening. A suction plate having a guide channel for guiding the flow of air, at least one main suction port provided at a central side of the guide channel to suck dust from a cleaning surface, and an auxiliary suction port spaced apart from the main suction port by a predetermined distance; A suction duct having a first opening communicating with said at least one main suction opening and a second opening communicating with said at least one auxiliary suction opening; And a connecting pipe connecting the auxiliary suction port and the second opening. A suction plate having a guide flow path formed in a predetermined depth to guide the flow of air, and at least one main suction hole formed on the guide flow path to suck in dust and the like; A suction duct for guiding dust, etc. introduced through the main suction hole; And the suction plate includes at least one auxiliary suction port spaced apart from the at least one main suction port by a predetermined distance to reduce noise generated by the flow of air on the guide channel. The method of claim 11, And a connecting unit for allowing the air sucked through the auxiliary suction port to bypass the main suction port and flow into the suction duct.

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