CN110940083B - Silencing device of fresh air system - Google Patents
Silencing device of fresh air system Download PDFInfo
- Publication number
- CN110940083B CN110940083B CN201911406165.8A CN201911406165A CN110940083B CN 110940083 B CN110940083 B CN 110940083B CN 201911406165 A CN201911406165 A CN 201911406165A CN 110940083 B CN110940083 B CN 110940083B
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- China
- Prior art keywords
- silencing
- air
- air inlet
- baffle
- air outlet
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention provides a silencing device of a fresh air system, which comprises a body, wherein a silencing cavity is arranged in the body, and an air inlet and an air outlet are respectively arranged at two ends of the body; an air inlet silencing structure is arranged at one end of the inner wall of the body, which is positioned at the air inlet side and corresponds to the air outlet; the inner wall of the body is positioned at the air outlet side and corresponds to one end of the air inlet, and an air outlet silencing structure is arranged; the sound absorbing cotton is adhered to the inner wall of the body, the surface of the air inlet silencing structure, the surface of the air outlet silencing structure, the surface of the first baffle silencing plate and the surface of the second baffle silencing plate. The invention has reasonable structural design, designs the air inlet and outlet silencing structures in the limited space of the body, prolongs the path of the air flow to the greatest extent, and effectively increases the contact area of the air flow and the silencing cotton by the arrangement of the baffle silencing plate and improves the silencing effect to the greatest extent.
Description
Technical Field
The invention belongs to the technical field of fresh air equipment, and particularly relates to a silencer of a fresh air system.
Background
Fresh air systems are gradually popularized, household utilization rate is higher and higher, fresh air is obtained through filtering treatment when the fresh air systems work, noise is easy to generate when outdoor air is introduced indoors in actual use, the traditional silencer is mostly of a straight cylinder type, an air inlet and an air outlet are arranged on the same central axis, and noise reduction effect of a sound-reducing box is not ideal. Although the prior art has a staggered structural design form of the air inlet and the air outlet, the noise reduction effect is still not ideal enough, so that the existing fresh air system silencing device needs to be further optimized and improved.
Disclosure of Invention
Therefore, the invention aims to overcome the defects in the prior art and provides a silencing device of a fresh air system.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a silencing device of a fresh air system comprises a body, wherein a silencing cavity is arranged in the body, and an air inlet and an air outlet are respectively arranged at two ends of the body;
an air inlet silencing structure is arranged at one end of the inner wall of the body, which is positioned at the air inlet side and corresponds to the air outlet; the inner wall of the body is positioned at the air outlet side and corresponds to one end of the air inlet, and an air outlet silencing structure is arranged; a first baffle silencing plate is arranged at the position of the inner wall of the body between the air inlet silencing structure and the air outlet, and a second baffle silencing plate is arranged at the position of the inner wall of the body between the air outlet silencing structure and the air inlet;
the sound absorbing cotton is adhered to the inner wall of the body, the surface of the air inlet silencing structure, the surface of the air outlet silencing structure, the surface of the first baffle silencing plate and the surface of the second baffle silencing plate.
Further, the outside symmetry of body is equipped with the mount pad, is equipped with the connecting hole on the mount pad.
Further, a shock pad is arranged on the outer side of the mounting seat, and a through hole is formed in the shock pad corresponding to each connecting hole.
Further, the air inlet silencing structure comprises an air inlet baffle strip fixed at the position corresponding to the air inlet in the silencing cavity, an air inlet silencing groove is formed in the position, facing the center of the silencing cavity, of the baffle strip, one end of the first baffle silencing plate is fixed on the inner wall of the body, the other end of the first baffle silencing plate extends towards the air inlet silencing groove, and a first air passing gap is reserved between the first baffle silencing plate and the bottom of the air inlet silencing groove.
Further, the width of the first air passing gap is 1/3-2/3 of the diameter of the air inlet.
Further, the cross section of the air inlet silencing groove is of an omega-shaped structure.
Further, the air outlet silencing structure comprises an air outlet baffle strip fixed at the position corresponding to the air outlet in the silencing cavity, and an air outlet silencing groove is arranged at the position of the baffle strip towards the center of the silencing cavity; one end of the second baffle silencing plate is fixed on the inner wall of the body, the other end of the second baffle silencing plate extends towards the air outlet silencing groove, and an air passing gap is reserved between the second baffle silencing plate and the bottom of the air outlet silencing groove.
Further, the cross section of the air outlet silencing groove is of an omega-shaped structure.
Further, the width of the second air passing gap is 1/3-2/3 of the diameter of the air outlet.
Compared with the prior art, the invention has the following advantages:
the invention has reasonable structural design, designs the air inlet and outlet silencing structures in the limited space of the body, prolongs the path of the air flow to the greatest extent, and effectively increases the contact area of the air flow and the silencing cotton by arranging the baffle silencing plates, improves the silencing effect to the greatest extent, ensures that the noise in the using process of the fresh air system is controlled in a lower range, and has high comfort level.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
fig. 1 is a schematic diagram of the structure of the present invention.
Reference numerals illustrate:
1-a body; 2-a silencing cavity; 3-an air inlet; 4-an air outlet; 5-a first baffle muffler plate; 6-a second baffle muffler plate; 7-sound-absorbing cotton; 8-mounting seats; 9-a shock pad; 10-air inlet barrier strips; 11-an air inlet silencing groove; 12-a first windbreak gap; 13, an air outlet barrier strip; 14-an air outlet silencing groove; 15-a second windbreak gap; 16-arc angle structure.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The silencer of the fresh air system, as shown in figure 1, comprises a body 1, wherein a silencing cavity 2 is arranged in the body, an air inlet 3 and an air outlet 4 of the silencer are respectively arranged at two ends of the body, the axes of the air inlet and the air outlet are staggered, and a special silencing structure is designed; specific:
the inner wall of the body is positioned at the air inlet side and corresponds to one end of the air outlet, and is provided with an air inlet silencing structure; a first baffle silencing plate 5 is arranged at the position of the inner wall of the body between the air inlet silencing structure and the air outlet, and a second baffle silencing plate 6 is arranged at the position of the inner wall of the body between the air outlet silencing structure and the air inlet;
the sound absorbing cotton 7 is attached to the inner wall of the body, the surface of the air inlet silencing structure, the surface of the air outlet silencing structure, the surface of the first baffle silencing plate and the surface of the second baffle silencing plate.
The outside of the body is symmetrically provided with a mounting seat 8, and the mounting seat is provided with a connecting hole. In an alternative embodiment, in order to avoid noise generated by vibration of the body and also avoid vibration transmission between the body and the connected structural member, a shock pad 9 may be disposed on the outer side of the mounting seat, and a via hole is disposed on the shock pad corresponding to each of the connection holes.
The air inlet silencing structure comprises an air inlet baffle strip 10 fixed at the position corresponding to the air inlet in the silencing cavity, an air inlet silencing groove 11 is formed in the position, facing the center of the silencing cavity, of the baffle strip, one end of the first baffle silencing plate is fixed on the inner wall of the body, the other end of the first baffle silencing plate extends towards the air inlet silencing groove, and a first air passing gap 12 is reserved between the first baffle silencing plate and the bottom of the air inlet silencing groove. It should be noted that, the air inlet baffle strip only sets up the space that one side of amortization groove has the overair, and air inlet baffle strip back and body inner wall laminating do not have the air current to pass through between the two.
In fact, the air inlet silencing structure is an inner corner protector of the corresponding corner of one side of the air inlet, the length of the air path is prolonged, the designed groove also increases the line distance of the air flow passing through to the greatest extent, and the noise reduction silencing effect is improved.
The width of the first air passing gap is 1/3-2/3 of the diameter of the air inlet, and the total cross-sectional area of the first air passing gap is larger than the cross-sectional area of the air inlet. The first air passing gap is enough to ensure that air flow smoothly passes through, and no obstruction is generated. The cross section of the air inlet silencing groove is of an omega-shaped structure, so that the air flow passing path is prolonged to the greatest extent in a limited space, and the contact area of the air flow and silencing cotton is increased.
The air-out silencing structure comprises an air-out barrier strip 13 fixed at the position corresponding to an air outlet in the silencing cavity, and an air-out silencing groove 14 is arranged at the position of the barrier strip towards the center of the silencing cavity; one end of the second baffle silencing plate is fixed on the inner wall of the body, the other end of the second baffle silencing plate extends towards the air outlet silencing groove, and an air passing gap 15 is reserved between the second baffle silencing plate and the bottom of the air outlet silencing groove. Similarly, the principle of the air outlet silencing structure and the air inlet silencing structure acts approximately.
The design is the same as that of the air inlet silencing structure, and the cross section of the air outlet silencing groove is of an omega-shaped structure. The width of the second air passing gap is 1/3-2/3 of the diameter of the air outlet, and the total cross-sectional area of the second air passing gap is larger than the cross-sectional area of the air outlet.
In an alternative embodiment, the corners of the body muffler chamber are prevented from forming large wind resistance, and the corners of the body are generally designed into arc-shaped angle structures 16, so that smooth air flow passes through the body muffler chamber.
The invention has reasonable structural design, designs the air inlet and outlet silencing structures in the limited space of the body, prolongs the path of the air flow to the greatest extent, and effectively increases the contact area of the air flow and the silencing cotton by arranging the baffle silencing plates, improves the silencing effect to the greatest extent, ensures that the noise in the using process of the fresh air system is controlled in a lower range, and has high comfort level.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a silencing device of new trend system which characterized in that: the silencer comprises a body, wherein a silencing cavity is arranged in the body, and an air inlet and an air outlet are respectively arranged at two ends of the body;
an air inlet silencing structure is arranged at one end of the inner wall of the body, which is positioned at the air inlet side and corresponds to the air outlet; the inner wall of the body is positioned at the air outlet side and corresponds to one end of the air inlet, and an air outlet silencing structure is arranged; a first baffle silencing plate is arranged at the position of the inner wall of the body between the air inlet silencing structure and the air outlet, and a second baffle silencing plate is arranged at the position of the inner wall of the body between the air outlet silencing structure and the air inlet;
the air inlet silencing structure comprises an air inlet baffle strip fixed at a position corresponding to an air inlet in the silencing cavity, the baffle strip is provided with an air inlet silencing groove, one end of the first baffle silencing plate is fixed on the inner wall of the body, the other end of the first baffle silencing plate extends towards the air inlet silencing groove, and a first air passing gap is reserved between the first baffle silencing plate and the bottom of the air inlet silencing groove; the cross section of the air inlet silencing groove is of an omega-shaped structure;
the air outlet silencing structure comprises an air outlet baffle strip fixed at the position corresponding to an air outlet in the silencing cavity, and the baffle strip is provided with an air outlet silencing groove; one end of the second baffle silencing plate is fixed on the inner wall of the body, the other end of the second baffle silencing plate extends towards the air outlet silencing groove, and a second air passing gap is reserved between the second baffle silencing plate and the bottom of the air outlet silencing groove; the cross section of the air outlet silencing groove is of an omega-shaped structure;
the sound absorbing cotton is adhered to the inner wall of the body, the surface of the air inlet silencing structure, the surface of the air outlet silencing structure, the surface of the first baffle silencing plate and the surface of the second baffle silencing plate.
2. The silencer of a fresh air system of claim 1, wherein: the body is externally and symmetrically provided with mounting seats, and the mounting seats are provided with connecting holes.
3. The silencer of a fresh air system of claim 2, wherein: the mounting seat is characterized in that a shock pad is arranged on the outer side of the mounting seat, and through holes are formed in the shock pad corresponding to each connecting hole.
4. The silencer of a fresh air system of claim 1, wherein: the width of the first air passing gap is 1/3-2/3 of the diameter of the air inlet.
5. The silencer of a fresh air system of claim 1, wherein: the width of the second air passing gap is 1/3-2/3 of the diameter of the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406165.8A CN110940083B (en) | 2019-12-31 | 2019-12-31 | Silencing device of fresh air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406165.8A CN110940083B (en) | 2019-12-31 | 2019-12-31 | Silencing device of fresh air system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110940083A CN110940083A (en) | 2020-03-31 |
| CN110940083B true CN110940083B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406165.8A Active CN110940083B (en) | 2019-12-31 | 2019-12-31 | Silencing device of fresh air system |
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| Country | Link |
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| CN (1) | CN110940083B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520859B (en) * | 2020-05-13 | 2021-07-06 | 河北米微环保设备有限公司 | New trend system device for teaching area |
| CN112484289B (en) * | 2020-11-20 | 2021-11-30 | 珠海格力电器股份有限公司 | Noise reduction device, fresh air fan and noise reduction method |
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| GB8808696D0 (en) * | 1988-04-13 | 1988-05-18 | Tomac Mining Products Ltd | Silencer for gas flow apparatus |
| JP3013321U (en) * | 1994-12-30 | 1995-07-11 | 昭和電機株式会社 | Silencer for mounting the suction port of a blower |
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| KR20100008742U (en) * | 2009-02-25 | 2010-09-02 | 윤호식 | Fabricated duct silencer for attenuating a sound or noise transmitted through an air passage of a duct |
| KR20120111246A (en) * | 2011-03-31 | 2012-10-10 | 삼성중공업 주식회사 | Noise reduction exhaust duct for ship |
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| CN207598454U (en) * | 2017-11-29 | 2018-07-10 | 河北瑞鑫化工有限公司 | A kind of vacuum pump with noise reduction |
| KR20180086009A (en) * | 2017-01-20 | 2018-07-30 | 주식회사 씨앤월드 | Noise absorption module for silencer |
| CN109520114A (en) * | 2018-11-12 | 2019-03-26 | 吉林建筑大学 | A kind of silencing apparatus for Heating,Ventilating and Air Conditioning ventilating system |
| CN109882451A (en) * | 2019-03-12 | 2019-06-14 | 亿昇(天津)科技有限公司 | A kind of silencing means of magnetic suspension air blower emptying |
| CN211781879U (en) * | 2019-12-31 | 2020-10-27 | 天津丽茂源松节能技术有限公司 | Silencing device of new trend system |
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| US8459407B2 (en) * | 2008-10-01 | 2013-06-11 | General Electric Company | Sound attenuation systems and methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8808696D0 (en) * | 1988-04-13 | 1988-05-18 | Tomac Mining Products Ltd | Silencer for gas flow apparatus |
| JP3013321U (en) * | 1994-12-30 | 1995-07-11 | 昭和電機株式会社 | Silencer for mounting the suction port of a blower |
| KR20000002702U (en) * | 1998-07-09 | 2000-02-07 | 윤은중 | Splitter for duct silencer |
| JP2000248921A (en) * | 1999-02-26 | 2000-09-12 | Shintaro Yamada | Purifying silencer |
| KR20010025433A (en) * | 2000-12-27 | 2001-04-06 | 조방형 | Ducted noise damper |
| JP2006200882A (en) * | 2004-12-24 | 2006-08-03 | Yagikuma:Kk | Silencing ventilation member using diffraction buffering of sound wave |
| KR20080102740A (en) * | 2007-05-22 | 2008-11-26 | 차은진 | Silencer and air cleaner comprising it |
| FR2920346A1 (en) * | 2007-08-27 | 2009-03-06 | Peugeot Citroen Automobiles Sa | Ventilating system for commercial vehicle, has acoustical foam provided in conduit for partially covering internal wall of conduit, and deflector element directing air flow from inlet of conduit towards acoustical foam |
| KR20100008742U (en) * | 2009-02-25 | 2010-09-02 | 윤호식 | Fabricated duct silencer for attenuating a sound or noise transmitted through an air passage of a duct |
| KR20120111246A (en) * | 2011-03-31 | 2012-10-10 | 삼성중공업 주식회사 | Noise reduction exhaust duct for ship |
| KR20140142451A (en) * | 2013-06-04 | 2014-12-12 | 조철휘 | Building ventilation silencer |
| CN104422111A (en) * | 2013-09-11 | 2015-03-18 | 珠海格力电器股份有限公司 | Silencing structure of air conditioner and air conditioner |
| KR101481707B1 (en) * | 2014-04-17 | 2015-01-22 | 주식회사 성지공조기술 | Variable type sound absorption device |
| GB201513027D0 (en) * | 2015-07-23 | 2015-09-09 | Ford Global Tech Llc | An exhaust silencer |
| CN106245797A (en) * | 2015-09-09 | 2016-12-21 | 无锡亮慧环保机械有限公司 | Many dividing plates buffer-type noise abatement structure of machine room |
| CN106679135A (en) * | 2015-11-10 | 2017-05-17 | 重庆成吉消防安全技术有限公司 | Efficient noise elimination static pressure tank |
| CN106288110A (en) * | 2016-09-23 | 2017-01-04 | 湖南大学 | A kind of sound insulation wall aerarium |
| KR20180086009A (en) * | 2017-01-20 | 2018-07-30 | 주식회사 씨앤월드 | Noise absorption module for silencer |
| CN207598454U (en) * | 2017-11-29 | 2018-07-10 | 河北瑞鑫化工有限公司 | A kind of vacuum pump with noise reduction |
| CN109520114A (en) * | 2018-11-12 | 2019-03-26 | 吉林建筑大学 | A kind of silencing apparatus for Heating,Ventilating and Air Conditioning ventilating system |
| CN109882451A (en) * | 2019-03-12 | 2019-06-14 | 亿昇(天津)科技有限公司 | A kind of silencing means of magnetic suspension air blower emptying |
| CN211781879U (en) * | 2019-12-31 | 2020-10-27 | 天津丽茂源松节能技术有限公司 | Silencing device of new trend system |
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|---|---|
| CN110940083A (en) | 2020-03-31 |
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