KR20060122521A - Vacuum cleaner - Google Patents

Abstract

The present invention relates to a vacuum cleaner that can reduce the noise transmitted to the outside.

The vacuum cleaner according to the present invention relates to a vacuum cleaner having a blower fan unit configured to generate suction and blowing force therein, the blower fan unit being provided with an intake hole through which air is sucked. The blower fan unit includes a suction passage for guiding the air from the front side to the rear side of the blower fan unit and a discharge passage for guiding the air discharged from the blower fan unit to the front side and guides it to the rear side. In the process of the noise generated in the suction passage and the discharge passage is attenuated by the bent portion of the suction passage and the discharge passage, so that there is an effect that the noise transmitted to the outside is reduced.

Description

Vacuum Cleaner {VACUUM CLEANER}

1 is a schematic view showing the overall structure of a vacuum cleaner according to the present invention.

2 is a cross-sectional view schematically showing the internal structure of the main body of the vacuum cleaner according to the present invention.

Explanation of symbols on the main parts of the drawings

10: main body 10a: outlet

10b: dust collecting chamber 10c: suction chamber

20: blower fan unit 20a: blower

21: blower fan 22: motor

40: duct unit 41: suction flow path

42: discharge flow path

The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner that can further reduce vibration and noise.

In general, a suction force is generated to suck foreign matters such as dust together with air, and then to filter foreign matters from the inside. The conventional vacuum cleaner is disclosed in Korean Patent Application No. 10-2000-55691. As shown in the figure, there is a blowing fan unit for generating suction and blowing force inside the main body forming the exterior, and a dust collecting device for filtering foreign matter from the sucked air. It is a device that can be cleaned by inhaling the foreign matter through the dust collector provided in the main body by suction and discharged back to the outside.

At this time, the conventional vacuum cleaner is to suck the air from the front side by the blowing fan unit to filter foreign matter, and to discharge to the rear side, for this purpose, the blowing fan unit sucks air from the front side and discharges it to the rear side I can do it.

By the way, such a conventional vacuum cleaner has a problem that the noise generated during the operation of the blower fan unit is transmitted to the outside as it is with the air discharged to the outside, so that a very loud noise occurs when using the vacuum cleaner.

The present invention is to solve this problem, it is an object of the present invention to provide a vacuum cleaner that can reduce the noise generated during operation of the blower fan unit to the outside.

In order to achieve the above object, the present invention provides a vacuum cleaner having a blower fan unit configured to generate a suction force and a blower force, forming an external appearance thereof, wherein the blower fan unit is provided with an intake hole through which air is sucked. In the main body, each of the intermediate paths is bent to guide the air from the front side to the rear side of the blower fan unit, and the discharge passage for guiding the air discharged from the blower fan unit to the front side and back to the rear side. Characterized in that it comprises a.

In addition, the blowing fan unit is formed of a centrifugal fan to rotate and includes a blowing fan for generating suction and blowing force, and a motor for rotating the blowing fan to generate a rotational force, the center of rotation of the blowing fan and the motor It is disposed in the front-rear direction and inhales air from the rear side to discharge air to the radially outer side.

In addition, the sound absorbing member for absorbing and blocking sound is disposed on the wall surfaces forming the suction passage and the discharge passage, respectively.

In addition, the suction flow passage is provided in the front and rear direction on the upper side of the blowing fan unit, and extends downward from the rear end of the first suction portion and is provided on the front side so that air can be sucked into the blowing fan unit. And a second suction part provided with a suction port.

The discharge passage may further include a first discharge unit configured to collect air discharged from the blower fan unit and guide the air to the front side, a second discharge unit extending downward from a front end of the first discharge unit, and the second discharge unit. It extends from the bottom to the rear side characterized in that it comprises a third suction unit disposed in the lower portion of the blowing fan unit.

Hereinafter, a first embodiment of the vacuum cleaner according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the vacuum cleaner according to the present invention includes a blower fan unit 20 for generating suction force therein and a dust collecting device 30 for collecting foreign substances such as dust from the air sucked into the vacuum cleaner. 10 and a separate body configured to be separate from the main body 10 and receive a suction force from the main body 10 to suck foreign substances together with the air.

A connection hose 12 and a connection pipe 13 are provided between the main body 10 and the suction body 11 so that the suction force generated in the main body 10 can be transmitted to the suction body 11, and the connection hose 12 is provided. ) And the connecting pipe 13 is provided with a handle 14 that can be held by the hand so that the user can easily move. The connection hose 12 is formed of a flexible corrugated pipe or the like, one end of which is installed in the main body 10 and the other end of which is installed in the handle 14 so that the suction body 11 freely within a predetermined radius around the main body 10. It is movable, the connecting pipe 13 is formed to have a predetermined length and one end is installed on the suction body 11 and the other end is installed on the handle 14 so that the user can clean the foreign substances on the floor while standing. do.

The main body 10 has a connection hose 12 connected to the front side thereof, as shown in FIG. 2, to receive air and foreign substances sucked through the suction body 11, and to the rear upper surface of the main body 10. The outlet 10a is provided to allow the air filtered by the dust collecting device 30 to be discharged again to the outside. In addition, the inside of the main body 10 is provided so that the dust collecting chamber 10b is installed dust collecting device 30 and the suction chamber 10c is installed in the blowing fan unit 20, the dust collecting device (10b) 30, a dust bag is disposed, and a blowing fan unit 20 is disposed in the suction chamber 10c. The reference numeral '31' is an auxiliary filter 31 disposed in the dust collecting chamber 10b to filter fine foreign matter from the air sucked into the blowing fan unit 20.

The blower fan unit 20 includes a blower fan 21 for generating suction force and blower power and a motor 22 for rotating the blower fan 21 therein, and a blower for installing the blower fan 21 therein. 20a and a drive unit 20b in which the motor 22 is installed, and the suction passage 41 and the blower fan unit for guiding the air sucked into the blower fan unit 20 in the body 10. A discharge passage 42 for guiding the air discharged from 20 is provided.

At this time, the vacuum cleaner according to the present invention in order to reduce the noise of the blowing fan unit 20 is transmitted to the outside of the shaft of the blowing fan 21 and the motor 22 built in the blowing fan unit 20 The blower fan unit 20 is disposed so as to face the front and rear directions so that the blower fan unit 20 sucks air from the rear side and discharges it outward in the radial direction, and the suction flow path 41 is bent in the middle thereof into the main body 10. The suctioned air can be guided to the rear side of the blower fan unit 20, and the discharge flow path 42 can be bent to guide the air discharged from the blower fan unit 20 to the front side and back to the rear side. Will be. Therefore, the suction passage 41 and the discharge passage 42 are each bent in the middle, and the noise transmitted through the suction passage 41 and the discharge passage 42 is bent in the suction passage 41 and the discharge passage 42. It will be attenuated by wealth.

To this end, the blower fan unit 20 is provided with an intake hole 20c on the rear side of the blower 20a so as to suck air from the rear side, and an exhaust hole through which air is discharged to the outer circumferential surface of the driving unit 20b. 20d) is provided so that air can be sucked from the rear side and discharged radially outward.

In addition, in the present embodiment, in order to form the suction passage 41 and the discharge passage 42 as described above, the blower fan unit 20 is accommodated inside the suction chamber 10c, and the suction passage 41 and the discharge passage ( A duct unit 40 having 42 is formed therein. The blower fan unit 20 is disposed at the center of the duct unit 40, and the suction passage 41 for guiding the air sucked into the blower fan unit 20 is in the front-rear direction on the upper side of the blower fan unit 20. And extending downward from a rear end of the first suction part 41a and the first suction part 41a for guiding air to the rear side, and the air of the first suction part 41a is provided on the front side of the blower fan unit 20. And a second suction part 41b provided with a suction port 41c so as to be sucked into the suction fan, and the discharge passage 42 for guiding the air discharged from the blower fan unit 20 is a blower fan unit. The first discharge part 42a which collects the air discharged radially outward from the 20, and guides it to the front side, and the 2nd discharge part which extends downward from the front end of the 1st discharge part 42a, and guides air downward. 42b and a rear side from the lower end of the second discharge part 42b. It is formed to include a third discharge portion (42c) extending to guide the air to the rear side.

In addition, both ends of the blower fan unit 20 are formed of a material having elastic force such as rubber, so as to elastically support both ends of the blower fan unit 20 to attenuate vibration generated in the blower fan unit 20. In this embodiment, since the blower fan unit 20 is disposed long in the front-rear direction, the dustproof member 23 is configured to elastically support the front and rear ends of the blower fan unit 20.

In addition, the suction passage 41 and the discharge passage 42, the sound-absorbing member for absorbing and blocking the sound in order to more efficiently attenuate the noise of the blowing fan unit 20 transmitted along the discharge passage 42 ( 43). The soundproof member 43 is attached to a wall forming the suction passage 41 and the discharge passage 42, and is installed in the process of transmitting noise through the suction passage 41 and the discharge passage 42. As part of it is absorbed, noise transmitted to the outside is further reduced.

As described in detail above, the vacuum cleaner according to the present invention is bent in the middle of the suction flow path for guiding the air to the blower fan unit and the discharge flow path for guiding the air discharged from the blower fan unit, the noise generated in the blower fan unit Since a portion of the suction passage and the discharge passage hits the bent portion of the suction passage and the discharge passage in the process of being transmitted, the noise transmitted to the outside is reduced.

Claims (5)

In the vacuum cleaner having a blower fan unit for forming an appearance and generating suction force and blowing force therein, The blower fan unit is provided with an intake hole through which air is sucked in its rear side, and the middle of the blower fan unit is bent so as to guide air from the front side to the rear side of the blower fan unit from the blower fan unit. And a discharge passage for guiding the discharged air toward the front side and guiding the discharged air to the rear side again. The method of claim 1, The blower fan unit is formed of a centrifugal fan and rotates, and includes a blower fan for generating suction and blowing force, and a motor disposed at the front side of the blower fan and generating a rotational force to rotate the blower fan. Vacuum cleaner, characterized in that to discharge the radially outward. The method of claim 1, And a soundproof member for absorbing and blocking sound, respectively, on the wall surfaces forming the suction passage and the discharge passage. The method of claim 1, The suction passage is provided with a first suction part provided in the front-rear direction on the upper side of the blower fan unit, and extends downward from a rear end of the first suction unit, and a suction hole is provided at the front side to allow air to be sucked into the blower fan unit. Vacuum cleaner comprising a second suction unit provided. The method of claim 1, The discharge flow path includes a first discharge part that collects air discharged from the blower fan unit and guides it toward the front side, a second discharge part extending downward from a front end of the first discharge part, and a lower end of the second discharge part. And a third suction unit extending toward the rear side and disposed below the blowing fan unit.

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