CN209510136U

CN209510136U - A kind of ventilation noise reduction shutter

Info

Publication number: CN209510136U
Application number: CN201822041545.3U
Authority: CN
Inventors: 吕林晏
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-10-18
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses a kind of ventilation noise reduction shutters, it includes frame, frame inner wall installs abatvoix, bottom installation draining bottom plate, 3 groups of Sound absorption louver pieces are fixedly mounted in the inner cavity that abatvoix and draining bottom plate are formed and are combined into three-level shutter, wherein louvre series one, louvre series three and angle between louvre series two are equal and be 80 °~90 °, the angle of louvre series two and horizontal plane is 30 °~60 °, and is spaced 10~60mm in the horizontal direction between three groups of louvre blades；3 grades of sound barriers reflections of the utility model shutter integrated use are eliminated the noise, 3 grades of resistive sound-absorbings are eliminated the noise, 2 grades of expansion chambers reactive mufflings, are had excellent basic, normal, high frequency noise elimination noise reduction ability, be can satisfy ventilation, the noise reduction requirement of strong noise environment.

Description

A kind of ventilation noise reduction shutter

Technical field

The utility model relates to a kind of shutters, and in particular to a kind of ventilation noise reduction shutter.

Background technique

Noise is most commonly seen pollution modes in daily life, and the excessively high noise of intensity seriously affects the body and mind of people Health.

Traffic noise, business activity noise, man-made noise etc. are the production for influencing people, the Main Noise Sources of life.This A little noise sources are substantially at ground or subaerial position.

Noise reduction shutter structure is mainly used for needing while meeting ventilation and reduces the equipment outside of noise, in route of transmission Upper reduction noise.In the strong house of outdoor environment noise and office space, in order to avoid high-decibel noise to the work of personnel, The negative influence of life, it is also desirable to have both the noise reduction shutter of ventilation and decrease of noise functions.

CN 202451011U provides a kind of ventilating silencing window shade for improving structure, including frame body, the frame body Inner cavity is embedded with louvre blade and forms shutter, it is characterised in that the louvre blade is inverted V-shape made of silencing cotton compacting Body, the louvre blade passes through secondly a side end face inlay card is in the frame body.The document uses resistance noise reduction principle, using disappearing The porosity of sound cotton reduces the noise intensity by shutter.

CN 105239909A provides a kind of sound-deadening louver, including blade, and blade is by cover blade and noise elimination blade group At cover blade both sides are equipped with noise elimination blade, and cover blade is opaque material preparation, and noise elimination blade is transparent material system It is standby, there is micropore above noise elimination blade.Blade is made of cover blade and noise elimination blade, and cover blade both sides are equipped with noise elimination leaf Piece, noise elimination blade are equipped with hole；Blade of louver window design uses dissipative muffler principle, will pass through blade using microperforated panel Sound consumes.

Above scheme all has certain noise reduction capability, due to using single resistance noise reduction principle, although right Medium, high frequency noise has certain noise elimination effect, poor to low, mid-frequency noise noise elimination effect, ideal therefore, it is difficult to reach Noise reduction effect.

Utility model content

The purpose of this utility model is that in view of the drawbacks of the prior art and insufficient, provide that a kind of structure is simple, design is closed Reason, ventilation noise reduction shutter easy to use.

In order to achieve the above purposes, the technical solution adopted by the utility model is:, and it includes frame；The back of frame, which is equipped with, to be protected Warm sound insulationg board；The inner wall of frame is equipped with abatvoix；The bottom of frame is equipped with draining bottom plate；The square that abatvoix and draining bottom plate are formed Three-level shutter is fixedly installed in shape cavity；Three-level shutter includes three groups of louvre blades being obliquely installed, respectively For louvre series one, louvre series two and louvre series three；Louvre series one are parallel to each other with louvre series three；Louvre series two It is located between louvre series one and louvre series three, and the inclined direction of inclined direction and louvre series one and louvre series three On the contrary；First order expansion chambers are formed between louvre series one and louvre series two；Shape between louvre series two and louvre series three At second level expansion chambers；

Further, the angle between louvre series two and horizontal plane is 30-60 degree；

Further, the angle between louvre series one, louvre series three and louvre series two is 80-90 degree；

Further, louvre series one, louvre series two and louvre series three it is in the horizontal direction between be divided into 10~60mm；

Further, the vertical interval of the middle louvre blade of louvre series one, louvre series two and louvre series three is identical；Hundred Blinds leaf length is more than or equal to the vertical interval of louvre blade in 2 times of this groups in blade group one, the length of louvre blade in louvre series two Degree is more than or equal to the vertical interval of louvre blade in 2.5 times of this groups, and blinds leaf length is more than or equal to 1.2 times of this groups in louvre series three The vertical interval of middle louvre blade.

Further, it is tightly connected between thermal insulation sound baffle and frame by sealing joint strip.

After adopting the above structure, the utility model has the beneficial effect that a kind of ventilation noise reduction blinds described in the utility model Window has excellent basic, normal, high frequency noise elimination noise reduction ability, can satisfy ventilation, the noise reduction requirement of strong noise environment, and has The advantages that structure is simple, setting is reasonable, low manufacture cost.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the front view of the utility model；

Fig. 2 is the cross-sectional view in the direction A-A in Fig. 1；

Fig. 3 is the structural schematic diagram of three-level shutter；

Fig. 4 is the perspective view of the utility model.

Description of symbols:

1, frame；2, abatvoix；3, louvre series one；4, louvre series two；5, louvre series three；6, the first order is expanded Room；7, second level expansion chambers；8, bottom plate is drained；9, thermal insulation sound baffle；10, sealing joint strip.

Specific embodiment

With reference to the accompanying drawing, the utility model is further described.

Referring to shown in Fig. 1-4, present embodiment the technical solution adopted is that: it includes frame 1；The back of frame 1 Equipped with thermal insulation sound baffle 9；It is tightly connected between thermal insulation sound baffle 9 and frame 1 by sealing joint strip 10；The inner wall of frame 1 is equipped with Abatvoix 2；The bottom of frame 1 is equipped with draining bottom plate 8；It is fixedly installed in the rectangular enclosure that abatvoix 2 is formed with draining bottom plate 8 Three-level shutter；Three-level shutter includes three groups of louvre blades being obliquely installed, respectively louvre series 1, blinds Piece group 24 and louvre series 35；Louvre series 1 are parallel to each other with louvre series 35；Louvre series 24 are located at louvre series Between one 3 and louvre series 35, and inclined direction is opposite with the inclined direction of louvre series 1 and louvre series 35；Hundred Angle β between blade group 24 and horizontal plane is 30-60 degree；Louvre series 1, louvre series 35 and louvre series 24 it Between angle α be 80-90 degree；In the horizontal direction is divided into 10~60mm, blinds between louvre series 1, louvre series 24 First order expansion chambers 6 are formed between piece group 1 and louvre series 24；Louvre series 24, louvre series 35 are in the horizontal direction Between be divided into 10~60mm, between louvre series 24 and louvre series 35 formed second level expansion chambers 7；Louvre series 1, blinds Piece group 24 is identical with the vertical interval H of the middle louvre blade of louvre series 35；Wherein, blinds leaf length >=2 in louvre series 1 H, length >=2.5 H of louvre blade in louvre series 24, blinds leaf length >=1.2 H in louvre series 35.

In present embodiment, abatvoix 2 and louvre blade are all made of waterproof, corrosion resistant sound-absorbing material, such as foam Aluminium sheet.

One 3 plate face of louvre series plays the role of sound barrier towards outdoor main noise source direction, for through noise, avoids sound Strong maximum through noise is directly entered inside shutter body；Louvre series 1 form first order air communication channel, have resistance Property sound-absorbing noise elimination function；Interval between louvre series 1 and louvre series 24 forms first order expansion chambers 6, has resistance and disappears Sound function；Angle between louvre series 24 and louvre series 1 is 80 °~90 °, and louvre series 24 are equivalent to second level sound Most of incident-noise can be reflected back first order silencing channel by barrier；Louvre series 24 form second level air stream all Road has resistive sound-absorbing noise elimination function；Interval between louvre series 24 and louvre series 35 forms second level expansion chambers 7, Has reactive muffling function；Angle between louvre series 35 and louvre series 24 is 80 °~90 °, and louvre series 35 are suitable In third level sound barrier, most of incident-noise can be reflected back second level silencing channel；Louvre series 35 form the third level Air communication channel has resistive sound-absorbing noise elimination function.Sound barrier has good high frequency acoustic attenuation performance, and resistive sound-absorbing has good Good medium, high frequency acoustic attenuation performance, expansion chambers reactive muffling have good low, intermediate frequency acoustic attenuation performance.In present embodiment 3 grades of sound barriers reflections of shutter integrated use eliminate the noise, 3 grades of resistive sound-absorbings are eliminated the noise, 2 grades of expansion chambers reactive mufflings, have excellent Different basic, normal, high frequency noise elimination noise reduction ability can satisfy ventilation, the noise reduction requirement of strong noise environment.

The above is only to illustrate the technical solution of the utility model, rather than limits those of ordinary skill in the art couple The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model Spirit and scope should all cover in the scope of the claims of the utility model.

Claims

1. a kind of ventilation noise reduction shutter, it is characterised in that it includes frame；The back of frame is equipped with thermal insulation sound baffle；Frame Inner wall is equipped with abatvoix；The bottom of frame is equipped with draining bottom plate；It is fixed in the rectangular enclosure that abatvoix and draining bottom plate are formed to pacify Equipped with three-level shutter；Three-level shutter includes three groups of louvre blades being obliquely installed, respectively louvre series one, hundred Blade group two and louvre series three；Louvre series one are parallel to each other with louvre series three；Louvre series two are located at louvre series one Between louvre series three, and inclined direction is opposite with the inclined direction of louvre series one and louvre series three；Louvre series First order expansion chambers are formed between one and louvre series two；Second level expansion is formed between louvre series two and louvre series three Room.

2. a kind of ventilation noise reduction shutter according to claim 1, it is characterised in that between louvre series two and horizontal plane Angle be 30-60 degree.

3. a kind of ventilation noise reduction shutter according to claim 1 or 2, it is characterised in that louvre series one, louvre series Angle between three and louvre series two is 80-90 degree.

4. a kind of ventilation noise reduction shutter according to claim 1, it is characterised in that louvre series one, two and of louvre series Louvre series three in the horizontal direction are divided into 10~60mm.

5. a kind of ventilation noise reduction shutter according to claim 1, it is characterised in that louvre series one, two and of louvre series The vertical interval of the middle louvre blade of louvre series three is identical；Blinds leaf length is more than or equal to hundred in 2 times of this groups in louvre series one The vertical interval of blade, the length of louvre blade is more than or equal to the vertical interval of louvre blade in 2.5 times of this groups in louvre series two, and hundred Blinds leaf length is more than or equal to the vertical interval of louvre blade in 1.2 times of this groups in blade group three.