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KR950033312A - Variable frequency sound absorption device for air conditioning duct - Google Patents

Variable frequency sound absorption device for air conditioning duct Download PDF

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Publication number
KR950033312A
KR950033312A KR1019940023711A KR19940023711A KR950033312A KR 950033312 A KR950033312 A KR 950033312A KR 1019940023711 A KR1019940023711 A KR 1019940023711A KR 19940023711 A KR19940023711 A KR 19940023711A KR 950033312 A KR950033312 A KR 950033312A
Authority
KR
South Korea
Prior art keywords
noise
resonator
duct
frequency
air conditioning
Prior art date
Application number
KR1019940023711A
Other languages
Korean (ko)
Inventor
서상호
이내영
Original Assignee
이헌조
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이헌조, 엘지전자 주식회사 filed Critical 이헌조
Publication of KR950033312A publication Critical patent/KR950033312A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)

Abstract

본 발명은 공조덕트의 소음 저가장치에 관한 것으로, 특히 사용자가 원하는 임의의 주파수대의 소음을 저감시키고자 한 공조덕트용 가변주파수 흡음장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-cost device for air conditioning ducts, and more particularly, to a variable frequency sound absorbing device for air conditioning ducts for reducing noise of an arbitrary frequency band desired by a user.

종래의 흡음장치는 덕트에 구성되어 있는 공명기에 의해 덕트를 통해 전달되는 특정주파수 소음은 반위상 동일크기의 음과 서로 간섭 소거되는 현상 즉, 헤름홀쯔 공명기(Helmholtz resonator)를 응용하여 특정주파수대의 소음만을 저감시키는 것이나, 종래의 흡음장치는 특정한 주파수만을 저감시키는 장치로 외부조건 등의 변동으로 인하여 소음특성 주파수가 공명기의 공명주파수보다 클 경우에는 사용할 수 없고, 또한 사용자가 원하는 주파수대의 소음을 저감시키려면 별도의 장치를 구성해야 하는 문제점이 있었다.In the conventional sound absorbing device, the specific frequency noise transmitted through the duct by the resonator constituted in the duct is canceled by the interference of the phase of the same phase, that is, the noise of the specific frequency band by applying the Helmholtz resonator. However, the conventional sound absorbing device reduces the specific frequency only and cannot be used when the noise characteristic frequency is larger than the resonance frequency of the resonator due to fluctuations in external conditions. In order to solve this problem, a separate device must be configured.

본 발명은 이와 같은 문제점을 해결하기 위하여 덕트를 통하여 전파되는 가변되는 소음특성 주파수에 따라 공명기의 체적 및 소음을 흡음할 수 있는 면적이나 연결관의 길이를 가변시켜 주므로서, 흡음할 수 있는 주파수 대에서 사용자가 원하는 임의의 소음의 주파수를 소거시킬 수 있게 되는 것이다.The present invention is to solve the problem, by varying the volume of the resonator and the area capable of absorbing noise or the length of the connection tube according to the variable noise characteristic frequency propagated through the duct, It is possible to cancel the frequency of any noise desired by the user.

Description

공조덕트용 가변주파수 흡음장치Variable frequency sound absorption device for air conditioning duct

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명 공조덕트용 가변주파수 흡음장치 제1실시예의 구성도, 제4도는 본 발명 공조덕트용 가변주파수 흡음장치 제1실시예의 소음 저감결과를 보인 그래프, 제5도는 본 발명 공조덕트용 가변주파수 흡음장치 제2실시예의 구성을 보인 분리사시도.3 is a configuration diagram of the first embodiment of the variable frequency sound absorber for the air conditioning duct of the present invention, and FIG. 4 is a graph showing the noise reduction results of the first embodiment of the variable frequency sound absorber for the air conditioning duct of the present invention, and FIG. Separate perspective view showing the configuration of a variable frequency sound absorbing device according to a second embodiment.

Claims (3)

덕트(12)에 구성되어 있는 공명기(11)의 체적(V)을 가변시킬 수 있도록 피스톤(14)을 구성하여 공명기(11)의 체적(V)을 가변하여 소음의 주파수 대역에 따라 저감시킬 수 있도록 구성된 것을 특징으로 하는 공조덕트용 가변주파수 흡음장치.The piston 14 may be configured to vary the volume V of the resonator 11 of the duct 12, and thus the volume V of the resonator 11 may be varied to reduce the noise according to the frequency band of the noise. Variable frequency sound absorption device for air conditioning ducts, characterized in that configured to. 공명기(21)와 덕트(22)가 연결되어 공명기(21)가 흡음할 수 있는 면적을 가변할 수 있도록 덕트(22)와 공명기(21)를 연결하는 연결관(23)에 피스톤(24)을 구성하여 소음의 주파수 대역에 따라 저감시킬 수 있도록 구성된 것을 특징으로 하는 공조덕트용 가변주파수 흡음장치.The resonator 21 and the duct 22 are connected so that the piston 24 is connected to the connecting pipe 23 connecting the duct 22 and the resonator 21 so as to vary the area that the resonator 21 can absorb. The variable frequency sound absorption device for air conditioning ducts, characterized in that configured to reduce according to the frequency band of the noise. 공명기(31)와 덕트(32) 사이의 연결길이를 가변시킬 수 있도록 제1연결관(33), 2개 이상의 연결관을 구성하여, 연결관길이(L3)을 가변시키므로서, 덕트(32)내의 매체를 통하여 전달되는 소음의 주파수를 저감시킬 수 있도록 구성된 것을 특징으로 하는 공조덕트용 가변주파수 흡음장치.The first connecting pipe 33 and two or more connecting pipes are configured to vary the connecting length between the resonator 31 and the duct 32, thereby varying the connecting pipe length L3, so that the duct 32 Variable frequency sound absorption device for air conditioning ducts, characterized in that configured to reduce the frequency of the noise transmitted through the medium. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940023711A 1994-05-06 1994-09-16 Variable frequency sound absorption device for air conditioning duct KR950033312A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2019940010037U KR950033906U (en) 1994-05-06 1994-05-06 Variable frequency sound absorption device for air conditioning duct
KR94-10037 1994-05-06

Publications (1)

Publication Number Publication Date
KR950033312A true KR950033312A (en) 1995-12-22

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
KR2019940010037U KR950033906U (en) 1994-05-06 1994-05-06 Variable frequency sound absorption device for air conditioning duct
KR1019940023711A KR950033312A (en) 1994-05-06 1994-09-16 Variable frequency sound absorption device for air conditioning duct

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR2019940010037U KR950033906U (en) 1994-05-06 1994-05-06 Variable frequency sound absorption device for air conditioning duct

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KR (2) KR950033906U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100879198B1 (en) * 2008-08-25 2009-01-16 현대산업개발 주식회사 Bathroom Silencer
KR20210152652A (en) 2020-06-09 2021-12-16 동신대학교산학협력단 Resonator with variable frequency domain

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100261051B1 (en) * 1997-06-03 2000-07-01 선우중호 A sound absorber
CN110530028B (en) * 2019-09-23 2023-09-26 珠海格力电器股份有限公司 Shell, water heater and noise reduction control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100879198B1 (en) * 2008-08-25 2009-01-16 현대산업개발 주식회사 Bathroom Silencer
KR20210152652A (en) 2020-06-09 2021-12-16 동신대학교산학협력단 Resonator with variable frequency domain

Also Published As

Publication number Publication date
KR950033906U (en) 1995-12-18

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