Vacuum cleaner

Abstract

A vacuum cleaner for reducing noise from being transmitted to the exterior. The vacuum cleaner includes a main body forming an outer appearance of the vacuum cleaner and including a blower unit for generating suction force and blowing force and a discharge hole through which purified air from which foreign matter has been filtered is discharged, a discharge passage for guiding air discharged from the blower unit to the discharge hole, and a spiral shaped intercepting passage for forming a part of the discharge passage and for preventing noise of the blower unit from being transmitted to the exterior. A guide member forming the intercepting passage is disposed at the outside of the blower unit and serves as an acoustic absorber so that noise transmission to the exterior is reduced.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of Korean Patent Application No. 2005-50396, filed on Jun. 13, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a vacuum cleaner. More particularly, to a vacuum cleaner with minimal noise output. [0004] 2. Description of the Related Art [0005] Generally, a conventional vacuum cleaner is a device for cleaning by suctioning foreign matter such as dust together with air by generating a suction force and for discharging only air to the exterior by filtering the foreign matter. [0006] A conventional vacuum cleaner, as disclosed in Korean Patent Application No. 10-2000-55691, includes a blower unit for generating a suction force and blowing force and a dust collection unit for filtering foreign matter from suctioned air, which are installed in a m...

AI Technical Summary

Benefits of technology

[0010] Accordingly, it is an aspect of the present invention to provide a vacuum cleaner for reducing the transmission of noise generated from a blower unit to an exterior through a discharge hole.

[0012] It is another aspect of the present invention to provide a vacuum cleaner for reducing flow resistance of a discharge passage to decrease noise generated due the flow resistance.

[0013] These and / or other aspects of the present invention are achieved by providing a vacuum cleaner including a main body forming an outer appearance of the vacuum cleaner and including a discharge hole through which purified air is discharged, a blower unit installed in the main body to generate a suction force and a blowing force, a discharge passage installed in the main body to guide air discharged from the blower unit to the discharge hole, and an intercepting passage forming a part of the discharge passage, and enclosing an outer side of the blower unit to prevent noise of the blower unit from being transmitted to the exterior.

[0016] The vacuum cleaner further includes a duct member having a substantially rectangular shape and accommodated in the main body, and wherein the guide member is disposed in the duct member, a resonance chamber formed in a corner of the duct member to reduce noise transmitted through the intercepting passage, and a hole formed in the guide member to communicate the resonance chamber with the intercepting passage.

[0020] It is another aspect of the present invention to provide a vacuum cleaner including a main body forming an outer appearance of the vacuum cleaner and including a blower unit to generate a suction force and a blowing force and a discharge hole through which purified air from which foreign matter has been filtered is discharged, a discharge passage to guide air discharged from the blower unit to the discharge hole, and a spiral shaped intercepting passage forming a part of the discharge passage to prevent noise of the blower unit from being transmitted to an exterior.

Problems solved by technology

As such, since air flows due to the suction force and the blowing force during an operation of the motor and the blower fan, noise and vibration are generated from the motor and the blower fan of the blower unit.

However, in the conventional vacuum cleaner, since a length of a discharge passage for guiding air discharged from the blower unit to be discharged is short, noise generated by the blower unit is directly transmitted to an exterior through the discharge hole.

Moreover, the discharge passage of the conventional vacuum cleaner is structured to rapidly change a flowing direction of air and a cross-section of the discharge passage is sharply increased or decreased and flow resistance of the discharge passage is very large so that noise is generated due to the flow resistance.

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