SUCTION UNIT

摘要

A suction unit includes a suction motor for generating air flow; a noise reduction unit which surrounds the suction motor and acts as a resonator in order to reduce noise generated during the operation of the suction motor; and a motor chamber which surrounds the noise reduction unit. The noise reduction unit includes an air flow path which provide a path of air flowing by the suction motor, a noise reduction chamber for eliminating the noise of at least one frequency band, and at least one communicating hole which causes sound wave of the noise to enter the noise reduction chamber. The air flow path is divided from the noise reduction chamber and thus the sound wave of the noise enters the noise reduction chamber through the communicating hole during a process in which air passes through the air flow path.

主权项

1. A suction unit, comprising:
a suction motor that is configured to move air; a noise reduction unit that is configured to receive the suction motor, that is configured to reduce noise generated during operation of the suction motor by acting as a resonator, and that defines (i) an air flow path for air moved by the suction motor, (ii) a noise reduction chamber that is configured to reduce noise in at least one frequency band, and (iii) at least one communicating hole that guides noise to the noise reduction chamber; and a motor chamber that is configured to receive the noise reduction unit, wherein the air flow path is separated from the noise reduction chamber, and wherein the noise reduction chamber is configured to receive noise through the communicating hole based on air flowing through the air flow path.