KR20060129758A - Vacuum cleaner - Google Patents

Abstract

A vacuum cleaner is provided to reduce noise by surrounding a blower unit with a guide member, spirally forming a shutoff passage, gradually increasing the sectional area of the shutoff passage and communicating a resonant chamber and the shutoff passage with a communication hole of the guide member. A vacuum cleaner includes a body(10) having a discharge port for discharging clean air, a blower unit(20) embedded in the body to generate suction force and blowing force, a discharge passage(42) formed in the body to guide air discharged from the blower unit to the discharge port, and a shutoff passage partly forming the discharge port, surrounding the outside of the blower unit and shutting off noise of the blower unit. The shutoff passage is spirally formed to surround the outside of the blower unit. The radius of the shutoff passage is gradually increased, and the guide member is spirally arranged outside the blower unit.

Description

Vacuum Cleaner {VACUUM CLEANER}

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

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

Figure 3 is a plan 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 unit 21: blower fan

22: motor 23: blower unit case

23a: fan accommodating part 23b: motor accommodating part

23c: suction port 23d: discharge port

24: dustproof member 30: dust collecting unit

40: duct unit 41: suction flow path

42: discharge passage 42a: blocking passage

43: guide member 44: sound absorbing material

45: resonance room 46: hall

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

In general, a vacuum cleaner generates a suction force and sucks foreign substances such as dust together with air, and filters the foreign substances from the inside and discharges only the air back to the outside so that cleaning can be performed.

Conventional vacuum cleaners include a blower unit for generating suction force and blowing force inside the main body forming an exterior as described in Korean Patent Application No. 10-2000-55691, and a dust collecting unit for filtering foreign matter from the sucked air, Inhale the foreign matter into the main body together with the air by the suction force generated by the blower unit, filter the foreign matter through the dust collecting unit provided in the main body, and then discharge only the air through the outlet provided in the rear of the main body so that cleaning can be performed. One device.

The blowing unit includes a blowing fan that rotates and generates a blowing force, and a motor that rotates the blowing fan so that air generated as the blowing fan rotates by the motor flows. Since the air flows through the suction force and the blowing force in the process, in the blowing unit, the motor and the blowing fan inevitably generate noise and vibration in the blowing fan.

By the way, the conventional vacuum cleaner has a problem that the noise of the blowing unit generated in the blowing unit is transmitted to the outside as it is through the outlet because the length of the discharge passage for guiding the discharge of the air discharged from the blowing unit is short.

In addition, the vacuum cleaner of the related art has a structure in which the discharge flow path suddenly changes the flow direction of the air, and also has a structure in which the cross-sectional area of the discharge flow path is rapidly expanded / reduced, so that the flow path resistance acting on the discharge flow path is very large. There is a problem that noise caused by resistance occurs.

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 external transmission of the blowing unit noise through the outlet.

In addition, an object of the present invention is to provide a vacuum cleaner that can reduce the flow path resistance acting on the discharge flow path to reduce the noise generated by the flow path resistance.

The present invention for achieving the above object, the main body is provided with a discharge port for discharging the purified air to form an external appearance, a blowing unit built in the main body to generate a suction force and a blowing force, provided in the main body and discharged from the blowing unit It characterized in that it comprises a discharge passage for guiding the air to the discharge port, and forming a portion of the discharge passage to surround the outside of the blowing unit to block the external transmission of the blowing unit noise.

In addition, the blocking flow path is characterized in that it is formed in a spiral shape surrounding the outer side of the blowing unit.

In addition, the blocking flow path is formed to have a gradually increasing radius is characterized in that it is provided by a helical guide member disposed on the radially outer side of the blowing unit.

In addition, the duct member is formed to have a substantially rectangular shape and is accommodated in the main body and the guide member is disposed inside the resonance chamber provided in the corner portion of the duct member to attenuate the noise transmitted through the blocking flow path, It is characterized in that it further comprises a hole provided in the guide member for communicating the resonance chamber and the blocking flow path.

In addition, the blower unit includes a blower fan for generating suction force and blower force, and a motor for rotating the blower fan therein, wherein the blower fan and the motor are up and down so that the axial direction thereof substantially coincides with the gravity direction. It is characterized by arrange | positioning in the direction.

In addition, the cross-sectional area of the blocking flow passage is characterized in that it is formed to gradually increase from the blowing unit side to the outlet side.

In addition, the blocking passage is characterized in that the sound absorbing material for sucking the noise transmitted through the blocking passage is disposed.

In addition, the vacuum cleaner according to the present invention, the main body is provided with a blower unit that forms the appearance and generates a suction force and blowing force therein is provided with a discharge port through which the filtered air is discharged, and the air discharged from the blower unit as an outlet It is characterized in that it comprises a discharge passage for guiding, and is formed in a spiral form to form a part of the discharge passage to block the external transmission of the blowing unit noise.

Hereinafter, a preferred 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 receives suction and foreign substances sucked through the suction body 11 and the suction body 11 by receiving suction force and sucks foreign substances such as dust together with air. 11) after receiving the foreign matter is composed of the main body 10 to discharge only the air back to the outside.

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. The handle 14 is provided between the user 12 and the connecting pipe 13 so as to be held by the user. The connection hose 12 is formed of a corrugated pipe which can be easily bent, and one end thereof is installed in the main body 10, and the other end thereof is installed in the handle 14 so that the suction body 11 is centered on the main body 10. It allows to move freely within a certain radius, the connecting pipe 13 is formed of a rigid tube of a predetermined length, one end of which is installed on the suction body (11) and the other end is installed on the handle (14) Keep the floor clean of debris while you are there.

As shown in FIG. 2, one end of the connection hose 12 is installed at the front side of the main body 10 to receive foreign substances and air sucked through the suction body 11, and foreign substances at the rear side of the upper surface thereof. A discharge port 10a is provided to allow the filtered air to be discharged to the outside of the main body 10 again. The main body 10 has a blowing unit 20 for generating suction and blowing force and a dust collecting unit 30 for filtering foreign matter from the air sucked into the inside by the blowing unit 20, the interior of the main body 10 The space is partitioned by a dust collecting chamber 10b in which the dust collecting unit 30 is installed and a suction chamber 10c in which the blowing unit 20 is installed so that the blowing unit 20 and the dust collecting unit 30 can be installed. Is partitioned by). The partition 10d is provided with an inlet hole 10e through which the foreign matter filtered by the dust collecting unit 30 can be introduced into the suction chamber 10c.

In the present embodiment, the dust collecting unit 30 is disposed so as to cover the bag-shaped dust bag 31 whose opening is connected to the connection hose 12 and the inlet hole 10e, and is primarily formed by the dust bag 31. An auxiliary filter 32 that filters the filtered air again is disposed.

The blowing unit 20 includes a blowing fan 21 for generating suction and blowing power, a motor 22 for rotating the blowing fan 21, and a blowing fan 21 and a motor 22 housed therein. And a blowing unit case 23, and the blowing unit case 23 is divided into a fan accommodating part 23a in which the blowing fan 21 is accommodated and a cylindrical motor accommodating part 23b in which the motor 22 is accommodated. have.

At this time, in order to suck the foreign matter into the main body 10 together with the air by the blowing unit 20, the blowing fan 21 should be rotated at high speed to generate a high suction force, and if the blowing fan 21 is rotated at high speed, A large amount of heat is generated in the motor 22. Therefore, in the blower unit 20 applied to the vacuum cleaner as in the present invention, the air discharged from the blower fan 21 passes through the motor accommodating part 23b so as to cool the heat generated by the motor 22, and the motor accommodating part. The motor 22 installed in the 23b is cooled. To this end, a fan inlet 23c of the blower unit 20 is provided with a suction port 23c for allowing air to be sucked into the blower unit case 23, and the motor 22 is provided on an outer circumferential surface of the motor receiver 23b. A plurality of discharge ports 23d are provided to allow the air passed through the air to be discharged from the blower unit 20.

In the present embodiment, the blowing unit 20 is vertically disposed long so that the axes of the blowing fan 21 and the motor 22 face the up and down direction. Thus, the rotation centers of the blowing fan 21 and the motor 22 are vertically up and down. When disposed to face in the direction, gravity acting on the respective parts of the blower fan 21 and the motor 22 moves up and down to be symmetrical with respect to the axes of the blower fan 21 and the motor 22, so that the blower fan 21 And the rotation of the motor 22 is made to be stable, thereby reducing the noise generated in the blowing unit (20).

Both ends of the air blowing unit 20 are formed of a material having elastic force such as rubber so as to attenuate vibration generated in the process of operating the air blowing unit 20, and the dustproof member 24 elastically supporting both ends of the air blowing unit 20. Is provided. In this embodiment, since the blower unit 20 is vertically disposed long, the dustproof member 24 is to elastically support the top and bottom of the blower unit 20.

In the suction chamber 10c in which the blower unit 20 is installed, the blower unit 20 is accommodated therein so as to guide the air flowing by the blower unit 20, and the intake air is sucked into the blower unit 20. The duct unit 40 provided with the suction flow path 41 which guides to 23c, and the discharge flow path 42 which guides the air discharged from the discharge port 23d to the discharge port 10a, respectively is provided.

The discharge passage 42 is provided with a blocking passage 42a for blocking external transmission of noise of the blowing unit 20 generated during the operation of the blowing unit 20, and a blocking passage provided at the rear of the duct unit 40. A rear flow passage 42b for guiding the air passing through the 42a to the upper discharge port 10a is included.

Among these, the blocking flow passage 42a is disposed to surround the outside of the blowing unit 20, which allows the guide member 43 forming the blocking flow passage 42a to act as a sound insulating material to block the transmission of sound. When the guide member 43 is disposed to surround the outside of the blower unit 20 to form the blocking passage 42a, the radial outer side of the blower unit 20 is covered by the guide member 43. Therefore, the blowing unit 20 will be able to reduce the external transmission of noise.

In addition, some of the noise of the blowing unit 20 is transmitted to the discharge port 10a along the discharge passage 42 similarly to the air discharged from the blowing unit 20 and is transmitted to the outside through the discharge port 10a. Accordingly, the vacuum cleaner according to the present invention gradually increases the guide member 43 so that the noise of the blowing unit delivered along the discharge passage 42 is attenuated in the course of passing through the blocking passage 42a. It is formed in a spiral shape having a radius so that the blocking flow path (42a) is formed in a spiral shape on the outside of the blower unit (20).

This is to take advantage of the fact that the sound is gradually attenuated as the delivery distance increases when the sound is delivered through the air, which is a compressive fluid, and the sound is reduced. As described above, the blocking flow path 42a is formed in a spiral shape. By using a limited small space it is possible to obtain the same effect as the distance between the blowing unit 20 and the outlet 10a sufficiently long, so that the blowing unit 20 noise in the process of passing through the blocking passage 42a The noise of the blowing unit 20 which is attenuated and transmitted to the outside through the outlet 10a is reduced.

In addition, when the blocking flow path 42a is formed in a spiral shape as described above, the noise transmitted through the blocking flow path 42a with directionality strikes the surface of the guide member 43 formed in the spiral shape, and a part thereof is the guide member 43. Absorption and a part of the reflection is repeated, so that the noise of the blower unit 20 is attenuated in the process of being transmitted through the blocking passage 42a. At this time, in the blocking passage 42a, a sound absorbing material 44 having an ability to absorb sound is disposed in order to allow the noise to be absorbed and attenuated more efficiently in the process of transmitting the noise through the blocking passage 42a. In this embodiment, the sound absorbing material 44 is disposed in a portion of the outlet side of the blocking flow passage 42a located on the outlet 10a side.

In addition, since the air discharged from the blower unit 20 is guided by the guide member 43 having a curved surface in the blocking passage 42a, the flow direction is gradually changed, so that the air flowing direction is blocked by the blocking passage 42a. Although the flow path resistance acts even if switched, the noise generated in the blocking flow path 42a by the flow path resistance is maintained at a minimal level. In this embodiment, the cross-sectional area of the blocking flow path 42a proceeds from the inlet side located on the blower unit 20 side to the outlet side located on the outlet 10a side in order to more effectively prevent noise generation due to the flow path resistance. It is formed to increase gradually, so that the flow path resistance of the blocking flow path 42a can be further reduced.

In addition, the duct unit 40 applied to the vacuum cleaner according to the present invention is formed to have a substantially rectangular cross section, and the guide member 43 provided inside the duct unit 40 is formed in a spiral shape so that the duct unit ( An empty space is generated between the edge of the 40 and the guide member 43. The vacuum cleaner according to the present invention utilizes this space to more effectively attenuate noise. A resonance chamber 45 is provided between the corner portion and the guide member 43, and the air blowing unit is connected to the guide member 43 through the blocking passage 42a by communicating with the blocking passage 42a and the resonance chamber 45. A hole 46 is provided to allow a part of the noise of the 20 to flow into the resonance chamber 45. Therefore, some of the noise transmitted along the blocking passage 42a is introduced into the resonance chamber 45 through the hole 46 and is attenuated by resonance. Therefore, the noise transmitted to the outside through the outlet 10a may be further reduced. It becomes possible.

In the present embodiment, the dust bag 31 and the auxiliary filter 32 are provided as the dust collecting unit 30, but various types of dust collecting units such as a cyclone dust collecting device for collecting dust in a cyclone manner may be used. .

As described above in detail, the vacuum cleaner according to the present invention is formed so that the guide member forming the blocking flow path surrounds the outside of the blowing unit, and thus the guide member performs the same role as the sound insulating material to block the transmission of sound blowing unit. There is an effect of reducing the external transmission of noise.

In addition, since the vacuum cleaner according to the present invention can obtain an effect such that the blocking flow path is formed in a spiral shape on the outside of the blower unit to lengthen the length of the discharge flow path in a limited space, the blower unit is transferred to the outside through the discharge port. There is an effect to reduce the noise.

In addition, the vacuum cleaner according to the present invention is formed so that the blocking flow path is formed in a spiral shape to gradually change the flow direction of the air, so that the cross-sectional area of the blocking flow path gradually increases from the inlet side to the outlet side of the blocking flow passage. Therefore, there is an effect of reducing the noise generated by the flow path resistance and the flow path resistance.

In addition, the vacuum cleaner according to the present invention is provided with a resonance chamber at the corners of the duct unit, and the guide member is provided with a hole for communicating the resonance chamber and the blocking flow path, so that part of the blowing unit noise transmitted along the blocking flow path makes the hole. Since the attenuation through the resonance chamber is attenuated by resonance phenomena, there is an effect of reducing the noise of the blowing unit transmitted to the outside.

Claims (14)

A main body provided with a discharge port through which the purified air is discharged, an air blowing unit built in the main body to generate suction and blowing power, and a discharge flow path provided in the main body to guide the air discharged from the air blowing unit to the discharge port And a blocking passage forming a part of the discharge passage and surrounding the outside of the blowing unit to block external transmission of the blowing unit noise. The method of claim 1, The blocking flow path is a vacuum cleaner, characterized in that formed in a spiral shape surrounding the outside of the blowing unit. The method of claim 2, The blocking flow path is a vacuum cleaner, characterized in that it is formed to have a gradually increasing radius is provided by a spiral guide member disposed in the radially outer side of the blowing unit. The method of claim 3, wherein A duct member which is formed to have a substantially rectangular shape and is accommodated in the main body, and the guide member is disposed inward, and a resonance chamber provided at an edge of the duct member to attenuate noise transmitted through the blocking passage; And a hole provided in the guide member to communicate the resonance chamber with the blocking flow path. The method of claim 1, The blower unit includes a blower fan for generating suction force and blower force, and a motor for rotating the blower fan, wherein the blower fan and the motor are vertically aligned so that their axial direction substantially coincides with the gravity direction. The vacuum cleaner which is arrange | positioned. The method of claim 1, And the cross-sectional area of the blocking flow passage is formed to gradually increase from the blower unit side to the outlet side. The method of claim 1, The vacuum cleaner, characterized in that the sound absorbing material for sucking the noise transmitted through the blocking flow path is disposed. The main body is provided with a blower unit that generates suction force and blower force to form an exterior and has a discharge port through which foreign substances are filtered out, a discharge passage for guiding the air discharged from the blower unit to the discharge hole, and formed in a spiral shape. And forming a part of the discharge passage to block the external passage of the blowing unit noise. The method of claim 8, The blocking flow passage is vacuum cleaner, characterized in that provided to surround the outside of the blowing unit. The method of claim 9, The blocking flow path is a vacuum cleaner, characterized in that it is formed to have a gradually increasing radius is provided by a spiral guide member disposed in the radially outer side of the blowing unit. The method of claim 10, A duct member which is formed to have a substantially rectangular shape and is accommodated in the main body, and the guide member is disposed inward, and a resonance chamber provided at an edge of the duct member to attenuate noise transmitted through the blocking passage; And a hole provided in the member to communicate the resonance chamber with the blocking flow path. The method of claim 8, The blower unit includes a blower fan for generating suction force and blower force, and a motor for rotating the blower fan, wherein the blower fan and the motor are vertically aligned so that their axial direction substantially coincides with the gravity direction. The vacuum cleaner which is arrange | positioned. The method of claim 8, And the cross-sectional area of the blocking flow passage is formed to gradually increase from the blower unit side to the outlet side. The method of claim 8, The vacuum cleaner, characterized in that the sound absorbing material for sucking the noise transmitted through the blocking flow path is disposed.

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