Active noise cancelation equipment for kitchen hood
The present invention relates to a kitchen hood noise removing device used for a kitchen hood in which an exhaust fan (40) is installed on a hood cover (10), and in which exhaust air of the exhaust fan (40) is connected with an exhaust duct (1) in an exhaust pipe (42). The kitchen hood noise removin...
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Format: | Patent |
Sprache: | eng ; kor |
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Zusammenfassung: | The present invention relates to a kitchen hood noise removing device used for a kitchen hood in which an exhaust fan (40) is installed on a hood cover (10), and in which exhaust air of the exhaust fan (40) is connected with an exhaust duct (1) in an exhaust pipe (42). The kitchen hood noise removing device comprises: a suctioning pipe (20) vertically added in the kitchen hood cover (10) having an internal space becoming narrower toward the top thereof; a speaker (25) installed in a speaker hole (22) formed in one side surface of the suctioning pipe (20), and outputting an antiphase frequency output for removing noise into the suctioning pipe; a microphone (27) installed in the suctioning pipe between the speaker (25) and the exhaust fan (40), and reading in a noise frequency level; a fan base (30) installed to cover the surroundings of the top end of the suctioning pipe (20) and the top end of the hood cover (10), and having a suctioning pipe hole (32) formed in the center thereof; the exhaust fan (40) fixed onto the fan base (30) to make a suctioning unit disposed in the suctioning pipe hole (32) of the fan base (30), and connecting the exhaust duct (1) with the exhaust pipe (42); and a control unit (50) for providing a noise frequency and an antiphase noise removal frequency to the speaker (25) by recognizing the noise frequency read in through the microphone (27).
본 발명은 후드 덮개(10)에 배기팬(40)이 설치되고 배기팬(40)의 배출공기는 배기관(42)에서 배기덕트(1)와 연결되는 주방후드로, 위로 갈수록 내부공간이 줄어드는 주방 후드덮개(10) 내에 수직으로 부가한 흡입관(20); 흡입관(20) 일측면에 형성한 스피커공(22)에 설치되어 소음제거용 역위상의 주파수 출력을 흡입관 내로 출력하는 스피커(25); 스피커(25)와 배기팬(40) 사이의 흡입관(20) 내에 설치되어 소음 주파수레벨을 읽어들이는 마이크(27); 흡입관(20) 상단 주변과 후드덮개(10) 상단을 덮도록 설치되며, 중앙에 흡입관공(32)을 형성한 팬베이스(30); 팬베이스(30)의 흡입관공(32)에 흡입부가 위치하도록 팬베이스(30)위에 고정되고, 배기덕트(1)와 배기관(42)을 연결하는 배기팬(40); 및 마이크(27)를 통하여 읽어들인 소음 주파수를 인식하여 소음주파수와 역상의 소음제거 주파수를 스피커(25)로 제공하는 제어부(50)를 포함하는 주방후드 소음제거장치이다. |
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